зеркало из https://github.com/mozilla/pjs.git
490 строки
13 KiB
C++
490 строки
13 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla 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/MPL/
|
|
*
|
|
* 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.org 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):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of 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 MPL, 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 MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/* representation of simple property values within CSS declarations */
|
|
|
|
#include "nsCSSValue.h"
|
|
#include "nsString.h"
|
|
#include "nsCSSProps.h"
|
|
#include "nsReadableUtils.h"
|
|
#include "imgIRequest.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsIPrincipal.h"
|
|
|
|
// Paint forcing
|
|
#include "prenv.h"
|
|
|
|
nsCSSValue::nsCSSValue(PRInt32 aValue, nsCSSUnit aUnit)
|
|
: mUnit(aUnit)
|
|
{
|
|
NS_ASSERTION(aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated ||
|
|
aUnit == eCSSUnit_EnumColor, "not an int value");
|
|
if (aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated ||
|
|
aUnit == eCSSUnit_EnumColor) {
|
|
mValue.mInt = aValue;
|
|
}
|
|
else {
|
|
mUnit = eCSSUnit_Null;
|
|
mValue.mInt = 0;
|
|
}
|
|
}
|
|
|
|
nsCSSValue::nsCSSValue(float aValue, nsCSSUnit aUnit)
|
|
: mUnit(aUnit)
|
|
{
|
|
NS_ASSERTION(eCSSUnit_Percent <= aUnit, "not a float value");
|
|
if (eCSSUnit_Percent <= aUnit) {
|
|
mValue.mFloat = aValue;
|
|
}
|
|
else {
|
|
mUnit = eCSSUnit_Null;
|
|
mValue.mInt = 0;
|
|
}
|
|
}
|
|
|
|
nsCSSValue::nsCSSValue(const nsString& aValue, nsCSSUnit aUnit)
|
|
: mUnit(aUnit)
|
|
{
|
|
NS_ASSERTION(UnitHasStringValue(), "not a string value");
|
|
if (UnitHasStringValue()) {
|
|
mValue.mString = BufferFromString(aValue);
|
|
if (NS_UNLIKELY(!mValue.mString)) {
|
|
// XXXbz not much we can do here; just make sure that our promise of a
|
|
// non-null mValue.mString holds for string units.
|
|
mUnit = eCSSUnit_Null;
|
|
}
|
|
}
|
|
else {
|
|
mUnit = eCSSUnit_Null;
|
|
mValue.mInt = 0;
|
|
}
|
|
}
|
|
|
|
nsCSSValue::nsCSSValue(nscolor aValue)
|
|
: mUnit(eCSSUnit_Color)
|
|
{
|
|
mValue.mColor = aValue;
|
|
}
|
|
|
|
nsCSSValue::nsCSSValue(nsCSSValue::Array* aValue, nsCSSUnit aUnit)
|
|
: mUnit(aUnit)
|
|
{
|
|
NS_ASSERTION(eCSSUnit_Array <= aUnit && aUnit <= eCSSUnit_Counters,
|
|
"bad unit");
|
|
mValue.mArray = aValue;
|
|
mValue.mArray->AddRef();
|
|
}
|
|
|
|
nsCSSValue::nsCSSValue(nsCSSValue::URL* aValue)
|
|
: mUnit(eCSSUnit_URL)
|
|
{
|
|
mValue.mURL = aValue;
|
|
mValue.mURL->AddRef();
|
|
}
|
|
|
|
nsCSSValue::nsCSSValue(nsCSSValue::Image* aValue)
|
|
: mUnit(eCSSUnit_Image)
|
|
{
|
|
mValue.mImage = aValue;
|
|
mValue.mImage->AddRef();
|
|
}
|
|
|
|
nsCSSValue::nsCSSValue(const nsCSSValue& aCopy)
|
|
: mUnit(aCopy.mUnit)
|
|
{
|
|
if (mUnit <= eCSSUnit_Dummy) {
|
|
// nothing to do, but put this important case first
|
|
}
|
|
else if (eCSSUnit_Percent <= mUnit) {
|
|
mValue.mFloat = aCopy.mValue.mFloat;
|
|
}
|
|
else if (UnitHasStringValue()) {
|
|
mValue.mString = aCopy.mValue.mString;
|
|
mValue.mString->AddRef();
|
|
}
|
|
else if (eCSSUnit_Integer <= mUnit && mUnit <= eCSSUnit_EnumColor) {
|
|
mValue.mInt = aCopy.mValue.mInt;
|
|
}
|
|
else if (eCSSUnit_Color == mUnit) {
|
|
mValue.mColor = aCopy.mValue.mColor;
|
|
}
|
|
else if (eCSSUnit_Array <= mUnit && mUnit <= eCSSUnit_Counters) {
|
|
mValue.mArray = aCopy.mValue.mArray;
|
|
