mirror of
https://github.com/mozilla/gecko-dev.git
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734 lines
20 KiB
C++
734 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsString.h"
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#include "nsUnitConversion.h"
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#include "nsIContent.h"
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#include "nsIPresContext.h"
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#include "nsIStyleRule.h"
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#include "nsISupportsArray.h"
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#include "nsCRT.h"
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#include "nsIFrame.h"
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//#define DEBUG_REFS
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static NS_DEFINE_IID(kStyleFontSID, NS_STYLEFONT_SID);
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static NS_DEFINE_IID(kStyleColorSID, NS_STYLECOLOR_SID);
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static NS_DEFINE_IID(kStyleSpacingSID, NS_STYLESPACING_SID);
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static NS_DEFINE_IID(kStyleListSID, NS_STYLELIST_SID);
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static NS_DEFINE_IID(kStylePositionSID, NS_STYLEPOSITION_SID);
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static NS_DEFINE_IID(kStyleTextSID, NS_STYLETEXT_SID);
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static NS_DEFINE_IID(kStyleDisplaySID, NS_STYLEDISPLAY_SID);
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static NS_DEFINE_IID(kStyleTableSID, NS_STYLETABLE_SID);
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static NS_DEFINE_IID(kIStyleContextIID, NS_ISTYLECONTEXT_IID);
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// --------------------
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// nsStyleFont
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//
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nsStyleFont::nsStyleFont(const nsFont& aFont)
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: mFont(aFont)
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{ }
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nsStyleFont::~nsStyleFont(void) { }
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struct StyleFontImpl : public nsStyleFont {
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StyleFontImpl(const nsFont& aFont)
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: nsStyleFont(aFont)
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{}
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void InheritFrom(const nsStyleFont& aCopy);
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private: // These are not allowed
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StyleFontImpl(const StyleFontImpl& aOther);
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StyleFontImpl& operator=(const StyleFontImpl& aOther);
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};
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void StyleFontImpl::InheritFrom(const nsStyleFont& aCopy)
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{
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mFont = aCopy.mFont;
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mThreeD = aCopy.mThreeD;
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}
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// --------------------
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// nsStyleColor
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//
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nsStyleColor::nsStyleColor(void) { }
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nsStyleColor::~nsStyleColor(void) { }
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struct StyleColorImpl: public nsStyleColor {
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StyleColorImpl(void)
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{
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mBackgroundAttachment = NS_STYLE_BG_ATTACHMENT_SCROLL;
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mBackgroundFlags = NS_STYLE_BG_COLOR_TRANSPARENT;
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mBackgroundRepeat = NS_STYLE_BG_REPEAT_XY;
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mBackgroundColor = NS_RGB(192,192,192);
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mCursor = NS_STYLE_CURSOR_INHERIT;
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}
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void InheritFrom(const nsStyleColor& aCopy);
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private: // These are not allowed
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StyleColorImpl(const StyleColorImpl& aOther);
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StyleColorImpl& operator=(const StyleColorImpl& aOther);
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};
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void StyleColorImpl::InheritFrom(const nsStyleColor& aCopy)
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{
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mColor = aCopy.mColor;
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}
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// --------------------
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// nsStyleSpacing
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//
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nsStyleSpacing::nsStyleSpacing(void)
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: mMargin(),
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mPadding(),
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mBorder(),
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mHasCachedMargin(PR_FALSE),
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mHasCachedPadding(PR_FALSE),
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mHasCachedBorder(PR_FALSE)
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{
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mBorderStyle[0] = NS_STYLE_BORDER_STYLE_NONE;
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mBorderStyle[1] = NS_STYLE_BORDER_STYLE_NONE;
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mBorderStyle[2] = NS_STYLE_BORDER_STYLE_NONE;
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mBorderStyle[3] = NS_STYLE_BORDER_STYLE_NONE;
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mBorderColor[0] = NS_RGB(0, 0, 0);
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mBorderColor[1] = NS_RGB(0, 0, 0);
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mBorderColor[2] = NS_RGB(0, 0, 0);
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mBorderColor[3] = NS_RGB(0, 0, 0);
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}
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#define NS_SPACING_MARGIN 0
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#define NS_SPACING_PADDING 1
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#define NS_SPACING_BORDER 2
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static nscoord CalcSideFor(const nsIFrame* aFrame, const nsStyleCoord& aCoord,
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PRUint8 aSpacing, PRUint8 aSide,
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const nscoord* aEnumTable, PRInt32 aNumEnums)
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{
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nscoord result = 0;
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switch (aCoord.GetUnit()) {
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case eStyleUnit_Auto:
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// XXX need to call back to frame to compute
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NS_NOTYETIMPLEMENTED("auto value");
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break;
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case eStyleUnit_Inherit:
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nsIFrame* parentFrame;
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aFrame->GetGeometricParent(parentFrame); // XXX may not be direct parent...
