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gecko-dev/layout/style/nsRuleNode.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Original Author: David W. Hyatt (hyatt@netscape.com)
* Daniel Glazman <glazman@netscape.com>
* Roger B. Sidje <rbs@maths.uq.edu.au>
*
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nscore.h"
#include "nsIServiceManager.h"
#include "nsRuleNode.h"
#include "nsIDeviceContext.h"
#include "nsILookAndFeel.h"
#include "nsIPresShell.h"
#include "nsIFontMetrics.h"
#include "nsIDocShellTreeItem.h"
#include "nsStyleUtil.h"
#include "nsCSSAtoms.h"
#include "nsThemeConstants.h"
#include "nsITheme.h"
#include "pldhash.h"
/*
* For storage of an |nsRuleNode|'s children in a linked list.
*/
struct nsRuleList {
nsRuleNode* mRuleNode;
nsRuleList* mNext;
public:
nsRuleList(nsRuleNode* aNode, nsRuleList* aNext= nsnull) {
MOZ_COUNT_CTOR(nsRuleList);
mRuleNode = aNode;
mNext = aNext;
}
~nsRuleList() {
MOZ_COUNT_DTOR(nsRuleList);
mRuleNode->Destroy();
if (mNext)
mNext->Destroy(mNext->mRuleNode->mPresContext);
}
void* operator new(size_t sz, nsIPresContext* aContext) CPP_THROW_NEW {
void* result = nsnull;
aContext->AllocateFromShell(sz, &result);
return result;
};
void operator delete(void* aPtr) {} // Does nothing. The arena will free us up when the rule tree
// dies.
void Destroy(nsIPresContext* aContext) {
this->~nsRuleList();
aContext->FreeToShell(sizeof(nsRuleList), this);
}
// Destroy this node, but not its rule node or the rest of the list.
nsRuleList* DestroySelf(nsIPresContext* aContext) {
nsRuleList *next = mNext;
MOZ_COUNT_DTOR(nsRuleList); // hack
aContext->FreeToShell(sizeof(nsRuleList), this);
return next;
}
};
/*
* For storage of an |nsRuleNode|'s children in a PLDHashTable.
*/
struct ChildrenHashEntry : public PLDHashEntryHdr {
// key (the rule) is |mRuleNode->Rule()|
nsRuleNode *mRuleNode;
};
PR_STATIC_CALLBACK(const void *)
ChildrenHashGetKey(PLDHashTable *table, PLDHashEntryHdr *hdr)
{
ChildrenHashEntry *entry = NS_STATIC_CAST(ChildrenHashEntry*, hdr);
return entry->mRuleNode->Rule();
}
PR_STATIC_CALLBACK(PRBool)
ChildrenHashMatchEntry(PLDHashTable *table, const PLDHashEntryHdr *hdr,
const void *key)
{
const ChildrenHashEntry *entry =
NS_STATIC_CAST(const ChildrenHashEntry*, hdr);
return entry->mRuleNode->Rule() == key;
}
static PLDHashTableOps ChildrenHashOps = {
// It's probably better to allocate the table itself using malloc and
// free rather than the pres shell's arena because the table doesn't
// grow very often and the pres shell's arena doesn't recycle very
// large size allocations.
PL_DHashAllocTable,
PL_DHashFreeTable,
ChildrenHashGetKey,
PL_DHashVoidPtrKeyStub,
ChildrenHashMatchEntry,
PL_DHashMoveEntryStub,
PL_DHashClearEntryStub,
PL_DHashFinalizeStub,
NULL
};
// EnsureBlockDisplay:
// - if the display value (argument) is not a block-type
// then we set it to a valid block display value
// - For enforcing the floated/positioned element CSS2 rules
static void EnsureBlockDisplay(PRUint8& display)
{
// see if the display value is already a block
switch (display) {
case NS_STYLE_DISPLAY_NONE :
// never change display:none *ever*
break;
case NS_STYLE_DISPLAY_TABLE :
case NS_STYLE_DISPLAY_BLOCK :
// do not muck with these at all - already blocks
break;
case NS_STYLE_DISPLAY_LIST_ITEM :
// do not change list items to blocks - retain the bullet/numbering
break;
case NS_STYLE_DISPLAY_TABLE_ROW_GROUP :
case NS_STYLE_DISPLAY_TABLE_COLUMN :
case NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP :
case NS_STYLE_DISPLAY_TABLE_HEADER_GROUP :
case NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP :
case NS_STYLE_DISPLAY_TABLE_ROW :
case NS_STYLE_DISPLAY_TABLE_CELL :
case NS_STYLE_DISPLAY_TABLE_CAPTION :
// special cases: don't do anything since these cannot really be floated anyway
break;
case NS_STYLE_DISPLAY_INLINE_TABLE :
// make inline tables into tables
display = NS_STYLE_DISPLAY_TABLE;
break;
default :
// make it a block
display = NS_STYLE_DISPLAY_BLOCK;
}
}
nsString& Unquote(nsString& aString)
{
PRUnichar start = aString.First();
PRUnichar end = aString.Last();
if ((start == end) &&
((start == PRUnichar('\"')) ||
(start == PRUnichar('\'')))) {
PRInt32 length = aString.Length();
aString.Truncate(length - 1);
aString.Cut(0, 1);
}
return aString;
}
nscoord CalcLength(const nsCSSValue& aValue,
const nsFont* aFont,
nsIStyleContext* aStyleContext,
nsIPresContext* aPresContext,
PRBool& aInherited)
{
NS_ASSERTION(aValue.IsLengthUnit(), "not a length unit");
if (aValue.IsFixedLengthUnit()) {
return aValue.GetLengthTwips();
}
nsCSSUnit unit = aValue.GetUnit();
switch (unit) {
case eCSSUnit_EM:
case eCSSUnit_Char: {
aInherited = PR_TRUE;
const nsFont* font = aStyleContext ? &(((nsStyleFont*)aStyleContext->GetStyleData(eStyleStruct_Font))->mFont) : aFont;
return NSToCoordRound(aValue.GetFloatValue() * (float)font->size);
// XXX scale against font metrics height instead?
}
case eCSSUnit_EN: {
aInherited = PR_TRUE;
const nsFont* font = aStyleContext ? &(((nsStyleFont*)aStyleContext->GetStyleData(eStyleStruct_Font))->mFont) : aFont;
return NSToCoordRound((aValue.GetFloatValue() * (float)font->size) / 2.0f);
}
case eCSSUnit_XHeight: {
aInherited = PR_TRUE;
const nsFont* font = aStyleContext ? &(((nsStyleFont*)aStyleContext->GetStyleData(eStyleStruct_Font))->mFont) : aFont;
nsCOMPtr<nsIFontMetrics> fm;
aPresContext->GetMetricsFor(*font, getter_AddRefs(fm));
nscoord xHeight;
fm->GetXHeight(xHeight);
return NSToCoordRound(aValue.GetFloatValue() * (float)xHeight);
}
case eCSSUnit_CapHeight: {
NS_NOTYETIMPLEMENTED("cap height unit");
aInherited = PR_TRUE;
const nsFont* font = aStyleContext ? &(((nsStyleFont*)aStyleContext->GetStyleData(eStyleStruct_Font))->mFont) : aFont;
nscoord capHeight = ((font->size / 3) * 2); // XXX HACK!
return NSToCoordRound(aValue.GetFloatValue() * (float)capHeight);
}
case eCSSUnit_Pixel:
float p2t;
aPresContext->GetScaledPixelsToTwips(&p2t);
return NSFloatPixelsToTwips(aValue.GetFloatValue(), p2t);
default:
NS_NOTREACHED("unexpected unit");
break;
}
return 0;
}
#define SETCOORD_NORMAL 0x01 // N
#define SETCOORD_AUTO 0x02 // A
#define SETCOORD_INHERIT 0x04 // H
#define SETCOORD_PERCENT 0x08 // P
#define SETCOORD_FACTOR 0x10 // F
#define SETCOORD_LENGTH 0x20 // L
#define SETCOORD_INTEGER 0x40 // I
#define SETCOORD_ENUMERATED 0x80 // E
#define SETCOORD_LP (SETCOORD_LENGTH | SETCOORD_PERCENT)
#define SETCOORD_LH (SETCOORD_LENGTH | SETCOORD_INHERIT)
#define SETCOORD_AH (SETCOORD_AUTO | SETCOORD_INHERIT)
#define SETCOORD_LPH (SETCOORD_LP | SETCOORD_INHERIT)
#define SETCOORD_LPAH (SETCOORD_LP | SETCOORD_AH)
#define SETCOORD_LPEH (SETCOORD_LP | SETCOORD_ENUMERATED | SETCOORD_INHERIT)
#define SETCOORD_LE (SETCOORD_LENGTH | SETCOORD_ENUMERATED)
#define SETCOORD_LEH (SETCOORD_LE | SETCOORD_INHERIT)
#define SETCOORD_IA (SETCOORD_INTEGER | SETCOORD_AUTO)
#define SETCOORD_LAE (SETCOORD_LENGTH | SETCOORD_AUTO | SETCOORD_ENUMERATED)
static PRBool SetCoord(const nsCSSValue& aValue, nsStyleCoord& aCoord,
const nsStyleCoord& aParentCoord,
PRInt32 aMask, nsIStyleContext* aStyleContext,
nsIPresContext* aPresContext, PRBool& aInherited)
{
PRBool result = PR_TRUE;
if (aValue.GetUnit() == eCSSUnit_Null) {
result = PR_FALSE;
}
else if (((aMask & SETCOORD_LENGTH) != 0) &&
(aValue.GetUnit() == eCSSUnit_Char)) {
aCoord.SetIntValue(NSToIntFloor(aValue.GetFloatValue()), eStyleUnit_Chars);
}
else if (((aMask & SETCOORD_LENGTH) != 0) &&
aValue.IsLengthUnit()) {
aCoord.SetCoordValue(CalcLength(aValue, nsnull, aStyleContext, aPresContext, aInherited));
}
else if (((aMask & SETCOORD_PERCENT) != 0) &&
(aValue.GetUnit() == eCSSUnit_Percent)) {
aCoord.SetPercentValue(aValue.GetPercentValue());
}
else if (((aMask & SETCOORD_INTEGER) != 0) &&
(aValue.GetUnit() == eCSSUnit_Integer)) {
aCoord.SetIntValue(aValue.GetIntValue(), eStyleUnit_Integer);
}
else if (((aMask & SETCOORD_ENUMERATED) != 0) &&
(aValue.GetUnit() == eCSSUnit_Enumerated)) {
aCoord.SetIntValue(aValue.GetIntValue(), eStyleUnit_Enumerated);
}
else if (((aMask & SETCOORD_AUTO) != 0) &&
(aValue.GetUnit() == eCSSUnit_Auto)) {
aCoord.SetAutoValue();
}
else if (((aMask & SETCOORD_INHERIT) != 0) &&
(aValue.GetUnit() == eCSSUnit_Inherit)) {
nsStyleUnit unit = aParentCoord.GetUnit();
if ((eStyleUnit_Null == unit) || // parent has explicit computed value
(eStyleUnit_Factor == unit) ||
(eStyleUnit_Coord == unit) ||
(eStyleUnit_Integer == unit) ||
(eStyleUnit_Enumerated == unit) ||
(eStyleUnit_Normal == unit) ||
(eStyleUnit_Chars == unit)) {
aCoord = aParentCoord; // just inherit value from parent
aInherited = PR_TRUE;
}
else {
aCoord.SetInheritValue(); // needs to be computed by client
// Since this works just like being
// specified and not inherited, that's
// how it's treated.
}
}
else if (((aMask & SETCOORD_NORMAL) != 0) &&
(aValue.GetUnit() == eCSSUnit_Normal)) {
aCoord.SetNormalValue();
}
else if (((aMask & SETCOORD_FACTOR) != 0) &&
(aValue.GetUnit() == eCSSUnit_Number)) {
aCoord.SetFactorValue(aValue.GetFloatValue());
}
else {
result = PR_FALSE; // didn't set anything
}
return result;
}
static PRBool SetColor(const nsCSSValue& aValue, const nscolor aParentColor,
nsIPresContext* aPresContext, nscolor& aResult, PRBool& aInherited)
{
PRBool result = PR_FALSE;
nsCSSUnit unit = aValue.GetUnit();
if (eCSSUnit_Color == unit) {
aResult = aValue.GetColorValue();
result = PR_TRUE;
}
else if (eCSSUnit_String == unit) {
nsAutoString value;
aValue.GetStringValue(value);
nscolor rgba;
if (NS_ColorNameToRGB(value, &rgba)) {
aResult = rgba;
result = PR_TRUE;
}
}
else if (eCSSUnit_Integer == unit) {
PRInt32 intValue = aValue.GetIntValue();
if (0 <= intValue) {
nsILookAndFeel* look = nsnull;
if (NS_SUCCEEDED(aPresContext->GetLookAndFeel(&look)) && look) {
nsILookAndFeel::nsColorID colorID = (nsILookAndFeel::nsColorID) intValue;
if (NS_SUCCEEDED(look->GetColor(colorID, aResult))) {
result = PR_TRUE;
}
NS_RELEASE(look);
}
}
else {
switch (intValue) {
case NS_COLOR_MOZ_HYPERLINKTEXT:
if (NS_SUCCEEDED(aPresContext->GetDefaultLinkColor(&aResult))) {
result = PR_TRUE;
}
break;
case NS_COLOR_MOZ_VISITEDHYPERLINKTEXT:
if (NS_SUCCEEDED(aPresContext->GetDefaultVisitedLinkColor(&aResult))) {
result = PR_TRUE;
}
break;
default:
NS_NOTREACHED("Should never have an unknown negative colorID.");
break;
}
}
}
else if (eCSSUnit_Inherit == unit) {
aResult = aParentColor;
result = PR_TRUE;
aInherited = PR_TRUE;
}
return result;
}
// Overloaded new operator. Initializes the memory to 0 and relies on an arena
// (which comes from the presShell) to perform the allocation.
void*
nsRuleNode::operator new(size_t sz, nsIPresContext* aPresContext) CPP_THROW_NEW
{
// Check the recycle list first.
void* result = nsnull;
aPresContext->AllocateFromShell(sz, &result);
return result;
}
// Overridden to prevent the global delete from being called, since the memory
// came out of an nsIArena instead of the global delete operator's heap.
void
nsRuleNode::Destroy()
{
// Destroy ourselves.
this->~nsRuleNode();
// Don't let the memory be freed, since it will be recycled
// instead. Don't call the global operator delete.
mPresContext->FreeToShell(sizeof(nsRuleNode), this);
}
void nsRuleNode::CreateRootNode(nsIPresContext* aPresContext, nsRuleNode** aResult)
{
*aResult = new (aPresContext) nsRuleNode(aPresContext);
}
nsILanguageAtomService* nsRuleNode::gLangService = nsnull;
nsRuleNode::nsRuleNode(nsIPresContext* aContext, nsIStyleRule* aRule, nsRuleNode* aParent)
: mPresContext(aContext),
mParent(aParent),
mRule(aRule),
mChildrenTaggedPtr(nsnull),
mDependentBits(0),
mNoneBits(0)
{
MOZ_COUNT_CTOR(nsRuleNode);
}
PR_STATIC_CALLBACK(PLDHashOperator)
DeleteRuleNodeChildren(PLDHashTable *table, PLDHashEntryHdr *hdr,
PRUint32 number, void *arg)
{
ChildrenHashEntry *entry = NS_STATIC_CAST(ChildrenHashEntry*, hdr);
entry->mRuleNode->Destroy();
return PL_DHASH_NEXT;
}
nsRuleNode::~nsRuleNode()
{
MOZ_COUNT_DTOR(nsRuleNode);
if (mStyleData.mResetData || mStyleData.mInheritedData)
mStyleData.Destroy(0, mPresContext);
if (ChildrenAreHashed()) {
PLDHashTable *children = ChildrenHash();
PL_DHashTableEnumerate(children, DeleteRuleNodeChildren, nsnull);
PL_DHashTableDestroy(children);
} else if (HaveChildren())
ChildrenList()->Destroy(mPresContext);
}
nsresult
nsRuleNode::GetBits(PRInt32 aType, PRUint32* aResult)
{
switch (aType) {
case eNoneBits : *aResult = mNoneBits; break;
case eDependentBits : *aResult = mDependentBits; break;
default:
NS_ERROR("invalid arg");
return NS_ERROR_INVALID_ARG;
}
return NS_OK;
}
nsresult
nsRuleNode::Transition(nsIStyleRule* aRule, PRBool aIsInlineStyle, nsRuleNode** aResult)
{
nsRuleNode* next = nsnull;
if (HaveChildren() && !ChildrenAreHashed()) {
PRInt32 numKids = 0;
nsRuleList* curr = ChildrenList();
while (curr && curr->mRuleNode->mRule != aRule) {
curr = curr->mNext;
++numKids;
}
if (curr)
next = curr->mRuleNode;
else if (numKids >= kMaxChildrenInList)
ConvertChildrenToHash();
}
PRBool createdNode = PR_FALSE;
if (ChildrenAreHashed()) {
ChildrenHashEntry *entry = NS_STATIC_CAST(ChildrenHashEntry*,
PL_DHashTableOperate(ChildrenHash(), aRule, PL_DHASH_ADD));
if (entry->mRuleNode)
next = entry->mRuleNode;
else {
next = entry->mRuleNode =
new (mPresContext) nsRuleNode(mPresContext, aRule, this);
if (!next) {
PL_DHashTableRawRemove(ChildrenHash(), entry);
*aResult = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
createdNode = PR_TRUE;
}
} else if (!next) {
// Create the new entry in our list.
next = new (mPresContext) nsRuleNode(mPresContext, aRule, this);
if (!next) {
*aResult = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
SetChildrenList(new (mPresContext) nsRuleList(next, ChildrenList()));
createdNode = PR_TRUE;
}
if (aIsInlineStyle && createdNode) {
// We just made a new rule node for an inline style rule (e.g., for
// the style attribute on an HTML, SVG, or XUL element). In order to
// fix bug 99344, we have to maintain a mapping from inline style rules
// to all the rule nodes in a rule tree that correspond to the inline
// style rule.
// Obtain our style set and then add this rule node to our mapping.
nsCOMPtr<nsIPresShell> shell;
mPresContext->GetShell(getter_AddRefs(shell));
nsCOMPtr<nsIStyleSet> styleSet;
shell->GetStyleSet(getter_AddRefs(styleSet));
styleSet->AddRuleNodeMapping(next);
}
*aResult = next;
return NS_OK;
}
void
nsRuleNode::ConvertChildrenToHash()
{
NS_ASSERTION(!ChildrenAreHashed() && HaveChildren(),
"must have a non-empty list of children");
PLDHashTable *hash = PL_NewDHashTable(&ChildrenHashOps, nsnull,
sizeof(ChildrenHashEntry),
kMaxChildrenInList * 4);
if (!hash)
return;
for (nsRuleList* curr = ChildrenList(); curr;
curr = curr->DestroySelf(mPresContext)) {
// This will never fail because of the initial size we gave the table.
ChildrenHashEntry *entry = NS_STATIC_CAST(ChildrenHashEntry*,
PL_DHashTableOperate(hash, curr->mRuleNode->mRule, PL_DHASH_ADD));
NS_ASSERTION(!entry->mRuleNode, "duplicate entries in list");
entry->mRuleNode = curr->mRuleNode;
}
SetChildrenHash(hash);
}
nsresult
nsRuleNode::PathContainsRule(nsIStyleRule* aRule, PRBool* aMatched)
{
*aMatched = PR_FALSE;
nsRuleNode* ruleDest = this;
while (ruleDest) {
if (ruleDest->mRule == aRule) {
*aMatched = PR_TRUE;
break;
}
ruleDest = ruleDest->mParent;
}
return NS_OK;
}
nsresult
nsRuleNode::ClearCachedData(nsIStyleRule* aRule)
{
nsRuleNode* ruleDest = this;
while (ruleDest) {
if (ruleDest->mRule == aRule)
break;
ruleDest = ruleDest->mParent;
}
if (ruleDest) {
// The rule was contained along our branch. We need to blow away
// all cached data along this path. Note that, because of the definition
// of inline style, all nodes along this path must have exactly one child. This
// is not a bushy subtree, and so we know that by clearing this path, we've
// invalidated everything that we need to.
// XXXldb What about !important :hover rules, and such?
nsRuleNode* curr = this;
while (curr) {
curr->mNoneBits &= ~NS_STYLE_INHERIT_MASK;
curr->mDependentBits &= ~NS_STYLE_INHERIT_MASK;
if (curr->mStyleData.mResetData || curr->mStyleData.mInheritedData)
curr->mStyleData.Destroy(0, mPresContext);
if (curr == ruleDest)
break;
curr = curr->mParent;
}
}
return NS_OK;
}
PR_STATIC_CALLBACK(PLDHashOperator)
ClearCachedDataInSubtreeHelper(PLDHashTable *table, PLDHashEntryHdr *hdr,
PRUint32 number, void *arg)
{
ChildrenHashEntry *entry = NS_STATIC_CAST(ChildrenHashEntry*, hdr);
nsIStyleRule* rule = NS_STATIC_CAST(nsIStyleRule*, arg);
entry->mRuleNode->ClearCachedDataInSubtree(rule);
return PL_DHASH_NEXT;
}
nsresult
nsRuleNode::ClearCachedDataInSubtree(nsIStyleRule* aRule)
{
if (aRule == nsnull || mRule == aRule) {
// We have a match. Blow away all data stored at this node.
if (mStyleData.mResetData || mStyleData.mInheritedData)
mStyleData.Destroy(0, mPresContext);
mNoneBits &= ~NS_STYLE_INHERIT_MASK;
mDependentBits &= ~NS_STYLE_INHERIT_MASK;
aRule = nsnull; // Cause everything to be blown away in the descendants.
