зеркало из https://github.com/mozilla/gecko-dev.git
742 строки
28 KiB
C++
742 строки
28 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):
|
|
* Michael Ventnor <m.ventnor@gmail.com>
|
|
*
|
|
* 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 ***** */
|
|
|
|
/* base class #2 for rendering objects that have child lists */
|
|
|
|
#include "nsHTMLContainerFrame.h"
|
|
#include "nsFirstLetterFrame.h"
|
|
#include "nsIRenderingContext.h"
|
|
#include "nsPresContext.h"
|
|
#include "nsIPresShell.h"
|
|
#include "nsStyleContext.h"
|
|
#include "nsStyleConsts.h"
|
|
#include "nsIContent.h"
|
|
#include "nsGkAtoms.h"
|
|
#include "nsLayoutUtils.h"
|
|
#include "nsCSSAnonBoxes.h"
|
|
#include "nsILinkHandler.h"
|
|
#include "nsGUIEvent.h"
|
|
#include "nsIDocument.h"
|
|
#include "nsIURL.h"
|
|
#include "nsPlaceholderFrame.h"
|
|
#include "nsHTMLParts.h"
|
|
#include "nsIView.h"
|
|
#include "nsIViewManager.h"
|
|
#include "nsIDOMEvent.h"
|
|
#include "nsIScrollableView.h"
|
|
#include "nsWidgetsCID.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIDeviceContext.h"
|
|
#include "nsIFontMetrics.h"
|
|
#include "nsIThebesFontMetrics.h"
|
|
#include "gfxFont.h"
|
|
#include "nsCSSFrameConstructor.h"
|
|
#include "nsDisplayList.h"
|
|
#include "nsBlockFrame.h"
|
|
#include "nsLineBox.h"
|
|
#include "nsDisplayList.h"
|
|
#include "nsCSSRendering.h"
|
|
|
|
class nsDisplayTextDecoration : public nsDisplayItem {
|
|
public:
|
|
nsDisplayTextDecoration(nsHTMLContainerFrame* aFrame, PRUint8 aDecoration,
|
|
nscolor aColor, nsLineBox* aLine)
|
|
: nsDisplayItem(aFrame), mLine(aLine), mColor(aColor),
|
|
mDecoration(aDecoration) {
|
|
MOZ_COUNT_CTOR(nsDisplayTextDecoration);
|
|
}
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
virtual ~nsDisplayTextDecoration() {
|
|
MOZ_COUNT_DTOR(nsDisplayTextDecoration);
|
|
}
|
|
#endif
|
|
|
|
virtual void Paint(nsDisplayListBuilder* aBuilder, nsIRenderingContext* aCtx,
|
|
const nsRect& aDirtyRect);
|
|
virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder);
|
|
NS_DISPLAY_DECL_NAME("TextDecoration")
|
|
private:
|
|
nsLineBox* mLine;
|
|
nscolor mColor;
|
|
PRUint8 mDecoration;
|
|
};
|
|
|
|
void
|
|
nsDisplayTextDecoration::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsIRenderingContext* aCtx,
|
|
const nsRect& aDirtyRect)
|
|
{
|
|
nsCOMPtr<nsIFontMetrics> fm;
|
|
nsLayoutUtils::GetFontMetricsForFrame(mFrame, getter_AddRefs(fm));
|
|
nsIThebesFontMetrics* tfm = static_cast<nsIThebesFontMetrics*>(fm.get());
|
|
gfxFontGroup* fontGroup = tfm->GetThebesFontGroup();
|
|
gfxFont* firstFont = fontGroup->GetFontAt(0);
|
|
if (!firstFont)
|
|
return; // OOM
|
|
const gfxFont::Metrics& metrics = firstFont->GetMetrics();
|
|
|
|
gfxFloat ascent;
|
|
// The ascent of first-letter frame's text may not be the same as the ascent
|
|
// of the font metrics. Because that may use the tight box of the actual
|
|
// glyph.
|
|
if (mFrame->GetType() == nsGkAtoms::letterFrame) {
|
|
// Note that nsFirstLetterFrame::GetFirstLetterBaseline() returns
|
|
// |border-top + padding-top + ascent|. But we only need the ascent value.
