зеркало из https://github.com/mozilla/gecko-dev.git
2855 строки
82 KiB
C++
2855 строки
82 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* David Hyatt (hyatt@netscape.com)
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* Mats Palmgren <mats.palmgren@bredband.net>
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* Michael Ventnor <m.ventnor@gmail.com>
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* Jonathon Jongsma <jonathon.jongsma@collabora.co.uk>, Collabora Ltd.
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* L. David Baron <dbaron@dbaron.org>, Mozilla Corporation
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* structs that contain the data provided by nsStyleContext, the
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* internal API for computed style data for an element
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*/
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#include "nsStyleStruct.h"
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#include "nsStyleStructInlines.h"
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#include "nsStyleConsts.h"
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#include "nsThemeConstants.h"
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#include "nsString.h"
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#include "nsPresContext.h"
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#include "nsIDeviceContext.h"
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#include "nsIWidget.h"
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#include "nsIStyleRule.h"
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#include "nsCRT.h"
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#include "nsCSSProps.h"
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#include "nsCOMPtr.h"
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#include "nsIFrame.h"
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#include "nsHTMLReflowState.h"
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#include "prenv.h"
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#include "nsSVGUtils.h"
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#include "nsBidiUtils.h"
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#include "imgIRequest.h"
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#include "imgIContainer.h"
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#include "prlog.h"
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// Make sure we have enough bits in NS_STYLE_INHERIT_MASK.
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PR_STATIC_ASSERT((((1 << nsStyleStructID_Length) - 1) &
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~(NS_STYLE_INHERIT_MASK)) == 0);
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inline PRBool IsFixedUnit(const nsStyleCoord& aCoord, PRBool aEnumOK)
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{
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return aCoord.ConvertsToLength() ||
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(aEnumOK && aCoord.GetUnit() == eStyleUnit_Enumerated);
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}
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static PRBool EqualURIs(nsIURI *aURI1, nsIURI *aURI2)
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{
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PRBool eq;
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return aURI1 == aURI2 || // handle null==null, and optimize
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(aURI1 && aURI2 &&
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NS_SUCCEEDED(aURI1->Equals(aURI2, &eq)) && // not equal on fail
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eq);
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}
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static PRBool EqualURIs(nsCSSValue::URL *aURI1, nsCSSValue::URL *aURI2)
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{
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return aURI1 == aURI2 || // handle null==null, and optimize
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(aURI1 && aURI2 && aURI1->URIEquals(*aURI2));
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}
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static PRBool EqualImages(imgIRequest *aImage1, imgIRequest* aImage2)
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{
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if (aImage1 == aImage2) {
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return PR_TRUE;
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}
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if (!aImage1 || !aImage2) {
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return PR_FALSE;
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}
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nsCOMPtr<nsIURI> uri1, uri2;
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aImage1->GetURI(getter_AddRefs(uri1));
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aImage2->GetURI(getter_AddRefs(uri2));
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return EqualURIs(uri1, uri2);
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}
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static nsChangeHint CalcShadowDifference(nsCSSShadowArray* lhs,
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nsCSSShadowArray* rhs);
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// --------------------
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// nsStyleFont
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//
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nsStyleFont::nsStyleFont(const nsFont& aFont, nsPresContext *aPresContext)
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: mFont(aFont),
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mGenericID(kGenericFont_NONE)
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{
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MOZ_COUNT_CTOR(nsStyleFont);
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mSize = mFont.size = nsStyleFont::ZoomText(aPresContext, mFont.size);
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#ifdef MOZ_MATHML
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mScriptUnconstrainedSize = mSize;
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mScriptMinSize = aPresContext->CSSTwipsToAppUnits(
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NS_POINTS_TO_TWIPS(NS_MATHML_DEFAULT_SCRIPT_MIN_SIZE_PT));
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mScriptLevel = 0;
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mScriptSizeMultiplier = NS_MATHML_DEFAULT_SCRIPT_SIZE_MULTIPLIER;
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#endif
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}
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nsStyleFont::nsStyleFont(const nsStyleFont& aSrc)
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: mFont(aSrc.mFont)
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, mSize(aSrc.mSize)
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, mGenericID(aSrc.mGenericID)
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#ifdef MOZ_MATHML
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, mScriptLevel(aSrc.mScriptLevel)
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, mScriptUnconstrainedSize(aSrc.mScriptUnconstrainedSize)
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, mScriptMinSize(aSrc.mScriptMinSize)
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, mScriptSizeMultiplier(aSrc.mScriptSizeMultiplier)
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#endif
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{
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MOZ_COUNT_CTOR(nsStyleFont);
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}
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nsStyleFont::nsStyleFont(nsPresContext* aPresContext)
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: mFont(*(aPresContext->GetDefaultFont(kPresContext_DefaultVariableFont_ID))),
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mGenericID(kGenericFont_NONE)
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{
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MOZ_COUNT_CTOR(nsStyleFont);
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mSize = mFont.size = nsStyleFont::ZoomText(aPresContext, mFont.size);
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#ifdef MOZ_MATHML
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mScriptUnconstrainedSize = mSize;
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mScriptMinSize = aPresContext->CSSTwipsToAppUnits(
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NS_POINTS_TO_TWIPS(NS_MATHML_DEFAULT_SCRIPT_MIN_SIZE_PT));
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mScriptLevel = 0;
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mScriptSizeMultiplier = NS_MATHML_DEFAULT_SCRIPT_SIZE_MULTIPLIER;