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if (nsnull != parentFrame) {
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nsIStyleContext* parentContext;
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parentFrame->GetStyleContext(nsnull, parentContext);
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if (nsnull != parentContext) {
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nsStyleSpacing* parentSpacing = (nsStyleSpacing*)parentContext->GetData(kStyleSpacingSID);
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nsMargin parentMargin;
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switch (aSpacing) {
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case NS_SPACING_MARGIN: parentSpacing->CalcMarginFor(parentFrame, parentMargin);
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break;
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case NS_SPACING_PADDING: parentSpacing->CalcPaddingFor(parentFrame, parentMargin);
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break;
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case NS_SPACING_BORDER: parentSpacing->CalcBorderFor(parentFrame, parentMargin);
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break;
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}
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switch (aSide) {
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case NS_SIDE_LEFT: result = parentMargin.left; break;
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case NS_SIDE_TOP: result = parentMargin.top; break;
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case NS_SIDE_RIGHT: result = parentMargin.right; break;
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case NS_SIDE_BOTTOM: result = parentMargin.bottom; break;
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}
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NS_RELEASE(parentContext);
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}
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}
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case eStyleUnit_Percent:
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// XXX call frame to get percent base, do the math
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NS_NOTYETIMPLEMENTED("percent value");
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break;
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case eStyleUnit_Coord:
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result = aCoord.GetCoordValue();
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break;
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case eStyleUnit_Enumerated:
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if (nsnull != aEnumTable) {
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PRInt32 value = aCoord.GetIntValue();
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if ((0 <= value) && (value < aNumEnums)) {
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return aEnumTable[aCoord.GetIntValue()];
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}
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}
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break;
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case eStyleUnit_Null:
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case eStyleUnit_Normal:
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case eStyleUnit_Integer:
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case eStyleUnit_Proportional:
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default:
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result = 0;
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break;
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}
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return result;
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}
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static void CalcSidesFor(const nsIFrame* aFrame, const nsStyleSides& aSides,
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PRUint8 aSpacing,
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const nscoord* aEnumTable, PRInt32 aNumEnums,
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nsMargin& aResult)
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{
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nsStyleCoord coord;
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aResult.left = CalcSideFor(aFrame, aSides.GetLeft(coord), aSpacing, NS_SIDE_LEFT,
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aEnumTable, aNumEnums);
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aResult.top = CalcSideFor(aFrame, aSides.GetTop(coord), aSpacing, NS_SIDE_TOP,
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aEnumTable, aNumEnums);
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aResult.right = CalcSideFor(aFrame, aSides.GetRight(coord), aSpacing, NS_SIDE_RIGHT,
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aEnumTable, aNumEnums);
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aResult.bottom = CalcSideFor(aFrame, aSides.GetBottom(coord), aSpacing, NS_SIDE_BOTTOM,
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aEnumTable, aNumEnums);
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}
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void nsStyleSpacing::CalcMarginFor(const nsIFrame* aFrame, nsMargin& aMargin) const
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{
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if (mHasCachedMargin) {
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aMargin = mCachedMargin;
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}
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else {
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CalcSidesFor(aFrame, mMargin, NS_SPACING_MARGIN, nsnull, 0, aMargin);
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}
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}
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void nsStyleSpacing::CalcPaddingFor(const nsIFrame* aFrame, nsMargin& aPadding) const
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{
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if (mHasCachedPadding) {
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aPadding = mCachedPadding;
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}
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else {
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CalcSidesFor(aFrame, mPadding, NS_SPACING_PADDING, nsnull, 0, aPadding);
