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gecko-dev/layout/generic/nsFrameSetFrame.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* rendering object for HTML <frameset> elements */
#include "nsFrameSetFrame.h"
#include "gfxContext.h"
#include "gfxUtils.h"
#include "mozilla/ComputedStyle.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Helpers.h"
#include "mozilla/Likely.h"
#include "mozilla/PresShell.h"
#include "mozilla/PresShellInlines.h"
#include "nsGenericHTMLElement.h"
#include "nsAttrValueInlines.h"
#include "nsLeafFrame.h"
#include "nsContainerFrame.h"
#include "nsLayoutUtils.h"
#include "nsPresContext.h"
#include "nsIContentInlines.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "nsHTMLParts.h"
#include "nsNameSpaceManager.h"
#include "nsCSSAnonBoxes.h"
#include "mozilla/ServoStyleSet.h"
#include "mozilla/ServoStyleSetInlines.h"
#include "mozilla/dom/Element.h"
#include "nsDisplayList.h"
#include "mozAutoDocUpdate.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/ChildIterator.h"
#include "mozilla/dom/HTMLFrameSetElement.h"
#include "mozilla/LookAndFeel.h"
#include "mozilla/MouseEvents.h"
#include "nsSubDocumentFrame.h"
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::gfx;
// masks for mEdgeVisibility
#define LEFT_VIS 0x0001
#define RIGHT_VIS 0x0002
#define TOP_VIS 0x0004
#define BOTTOM_VIS 0x0008
#define ALL_VIS 0x000F
#define NONE_VIS 0x0000
/*******************************************************************************
* nsFramesetDrag
******************************************************************************/
nsFramesetDrag::nsFramesetDrag() { UnSet(); }
void nsFramesetDrag::Reset(bool aVertical, int32_t aIndex, int32_t aChange,
nsHTMLFramesetFrame* aSource) {
mVertical = aVertical;
mIndex = aIndex;
mChange = aChange;
mSource = aSource;
}
void nsFramesetDrag::UnSet() {
mVertical = true;
mIndex = -1;
mChange = 0;
mSource = nullptr;
}
/*******************************************************************************
* nsHTMLFramesetBorderFrame
******************************************************************************/
class nsHTMLFramesetBorderFrame final : public nsLeafFrame {
public:
NS_DECL_FRAMEARENA_HELPERS(nsHTMLFramesetBorderFrame)
#ifdef DEBUG_FRAME_DUMP
virtual nsresult GetFrameName(nsAString& aResult) const override;
#endif
virtual nsresult HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus) override;
Maybe<Cursor> GetCursor(const nsPoint&) override;
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
bool GetVisibility() { return mVisibility; }
void SetVisibility(bool aVisibility);
void SetColor(nscolor aColor);
void PaintBorder(DrawTarget* aDrawTarget, nsPoint aPt);
protected:
nsHTMLFramesetBorderFrame(ComputedStyle*, nsPresContext*, int32_t aWidth,
bool aVertical, bool aVisible);
virtual ~nsHTMLFramesetBorderFrame();
virtual nscoord GetIntrinsicISize() override;
virtual nscoord GetIntrinsicBSize() override;
// the prev and next neighbors are indexes into the row (for a horizontal
// border) or col (for a vertical border) of nsHTMLFramesetFrames or
// nsHTMLFrames
int32_t mPrevNeighbor;
int32_t mNextNeighbor;
nscolor mColor;
int32_t mWidth;
bool mVertical;
bool mVisibility;
bool mCanResize;
friend class nsHTMLFramesetFrame;
};
/*******************************************************************************
* nsHTMLFramesetBlankFrame
******************************************************************************/
class nsHTMLFramesetBlankFrame final : public nsLeafFrame {
public:
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS(nsHTMLFramesetBlankFrame)
#ifdef DEBUG_FRAME_DUMP
virtual nsresult GetFrameName(nsAString& aResult) const override {
return MakeFrameName(u"FramesetBlank"_ns, aResult);
}
#endif
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
protected:
explicit nsHTMLFramesetBlankFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsLeafFrame(aStyle, aPresContext, kClassID) {}
virtual ~nsHTMLFramesetBlankFrame();
virtual nscoord GetIntrinsicISize() override;
virtual nscoord GetIntrinsicBSize() override;
friend class nsHTMLFramesetFrame;
friend class nsHTMLFrameset;
};
/*******************************************************************************
* nsHTMLFramesetFrame
******************************************************************************/
bool nsHTMLFramesetFrame::gDragInProgress = false;
#define DEFAULT_BORDER_WIDTH_PX 6
nsHTMLFramesetFrame::nsHTMLFramesetFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsContainerFrame(aStyle, aPresContext, kClassID) {
mNumRows = 0;
mNumCols = 0;
mEdgeVisibility = 0;
mParentFrameborder = eFrameborder_Yes; // default
mParentBorderWidth = -1; // default not set
mParentBorderColor = NO_COLOR; // default not set
mFirstDragPoint.x = mFirstDragPoint.y = 0;
mMinDrag = nsPresContext::CSSPixelsToAppUnits(2);
mNonBorderChildCount = 0;
mNonBlankChildCount = 0;
mDragger = nullptr;
mChildCount = 0;
mTopLevelFrameset = nullptr;
mEdgeColors.Set(NO_COLOR);
}
nsHTMLFramesetFrame::~nsHTMLFramesetFrame() = default;
NS_QUERYFRAME_HEAD(nsHTMLFramesetFrame)
NS_QUERYFRAME_ENTRY(nsHTMLFramesetFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
void nsHTMLFramesetFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) {
nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
// find the highest ancestor that is a frameset
nsIFrame* parentFrame = GetParent();
mTopLevelFrameset = this;
while (parentFrame) {
nsHTMLFramesetFrame* frameset = do_QueryFrame(parentFrame);
if (frameset) {
mTopLevelFrameset = frameset;
parentFrame = parentFrame->GetParent();
} else {
break;
}
}
nsPresContext* presContext = PresContext();
mozilla::PresShell* presShell = presContext->PresShell();
nsFrameborder frameborder = GetFrameBorder();
int32_t borderWidth = GetBorderWidth(presContext, false);
nscolor borderColor = GetBorderColor();
// Get the rows= cols= data
HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromNode(mContent);
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* rowSpecs = nullptr;
const nsFramesetSpec* colSpecs = nullptr;
// GetRowSpec and GetColSpec can fail, but when they do they set
// mNumRows and mNumCols respectively to 0, so we deal with it fine.