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#endif
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}
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void*
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nsStyleFont::operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
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void* result = aContext->AllocateFromShell(sz);
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if (result)
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memset(result, 0, sz);
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return result;
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}
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void
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nsStyleFont::Destroy(nsPresContext* aContext) {
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this->~nsStyleFont();
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aContext->FreeToShell(sizeof(nsStyleFont), this);
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}
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nsChangeHint nsStyleFont::CalcDifference(const nsStyleFont& aOther) const
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{
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if (mSize == aOther.mSize) {
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return CalcFontDifference(mFont, aOther.mFont);
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}
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return NS_STYLE_HINT_REFLOW;
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}
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#ifdef DEBUG
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/* static */
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nsChangeHint nsStyleFont::MaxDifference()
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{
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return NS_STYLE_HINT_REFLOW;
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}
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#endif
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/* static */ nscoord
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nsStyleFont::ZoomText(nsPresContext *aPresContext, nscoord aSize)
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{
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return nscoord(float(aSize) * aPresContext->TextZoom());
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}
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/* static */ nscoord
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nsStyleFont::UnZoomText(nsPresContext *aPresContext, nscoord aSize)
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{
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return nscoord(float(aSize) / aPresContext->TextZoom());
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}
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nsChangeHint nsStyleFont::CalcFontDifference(const nsFont& aFont1, const nsFont& aFont2)
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{
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if ((aFont1.size == aFont2.size) &&
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(aFont1.sizeAdjust == aFont2.sizeAdjust) &&
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(aFont1.style == aFont2.style) &&
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(aFont1.variant == aFont2.variant) &&
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(aFont1.weight == aFont2.weight) &&
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(aFont1.stretch == aFont2.stretch) &&
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(aFont1.name == aFont2.name) &&
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(aFont1.featureSettings == aFont2.featureSettings) &&
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(aFont1.languageOverride == aFont2.languageOverride)) {
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if ((aFont1.decorations == aFont2.decorations)) {
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return NS_STYLE_HINT_NONE;
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}
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return NS_STYLE_HINT_VISUAL;
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}
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return NS_STYLE_HINT_REFLOW;
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}
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static PRBool IsFixedData(const nsStyleSides& aSides, PRBool aEnumOK)
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{
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NS_FOR_CSS_SIDES(side) {
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if (!IsFixedUnit(aSides.Get(side), aEnumOK))
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return PR_FALSE;
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}
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return PR_TRUE;
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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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if (aCoord.GetUnit() == eStyleUnit_Enumerated) {
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NS_ABORT_IF_FALSE(aEnumTable, "must have enum table");
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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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NS_NOTREACHED("unexpected enum value");
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return 0;
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}
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NS_ABORT_IF_FALSE(aCoord.ConvertsToLength(), "unexpected unit");
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return nsRuleNode::ComputeCoordPercentCalc(aCoord, 0);
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}
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nsStyleMargin::nsStyleMargin() {
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MOZ_COUNT_CTOR(nsStyleMargin);
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nsStyleCoord zero(0, nsStyleCoord::CoordConstructor);
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NS_FOR_CSS_SIDES(side) {
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mMargin.Set(side, zero);
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}
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mHasCachedMargin = PR_FALSE;
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}
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nsStyleMargin::nsStyleMargin(const nsStyleMargin& aSrc) {
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MOZ_COUNT_CTOR(nsStyleMargin);
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mMargin = aSrc.mMargin;
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mHasCachedMargin = PR_FALSE;
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}
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void*
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nsStyleMargin::operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
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void* result = aContext->AllocateFromShell(sz);
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if (result)
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memset(result, 0, sz);
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return result;
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}
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void
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nsStyleMargin::Destroy(nsPresContext* aContext) {
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this->~nsStyleMargin();
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aContext->FreeToShell(sizeof(nsStyleMargin), this);
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}
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void nsStyleMargin::RecalcData()
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{
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if (IsFixedData(mMargin, PR_FALSE)) {
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NS_FOR_CSS_SIDES(side) {
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mCachedMargin.side(side) = CalcCoord(mMargin.Get(side), nsnull, 0);
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}
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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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nsChangeHint nsStyleMargin::CalcDifference(const nsStyleMargin& aOther) const
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{
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if (mMargin == aOther.mMargin) {
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return NS_STYLE_HINT_NONE;
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}
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// Margin differences can't affect descendant intrinsic sizes and
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// don't need to force children to reflow.