|
|
// Because they will be added in PaintTextDecorationLine.
|
|
nsFirstLetterFrame* letterFrame = static_cast<nsFirstLetterFrame*>(mFrame);
|
|
nscoord tmp = letterFrame->GetFirstLetterBaseline();
|
|
tmp -= letterFrame->GetUsedBorderAndPadding().top;
|
|
ascent = letterFrame->PresContext()->AppUnitsToGfxUnits(tmp);
|
|
} else {
|
|
ascent = metrics.maxAscent;
|
|
}
|
|
|
|
nsPoint pt = aBuilder->ToReferenceFrame(mFrame);
|
|
|
|
nsHTMLContainerFrame* f = static_cast<nsHTMLContainerFrame*>(mFrame);
|
|
if (mDecoration == NS_STYLE_TEXT_DECORATION_UNDERLINE) {
|
|
gfxFloat underlineOffset = fontGroup->GetUnderlineOffset();
|
|
f->PaintTextDecorationLine(aCtx->ThebesContext(), pt, mLine, mColor,
|
|
underlineOffset, ascent,
|
|
metrics.underlineSize, mDecoration);
|
|
} else if (mDecoration == NS_STYLE_TEXT_DECORATION_OVERLINE) {
|
|
f->PaintTextDecorationLine(aCtx->ThebesContext(), pt, mLine, mColor,
|
|
metrics.maxAscent, ascent,
|
|
metrics.underlineSize, mDecoration);
|
|
} else {
|
|
f->PaintTextDecorationLine(aCtx->ThebesContext(), pt, mLine, mColor,
|
|
metrics.strikeoutOffset, ascent,
|
|
metrics.strikeoutSize, mDecoration);
|
|
}
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayTextDecoration::GetBounds(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
return mFrame->GetOverflowRect() + aBuilder->ToReferenceFrame(mFrame);
|
|
}
|
|
|
|
class nsDisplayTextShadow : public nsDisplayItem {
|
|
public:
|
|
nsDisplayTextShadow(nsHTMLContainerFrame* aFrame, const PRUint8 aDecoration,
|
|
const nscolor& aColor, nsLineBox* aLine,
|
|
const nscoord& aBlurRadius, const gfxPoint& aOffset)
|
|
: nsDisplayItem(aFrame), mLine(aLine), mColor(aColor),
|
|
mDecorationFlags(aDecoration),
|
|
mBlurRadius(aBlurRadius), mOffset(aOffset) {
|
|
MOZ_COUNT_CTOR(nsDisplayTextShadow);
|
|
}
|
|
virtual ~nsDisplayTextShadow() {
|
|
MOZ_COUNT_DTOR(nsDisplayTextShadow);
|
|
}
|
|
|
|
virtual void Paint(nsDisplayListBuilder* aBuilder, nsIRenderingContext* aCtx,
|
|
const nsRect& aDirtyRect);
|
|
virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder);
|
|
NS_DISPLAY_DECL_NAME("TextShadow")
|
|
private:
|
|
nsLineBox* mLine;
|
|
nscolor mColor;
|
|
PRUint8 mDecorationFlags;
|
|
nscoord mBlurRadius; // App units
|
|
gfxPoint mOffset; // App units
|
|
};
|
|
|
|
void
|
|
nsDisplayTextShadow::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsIRenderingContext* aCtx,
|
|
const nsRect& aDirtyRect)
|
|
{
|
|
mBlurRadius = PR_MAX(mBlurRadius, 0);
|
|
|
|
nsCOMPtr<nsIFontMetrics> fm;
|
|
nsLayoutUtils::GetFontMetricsForFrame(mFrame, getter_AddRefs(fm));
|
|
nsIThebesFontMetrics* tfm = static_cast<nsIThebesFontMetrics*>(fm.get());
|
|
gfxFontGroup* fontGroup = tfm->GetThebesFontGroup();
|
|
gfxFont* firstFont = fontGroup->GetFontAt(0);
|
|
if (!firstFont)
|
|
return; // OOM
|
|
const gfxFont::Metrics& metrics = firstFont->GetMetrics();
|
|
nsPoint pt = aBuilder->ToReferenceFrame(mFrame) + nsPoint(mOffset.x, mOffset.y);