ourContent->GetRowSpec(&mNumRows, &rowSpecs);
ourContent->GetColSpec(&mNumCols, &colSpecs);
static_assert(
NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nscoord),
"Maximum value of mNumRows and mNumCols is NS_MAX_FRAMESET_SPEC_COUNT");
mRowSizes = MakeUnique<nscoord[]>(mNumRows);
mColSizes = MakeUnique<nscoord[]>(mNumCols);
static_assert(
NS_MAX_FRAMESET_SPEC_COUNT < INT32_MAX / NS_MAX_FRAMESET_SPEC_COUNT,
"Should not overflow numCells");
int32_t numCells = mNumRows * mNumCols;
static_assert(NS_MAX_FRAMESET_SPEC_COUNT <
UINT_MAX / sizeof(nsHTMLFramesetBorderFrame*),
"Should not overflow nsHTMLFramesetBorderFrame");
mVerBorders = MakeUnique<nsHTMLFramesetBorderFrame*[]>(
mNumCols); // 1 more than number of ver borders
for (int verX = 0; verX < mNumCols; verX++) mVerBorders[verX] = nullptr;
mHorBorders = MakeUnique<nsHTMLFramesetBorderFrame*[]>(
mNumRows); // 1 more than number of hor borders
for (int horX = 0; horX < mNumRows; horX++) mHorBorders[horX] = nullptr;
static_assert(NS_MAX_FRAMESET_SPEC_COUNT <
UINT_MAX / sizeof(int32_t) / NS_MAX_FRAMESET_SPEC_COUNT,
"Should not overflow numCells");
static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nsFrameborder) /
NS_MAX_FRAMESET_SPEC_COUNT,
"Should not overflow numCells");
static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nsBorderColor) /
NS_MAX_FRAMESET_SPEC_COUNT,
"Should not overflow numCells");
mChildFrameborder = MakeUnique<nsFrameborder[]>(numCells);
mChildBorderColors = MakeUnique<nsBorderColor[]>(numCells);
// create the children frames; skip content which isn't <frameset> or <frame>
mChildCount = 0; // number of <frame> or <frameset> children
FlattenedChildIterator children(mContent);
for (nsIContent* child = children.GetNextChild(); child;
child = children.GetNextChild()) {
if (mChildCount == numCells) {
// we have more <frame> or <frameset> than cells
// Clear the lazy bits in the remaining children. Also clear
// the restyle flags, like nsCSSFrameConstructor::ProcessChildren does.
for (; child; child = child->GetNextSibling()) {
child->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME);
}
break;
}
child->UnsetFlags(NODE_DESCENDANTS_NEED_FRAMES | NODE_NEEDS_FRAME);
// IMPORTANT: This must match the conditions in
// nsCSSFrameConstructor::ContentAppended/Inserted/Removed
if (!child->IsAnyOfHTMLElements(nsGkAtoms::frameset, nsGkAtoms::frame)) {
continue;
}
// FIXME(emilio): This doesn't even respect display: none, but that matches
// other browsers ;_;
//
// Maybe we should change that though.
RefPtr<ComputedStyle> kidStyle =
ServoStyleSet::ResolveServoStyle(*child->AsElement());
nsIFrame* frame;
if (child->IsHTMLElement(nsGkAtoms::frameset)) {
frame = NS_NewHTMLFramesetFrame(presShell, kidStyle);
nsHTMLFramesetFrame* childFrame = (nsHTMLFramesetFrame*)frame;
childFrame->SetParentFrameborder(frameborder);
childFrame->SetParentBorderWidth(borderWidth);
childFrame->SetParentBorderColor(borderColor);
frame->Init(child, this, nullptr);
mChildBorderColors[mChildCount].Set(childFrame->GetBorderColor());
} else { // frame
frame = NS_NewSubDocumentFrame(presShell, kidStyle);
frame->Init(child, this, nullptr);
mChildFrameborder[mChildCount] = GetFrameBorder(child);
mChildBorderColors[mChildCount].Set(GetBorderColor(child));
}
child->SetPrimaryFrame(frame);
mFrames.AppendFrame(nullptr, frame);
mChildCount++;
}
mNonBlankChildCount = mChildCount;
// add blank frames for frameset cells that had no content provided
for (int blankX = mChildCount; blankX < numCells; blankX++) {
RefPtr<ComputedStyle> pseudoComputedStyle;
pseudoComputedStyle =
presShell->StyleSet()->ResolveNonInheritingAnonymousBoxStyle(
PseudoStyleType::framesetBlank);
// XXX the blank frame is using the content of its parent - at some point it
// should just have null content, if we support that
nsHTMLFramesetBlankFrame* blankFrame = new (presShell)
nsHTMLFramesetBlankFrame(pseudoComputedStyle, PresContext());
blankFrame->Init(mContent, this, nullptr);
mFrames.AppendFrame(nullptr, blankFrame);
mChildBorderColors[mChildCount].Set(NO_COLOR);
mChildCount++;
}
mNonBorderChildCount = mChildCount;
}
void nsHTMLFramesetFrame::SetInitialChildList(ChildListID aListID,
nsFrameList& aChildList) {
// We do this weirdness where we create our child frames in Init(). On the
// other hand, we're going to get a SetInitialChildList() with an empty list
// and null list name after the frame constructor is done creating us. So
// just ignore that call.
if (aListID == kPrincipalList && aChildList.IsEmpty()) {
return;
}
nsContainerFrame::SetInitialChildList(aListID, aChildList);
}
// XXX should this try to allocate twips based on an even pixel boundary?
void nsHTMLFramesetFrame::Scale(nscoord aDesired, int32_t aNumIndicies,
int32_t* aIndicies, int32_t aNumItems,
int32_t* aItems) {
int32_t actual = 0;
int32_t i, j;
// get the actual total
for (i = 0; i < aNumIndicies; i++) {
j = aIndicies[i];
actual += aItems[j];
}
if (actual > 0) {
float factor = (float)aDesired / (float)actual;
actual = 0;
// scale the items up or down
for (i = 0; i < aNumIndicies; i++) {
j = aIndicies[i];
aItems[j] = NSToCoordRound((float)aItems[j] * factor);
actual += aItems[j];
}
} else if (aNumIndicies != 0) {
// All the specs say zero width, but we have to fill up space
// somehow. Distribute it equally.
nscoord width = NSToCoordRound((float)aDesired / (float)aNumIndicies);
actual = width * aNumIndicies;
for (i = 0; i < aNumIndicies; i++) {
aItems[aIndicies[i]] = width;
}
}
if (aNumIndicies > 0 && aDesired != actual) {
int32_t unit = (aDesired > actual) ? 1 : -1;
for (i = 0; (i < aNumIndicies) && (aDesired != actual); i++) {
j = aIndicies[i];
if (j < aNumItems) {
aItems[j] += unit;
actual += unit;
}
}
}
}
/**
* Translate the rows/cols specs into an array of integer sizes for
* each cell in the frameset. Sizes are allocated based on the priorities of the
* specifier - fixed sizes have the highest priority, percentage sizes have the
* next highest priority and relative sizes have the lowest.