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return NS_SubtractHint(NS_STYLE_HINT_REFLOW,
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NS_CombineHint(nsChangeHint_ClearDescendantIntrinsics,
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nsChangeHint_NeedDirtyReflow));
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}
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#ifdef DEBUG
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/* static */
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nsChangeHint nsStyleMargin::MaxDifference()
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{
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return NS_SubtractHint(NS_STYLE_HINT_REFLOW,
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NS_CombineHint(nsChangeHint_ClearDescendantIntrinsics,
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nsChangeHint_NeedDirtyReflow));
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}
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#endif
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nsStylePadding::nsStylePadding() {
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MOZ_COUNT_CTOR(nsStylePadding);
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nsStyleCoord zero(0, nsStyleCoord::CoordConstructor);
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NS_FOR_CSS_SIDES(side) {
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mPadding.Set(side, zero);
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}
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mHasCachedPadding = PR_FALSE;
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}
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nsStylePadding::nsStylePadding(const nsStylePadding& aSrc) {
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MOZ_COUNT_CTOR(nsStylePadding);
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mPadding = aSrc.mPadding;
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mHasCachedPadding = PR_FALSE;
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}
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void*
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nsStylePadding::operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
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void* result = aContext->AllocateFromShell(sz);
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if (result)
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memset(result, 0, sz);
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return result;
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}
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void
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nsStylePadding::Destroy(nsPresContext* aContext) {
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this->~nsStylePadding();
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aContext->FreeToShell(sizeof(nsStylePadding), this);
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}
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void nsStylePadding::RecalcData()
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{
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if (IsFixedData(mPadding, PR_FALSE)) {
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NS_FOR_CSS_SIDES(side) {
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// Clamp negative calc() to 0.
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mCachedPadding.side(side) =
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NS_MAX(CalcCoord(mPadding.Get(side), nsnull, 0), 0);
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}
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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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nsChangeHint nsStylePadding::CalcDifference(const nsStylePadding& aOther) const
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{
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if (mPadding == aOther.mPadding) {
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return NS_STYLE_HINT_NONE;
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}
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// Padding differences can't affect descendant intrinsic sizes, but do need
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// to force children to reflow so that we can reposition them, since their
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// offsets are from our frame bounds but our content rect's position within
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// those bounds is moving.
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return NS_SubtractHint(NS_STYLE_HINT_REFLOW,
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nsChangeHint_ClearDescendantIntrinsics);
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}
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#ifdef DEBUG
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/* static */
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nsChangeHint nsStylePadding::MaxDifference()
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{
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return NS_SubtractHint(NS_STYLE_HINT_REFLOW,
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nsChangeHint_ClearDescendantIntrinsics);
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}
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#endif
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nsStyleBorder::nsStyleBorder(nsPresContext* aPresContext)
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: mHaveBorderImageWidth(PR_FALSE)
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#ifdef DEBUG
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, mImageTracked(false)
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#endif
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, mComputedBorder(0, 0, 0, 0)
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, mBorderImage(nsnull)
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{
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MOZ_COUNT_CTOR(nsStyleBorder);
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nscoord medium =
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(aPresContext->GetBorderWidthTable())[NS_STYLE_BORDER_WIDTH_MEDIUM];
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NS_FOR_CSS_SIDES(side) {
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mBorder.side(side) = medium;
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mBorderStyle[side] = NS_STYLE_BORDER_STYLE_NONE | BORDER_COLOR_FOREGROUND;
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mBorderColor[side] = NS_RGB(0, 0, 0);
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}
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NS_FOR_CSS_HALF_CORNERS(corner) {
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mBorderRadius.Set(corner, nsStyleCoord(0, nsStyleCoord::CoordConstructor));
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}
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mBorderColors = nsnull;