}
if (ChildrenAreHashed())
PL_DHashTableEnumerate(ChildrenHash(),
ClearCachedDataInSubtreeHelper, aRule);
else
for (nsRuleList* curr = ChildrenList(); curr; curr = curr->mNext)
curr->mRuleNode->ClearCachedDataInSubtree(aRule);
return NS_OK;
}
nsresult
nsRuleNode::GetPresContext(nsIPresContext** aResult)
{
*aResult = mPresContext;
NS_IF_ADDREF(*aResult);
return NS_OK;
}
inline void
nsRuleNode::PropagateNoneBit(PRUint32 aBit, nsRuleNode* aHighestNode)
{
nsRuleNode* curr = this;
for (;;) {
NS_ASSERTION(!(curr->mNoneBits & aBit), "propagating too far");
curr->mNoneBits |= aBit;
if (curr == aHighestNode)
break;
curr = curr->mParent;
}
}
inline void
nsRuleNode::PropagateDependentBit(PRUint32 aBit, nsRuleNode* aHighestNode)
{
if (mDependentBits & aBit)
return; // Already set.
nsRuleNode* curr = this;
while (curr != aHighestNode) {
if (curr->mDependentBits & aBit) {
#ifdef DEBUG
while (curr != aHighestNode) {
NS_ASSERTION(curr->mDependentBits & aBit, "bit not set");
curr = curr->mParent;
}
#endif
break;
}
curr->mDependentBits |= aBit;
curr = curr->mParent;
}
}
/*
* The following "Check" functions are used for determining what type of
* sharing can be used for the data on this rule node. MORE HERE...
*/
/* the information for a property (or in some cases, a rect group of
properties) */
// for PropertyCheckData::type
// XXX Would bits be more efficient?
#define CHECKDATA_VALUE 0
#define CHECKDATA_RECT 1
#define CHECKDATA_VALUELIST 2
#define CHECKDATA_COUNTERDATA 3
#define CHECKDATA_QUOTES 4
#define CHECKDATA_SHADOW 5
#define CHECKDATA_VALUELIST_ARRAY 6
struct PropertyCheckData {
size_t offset;
PRUint16 type;
PRPackedBool mayHaveExplicitInherit;
};
#define CHECKDATA_PROP(_datastruct, _member, _type, _iscoord) \
{ offsetof(_datastruct, _member), _type, _iscoord }
/* the information for all the properties in a style struct */
typedef nsRuleNode::RuleDetail
(* PR_CALLBACK CheckCallbackFn)(const nsCSSStruct& aData);
struct StructCheckData {
const PropertyCheckData* props;
PRInt32 nprops;
CheckCallbackFn callback;
};
static void
ExamineRectProperties(const nsCSSRect* aRect,
PRUint32& aSpecifiedCount, PRUint32& aInheritedCount)
{
if (!aRect)
return;
if (eCSSUnit_Null != aRect->mLeft.GetUnit()) {
aSpecifiedCount++;
if (eCSSUnit_Inherit == aRect->mLeft.GetUnit())
aInheritedCount++;
}
if (eCSSUnit_Null != aRect->mTop.GetUnit()) {
aSpecifiedCount++;
if (eCSSUnit_Inherit == aRect->mTop.GetUnit())
aInheritedCount++;
}
if (eCSSUnit_Null != aRect->mRight.GetUnit()) {
aSpecifiedCount++;
if (eCSSUnit_Inherit == aRect->mRight.GetUnit())
aInheritedCount++;
}
if (eCSSUnit_Null != aRect->mBottom.GetUnit()) {
aSpecifiedCount++;
if (eCSSUnit_Inherit == aRect->mBottom.GetUnit())
aInheritedCount++;
}
}
static void
ExamineRectCoordProperties(const nsCSSRect* aRect,
PRUint32& aSpecifiedCount,
PRUint32& aInheritedCount,
PRBool& aCanHaveExplicitInherit)
{
if (!aRect)
return;
if (eCSSUnit_Null != aRect->mLeft.GetUnit()) {
aSpecifiedCount++;
if (eCSSUnit_Inherit == aRect->mLeft.GetUnit()) {
aInheritedCount++;
aCanHaveExplicitInherit = PR_TRUE;
}
}
if (eCSSUnit_Null != aRect->mTop.GetUnit()) {
aSpecifiedCount++;
if (eCSSUnit_Inherit == aRect->mTop.GetUnit()) {
aInheritedCount++;
aCanHaveExplicitInherit = PR_TRUE;
}
}
if (eCSSUnit_Null != aRect->mRight.GetUnit()) {
aSpecifiedCount++;
if (eCSSUnit_Inherit == aRect->mRight.GetUnit()) {
aInheritedCount++;
aCanHaveExplicitInherit = PR_TRUE;
}
}
if (eCSSUnit_Null != aRect->mBottom.GetUnit()) {
aSpecifiedCount++;
if (eCSSUnit_Inherit == aRect->mBottom.GetUnit()) {
aInheritedCount++;
aCanHaveExplicitInherit = PR_TRUE;
}
}
}
PR_STATIC_CALLBACK(nsRuleNode::RuleDetail)
CheckFontCallback(const nsCSSStruct& aData)
{
const nsCSSFont& fontData = NS_STATIC_CAST(const nsCSSFont&, aData);
if (eCSSUnit_Enumerated == fontData.mFamily.GetUnit()) {
// A special case. We treat this as a fully specified font,
// since no other font props are legal with a system font.
PRInt32 family = fontData.mFamily.GetIntValue();
if ((family == NS_STYLE_FONT_CAPTION) ||
(family == NS_STYLE_FONT_ICON) ||
(family == NS_STYLE_FONT_MENU) ||
(family == NS_STYLE_FONT_MESSAGE_BOX) ||
(family == NS_STYLE_FONT_SMALL_CAPTION) ||
(family == NS_STYLE_FONT_STATUS_BAR) ||
(family == NS_STYLE_FONT_WINDOW) ||
(family == NS_STYLE_FONT_DOCUMENT) ||
(family == NS_STYLE_FONT_WORKSPACE) ||
(family == NS_STYLE_FONT_DESKTOP) ||
(family == NS_STYLE_FONT_INFO) ||
(family == NS_STYLE_FONT_DIALOG) ||
(family == NS_STYLE_FONT_BUTTON) ||
(family == NS_STYLE_FONT_PULL_DOWN_MENU) ||
(family == NS_STYLE_FONT_LIST) ||
(family == NS_STYLE_FONT_FIELD))
// Mixed rather than Reset in case another sub-property has
// an explicit 'inherit'. XXXperf Could check them.
return nsRuleNode::eRuleFullMixed;
}
return nsRuleNode::eRuleUnknown;
}
static const PropertyCheckData FontCheckProperties[] = {
CHECKDATA_PROP(nsCSSFont, mFamily, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSFont, mStyle, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSFont, mVariant, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSFont, mWeight, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSFont, mSize, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSFont, mSizeAdjust, CHECKDATA_VALUE, PR_FALSE)
};
static const PropertyCheckData DisplayCheckProperties[] = {
CHECKDATA_PROP(nsCSSDisplay, mAppearance, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSDisplay, mClip, CHECKDATA_RECT, PR_FALSE),
CHECKDATA_PROP(nsCSSDisplay, mDisplay, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSDisplay, mBinding, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSDisplay, mPosition, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSDisplay, mFloat, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSDisplay, mClear, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSDisplay, mOverflow, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSDisplay, mBreakBefore, CHECKDATA_VALUE, PR_FALSE), // temp fix for bug 2400
CHECKDATA_PROP(nsCSSDisplay, mBreakAfter, CHECKDATA_VALUE, PR_FALSE) // temp fix for bug 2400
};
static const PropertyCheckData VisibilityCheckProperties[] = {
CHECKDATA_PROP(nsCSSDisplay, mVisibility, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSDisplay, mDirection, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSDisplay, mLang, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSDisplay, mOpacity, CHECKDATA_VALUE, PR_FALSE)
};
static const PropertyCheckData MarginCheckProperties[] = {
CHECKDATA_PROP(nsCSSMargin, mMargin, CHECKDATA_RECT, PR_TRUE)
};
static const PropertyCheckData BorderCheckProperties[] = {
CHECKDATA_PROP(nsCSSMargin, mBorderWidth, CHECKDATA_RECT, PR_FALSE),
CHECKDATA_PROP(nsCSSMargin, mBorderStyle, CHECKDATA_RECT, PR_FALSE),
CHECKDATA_PROP(nsCSSMargin, mBorderColor, CHECKDATA_RECT, PR_FALSE),
CHECKDATA_PROP(nsCSSMargin, mBorderRadius, CHECKDATA_RECT, PR_TRUE),
CHECKDATA_PROP(nsCSSMargin, mFloatEdge, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSMargin, mBorderColors, CHECKDATA_VALUELIST_ARRAY, PR_FALSE)
};
static const PropertyCheckData PaddingCheckProperties[] = {
CHECKDATA_PROP(nsCSSMargin, mPadding, CHECKDATA_RECT, PR_TRUE)
};
static const PropertyCheckData OutlineCheckProperties[] = {
CHECKDATA_PROP(nsCSSMargin, mOutlineColor, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSMargin, mOutlineWidth, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSMargin, mOutlineStyle, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSMargin, mOutlineRadius, CHECKDATA_RECT, PR_TRUE)
};
static const PropertyCheckData ListCheckProperties[] = {
CHECKDATA_PROP(nsCSSList, mType, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSList, mImage, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSList, mPosition, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSList, mImageRegion, CHECKDATA_RECT, PR_TRUE)
};
static const PropertyCheckData ColorCheckProperties[] = {
CHECKDATA_PROP(nsCSSColor, mColor, CHECKDATA_VALUE, PR_FALSE)
};
static const PropertyCheckData BackgroundCheckProperties[] = {
CHECKDATA_PROP(nsCSSColor, mBackAttachment, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSColor, mBackRepeat, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSColor, mBackColor, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSColor, mBackImage, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSColor, mBackPositionX, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSColor, mBackPositionY, CHECKDATA_VALUE, PR_FALSE)
};
static const PropertyCheckData PositionCheckProperties[] = {
CHECKDATA_PROP(nsCSSPosition, mOffset, CHECKDATA_RECT, PR_TRUE),
CHECKDATA_PROP(nsCSSPosition, mWidth, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSPosition, mMinWidth, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSPosition, mMaxWidth, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSPosition, mHeight, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSPosition, mMinHeight, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSPosition, mMaxHeight, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSPosition, mBoxSizing, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSPosition, mZIndex, CHECKDATA_VALUE, PR_FALSE)
};
static const PropertyCheckData TableCheckProperties[] = {
CHECKDATA_PROP(nsCSSTable, mLayout, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSTable, mFrame, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSTable, mRules, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSTable, mCols, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSTable, mSpan, CHECKDATA_VALUE, PR_FALSE)
};
static const PropertyCheckData TableBorderCheckProperties[] = {
CHECKDATA_PROP(nsCSSTable, mBorderCollapse, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSTable, mBorderSpacingX, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSTable, mBorderSpacingY, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSTable, mCaptionSide, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSTable, mEmptyCells, CHECKDATA_VALUE, PR_FALSE)
};
static const PropertyCheckData ContentCheckProperties[] = {
CHECKDATA_PROP(nsCSSContent, mContent, CHECKDATA_VALUELIST, PR_FALSE),
CHECKDATA_PROP(nsCSSContent, mMarkerOffset, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSContent, mCounterIncrement, CHECKDATA_COUNTERDATA, PR_FALSE),
CHECKDATA_PROP(nsCSSContent, mCounterReset, CHECKDATA_COUNTERDATA, PR_FALSE)
};
static const PropertyCheckData QuotesCheckProperties[] = {
CHECKDATA_PROP(nsCSSContent, mQuotes, CHECKDATA_QUOTES, PR_FALSE)
};
static const PropertyCheckData TextCheckProperties[] = {
CHECKDATA_PROP(nsCSSText, mLineHeight, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSText, mTextIndent, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSText, mWordSpacing, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSText, mLetterSpacing, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSText, mTextAlign, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSText, mTextTransform, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSText, mWhiteSpace, CHECKDATA_VALUE, PR_FALSE)
};
static const PropertyCheckData TextResetCheckProperties[] = {
CHECKDATA_PROP(nsCSSText, mDecoration, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSText, mVerticalAlign, CHECKDATA_VALUE, PR_TRUE),
CHECKDATA_PROP(nsCSSText, mUnicodeBidi, CHECKDATA_VALUE, PR_FALSE)
};
static const PropertyCheckData UserInterfaceCheckProperties[] = {
CHECKDATA_PROP(nsCSSUserInterface, mUserInput, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSUserInterface, mUserModify, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSUserInterface, mUserFocus, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSUserInterface, mCursor, CHECKDATA_VALUELIST, PR_FALSE)
};
static const PropertyCheckData UIResetCheckProperties[] = {
CHECKDATA_PROP(nsCSSUserInterface, mUserSelect, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSUserInterface, mResizer, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSUserInterface, mKeyEquivalent, CHECKDATA_VALUELIST, PR_FALSE),
CHECKDATA_PROP(nsCSSUserInterface, mForceBrokenImageIcon, CHECKDATA_VALUE, PR_FALSE)
};
#ifdef INCLUDE_XUL
static const PropertyCheckData XULCheckProperties[] = {
CHECKDATA_PROP(nsCSSXUL, mBoxAlign, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSXUL, mBoxDirection, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSXUL, mBoxFlex, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSXUL, mBoxOrient, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSXUL, mBoxPack, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSXUL, mBoxOrdinal, CHECKDATA_VALUE, PR_FALSE)
};
#endif
#ifdef MOZ_SVG
static const PropertyCheckData SVGCheckProperties[] = {
CHECKDATA_PROP(nsCSSSVG, mFill, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSSVG, mFillOpacity, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSSVG, mFillRule, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSSVG, mStroke, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSSVG, mStrokeDasharray, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSSVG, mStrokeDashoffset, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSSVG, mStrokeLinecap, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSSVG, mStrokeLinejoin, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSSVG, mStrokeMiterlimit, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSSVG, mStrokeOpacity, CHECKDATA_VALUE, PR_FALSE),
CHECKDATA_PROP(nsCSSSVG, mStrokeWidth, CHECKDATA_VALUE, PR_FALSE)
};
#endif
static const StructCheckData gCheckProperties[] = {
#define STYLE_STRUCT(name, checkdata_cb) \
{name##CheckProperties, \
sizeof(name##CheckProperties)/sizeof(PropertyCheckData), \
checkdata_cb},
#include "nsStyleStructList.h"
#undef STYLE_STRUCT
{nsnull, 0, nsnull}
};
// XXXldb Taking the address of a reference is evil.