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}
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}
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static const nscoord kBorderWidths[3] =
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{ NS_POINTS_TO_TWIPS_INT(1),
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NS_POINTS_TO_TWIPS_INT(3),
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NS_POINTS_TO_TWIPS_INT(5) };
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void nsStyleSpacing::CalcBorderFor(const nsIFrame* aFrame, nsMargin& aBorder) const
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{
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if (mHasCachedBorder) {
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aBorder = mCachedBorder;
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}
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else {
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CalcSidesFor(aFrame, mBorder, NS_SPACING_BORDER, kBorderWidths, 3, aBorder);
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}
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}
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void nsStyleSpacing::CalcBorderPaddingFor(const nsIFrame* aFrame, nsMargin& aBorderPadding) const
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{
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if (mHasCachedPadding && mHasCachedBorder) {
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aBorderPadding = mCachedBorderPadding;
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}
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else {
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nsMargin border;
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CalcBorderFor(aFrame, border);
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CalcPaddingFor(aFrame, aBorderPadding);
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aBorderPadding += border;
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}
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}
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struct StyleSpacingImpl: public nsStyleSpacing {
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StyleSpacingImpl(void)
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: nsStyleSpacing()
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{}
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void InheritFrom(const nsStyleSpacing& aCopy);
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void RecalcData(nsIPresContext* aPresContext);
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};
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void StyleSpacingImpl::InheritFrom(const nsStyleSpacing& aCopy)
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{
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// spacing values not inherited
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}
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inline PRBool IsFixedUnit(nsStyleUnit aUnit, PRBool aEnumOK)
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{
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return PRBool((aUnit == eStyleUnit_Null) ||
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(aUnit == eStyleUnit_Coord) ||
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(aEnumOK && (aUnit == eStyleUnit_Enumerated)));
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}
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static PRBool IsFixedData(const nsStyleSides& aSides, PRBool aEnumOK)
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{
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return PRBool(IsFixedUnit(aSides.GetLeftUnit(), aEnumOK) &&
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IsFixedUnit(aSides.GetTopUnit(), aEnumOK) &&
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IsFixedUnit(aSides.GetRightUnit(), aEnumOK) &&
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IsFixedUnit(aSides.GetBottomUnit(), aEnumOK));
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}
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static nscoord CalcCoord(const nsStyleCoord& aCoord,
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const nscoord* aEnumTable,
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PRInt32 aNumEnums)
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{
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switch (aCoord.GetUnit()) {
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case eStyleUnit_Null:
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return 0;
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case eStyleUnit_Coord:
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return aCoord.GetCoordValue();
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case eStyleUnit_Enumerated:
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if (nsnull != aEnumTable) {
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PRInt32 value = aCoord.GetIntValue();
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if ((0 <= value) && (value < aNumEnums)) {
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return aEnumTable[aCoord.GetIntValue()];
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}
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}
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break;
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default:
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NS_ERROR("bad unit type");
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break;
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}
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return 0;
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}
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void StyleSpacingImpl::RecalcData(nsIPresContext* aPresContext)
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{
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if (IsFixedData(mMargin, PR_FALSE)) {
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nsStyleCoord coord;
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mCachedMargin.left = CalcCoord(mMargin.GetLeft(coord), nsnull, 0);
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mCachedMargin.top = CalcCoord(mMargin.GetTop(coord), nsnull, 0);
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mCachedMargin.right = CalcCoord(mMargin.GetRight(coord), nsnull, 0);
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mCachedMargin.bottom = CalcCoord(mMargin.GetBottom(coord), nsnull, 0);