mValue.mArray->AddRef();
|
|
}
|
|
else if (eCSSUnit_URL == mUnit) {
|
|
mValue.mURL = aCopy.mValue.mURL;
|
|
mValue.mURL->AddRef();
|
|
}
|
|
else if (eCSSUnit_Image == mUnit) {
|
|
mValue.mImage = aCopy.mValue.mImage;
|
|
mValue.mImage->AddRef();
|
|
}
|
|
else {
|
|
NS_NOTREACHED("unknown unit");
|
|
}
|
|
}
|
|
|
|
nsCSSValue& nsCSSValue::operator=(const nsCSSValue& aCopy)
|
|
{
|
|
if (this != &aCopy) {
|
|
Reset();
|
|
new (this) nsCSSValue(aCopy);
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
PRBool nsCSSValue::operator==(const nsCSSValue& aOther) const
|
|
{
|
|
if (mUnit == aOther.mUnit) {
|
|
if (mUnit <= eCSSUnit_Dummy) {
|
|
return PR_TRUE;
|
|
}
|
|
else if (UnitHasStringValue()) {
|
|
return (NS_strcmp(GetBufferValue(mValue.mString),
|
|
GetBufferValue(aOther.mValue.mString)) == 0);
|
|
}
|
|
else if ((eCSSUnit_Integer <= mUnit) && (mUnit <= eCSSUnit_EnumColor)) {
|
|
return mValue.mInt == aOther.mValue.mInt;
|
|
}
|
|
else if (eCSSUnit_Color == mUnit) {
|
|
return mValue.mColor == aOther.mValue.mColor;
|
|
}
|
|
else if (eCSSUnit_Array <= mUnit && mUnit <= eCSSUnit_Counters) {
|
|
return *mValue.mArray == *aOther.mValue.mArray;
|
|
}
|
|
else if (eCSSUnit_URL == mUnit) {
|
|
return *mValue.mURL == *aOther.mValue.mURL;
|
|
}
|
|
else if (eCSSUnit_Image == mUnit) {
|
|
return *mValue.mImage == *aOther.mValue.mImage;
|
|
}
|
|
else {
|
|
return mValue.mFloat == aOther.mValue.mFloat;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
imgIRequest* nsCSSValue::GetImageValue() const
|
|
{
|
|
NS_ASSERTION(mUnit == eCSSUnit_Image, "not an Image value");
|
|
return mValue.mImage->mRequest;
|
|
}
|
|
|
|
nscoord nsCSSValue::GetLengthTwips() const
|
|
{
|
|
NS_ASSERTION(IsFixedLengthUnit(), "not a fixed length unit");
|
|
|
|
if (IsFixedLengthUnit()) {
|
|
switch (mUnit) {
|
|
case eCSSUnit_Inch:
|
|
return NS_INCHES_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Foot:
|
|
return NS_FEET_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Mile:
|
|
return NS_MILES_TO_TWIPS(mValue.mFloat);
|
|
|
|
case eCSSUnit_Millimeter:
|
|
return NS_MILLIMETERS_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Centimeter:
|
|
return NS_CENTIMETERS_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Meter:
|
|
return NS_METERS_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Kilometer:
|
|
return NS_KILOMETERS_TO_TWIPS(mValue.mFloat);
|
|
|
|
case eCSSUnit_Point:
|
|
return NS_POINTS_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Pica:
|
|
return NS_PICAS_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Didot:
|
|
return NS_DIDOTS_TO_TWIPS(mValue.mFloat);
|
|
case eCSSUnit_Cicero:
|
|
return NS_CICEROS_TO_TWIPS(mValue.mFloat);
|
|
default:
|
|
NS_ERROR("should never get here");
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void nsCSSValue::DoReset()
|
|
{
|
|
if (UnitHasStringValue()) {
|
|
mValue.mString->Release();
|
|
} else if (eCSSUnit_Array <= mUnit && mUnit <= eCSSUnit_Counters) {
|
|
mValue.mArray->Release();
|
|
} else if (eCSSUnit_URL == mUnit) {
|
|
mValue.mURL->Release();
|
|
} else if (eCSSUnit_Image == mUnit) {
|
|
mValue.mImage->Release();
|
|
}
|
|
mUnit = eCSSUnit_Null;
|
|
}
|
|
|
|
void nsCSSValue::SetIntValue(PRInt32 aValue, nsCSSUnit aUnit)
|
|
{
|
|
NS_ASSERTION(aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated ||
|
|
aUnit == eCSSUnit_EnumColor, "not an int value");
|
|
Reset();
|
|
if (aUnit == eCSSUnit_Integer || aUnit == eCSSUnit_Enumerated ||
|
|
aUnit == eCSSUnit_EnumColor) {