inline const nsCSSValue&
ValueAtOffset(const nsCSSStruct& aCSSStruct, size_t aOffset)
{
return * NS_REINTERPRET_CAST(const nsCSSValue*,
NS_REINTERPRET_CAST(const char*, &aCSSStruct) + aOffset);
}
inline const nsCSSRect*
RectAtOffset(const nsCSSStruct& aCSSStruct, size_t aOffset)
{
return * NS_REINTERPRET_CAST(const nsCSSRect*const*,
NS_REINTERPRET_CAST(const char*, &aCSSStruct) + aOffset);
}
inline const nsCSSValueList*
ValueListAtOffset(const nsCSSStruct& aCSSStruct, size_t aOffset)
{
return * NS_REINTERPRET_CAST(const nsCSSValueList*const*,
NS_REINTERPRET_CAST(const char*, &aCSSStruct) + aOffset);
}
inline const nsCSSValueList**
ValueListArrayAtOffset(const nsCSSStruct& aCSSStruct, size_t aOffset)
{
return * NS_REINTERPRET_CAST(const nsCSSValueList**const*,
NS_REINTERPRET_CAST(const char*, &aCSSStruct) + aOffset);
}
inline const nsCSSCounterData*
CounterDataAtOffset(const nsCSSStruct& aCSSStruct, size_t aOffset)
{
return * NS_REINTERPRET_CAST(const nsCSSCounterData*const*,
NS_REINTERPRET_CAST(const char*, &aCSSStruct) + aOffset);
}
inline const nsCSSQuotes*
QuotesAtOffset(const nsCSSStruct& aCSSStruct, size_t aOffset)
{
return * NS_REINTERPRET_CAST(const nsCSSQuotes*const*,
NS_REINTERPRET_CAST(const char*, &aCSSStruct) + aOffset);
}
inline nsRuleNode::RuleDetail
nsRuleNode::CheckSpecifiedProperties(const nsStyleStructID aSID,
const nsCSSStruct& aCSSStruct)
{
const StructCheckData *structData = gCheckProperties + aSID;
if (structData->callback) {
nsRuleNode::RuleDetail res = (*structData->callback)(aCSSStruct);
if (res != eRuleUnknown)
return res;
}
// Build a count of the:
PRUint32 total = 0, // total number of props in the struct
specified = 0, // number that were specified for this node
inherited = 0; // number that were 'inherit' (and not
// eCSSUnit_Inherit) for this node
PRBool canHaveExplicitInherit = PR_FALSE;
for (const PropertyCheckData *prop = structData->props,
*prop_end = prop + structData->nprops;
prop != prop_end;
++prop)
switch (prop->type) {
case CHECKDATA_VALUE:
{
++total;
const nsCSSValue& value = ValueAtOffset(aCSSStruct, prop->offset);
if (eCSSUnit_Null != value.GetUnit()) {
++specified;
if (eCSSUnit_Inherit == value.GetUnit()) {
++inherited;
if (prop->mayHaveExplicitInherit)
canHaveExplicitInherit = PR_TRUE;
}
}
}
break;
case CHECKDATA_RECT:
total += 4;
if (prop->mayHaveExplicitInherit)
ExamineRectCoordProperties(RectAtOffset(aCSSStruct, prop->offset),
specified, inherited,
canHaveExplicitInherit);
else
ExamineRectProperties(RectAtOffset(aCSSStruct, prop->offset),
specified, inherited);
break;
case CHECKDATA_VALUELIST:
{
++total;
const nsCSSValueList* valueList =
ValueListAtOffset(aCSSStruct, prop->offset);
if (valueList) {
++specified;
if (eCSSUnit_Inherit == valueList->mValue.GetUnit()) {
++inherited;
if (prop->mayHaveExplicitInherit)
canHaveExplicitInherit = PR_TRUE;
}
}
}
break;
case CHECKDATA_COUNTERDATA:
{
++total;
NS_ASSERTION(!prop->mayHaveExplicitInherit,
"counters can't be coordinates");
const nsCSSCounterData* counterData =
CounterDataAtOffset(aCSSStruct, prop->offset);
if (counterData) {
++specified;
if (eCSSUnit_Inherit == counterData->mCounter.GetUnit()) {
++inherited;
}
}
}
break;
case CHECKDATA_QUOTES:
{
++total;
NS_ASSERTION(!prop->mayHaveExplicitInherit,
"quotes can't be coordinates");
const nsCSSQuotes* quotes =
QuotesAtOffset(aCSSStruct, prop->offset);
if (quotes) {
++specified;
if (eCSSUnit_Inherit == quotes->mOpen.GetUnit()) {
++inherited;
}
}
}
break;
case CHECKDATA_VALUELIST_ARRAY:
{
total += 4;
const nsCSSValueList** valueArray =
ValueListArrayAtOffset(aCSSStruct, prop->offset);
if (valueArray) {
for (PRInt32 i = 0; i < 4; i++) {
const nsCSSValueList* valList = valueArray[i];
if (valList) {
++specified;
if (eCSSUnit_Inherit == valList->mValue.GetUnit()) {
++inherited;
NS_ASSERTION(!prop->mayHaveExplicitInherit, "Value list arrays can't inherit!");
}
}
}
}
}
break;
case CHECKDATA_SHADOW:
NS_NOTYETIMPLEMENTED("nsCSSShadow not yet transferred to structs");
break;
default:
NS_NOTREACHED("unknown type");
break;
}
#if 0
printf("CheckSpecifiedProperties: SID=%d total=%d spec=%d inh=%d chei=%s.\n",
aSID, total, specified, inherited, canHaveExplicitInherit?"true":"false");
#endif
if (canHaveExplicitInherit) {
if (specified == total)
return eRuleFullMixed;
return eRulePartialMixed;
}
if (inherited == total)
return eRuleFullInherited;
if (specified == total) {
if (inherited == 0)
return eRuleFullReset;
return eRuleFullMixed;
}
if (specified == 0)
return eRuleNone;
if (specified == inherited)
return eRulePartialInherited;
if (inherited == 0)
return eRulePartialReset;
return eRulePartialMixed;
}
const nsStyleStruct*
nsRuleNode::GetDisplayData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSDisplay displayData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Display, mPresContext, aContext);
ruleData.mDisplayData = &displayData;
nsCSSRect clip;
displayData.mClip = &clip;
const nsStyleStruct* res = WalkRuleTree(eStyleStruct_Display, aContext, &ruleData, &displayData, aComputeData);
displayData.mClip = nsnull;
return res;
}
const nsStyleStruct*
nsRuleNode::GetVisibilityData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSDisplay displayData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Visibility, mPresContext, aContext);
ruleData.mDisplayData = &displayData;
return WalkRuleTree(eStyleStruct_Visibility, aContext, &ruleData, &displayData, aComputeData);
}
const nsStyleStruct*
nsRuleNode::GetTextData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSText textData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Text, mPresContext, aContext);
ruleData.mTextData = &textData;
return WalkRuleTree(eStyleStruct_Text, aContext, &ruleData, &textData, aComputeData);
}
const nsStyleStruct*
nsRuleNode::GetTextResetData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSText textData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_TextReset, mPresContext, aContext);
ruleData.mTextData = &textData;
return WalkRuleTree(eStyleStruct_TextReset, aContext, &ruleData, &textData, aComputeData);
}
const nsStyleStruct*
nsRuleNode::GetUserInterfaceData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSUserInterface uiData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_UserInterface, mPresContext, aContext);
ruleData.mUIData = &uiData;
const nsStyleStruct* res = WalkRuleTree(eStyleStruct_UserInterface, aContext, &ruleData, &uiData, aComputeData);
uiData.mCursor = nsnull;
return res;
}
const nsStyleStruct*
nsRuleNode::GetUIResetData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSUserInterface uiData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_UIReset, mPresContext, aContext);
ruleData.mUIData = &uiData;
const nsStyleStruct* res = WalkRuleTree(eStyleStruct_UIReset, aContext, &ruleData, &uiData, aComputeData);
uiData.mKeyEquivalent = nsnull;
return res;
}
const nsStyleStruct*
nsRuleNode::GetFontData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSFont fontData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Font, mPresContext, aContext);
ruleData.mFontData = &fontData;
return WalkRuleTree(eStyleStruct_Font, aContext, &ruleData, &fontData, aComputeData);
}
const nsStyleStruct*
nsRuleNode::GetColorData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSColor colorData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Color, mPresContext, aContext);
ruleData.mColorData = &colorData;
return WalkRuleTree(eStyleStruct_Color, aContext, &ruleData, &colorData, aComputeData);
}
const nsStyleStruct*
nsRuleNode::GetBackgroundData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSColor colorData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Background, mPresContext, aContext);
ruleData.mColorData = &colorData;
return WalkRuleTree(eStyleStruct_Background, aContext, &ruleData, &colorData, aComputeData);
}
const nsStyleStruct*
nsRuleNode::GetMarginData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSMargin marginData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Margin, mPresContext, aContext);
ruleData.mMarginData = &marginData;
nsCSSRect margin;
marginData.mMargin = &margin;
const nsStyleStruct* res = WalkRuleTree(eStyleStruct_Margin, aContext, &ruleData, &marginData, aComputeData);
marginData.mMargin = nsnull;
return res;
}
const nsStyleStruct*
nsRuleNode::GetBorderData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSMargin marginData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Border, mPresContext, aContext);
ruleData.mMarginData = &marginData;
nsCSSRect borderWidth;
nsCSSRect borderColor;
nsCSSRect borderStyle;
nsCSSRect borderRadius;
nsCSSValueList* borderColors[4];
for (PRInt32 i = 0; i < 4; i++)
borderColors[i] = nsnull;
marginData.mBorderWidth = &borderWidth;
marginData.mBorderColor = &borderColor;
marginData.mBorderStyle = &borderStyle;
marginData.mBorderRadius = &borderRadius;
marginData.mBorderColors = borderColors;
const nsStyleStruct* res = WalkRuleTree(eStyleStruct_Border, aContext, &ruleData, &marginData, aComputeData);
marginData.mBorderWidth = marginData.mBorderColor = marginData.mBorderStyle = marginData.mBorderRadius = nsnull;
marginData.mBorderColors = nsnull;
return res;
}
const nsStyleStruct*
nsRuleNode::GetPaddingData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSMargin marginData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Padding, mPresContext, aContext);
ruleData.mMarginData = &marginData;
nsCSSRect padding;
marginData.mPadding = &padding;
const nsStyleStruct* res = WalkRuleTree(eStyleStruct_Padding, aContext, &ruleData, &marginData, aComputeData);
marginData.mPadding = nsnull;
return res;
}
const nsStyleStruct*
nsRuleNode::GetOutlineData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSMargin marginData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Outline, mPresContext, aContext);
ruleData.mMarginData = &marginData;
nsCSSRect outlineRadius;
marginData.mOutlineRadius = &outlineRadius;
const nsStyleStruct* res = WalkRuleTree(eStyleStruct_Outline, aContext, &ruleData, &marginData, aComputeData);
marginData.mOutlineRadius = nsnull;
return res;
}
const nsStyleStruct*
nsRuleNode::GetListData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSList listData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_List, mPresContext, aContext);
ruleData.mListData = &listData;
nsCSSRect imageRegion;
listData.mImageRegion = &imageRegion;
const nsStyleStruct* res = WalkRuleTree(eStyleStruct_List, aContext, &ruleData, &listData, aComputeData);
listData.mImageRegion = nsnull;
return res;
}
const nsStyleStruct*
nsRuleNode::GetPositionData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSPosition posData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Position, mPresContext, aContext);
ruleData.mPositionData = &posData;
nsCSSRect offset;
posData.mOffset = &offset;
const nsStyleStruct* res = WalkRuleTree(eStyleStruct_Position, aContext, &ruleData, &posData, aComputeData);
posData.mOffset = nsnull;
return res;
}
const nsStyleStruct*
nsRuleNode::GetTableData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSTable tableData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Table, mPresContext, aContext);
ruleData.mTableData = &tableData;
return WalkRuleTree(eStyleStruct_Table, aContext, &ruleData, &tableData, aComputeData);
}
const nsStyleStruct*
nsRuleNode::GetTableBorderData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSTable tableData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_TableBorder, mPresContext, aContext);
ruleData.mTableData = &tableData;
return WalkRuleTree(eStyleStruct_TableBorder, aContext, &ruleData, &tableData, aComputeData);
}
const nsStyleStruct*
nsRuleNode::GetContentData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSContent contentData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Content, mPresContext, aContext);
ruleData.mContentData = &contentData;
const nsStyleStruct* res = WalkRuleTree(eStyleStruct_Content, aContext, &ruleData, &contentData, aComputeData);
contentData.mCounterIncrement = contentData.mCounterReset = nsnull;
contentData.mContent = nsnull; // We are sharing with some style rule. It really owns the data.
return res;
}
const nsStyleStruct*
nsRuleNode::GetQuotesData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSContent contentData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Quotes, mPresContext, aContext);
ruleData.mContentData = &contentData;
const nsStyleStruct* res = WalkRuleTree(eStyleStruct_Quotes, aContext, &ruleData, &contentData, aComputeData);
contentData.mQuotes = nsnull; // We are sharing with some style rule. It really owns the data.
return res;
}
#ifdef INCLUDE_XUL
const nsStyleStruct*
nsRuleNode::GetXULData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSXUL xulData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_XUL, mPresContext, aContext);
ruleData.mXULData = &xulData;
return WalkRuleTree(eStyleStruct_XUL, aContext, &ruleData, &xulData, aComputeData);
}
#endif
#ifdef MOZ_SVG
const nsStyleStruct*
nsRuleNode::GetSVGData(nsIStyleContext* aContext, PRBool aComputeData)
{
nsCSSSVG svgData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_SVG, mPresContext, aContext);
ruleData.mSVGData = &svgData;
return WalkRuleTree(eStyleStruct_SVG, aContext, &ruleData, &svgData, aComputeData);
}
#endif
const nsStyleStruct*
nsRuleNode::WalkRuleTree(const nsStyleStructID aSID,
nsIStyleContext* aContext,
nsRuleData* aRuleData,
nsCSSStruct* aSpecificData,
PRBool aComputeData)
{
// We start at the most specific rule in the tree.
nsStyleStruct* startStruct = nsnull;
nsRuleNode* ruleNode = this;
nsRuleNode* highestNode = nsnull; // The highest node in the rule tree
// that has the same properties
// specified for struct |aSID| as
// |this| does.
nsRuleNode* rootNode = this; // After the loop below, this will be the
// highest node that we've walked without
// finding cached data on the rule tree.
// If we don't find any cached data, it
// will be the root. (XXX misnamed)
RuleDetail detail = eRuleNone;
PRUint32 bit = nsCachedStyleData::GetBitForSID(aSID);
while (ruleNode) {
// See if this rule node has cached the fact that the remaining
// nodes along this path specify no data whatsoever.
if (ruleNode->mNoneBits & bit)
break;
// If the dependent bit is set on a rule node for this struct, that
// means its rule won't have any information to add, so skip it.
// XXXldb I don't understand why we need to check |detail| here, but
// we do.
if (detail == eRuleNone)
while (ruleNode->mDependentBits & bit) {
NS_ASSERTION(ruleNode->mStyleData.GetStyleData(aSID) == nsnull,
"dependent bit with cached data makes no sense");
// Climb up to the next rule in the tree (a less specific rule).
rootNode = ruleNode;
ruleNode = ruleNode->mParent;
NS_ASSERTION(!(ruleNode->mNoneBits & bit), "can't have both bits set");
}
// Check for cached data after the inner loop above -- otherwise
// we'll miss it.
startStruct = ruleNode->mStyleData.GetStyleData(aSID);
if (startStruct)
break; // We found a rule with fully specified data. We don't
// need to go up the tree any further, since the remainder
// of this branch has already been computed.
// Ask the rule to fill in the properties that it specifies.
nsIStyleRule *rule = ruleNode->mRule;
if (rule)
rule->MapRuleInfoInto(aRuleData);
// Now we check to see how many properties have been specified by
// the rules we've examined so far.
RuleDetail oldDetail = detail;
detail = CheckSpecifiedProperties(aSID, *aSpecificData);
if (oldDetail == eRuleNone && detail != eRuleNone)
highestNode = ruleNode;
if (detail == eRuleFullReset ||
detail == eRuleFullMixed ||
detail == eRuleFullInherited)
break; // We don't need to examine any more rules. All properties
// have been fully specified.
// Climb up to the next rule in the tree (a less specific rule).
rootNode = ruleNode;
ruleNode = ruleNode->mParent;
}
PRBool isReset = nsCachedStyleData::IsReset(aSID);
if (!highestNode)
highestNode = rootNode;
if (!aRuleData->mCanStoreInRuleTree)
detail = eRulePartialMixed; // Treat as though some data is specified to avoid
// the optimizations and force data computation.
if (detail == eRuleNone && startStruct && !aRuleData->mPostResolveCallback) {
// We specified absolutely no rule information, but a parent rule in the tree
// specified all the rule information. We set a bit along the branch from our
// node in the tree to the node that specified the data that tells nodes on that
// branch that they never need to examine their rules for this particular struct type
// ever again.
PropagateDependentBit(bit, ruleNode);
return startStruct;
}
else if (!startStruct && ((!isReset && (detail == eRuleNone || detail == eRulePartialInherited))
|| detail == eRuleFullInherited)) {
// We specified no non-inherited information and neither did any of
// our parent rules.
// We set a bit along the branch from the highest node (ruleNode)
// down to our node (this) indicating that no non-inherited data was
// specified. This bit is guaranteed to be set already on the path
// from the highest node to the root node in the case where
// (detail == eRuleNone), which is the most common case here.
// We must check |!isReset| because the Compute*Data functions for
// reset structs wouldn't handle none bits correctly.
if (highestNode != this && !isReset)
PropagateNoneBit(bit, highestNode);
// All information must necessarily be inherited from our parent style context.
// In the absence of any computed data in the rule tree and with
// no rules specified that didn't have values of 'inherit', we should check our parent.
nsCOMPtr<nsIStyleContext> parentContext =
dont_AddRef(aContext->GetParent());
if (parentContext) {
// We have a parent, and so we should just inherit from the parent.
// Set the inherit bits on our context. These bits tell the style context that
// it never has to go back to the rule tree for data. Instead the style context tree
// should be walked to find the data.
const nsStyleStruct* parentStruct = parentContext->GetStyleData(aSID);
aContext->AddStyleBit(bit); // makes const_cast OK.
aContext->SetStyle(aSID, NS_CONST_CAST(nsStyleStruct*, parentStruct));
return parentStruct;
}
else
// We are the root. In the case of fonts, the default values just
// come from the pres context.
return SetDefaultOnRoot(aSID, aContext);
}
// We need to compute the data from the information that the rules specified.
if (!aComputeData)
return nsnull;
ComputeStyleDataFn fn = gComputeStyleDataFn[aSID];
const nsStyleStruct* res = (this->*fn)(startStruct, *aSpecificData, aContext, highestNode, detail,
!aRuleData->mCanStoreInRuleTree);
// If we have a post-resolve callback, handle that now.
if (aRuleData->mPostResolveCallback)
(*aRuleData->mPostResolveCallback)((nsStyleStruct*)res, aRuleData);
// Now return the result.
return res;
}
static nscoord
ZoomFont(nsIPresContext* aPresContext, nscoord aInSize)
{
nsCOMPtr<nsIDeviceContext> dc;
aPresContext->GetDeviceContext(getter_AddRefs(dc));
float textZoom;
dc->GetTextZoom(textZoom);
return nscoord(aInSize * textZoom);
}
const nsStyleStruct*
nsRuleNode::SetDefaultOnRoot(const nsStyleStructID aSID, nsIStyleContext* aContext)
{
switch (aSID) {
case eStyleStruct_Font:
{
const nsFont* defaultFont;
mPresContext->GetDefaultFont(kPresContext_DefaultVariableFont_ID, &defaultFont);
nsStyleFont* fontData = new (mPresContext) nsStyleFont(*defaultFont);
fontData->mSize = fontData->mFont.size =
ZoomFont(mPresContext, fontData->mFont.size);
aContext->SetStyle(eStyleStruct_Font, fontData);
return fontData;
}
case eStyleStruct_Display:
{
nsStyleDisplay* disp = new (mPresContext) nsStyleDisplay();
aContext->SetStyle(eStyleStruct_Display, disp);
return disp;
}
case eStyleStruct_Visibility:
{
nsStyleVisibility* vis = new (mPresContext) nsStyleVisibility(mPresContext);
aContext->SetStyle(eStyleStruct_Visibility, vis);
return vis;
}
case eStyleStruct_Text:
{
nsStyleText* text = new (mPresContext) nsStyleText();
aContext->SetStyle(eStyleStruct_Text, text);
return text;
}
case eStyleStruct_TextReset:
{
nsStyleTextReset* text = new (mPresContext) nsStyleTextReset();
aContext->SetStyle(eStyleStruct_TextReset, text);
return text;
}
case eStyleStruct_Color:
{
nsStyleColor* color = new (mPresContext) nsStyleColor(mPresContext);
aContext->SetStyle(eStyleStruct_Color, color);
return color;
}
case eStyleStruct_Background:
{
nsStyleBackground* bg = new (mPresContext) nsStyleBackground(mPresContext);
aContext->SetStyle(eStyleStruct_Background, bg);
return bg;
}
case eStyleStruct_Margin:
{
nsStyleMargin* margin = new (mPresContext) nsStyleMargin();
aContext->SetStyle(eStyleStruct_Margin, margin);
return margin;
}
case eStyleStruct_Border:
{
nsStyleBorder* border = new (mPresContext) nsStyleBorder(mPresContext);
aContext->SetStyle(eStyleStruct_Border, border);
return border;
}
case eStyleStruct_Padding:
{
nsStylePadding* padding = new (mPresContext) nsStylePadding();
aContext->SetStyle(eStyleStruct_Padding, padding);
return padding;
}
case eStyleStruct_Outline:
{
nsStyleOutline* outline = new (mPresContext) nsStyleOutline(mPresContext);
aContext->SetStyle(eStyleStruct_Outline, outline);
return outline;
}
case eStyleStruct_List:
{
nsStyleList* list = new (mPresContext) nsStyleList();
aContext->SetStyle(eStyleStruct_List, list);
return list;
}
case eStyleStruct_Position:
{
nsStylePosition* pos = new (mPresContext) nsStylePosition();
aContext->SetStyle(eStyleStruct_Position, pos);
return pos;
}
case eStyleStruct_Table:
{
nsStyleTable* table = new (mPresContext) nsStyleTable();
aContext->SetStyle(eStyleStruct_Table, table);
return table;
}
case eStyleStruct_TableBorder:
{
nsStyleTableBorder* table = new (mPresContext) nsStyleTableBorder(mPresContext);
aContext->SetStyle(eStyleStruct_TableBorder, table);
return table;
}
case eStyleStruct_Content:
{
nsStyleContent* content = new (mPresContext) nsStyleContent();
aContext->SetStyle(eStyleStruct_Content, content);
return content;
}
case eStyleStruct_Quotes:
{
nsStyleQuotes* quotes = new (mPresContext) nsStyleQuotes();
aContext->SetStyle(eStyleStruct_Quotes, quotes);
return quotes;
}
case eStyleStruct_UserInterface:
{
nsStyleUserInterface* ui = new (mPresContext) nsStyleUserInterface();
aContext->SetStyle(eStyleStruct_UserInterface, ui);
return ui;
}
case eStyleStruct_UIReset:
{
nsStyleUIReset* ui = new (mPresContext) nsStyleUIReset();
aContext->SetStyle(eStyleStruct_UIReset, ui);
return ui;
}
#ifdef INCLUDE_XUL
case eStyleStruct_XUL:
{
nsStyleXUL* xul = new (mPresContext) nsStyleXUL();
aContext->SetStyle(eStyleStruct_XUL, xul);
return xul;
}
#endif
#ifdef MOZ_SVG
case eStyleStruct_SVG:
{
nsStyleSVG* svg = new (mPresContext) nsStyleSVG();
aContext->SetStyle(eStyleStruct_SVG, svg);
return svg;
}
#endif
}
return nsnull;
}
nsRuleNode::ComputeStyleDataFn
nsRuleNode::gComputeStyleDataFn[] = {
#define STYLE_STRUCT(name, checkdata_cb) \
&nsRuleNode::Compute##name##Data,
#include "nsStyleStructList.h"
#undef STYLE_STRUCT
nsnull
};
static void
SetFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
nscoord aMinFontSize, PRBool aUseDocumentFonts, PRBool aChromeOverride,
PRBool aIsGeneric, const nsCSSFont& aFontData,
const nsFont& aDefaultFont, const nsStyleFont* aParentFont,
nsStyleFont* aFont, PRBool aZoom, PRBool& aInherited)
{
const nsFont* defaultVariableFont;
const nsFont* defaultFixedFont;
aPresContext->GetDefaultFont(kPresContext_DefaultVariableFont_ID, &defaultVariableFont);
aPresContext->GetDefaultFont(kPresContext_DefaultFixedFont_ID, &defaultFixedFont);
// font-family: string list, enum, inherit
if (eCSSUnit_String == aFontData.mFamily.GetUnit()) {
// set the correct font if we are using DocumentFonts OR we are overriding for XUL
// MJA: bug 31816
if (aChromeOverride || aUseDocumentFonts) {
if (!aIsGeneric) {
// only bother appending fallback fonts if this isn't a fallback generic font itself
aFont->mFont.name.Append((PRUnichar)',');
aFont->mFont.name.Append(aDefaultFont.name);
}
}
else {
// now set to defaults
aFont->mFont.name = aDefaultFont.name;
}
}
else if (eCSSUnit_Enumerated == aFontData.mFamily.GetUnit()) {
nsSystemFontID sysID;
switch (aFontData.mFamily.GetIntValue()) {
// If you add fonts to this list, you need to also patch the list
// in CheckFontCallback (also in this file).
case NS_STYLE_FONT_CAPTION: sysID = eSystemFont_Caption; break; // css2
case NS_STYLE_FONT_ICON: sysID = eSystemFont_Icon; break;
case NS_STYLE_FONT_MENU: sysID = eSystemFont_Menu; break;
case NS_STYLE_FONT_MESSAGE_BOX: sysID = eSystemFont_MessageBox; break;
case NS_STYLE_FONT_SMALL_CAPTION: sysID = eSystemFont_SmallCaption; break;
case NS_STYLE_FONT_STATUS_BAR: sysID = eSystemFont_StatusBar; break;
case NS_STYLE_FONT_WINDOW: sysID = eSystemFont_Window; break; // css3
case NS_STYLE_FONT_DOCUMENT: sysID = eSystemFont_Document; break;
case NS_STYLE_FONT_WORKSPACE: sysID = eSystemFont_Workspace; break;
case NS_STYLE_FONT_DESKTOP: sysID = eSystemFont_Desktop; break;
case NS_STYLE_FONT_INFO: sysID = eSystemFont_Info; break;
case NS_STYLE_FONT_DIALOG: sysID = eSystemFont_Dialog; break;
case NS_STYLE_FONT_BUTTON: sysID = eSystemFont_Button; break;
case NS_STYLE_FONT_PULL_DOWN_MENU:sysID = eSystemFont_PullDownMenu; break;
case NS_STYLE_FONT_LIST: sysID = eSystemFont_List; break;
case NS_STYLE_FONT_FIELD: sysID = eSystemFont_Field; break;
}
nsCOMPtr<nsIDeviceContext> dc;
aPresContext->GetDeviceContext(getter_AddRefs(dc));
if (dc) {
// GetSystemFont sets the font face but not necessarily the size
aFont->mFont.size = defaultVariableFont->size;
if (NS_FAILED(dc->GetSystemFont(sysID, &aFont->mFont))) {
aFont->mFont.name = defaultVariableFont->name;
}
aFont->mSize = aFont->mFont.size; // this becomes our cascading size
}
// XXXldb All of this platform-specific stuff should be in the
// nsIDeviceContext implementations, not here.