*/
void nsHTMLFramesetFrame::CalculateRowCol(nsPresContext* aPresContext,
nscoord aSize, int32_t aNumSpecs,
const nsFramesetSpec* aSpecs,
nscoord* aValues) {
static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(int32_t),
"aNumSpecs maximum value is NS_MAX_FRAMESET_SPEC_COUNT");
int32_t fixedTotal = 0;
int32_t numFixed = 0;
auto fixed = MakeUnique<int32_t[]>(aNumSpecs);
int32_t numPercent = 0;
auto percent = MakeUnique<int32_t[]>(aNumSpecs);
int32_t relativeSums = 0;
int32_t numRelative = 0;
auto relative = MakeUnique<int32_t[]>(aNumSpecs);
if (MOZ_UNLIKELY(!fixed || !percent || !relative)) {
return; // NS_ERROR_OUT_OF_MEMORY
}
int32_t i, j;
// initialize the fixed, percent, relative indices, allocate the fixed sizes
// and zero the others
for (i = 0; i < aNumSpecs; i++) {
aValues[i] = 0;
switch (aSpecs[i].mUnit) {
case eFramesetUnit_Fixed:
aValues[i] = nsPresContext::CSSPixelsToAppUnits(aSpecs[i].mValue);
fixedTotal += aValues[i];
fixed[numFixed] = i;
numFixed++;
break;
case eFramesetUnit_Percent:
percent[numPercent] = i;
numPercent++;
break;
case eFramesetUnit_Relative:
relative[numRelative] = i;
numRelative++;
relativeSums += aSpecs[i].mValue;
break;
}
}
// scale the fixed sizes if they total too much (or too little and there
// aren't any percent or relative)
if ((fixedTotal > aSize) ||
((fixedTotal < aSize) && (0 == numPercent) && (0 == numRelative))) {
Scale(aSize, numFixed, fixed.get(), aNumSpecs, aValues);
return;
}
int32_t percentMax = aSize - fixedTotal;
int32_t percentTotal = 0;
// allocate the percentage sizes from what is left over from the fixed
// allocation
for (i = 0; i < numPercent; i++) {
j = percent[i];
aValues[j] =
NSToCoordRound((float)aSpecs[j].mValue * (float)aSize / 100.0f);
percentTotal += aValues[j];
}
// scale the percent sizes if they total too much (or too little and there
// aren't any relative)
if ((percentTotal > percentMax) ||
((percentTotal < percentMax) && (0 == numRelative))) {
Scale(percentMax, numPercent, percent.get(), aNumSpecs, aValues);
return;
}
int32_t relativeMax = percentMax - percentTotal;
int32_t relativeTotal = 0;
// allocate the relative sizes from what is left over from the percent
// allocation
for (i = 0; i < numRelative; i++) {
j = relative[i];
aValues[j] = NSToCoordRound((float)aSpecs[j].mValue * (float)relativeMax /
(float)relativeSums);
relativeTotal += aValues[j];
}
// scale the relative sizes if they take up too much or too little
if (relativeTotal != relativeMax) {
Scale(relativeMax, numRelative, relative.get(), aNumSpecs, aValues);
}
}
/**
* Translate the rows/cols integer sizes into an array of specs for
* each cell in the frameset. Reverse of CalculateRowCol() behaviour.
* This allows us to maintain the user size info through reflows.
*/
void nsHTMLFramesetFrame::GenerateRowCol(nsPresContext* aPresContext,
nscoord aSize, int32_t aNumSpecs,
const nsFramesetSpec* aSpecs,
nscoord* aValues, nsString& aNewAttr) {
int32_t i;
for (i = 0; i < aNumSpecs; i++) {
if (!aNewAttr.IsEmpty()) aNewAttr.Append(char16_t(','));
switch (aSpecs[i].mUnit) {
case eFramesetUnit_Fixed:
aNewAttr.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(aValues[i]));
break;
case eFramesetUnit_Percent: // XXX Only accurate to 1%, need 1 pixel
case eFramesetUnit_Relative:
// Add 0.5 to the percentage to make rounding work right.
aNewAttr.AppendInt(uint32_t((100.0 * aValues[i]) / aSize + 0.5));
aNewAttr.Append(char16_t('%'));
break;
}
}
}
int32_t nsHTMLFramesetFrame::GetBorderWidth(nsPresContext* aPresContext,
bool aTakeForcingIntoAccount) {
nsFrameborder frameborder = GetFrameBorder();
if (frameborder == eFrameborder_No) {
return 0;
}
nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::border);
if (attr) {
int32_t intVal = 0;
if (attr->Type() == nsAttrValue::eInteger) {
intVal = attr->GetIntegerValue();
if (intVal < 0) {
intVal = 0;
}
}
return nsPresContext::CSSPixelsToAppUnits(intVal);
}
}
if (mParentBorderWidth >= 0) {
return mParentBorderWidth;
}
return nsPresContext::CSSPixelsToAppUnits(DEFAULT_BORDER_WIDTH_PX);
}
void nsHTMLFramesetFrame::GetDesiredSize(nsPresContext* aPresContext,
const ReflowInput& aReflowInput,
ReflowOutput& aDesiredSize) {
WritingMode wm = aReflowInput.GetWritingMode();
LogicalSize desiredSize(wm);
nsHTMLFramesetFrame* framesetParent = do_QueryFrame(GetParent());
if (nullptr == framesetParent) {
if (aPresContext->IsPaginated()) {
// XXX This needs to be changed when framesets paginate properly
desiredSize.ISize(wm) = aReflowInput.AvailableISize();
desiredSize.BSize(wm) = aReflowInput.AvailableBSize();
} else {
LogicalSize area(wm, aPresContext->GetVisibleArea().Size());
desiredSize.ISize(wm) = area.ISize(wm);
desiredSize.BSize(wm) = area.BSize(wm);
}
} else {
LogicalSize size(wm);
framesetParent->GetSizeOfChild(this, wm, size);
desiredSize.ISize(wm) = size.ISize(wm);
desiredSize.BSize(wm) = size.BSize(wm);
}
aDesiredSize.SetSize(wm, desiredSize);
}
// only valid for non border children
void nsHTMLFramesetFrame::GetSizeOfChildAt(int32_t aIndexInParent,
WritingMode aWM, LogicalSize& aSize,
nsIntPoint& aCellIndex) {
int32_t row = aIndexInParent / mNumCols;
int32_t col = aIndexInParent -
(row * mNumCols); // remainder from dividing index by mNumCols
if ((row < mNumRows) && (col < mNumCols)) {
aSize.ISize(aWM) = mColSizes[col];
aSize.BSize(aWM) = mRowSizes[row];
aCellIndex.x = col;
aCellIndex.y = row;
} else {
aSize.SizeTo(aWM, 0, 0);
aCellIndex.x = aCellIndex.y = 0;
}
}
// only valid for non border children
void nsHTMLFramesetFrame::GetSizeOfChild(nsIFrame* aChild, WritingMode aWM,
LogicalSize& aSize) {
// Reflow only creates children frames for <frameset> and <frame> content.