|
|
|
|
nsHTMLContainerFrame* f = static_cast<nsHTMLContainerFrame*>(mFrame);
|
|
nsMargin bp = f->GetUsedBorderAndPadding();
|
|
nscoord innerWidthInAppUnits = (mFrame->GetSize().width - bp.LeftRight());
|
|
|
|
gfxRect shadowRect = gfxRect(pt.x, pt.y, innerWidthInAppUnits, mFrame->GetSize().height);
|
|
gfxContext* thebesCtx = aCtx->ThebesContext();
|
|
|
|
gfxRect dirtyRect(aDirtyRect.x, aDirtyRect.y, aDirtyRect.width, aDirtyRect.height);
|
|
|
|
nsContextBoxBlur contextBoxBlur;
|
|
gfxContext* shadowCtx = contextBoxBlur.Init(shadowRect, mBlurRadius,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel(),
|
|
thebesCtx, dirtyRect);
|
|
if (!shadowCtx)
|
|
return;
|
|
|
|
thebesCtx->Save();
|
|
thebesCtx->NewPath();
|
|
thebesCtx->SetColor(gfxRGBA(mColor));
|
|
|
|
if (mDecorationFlags & NS_STYLE_TEXT_DECORATION_UNDERLINE) {
|
|
gfxFloat underlineOffset = fontGroup->GetUnderlineOffset();
|
|
f->PaintTextDecorationLine(shadowCtx, pt, mLine, mColor,
|
|
underlineOffset, metrics.maxAscent,
|
|
metrics.underlineSize, NS_STYLE_TEXT_DECORATION_UNDERLINE);
|
|
}
|
|
if (mDecorationFlags & NS_STYLE_TEXT_DECORATION_OVERLINE) {
|
|
f->PaintTextDecorationLine(shadowCtx, pt, mLine, mColor,
|
|
metrics.maxAscent, metrics.maxAscent,
|
|
metrics.underlineSize, NS_STYLE_TEXT_DECORATION_OVERLINE);
|
|
}
|
|
if (mDecorationFlags & NS_STYLE_TEXT_DECORATION_LINE_THROUGH) {
|
|
f->PaintTextDecorationLine(shadowCtx, pt, mLine, mColor,
|
|
metrics.strikeoutOffset, metrics.maxAscent,
|
|
metrics.strikeoutSize, NS_STYLE_TEXT_DECORATION_LINE_THROUGH);
|
|
}
|
|
|
|
contextBoxBlur.DoPaint();
|
|
thebesCtx->Restore();
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayTextShadow::GetBounds(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
// Shadows are always painted in the overflow rect
|
|
return mFrame->GetOverflowRect() + aBuilder->ToReferenceFrame(mFrame);
|
|
}
|
|
|
|
nsresult
|
|
nsHTMLContainerFrame::DisplayTextDecorations(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aBelowTextDecorations,
|
|
nsDisplayList* aAboveTextDecorations,
|
|
nsLineBox* aLine)
|
|
{
|
|
if (eCompatibility_NavQuirks == PresContext()->CompatibilityMode())
|
|
return NS_OK;
|
|
if (!IsVisibleForPainting(aBuilder))
|
|
return NS_OK;
|
|
|
|
// Do standards mode painting of 'text-decoration's: under+overline
|
|
// behind children, line-through in front. For Quirks mode, see
|
|
// nsTextFrame::PaintTextDecorations. (See bug 1777.)
|
|
nscolor underColor, overColor, strikeColor;
|
|
PRUint8 decorations = NS_STYLE_TEXT_DECORATION_NONE;
|
|
GetTextDecorations(PresContext(), aLine != nsnull, decorations, underColor,
|
|
overColor, strikeColor);
|
|
|
|
if (decorations == NS_STYLE_TEXT_DECORATION_NONE)
|
|
return NS_OK;
|
|
|
|
// The text-shadow spec says that any text decorations must also have a shadow applied to
|
|
// it. So draw the shadows as part of the display list.