#ifdef XP_WIN
//
// As far as I can tell the system default fonts and sizes for
// on MS-Windows for Buttons, Listboxes/Comboxes and Text Fields are
// all pre-determined and cannot be changed by either the control panel
// or programmtically.
//
switch (sysID) {
// Fields (text fields)
// Button and Selects (listboxes/comboboxes)
// We use whatever font is defined by the system. Which it appears
// (and the assumption is) it is always a proportional font. Then we
// always use 2 points smaller than what the browser has defined as
// the default proportional font.
case eSystemFont_Field:
case eSystemFont_Button:
case eSystemFont_List:
// Assumption: system defined font is proportional
aFont->mSize = PR_MAX(defaultVariableFont->size - NSIntPointsToTwips(2), 0);
break;
}
#endif
}
else if (eCSSUnit_Inherit == aFontData.mFamily.GetUnit()) {
aInherited = PR_TRUE;
aFont->mFont.name = aParentFont->mFont.name;
}
else if (eCSSUnit_Initial == aFontData.mFamily.GetUnit()) {
aFont->mFont.name = aDefaultFont.name;
}
// font-style: enum, normal, inherit
if (eCSSUnit_Enumerated == aFontData.mStyle.GetUnit()) {
aFont->mFont.style = aFontData.mStyle.GetIntValue();
}
else if (eCSSUnit_Normal == aFontData.mStyle.GetUnit()) {
aFont->mFont.style = NS_STYLE_FONT_STYLE_NORMAL;
}
else if (eCSSUnit_Inherit == aFontData.mStyle.GetUnit()) {
aInherited = PR_TRUE;
aFont->mFont.style = aParentFont->mFont.style;
}
else if (eCSSUnit_Initial == aFontData.mStyle.GetUnit()) {
aFont->mFont.style = aDefaultFont.style;
}
// font-variant: enum, normal, inherit
if (eCSSUnit_Enumerated == aFontData.mVariant.GetUnit()) {
aFont->mFont.variant = aFontData.mVariant.GetIntValue();
}
else if (eCSSUnit_Normal == aFontData.mVariant.GetUnit()) {
aFont->mFont.variant = NS_STYLE_FONT_VARIANT_NORMAL;
}
else if (eCSSUnit_Inherit == aFontData.mVariant.GetUnit()) {
aInherited = PR_TRUE;
aFont->mFont.variant = aParentFont->mFont.variant;
}
else if (eCSSUnit_Initial == aFontData.mVariant.GetUnit()) {
aFont->mFont.variant = aDefaultFont.variant;
}
// font-weight: int, enum, normal, inherit
if (eCSSUnit_Integer == aFontData.mWeight.GetUnit()) {
aFont->mFont.weight = aFontData.mWeight.GetIntValue();
}
else if (eCSSUnit_Enumerated == aFontData.mWeight.GetUnit()) {
PRInt32 value = aFontData.mWeight.GetIntValue();
switch (value) {
case NS_STYLE_FONT_WEIGHT_NORMAL:
case NS_STYLE_FONT_WEIGHT_BOLD:
aFont->mFont.weight = value;
break;
case NS_STYLE_FONT_WEIGHT_BOLDER:
case NS_STYLE_FONT_WEIGHT_LIGHTER:
aInherited = PR_TRUE;
aFont->mFont.weight = nsStyleUtil::ConstrainFontWeight(aParentFont->mFont.weight + value);
break;
}
}
else if (eCSSUnit_Normal == aFontData.mWeight.GetUnit()) {
aFont->mFont.weight = NS_STYLE_FONT_WEIGHT_NORMAL;
}
else if (eCSSUnit_Inherit == aFontData.mWeight.GetUnit()) {
aInherited = PR_TRUE;
aFont->mFont.weight = aParentFont->mFont.weight;
}
else if (eCSSUnit_Initial == aFontData.mWeight.GetUnit()) {
aFont->mFont.weight = aDefaultFont.weight;
}
// font-size: enum, length, percent, inherit
PRBool zoom = aZoom;
if (eCSSUnit_Enumerated == aFontData.mSize.GetUnit()) {
PRInt32 value = aFontData.mSize.GetIntValue();
PRInt32 scaler;
aPresContext->GetFontScaler(&scaler);
float scaleFactor = nsStyleUtil::GetScalingFactor(scaler);
zoom = PR_TRUE;
if ((NS_STYLE_FONT_SIZE_XXSMALL <= value) &&
(value <= NS_STYLE_FONT_SIZE_XXLARGE)) {
aFont->mSize = nsStyleUtil::CalcFontPointSize(value, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
}
else if (NS_STYLE_FONT_SIZE_XXXLARGE == value) {
// <font size="7"> is not specified in CSS, so we don't use eFontSize_CSS.
aFont->mSize = nsStyleUtil::CalcFontPointSize(value, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext);
}
else if (NS_STYLE_FONT_SIZE_LARGER == value ||
NS_STYLE_FONT_SIZE_SMALLER == value) {
aInherited = PR_TRUE;
// Un-zoom so we use the tables correctly. We'll then rezoom due
// to the |zoom = PR_TRUE| above.
nsCOMPtr<nsIDeviceContext> dc;
aPresContext->GetDeviceContext(getter_AddRefs(dc));
float textZoom;
dc->GetTextZoom(textZoom);
nscoord parentSize = nscoord(aParentFont->mSize / textZoom);
if (NS_STYLE_FONT_SIZE_LARGER == value) {
PRInt32 index = nsStyleUtil::FindNextLargerFontSize(parentSize, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
nscoord largerSize = nsStyleUtil::CalcFontPointSize(index, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
aFont->mSize = PR_MAX(largerSize, aParentFont->mSize);
} else {
PRInt32 index = nsStyleUtil::FindNextSmallerFontSize(parentSize, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
nscoord smallerSize = nsStyleUtil::CalcFontPointSize(index, (PRInt32)aDefaultFont.size, scaleFactor, aPresContext, eFontSize_CSS);
aFont->mSize = PR_MIN(smallerSize, aParentFont->mSize);
}
} else {
NS_NOTREACHED("unexpected value");
}
}
else if (aFontData.mSize.IsLengthUnit()) {
aFont->mSize = CalcLength(aFontData.mSize, &aParentFont->mFont, nsnull, aPresContext, aInherited);
zoom = aFontData.mSize.IsFixedLengthUnit() ||
aFontData.mSize.GetUnit() == eCSSUnit_Pixel;
}
else if (eCSSUnit_Percent == aFontData.mSize.GetUnit()) {
aInherited = PR_TRUE;
aFont->mSize = (nscoord)((float)(aParentFont->mSize) * aFontData.mSize.GetPercentValue());
zoom = PR_FALSE;
}
else if (eCSSUnit_Inherit == aFontData.mSize.GetUnit()) {
aInherited = PR_TRUE;
aFont->mSize = aParentFont->mSize;
zoom = PR_FALSE;
}
else if (eCSSUnit_Initial == aFontData.mSize.GetUnit()) {
aFont->mSize = aDefaultFont.size;
zoom = PR_TRUE;
}
// We want to zoom the cascaded size so that em-based measurements,
// line-heights, etc., work.
if (zoom)
aFont->mSize = ZoomFont(aPresContext, aFont->mSize);
// enforce the user' specified minimum font-size on the value that we expose
if (aChromeOverride) {
// the chrome is unconstrained, it always uses our cascading size
aFont->mFont.size = aFont->mSize;
}
else {
aFont->mFont.size = PR_MAX(aFont->mSize, aMinFontSize);
}
// font-size-adjust: number, none, inherit
if (eCSSUnit_Number == aFontData.mSizeAdjust.GetUnit()) {
aFont->mFont.sizeAdjust = aFontData.mSizeAdjust.GetFloatValue();
}
else if (eCSSUnit_None == aFontData.mSizeAdjust.GetUnit()) {
aFont->mFont.sizeAdjust = 0.0f;
}
else if (eCSSUnit_Inherit == aFontData.mSizeAdjust.GetUnit()) {
aInherited = PR_TRUE;
aFont->mFont.sizeAdjust = aParentFont->mFont.sizeAdjust;
}
else if (eCSSUnit_Initial == aFontData.mSizeAdjust.GetUnit()) {
aFont->mFont.sizeAdjust = 0.0f;
}
}
// SetGenericFont:
// - backtrack to an ancestor with the same generic font name (possibly
// up to the root where default values come from the presentation context)
// - re-apply cascading rules from there without caching intermediate values
static void
SetGenericFont(nsIPresContext* aPresContext, nsIStyleContext* aContext,
const nsCSSFont& aFontData, PRUint8 aGenericFontID,
nscoord aMinFontSize, PRBool aUseDocumentFonts,
PRBool aChromeOverride, nsStyleFont* aFont)
{
// walk up the contexts until a context with the desired generic font
nsAutoVoidArray contextPath;
nsCOMPtr<nsIStyleContext> higherContext = getter_AddRefs(aContext->GetParent());
while (higherContext) {
contextPath.AppendElement(higherContext);
const nsStyleFont* higherFont = (const nsStyleFont*)higherContext->GetStyleData(eStyleStruct_Font);
if (higherFont && higherFont->mFlags & aGenericFontID) {
// done walking up the higher contexts
break;
}
higherContext = getter_AddRefs(higherContext->GetParent());
}
// re-apply the cascading rules, starting from the higher context
// If we stopped earlier because we reached the root of the style tree,
// we will start with the default generic font from the presentation
// context. Otherwise we start with the higher context.
const nsFont* defaultFont;
aPresContext->GetDefaultFont(aGenericFontID, &defaultFont);
nsStyleFont parentFont(*defaultFont);
PRInt32 i = contextPath.Count() - 1;
PRBool zoom = PR_TRUE;
if (higherContext) {
nsIStyleContext* context = (nsIStyleContext*)contextPath[i];
nsStyleFont* tmpFont = (nsStyleFont*)context->GetStyleData(eStyleStruct_Font);
parentFont.mFlags = tmpFont->mFlags;
parentFont.mFont = tmpFont->mFont;
parentFont.mSize = tmpFont->mSize;
--i;
zoom = PR_FALSE;
}
aFont->mFlags = parentFont.mFlags;
aFont->mFont = parentFont.mFont;
aFont->mSize = parentFont.mSize;
PRBool dummy;
PRUint32 noneBits;
PRUint32 fontBit = nsCachedStyleData::GetBitForSID(eStyleStruct_Font);
nsRuleNode* ruleNode = nsnull;
nsCOMPtr<nsIStyleRule> rule;
for (; i >= 0; --i) {
nsIStyleContext* context = (nsIStyleContext*)contextPath[i];
nsCSSFont fontData; // Declare a struct with null CSS values.
nsRuleData ruleData(eStyleStruct_Font, aPresContext, context);
ruleData.mFontData = &fontData;
// Trimmed down version of ::WalkRuleTree() to re-apply the style rules
context->GetRuleNode(&ruleNode);
while (ruleNode) {
ruleNode->GetBits(nsRuleNode::eNoneBits, &noneBits);
if (noneBits & fontBit) // no more font rules on this branch, get out
break;
ruleNode->GetRule(getter_AddRefs(rule));
if (rule)
rule->MapRuleInfoInto(&ruleData);
ruleNode = ruleNode->GetParent();
}
// Compute the delta from the information that the rules specified
fontData.mFamily.Reset(); // avoid unnecessary operations in SetFont()
SetFont(aPresContext, context, aMinFontSize,
aUseDocumentFonts, aChromeOverride, PR_TRUE,
fontData, *defaultFont, &parentFont, aFont, zoom, dummy);
// XXX Not sure if we need to do this here
// If we have a post-resolve callback, handle that now.
if (ruleData.mPostResolveCallback)
(ruleData.mPostResolveCallback)((nsStyleStruct*)aFont, &ruleData);
parentFont.mFlags = aFont->mFlags;
parentFont.mFont = aFont->mFont;
parentFont.mSize = aFont->mSize;
zoom = PR_FALSE;
}
// Finish off by applying our own rules. In this case, aFontData
// already has the current cascading information that we want. We
// can just compute the delta from the parent.
SetFont(aPresContext, aContext, aMinFontSize,
aUseDocumentFonts, aChromeOverride, PR_TRUE,
aFontData, *defaultFont, &parentFont, aFont, zoom, dummy);
}
const nsStyleStruct*
nsRuleNode::ComputeFontData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSFont& fontData = NS_STATIC_CAST(const nsCSSFont&, aData);
nsStyleFont* font = nsnull;
const nsStyleFont* parentFont = nsnull;
PRBool inherited = aInherited;
// This optimization is a little weaker here since 'em', etc., for
// 'font-size' require inheritance.
if (parentContext &&
(aRuleDetail != eRuleFullReset ||
(fontData.mSize.IsRelativeLengthUnit() &&
fontData.mSize.GetUnit() != eCSSUnit_Pixel) ||
fontData.mSize.GetUnit() == eCSSUnit_Percent))
parentFont = NS_STATIC_CAST(const nsStyleFont*,
parentContext->GetStyleData(eStyleStruct_Font));
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
font = new (mPresContext) nsStyleFont(*NS_STATIC_CAST(nsStyleFont*, aStartStruct));
else {
// XXXldb What about eRuleFullInherited? Which path is faster?
if (aRuleDetail != eRuleFullMixed && aRuleDetail != eRuleFullReset) {
// No question. We will have to inherit. Go ahead and init
// with inherited vals from parent.
inherited = PR_TRUE;
if (parentFont)
font = new (mPresContext) nsStyleFont(*parentFont);
}
}
PRBool zoom = PR_FALSE;
const nsFont* defaultFont;
if (!font) {
mPresContext->GetDefaultFont(kPresContext_DefaultVariableFont_ID, &defaultFont);
font = new (mPresContext) nsStyleFont(*defaultFont);
zoom = PR_TRUE;
}
if (!parentFont)
parentFont = font;
// See if there is a minimum font-size constraint to honor
nscoord minimumFontSize = 0; // unconstrained by default
mPresContext->GetCachedIntPref(kPresContext_MinimumFontSize, minimumFontSize);
PRBool chromeOverride = PR_FALSE;
PRBool useDocumentFonts = PR_TRUE;
// Figure out if we are a generic font
PRUint8 generic = kGenericFont_NONE;
if (eCSSUnit_String == fontData.mFamily.GetUnit()) {
fontData.mFamily.GetStringValue(font->mFont.name);
nsFont::GetGenericID(font->mFont.name, &generic);
// MJA: bug 31816
// if we are not using document fonts, but this is a XUL document,
// then we set the chromeOverride flag to use the document fonts anyway
mPresContext->GetCachedBoolPref(kPresContext_UseDocumentFonts, useDocumentFonts);
if (!useDocumentFonts) {
// check if the prefs have been disabled for this shell
// - if prefs are disabled then we use the document fonts anyway (yet another override)
PRBool prefsEnabled = PR_TRUE;
nsCOMPtr<nsIPresShell> shell;
mPresContext->GetShell(getter_AddRefs(shell));
if (shell)
shell->ArePrefStyleRulesEnabled(prefsEnabled);
if (!prefsEnabled)
useDocumentFonts = PR_TRUE;
}
}
// See if we are in the chrome
// We only need to know this to determine if we have to use the
// document fonts (overriding the useDocumentFonts flag), or to
// determine if we have to override the minimum font-size constraint.
if (!useDocumentFonts || minimumFontSize > 0) {
nsCOMPtr<nsISupports> container;
nsresult result = mPresContext->GetContainer(getter_AddRefs(container));
if (NS_SUCCEEDED(result) && container) {
nsCOMPtr<nsIDocShellTreeItem> docShell(do_QueryInterface(container, &result));
if (NS_SUCCEEDED(result) && docShell) {
PRInt32 docShellType;
result = docShell->GetItemType(&docShellType);
if (NS_SUCCEEDED(result)) {
chromeOverride = nsIDocShellTreeItem::typeChrome == docShellType;
}
}
}
}
// If we don't have to use document fonts, then we are only entitled
// to use the user's default variable-width font and fixed-width font
if (!useDocumentFonts && !chromeOverride) {
if (generic != kGenericFont_moz_fixed)
generic = kGenericFont_NONE;
}
// Now compute our font struct
if (generic == kGenericFont_NONE) {
// continue the normal processing
// our default font is the most recent generic font
generic = parentFont->mFlags & NS_STYLE_FONT_FACE_MASK;
mPresContext->GetDefaultFont(generic, &defaultFont);
SetFont(mPresContext, aContext, minimumFontSize,
useDocumentFonts, chromeOverride, PR_FALSE,
fontData, *defaultFont, parentFont, font, zoom, inherited);
}
else {
// re-calculate the font as a generic font
inherited = PR_TRUE;
SetGenericFont(mPresContext, aContext, fontData,
generic, minimumFontSize, useDocumentFonts,
chromeOverride, font);
}
// Set our generic font's bit to inform our descendants
font->mFlags &= ~NS_STYLE_FONT_FACE_MASK;
font->mFlags |= generic;
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Font, font);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mInheritedData)
aHighestNode->mStyleData.mInheritedData = new (mPresContext) nsInheritedStyleData;
aHighestNode->mStyleData.mInheritedData->mFontData = font;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Font), aHighestNode);
}
return font;
}
const nsStyleStruct*
nsRuleNode::ComputeTextData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSText& textData = NS_STATIC_CAST(const nsCSSText&, aData);
nsStyleText* text = nsnull;
const nsStyleText* parentText = nsnull;
PRBool inherited = aInherited;
if (parentContext && aRuleDetail != eRuleFullReset)
parentText = NS_STATIC_CAST(const nsStyleText*,
parentContext->GetStyleData(eStyleStruct_Text));
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
text = new (mPresContext) nsStyleText(*NS_STATIC_CAST(nsStyleText*, aStartStruct));
else {
// XXXldb What about eRuleFullInherited? Which path is faster?
if (aRuleDetail != eRuleFullMixed && aRuleDetail != eRuleFullReset) {
// No question. We will have to inherit. Go ahead and init
// with inherited vals from parent.
inherited = PR_TRUE;
if (parentText)
text = new (mPresContext) nsStyleText(*parentText);
}
}
if (!text)
text = new (mPresContext) nsStyleText();
if (!parentText)
parentText = text;
// letter-spacing: normal, length, inherit
SetCoord(textData.mLetterSpacing, text->mLetterSpacing, parentText->mLetterSpacing,
SETCOORD_LH | SETCOORD_NORMAL, aContext, mPresContext, inherited);
// line-height: normal, number, length, percent, inherit
if (eCSSUnit_Percent == textData.mLineHeight.GetUnit()) {
aInherited = PR_TRUE;
const nsStyleFont* font = NS_STATIC_CAST(const nsStyleFont*,
aContext->GetStyleData(eStyleStruct_Font));
text->mLineHeight.SetCoordValue((nscoord)((float)(font->mSize) *
textData.mLineHeight.GetPercentValue()));
} else {
SetCoord(textData.mLineHeight, text->mLineHeight, parentText->mLineHeight,
SETCOORD_LH | SETCOORD_FACTOR | SETCOORD_NORMAL,
aContext, mPresContext, inherited);
if (textData.mLineHeight.IsFixedLengthUnit() ||
textData.mLineHeight.GetUnit() == eCSSUnit_Pixel)
text->mLineHeight.SetCoordValue(
ZoomFont(mPresContext, text->mLineHeight.GetCoordValue()));
}
// text-align: enum, string, inherit
if (eCSSUnit_Enumerated == textData.mTextAlign.GetUnit()) {
text->mTextAlign = textData.mTextAlign.GetIntValue();
}
else if (eCSSUnit_String == textData.mTextAlign.GetUnit()) {
NS_NOTYETIMPLEMENTED("align string");
}
else if (eCSSUnit_Inherit == textData.mTextAlign.GetUnit()) {
inherited = PR_TRUE;
text->mTextAlign = parentText->mTextAlign;
}
else if (eCSSUnit_Initial == textData.mTextAlign.GetUnit())
text->mTextAlign = NS_STYLE_TEXT_ALIGN_DEFAULT;
// text-indent: length, percent, inherit
SetCoord(textData.mTextIndent, text->mTextIndent, parentText->mTextIndent,
SETCOORD_LPH, aContext, mPresContext, inherited);
// text-transform: enum, none, inherit
if (eCSSUnit_Enumerated == textData.mTextTransform.GetUnit()) {
text->mTextTransform = textData.mTextTransform.GetIntValue();
}
else if (eCSSUnit_None == textData.mTextTransform.GetUnit()) {
text->mTextTransform = NS_STYLE_TEXT_TRANSFORM_NONE;
}
else if (eCSSUnit_Inherit == textData.mTextTransform.GetUnit()) {
inherited = PR_TRUE;
text->mTextTransform = parentText->mTextTransform;
}
// white-space: enum, normal, inherit
if (eCSSUnit_Enumerated == textData.mWhiteSpace.GetUnit()) {
text->mWhiteSpace = textData.mWhiteSpace.GetIntValue();
}
else if (eCSSUnit_Normal == textData.mWhiteSpace.GetUnit()) {
text->mWhiteSpace = NS_STYLE_WHITESPACE_NORMAL;
}
else if (eCSSUnit_Inherit == textData.mWhiteSpace.GetUnit()) {
inherited = PR_TRUE;
text->mWhiteSpace = parentText->mWhiteSpace;
}
// word-spacing: normal, length, inherit
SetCoord(textData.mWordSpacing, text->mWordSpacing, parentText->mWordSpacing,
SETCOORD_LH | SETCOORD_NORMAL, aContext, mPresContext, inherited);
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Text, text);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mInheritedData)
aHighestNode->mStyleData.mInheritedData = new (mPresContext) nsInheritedStyleData;
aHighestNode->mStyleData.mInheritedData->mTextData = text;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Text), aHighestNode);
}
return text;
}
const nsStyleStruct*
nsRuleNode::ComputeTextResetData(nsStyleStruct* aStartData, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSText& textData = NS_STATIC_CAST(const nsCSSText&, aData);
nsStyleTextReset* text;
if (aStartData)
// We only need to compute the delta between this computed data and our
// computed data.