// this assumption is used here
int i = 0;
for (nsIFrame* child : mFrames) {
if (aChild == child) {
nsIntPoint ignore;
GetSizeOfChildAt(i, aWM, aSize, ignore);
return;
}
i++;
}
aSize.SizeTo(aWM, 0, 0);
}
nsresult nsHTMLFramesetFrame::HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus) {
NS_ENSURE_ARG_POINTER(aEventStatus);
if (mDragger) {
// the nsFramesetBorderFrame has captured NS_MOUSE_DOWN
switch (aEvent->mMessage) {
case eMouseMove:
MouseDrag(aPresContext, aEvent);
break;
case eMouseUp:
if (aEvent->AsMouseEvent()->mButton == MouseButton::ePrimary) {
EndMouseDrag(aPresContext);
}
break;
default:
break;
}
*aEventStatus = nsEventStatus_eConsumeNoDefault;
} else {
*aEventStatus = nsEventStatus_eIgnore;
}
return NS_OK;
}
Maybe<nsIFrame::Cursor> nsHTMLFramesetFrame::GetCursor(const nsPoint&) {
auto kind = StyleCursorKind::Default;
if (mDragger) {
kind = mDragger->mVertical ? StyleCursorKind::EwResize
: StyleCursorKind::NsResize;
}
return Some(Cursor{kind, AllowCustomCursorImage::No});
}
void nsHTMLFramesetFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) {
BuildDisplayListForInline(aBuilder, aLists);
if (mDragger && aBuilder->IsForEventDelivery()) {
aLists.Content()->AppendNewToTop<nsDisplayEventReceiver>(aBuilder, this);
}
}
void nsHTMLFramesetFrame::ReflowPlaceChild(nsIFrame* aChild,
nsPresContext* aPresContext,
const ReflowInput& aReflowInput,
nsPoint& aOffset, nsSize& aSize,
nsIntPoint* aCellIndex) {
// reflow the child
ReflowInput reflowInput(aPresContext, aReflowInput, aChild,
LogicalSize(aChild->GetWritingMode(), aSize));
reflowInput.SetComputedWidth(std::max(
0,
aSize.width - reflowInput.ComputedPhysicalBorderPadding().LeftRight()));
reflowInput.SetComputedHeight(std::max(
0,
aSize.height - reflowInput.ComputedPhysicalBorderPadding().TopBottom()));
ReflowOutput reflowOutput(aReflowInput);
reflowOutput.Width() = aSize.width;
reflowOutput.Height() = aSize.height;
nsReflowStatus status;
ReflowChild(aChild, aPresContext, reflowOutput, reflowInput, aOffset.x,
aOffset.y, ReflowChildFlags::Default, status);
NS_ASSERTION(status.IsComplete(), "bad status");
// Place and size the child
reflowOutput.Width() = aSize.width;
reflowOutput.Height() = aSize.height;
FinishReflowChild(aChild, aPresContext, reflowOutput, &reflowInput, aOffset.x,
aOffset.y, ReflowChildFlags::Default);
}
static nsFrameborder GetFrameBorderHelper(nsGenericHTMLElement* aContent) {
if (nullptr != aContent) {
const nsAttrValue* attr = aContent->GetParsedAttr(nsGkAtoms::frameborder);
if (attr && attr->Type() == nsAttrValue::eEnum) {
switch (attr->GetEnumValue()) {
case NS_STYLE_FRAME_YES:
case NS_STYLE_FRAME_1:
return eFrameborder_Yes;
case NS_STYLE_FRAME_NO:
case NS_STYLE_FRAME_0:
return eFrameborder_No;
}
}
}
return eFrameborder_Notset;
}
nsFrameborder nsHTMLFramesetFrame::GetFrameBorder() {
nsFrameborder result = eFrameborder_Notset;
nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(mContent);
if (content) {
result = GetFrameBorderHelper(content);
}
if (eFrameborder_Notset == result) {
return mParentFrameborder;
}
return result;
}
nsFrameborder nsHTMLFramesetFrame::GetFrameBorder(nsIContent* aContent) {
nsFrameborder result = eFrameborder_Notset;
nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(aContent);
if (content) {
result = GetFrameBorderHelper(content);
}
if (eFrameborder_Notset == result) {
return GetFrameBorder();
}
return result;
}
nscolor nsHTMLFramesetFrame::GetBorderColor() {
nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::bordercolor);
if (attr) {
nscolor color;
if (attr->GetColorValue(color)) {
return color;
}
}
}
return mParentBorderColor;
}
nscolor nsHTMLFramesetFrame::GetBorderColor(nsIContent* aContent) {
nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(aContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::bordercolor);
if (attr) {
nscolor color;
if (attr->GetColorValue(color)) {
return color;
}
}
}
return GetBorderColor();
}
void nsHTMLFramesetFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) {
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsHTMLFramesetFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
mozilla::PresShell* presShell = aPresContext->PresShell();
ServoStyleSet* styleSet = presShell->StyleSet();
GetParent()->AddStateBits(NS_FRAME_CONTAINS_RELATIVE_BSIZE);
// printf("FramesetFrame2::Reflow %X (%d,%d) \n", this,
// aReflowInput.AvailableWidth(), aReflowInput.AvailableHeight());
// Always get the size so that the caller knows how big we are
GetDesiredSize(aPresContext, aReflowInput, aDesiredSize);
nscoord width = (aDesiredSize.Width() <= aReflowInput.AvailableWidth())
? aDesiredSize.Width()
: aReflowInput.AvailableWidth();
nscoord height = (aDesiredSize.Height() <= aReflowInput.AvailableHeight())
? aDesiredSize.Height()
: aReflowInput.AvailableHeight();
// We might be reflowed more than once with NS_FRAME_FIRST_REFLOW;
// that's allowed. (Though it will only happen for misuse of frameset
// that includes it within other content.) So measure firstTime by
// what we care about, which is whether we've processed the data we
// process below if firstTime is true.
MOZ_ASSERT(!mChildFrameborder == !mChildBorderColors);
bool firstTime = !!mChildFrameborder;
// subtract out the width of all of the potential borders. There are
// only borders between <frame>s. There are none on the edges (e.g the
// leftmost <frame> has no left border).
int32_t borderWidth = GetBorderWidth(aPresContext, true);
width -= (mNumCols - 1) * borderWidth;
if (width < 0) width = 0;
height -= (mNumRows - 1) * borderWidth;
if (height < 0) height = 0;
HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromNode(mContent);
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* rowSpecs = nullptr;
const nsFramesetSpec* colSpecs = nullptr;
int32_t rows = 0;
int32_t cols = 0;
ourContent->GetRowSpec(&rows, &rowSpecs);
ourContent->GetColSpec(&cols, &colSpecs);
// If the number of cols or rows has changed, the frame for the frameset
// will be re-created.