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mHasCachedMargin = PR_TRUE;
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}
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else {
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mHasCachedMargin = PR_FALSE;
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}
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if (IsFixedData(mPadding, PR_FALSE)) {
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nsStyleCoord coord;
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mCachedPadding.left = CalcCoord(mPadding.GetLeft(coord), nsnull, 0);
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mCachedPadding.top = CalcCoord(mPadding.GetTop(coord), nsnull, 0);
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mCachedPadding.right = CalcCoord(mPadding.GetRight(coord), nsnull, 0);
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mCachedPadding.bottom = CalcCoord(mPadding.GetBottom(coord), nsnull, 0);
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mHasCachedPadding = PR_TRUE;
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}
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else {
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mHasCachedPadding = PR_FALSE;
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}
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if (IsFixedData(mBorder, PR_TRUE)) {
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nsStyleCoord coord;
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mCachedBorder.left = CalcCoord(mBorder.GetLeft(coord), kBorderWidths, 3);
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mCachedBorder.top = CalcCoord(mBorder.GetTop(coord), kBorderWidths, 3);
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mCachedBorder.right = CalcCoord(mBorder.GetRight(coord), kBorderWidths, 3);
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mCachedBorder.bottom = CalcCoord(mBorder.GetBottom(coord), kBorderWidths, 3);
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mHasCachedPadding = PR_TRUE;
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}
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else {
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mHasCachedPadding = PR_FALSE;
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}
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if (mHasCachedBorder && mHasCachedPadding) {
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mCachedBorderPadding = mCachedPadding;
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mCachedBorderPadding += mCachedBorder;
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}
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// XXX fixup missing border colors
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}
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// --------------------
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// nsStyleList
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//
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nsStyleList::nsStyleList(void) { }
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nsStyleList::~nsStyleList(void) { }
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struct StyleListImpl: public nsStyleList {
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StyleListImpl(void)
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{
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mListStyleType = NS_STYLE_LIST_STYLE_BASIC;
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mListStylePosition = NS_STYLE_LIST_STYLE_POSITION_OUTSIDE;
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}
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void InheritFrom(const nsStyleList& aCopy);
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};
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void StyleListImpl::InheritFrom(const nsStyleList& aCopy)
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{
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mListStyleType = aCopy.mListStyleType;
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mListStyleImage = aCopy.mListStyleImage;
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mListStylePosition = aCopy.mListStylePosition;
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}
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// --------------------
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// nsStylePosition
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//
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nsStylePosition::nsStylePosition(void) { }
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struct StylePositionImpl: public nsStylePosition {
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StylePositionImpl(void)
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{
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mPosition = NS_STYLE_POSITION_STATIC;
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mOverflow = NS_STYLE_OVERFLOW_VISIBLE;
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mLeftOffset.SetAutoValue();
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mTopOffset.SetAutoValue();
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mWidth.SetAutoValue();
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mHeight.SetAutoValue();
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mZIndex.SetAutoValue();
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mClipFlags = NS_STYLE_CLIP_AUTO;
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mClip.SizeTo(0,0,0,0);
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}
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void InheritFrom(const nsStylePosition& aCopy);
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private: // These are not allowed
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StylePositionImpl(const StylePositionImpl& aOther);
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StylePositionImpl& operator=(const StylePositionImpl& aOther);
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};
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void StylePositionImpl::InheritFrom(const nsStylePosition& aCopy)
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{
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// positioning values not inherited
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}
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// --------------------