|
|
mUnit = aUnit;
|
|
mValue.mInt = aValue;
|
|
}
|
|
}
|
|
|
|
void nsCSSValue::SetPercentValue(float aValue)
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_Percent;
|
|
mValue.mFloat = aValue;
|
|
}
|
|
|
|
void nsCSSValue::SetFloatValue(float aValue, nsCSSUnit aUnit)
|
|
{
|
|
NS_ASSERTION(eCSSUnit_Number <= aUnit, "not a float value");
|
|
Reset();
|
|
if (eCSSUnit_Number <= aUnit) {
|
|
mUnit = aUnit;
|
|
mValue.mFloat = aValue;
|
|
}
|
|
}
|
|
|
|
void nsCSSValue::SetStringValue(const nsString& aValue,
|
|
nsCSSUnit aUnit)
|
|
{
|
|
Reset();
|
|
mUnit = aUnit;
|
|
NS_ASSERTION(UnitHasStringValue(), "not a string unit");
|
|
if (UnitHasStringValue()) {
|
|
mValue.mString = BufferFromString(aValue);
|
|
if (NS_UNLIKELY(!mValue.mString)) {
|
|
// XXXbz not much we can do here; just make sure that our promise of a
|
|
// non-null mValue.mString holds for string units.
|
|
mUnit = eCSSUnit_Null;
|
|
}
|
|
} else
|
|
mUnit = eCSSUnit_Null;
|
|
}
|
|
|
|
void nsCSSValue::SetColorValue(nscolor aValue)
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_Color;
|
|
mValue.mColor = aValue;
|
|
}
|
|
|
|
void nsCSSValue::SetArrayValue(nsCSSValue::Array* aValue, nsCSSUnit aUnit)
|
|
{
|
|
NS_ASSERTION(eCSSUnit_Array <= aUnit && aUnit <= eCSSUnit_Counters,
|
|
"bad unit");
|
|
Reset();
|
|
mUnit = aUnit;
|
|
mValue.mArray = aValue;
|
|
mValue.mArray->AddRef();
|
|
}
|
|
|
|
void nsCSSValue::SetURLValue(nsCSSValue::URL* aValue)
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_URL;
|
|
mValue.mURL = aValue;
|
|
mValue.mURL->AddRef();
|
|
}
|
|
|
|
void nsCSSValue::SetImageValue(nsCSSValue::Image* aValue)
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_Image;
|
|
mValue.mImage = aValue;
|
|
mValue.mImage->AddRef();
|
|
}
|
|
|
|
void nsCSSValue::SetAutoValue()
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_Auto;
|
|
}
|
|
|
|
void nsCSSValue::SetInheritValue()
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_Inherit;
|
|
}
|
|
|
|
void nsCSSValue::SetInitialValue()
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_Initial;
|
|
}
|
|
|
|
void nsCSSValue::SetNoneValue()
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_None;
|
|
}
|
|
|
|
void nsCSSValue::SetNormalValue()
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_Normal;
|
|
}
|
|
|
|
void nsCSSValue::SetSystemFontValue()
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_System_Font;
|
|
}
|
|
|
|
void nsCSSValue::SetDummyValue()
|
|
{
|
|
Reset();
|
|
mUnit = eCSSUnit_Dummy;
|
|
}
|
|
|
|
void nsCSSValue::StartImageLoad(nsIDocument* aDocument) const
|
|
{
|
|
NS_PRECONDITION(eCSSUnit_URL == mUnit, "Not a URL value!");
|
|
nsCSSValue::Image* image =
|
|
new nsCSSValue::Image(mValue.mURL->mURI,
|
|
mValue.mURL->mString,
|
|
mValue.mURL->mReferrer,
|
|
mValue.mURL->mOriginPrincipal,
|
|
aDocument);
|
|
if (image) {
|
|
nsCSSValue* writable = const_cast<nsCSSValue*>(this);
|
|
writable->SetImageValue(image);
|
|
}
|
|
}
|
|
|
|
// static
|
|
nsStringBuffer*
|
|
nsCSSValue::BufferFromString(const nsString& aValue)
|
|
{
|
|
nsStringBuffer* buffer = nsStringBuffer::FromString(aValue);
|
|
if (buffer) {
|
|
buffer->AddRef();
|
|
return buffer;
|
|
}
|
|
|
|
PRUnichar length = aValue.Length();
|
|
buffer = nsStringBuffer::Alloc((length + 1) * sizeof(PRUnichar));
|
|
if (NS_LIKELY(buffer != 0)) {
|
|
PRUnichar* data = static_cast<PRUnichar*>(buffer->Data());
|
|
nsCharTraits<PRUnichar>::copy(data, aValue.get(), length);
|
|
// Null-terminate.