|
|
const nsStyleText* textStyle = GetStyleText();
|
|
|
|
if (textStyle->mTextShadow) {
|
|
for (PRUint32 i = textStyle->mTextShadow->Length(); i > 0; --i) {
|
|
nsCSSShadowItem* shadow = textStyle->mTextShadow->ShadowAt(i - 1);
|
|
nscoord blurRadius = shadow->mRadius;
|
|
nscolor shadowColor;
|
|
|
|
if (shadow->mHasColor)
|
|
shadowColor = shadow->mColor;
|
|
else
|
|
shadowColor = GetStyleColor()->mColor;
|
|
|
|
gfxPoint offset = gfxPoint(shadow->mXOffset, shadow->mYOffset);
|
|
|
|
// Add it to the display list so it is painted underneath the text and all decorations
|
|
nsresult rv = aBelowTextDecorations->AppendNewToTop(new (aBuilder)
|
|
nsDisplayTextShadow(this, decorations, shadowColor, aLine, blurRadius, offset));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
}
|
|
|
|
if (decorations & NS_STYLE_TEXT_DECORATION_UNDERLINE) {
|
|
nsresult rv = aBelowTextDecorations->AppendNewToTop(new (aBuilder)
|
|
nsDisplayTextDecoration(this, NS_STYLE_TEXT_DECORATION_UNDERLINE, underColor, aLine));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
if (decorations & NS_STYLE_TEXT_DECORATION_OVERLINE) {
|
|
nsresult rv = aBelowTextDecorations->AppendNewToTop(new (aBuilder)
|
|
nsDisplayTextDecoration(this, NS_STYLE_TEXT_DECORATION_OVERLINE, overColor, aLine));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
if (decorations & NS_STYLE_TEXT_DECORATION_LINE_THROUGH) {
|
|
nsresult rv = aAboveTextDecorations->AppendNewToTop(new (aBuilder)
|
|
nsDisplayTextDecoration(this, NS_STYLE_TEXT_DECORATION_LINE_THROUGH, strikeColor, aLine));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsHTMLContainerFrame::DisplayTextDecorationsAndChildren(
|
|
nsDisplayListBuilder* aBuilder, const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists)
|
|
{
|
|
nsDisplayList aboveChildrenDecorations;
|
|
nsresult rv = DisplayTextDecorations(aBuilder, aLists.Content(),
|
|
&aboveChildrenDecorations, nsnull);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = BuildDisplayListForNonBlockChildren(aBuilder, aDirtyRect, aLists,
|
|
DISPLAY_CHILD_INLINE);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
aLists.Content()->AppendToTop(&aboveChildrenDecorations);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsHTMLContainerFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists) {
|
|
nsresult rv = DisplayBorderBackgroundOutline(aBuilder, aLists);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return DisplayTextDecorationsAndChildren(aBuilder, aDirtyRect, aLists);
|
|
}
|
|
|
|
static PRBool
|
|
HasTextFrameDescendantOrInFlow(nsIFrame* aFrame);
|
|
|
|
/*virtual*/ void
|
|
nsHTMLContainerFrame::PaintTextDecorationLine(
|
|
gfxContext* aCtx,
|
|
const nsPoint& aPt,
|
|
nsLineBox* aLine,
|
|
nscolor aColor,
|
|
gfxFloat aOffset,
|
|
gfxFloat aAscent,
|
|
gfxFloat aSize,
|
|
const PRUint8 aDecoration)
|
|
{
|
|
NS_ASSERTION(!aLine, "Should not have passed a linebox to a non-block frame");
|
|
nsMargin bp = GetUsedBorderAndPadding();
|
|
PRIntn skip = GetSkipSides();
|
|
NS_FOR_CSS_SIDES(side) {
|
|
if (skip & (1 << side)) {
|
|
bp.side(side) = 0;
|
|
}
|
|
}
|
|
nscoord innerWidth = mRect.width - bp.left - bp.right;
|
|
gfxPoint pt(PresContext()->AppUnitsToGfxUnits(bp.left + aPt.x),
|
|
PresContext()->AppUnitsToGfxUnits(bp.top + aPt.y));
|
|
gfxSize size(PresContext()->AppUnitsToGfxUnits(innerWidth), aSize);
|
|
nsCSSRendering::PaintDecorationLine(aCtx, aColor, pt, size, aAscent, aOffset,
|
|
aDecoration, nsCSSRendering::DECORATION_STYLE_SOLID);
|
|
}
|
|
|
|
void
|
|
nsHTMLContainerFrame::GetTextDecorations(nsPresContext* aPresContext,
|
|
PRBool aIsBlock,
|
|
PRUint8& aDecorations,
|
|
nscolor& aUnderColor,
|
|
nscolor& aOverColor,
|
|
nscolor& aStrikeColor)
|
|
{
|
|
aDecorations = NS_STYLE_TEXT_DECORATION_NONE;
|
|
if (!mStyleContext->HasTextDecorations()) {
|
|
// This is a necessary, but not sufficient, condition for text
|
|
// decorations.