if (mNumRows != rows || mNumCols != cols) {
mDrag.UnSet();
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
return;
}
CalculateRowCol(aPresContext, width, mNumCols, colSpecs, mColSizes.get());
CalculateRowCol(aPresContext, height, mNumRows, rowSpecs, mRowSizes.get());
UniquePtr<bool[]> verBordersVis; // vertical borders visibility
UniquePtr<nscolor[]> verBorderColors;
UniquePtr<bool[]> horBordersVis; // horizontal borders visibility
UniquePtr<nscolor[]> horBorderColors;
nscolor borderColor = GetBorderColor();
nsFrameborder frameborder = GetFrameBorder();
if (firstTime) {
// Check for overflow in memory allocations using mNumCols and mNumRows
// which have a maxium value of NS_MAX_FRAMESET_SPEC_COUNT.
static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(bool),
"Check for overflow");
static_assert(NS_MAX_FRAMESET_SPEC_COUNT < UINT_MAX / sizeof(nscolor),
"Check for overflow");
verBordersVis = MakeUnique<bool[]>(mNumCols);
verBorderColors = MakeUnique<nscolor[]>(mNumCols);
for (int verX = 0; verX < mNumCols; verX++) {
verBordersVis[verX] = false;
verBorderColors[verX] = NO_COLOR;
}
horBordersVis = MakeUnique<bool[]>(mNumRows);
horBorderColors = MakeUnique<nscolor[]>(mNumRows);
for (int horX = 0; horX < mNumRows; horX++) {
horBordersVis[horX] = false;
horBorderColors[horX] = NO_COLOR;
}
}
// reflow the children
int32_t lastRow = 0;
int32_t lastCol = 0;
int32_t borderChildX = mNonBorderChildCount; // index of border children
nsHTMLFramesetBorderFrame* borderFrame = nullptr;
nsPoint offset(0, 0);
nsSize size, lastSize;
WritingMode wm = GetWritingMode();
LogicalSize logicalSize(wm);
nsIFrame* child = mFrames.FirstChild();
for (int32_t childX = 0; childX < mNonBorderChildCount; childX++) {
nsIntPoint cellIndex;
GetSizeOfChildAt(childX, wm, logicalSize, cellIndex);
size = logicalSize.GetPhysicalSize(wm);
if (lastRow != cellIndex.y) { // changed to next row
offset.x = 0;
offset.y += lastSize.height;
if (firstTime) { // create horizontal border
RefPtr<ComputedStyle> pseudoComputedStyle;
pseudoComputedStyle = styleSet->ResolveNonInheritingAnonymousBoxStyle(
PseudoStyleType::horizontalFramesetBorder);
borderFrame = new (presShell) nsHTMLFramesetBorderFrame(
pseudoComputedStyle, PresContext(), borderWidth, false, false);
borderFrame->Init(mContent, this, nullptr);
mChildCount++;
mFrames.AppendFrame(nullptr, borderFrame);
mHorBorders[cellIndex.y - 1] = borderFrame;
// set the neighbors for determining drag boundaries
borderFrame->mPrevNeighbor = lastRow;
borderFrame->mNextNeighbor = cellIndex.y;
} else {
borderFrame = (nsHTMLFramesetBorderFrame*)mFrames.FrameAt(borderChildX);
borderFrame->mWidth = borderWidth;
borderChildX++;
}
nsSize borderSize(aDesiredSize.Width(), borderWidth);
ReflowPlaceChild(borderFrame, aPresContext, aReflowInput, offset,
borderSize);
borderFrame = nullptr;
offset.y += borderWidth;
} else {
if (cellIndex.x > 0) { // moved to next col in same row
if (0 == cellIndex.y) { // in 1st row
if (firstTime) { // create vertical border
RefPtr<ComputedStyle> pseudoComputedStyle;
pseudoComputedStyle =
styleSet->ResolveNonInheritingAnonymousBoxStyle(
PseudoStyleType::verticalFramesetBorder);
borderFrame = new (presShell) nsHTMLFramesetBorderFrame(
pseudoComputedStyle, PresContext(), borderWidth, true, false);
borderFrame->Init(mContent, this, nullptr);
mChildCount++;
mFrames.AppendFrame(nullptr, borderFrame);
mVerBorders[cellIndex.x - 1] = borderFrame;
// set the neighbors for determining drag boundaries
borderFrame->mPrevNeighbor = lastCol;
borderFrame->mNextNeighbor = cellIndex.x;
} else {
borderFrame =
(nsHTMLFramesetBorderFrame*)mFrames.FrameAt(borderChildX);
borderFrame->mWidth = borderWidth;
borderChildX++;
}
nsSize borderSize(borderWidth, aDesiredSize.Height());
ReflowPlaceChild(borderFrame, aPresContext, aReflowInput, offset,
borderSize);
borderFrame = nullptr;
}
offset.x += borderWidth;
}
}
ReflowPlaceChild(child, aPresContext, aReflowInput, offset, size,
&cellIndex);
if (firstTime) {
int32_t childVis;
nsHTMLFramesetFrame* framesetFrame = do_QueryFrame(child);
if (framesetFrame) {
childVis = framesetFrame->mEdgeVisibility;
mChildBorderColors[childX] = framesetFrame->mEdgeColors;
} else if (child->IsSubDocumentFrame()) {
if (eFrameborder_Yes == mChildFrameborder[childX]) {
childVis = ALL_VIS;
} else if (eFrameborder_No == mChildFrameborder[childX]) {
childVis = NONE_VIS;
} else { // notset
childVis = (eFrameborder_No == frameborder) ? NONE_VIS : ALL_VIS;
}
} else { // blank
#ifdef DEBUG
nsHTMLFramesetBlankFrame* blank = do_QueryFrame(child);
MOZ_ASSERT(blank, "unexpected child frame type");
#endif
childVis = NONE_VIS;
}
nsBorderColor childColors = mChildBorderColors[childX];
// set the visibility, color of our edge borders based on children
if (0 == cellIndex.x) {
if (!(mEdgeVisibility & LEFT_VIS)) {
mEdgeVisibility |= (LEFT_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mLeft) {
mEdgeColors.mLeft = childColors.mLeft;
}
}
if (0 == cellIndex.y) {
if (!(mEdgeVisibility & TOP_VIS)) {
mEdgeVisibility |= (TOP_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mTop) {
mEdgeColors.mTop = childColors.mTop;
}
}
if (mNumCols - 1 == cellIndex.x) {
if (!(mEdgeVisibility & RIGHT_VIS)) {
mEdgeVisibility |= (RIGHT_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mRight) {
mEdgeColors.mRight = childColors.mRight;
}
}
if (mNumRows - 1 == cellIndex.y) {
if (!(mEdgeVisibility & BOTTOM_VIS)) {
mEdgeVisibility |= (BOTTOM_VIS & childVis);
}
if (NO_COLOR == mEdgeColors.mBottom) {
mEdgeColors.mBottom = childColors.mBottom;
}
}
// set the visibility of borders that the child may affect
if (childVis & RIGHT_VIS) {
verBordersVis[cellIndex.x] = true;
}
if (childVis & BOTTOM_VIS) {
horBordersVis[cellIndex.y] = true;
}
if ((cellIndex.x > 0) && (childVis & LEFT_VIS)) {
verBordersVis[cellIndex.x - 1] = true;
}
if ((cellIndex.y > 0) && (childVis & TOP_VIS)) {