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mBoxShadow = nsnull;
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mFloatEdge = NS_STYLE_FLOAT_EDGE_CONTENT;
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mTwipsPerPixel = aPresContext->DevPixelsToAppUnits(1);
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}
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nsBorderColors::~nsBorderColors()
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{
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NS_CSS_DELETE_LIST_MEMBER(nsBorderColors, this, mNext);
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}
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nsBorderColors*
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nsBorderColors::Clone(PRBool aDeep) const
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{
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nsBorderColors* result = new nsBorderColors(mColor);
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if (NS_UNLIKELY(!result))
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return result;
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if (aDeep)
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NS_CSS_CLONE_LIST_MEMBER(nsBorderColors, this, mNext, result, (PR_FALSE));
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return result;
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}
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nsStyleBorder::nsStyleBorder(const nsStyleBorder& aSrc)
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: mBorderRadius(aSrc.mBorderRadius),
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mBorderImageSplit(aSrc.mBorderImageSplit),
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mFloatEdge(aSrc.mFloatEdge),
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mBorderImageHFill(aSrc.mBorderImageHFill),
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mBorderImageVFill(aSrc.mBorderImageVFill),
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mBorderColors(nsnull),
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mBoxShadow(aSrc.mBoxShadow),
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mHaveBorderImageWidth(aSrc.mHaveBorderImageWidth),
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mBorderImageWidth(aSrc.mBorderImageWidth),
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mComputedBorder(aSrc.mComputedBorder),
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mBorder(aSrc.mBorder),
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mBorderImage(aSrc.mBorderImage),
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mTwipsPerPixel(aSrc.mTwipsPerPixel)
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{
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MOZ_COUNT_CTOR(nsStyleBorder);
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if (aSrc.mBorderColors) {
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EnsureBorderColors();
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for (PRInt32 i = 0; i < 4; i++)
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if (aSrc.mBorderColors[i])
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mBorderColors[i] = aSrc.mBorderColors[i]->Clone();
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else
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mBorderColors[i] = nsnull;
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}
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NS_FOR_CSS_SIDES(side) {
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mBorderStyle[side] = aSrc.mBorderStyle[side];
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mBorderColor[side] = aSrc.mBorderColor[side];
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}
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NS_FOR_CSS_HALF_CORNERS(corner) {
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mBorderRadius.Set(corner, aSrc.mBorderRadius.Get(corner));
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}
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}
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nsStyleBorder::~nsStyleBorder()
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{
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NS_ABORT_IF_FALSE(!mImageTracked,
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"nsStyleBorder being destroyed while still tracking image!");
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MOZ_COUNT_DTOR(nsStyleBorder);
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if (mBorderColors) {
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for (PRInt32 i = 0; i < 4; i++)
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delete mBorderColors[i];
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delete [] mBorderColors;
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}
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}
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void*
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nsStyleBorder::operator new(size_t sz, nsPresContext* aContext) CPP_THROW_NEW {
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void* result = aContext->AllocateFromShell(sz);
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if (result)
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memset(result, 0, sz);
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return result;
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}
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void
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nsStyleBorder::Destroy(nsPresContext* aContext) {
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if (mBorderImage)
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UntrackImage(aContext);
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this->~nsStyleBorder();
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aContext->FreeToShell(sizeof(nsStyleBorder), this);
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}
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nsChangeHint nsStyleBorder::CalcDifference(const nsStyleBorder& aOther) const
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{
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nsChangeHint shadowDifference =
|
|
CalcShadowDifference(mBoxShadow, aOther.mBoxShadow);
|
|
|
|
// Note that differences in mBorder don't affect rendering (which should only
|
|
// use mComputedBorder), so don't need to be tested for here.
|
|
// XXXbz we should be able to return a more specific change hint for
|
|
// at least GetActualBorder() differences...
|
|
if (mTwipsPerPixel != aOther.mTwipsPerPixel ||
|
|
GetActualBorder() != aOther.GetActualBorder() ||
|
|
mFloatEdge != aOther.mFloatEdge ||
|
|
(shadowDifference & nsChangeHint_ReflowFrame))
|
|
return NS_STYLE_HINT_REFLOW;
|
|
|
|
// Note that mBorderStyle stores not only the border style but also
|
|
// color-related flags. Given that we've already done an mComputedBorder
|
|
// comparison, border-style differences can only lead to a VISUAL hint. So
|
|
// it's OK to just compare the values directly -- if either the actual
|
|
// style or the color flags differ we want to repaint.