|
|
return;
|
|
}
|
|
|
|
// A mask of all possible decorations.
|
|
PRUint8 decorMask = NS_STYLE_TEXT_DECORATION_UNDERLINE |
|
|
NS_STYLE_TEXT_DECORATION_OVERLINE |
|
|
NS_STYLE_TEXT_DECORATION_LINE_THROUGH;
|
|
|
|
if (!aIsBlock) {
|
|
aDecorations = GetStyleTextReset()->mTextDecoration & decorMask;
|
|
if (aDecorations) {
|
|
const nsStyleColor* styleColor = GetStyleColor();
|
|
aUnderColor = styleColor->mColor;
|
|
aOverColor = styleColor->mColor;
|
|
aStrikeColor = styleColor->mColor;
|
|
}
|
|
}
|
|
else {
|
|
// walk tree
|
|
for (nsIFrame *frame = this; frame && decorMask; frame = frame->GetParent()) {
|
|
// find text-decorations. "Inherit" from parent *block* frames
|
|
|
|
nsStyleContext* styleContext = frame->GetStyleContext();
|
|
const nsStyleDisplay* styleDisplay = styleContext->GetStyleDisplay();
|
|
if (!styleDisplay->IsBlockInside() &&
|
|
styleDisplay->mDisplay != NS_STYLE_DISPLAY_TABLE_CELL &&
|
|
styleDisplay->mDisplay != NS_STYLE_DISPLAY_TABLE_CAPTION) {
|
|
// If an inline frame is discovered while walking up the tree,
|
|
// we should stop according to CSS3 draft. CSS2 is rather vague
|
|
// about this.
|
|
break;
|
|
}
|
|
|
|
const nsStyleTextReset* styleText = styleContext->GetStyleTextReset();
|
|
PRUint8 decors = decorMask & styleText->mTextDecoration;
|
|
if (decors) {
|
|
// A *new* text-decoration is found.
|
|
nscolor color = styleContext->GetStyleColor()->mColor;
|
|
|
|
if (NS_STYLE_TEXT_DECORATION_UNDERLINE & decors) {
|
|
aUnderColor = color;
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_UNDERLINE;
|
|
aDecorations |= NS_STYLE_TEXT_DECORATION_UNDERLINE;
|
|
}
|
|
if (NS_STYLE_TEXT_DECORATION_OVERLINE & decors) {
|
|
aOverColor = color;
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_OVERLINE;
|
|
aDecorations |= NS_STYLE_TEXT_DECORATION_OVERLINE;
|
|
}
|
|
if (NS_STYLE_TEXT_DECORATION_LINE_THROUGH & decors) {
|
|
aStrikeColor = color;
|
|
decorMask &= ~NS_STYLE_TEXT_DECORATION_LINE_THROUGH;
|
|
aDecorations |= NS_STYLE_TEXT_DECORATION_LINE_THROUGH;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aDecorations) {
|
|
// If this frame contains no text, we're required to ignore this property
|
|
if (!HasTextFrameDescendantOrInFlow(this)) {
|
|
aDecorations = NS_STYLE_TEXT_DECORATION_NONE;
|
|
}
|
|
}
|
|
}
|
|
|
|
static PRBool
|
|
HasTextFrameDescendant(nsIFrame* aParent)
|
|
{
|
|
for (nsIFrame* kid = aParent->GetFirstChild(nsnull); kid;
|
|
kid = kid->GetNextSibling())
|
|
{
|
|
if (kid->GetType() == nsGkAtoms::textFrame) {
|
|
// This is only a candidate. We need to determine if this text
|
|
// frame is empty, as in containing only (non-pre) whitespace.