text = new (mPresContext) nsStyleTextReset(*NS_STATIC_CAST(nsStyleTextReset*, aStartData));
else
text = new (mPresContext) nsStyleTextReset();
nsStyleTextReset* parentText = text;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentText = (nsStyleTextReset*)parentContext->GetStyleData(eStyleStruct_TextReset);
PRBool inherited = aInherited;
// vertical-align: enum, length, percent, inherit
SetCoord(textData.mVerticalAlign, text->mVerticalAlign, parentText->mVerticalAlign,
SETCOORD_LPH | SETCOORD_ENUMERATED, aContext, mPresContext, inherited);
// text-decoration: none, enum (bit field), inherit
if (eCSSUnit_Enumerated == textData.mDecoration.GetUnit()) {
PRInt32 td = textData.mDecoration.GetIntValue();
text->mTextDecoration = td;
if (td & NS_STYLE_TEXT_DECORATION_PREF_ANCHORS) {
PRBool underlineLinks = PR_TRUE;
nsresult res = mPresContext->GetCachedBoolPref(kPresContext_UnderlineLinks, underlineLinks);
if (NS_SUCCEEDED(res)) {
if (underlineLinks) {
text->mTextDecoration |= NS_STYLE_TEXT_DECORATION_UNDERLINE;
}
else {
text->mTextDecoration &= ~NS_STYLE_TEXT_DECORATION_UNDERLINE;
}
}
}
}
else if (eCSSUnit_None == textData.mDecoration.GetUnit()) {
text->mTextDecoration = NS_STYLE_TEXT_DECORATION_NONE;
}
else if (eCSSUnit_Inherit == textData.mDecoration.GetUnit()) {
inherited = PR_TRUE;
text->mTextDecoration = parentText->mTextDecoration;
}
#ifdef IBMBIDI
// unicode-bidi: enum, normal, inherit
if (eCSSUnit_Normal == textData.mUnicodeBidi.GetUnit() ) {
text->mUnicodeBidi = NS_STYLE_UNICODE_BIDI_NORMAL;
}
else if (eCSSUnit_Enumerated == textData.mUnicodeBidi.GetUnit() ) {
text->mUnicodeBidi = textData.mUnicodeBidi.GetIntValue();
}
else if (eCSSUnit_Inherit == textData.mUnicodeBidi.GetUnit() ) {
inherited = PR_TRUE;
text->mUnicodeBidi = parentText->mUnicodeBidi;
}
#endif // IBMBIDI
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_TextReset, text);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mTextResetData = text;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(TextReset), aHighestNode);
}
return text;
}
const nsStyleStruct*
nsRuleNode::ComputeUserInterfaceData(nsStyleStruct* aStartData,
const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail,
PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSUserInterface& uiData = NS_STATIC_CAST(const nsCSSUserInterface&, aData);
nsStyleUserInterface* ui = nsnull;
const nsStyleUserInterface* parentUI = nsnull;
PRBool inherited = aInherited;
if (parentContext && aRuleDetail != eRuleFullReset)
parentUI = NS_STATIC_CAST(const nsStyleUserInterface*,
parentContext->GetStyleData(eStyleStruct_UserInterface));
if (aStartData)
// We only need to compute the delta between this computed data and our
// computed data.
ui = new (mPresContext) nsStyleUserInterface(*NS_STATIC_CAST(nsStyleUserInterface*, aStartData));
else {
// XXXldb What about eRuleFullInherited? Which path is faster?
if (aRuleDetail != eRuleFullMixed && aRuleDetail != eRuleFullReset) {
// No question. We will have to inherit. Go ahead and init
// with inherited vals from parent.
inherited = PR_TRUE;
if (parentUI)
ui = new (mPresContext) nsStyleUserInterface(*parentUI);
}
}
if (!ui)
ui = new (mPresContext) nsStyleUserInterface();
if (!parentUI)
parentUI = ui;
// cursor: enum, auto, url, inherit
nsCSSValueList* list = uiData.mCursor;
if (nsnull != list) {
// XXX need to deal with multiple URL values
if (eCSSUnit_Enumerated == list->mValue.GetUnit()) {
ui->mCursor = list->mValue.GetIntValue();
}
else if (eCSSUnit_Auto == list->mValue.GetUnit()) {
ui->mCursor = NS_STYLE_CURSOR_AUTO;
}
else if (eCSSUnit_URL == list->mValue.GetUnit()) {
list->mValue.GetStringValue(ui->mCursorImage);
}
else if (eCSSUnit_Inherit == list->mValue.GetUnit()) {
inherited = PR_TRUE;
ui->mCursor = parentUI->mCursor;
}
}
// user-input: auto, none, enum, inherit
if (eCSSUnit_Enumerated == uiData.mUserInput.GetUnit()) {
ui->mUserInput = uiData.mUserInput.GetIntValue();
}
else if (eCSSUnit_Auto == uiData.mUserInput.GetUnit()) {
ui->mUserInput = NS_STYLE_USER_INPUT_AUTO;
}
else if (eCSSUnit_None == uiData.mUserInput.GetUnit()) {
ui->mUserInput = NS_STYLE_USER_INPUT_NONE;
}
else if (eCSSUnit_Inherit == uiData.mUserInput.GetUnit()) {
inherited = PR_TRUE;
ui->mUserInput = parentUI->mUserInput;
}
// user-modify: enum, inherit
if (eCSSUnit_Enumerated == uiData.mUserModify.GetUnit()) {
ui->mUserModify = uiData.mUserModify.GetIntValue();
}
else if (eCSSUnit_Inherit == uiData.mUserModify.GetUnit()) {
inherited = PR_TRUE;
ui->mUserModify = parentUI->mUserModify;
}
// user-focus: none, normal, enum, inherit
if (eCSSUnit_Enumerated == uiData.mUserFocus.GetUnit()) {
ui->mUserFocus = uiData.mUserFocus.GetIntValue();
}
else if (eCSSUnit_None == uiData.mUserFocus.GetUnit()) {
ui->mUserFocus = NS_STYLE_USER_FOCUS_NONE;
}
else if (eCSSUnit_Normal == uiData.mUserFocus.GetUnit()) {
ui->mUserFocus = NS_STYLE_USER_FOCUS_NORMAL;
}
else if (eCSSUnit_Inherit == uiData.mUserFocus.GetUnit()) {
inherited = PR_TRUE;
ui->mUserFocus = parentUI->mUserFocus;
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_UserInterface, ui);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mInheritedData)
aHighestNode->mStyleData.mInheritedData = new (mPresContext) nsInheritedStyleData;
aHighestNode->mStyleData.mInheritedData->mUserInterfaceData = ui;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(UserInterface), aHighestNode);
}
return ui;
}
const nsStyleStruct*
nsRuleNode::ComputeUIResetData(nsStyleStruct* aStartData, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSUserInterface& uiData = NS_STATIC_CAST(const nsCSSUserInterface&, aData);
nsStyleUIReset* ui;
if (aStartData)
// We only need to compute the delta between this computed data and our
// computed data.
ui = new (mPresContext) nsStyleUIReset(*NS_STATIC_CAST(nsStyleUIReset*, aStartData));
else
ui = new (mPresContext) nsStyleUIReset();
const nsStyleUIReset* parentUI = ui;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentUI = NS_STATIC_CAST(const nsStyleUIReset*,
parentContext->GetStyleData(eStyleStruct_UIReset));
PRBool inherited = aInherited;
// user-select: none, enum, inherit
if (eCSSUnit_Enumerated == uiData.mUserSelect.GetUnit()) {
ui->mUserSelect = uiData.mUserSelect.GetIntValue();
}
else if (eCSSUnit_None == uiData.mUserSelect.GetUnit()) {
ui->mUserSelect = NS_STYLE_USER_SELECT_NONE;
}
else if (eCSSUnit_Inherit == uiData.mUserSelect.GetUnit()) {
inherited = PR_TRUE;
ui->mUserSelect = parentUI->mUserSelect;
}
// key-equivalent: none, enum XXX, inherit
nsCSSValueList* keyEquiv = uiData.mKeyEquivalent;
if (keyEquiv) {
// XXX need to deal with multiple values
if (eCSSUnit_Enumerated == keyEquiv->mValue.GetUnit()) {
ui->mKeyEquivalent = PRUnichar(0); // XXX To be implemented
}
else if (eCSSUnit_None == keyEquiv->mValue.GetUnit()) {
ui->mKeyEquivalent = PRUnichar(0);
}
else if (eCSSUnit_Inherit == keyEquiv->mValue.GetUnit()) {
inherited = PR_TRUE;
ui->mKeyEquivalent = parentUI->mKeyEquivalent;
}
}
// resizer: auto, none, enum, inherit
if (eCSSUnit_Enumerated == uiData.mResizer.GetUnit()) {
ui->mResizer = uiData.mResizer.GetIntValue();
}
else if (eCSSUnit_Auto == uiData.mResizer.GetUnit()) {
ui->mResizer = NS_STYLE_RESIZER_AUTO;
}
else if (eCSSUnit_None == uiData.mResizer.GetUnit()) {
ui->mResizer = NS_STYLE_RESIZER_NONE;
}
else if (eCSSUnit_Inherit == uiData.mResizer.GetUnit()) {
inherited = PR_TRUE;
ui->mResizer = parentUI->mResizer;
}
// force-broken-image-icons: integer
if (eCSSUnit_Integer == uiData.mForceBrokenImageIcon.GetUnit()) {
ui->mForceBrokenImageIcon = uiData.mForceBrokenImageIcon.GetIntValue();
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_UIReset, ui);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mUIResetData = ui;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(UIReset), aHighestNode);
}
return ui;
}
const nsStyleStruct*
nsRuleNode::ComputeDisplayData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSDisplay& displayData = NS_STATIC_CAST(const nsCSSDisplay&, aData);
nsStyleDisplay* display;
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
display = new (mPresContext) nsStyleDisplay(*NS_STATIC_CAST(nsStyleDisplay*, aStartStruct));
else
display = new (mPresContext) nsStyleDisplay();
const nsStyleDisplay* parentDisplay = display;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentDisplay = NS_STATIC_CAST(const nsStyleDisplay*,
parentContext->GetStyleData(eStyleStruct_Display));
PRBool inherited = aInherited;
// display: enum, none, inherit
if (eCSSUnit_Enumerated == displayData.mDisplay.GetUnit()) {
display->mDisplay = displayData.mDisplay.GetIntValue();
}
else if (eCSSUnit_None == displayData.mDisplay.GetUnit()) {
display->mDisplay = NS_STYLE_DISPLAY_NONE;
}
else if (eCSSUnit_Inherit == displayData.mDisplay.GetUnit()) {
inherited = PR_TRUE;
display->mDisplay = parentDisplay->mDisplay;
}
// appearance: enum, none, inherit
if (eCSSUnit_Enumerated == displayData.mAppearance.GetUnit()) {
display->mAppearance = displayData.mAppearance.GetIntValue();
}
else if (eCSSUnit_None == displayData.mAppearance.GetUnit()) {
display->mAppearance = NS_THEME_NONE;
}
else if (eCSSUnit_Inherit == displayData.mAppearance.GetUnit()) {
inherited = PR_TRUE;
display->mAppearance = parentDisplay->mAppearance;
}
// binding: url, none, inherit
if (eCSSUnit_URL == displayData.mBinding.GetUnit()) {
displayData.mBinding.GetStringValue(display->mBinding);
}
else if (eCSSUnit_None == displayData.mBinding.GetUnit()) {
display->mBinding.Truncate();
}
else if (eCSSUnit_Inherit == displayData.mBinding.GetUnit()) {
inherited = PR_TRUE;
display->mBinding = parentDisplay->mBinding;
}
// position: enum, inherit
if (eCSSUnit_Enumerated == displayData.mPosition.GetUnit()) {
display->mPosition = displayData.mPosition.GetIntValue();
if (display->mPosition != NS_STYLE_POSITION_NORMAL) {
// :before and :after elts cannot be positioned. We need to check for this
// case.
nsCOMPtr<nsIAtom> tag;
aContext->GetPseudoType(*getter_AddRefs(tag));
if (tag && tag.get() == nsCSSAtoms::beforePseudo || tag.get() == nsCSSAtoms::afterPseudo)
display->mPosition = NS_STYLE_POSITION_NORMAL;
}
}
else if (eCSSUnit_Inherit == displayData.mPosition.GetUnit()) {
inherited = PR_TRUE;
display->mPosition = parentDisplay->mPosition;
}
// clear: enum, none, inherit
if (eCSSUnit_Enumerated == displayData.mClear.GetUnit()) {
display->mBreakType = displayData.mClear.GetIntValue();
}
else if (eCSSUnit_None == displayData.mClear.GetUnit()) {
display->mBreakType = NS_STYLE_CLEAR_NONE;
}
else if (eCSSUnit_Inherit == displayData.mClear.GetUnit()) {
inherited = PR_TRUE;
display->mBreakType = parentDisplay->mBreakType;
}
// temp fix for bug 24000
if (eCSSUnit_Enumerated == displayData.mBreakBefore.GetUnit()) {
display->mBreakBefore = (NS_STYLE_PAGE_BREAK_ALWAYS == displayData.mBreakBefore.GetIntValue());
}
if (eCSSUnit_Enumerated == displayData.mBreakAfter.GetUnit()) {
display->mBreakAfter = (NS_STYLE_PAGE_BREAK_ALWAYS == displayData.mBreakAfter.GetIntValue());
}
// end temp fix
// float: enum, none, inherit
if (eCSSUnit_Enumerated == displayData.mFloat.GetUnit()) {
display->mFloats = displayData.mFloat.GetIntValue();
}
else if (eCSSUnit_None == displayData.mFloat.GetUnit()) {
display->mFloats = NS_STYLE_FLOAT_NONE;
}
else if (eCSSUnit_Inherit == displayData.mFloat.GetUnit()) {
inherited = PR_TRUE;
display->mFloats = parentDisplay->mFloats;
}
// overflow: enum, auto, inherit
if (eCSSUnit_Enumerated == displayData.mOverflow.GetUnit()) {
display->mOverflow = displayData.mOverflow.GetIntValue();
}
else if (eCSSUnit_Auto == displayData.mOverflow.GetUnit()) {
display->mOverflow = NS_STYLE_OVERFLOW_AUTO;
}
else if (eCSSUnit_Inherit == displayData.mOverflow.GetUnit()) {
inherited = PR_TRUE;
display->mOverflow = parentDisplay->mOverflow;
}
// clip property: length, auto, inherit
if (nsnull != displayData.mClip) {
if (eCSSUnit_Inherit == displayData.mClip->mTop.GetUnit()) { // if one is inherit, they all are
inherited = PR_TRUE;
display->mClipFlags = parentDisplay->mClipFlags;
display->mClip = parentDisplay->mClip;
}
else {
PRBool fullAuto = PR_TRUE;
display->mClipFlags = 0; // clear it
if (eCSSUnit_Auto == displayData.mClip->mTop.GetUnit()) {
display->mClip.y = 0;
display->mClipFlags |= NS_STYLE_CLIP_TOP_AUTO;
}
else if (displayData.mClip->mTop.IsLengthUnit()) {
display->mClip.y = CalcLength(displayData.mClip->mTop, nsnull, aContext, mPresContext, inherited);
fullAuto = PR_FALSE;
}
if (eCSSUnit_Auto == displayData.mClip->mBottom.GetUnit()) {
display->mClip.height = 0;
display->mClipFlags |= NS_STYLE_CLIP_BOTTOM_AUTO;
}
else if (displayData.mClip->mBottom.IsLengthUnit()) {
display->mClip.height = CalcLength(displayData.mClip->mBottom, nsnull, aContext, mPresContext, inherited) -
display->mClip.y;
fullAuto = PR_FALSE;
}
if (eCSSUnit_Auto == displayData.mClip->mLeft.GetUnit()) {
display->mClip.x = 0;
display->mClipFlags |= NS_STYLE_CLIP_LEFT_AUTO;
}
else if (displayData.mClip->mLeft.IsLengthUnit()) {
display->mClip.x = CalcLength(displayData.mClip->mLeft, nsnull, aContext, mPresContext, inherited);
fullAuto = PR_FALSE;
}
if (eCSSUnit_Auto == displayData.mClip->mRight.GetUnit()) {
display->mClip.width = 0;
display->mClipFlags |= NS_STYLE_CLIP_RIGHT_AUTO;
}
else if (displayData.mClip->mRight.IsLengthUnit()) {
display->mClip.width = CalcLength(displayData.mClip->mRight, nsnull, aContext, mPresContext, inherited) -
display->mClip.x;
fullAuto = PR_FALSE;
}
display->mClipFlags &= ~NS_STYLE_CLIP_TYPE_MASK;
if (fullAuto) {
display->mClipFlags |= NS_STYLE_CLIP_AUTO;
}
else {
display->mClipFlags |= NS_STYLE_CLIP_RECT;
}
}
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Display, display);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mDisplayData = display;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Display), aHighestNode);
}
// CSS2 specified fixups:
// 1) if float is not none, and display is not none, then we must set display to block
// XXX - there are problems with following the spec here: what we will do instead of
// following the letter of the spec is to make sure that floated elements are
// some kind of block, not strictly 'block' - see EnsureBlockDisplay method
if (display->mDisplay != NS_STYLE_DISPLAY_NONE &&
display->mFloats != NS_STYLE_FLOAT_NONE )
EnsureBlockDisplay(display->mDisplay);
// 2) if position is 'absolute' or 'fixed' then display must be 'block and float must be 'none'
// XXX - see note for fixup 1) above...
if (display->IsAbsolutelyPositioned() && display->mDisplay != NS_STYLE_DISPLAY_NONE) {
EnsureBlockDisplay(display->mDisplay);
display->mFloats = NS_STYLE_FLOAT_NONE;
}
nsCOMPtr<nsIAtom> tag;
aContext->GetPseudoType(*getter_AddRefs(tag));
if (tag && tag.get() == nsCSSAtoms::beforePseudo || tag.get() == nsCSSAtoms::afterPseudo) {
PRUint8 displayValue = display->mDisplay;
if (parentDisplay->IsBlockLevel()) {
// For block-level elements the only allowed 'display' values are:
// 'none', 'inline', 'block', and 'marker'
if ((NS_STYLE_DISPLAY_INLINE != displayValue) &&
(NS_STYLE_DISPLAY_BLOCK != displayValue) &&
(NS_STYLE_DISPLAY_MARKER != displayValue)) {
// Pseudo-element behaves as if the value were 'block'
displayValue = NS_STYLE_DISPLAY_BLOCK;
}
} else {
// For inline-level elements the only allowed 'display' values are
// 'none' and 'inline'
displayValue = NS_STYLE_DISPLAY_INLINE;
}
if (display->mDisplay != displayValue) {
// Reset the value
display->mDisplay = displayValue;
}
}
return display;
}
const nsStyleStruct*
nsRuleNode::ComputeVisibilityData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSDisplay& displayData = NS_STATIC_CAST(const nsCSSDisplay&, aData);
nsStyleVisibility* visibility = nsnull;
const nsStyleVisibility* parentVisibility = nsnull;
PRBool inherited = aInherited;
if (parentContext && aRuleDetail != eRuleFullReset)
parentVisibility = NS_STATIC_CAST(const nsStyleVisibility*,
parentContext->GetStyleData(eStyleStruct_Visibility));
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
visibility = new (mPresContext) nsStyleVisibility(*NS_STATIC_CAST(nsStyleVisibility*, aStartStruct));
else {
// XXXldb What about eRuleFullInherited? Which path is faster?
if (aRuleDetail != eRuleFullMixed && aRuleDetail != eRuleFullReset) {
// No question. We will have to inherit. Go ahead and init
// with inherited vals from parent.