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// nsStyleText
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//
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nsStyleText::nsStyleText(void) { }
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struct StyleTextImpl: public nsStyleText {
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StyleTextImpl(void) {
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mTextAlign = NS_STYLE_TEXT_ALIGN_LEFT;
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mTextDecoration = NS_STYLE_TEXT_DECORATION_NONE;
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mTextTransform = NS_STYLE_TEXT_TRANSFORM_NONE;
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mWhiteSpace = NS_STYLE_WHITESPACE_NORMAL;
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mLetterSpacing.SetNormalValue();
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mLineHeight.SetNormalValue();
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mTextIndent.SetCoordValue(0);
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mWordSpacing.SetNormalValue();
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mVerticalAlign.SetIntValue(NS_STYLE_VERTICAL_ALIGN_BASELINE, eStyleUnit_Enumerated);
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}
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void InheritFrom(const nsStyleText& aCopy);
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};
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void StyleTextImpl::InheritFrom(const nsStyleText& aCopy)
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{
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// Properties not listed here are not inherited: mVerticalAlign,
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// mTextDecoration
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mTextAlign = aCopy.mTextAlign;
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mTextTransform = aCopy.mTextTransform;
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mWhiteSpace = aCopy.mWhiteSpace;
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mLetterSpacing = aCopy.mLetterSpacing;
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mLineHeight = aCopy.mLineHeight;
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mTextIndent = aCopy.mTextIndent;
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mWordSpacing = aCopy.mWordSpacing;
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}
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// --------------------
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|
// nsStyleDisplay
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|
//
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|
|
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nsStyleDisplay::nsStyleDisplay(void) { }
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|
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struct StyleDisplayImpl: public nsStyleDisplay {
|
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StyleDisplayImpl(void) {
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mDirection = NS_STYLE_DIRECTION_LTR;
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mDisplay = NS_STYLE_DISPLAY_INLINE;
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mFloats = NS_STYLE_FLOAT_NONE;
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mBreakType = NS_STYLE_CLEAR_NONE;
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mBreakBefore = PR_FALSE;
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mBreakAfter = PR_FALSE;
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}
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void InheritFrom(const nsStyleDisplay& aCopy);
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};
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void StyleDisplayImpl::InheritFrom(const nsStyleDisplay& aCopy)
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{
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mDirection = aCopy.mDirection;
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}
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// --------------------
|
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// nsStyleTable
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//
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nsStyleTable::nsStyleTable(void) { }
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|
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struct StyleTableImpl: public nsStyleTable {
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StyleTableImpl(void) {
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mFrame = NS_STYLE_TABLE_FRAME_NONE;
|
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mRules = NS_STYLE_TABLE_RULES_NONE;
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mCellPadding.Reset();
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mCellSpacing.Reset();
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}
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void InheritFrom(const nsStyleTable& aCopy);
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};
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|
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void StyleTableImpl::InheritFrom(const nsStyleTable& aCopy)
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{
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}
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|
|
|
|
//----------------------------------------------------------------------
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|
|
class StyleContextImpl : public nsIStyleContext {
|
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public:
|
|
StyleContextImpl(nsIStyleContext* aParent, nsISupportsArray* aRules, nsIPresContext* aPresContext);
|
|
~StyleContextImpl();
|
|
|
|
void* operator new(size_t sz) {
|
|
void* rv = new char[sz];
|
|
nsCRT::zero(rv, sz);
|
|
return rv;
|
|
}
|
|
|
|
NS_DECL_ISUPPORTS
|
|
|
|
virtual nsIStyleContext* GetParent(void) const;
|
|
virtual nsISupportsArray* GetStyleRules(void) const;
|
|
|
|
virtual PRBool Equals(const nsIStyleContext* aOther) const;
|
|
virtual PRUint32 HashValue(void) const;
|
|
|
|
virtual nsStyleStruct* GetData(const nsIID& aSID);
|
|
|
|
virtual void InheritFrom(const StyleContextImpl& aParent);
|
|
virtual void RecalcAutomaticData(nsIPresContext* aPresContext);
|
|
|
|
nsIStyleContext* mParent;
|
|
PRUint32 mHashValid: 1;
|
|
PRUint32 mHashValue: 31;
|
|
nsISupportsArray* mRules;
|
|
|
|
// the style data...