horBordersVis[cellIndex.y - 1] = true;
}
// set the colors of borders that the child may affect
if (NO_COLOR == verBorderColors[cellIndex.x]) {
verBorderColors[cellIndex.x] = mChildBorderColors[childX].mRight;
}
if (NO_COLOR == horBorderColors[cellIndex.y]) {
horBorderColors[cellIndex.y] = mChildBorderColors[childX].mBottom;
}
if ((cellIndex.x > 0) && (NO_COLOR == verBorderColors[cellIndex.x - 1])) {
verBorderColors[cellIndex.x - 1] = mChildBorderColors[childX].mLeft;
}
if ((cellIndex.y > 0) && (NO_COLOR == horBorderColors[cellIndex.y - 1])) {
horBorderColors[cellIndex.y - 1] = mChildBorderColors[childX].mTop;
}
}
lastRow = cellIndex.y;
lastCol = cellIndex.x;
lastSize = size;
offset.x += size.width;
child = child->GetNextSibling();
}
if (firstTime) {
nscolor childColor;
// set the visibility, color, mouse sensitivity of borders
for (int verX = 0; verX < mNumCols - 1; verX++) {
if (mVerBorders[verX]) {
mVerBorders[verX]->SetVisibility(verBordersVis[verX]);
SetBorderResize(mVerBorders[verX]);
childColor = (NO_COLOR == verBorderColors[verX])
? borderColor
: verBorderColors[verX];
mVerBorders[verX]->SetColor(childColor);
}
}
for (int horX = 0; horX < mNumRows - 1; horX++) {
if (mHorBorders[horX]) {
mHorBorders[horX]->SetVisibility(horBordersVis[horX]);
SetBorderResize(mHorBorders[horX]);
childColor = (NO_COLOR == horBorderColors[horX])
? borderColor
: horBorderColors[horX];
mHorBorders[horX]->SetColor(childColor);
}
}
mChildFrameborder.reset();
mChildBorderColors.reset();
}
mDrag.UnSet();
aDesiredSize.SetOverflowAreasToDesiredBounds();
FinishAndStoreOverflow(&aDesiredSize);
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
}
#ifdef DEBUG_FRAME_DUMP
nsresult nsHTMLFramesetFrame::GetFrameName(nsAString& aResult) const {
return MakeFrameName(u"Frameset"_ns, aResult);
}
#endif
bool nsHTMLFramesetFrame::CanResize(bool aVertical, bool aLeft) {
int32_t childX;
int32_t startX;
if (aVertical) {
startX = (aLeft) ? 0 : mNumCols - 1;
for (childX = startX; childX < mNonBorderChildCount; childX += mNumCols) {
if (!CanChildResize(aVertical, aLeft, childX)) {
return false;
}
}
} else {
startX = (aLeft) ? 0 : (mNumRows - 1) * mNumCols;
int32_t endX = startX + mNumCols;
for (childX = startX; childX < endX; childX++) {
if (!CanChildResize(aVertical, aLeft, childX)) {
return false;
}
}
}
return true;
}
bool nsHTMLFramesetFrame::GetNoResize(nsIFrame* aChildFrame) {
nsIContent* content = aChildFrame->GetContent();
return content && content->IsElement() &&
content->AsElement()->HasAttr(kNameSpaceID_None, nsGkAtoms::noresize);
}
bool nsHTMLFramesetFrame::CanChildResize(bool aVertical, bool aLeft,
int32_t aChildX) {
nsIFrame* child = mFrames.FrameAt(aChildX);
nsHTMLFramesetFrame* frameset = do_QueryFrame(child);
return frameset ? frameset->CanResize(aVertical, aLeft) : !GetNoResize(child);
}
// This calculates and sets the resizability of all border frames
void nsHTMLFramesetFrame::RecalculateBorderResize() {
if (!mContent) {
return;
}
static_assert(
NS_MAX_FRAMESET_SPEC_COUNT < INT32_MAX / NS_MAX_FRAMESET_SPEC_COUNT,
"Check for overflow");
static_assert(NS_MAX_FRAMESET_SPEC_COUNT <
UINT_MAX / sizeof(int32_t) / NS_MAX_FRAMESET_SPEC_COUNT,
"Check for overflow");
// set the visibility and mouse sensitivity of borders
int32_t verX;
for (verX = 0; verX < mNumCols - 1; verX++) {
if (mVerBorders[verX]) {
mVerBorders[verX]->mCanResize = true;
SetBorderResize(mVerBorders[verX]);
}
}
int32_t horX;
for (horX = 0; horX < mNumRows - 1; horX++) {
if (mHorBorders[horX]) {
mHorBorders[horX]->mCanResize = true;
SetBorderResize(mHorBorders[horX]);
}
}
}
void nsHTMLFramesetFrame::SetBorderResize(
nsHTMLFramesetBorderFrame* aBorderFrame) {
if (aBorderFrame->mVertical) {
for (int rowX = 0; rowX < mNumRows; rowX++) {
int32_t childX = aBorderFrame->mPrevNeighbor + (rowX * mNumCols);
if (!CanChildResize(true, false, childX) ||
!CanChildResize(true, true, childX + 1)) {
aBorderFrame->mCanResize = false;
}
}
} else {
int32_t childX = aBorderFrame->mPrevNeighbor * mNumCols;
int32_t endX = childX + mNumCols;
for (; childX < endX; childX++) {
if (!CanChildResize(false, false, childX)) {
aBorderFrame->mCanResize = false;
}
}
endX = endX + mNumCols;
for (; childX < endX; childX++) {
if (!CanChildResize(false, true, childX)) {
aBorderFrame->mCanResize = false;
}
}
}
}
void nsHTMLFramesetFrame::StartMouseDrag(nsPresContext* aPresContext,
nsHTMLFramesetBorderFrame* aBorder,
WidgetGUIEvent* aEvent) {
#if 0
int32_t index;
IndexOf(aBorder, index);
NS_ASSERTION((nullptr != aBorder) && (index >= 0), "invalid dragger");
#endif
PresShell::SetCapturingContent(GetContent(),
CaptureFlags::IgnoreAllowedState);
mDragger = aBorder;
mFirstDragPoint = aEvent->mRefPoint;
// Store the original frame sizes
if (mDragger->mVertical) {
mPrevNeighborOrigSize = mColSizes[mDragger->mPrevNeighbor];
mNextNeighborOrigSize = mColSizes[mDragger->mNextNeighbor];
} else {
mPrevNeighborOrigSize = mRowSizes[mDragger->mPrevNeighbor];
mNextNeighborOrigSize = mRowSizes[mDragger->mNextNeighbor];
}
gDragInProgress = true;
}
void nsHTMLFramesetFrame::MouseDrag(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent) {
// if the capture ended, reset the drag state
if (PresShell::GetCapturingContent() != GetContent()) {
mDragger = nullptr;
gDragInProgress = false;
return;
}
int32_t change; // measured positive from left-to-right or top-to-bottom
AutoWeakFrame weakFrame(this);
if (mDragger->mVertical) {
change = aPresContext->DevPixelsToAppUnits(aEvent->mRefPoint.x -
mFirstDragPoint.x);
if (change > mNextNeighborOrigSize - mMinDrag) {
change = mNextNeighborOrigSize - mMinDrag;
} else if (change <= mMinDrag - mPrevNeighborOrigSize) {
change = mMinDrag - mPrevNeighborOrigSize;
}
mColSizes[mDragger->mPrevNeighbor] = mPrevNeighborOrigSize + change;
mColSizes[mDragger->mNextNeighbor] = mNextNeighborOrigSize - change;
if (change != 0) {
// Recompute the specs from the new sizes.