inherited = PR_TRUE;
if (parentVisibility)
visibility = new (mPresContext) nsStyleVisibility(*parentVisibility);
}
}
if (!visibility)
visibility = new (mPresContext) nsStyleVisibility(mPresContext);
if (!parentVisibility)
parentVisibility = visibility;
// opacity: factor, percent, inherit
if (eCSSUnit_Percent == displayData.mOpacity.GetUnit()) {
inherited = PR_TRUE;
float opacity = parentVisibility->mOpacity * displayData.mOpacity.GetPercentValue();
if (opacity < 0.0f) {
visibility->mOpacity = 0.0f;
} else if (1.0 < opacity) {
visibility->mOpacity = 1.0f;
}
else {
visibility->mOpacity = opacity;
}
}
else if (eCSSUnit_Number == displayData.mOpacity.GetUnit()) {
visibility->mOpacity = displayData.mOpacity.GetFloatValue();
}
else if (eCSSUnit_Inherit == displayData.mOpacity.GetUnit()) {
inherited = PR_TRUE;
visibility->mOpacity = parentVisibility->mOpacity;
}
// direction: enum, inherit
if (eCSSUnit_Enumerated == displayData.mDirection.GetUnit()) {
visibility->mDirection = displayData.mDirection.GetIntValue();
#ifdef IBMBIDI
if (NS_STYLE_DIRECTION_RTL == visibility->mDirection)
mPresContext->SetBidiEnabled(PR_TRUE);
#endif // IBMBIDI
}
else if (eCSSUnit_Inherit == displayData.mDirection.GetUnit()) {
inherited = PR_TRUE;
visibility->mDirection = parentVisibility->mDirection;
}
// visibility: enum, inherit
if (eCSSUnit_Enumerated == displayData.mVisibility.GetUnit()) {
visibility->mVisible = displayData.mVisibility.GetIntValue();
}
else if (eCSSUnit_Inherit == displayData.mVisibility.GetUnit()) {
inherited = PR_TRUE;
visibility->mVisible = parentVisibility->mVisible;
}
// lang: string, inherit
// this is not a real CSS property, it is a html attribute mapped to CSS struture
if (eCSSUnit_String == displayData.mLang.GetUnit()) {
if (!gLangService) {
CallGetService(NS_LANGUAGEATOMSERVICE_CONTRACTID, &gLangService);
}
if (gLangService) {
nsAutoString lang;
displayData.mLang.GetStringValue(lang);
gLangService->LookupLanguage(lang.get(),
getter_AddRefs(visibility->mLanguage));
}
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Visibility, visibility);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mInheritedData)
aHighestNode->mStyleData.mInheritedData = new (mPresContext) nsInheritedStyleData;
aHighestNode->mStyleData.mInheritedData->mVisibilityData = visibility;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Visibility), aHighestNode);
}
return visibility;
}
const nsStyleStruct*
nsRuleNode::ComputeColorData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSColor& colorData = NS_STATIC_CAST(const nsCSSColor&, aData);
nsStyleColor* color = nsnull;
const nsStyleColor* parentColor = nsnull;
PRBool inherited = aInherited;
if (parentContext && aRuleDetail != eRuleFullReset)
parentColor = NS_STATIC_CAST(const nsStyleColor*,
parentContext->GetStyleData(eStyleStruct_Color));
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
color = new (mPresContext) nsStyleColor(*NS_STATIC_CAST(nsStyleColor*, aStartStruct));
else {
// XXXldb What about eRuleFullInherited? Which path is faster?
if (aRuleDetail != eRuleFullMixed && aRuleDetail != eRuleFullReset) {
// No question. We will have to inherit. Go ahead and init
// with inherited vals from parent.
inherited = PR_TRUE;
if (parentColor)
color = new (mPresContext) nsStyleColor(*parentColor);
}
}
if (!color)
color = new (mPresContext) nsStyleColor(mPresContext);
if (!parentColor)
parentColor = color;
// color: color, string, inherit
SetColor(colorData.mColor, parentColor->mColor, mPresContext, color->mColor,
inherited);
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Color, color);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mInheritedData)
aHighestNode->mStyleData.mInheritedData = new (mPresContext) nsInheritedStyleData;
aHighestNode->mStyleData.mInheritedData->mColorData = color;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Color), aHighestNode);
}
return color;
}
const nsStyleStruct*
nsRuleNode::ComputeBackgroundData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSColor& colorData = NS_STATIC_CAST(const nsCSSColor&, aData);
nsStyleBackground* bg;
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
bg = new (mPresContext) nsStyleBackground(*NS_STATIC_CAST(nsStyleBackground*, aStartStruct));
else
bg = new (mPresContext) nsStyleBackground(mPresContext);
const nsStyleBackground* parentBG = bg;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentBG = NS_STATIC_CAST(const nsStyleBackground*,
parentContext->GetStyleData(eStyleStruct_Background));
PRBool inherited = aInherited;
// save parentFlags in case bg == parentBG and we clobber them later
PRUint8 parentFlags = parentBG->mBackgroundFlags;
// background-color: color, string, enum (flags), inherit
if (eCSSUnit_Inherit == colorData.mBackColor.GetUnit()) { // do inherit first, so SetColor doesn't do it
bg->mBackgroundColor = parentBG->mBackgroundColor;
bg->mBackgroundFlags &= ~NS_STYLE_BG_COLOR_TRANSPARENT;
bg->mBackgroundFlags |= (parentFlags & NS_STYLE_BG_COLOR_TRANSPARENT);
inherited = PR_TRUE;
}
else if (SetColor(colorData.mBackColor, parentBG->mBackgroundColor,
mPresContext, bg->mBackgroundColor, inherited)) {
bg->mBackgroundFlags &= ~NS_STYLE_BG_COLOR_TRANSPARENT;
}
else if (eCSSUnit_Enumerated == colorData.mBackColor.GetUnit()) {
//bg->mBackgroundColor = parentBG->mBackgroundColor; XXXwdh crap crap crap!
bg->mBackgroundFlags |= NS_STYLE_BG_COLOR_TRANSPARENT;
}
// background-image: url, none, inherit
if (eCSSUnit_URL == colorData.mBackImage.GetUnit()) {
colorData.mBackImage.GetStringValue(bg->mBackgroundImage);
bg->mBackgroundFlags &= ~NS_STYLE_BG_IMAGE_NONE;
}
else if (eCSSUnit_None == colorData.mBackImage.GetUnit()) {
bg->mBackgroundImage.Truncate();
bg->mBackgroundFlags |= NS_STYLE_BG_IMAGE_NONE;
}
else if (eCSSUnit_Inherit == colorData.mBackImage.GetUnit()) {
inherited = PR_TRUE;
bg->mBackgroundImage = parentBG->mBackgroundImage;
bg->mBackgroundFlags &= ~NS_STYLE_BG_IMAGE_NONE;
bg->mBackgroundFlags |= (parentFlags & NS_STYLE_BG_IMAGE_NONE);
}
// background-repeat: enum, inherit
if (eCSSUnit_Enumerated == colorData.mBackRepeat.GetUnit()) {
bg->mBackgroundRepeat = colorData.mBackRepeat.GetIntValue();
}
else if (eCSSUnit_Inherit == colorData.mBackRepeat.GetUnit()) {
inherited = PR_TRUE;
bg->mBackgroundRepeat = parentBG->mBackgroundRepeat;
}
// background-attachment: enum, inherit
if (eCSSUnit_Enumerated == colorData.mBackAttachment.GetUnit()) {
bg->mBackgroundAttachment = colorData.mBackAttachment.GetIntValue();
}
else if (eCSSUnit_Inherit == colorData.mBackAttachment.GetUnit()) {
inherited = PR_TRUE;
bg->mBackgroundAttachment = parentBG->mBackgroundAttachment;
}
// background-position: enum, length, percent (flags), inherit
if (eCSSUnit_Percent == colorData.mBackPositionX.GetUnit()) {
bg->mBackgroundXPosition = (nscoord)(100.0f * colorData.mBackPositionX.GetPercentValue());
bg->mBackgroundFlags |= NS_STYLE_BG_X_POSITION_PERCENT;
bg->mBackgroundFlags &= ~NS_STYLE_BG_X_POSITION_LENGTH;
}
else if (colorData.mBackPositionX.IsLengthUnit()) {
bg->mBackgroundXPosition = CalcLength(colorData.mBackPositionX, nsnull,
aContext, mPresContext, inherited);
bg->mBackgroundFlags |= NS_STYLE_BG_X_POSITION_LENGTH;
bg->mBackgroundFlags &= ~NS_STYLE_BG_X_POSITION_PERCENT;
}
else if (eCSSUnit_Enumerated == colorData.mBackPositionX.GetUnit()) {
bg->mBackgroundXPosition = (nscoord)colorData.mBackPositionX.GetIntValue();
bg->mBackgroundFlags |= NS_STYLE_BG_X_POSITION_PERCENT;
bg->mBackgroundFlags &= ~NS_STYLE_BG_X_POSITION_LENGTH;
}
else if (eCSSUnit_Inherit == colorData.mBackPositionX.GetUnit()) {
inherited = PR_TRUE;
bg->mBackgroundXPosition = parentBG->mBackgroundXPosition;
bg->mBackgroundFlags &= ~(NS_STYLE_BG_X_POSITION_LENGTH | NS_STYLE_BG_X_POSITION_PERCENT);
bg->mBackgroundFlags |= (parentFlags & (NS_STYLE_BG_X_POSITION_LENGTH | NS_STYLE_BG_X_POSITION_PERCENT));
}
if (eCSSUnit_Percent == colorData.mBackPositionY.GetUnit()) {
bg->mBackgroundYPosition = (nscoord)(100.0f * colorData.mBackPositionY.GetPercentValue());
bg->mBackgroundFlags |= NS_STYLE_BG_Y_POSITION_PERCENT;
bg->mBackgroundFlags &= ~NS_STYLE_BG_Y_POSITION_LENGTH;
}
else if (colorData.mBackPositionY.IsLengthUnit()) {
bg->mBackgroundYPosition = CalcLength(colorData.mBackPositionY, nsnull,
aContext, mPresContext, inherited);
bg->mBackgroundFlags |= NS_STYLE_BG_Y_POSITION_LENGTH;
bg->mBackgroundFlags &= ~NS_STYLE_BG_Y_POSITION_PERCENT;
}
else if (eCSSUnit_Enumerated == colorData.mBackPositionY.GetUnit()) {
bg->mBackgroundYPosition = (nscoord)colorData.mBackPositionY.GetIntValue();
bg->mBackgroundFlags |= NS_STYLE_BG_Y_POSITION_PERCENT;
bg->mBackgroundFlags &= ~NS_STYLE_BG_Y_POSITION_LENGTH;
}
else if (eCSSUnit_Inherit == colorData.mBackPositionY.GetUnit()) {
inherited = PR_TRUE;
bg->mBackgroundYPosition = parentBG->mBackgroundYPosition;
bg->mBackgroundFlags &= ~(NS_STYLE_BG_Y_POSITION_LENGTH | NS_STYLE_BG_Y_POSITION_PERCENT);
bg->mBackgroundFlags |= (parentFlags & (NS_STYLE_BG_Y_POSITION_LENGTH | NS_STYLE_BG_Y_POSITION_PERCENT));
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Background, bg);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mBackgroundData = bg;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Background), aHighestNode);
}
return bg;
}
const nsStyleStruct*
nsRuleNode::ComputeMarginData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSMargin& marginData = NS_STATIC_CAST(const nsCSSMargin&, aData);
nsStyleMargin* margin;
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
margin = new (mPresContext) nsStyleMargin(*NS_STATIC_CAST(nsStyleMargin*, aStartStruct));
else
margin = new (mPresContext) nsStyleMargin();
const nsStyleMargin* parentMargin = margin;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentMargin = NS_STATIC_CAST(const nsStyleMargin*,
parentContext->GetStyleData(eStyleStruct_Margin));
PRBool inherited = aInherited;
// margin: length, percent, auto, inherit
if (marginData.mMargin) {
nsStyleCoord coord;
nsStyleCoord parentCoord;
parentMargin->mMargin.GetLeft(parentCoord);
if (SetCoord(marginData.mMargin->mLeft, coord, parentCoord, SETCOORD_LPAH, aContext, mPresContext, inherited)) {
margin->mMargin.SetLeft(coord);
}
parentMargin->mMargin.GetTop(parentCoord);
if (SetCoord(marginData.mMargin->mTop, coord, parentCoord, SETCOORD_LPAH, aContext, mPresContext, inherited)) {
margin->mMargin.SetTop(coord);
}
parentMargin->mMargin.GetRight(parentCoord);
if (SetCoord(marginData.mMargin->mRight, coord, parentCoord, SETCOORD_LPAH, aContext, mPresContext, inherited)) {
margin->mMargin.SetRight(coord);
}
parentMargin->mMargin.GetBottom(parentCoord);
if (SetCoord(marginData.mMargin->mBottom, coord, parentCoord, SETCOORD_LPAH, aContext, mPresContext, inherited)) {
margin->mMargin.SetBottom(coord);
}
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Margin, margin);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mMarginData = margin;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Margin), aHighestNode);
}
margin->RecalcData();
return margin;
}
const nsStyleStruct*
nsRuleNode::ComputeBorderData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSMargin& marginData = NS_STATIC_CAST(const nsCSSMargin&, aData);
nsStyleBorder* border;
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
border = new (mPresContext) nsStyleBorder(*NS_STATIC_CAST(nsStyleBorder*, aStartStruct));
else
border = new (mPresContext) nsStyleBorder(mPresContext);
const nsStyleBorder* parentBorder = border;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentBorder = NS_STATIC_CAST(const nsStyleBorder*,
parentContext->GetStyleData(eStyleStruct_Border));
PRBool inherited = aInherited;
// border-size: length, enum, inherit
if (marginData.mBorderWidth) {
nsStyleCoord coord;
nsStyleCoord parentCoord;
if (SetCoord(marginData.mBorderWidth->mLeft, coord, parentCoord, SETCOORD_LE, aContext, mPresContext, inherited))
border->mBorder.SetLeft(coord);
else if (eCSSUnit_Inherit == marginData.mBorderWidth->mLeft.GetUnit()) {
inherited = PR_TRUE;
border->mBorder.SetLeft(parentBorder->mBorder.GetLeft(coord));
}
if (SetCoord(marginData.mBorderWidth->mTop, coord, parentCoord, SETCOORD_LE, aContext, mPresContext, inherited))
border->mBorder.SetTop(coord);
else if (eCSSUnit_Inherit == marginData.mBorderWidth->mTop.GetUnit()) {
inherited = PR_TRUE;
border->mBorder.SetTop(parentBorder->mBorder.GetTop(coord));
}
if (SetCoord(marginData.mBorderWidth->mRight, coord, parentCoord, SETCOORD_LE, aContext, mPresContext, inherited))
border->mBorder.SetRight(coord);
else if (eCSSUnit_Inherit == marginData.mBorderWidth->mRight.GetUnit()) {
inherited = PR_TRUE;
border->mBorder.SetRight(parentBorder->mBorder.GetRight(coord));
}
if (SetCoord(marginData.mBorderWidth->mBottom, coord, parentCoord, SETCOORD_LE, aContext, mPresContext, inherited))
border->mBorder.SetBottom(coord);
else if (eCSSUnit_Inherit == marginData.mBorderWidth->mBottom.GetUnit()) {
inherited = PR_TRUE;
border->mBorder.SetBottom(parentBorder->mBorder.GetBottom(coord));
}
}
// border-style: enum, none, inhert
if (nsnull != marginData.mBorderStyle) {
nsCSSRect* ourStyle = marginData.mBorderStyle;
if (eCSSUnit_Enumerated == ourStyle->mTop.GetUnit()) {
border->SetBorderStyle(NS_SIDE_TOP, ourStyle->mTop.GetIntValue());
}
else if (eCSSUnit_None == ourStyle->mTop.GetUnit()) {
border->SetBorderStyle(NS_SIDE_TOP, NS_STYLE_BORDER_STYLE_NONE);
}
else if (eCSSUnit_Inherit == ourStyle->mTop.GetUnit()) {
inherited = PR_TRUE;
border->SetBorderStyle(NS_SIDE_TOP, parentBorder->GetBorderStyle(NS_SIDE_TOP));
}
if (eCSSUnit_Enumerated == ourStyle->mRight.GetUnit()) {
border->SetBorderStyle(NS_SIDE_RIGHT, ourStyle->mRight.GetIntValue());
}
else if (eCSSUnit_None == ourStyle->mRight.GetUnit()) {
border->SetBorderStyle(NS_SIDE_RIGHT, NS_STYLE_BORDER_STYLE_NONE);
}
else if (eCSSUnit_Inherit == ourStyle->mRight.GetUnit()) {
inherited = PR_TRUE;
border->SetBorderStyle(NS_SIDE_RIGHT, parentBorder->GetBorderStyle(NS_SIDE_RIGHT));
}
if (eCSSUnit_Enumerated == ourStyle->mBottom.GetUnit()) {
border->SetBorderStyle(NS_SIDE_BOTTOM, ourStyle->mBottom.GetIntValue());
}
else if (eCSSUnit_None == ourStyle->mBottom.GetUnit()) {
border->SetBorderStyle(NS_SIDE_BOTTOM, NS_STYLE_BORDER_STYLE_NONE);
}
else if (eCSSUnit_Inherit == ourStyle->mBottom.GetUnit()) {
inherited = PR_TRUE;
border->SetBorderStyle(NS_SIDE_BOTTOM, parentBorder->GetBorderStyle(NS_SIDE_BOTTOM));
}
if (eCSSUnit_Enumerated == ourStyle->mLeft.GetUnit()) {
border->SetBorderStyle(NS_SIDE_LEFT, ourStyle->mLeft.GetIntValue());
}
else if (eCSSUnit_None == ourStyle->mLeft.GetUnit()) {
border->SetBorderStyle(NS_SIDE_LEFT, NS_STYLE_BORDER_STYLE_NONE);
}
else if (eCSSUnit_Inherit == ourStyle->mLeft.GetUnit()) {
inherited = PR_TRUE;
border->SetBorderStyle(NS_SIDE_LEFT, parentBorder->GetBorderStyle(NS_SIDE_LEFT));
}
}
// border-colors: color, string, enum
if (marginData.mBorderColors) {
nscolor borderColor;
nscolor unused = NS_RGB(0,0,0);
for (PRInt32 i = 0; i < 4; i++) {
if (marginData.mBorderColors[i]) {
// Some composite border color information has been specified for this
// border side.