|
|
NS_FOR_CSS_SIDES(ix) {
|
|
if (mBorderStyle[ix] != aOther.mBorderStyle[ix] ||
|
|
mBorderColor[ix] != aOther.mBorderColor[ix])
|
|
return NS_STYLE_HINT_VISUAL;
|
|
}
|
|
|
|
if (mBorderRadius != aOther.mBorderRadius ||
|
|
!mBorderColors != !aOther.mBorderColors)
|
|
return NS_STYLE_HINT_VISUAL;
|
|
|
|
if (IsBorderImageLoaded() || aOther.IsBorderImageLoaded()) {
|
|
if (mBorderImage != aOther.mBorderImage ||
|
|
mBorderImageHFill != aOther.mBorderImageHFill ||
|
|
mBorderImageVFill != aOther.mBorderImageVFill ||
|
|
mBorderImageSplit != aOther.mBorderImageSplit)
|
|
return NS_STYLE_HINT_VISUAL;
|
|
// The call to GetActualBorder above already considered
|
|
// mBorderImageWidth and mHaveBorderImageWidth.
|
|
}
|
|
|
|
// Note that at this point if mBorderColors is non-null so is
|
|
// aOther.mBorderColors
|
|
if (mBorderColors) {
|
|
NS_FOR_CSS_SIDES(ix) {
|
|
if (!nsBorderColors::Equal(mBorderColors[ix],
|
|
aOther.mBorderColors[ix]))
|
|
return NS_STYLE_HINT_VISUAL;
|
|
}
|
|
}
|
|
|
|
return shadowDifference;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleBorder::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
#endif
|
|
|
|
PRBool
|
|
nsStyleBorder::ImageBorderDiffers() const
|
|
{
|
|
return mComputedBorder !=
|
|
(mHaveBorderImageWidth ? mBorderImageWidth : mBorder);
|
|
}
|
|
|
|
const nsMargin&
|
|
nsStyleBorder::GetActualBorder() const
|
|
{
|
|
if (IsBorderImageLoaded())
|
|
if (mHaveBorderImageWidth)
|
|
return mBorderImageWidth;
|
|
else
|
|
return mBorder;
|
|
else
|
|
return mComputedBorder;
|
|
}
|
|
|
|
void
|
|
nsStyleBorder::TrackImage(nsPresContext* aContext)
|
|
{
|
|
// Sanity
|
|
NS_ABORT_IF_FALSE(!mImageTracked, "Already tracking image!");
|
|
NS_ABORT_IF_FALSE(mBorderImage, "Can't track null image!");
|
|
|
|
// Register the image with the document
|
|
nsIDocument* doc = aContext->Document();
|
|
if (doc)
|
|
doc->AddImage(mBorderImage);
|
|
|
|
// Mark state
|
|
#ifdef DEBUG
|
|
mImageTracked = true;
|
|
#endif
|
|
}
|
|
|
|
void
|
|
nsStyleBorder::UntrackImage(nsPresContext* aContext)
|
|
{
|
|
// Sanity
|
|
NS_ABORT_IF_FALSE(mImageTracked, "Image not tracked!");
|
|
NS_ABORT_IF_FALSE(mBorderImage, "Can't track null image!");
|
|
|
|
// Unregister the image with the document
|
|
nsIDocument* doc = aContext->Document();
|
|
if (doc)
|
|
doc->RemoveImage(mBorderImage);
|
|
|
|
// Mark state
|
|
#ifdef DEBUG
|
|
mImageTracked = false;
|
|
#endif
|
|
}
|
|
|
|
nsStyleOutline::nsStyleOutline(nsPresContext* aPresContext)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleOutline);
|
|
// spacing values not inherited
|
|
nsStyleCoord zero(0, nsStyleCoord::CoordConstructor);
|
|
NS_FOR_CSS_HALF_CORNERS(corner) {
|
|
mOutlineRadius.Set(corner, zero);
|
|
}
|
|
|
|
mOutlineOffset = 0;
|
|
|
|
mOutlineWidth = nsStyleCoord(NS_STYLE_BORDER_WIDTH_MEDIUM, eStyleUnit_Enumerated);
|
|
mOutlineStyle = NS_STYLE_BORDER_STYLE_NONE;
|
|
mOutlineColor = NS_RGB(0, 0, 0);
|
|
|
|
mHasCachedOutline = PR_FALSE;
|
|
mTwipsPerPixel = aPresContext->DevPixelsToAppUnits(1);
|
|
}
|
|
|
|
nsStyleOutline::nsStyleOutline(const nsStyleOutline& aSrc) {
|
|
MOZ_COUNT_CTOR(nsStyleOutline);
|
|
memcpy((nsStyleOutline*)this, &aSrc, sizeof(nsStyleOutline));
|
|
}
|
|
|
|
void
|
|
nsStyleOutline::RecalcData(nsPresContext* aContext)
|
|
{
|
|
if (NS_STYLE_BORDER_STYLE_NONE == GetOutlineStyle()) {
|
|
mCachedOutlineWidth = 0;
|
|
mHasCachedOutline = PR_TRUE;
|
|
} else if (IsFixedUnit(mOutlineWidth, PR_TRUE)) {
|
|
// Clamp negative calc() to 0.