|
|
// See bug 20163.
|
|
if (!kid->IsEmpty()) {
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
if (HasTextFrameDescendant(kid)) {
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
static PRBool
|
|
HasTextFrameDescendantOrInFlow(nsIFrame* aFrame)
|
|
{
|
|
for (nsIFrame *f = aFrame->GetFirstInFlow(); f; f = f->GetNextInFlow()) {
|
|
if (HasTextFrameDescendant(f))
|
|
return PR_TRUE;
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
/**
|
|
* Create a next-in-flow for aFrame. Will return the newly created
|
|
* frame in aNextInFlowResult <b>if and only if</b> a new frame is
|
|
* created; otherwise nsnull is returned in aNextInFlowResult.
|
|
*/
|
|
nsresult
|
|
nsHTMLContainerFrame::CreateNextInFlow(nsPresContext* aPresContext,
|
|
nsIFrame* aOuterFrame,
|
|
nsIFrame* aFrame,
|
|
nsIFrame*& aNextInFlowResult)
|
|
{
|
|
aNextInFlowResult = nsnull;
|
|
|
|
nsIFrame* nextInFlow = aFrame->GetNextInFlow();
|
|
if (nsnull == nextInFlow) {
|
|
// Create a continuation frame for the child frame and insert it
|
|
// into our lines child list.
|
|
nsIFrame* nextFrame = aFrame->GetNextSibling();
|
|
|
|
nsresult rv = aPresContext->PresShell()->FrameConstructor()->
|
|
CreateContinuingFrame(aPresContext, aFrame, aOuterFrame, &nextInFlow);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
aFrame->SetNextSibling(nextInFlow);
|
|
nextInFlow->SetNextSibling(nextFrame);
|
|
|
|
NS_FRAME_LOG(NS_FRAME_TRACE_NEW_FRAMES,
|
|
("nsHTMLContainerFrame::CreateNextInFlow: frame=%p nextInFlow=%p",
|
|
aFrame, nextInFlow));
|
|
|
|
aNextInFlowResult = nextInFlow;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsresult
|
|
ReparentFrameViewTo(nsIFrame* aFrame,
|
|
nsIViewManager* aViewManager,
|
|
nsIView* aNewParentView,
|
|
nsIView* aOldParentView)
|
|
{
|
|
|
|
// XXX What to do about placeholder views for "position: fixed" elements?
|
|
// They should be reparented too.
|
|
|
|
// Does aFrame have a view?
|
|
if (aFrame->HasView()) {
|
|
#ifdef MOZ_XUL
|
|
if (aFrame->GetType() == nsGkAtoms::menuPopupFrame) {
|
|
// This view must be parented by the root view, don't reparent it.
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
nsIView* view = aFrame->GetView();
|
|
// Verify that the current parent view is what we think it is
|
|
//nsIView* parentView;
|
|
//NS_ASSERTION(parentView == aOldParentView, "unexpected parent view");
|
|
|
|
aViewManager->RemoveChild(view);
|
|
|
|
// The view will remember the Z-order and other attributes that have been set on it.
|
|
nsIView* insertBefore = nsLayoutUtils::FindSiblingViewFor(aNewParentView, aFrame);
|
|
aViewManager->InsertChild(aNewParentView, view, insertBefore, insertBefore != nsnull);
|
|
} else {
|
|
PRInt32 listIndex = 0;
|
|
nsIAtom* listName = nsnull;
|
|
// This loop iterates through every child list name, and also
|
|
// executes once with listName == nsnull.