border->EnsureBorderColors();
border->ClearBorderColors(i);
nsCSSValueList* list = marginData.mBorderColors[i];
while (list) {
if (SetColor(list->mValue, unused, mPresContext, borderColor, inherited))
border->AppendBorderColor(i, borderColor, PR_FALSE);
else if (eCSSUnit_Enumerated == list->mValue.GetUnit() &&
NS_STYLE_COLOR_TRANSPARENT == list->mValue.GetIntValue())
border->AppendBorderColor(i, nsnull, PR_TRUE);
list = list->mNext;
}
}
}
}
// border-color: color, string, enum, inherit
if (nsnull != marginData.mBorderColor) {
nsCSSRect* ourBorderColor = marginData.mBorderColor;
nscolor borderColor;
nscolor unused = NS_RGB(0,0,0);
PRBool transparent;
PRBool foreground;
// top
if (eCSSUnit_Inherit == ourBorderColor->mTop.GetUnit()) {
inherited = PR_TRUE;
parentBorder->GetBorderColor(NS_SIDE_TOP, borderColor, transparent, foreground);
if (transparent)
border->SetBorderTransparent(NS_SIDE_TOP);
else if (foreground)
border->SetBorderToForeground(NS_SIDE_TOP);
else
border->SetBorderColor(NS_SIDE_TOP, borderColor);
}
else if (SetColor(ourBorderColor->mTop, unused, mPresContext, borderColor, inherited)) {
border->SetBorderColor(NS_SIDE_TOP, borderColor);
}
else if (eCSSUnit_Enumerated == ourBorderColor->mTop.GetUnit()) {
switch (ourBorderColor->mTop.GetIntValue()) {
case NS_STYLE_COLOR_TRANSPARENT:
border->SetBorderTransparent(NS_SIDE_TOP);
break;
case NS_STYLE_COLOR_MOZ_USE_TEXT_COLOR:
border->SetBorderToForeground(NS_SIDE_TOP);
break;
}
}
// right
if (eCSSUnit_Inherit == ourBorderColor->mRight.GetUnit()) {
inherited = PR_TRUE;
parentBorder->GetBorderColor(NS_SIDE_RIGHT, borderColor, transparent, foreground);
if (transparent)
border->SetBorderTransparent(NS_SIDE_RIGHT);
else if (foreground)
border->SetBorderToForeground(NS_SIDE_RIGHT);
else
border->SetBorderColor(NS_SIDE_RIGHT, borderColor);
}
else if (SetColor(ourBorderColor->mRight, unused, mPresContext, borderColor, inherited)) {
border->SetBorderColor(NS_SIDE_RIGHT, borderColor);
}
else if (eCSSUnit_Enumerated == ourBorderColor->mRight.GetUnit()) {
switch (ourBorderColor->mRight.GetIntValue()) {
case NS_STYLE_COLOR_TRANSPARENT:
border->SetBorderTransparent(NS_SIDE_RIGHT);
break;
case NS_STYLE_COLOR_MOZ_USE_TEXT_COLOR:
border->SetBorderToForeground(NS_SIDE_RIGHT);
break;
}
}
// bottom
if (eCSSUnit_Inherit == ourBorderColor->mBottom.GetUnit()) {
inherited = PR_TRUE;
parentBorder->GetBorderColor(NS_SIDE_BOTTOM, borderColor, transparent, foreground);
if (transparent)
border->SetBorderTransparent(NS_SIDE_BOTTOM);
else if (foreground)
border->SetBorderToForeground(NS_SIDE_BOTTOM);
else
border->SetBorderColor(NS_SIDE_BOTTOM, borderColor);
}
else if (SetColor(ourBorderColor->mBottom, unused, mPresContext, borderColor, inherited)) {
border->SetBorderColor(NS_SIDE_BOTTOM, borderColor);
}
else if (eCSSUnit_Enumerated == ourBorderColor->mBottom.GetUnit()) {
switch (ourBorderColor->mBottom.GetIntValue()) {
case NS_STYLE_COLOR_TRANSPARENT:
border->SetBorderTransparent(NS_SIDE_BOTTOM);
break;
case NS_STYLE_COLOR_MOZ_USE_TEXT_COLOR:
border->SetBorderToForeground(NS_SIDE_BOTTOM);
break;
}
}
// left
if (eCSSUnit_Inherit == ourBorderColor->mLeft.GetUnit()) {
inherited = PR_TRUE;
parentBorder->GetBorderColor(NS_SIDE_LEFT, borderColor, transparent, foreground);
if (transparent)
border->SetBorderTransparent(NS_SIDE_LEFT);
else if (foreground)
border->SetBorderToForeground(NS_SIDE_LEFT);
else
border->SetBorderColor(NS_SIDE_LEFT, borderColor);
}
else if (SetColor(ourBorderColor->mLeft, unused, mPresContext, borderColor, inherited)) {
border->SetBorderColor(NS_SIDE_LEFT, borderColor);
}
else if (eCSSUnit_Enumerated == ourBorderColor->mLeft.GetUnit()) {
switch (ourBorderColor->mLeft.GetIntValue()) {
case NS_STYLE_COLOR_TRANSPARENT:
border->SetBorderTransparent(NS_SIDE_LEFT);
break;
case NS_STYLE_COLOR_MOZ_USE_TEXT_COLOR:
border->SetBorderToForeground(NS_SIDE_LEFT);
break;
}
}
}
// -moz-border-radius: length, percent, inherit
if (marginData.mBorderRadius) {
nsStyleCoord coord;
nsStyleCoord parentCoord;
parentBorder->mBorderRadius.GetLeft(parentCoord);
if (SetCoord(marginData.mBorderRadius->mLeft, coord, parentCoord, SETCOORD_LPH, aContext, mPresContext, inherited))
border->mBorderRadius.SetLeft(coord);
parentBorder->mBorderRadius.GetTop(parentCoord);
if (SetCoord(marginData.mBorderRadius->mTop, coord, parentCoord, SETCOORD_LPH, aContext, mPresContext, inherited))
border->mBorderRadius.SetTop(coord);
parentBorder->mBorderRadius.GetRight(parentCoord);
if (SetCoord(marginData.mBorderRadius->mRight, coord, parentCoord, SETCOORD_LPH, aContext, mPresContext, inherited))
border->mBorderRadius.SetRight(coord);
parentBorder->mBorderRadius.GetBottom(parentCoord);
if (SetCoord(marginData.mBorderRadius->mBottom, coord, parentCoord, SETCOORD_LPH, aContext, mPresContext, inherited))
border->mBorderRadius.SetBottom(coord);
}
// float-edge: enum, inherit
if (eCSSUnit_Enumerated == marginData.mFloatEdge.GetUnit())
border->mFloatEdge = marginData.mFloatEdge.GetIntValue();
else if (eCSSUnit_Inherit == marginData.mFloatEdge.GetUnit()) {
inherited = PR_TRUE;
border->mFloatEdge = parentBorder->mFloatEdge;
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Border, border);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mBorderData = border;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Border), aHighestNode);
}
border->RecalcData();
return border;
}
const nsStyleStruct*
nsRuleNode::ComputePaddingData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSMargin& marginData = NS_STATIC_CAST(const nsCSSMargin&, aData);
nsStylePadding* padding;
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
padding = new (mPresContext) nsStylePadding(*NS_STATIC_CAST(nsStylePadding*, aStartStruct));
else
padding = new (mPresContext) nsStylePadding();
const nsStylePadding* parentPadding = padding;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentPadding = NS_STATIC_CAST(const nsStylePadding*,
parentContext->GetStyleData(eStyleStruct_Padding));
PRBool inherited = aInherited;
// padding: length, percent, inherit
if (marginData.mPadding) {
nsStyleCoord coord;
nsStyleCoord parentCoord;
parentPadding->mPadding.GetLeft(parentCoord);
if (SetCoord(marginData.mPadding->mLeft, coord, parentCoord, SETCOORD_LPH, aContext, mPresContext, inherited)) {
padding->mPadding.SetLeft(coord);
}
parentPadding->mPadding.GetTop(parentCoord);
if (SetCoord(marginData.mPadding->mTop, coord, parentCoord, SETCOORD_LPH, aContext, mPresContext, inherited)) {
padding->mPadding.SetTop(coord);
}
parentPadding->mPadding.GetRight(parentCoord);
if (SetCoord(marginData.mPadding->mRight, coord, parentCoord, SETCOORD_LPH, aContext, mPresContext, inherited)) {
padding->mPadding.SetRight(coord);
}
parentPadding->mPadding.GetBottom(parentCoord);
if (SetCoord(marginData.mPadding->mBottom, coord, parentCoord, SETCOORD_LPH, aContext, mPresContext, inherited)) {
padding->mPadding.SetBottom(coord);
}
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Padding, padding);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mPaddingData = padding;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Padding), aHighestNode);
}
padding->RecalcData();
return padding;
}
const nsStyleStruct*
nsRuleNode::ComputeOutlineData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSMargin& marginData = NS_STATIC_CAST(const nsCSSMargin&, aData);
nsStyleOutline* outline;
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
outline = new (mPresContext) nsStyleOutline(*NS_STATIC_CAST(nsStyleOutline*, aStartStruct));
else
outline = new (mPresContext) nsStyleOutline(mPresContext);
const nsStyleOutline* parentOutline = outline;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentOutline = NS_STATIC_CAST(const nsStyleOutline*,
parentContext->GetStyleData(eStyleStruct_Outline));
PRBool inherited = aInherited;
// outline-width: length, enum, inherit
SetCoord(marginData.mOutlineWidth, outline->mOutlineWidth, parentOutline->mOutlineWidth,
SETCOORD_LEH, aContext, mPresContext, inherited);
// outline-color: color, string, enum, inherit
nscolor outlineColor;
nscolor unused = NS_RGB(0,0,0);
if (eCSSUnit_Inherit == marginData.mOutlineColor.GetUnit()) {
inherited = PR_TRUE;
if (parentOutline->GetOutlineColor(outlineColor))
outline->SetOutlineColor(outlineColor);
else
outline->SetOutlineInvert();
}
else if (SetColor(marginData.mOutlineColor, unused, mPresContext, outlineColor, inherited))
outline->SetOutlineColor(outlineColor);
else if (eCSSUnit_Enumerated == marginData.mOutlineColor.GetUnit())
outline->SetOutlineInvert();
// outline-style: enum, none, inherit
if (eCSSUnit_Enumerated == marginData.mOutlineStyle.GetUnit())
outline->SetOutlineStyle(marginData.mOutlineStyle.GetIntValue());
else if (eCSSUnit_None == marginData.mOutlineStyle.GetUnit())
outline->SetOutlineStyle(NS_STYLE_BORDER_STYLE_NONE);
else if (eCSSUnit_Inherit == marginData.mOutlineStyle.GetUnit()) {
inherited = PR_TRUE;
outline->SetOutlineStyle(parentOutline->GetOutlineStyle());
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Outline, outline);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mOutlineData = outline;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Outline), aHighestNode);
}
outline->RecalcData();
return outline;
}
const nsStyleStruct*
nsRuleNode::ComputeListData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSList& listData = NS_STATIC_CAST(const nsCSSList&, aData);
nsStyleList* list = nsnull;
const nsStyleList* parentList = nsnull;
PRBool inherited = aInherited;
if (parentContext && aRuleDetail != eRuleFullReset)
parentList = NS_STATIC_CAST(const nsStyleList*,
parentContext->GetStyleData(eStyleStruct_List));
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
list = new (mPresContext) nsStyleList(*NS_STATIC_CAST(nsStyleList*, aStartStruct));
else {
// XXXldb What about eRuleFullInherited? Which path is faster?
if (aRuleDetail != eRuleFullMixed && aRuleDetail != eRuleFullReset) {
// No question. We will have to inherit. Go ahead and init
// with inherited vals from parent.
inherited = PR_TRUE;
if (parentList)
list = new (mPresContext) nsStyleList(*parentList);
}
}
if (!list)
list = new (mPresContext) nsStyleList();
if (!parentList)
parentList = list;
// list-style-type: enum, none, inherit
if (eCSSUnit_Enumerated == listData.mType.GetUnit()) {
list->mListStyleType = listData.mType.GetIntValue();
}
else if (eCSSUnit_None == listData.mType.GetUnit()) {
list->mListStyleType = NS_STYLE_LIST_STYLE_NONE;
}
else if (eCSSUnit_Inherit == listData.mType.GetUnit()) {
inherited = PR_TRUE;
list->mListStyleType = parentList->mListStyleType;
}
// list-style-image: url, none, inherit
if (eCSSUnit_URL == listData.mImage.GetUnit()) {
listData.mImage.GetStringValue(list->mListStyleImage);
}
else if (eCSSUnit_None == listData.mImage.GetUnit()) {
list->mListStyleImage.Truncate();
}
else if (eCSSUnit_Inherit == listData.mImage.GetUnit()) {
inherited = PR_TRUE;
list->mListStyleImage = parentList->mListStyleImage;
}
// list-style-position: enum, inherit
if (eCSSUnit_Enumerated == listData.mPosition.GetUnit()) {
list->mListStylePosition = listData.mPosition.GetIntValue();
}
else if (eCSSUnit_Inherit == listData.mPosition.GetUnit()) {
inherited = PR_TRUE;
list->mListStylePosition = parentList->mListStylePosition;
}
// image region property: length, auto, inherit
if (listData.mImageRegion) {
if (eCSSUnit_Inherit == listData.mImageRegion->mTop.GetUnit()) { // if one is inherit, they all are
inherited = PR_TRUE;
list->mImageRegion = parentList->mImageRegion;
}
else {
if (eCSSUnit_Auto == listData.mImageRegion->mTop.GetUnit())
list->mImageRegion.y = 0;
else if (listData.mImageRegion->mTop.IsLengthUnit())
list->mImageRegion.y = CalcLength(listData.mImageRegion->mTop, nsnull, aContext, mPresContext, inherited);
if (eCSSUnit_Auto == listData.mImageRegion->mBottom.GetUnit())
list->mImageRegion.height = 0;
else if (listData.mImageRegion->mBottom.IsLengthUnit())
list->mImageRegion.height = CalcLength(listData.mImageRegion->mBottom, nsnull, aContext,
mPresContext, inherited) - list->mImageRegion.y;
if (eCSSUnit_Auto == listData.mImageRegion->mLeft.GetUnit())
list->mImageRegion.x = 0;
else if (listData.mImageRegion->mLeft.IsLengthUnit())
list->mImageRegion.x = CalcLength(listData.mImageRegion->mLeft, nsnull, aContext, mPresContext, inherited);
if (eCSSUnit_Auto == listData.mImageRegion->mRight.GetUnit())
list->mImageRegion.width = 0;
else if (listData.mImageRegion->mRight.IsLengthUnit())
list->mImageRegion.width = CalcLength(listData.mImageRegion->mRight, nsnull, aContext, mPresContext, inherited) -
list->mImageRegion.x;
}
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_List, list);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mInheritedData)
aHighestNode->mStyleData.mInheritedData = new (mPresContext) nsInheritedStyleData;
aHighestNode->mStyleData.mInheritedData->mListData = list;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(List), aHighestNode);
}
return list;
}
const nsStyleStruct*
nsRuleNode::ComputePositionData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSPosition& posData = NS_STATIC_CAST(const nsCSSPosition&, aData);
nsStylePosition* pos;
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
pos = new (mPresContext) nsStylePosition(*NS_STATIC_CAST(nsStylePosition*, aStartStruct));
else
pos = new (mPresContext) nsStylePosition();
const nsStylePosition* parentPos = pos;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentPos = NS_STATIC_CAST(const nsStylePosition*,
parentContext->GetStyleData(eStyleStruct_Position));
PRBool inherited = aInherited;
// box offsets: length, percent, auto, inherit
if (posData.mOffset) {
nsStyleCoord coord;
nsStyleCoord parentCoord;
parentPos->mOffset.GetTop(parentCoord);
if (SetCoord(posData.mOffset->mTop, coord, parentCoord, SETCOORD_LPAH, aContext, mPresContext, inherited)) {
pos->mOffset.SetTop(coord);
}
parentPos->mOffset.GetRight(parentCoord);
if (SetCoord(posData.mOffset->mRight, coord, parentCoord, SETCOORD_LPAH, aContext, mPresContext, inherited)) {
pos->mOffset.SetRight(coord);
}
parentPos->mOffset.GetBottom(parentCoord);
if (SetCoord(posData.mOffset->mBottom, coord, parentCoord, SETCOORD_LPAH, aContext, mPresContext, inherited)) {
pos->mOffset.SetBottom(coord);
}
parentPos->mOffset.GetLeft(parentCoord);
if (SetCoord(posData.mOffset->mLeft, coord, parentCoord, SETCOORD_LPAH, aContext, mPresContext, inherited)) {
pos->mOffset.SetLeft(coord);
}
}
if (posData.mWidth.GetUnit() == eCSSUnit_Proportional)
pos->mWidth.SetIntValue((PRInt32)(posData.mWidth.GetFloatValue()), eStyleUnit_Proportional);
else
SetCoord(posData.mWidth, pos->mWidth, parentPos->mWidth,
SETCOORD_LPAH, aContext, mPresContext, inherited);
SetCoord(posData.mMinWidth, pos->mMinWidth, parentPos->mMinWidth,
SETCOORD_LPH, aContext, mPresContext, inherited);
if (! SetCoord(posData.mMaxWidth, pos->mMaxWidth, parentPos->mMaxWidth,
SETCOORD_LPH, aContext, mPresContext, inherited)) {
if (eCSSUnit_None == posData.mMaxWidth.GetUnit()) {
pos->mMaxWidth.Reset();
}
}
SetCoord(posData.mHeight, pos->mHeight, parentPos->mHeight,
SETCOORD_LPAH, aContext, mPresContext, inherited);
SetCoord(posData.mMinHeight, pos->mMinHeight, parentPos->mMinHeight,
SETCOORD_LPH, aContext, mPresContext, inherited);
if (! SetCoord(posData.mMaxHeight, pos->mMaxHeight, parentPos->mMaxHeight,
SETCOORD_LPH, aContext, mPresContext, inherited)) {
if (eCSSUnit_None == posData.mMaxHeight.GetUnit()) {
pos->mMaxHeight.Reset();
}
}
// box-sizing: enum, inherit
if (eCSSUnit_Enumerated == posData.mBoxSizing.GetUnit()) {
pos->mBoxSizing = posData.mBoxSizing.GetIntValue();
}
else if (eCSSUnit_Inherit == posData.mBoxSizing.GetUnit()) {
inherited = PR_TRUE;
pos->mBoxSizing = parentPos->mBoxSizing;
}
// z-index
if (! SetCoord(posData.mZIndex, pos->mZIndex, parentPos->mZIndex,
SETCOORD_IA, aContext, nsnull, inherited)) {
if (eCSSUnit_Inherit == posData.mZIndex.GetUnit()) {
// handle inherit, because it's ok to inherit 'auto' here
inherited = PR_TRUE;
pos->mZIndex = parentPos->mZIndex;
}
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Position, pos);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mPositionData = pos;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Position), aHighestNode);
}
return pos;
}
const nsStyleStruct*
nsRuleNode::ComputeTableData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSTable& tableData = NS_STATIC_CAST(const nsCSSTable&, aData);
nsStyleTable* table;
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
table = new (mPresContext) nsStyleTable(*NS_STATIC_CAST(nsStyleTable*, aStartStruct));
else
table = new (mPresContext) nsStyleTable();
const nsStyleTable* parentTable = table;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentTable = NS_STATIC_CAST(const nsStyleTable*,
parentContext->GetStyleData(eStyleStruct_Table));
PRBool inherited = aInherited;
// table-layout: auto, enum, inherit
if (eCSSUnit_Enumerated == tableData.mLayout.GetUnit())
table->mLayoutStrategy = tableData.mLayout.GetIntValue();
else if (eCSSUnit_Auto == tableData.mLayout.GetUnit())
table->mLayoutStrategy = NS_STYLE_TABLE_LAYOUT_AUTO;
else if (eCSSUnit_Inherit == tableData.mLayout.GetUnit()) {
inherited = PR_TRUE;
table->mLayoutStrategy = parentTable->mLayoutStrategy;
}
// rules: enum (not a real CSS prop)
if (eCSSUnit_Enumerated == tableData.mRules.GetUnit())
table->mRules = tableData.mRules.GetIntValue();
// frame: enum (not a real CSS prop)
if (eCSSUnit_Enumerated == tableData.mFrame.GetUnit())
table->mFrame = tableData.mFrame.GetIntValue();
// cols: enum, int (not a real CSS prop)
if (eCSSUnit_Enumerated == tableData.mCols.GetUnit() ||
eCSSUnit_Integer == tableData.mCols.GetUnit())
table->mCols = tableData.mCols.GetIntValue();
// span: pixels (not a real CSS prop)
if (eCSSUnit_Enumerated == tableData.mSpan.GetUnit() ||
eCSSUnit_Integer == tableData.mSpan.GetUnit())
table->mSpan = tableData.mSpan.GetIntValue();
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Table, table);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mTableData = table;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Table), aHighestNode);
}
return table;
}
const nsStyleStruct*
nsRuleNode::ComputeTableBorderData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSTable& tableData = NS_STATIC_CAST(const nsCSSTable&, aData);
nsStyleTableBorder* table = nsnull;
const nsStyleTableBorder* parentTable = nsnull;
PRBool inherited = aInherited;
if (parentContext && aRuleDetail != eRuleFullReset)
parentTable = NS_STATIC_CAST(const nsStyleTableBorder*,
parentContext->GetStyleData(eStyleStruct_TableBorder));
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
table = new (mPresContext) nsStyleTableBorder(*NS_STATIC_CAST(nsStyleTableBorder*, aStartStruct));
else {
// XXXldb What about eRuleFullInherited? Which path is faster?
if (aRuleDetail != eRuleFullMixed && aRuleDetail != eRuleFullReset) {
// No question. We will have to inherit. Go ahead and init
// with inherited vals from parent.