|
|
StyleFontImpl mFont;
|
|
StyleColorImpl mColor;
|
|
StyleSpacingImpl mSpacing;
|
|
StyleListImpl mList;
|
|
StylePositionImpl mPosition;
|
|
StyleTextImpl mText;
|
|
StyleDisplayImpl mDisplay;
|
|
StyleTableImpl* mTable;
|
|
};
|
|
|
|
#ifdef DEBUG_REFS
|
|
static PRInt32 gInstanceCount;
|
|
#endif
|
|
|
|
StyleContextImpl::StyleContextImpl(nsIStyleContext* aParent,
|
|
nsISupportsArray* aRules,
|
|
nsIPresContext* aPresContext)
|
|
: mParent(aParent), // weak ref
|
|
mRules(aRules),
|
|
mFont(aPresContext->GetDefaultFont()),
|
|
mColor(),
|
|
mSpacing(),
|
|
mList(),
|
|
mPosition(),
|
|
mText(),
|
|
mDisplay(),
|
|
mTable(nsnull)
|
|
{
|
|
NS_INIT_REFCNT();
|
|
NS_IF_ADDREF(mRules);
|
|
|
|
if (nsnull != aParent) {
|
|
InheritFrom((StyleContextImpl&)*aParent);
|
|
}
|
|
|
|
if (nsnull != mRules) {
|
|
PRInt32 index = mRules->Count();
|
|
while (0 < index) {
|
|
nsIStyleRule* rule = (nsIStyleRule*)mRules->ElementAt(--index);
|
|
rule->MapStyleInto(this, aPresContext);
|
|
NS_RELEASE(rule);
|
|
}
|
|
}
|
|
#ifdef DEBUG_REFS
|
|
++gInstanceCount;
|
|
fprintf(stdout, "%d + StyleContext\n", gInstanceCount);
|
|
#endif
|
|
}
|
|
|
|
StyleContextImpl::~StyleContextImpl()
|
|
{
|
|
mParent = nsnull; // weak ref
|
|
NS_IF_RELEASE(mRules);
|
|
if (nsnull != mTable) {
|
|
delete mTable;
|
|
mTable = nsnull;
|
|
}
|
|
|
|
#ifdef DEBUG_REFS
|
|
--gInstanceCount;
|
|
fprintf(stdout, "%d - StyleContext\n", gInstanceCount);
|
|
#endif
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(StyleContextImpl, kIStyleContextIID)
|
|
|
|
nsIStyleContext* StyleContextImpl::GetParent(void) const
|
|
{
|
|
NS_IF_ADDREF(mParent);
|
|
return mParent;
|
|
}
|
|
|
|
nsISupportsArray* StyleContextImpl::GetStyleRules(void) const
|
|
{
|
|
NS_IF_ADDREF(mRules);
|
|
return mRules;
|
|
}
|
|
|
|
|
|
PRBool StyleContextImpl::Equals(const nsIStyleContext* aOther) const
|
|
{
|
|
PRBool result = PR_TRUE;
|
|
const StyleContextImpl* other = (StyleContextImpl*)aOther;
|
|
|
|
if (other != this) {
|
|
if (mParent != other->mParent) {
|
|
result = PR_FALSE;
|
|
}
|
|
else {
|
|
if ((nsnull != mRules) && (nsnull != other->mRules)) {
|
|
result = mRules->Equals(other->mRules);
|
|
}
|
|
else {
|
|
result = PRBool((nsnull == mRules) && (nsnull == other->mRules));
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
PRUint32 StyleContextImpl::HashValue(void) const
|
|
{
|
|
if (0 == mHashValid) {
|
|
((StyleContextImpl*)this)->mHashValue = ((nsnull != mParent) ? mParent->HashValue() : 0);
|
|
if (nsnull != mRules) {
|
|
PRInt32 index = mRules->Count();
|
|
while (0 <= --index) {
|
|