|
|
do {
|
|
// Iterate the child frames, and check each child frame to see if it has
|
|
// a view
|
|
nsIFrame* childFrame = aFrame->GetFirstChild(listName);
|
|
for (; childFrame; childFrame = childFrame->GetNextSibling()) {
|
|
ReparentFrameViewTo(childFrame, aViewManager,
|
|
aNewParentView, aOldParentView);
|
|
}
|
|
listName = aFrame->GetAdditionalChildListName(listIndex++);
|
|
} while (listName);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsHTMLContainerFrame::ReparentFrameView(nsPresContext* aPresContext,
|
|
nsIFrame* aChildFrame,
|
|
nsIFrame* aOldParentFrame,
|
|
nsIFrame* aNewParentFrame)
|
|
{
|
|
NS_PRECONDITION(aChildFrame, "null child frame pointer");
|
|
NS_PRECONDITION(aOldParentFrame, "null old parent frame pointer");
|
|
NS_PRECONDITION(aNewParentFrame, "null new parent frame pointer");
|
|
NS_PRECONDITION(aOldParentFrame != aNewParentFrame, "same old and new parent frame");
|
|
|
|
// See if either the old parent frame or the new parent frame have a view
|
|
while (!aOldParentFrame->HasView() && !aNewParentFrame->HasView()) {
|
|
// Walk up both the old parent frame and the new parent frame nodes
|
|
// stopping when we either find a common parent or views for one
|
|
// or both of the frames.
|
|
//
|
|
// This works well in the common case where we push/pull and the old parent
|
|
// frame and the new parent frame are part of the same flow. They will
|
|
// typically be the same distance (height wise) from the
|
|
aOldParentFrame = aOldParentFrame->GetParent();
|
|
aNewParentFrame = aNewParentFrame->GetParent();
|
|
|
|
// We should never walk all the way to the root frame without finding
|
|
// a view
|
|
NS_ASSERTION(aOldParentFrame && aNewParentFrame, "didn't find view");
|
|
|
|
// See if we reached a common ancestor
|
|
if (aOldParentFrame == aNewParentFrame) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// See if we found a common parent frame
|
|
if (aOldParentFrame == aNewParentFrame) {
|
|
// We found a common parent and there are no views between the old parent
|
|
// and the common parent or the new parent frame and the common parent.
|
|
// Because neither the old parent frame nor the new parent frame have views,
|
|
// then any child views don't need reparenting
|
|
return NS_OK;
|
|
}
|
|
|
|
// We found views for one or both of the ancestor frames before we
|
|
// found a common ancestor.
|
|
nsIView* oldParentView = aOldParentFrame->GetClosestView();
|
|
nsIView* newParentView = aNewParentFrame->GetClosestView();
|
|
|
|
// See if the old parent frame and the new parent frame are in the
|
|
// same view sub-hierarchy. If they are then we don't have to do
|
|
// anything
|
|
if (oldParentView != newParentView) {
|
|
// They're not so we need to reparent any child views
|
|
return ReparentFrameViewTo(aChildFrame, oldParentView->GetViewManager(), newParentView,
|
|
oldParentView);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsHTMLContainerFrame::ReparentFrameViewList(nsPresContext* aPresContext,
|
|
const nsFrameList& aChildFrameList,
|
|
nsIFrame* aOldParentFrame,
|
|
nsIFrame* aNewParentFrame)
|
|
{
|
|
NS_PRECONDITION(aChildFrameList.NotEmpty(), "empty child frame list");
|
|
NS_PRECONDITION(aOldParentFrame, "null old parent frame pointer");
|
|
NS_PRECONDITION(aNewParentFrame, "null new parent frame pointer");
|
|
NS_PRECONDITION(aOldParentFrame != aNewParentFrame, "same old and new parent frame");
|
|
|
|
// See if either the old parent frame or the new parent frame have a view
|
|
while (!aOldParentFrame->HasView() && !aNewParentFrame->HasView()) {
|
|
// Walk up both the old parent frame and the new parent frame nodes
|
|
// stopping when we either find a common parent or views for one
|
|
// or both of the frames.