|
|
mCachedOutlineWidth =
|
|
NS_MAX(CalcCoord(mOutlineWidth, aContext->GetBorderWidthTable(), 3), 0);
|
|
mCachedOutlineWidth =
|
|
NS_ROUND_BORDER_TO_PIXELS(mCachedOutlineWidth, mTwipsPerPixel);
|
|
mHasCachedOutline = PR_TRUE;
|
|
}
|
|
else
|
|
mHasCachedOutline = PR_FALSE;
|
|
}
|
|
|
|
nsChangeHint nsStyleOutline::CalcDifference(const nsStyleOutline& aOther) const
|
|
{
|
|
PRBool outlineWasVisible =
|
|
mCachedOutlineWidth > 0 && mOutlineStyle != NS_STYLE_BORDER_STYLE_NONE;
|
|
PRBool outlineIsVisible =
|
|
aOther.mCachedOutlineWidth > 0 && aOther.mOutlineStyle != NS_STYLE_BORDER_STYLE_NONE;
|
|
if (outlineWasVisible != outlineIsVisible ||
|
|
(outlineIsVisible && (mOutlineOffset != aOther.mOutlineOffset ||
|
|
mOutlineWidth != aOther.mOutlineWidth ||
|
|
mTwipsPerPixel != aOther.mTwipsPerPixel))) {
|
|
return NS_CombineHint(nsChangeHint_ReflowFrame, nsChangeHint_RepaintFrame);
|
|
}
|
|
if ((mOutlineStyle != aOther.mOutlineStyle) ||
|
|
(mOutlineColor != aOther.mOutlineColor) ||
|
|
(mOutlineRadius != aOther.mOutlineRadius)) {
|
|
return nsChangeHint_RepaintFrame;
|
|
}
|
|
return NS_STYLE_HINT_NONE;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleOutline::MaxDifference()
|
|
{
|
|
return NS_CombineHint(nsChangeHint_ReflowFrame, nsChangeHint_RepaintFrame);
|
|
}
|
|
#endif
|
|
|
|
// --------------------
|
|
// nsStyleList
|
|
//
|
|
nsStyleList::nsStyleList()
|
|
: mListStyleType(NS_STYLE_LIST_STYLE_DISC),
|
|
mListStylePosition(NS_STYLE_LIST_STYLE_POSITION_OUTSIDE)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleList);
|
|
}
|
|
|
|
nsStyleList::~nsStyleList()
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleList);
|
|
}
|
|
|
|
nsStyleList::nsStyleList(const nsStyleList& aSource)
|
|
: mListStyleType(aSource.mListStyleType),
|
|
mListStylePosition(aSource.mListStylePosition),
|
|
mImageRegion(aSource.mImageRegion)
|
|
{
|
|
SetListStyleImage(aSource.GetListStyleImage());
|
|
MOZ_COUNT_CTOR(nsStyleList);
|
|
}
|
|
|
|
nsChangeHint nsStyleList::CalcDifference(const nsStyleList& aOther) const
|
|
{
|
|
if (mListStylePosition != aOther.mListStylePosition)
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
if (EqualImages(mListStyleImage, aOther.mListStyleImage) &&
|
|
mListStyleType == aOther.mListStyleType) {
|
|
if (mImageRegion == aOther.mImageRegion)
|
|
return NS_STYLE_HINT_NONE;
|
|
if (mImageRegion.width == aOther.mImageRegion.width &&
|
|
mImageRegion.height == aOther.mImageRegion.height)
|
|
return NS_STYLE_HINT_VISUAL;
|
|
}
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleList::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
#endif
|
|
|
|
// --------------------
|
|
// nsStyleXUL
|
|
//
|
|
nsStyleXUL::nsStyleXUL()
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleXUL);
|
|
mBoxAlign = NS_STYLE_BOX_ALIGN_STRETCH;
|
|
mBoxDirection = NS_STYLE_BOX_DIRECTION_NORMAL;
|
|
mBoxFlex = 0.0f;
|
|
mBoxOrient = NS_STYLE_BOX_ORIENT_HORIZONTAL;
|
|
mBoxPack = NS_STYLE_BOX_PACK_START;
|
|
mBoxOrdinal = 1;
|
|
mStretchStack = PR_TRUE;
|
|
}
|
|
|
|
nsStyleXUL::~nsStyleXUL()