nsIStyleRule* rule = (nsIStyleRule*)mRules->ElementAt(index);
|
|
PRUint32 hash = rule->HashValue();
|
|
((StyleContextImpl*)this)->mHashValue ^= (hash & 0x7FFFFFFF);
|
|
NS_RELEASE(rule);
|
|
}
|
|
}
|
|
((StyleContextImpl*)this)->mHashValid = 1;
|
|
}
|
|
return mHashValue;
|
|
}
|
|
|
|
|
|
nsStyleStruct* StyleContextImpl::GetData(const nsIID& aSID)
|
|
{
|
|
if (aSID.Equals(kStyleFontSID)) {
|
|
return &mFont;
|
|
}
|
|
if (aSID.Equals(kStyleColorSID)) {
|
|
return &mColor;
|
|
}
|
|
if (aSID.Equals(kStyleSpacingSID)) {
|
|
return &mSpacing;
|
|
}
|
|
if (aSID.Equals(kStyleListSID)) {
|
|
return &mList;
|
|
}
|
|
if (aSID.Equals(kStylePositionSID)) {
|
|
return &mPosition;
|
|
}
|
|
if (aSID.Equals(kStyleTextSID)) {
|
|
return &mText;
|
|
}
|
|
if (aSID.Equals(kStyleDisplaySID)) {
|
|
return &mDisplay;
|
|
}
|
|
if (aSID.Equals(kStyleTableSID)) { // this one gets created lazily
|
|
if (nsnull == mTable) {
|
|
mTable = new StyleTableImpl();
|
|
if (nsnull != mParent) {
|
|
StyleContextImpl* parent = (StyleContextImpl*)mParent;
|
|
if (nsnull != parent->mTable) {
|
|
mTable->InheritFrom(*(parent->mTable));
|
|
}
|
|
}
|
|
}
|
|
return mTable;
|
|
}
|
|
return nsnull;
|
|
}
|
|
|
|
void StyleContextImpl::InheritFrom(const StyleContextImpl& aParent)
|
|
{
|
|
mFont.InheritFrom(aParent.mFont);
|
|
mColor.InheritFrom(aParent.mColor);
|
|
mSpacing.InheritFrom(aParent.mSpacing);
|
|
mList.InheritFrom(aParent.mList);
|
|
mText.InheritFrom(aParent.mText);
|
|
mPosition.InheritFrom(aParent.mPosition);
|
|
mDisplay.InheritFrom(aParent.mDisplay);
|
|
}
|
|
|
|
void StyleContextImpl::RecalcAutomaticData(nsIPresContext* aPresContext)
|
|
{
|
|
mSpacing.RecalcData(aPresContext);
|
|
}
|
|
|
|
NS_LAYOUT nsresult
|
|
NS_NewStyleContext(nsIStyleContext** aInstancePtrResult,
|
|
nsISupportsArray* aRules,
|
|
nsIPresContext* aPresContext,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParentFrame)
|
|
{
|
|
NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
|
|
if (nsnull == aInstancePtrResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
nsIStyleContext* parent = nsnull;
|
|
if (nsnull != aParentFrame) {
|
|
aParentFrame->GetStyleContext(aPresContext, parent);
|
|
NS_ASSERTION(nsnull != parent, "parent frame must have style context");
|
|
}
|
|
|
|
StyleContextImpl* context = new StyleContextImpl(parent, aRules, aPresContext);
|
|
NS_IF_RELEASE(parent);
|
|
if (nsnull == context) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
context->RecalcAutomaticData(aPresContext);
|
|
|
|
return context->QueryInterface(kIStyleContextIID, (void **) aInstancePtrResult);
|
|
}
|