|
|
data[length] = 0;
|
|
}
|
|
|
|
return buffer;
|
|
}
|
|
|
|
nsCSSValue::URL::URL(nsIURI* aURI, nsStringBuffer* aString, nsIURI* aReferrer,
|
|
nsIPrincipal* aOriginPrincipal)
|
|
: mURI(aURI),
|
|
mString(aString),
|
|
mReferrer(aReferrer),
|
|
mOriginPrincipal(aOriginPrincipal),
|
|
mRefCnt(0)
|
|
{
|
|
NS_PRECONDITION(aOriginPrincipal, "Must have an origin principal");
|
|
|
|
mString->AddRef();
|
|
MOZ_COUNT_CTOR(nsCSSValue::URL);
|
|
}
|
|
|
|
nsCSSValue::URL::~URL()
|
|
{
|
|
mString->Release();
|
|
MOZ_COUNT_DTOR(nsCSSValue::URL);
|
|
}
|
|
|
|
PRBool
|
|
nsCSSValue::URL::operator==(const URL& aOther) const
|
|
{
|
|
PRBool eq;
|
|
return NS_strcmp(GetBufferValue(mString),
|
|
GetBufferValue(aOther.mString)) == 0 &&
|
|
(mURI == aOther.mURI || // handles null == null
|
|
(mURI && aOther.mURI &&
|
|
NS_SUCCEEDED(mURI->Equals(aOther.mURI, &eq)) &&
|
|
eq)) &&
|
|
(mOriginPrincipal == aOther.mOriginPrincipal ||
|
|
(NS_SUCCEEDED(mOriginPrincipal->Equals(aOther.mOriginPrincipal,
|
|
&eq)) && eq));
|
|
}
|
|
|
|
PRBool
|
|
nsCSSValue::URL::URIEquals(const URL& aOther) const
|
|
{
|
|
PRBool eq;
|
|
// Worth comparing mURI to aOther.mURI and mOriginPrincipal to
|
|
// aOther.mOriginPrincipal, because in the (probably common) case when this
|
|
// value was one of the ones that in fact did not change this will be our
|
|
// fast path to equality
|
|
return (mURI == aOther.mURI ||
|
|
(NS_SUCCEEDED(mURI->Equals(aOther.mURI, &eq)) && eq)) &&
|
|
(mOriginPrincipal == aOther.mOriginPrincipal ||
|
|
(NS_SUCCEEDED(mOriginPrincipal->Equals(aOther.mOriginPrincipal,
|
|
&eq)) && eq));
|
|
}
|
|
|
|
nsCSSValue::Image::Image(nsIURI* aURI, nsStringBuffer* aString,
|
|
nsIURI* aReferrer, nsIPrincipal* aOriginPrincipal,
|
|
nsIDocument* aDocument)
|
|
: URL(aURI, aString, aReferrer, aOriginPrincipal)
|
|
{
|
|
MOZ_COUNT_CTOR(nsCSSValue::Image);
|
|
|
|
if (mURI &&
|
|
nsContentUtils::CanLoadImage(mURI, aDocument, aDocument,
|
|
aOriginPrincipal)) {
|
|
nsContentUtils::LoadImage(mURI, aDocument, aOriginPrincipal, aReferrer,
|
|
nsnull, nsIRequest::LOAD_NORMAL,
|
|
getter_AddRefs(mRequest));
|
|
}
|
|
}
|
|
|
|
nsCSSValue::Image::~Image()
|
|
{
|
|
MOZ_COUNT_DTOR(nsCSSValue::Image);
|
|
}
|