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleXUL);
|
|
}
|
|
|
|
nsStyleXUL::nsStyleXUL(const nsStyleXUL& aSource)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleXUL);
|
|
memcpy((nsStyleXUL*)this, &aSource, sizeof(nsStyleXUL));
|
|
}
|
|
|
|
nsChangeHint nsStyleXUL::CalcDifference(const nsStyleXUL& aOther) const
|
|
{
|
|
if (mBoxAlign == aOther.mBoxAlign &&
|
|
mBoxDirection == aOther.mBoxDirection &&
|
|
mBoxFlex == aOther.mBoxFlex &&
|
|
mBoxOrient == aOther.mBoxOrient &&
|
|
mBoxPack == aOther.mBoxPack &&
|
|
mBoxOrdinal == aOther.mBoxOrdinal)
|
|
return NS_STYLE_HINT_NONE;
|
|
if (mBoxOrdinal != aOther.mBoxOrdinal)
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleXUL::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
#endif
|
|
|
|
// --------------------
|
|
// nsStyleColumn
|
|
//
|
|
nsStyleColumn::nsStyleColumn(nsPresContext* aPresContext)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleColumn);
|
|
mColumnCount = NS_STYLE_COLUMN_COUNT_AUTO;
|
|
mColumnWidth.SetAutoValue();
|
|
mColumnGap.SetNormalValue();
|
|
|
|
mColumnRuleWidth = (aPresContext->GetBorderWidthTable())[NS_STYLE_BORDER_WIDTH_MEDIUM];
|
|
mColumnRuleStyle = NS_STYLE_BORDER_STYLE_NONE;
|
|
mColumnRuleColor = NS_RGB(0, 0, 0);
|
|
mColumnRuleColorIsForeground = PR_TRUE;
|
|
|
|
mTwipsPerPixel = aPresContext->AppUnitsPerDevPixel();
|
|
}
|
|
|
|
nsStyleColumn::~nsStyleColumn()
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleColumn);
|
|
}
|
|
|
|
nsStyleColumn::nsStyleColumn(const nsStyleColumn& aSource)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleColumn);
|
|
memcpy((nsStyleColumn*)this, &aSource, sizeof(nsStyleColumn));
|
|
}
|
|
|
|
nsChangeHint nsStyleColumn::CalcDifference(const nsStyleColumn& aOther) const
|
|
{
|
|
if ((mColumnWidth.GetUnit() == eStyleUnit_Auto)
|
|
!= (aOther.mColumnWidth.GetUnit() == eStyleUnit_Auto) ||
|
|
mColumnCount != aOther.mColumnCount)
|
|
// We force column count changes to do a reframe, because it's tricky to handle
|
|
// some edge cases where the column count gets smaller and content overflows.
|
|
// XXX not ideal
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
|
|
if (mColumnWidth != aOther.mColumnWidth ||
|
|
mColumnGap != aOther.mColumnGap)
|
|
return NS_STYLE_HINT_REFLOW;
|
|
|
|
if (GetComputedColumnRuleWidth() != aOther.GetComputedColumnRuleWidth() ||
|
|
mColumnRuleStyle != aOther.mColumnRuleStyle ||
|
|
mColumnRuleColor != aOther.mColumnRuleColor ||
|
|
mColumnRuleColorIsForeground != aOther.mColumnRuleColorIsForeground)
|
|
return NS_STYLE_HINT_VISUAL;
|
|
|
|
return NS_STYLE_HINT_NONE;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleColumn::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
#endif
|
|
|
|
// --------------------
|
|
// nsStyleSVG
|
|
//
|
|
nsStyleSVG::nsStyleSVG()
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleSVG);
|
|
mFill.mType = eStyleSVGPaintType_Color;
|
|
mFill.mPaint.mColor = NS_RGB(0,0,0);
|
|
mFill.mFallbackColor = NS_RGB(0,0,0);
|
|
mStroke.mType = eStyleSVGPaintType_None;
|
|
mStroke.mPaint.mColor = NS_RGB(0,0,0);