inherited = PR_TRUE;
if (parentTable)
table = new (mPresContext) nsStyleTableBorder(*parentTable);
}
}
if (!table)
table = new (mPresContext) nsStyleTableBorder(mPresContext);
if (!parentTable)
parentTable = table;
// border-collapse: enum, inherit
if (eCSSUnit_Enumerated == tableData.mBorderCollapse.GetUnit()) {
table->mBorderCollapse = tableData.mBorderCollapse.GetIntValue();
}
else if (eCSSUnit_Inherit == tableData.mBorderCollapse.GetUnit()) {
inherited = PR_TRUE;
table->mBorderCollapse = parentTable->mBorderCollapse;
}
nsStyleCoord coord;
// border-spacing-x: length, inherit
if (SetCoord(tableData.mBorderSpacingX, coord, coord, SETCOORD_LENGTH, aContext, mPresContext, inherited)) {
table->mBorderSpacingX = coord.GetCoordValue();
}
else if (eCSSUnit_Inherit == tableData.mBorderSpacingX.GetUnit()) {
inherited = PR_TRUE;
table->mBorderSpacingX = parentTable->mBorderSpacingX;
}
// border-spacing-y: length, inherit
if (SetCoord(tableData.mBorderSpacingY, coord, coord, SETCOORD_LENGTH, aContext, mPresContext, inherited)) {
table->mBorderSpacingY = coord.GetCoordValue();
}
else if (eCSSUnit_Inherit == tableData.mBorderSpacingY.GetUnit()) {
inherited = PR_TRUE;
table->mBorderSpacingY = parentTable->mBorderSpacingY;
}
// caption-side: enum, inherit
if (eCSSUnit_Enumerated == tableData.mCaptionSide.GetUnit()) {
table->mCaptionSide = tableData.mCaptionSide.GetIntValue();
}
else if (eCSSUnit_Inherit == tableData.mCaptionSide.GetUnit()) {
inherited = PR_TRUE;
table->mCaptionSide = parentTable->mCaptionSide;
}
// empty-cells: enum, inherit
if (eCSSUnit_Enumerated == tableData.mEmptyCells.GetUnit()) {
table->mEmptyCells = tableData.mEmptyCells.GetIntValue();
}
else if (eCSSUnit_Inherit == tableData.mEmptyCells.GetUnit()) {
inherited = PR_TRUE;
table->mEmptyCells = parentTable->mEmptyCells;
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_TableBorder, table);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mInheritedData)
aHighestNode->mStyleData.mInheritedData = new (mPresContext) nsInheritedStyleData;
aHighestNode->mStyleData.mInheritedData->mTableBorderData = table;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(TableBorder), aHighestNode);
}
return table;
}
const nsStyleStruct*
nsRuleNode::ComputeContentData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSContent& contentData = NS_STATIC_CAST(const nsCSSContent&, aData);
nsStyleContent* content;
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
content = new (mPresContext) nsStyleContent(*NS_STATIC_CAST(nsStyleContent*, aStartStruct));
else
content = new (mPresContext) nsStyleContent();
const nsStyleContent* parentContent = content;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentContent = NS_STATIC_CAST(const nsStyleContent*,
parentContext->GetStyleData(eStyleStruct_Content));
PRBool inherited = aInherited;
// content: [string, url, counter, attr, enum]+, inherit
PRUint32 count;
nsAutoString buffer;
nsCSSValueList* contentValue = contentData.mContent;
if (contentValue) {
if (eCSSUnit_Inherit == contentValue->mValue.GetUnit()) {
inherited = PR_TRUE;
count = parentContent->ContentCount();
if (NS_SUCCEEDED(content->AllocateContents(count))) {
nsStyleContentType type;
while (0 < count--) {
parentContent->GetContentAt(count, type, buffer);
content->SetContentAt(count, type, buffer);
}
}
}
else {
count = 0;
while (contentValue) {
count++;
contentValue = contentValue->mNext;
}
if (NS_SUCCEEDED(content->AllocateContents(count))) {
const nsAutoString nullStr;
count = 0;
contentValue = contentData.mContent;
while (contentValue) {
const nsCSSValue& value = contentValue->mValue;
nsCSSUnit unit = value.GetUnit();
nsStyleContentType type;
switch (unit) {
case eCSSUnit_String: type = eStyleContentType_String; break;
case eCSSUnit_URL: type = eStyleContentType_URL; break;
case eCSSUnit_Attr: type = eStyleContentType_Attr; break;
case eCSSUnit_Counter: type = eStyleContentType_Counter; break;
case eCSSUnit_Counters: type = eStyleContentType_Counters; break;
case eCSSUnit_Enumerated:
switch (value.GetIntValue()) {
case NS_STYLE_CONTENT_OPEN_QUOTE:
type = eStyleContentType_OpenQuote; break;
case NS_STYLE_CONTENT_CLOSE_QUOTE:
type = eStyleContentType_CloseQuote; break;
case NS_STYLE_CONTENT_NO_OPEN_QUOTE:
type = eStyleContentType_NoOpenQuote; break;
case NS_STYLE_CONTENT_NO_CLOSE_QUOTE:
type = eStyleContentType_NoCloseQuote; break;
default:
NS_ERROR("bad content value");
}
break;
default:
NS_ERROR("bad content type");
}
if (type < eStyleContentType_OpenQuote) {
value.GetStringValue(buffer);
Unquote(buffer);
content->SetContentAt(count++, type, buffer);
}
else {
content->SetContentAt(count++, type, nullStr);
}
contentValue = contentValue->mNext;
}
}
}
}
// counter-increment: [string [int]]+, none, inherit
nsCSSCounterData* ourIncrement = contentData.mCounterIncrement;
if (ourIncrement) {
PRInt32 increment;
if (eCSSUnit_Inherit == ourIncrement->mCounter.GetUnit()) {
inherited = PR_TRUE;
count = parentContent->CounterIncrementCount();
if (NS_SUCCEEDED(content->AllocateCounterIncrements(count))) {
while (0 < count--) {
parentContent->GetCounterIncrementAt(count, buffer, increment);
content->SetCounterIncrementAt(count, buffer, increment);
}
}
}
else if (eCSSUnit_None == ourIncrement->mCounter.GetUnit()) {
content->AllocateCounterIncrements(0);
}
else if (eCSSUnit_String == ourIncrement->mCounter.GetUnit()) {
count = 0;
while (ourIncrement) {
count++;
ourIncrement = ourIncrement->mNext;
}
if (NS_SUCCEEDED(content->AllocateCounterIncrements(count))) {
count = 0;
ourIncrement = contentData.mCounterIncrement;
while (ourIncrement) {
if (eCSSUnit_Integer == ourIncrement->mValue.GetUnit()) {
increment = ourIncrement->mValue.GetIntValue();
}
else {
increment = 1;
}
ourIncrement->mCounter.GetStringValue(buffer);
content->SetCounterIncrementAt(count++, buffer, increment);
ourIncrement = ourIncrement->mNext;
}
}
}
}
// counter-reset: [string [int]]+, none, inherit
nsCSSCounterData* ourReset = contentData.mCounterReset;
if (ourReset) {
PRInt32 reset;
if (eCSSUnit_Inherit == ourReset->mCounter.GetUnit()) {
inherited = PR_TRUE;
count = parentContent->CounterResetCount();
if (NS_SUCCEEDED(content->AllocateCounterResets(count))) {
while (0 < count--) {
parentContent->GetCounterResetAt(count, buffer, reset);
content->SetCounterResetAt(count, buffer, reset);
}
}
}
else if (eCSSUnit_None == ourReset->mCounter.GetUnit()) {
content->AllocateCounterResets(0);
}
else if (eCSSUnit_String == ourReset->mCounter.GetUnit()) {
count = 0;
while (ourReset) {
count++;
ourReset = ourReset->mNext;
}
if (NS_SUCCEEDED(content->AllocateCounterResets(count))) {
count = 0;
ourReset = contentData.mCounterReset;
while (ourReset) {
if (eCSSUnit_Integer == ourReset->mValue.GetUnit()) {
reset = ourReset->mValue.GetIntValue();
}
else {
reset = 0;
}
ourReset->mCounter.GetStringValue(buffer);
content->SetCounterResetAt(count++, buffer, reset);
ourReset = ourReset->mNext;
}
}
}
}
// marker-offset: length, auto, inherit
SetCoord(contentData.mMarkerOffset, content->mMarkerOffset, parentContent->mMarkerOffset,
SETCOORD_LH | SETCOORD_AUTO, aContext, mPresContext, inherited);
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Content, content);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mContentData = content;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Content), aHighestNode);
}
return content;
}
const nsStyleStruct*
nsRuleNode::ComputeQuotesData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSContent& contentData = NS_STATIC_CAST(const nsCSSContent&, aData);
nsStyleQuotes* quotes = nsnull;
const nsStyleQuotes* parentQuotes = nsnull;
PRBool inherited = aInherited;
if (parentContext && aRuleDetail != eRuleFullReset)
parentQuotes = NS_STATIC_CAST(const nsStyleQuotes*,
parentContext->GetStyleData(eStyleStruct_Quotes));
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
quotes = new (mPresContext) nsStyleQuotes(*NS_STATIC_CAST(nsStyleQuotes*, aStartStruct));
else {
// XXXldb What about eRuleFullInherited? Which path is faster?
if (aRuleDetail != eRuleFullMixed && aRuleDetail != eRuleFullReset) {
// No question. We will have to inherit. Go ahead and init
// with inherited vals from parent.
inherited = PR_TRUE;
if (parentQuotes)
quotes = new (mPresContext) nsStyleQuotes(*parentQuotes);
}
}
if (!quotes)
quotes = new (mPresContext) nsStyleQuotes();
if (!parentQuotes)
parentQuotes = quotes;
// quotes: [string string]+, none, inherit
PRUint32 count;
nsAutoString buffer;
nsCSSQuotes* ourQuotes = contentData.mQuotes;
if (ourQuotes) {
nsAutoString closeBuffer;
if (eCSSUnit_Inherit == ourQuotes->mOpen.GetUnit()) {
inherited = PR_TRUE;
count = parentQuotes->QuotesCount();
if (NS_SUCCEEDED(quotes->AllocateQuotes(count))) {
while (0 < count--) {
parentQuotes->GetQuotesAt(count, buffer, closeBuffer);
quotes->SetQuotesAt(count, buffer, closeBuffer);
}
}
}
else if (eCSSUnit_None == ourQuotes->mOpen.GetUnit()) {
quotes->AllocateQuotes(0);
}
else if (eCSSUnit_String == ourQuotes->mOpen.GetUnit()) {
count = 0;
while (ourQuotes) {
count++;
ourQuotes = ourQuotes->mNext;
}
if (NS_SUCCEEDED(quotes->AllocateQuotes(count))) {
count = 0;
ourQuotes = contentData.mQuotes;
while (ourQuotes) {
ourQuotes->mOpen.GetStringValue(buffer);
ourQuotes->mClose.GetStringValue(closeBuffer);
Unquote(buffer);
Unquote(closeBuffer);
quotes->SetQuotesAt(count++, buffer, closeBuffer);
ourQuotes = ourQuotes->mNext;
}
}
}
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_Quotes, quotes);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mInheritedData)
aHighestNode->mStyleData.mInheritedData = new (mPresContext) nsInheritedStyleData;
aHighestNode->mStyleData.mInheritedData->mQuotesData = quotes;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(Quotes), aHighestNode);
}
return quotes;
}
#ifdef INCLUDE_XUL
const nsStyleStruct*
nsRuleNode::ComputeXULData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
const nsCSSXUL& xulData = NS_STATIC_CAST(const nsCSSXUL&, aData);
nsStyleXUL* xul = nsnull;
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
xul = new (mPresContext) nsStyleXUL(*NS_STATIC_CAST(nsStyleXUL*, aStartStruct));
else
xul = new (mPresContext) nsStyleXUL();
const nsStyleXUL* parentXUL = xul;
if (parentContext &&
aRuleDetail != eRuleFullReset &&
aRuleDetail != eRulePartialReset &&
aRuleDetail != eRuleNone)
parentXUL = NS_STATIC_CAST(const nsStyleXUL*,
parentContext->GetStyleData(eStyleStruct_XUL));
PRBool inherited = aInherited;
// box-align: enum, inherit
if (eCSSUnit_Enumerated == xulData.mBoxAlign.GetUnit()) {
xul->mBoxAlign = xulData.mBoxAlign.GetIntValue();
}
else if (eCSSUnit_Inherit == xulData.mBoxAlign.GetUnit()) {
inherited = PR_TRUE;
xul->mBoxAlign = parentXUL->mBoxAlign;
}
// box-direction: enum, inherit
if (eCSSUnit_Enumerated == xulData.mBoxDirection.GetUnit()) {
xul->mBoxDirection = xulData.mBoxDirection.GetIntValue();
}
else if (eCSSUnit_Inherit == xulData.mBoxDirection.GetUnit()) {
inherited = PR_TRUE;
xul->mBoxDirection = parentXUL->mBoxDirection;
}
// box-flex: factor, inherit
if (eCSSUnit_Number == xulData.mBoxFlex.GetUnit()) {
xul->mBoxFlex = xulData.mBoxFlex.GetFloatValue();
}
else if (eCSSUnit_Inherit == xulData.mBoxOrient.GetUnit()) {
inherited = PR_TRUE;
xul->mBoxFlex = parentXUL->mBoxFlex;
}
// box-orient: enum, inherit
if (eCSSUnit_Enumerated == xulData.mBoxOrient.GetUnit()) {
xul->mBoxOrient = xulData.mBoxOrient.GetIntValue();
}
else if (eCSSUnit_Inherit == xulData.mBoxOrient.GetUnit()) {
inherited = PR_TRUE;
xul->mBoxOrient = parentXUL->mBoxOrient;
}
// box-pack: enum, inherit
if (eCSSUnit_Enumerated == xulData.mBoxPack.GetUnit()) {
xul->mBoxPack = xulData.mBoxPack.GetIntValue();
}
else if (eCSSUnit_Inherit == xulData.mBoxPack.GetUnit()) {
inherited = PR_TRUE;
xul->mBoxPack = parentXUL->mBoxPack;
}
// box-ordinal-group: integer
if (eCSSUnit_Integer == xulData.mBoxOrdinal.GetUnit()) {
xul->mBoxOrdinal = xulData.mBoxOrdinal.GetIntValue();
}
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_XUL, xul);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mResetData)
aHighestNode->mStyleData.mResetData = new (mPresContext) nsResetStyleData;
aHighestNode->mStyleData.mResetData->mXULData = xul;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(XUL), aHighestNode);
}
return xul;
}
#endif
#ifdef MOZ_SVG
static void
SetSVGPaint(const nsCSSValue& aValue, const nsStyleSVGPaint& parentPaint,
nsIPresContext* aPresContext, nsStyleSVGPaint& aResult, PRBool& aInherited)
{
if (aValue.GetUnit() == eCSSUnit_Inherit) {
aResult = parentPaint;
aInherited = PR_TRUE;
} else if (aValue.GetUnit() == eCSSUnit_None) {
aResult.mType = eStyleSVGPaintType_None;
} else if (SetColor(aValue, parentPaint.mColor, aPresContext, aResult.mColor, aInherited)) {
aResult.mType = eStyleSVGPaintType_Color;
}
}
static void
SetSVGOpacity(const nsCSSValue& aValue, float parentOpacity, float& opacity, PRBool& aInherited)
{
if (aValue.GetUnit() == eCSSUnit_Inherit) {
opacity = parentOpacity;
aInherited = PR_TRUE;
}
else if (aValue.GetUnit() == eCSSUnit_Number) {
opacity = aValue.GetFloatValue();
}
}
static void
SetSVGLength(const nsCSSValue& aValue, float parentLength, float& length,
nsIStyleContext* aContext, nsIPresContext* aPresContext, PRBool& aInherited)
{
nsStyleCoord coord;
PRBool dummy;
if (SetCoord(aValue, coord, coord,
SETCOORD_LP | SETCOORD_FACTOR,
aContext, aPresContext, dummy)) {
if (coord.GetUnit() == eStyleUnit_Factor) { // user units
length = (float) coord.GetFactorValue();
}
else {
length = (float) coord.GetCoordValue();
float twipsPerPix;
aPresContext->GetScaledPixelsToTwips(&twipsPerPix);
if (twipsPerPix == 0.0f)
twipsPerPix = 1e-20f;
length /= twipsPerPix;
}
}
else if (aValue.GetUnit() == eCSSUnit_Inherit) {
length = parentLength;
aInherited = PR_TRUE;
}
}
const nsStyleStruct*
nsRuleNode::ComputeSVGData(nsStyleStruct* aStartStruct, const nsCSSStruct& aData,
nsIStyleContext* aContext,
nsRuleNode* aHighestNode,
const RuleDetail& aRuleDetail, PRBool aInherited)
{
nsCOMPtr<nsIStyleContext> parentContext = getter_AddRefs(aContext->GetParent());
nsStyleSVG* svg = nsnull;
nsStyleSVG* parentSVG = svg;
PRBool inherited = aInherited;
const nsCSSSVG& SVGData = NS_STATIC_CAST(const nsCSSSVG&, aData);
if (aStartStruct)
// We only need to compute the delta between this computed data and our
// computed data.
svg = new (mPresContext) nsStyleSVG(*NS_STATIC_CAST(nsStyleSVG*,aStartStruct));
else {
if (aRuleDetail != eRuleFullMixed) {
// No question. We will have to inherit. Go ahead and init
// with inherited vals from parent.
inherited = PR_TRUE;
if (parentContext)
parentSVG = (nsStyleSVG*)parentContext->GetStyleData(eStyleStruct_SVG);
if (parentSVG)
svg = new (mPresContext) nsStyleSVG(*parentSVG);
}
}
if (!svg)
svg = parentSVG = new (mPresContext) nsStyleSVG();
// fill:
SetSVGPaint(SVGData.mFill, parentSVG->mFill, mPresContext, svg->mFill, inherited);
// fill-opacity:
SetSVGOpacity(SVGData.mFillOpacity, parentSVG->mFillOpacity, svg->mFillOpacity, inherited);
// fill-rule: enum, inherit
if (eCSSUnit_Enumerated == SVGData.mFillRule.GetUnit()) {
svg->mFillRule = SVGData.mFillRule.GetIntValue();
}
else if (eCSSUnit_Inherit == SVGData.mFillRule.GetUnit()) {
inherited = PR_TRUE;
svg->mFillRule = parentSVG->mFillRule;
}
// stroke:
SetSVGPaint(SVGData.mStroke, parentSVG->mStroke, mPresContext, svg->mStroke, inherited);
// stroke-dasharray: <dasharray>, none, inherit
if (eCSSUnit_String == SVGData.mStrokeDasharray.GetUnit()) {
SVGData.mStrokeDasharray.GetStringValue(svg->mStrokeDasharray);
}
else if (eCSSUnit_None == SVGData.mStrokeDasharray.GetUnit()) {
svg->mStrokeDasharray.Truncate();
}
else if (eCSSUnit_Inherit == SVGData.mStrokeDasharray.GetUnit()) {
inherited = PR_TRUE;
svg->mStrokeDasharray = parentSVG->mStrokeDasharray;
}
// stroke-dashoffset: <dashoffset>, inherit
SetSVGLength(SVGData.mStrokeDashoffset, parentSVG->mStrokeDashoffset,
svg->mStrokeDashoffset, aContext, mPresContext, inherited);
// stroke-linecap: enum, inherit
if (eCSSUnit_Enumerated == SVGData.mStrokeLinecap.GetUnit()) {
svg->mStrokeLinecap = SVGData.mStrokeLinecap.GetIntValue();
}
else if (eCSSUnit_Inherit == SVGData.mStrokeLinecap.GetUnit()) {
inherited = PR_TRUE;
svg->mStrokeLinecap = parentSVG->mStrokeLinecap;
}
// stroke-linejoin: enum, inherit
if (eCSSUnit_Enumerated == SVGData.mStrokeLinejoin.GetUnit()) {
svg->mStrokeLinejoin = SVGData.mStrokeLinejoin.GetIntValue();
}
else if (eCSSUnit_Inherit == SVGData.mStrokeLinejoin.GetUnit()) {
inherited = PR_TRUE;
svg->mStrokeLinejoin = parentSVG->mStrokeLinejoin;
}
// stroke-miterlimit: <miterlimit>, inherit
if (eCSSUnit_Number == SVGData.mStrokeMiterlimit.GetUnit()) {
float value = SVGData.mStrokeMiterlimit.GetFloatValue();
if (value > 1) { // XXX this check should probably be in nsCSSParser
svg->mStrokeMiterlimit = value;
}
}
else if (eCSSUnit_Inherit == SVGData.mStrokeMiterlimit.GetUnit()) {
svg->mStrokeMiterlimit = parentSVG->mStrokeMiterlimit;
inherited = PR_TRUE;
}
// stroke-opacity:
SetSVGOpacity(SVGData.mStrokeOpacity, parentSVG->mStrokeOpacity, svg->mStrokeOpacity, inherited);
// stroke-width:
SetSVGLength(SVGData.mStrokeWidth, parentSVG->mStrokeWidth,
svg->mStrokeWidth, aContext, mPresContext, inherited);
if (inherited)
// We inherited, and therefore can't be cached in the rule node. We have to be put right on the
// style context.
aContext->SetStyle(eStyleStruct_SVG, svg);
else {
// We were fully specified and can therefore be cached right on the rule node.
if (!aHighestNode->mStyleData.mInheritedData)
aHighestNode->mStyleData.mInheritedData = new (mPresContext) nsInheritedStyleData;
aHighestNode->mStyleData.mInheritedData->mSVGData = svg;
// Propagate the bit down.
PropagateDependentBit(NS_STYLE_INHERIT_BIT(SVG), aHighestNode);
}
return svg;
}
#endif
inline const nsStyleStruct*
nsRuleNode::GetParentData(const nsStyleStructID aSID)
{
nsRuleNode* ruleNode = mParent;
nsStyleStruct* currStruct = nsnull;
while (ruleNode) {
currStruct = ruleNode->mStyleData.GetStyleData(aSID);
if (currStruct)
break; // We found a rule with fully specified data. We don't need to go up
// the tree any further, since the remainder of this branch has already
// been computed.
ruleNode = ruleNode->mParent; // Climb up to the next rule in the tree (a less specific rule).
}
return currStruct; // Just return whatever we found.
}
nsRuleNode::GetStyleDataFn
nsRuleNode::gGetStyleDataFn[] = {
#define STYLE_STRUCT(name, checkdata_cb) &nsRuleNode::Get##name##Data,
#include "nsStyleStructList.h"
#undef STYLE_STRUCT
nsnull
};
const nsStyleStruct*
nsRuleNode::GetStyleData(nsStyleStructID aSID,
nsIStyleContext* aContext,
PRBool aComputeData)
{
const nsStyleStruct* cachedData = mStyleData.GetStyleData(aSID);
if (cachedData)
return cachedData; // We have a fully specified struct. Just return it.
if (mDependentBits & nsCachedStyleData::GetBitForSID(aSID))
return GetParentData(aSID); // We depend on an ancestor for this
// struct since the cached struct it has
// is also appropriate for this rule
// node. Just go up the rule tree and
// return the first cached struct we
// find.
// Nothing is cached. We'll have to delve further and examine our rules.
GetStyleDataFn fn = gGetStyleDataFn[aSID];
return fn ? (this->*fn)(aContext, aComputeData) : nsnull;
}
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