nscoord width =
mRect.width - (mNumCols - 1) * GetBorderWidth(aPresContext, true);
HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromNode(mContent);
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* colSpecs = nullptr;
ourContent->GetColSpec(&mNumCols, &colSpecs);
nsAutoString newColAttr;
GenerateRowCol(aPresContext, width, mNumCols, colSpecs, mColSizes.get(),
newColAttr);
// Setting the attr will trigger a reflow
mContent->AsElement()->SetAttr(kNameSpaceID_None, nsGkAtoms::cols,
newColAttr, true);
}
} else {
change = aPresContext->DevPixelsToAppUnits(aEvent->mRefPoint.y -
mFirstDragPoint.y);
if (change > mNextNeighborOrigSize - mMinDrag) {
change = mNextNeighborOrigSize - mMinDrag;
} else if (change <= mMinDrag - mPrevNeighborOrigSize) {
change = mMinDrag - mPrevNeighborOrigSize;
}
mRowSizes[mDragger->mPrevNeighbor] = mPrevNeighborOrigSize + change;
mRowSizes[mDragger->mNextNeighbor] = mNextNeighborOrigSize - change;
if (change != 0) {
// Recompute the specs from the new sizes.
nscoord height =
mRect.height - (mNumRows - 1) * GetBorderWidth(aPresContext, true);
HTMLFrameSetElement* ourContent = HTMLFrameSetElement::FromNode(mContent);
NS_ASSERTION(ourContent, "Someone gave us a broken frameset element!");
const nsFramesetSpec* rowSpecs = nullptr;
ourContent->GetRowSpec(&mNumRows, &rowSpecs);
nsAutoString newRowAttr;
GenerateRowCol(aPresContext, height, mNumRows, rowSpecs, mRowSizes.get(),
newRowAttr);
// Setting the attr will trigger a reflow
mContent->AsElement()->SetAttr(kNameSpaceID_None, nsGkAtoms::rows,
newRowAttr, true);
}
}
NS_ENSURE_TRUE_VOID(weakFrame.IsAlive());
if (change != 0) {
mDrag.Reset(mDragger->mVertical, mDragger->mPrevNeighbor, change, this);
}
}
void nsHTMLFramesetFrame::EndMouseDrag(nsPresContext* aPresContext) {
PresShell::ReleaseCapturingContent();
mDragger = nullptr;
gDragInProgress = false;
}
nsIFrame* NS_NewHTMLFramesetFrame(PresShell* aPresShell,
ComputedStyle* aStyle) {
#ifdef DEBUG
const nsStyleDisplay* disp = aStyle->StyleDisplay();
NS_ASSERTION(!disp->IsAbsolutelyPositionedStyle() && !disp->IsFloatingStyle(),
"Framesets should not be positioned and should not float");
#endif
return new (aPresShell)
nsHTMLFramesetFrame(aStyle, aPresShell->GetPresContext());
}
NS_IMPL_FRAMEARENA_HELPERS(nsHTMLFramesetFrame)
/*******************************************************************************
* nsHTMLFramesetBorderFrame
******************************************************************************/
nsHTMLFramesetBorderFrame::nsHTMLFramesetBorderFrame(
ComputedStyle* aStyle, nsPresContext* aPresContext, int32_t aWidth,
bool aVertical, bool aVisibility)
: nsLeafFrame(aStyle, aPresContext, kClassID),
mWidth(aWidth),
mVertical(aVertical),
mVisibility(aVisibility) {
mCanResize = true;
mColor = NO_COLOR;
mPrevNeighbor = 0;
mNextNeighbor = 0;
}
nsHTMLFramesetBorderFrame::~nsHTMLFramesetBorderFrame() {
// printf("nsHTMLFramesetBorderFrame destructor %p \n", this);
}
NS_IMPL_FRAMEARENA_HELPERS(nsHTMLFramesetBorderFrame)
nscoord nsHTMLFramesetBorderFrame::GetIntrinsicISize() {
// No intrinsic width
return 0;
}
nscoord nsHTMLFramesetBorderFrame::GetIntrinsicBSize() {
// No intrinsic height
return 0;
}
void nsHTMLFramesetBorderFrame::SetVisibility(bool aVisibility) {
mVisibility = aVisibility;
}
void nsHTMLFramesetBorderFrame::SetColor(nscolor aColor) { mColor = aColor; }
void nsHTMLFramesetBorderFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) {
DO_GLOBAL_REFLOW_COUNT("nsHTMLFramesetBorderFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
// Override Reflow(), since we don't want to deal with what our
// computed values are.