|
|
//
|
|
// This works well in the common case where we push/pull and the old parent
|
|
// frame and the new parent frame are part of the same flow. They will
|
|
// typically be the same distance (height wise) from the
|
|
aOldParentFrame = aOldParentFrame->GetParent();
|
|
aNewParentFrame = aNewParentFrame->GetParent();
|
|
|
|
// We should never walk all the way to the root frame without finding
|
|
// a view
|
|
NS_ASSERTION(aOldParentFrame && aNewParentFrame, "didn't find view");
|
|
|
|
// See if we reached a common ancestor
|
|
if (aOldParentFrame == aNewParentFrame) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
// See if we found a common parent frame
|
|
if (aOldParentFrame == aNewParentFrame) {
|
|
// We found a common parent and there are no views between the old parent
|
|
// and the common parent or the new parent frame and the common parent.
|
|
// Because neither the old parent frame nor the new parent frame have views,
|
|
// then any child views don't need reparenting
|
|
return NS_OK;
|
|
}
|
|
|
|
// We found views for one or both of the ancestor frames before we
|
|
// found a common ancestor.
|
|
nsIView* oldParentView = aOldParentFrame->GetClosestView();
|
|
nsIView* newParentView = aNewParentFrame->GetClosestView();
|
|
|
|
// See if the old parent frame and the new parent frame are in the
|
|
// same view sub-hierarchy. If they are then we don't have to do
|
|
// anything
|
|
if (oldParentView != newParentView) {
|
|
nsIViewManager* viewManager = oldParentView->GetViewManager();
|
|
|
|
// They're not so we need to reparent any child views
|
|
for (nsFrameList::Enumerator e(aChildFrameList); !e.AtEnd(); e.Next()) {
|
|
ReparentFrameViewTo(e.get(), viewManager, newParentView, oldParentView);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsHTMLContainerFrame::CreateViewForFrame(nsIFrame* aFrame,
|
|
PRBool aForce)
|
|
{
|
|
if (aFrame->HasView()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
// If we don't yet have a view, see if we need a view
|
|
if (!(aForce || FrameNeedsView(aFrame))) {
|
|
// don't need a view
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIView* parentView = aFrame->GetParent()->GetParentViewForChildFrame(aFrame);
|
|
NS_ASSERTION(parentView, "no parent with view");
|
|
|
|
nsIViewManager* viewManager = parentView->GetViewManager();
|
|
NS_ASSERTION(viewManager, "null view manager");
|
|
|
|
// Create a view
|
|
nsIView* view = viewManager->CreateView(aFrame->GetRect(), parentView);
|
|
if (!view)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
SyncFrameViewProperties(aFrame->PresContext(), aFrame, nsnull, view);
|
|
|
|
// Insert the view into the view hierarchy. If the parent view is a
|
|
// scrolling view we need to do this differently
|
|
nsIScrollableView* scrollingView = parentView->ToScrollableView();
|
|
if (scrollingView) {
|
|
scrollingView->SetScrolledView(view);
|
|
} else {
|
|
nsIView* insertBefore = nsLayoutUtils::FindSiblingViewFor(parentView, aFrame);
|
|
// we insert this view 'above' the insertBefore view, unless insertBefore is null,
|
|
// in which case we want to call with aAbove == PR_FALSE to insert at the beginning
|
|
// in document order
|
|
viewManager->InsertChild(parentView, view, insertBefore, insertBefore != nsnull);
|
|
}
|
|
|
|
// REVIEW: Don't create a widget for fixed-pos elements anymore.
|
|
// ComputeRepaintRegionForCopy will calculate the right area to repaint
|
|
// when we scroll.
|
|
// Reparent views on any child frames (or their descendants) to this
|
|
// view. We can just call ReparentFrameViewTo on this frame because
|
|
// we know this frame has no view, so it will crawl the children. Also,
|
|
// we know that any descendants with views must have 'parentView' as their
|
|
// parent view.
|
|
ReparentFrameViewTo(aFrame, viewManager, view, parentView);
|
|
|
|
// Remember our view
|
|
aFrame->SetView(view);
|
|
|
|
NS_FRAME_LOG(NS_FRAME_TRACE_CALLS,
|
|
("nsHTMLContainerFrame::CreateViewForFrame: frame=%p view=%p",
|
|
aFrame));
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(nsHTMLContainerFrame)
|