SizeToAvailSize(aReflowInput, aDesiredSize);
aDesiredSize.SetOverflowAreasToDesiredBounds();
}
class nsDisplayFramesetBorder : public nsPaintedDisplayItem {
public:
nsDisplayFramesetBorder(nsDisplayListBuilder* aBuilder,
nsHTMLFramesetBorderFrame* aFrame)
: nsPaintedDisplayItem(aBuilder, aFrame) {
MOZ_COUNT_CTOR(nsDisplayFramesetBorder);
}
MOZ_COUNTED_DTOR_OVERRIDE(nsDisplayFramesetBorder)
// REVIEW: see old GetFrameForPoint
// Receives events in its bounds
virtual void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
HitTestState* aState,
nsTArray<nsIFrame*>* aOutFrames) override {
aOutFrames->AppendElement(mFrame);
}
virtual void Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) override;
NS_DISPLAY_DECL_NAME("FramesetBorder", TYPE_FRAMESET_BORDER)
};
void nsDisplayFramesetBorder::Paint(nsDisplayListBuilder* aBuilder,
gfxContext* aCtx) {
static_cast<nsHTMLFramesetBorderFrame*>(mFrame)->PaintBorder(
aCtx->GetDrawTarget(), ToReferenceFrame());
}
void nsHTMLFramesetBorderFrame::BuildDisplayList(
nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists) {
aLists.Content()->AppendNewToTop<nsDisplayFramesetBorder>(aBuilder, this);
}
void nsHTMLFramesetBorderFrame::PaintBorder(DrawTarget* aDrawTarget,
nsPoint aPt) {
nscoord widthInPixels = nsPresContext::AppUnitsToIntCSSPixels(mWidth);
nscoord pixelWidth = nsPresContext::CSSPixelsToAppUnits(1);
if (widthInPixels <= 0) return;
ColorPattern bgColor(ToDeviceColor(LookAndFeel::GetColor(
LookAndFeel::ColorID::WidgetBackground, NS_RGB(200, 200, 200))));
ColorPattern fgColor(ToDeviceColor(LookAndFeel::GetColor(
LookAndFeel::ColorID::WidgetForeground, NS_RGB(0, 0, 0))));
ColorPattern hltColor(ToDeviceColor(LookAndFeel::GetColor(
LookAndFeel::ColorID::Widget3DHighlight, NS_RGB(255, 255, 255))));
ColorPattern sdwColor(ToDeviceColor(LookAndFeel::GetColor(
LookAndFeel::ColorID::Widget3DShadow, NS_RGB(128, 128, 128))));
ColorPattern color(ToDeviceColor(NS_RGB(255, 255, 255))); // default to white
if (mVisibility) {
color =
(NO_COLOR == mColor) ? bgColor : ColorPattern(ToDeviceColor(mColor));
}
int32_t appUnitsPerDevPixel = PresContext()->AppUnitsPerDevPixel();
Point toRefFrame = NSPointToPoint(aPt, appUnitsPerDevPixel);
AutoRestoreTransform autoRestoreTransform(aDrawTarget);
aDrawTarget->SetTransform(
aDrawTarget->GetTransform().PreTranslate(toRefFrame));
nsPoint start(0, 0);
nsPoint end = mVertical ? nsPoint(0, mRect.height) : nsPoint(mRect.width, 0);
// draw grey or white first
for (int i = 0; i < widthInPixels; i++) {
StrokeLineWithSnapping(start, end, appUnitsPerDevPixel, *aDrawTarget,
color);
if (mVertical) {
start.x += pixelWidth;
end.x = start.x;
} else {
start.y += pixelWidth;
end.y = start.y;
}
}
if (!mVisibility) return;
if (widthInPixels >= 5) {
start.x = (mVertical) ? pixelWidth : 0;
start.y = (mVertical) ? 0 : pixelWidth;
end.x = (mVertical) ? start.x : mRect.width;
end.y = (mVertical) ? mRect.height : start.y;
StrokeLineWithSnapping(start, end, appUnitsPerDevPixel, *aDrawTarget,
hltColor);
}
if (widthInPixels >= 2) {
start.x = (mVertical) ? mRect.width - (2 * pixelWidth) : 0;
start.y = (mVertical) ? 0 : mRect.height - (2 * pixelWidth);
end.x = (mVertical) ? start.x : mRect.width;
end.y = (mVertical) ? mRect.height : start.y;
StrokeLineWithSnapping(start, end, appUnitsPerDevPixel, *aDrawTarget,
sdwColor);
}
if (widthInPixels >= 1) {
start.x = (mVertical) ? mRect.width - pixelWidth : 0;
start.y = (mVertical) ? 0 : mRect.height - pixelWidth;
end.x = (mVertical) ? start.x : mRect.width;
end.y = (mVertical) ? mRect.height : start.y;
StrokeLineWithSnapping(start, end, appUnitsPerDevPixel, *aDrawTarget,
fgColor);
}
}
nsresult nsHTMLFramesetBorderFrame::HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus) {
NS_ENSURE_ARG_POINTER(aEventStatus);
*aEventStatus = nsEventStatus_eIgnore;
// XXX Mouse setting logic removed. The remaining logic should also move.
if (!mCanResize) {
return NS_OK;
}
if (aEvent->mMessage == eMouseDown &&
aEvent->AsMouseEvent()->mButton == MouseButton::ePrimary) {
nsHTMLFramesetFrame* parentFrame = do_QueryFrame(GetParent());
if (parentFrame) {
parentFrame->StartMouseDrag(aPresContext, this, aEvent);
*aEventStatus = nsEventStatus_eConsumeNoDefault;
}
}
return NS_OK;
}
Maybe<nsIFrame::Cursor> nsHTMLFramesetBorderFrame::GetCursor(const nsPoint&) {
auto kind = StyleCursorKind::Default;
if (mCanResize) {
kind = mVertical ? StyleCursorKind::EwResize : StyleCursorKind::NsResize;
}
return Some(Cursor{kind, AllowCustomCursorImage::No});
}
#ifdef DEBUG_FRAME_DUMP
nsresult nsHTMLFramesetBorderFrame::GetFrameName(nsAString& aResult) const {
return MakeFrameName(u"FramesetBorder"_ns, aResult);
}
#endif
/*******************************************************************************
* nsHTMLFramesetBlankFrame
******************************************************************************/
NS_QUERYFRAME_HEAD(nsHTMLFramesetBlankFrame)
NS_QUERYFRAME_ENTRY(nsHTMLFramesetBlankFrame)
NS_QUERYFRAME_TAIL_INHERITING(nsLeafFrame)
NS_IMPL_FRAMEARENA_HELPERS(nsHTMLFramesetBlankFrame)
nsHTMLFramesetBlankFrame::~nsHTMLFramesetBlankFrame() {
// printf("nsHTMLFramesetBlankFrame destructor %p \n", this);
}
nscoord nsHTMLFramesetBlankFrame::GetIntrinsicISize() {
// No intrinsic width
return 0;
}
nscoord nsHTMLFramesetBlankFrame::GetIntrinsicBSize() {
// No intrinsic height
return 0;
}
void nsHTMLFramesetBlankFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) {
DO_GLOBAL_REFLOW_COUNT("nsHTMLFramesetBlankFrame");
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
// Override Reflow(), since we don't want to deal with what our
// computed values are.
SizeToAvailSize(aReflowInput, aDesiredSize);
aDesiredSize.SetOverflowAreasToDesiredBounds();
}
class nsDisplayFramesetBlank : public nsPaintedDisplayItem {
public:
nsDisplayFramesetBlank(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame)
: nsPaintedDisplayItem(aBuilder, aFrame) {
MOZ_COUNT_CTOR(nsDisplayFramesetBlank);
}
MOZ_COUNTED_DTOR_OVERRIDE(nsDisplayFramesetBlank)
virtual void Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) override;
NS_DISPLAY_DECL_NAME("FramesetBlank", TYPE_FRAMESET_BLANK)
};
void nsDisplayFramesetBlank::Paint(nsDisplayListBuilder* aBuilder,
gfxContext* aCtx) {
DrawTarget* drawTarget = aCtx->GetDrawTarget();
int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
Rect rect =
NSRectToSnappedRect(GetPaintRect(), appUnitsPerDevPixel, *drawTarget);
ColorPattern white(ToDeviceColor(sRGBColor::OpaqueWhite()));
drawTarget->FillRect(rect, white);
}
void nsHTMLFramesetBlankFrame::BuildDisplayList(
nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists) {
aLists.Content()->AppendNewToTop<nsDisplayFramesetBlank>(aBuilder, this);
}
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