|
|
mStroke.mFallbackColor = NS_RGB(0,0,0);
|
|
mStrokeDasharray = nsnull;
|
|
|
|
mStrokeDashoffset.SetCoordValue(0);
|
|
mStrokeWidth.SetCoordValue(nsPresContext::CSSPixelsToAppUnits(1));
|
|
|
|
mFillOpacity = 1.0f;
|
|
mStrokeMiterlimit = 4.0f;
|
|
mStrokeOpacity = 1.0f;
|
|
|
|
mStrokeDasharrayLength = 0;
|
|
mClipRule = NS_STYLE_FILL_RULE_NONZERO;
|
|
mColorInterpolation = NS_STYLE_COLOR_INTERPOLATION_SRGB;
|
|
mColorInterpolationFilters = NS_STYLE_COLOR_INTERPOLATION_LINEARRGB;
|
|
mFillRule = NS_STYLE_FILL_RULE_NONZERO;
|
|
mImageRendering = NS_STYLE_IMAGE_RENDERING_AUTO;
|
|
mShapeRendering = NS_STYLE_SHAPE_RENDERING_AUTO;
|
|
mStrokeLinecap = NS_STYLE_STROKE_LINECAP_BUTT;
|
|
mStrokeLinejoin = NS_STYLE_STROKE_LINEJOIN_MITER;
|
|
mTextAnchor = NS_STYLE_TEXT_ANCHOR_START;
|
|
mTextRendering = NS_STYLE_TEXT_RENDERING_AUTO;
|
|
}
|
|
|
|
nsStyleSVG::~nsStyleSVG()
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleSVG);
|
|
delete [] mStrokeDasharray;
|
|
}
|
|
|
|
nsStyleSVG::nsStyleSVG(const nsStyleSVG& aSource)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleSVG);
|
|
mFill = aSource.mFill;
|
|
mStroke = aSource.mStroke;
|
|
|
|
mMarkerEnd = aSource.mMarkerEnd;
|
|
mMarkerMid = aSource.mMarkerMid;
|
|
mMarkerStart = aSource.mMarkerStart;
|
|
|
|
mStrokeDasharrayLength = aSource.mStrokeDasharrayLength;
|
|
if (aSource.mStrokeDasharray) {
|
|
mStrokeDasharray = new nsStyleCoord[mStrokeDasharrayLength];
|
|
if (mStrokeDasharray)
|
|
memcpy(mStrokeDasharray,
|
|
aSource.mStrokeDasharray,
|
|
mStrokeDasharrayLength * sizeof(nsStyleCoord));
|
|
else
|
|
mStrokeDasharrayLength = 0;
|
|
} else {
|
|
mStrokeDasharray = nsnull;
|
|
}
|
|
|
|
mStrokeDashoffset = aSource.mStrokeDashoffset;
|
|
mStrokeWidth = aSource.mStrokeWidth;
|
|
|
|
mFillOpacity = aSource.mFillOpacity;
|
|
mStrokeMiterlimit = aSource.mStrokeMiterlimit;
|
|
mStrokeOpacity = aSource.mStrokeOpacity;
|
|
|
|
mClipRule = aSource.mClipRule;
|
|
mColorInterpolation = aSource.mColorInterpolation;
|
|
mColorInterpolationFilters = aSource.mColorInterpolationFilters;
|
|
mFillRule = aSource.mFillRule;
|
|
mImageRendering = aSource.mImageRendering;
|
|
mShapeRendering = aSource.mShapeRendering;
|
|
mStrokeLinecap = aSource.mStrokeLinecap;
|
|
mStrokeLinejoin = aSource.mStrokeLinejoin;
|
|
mTextAnchor = aSource.mTextAnchor;
|
|
mTextRendering = aSource.mTextRendering;
|
|
}
|
|
|
|
static PRBool PaintURIChanged(const nsStyleSVGPaint& aPaint1,
|
|
const nsStyleSVGPaint& aPaint2)
|
|
{
|
|
if (aPaint1.mType != aPaint2.mType) {
|
|
return aPaint1.mType == eStyleSVGPaintType_Server ||
|
|
aPaint2.mType == eStyleSVGPaintType_Server;
|
|
}
|
|
return aPaint1.mType == eStyleSVGPaintType_Server &&
|
|
!EqualURIs(aPaint1.mPaint.mPaintServer, aPaint2.mPaint.mPaintServer);
|
|
}
|
|
|
|
nsChangeHint nsStyleSVG::CalcDifference(const nsStyleSVG& aOther) const
|
|
{
|
|
nsChangeHint hint = nsChangeHint(0);
|
|
|
|
if (mTextRendering != aOther.mTextRendering) {
|
|
NS_UpdateHint(hint, nsChangeHint_RepaintFrame);
|
|
// May be needed for non-svg frames
|
|
NS_UpdateHint(hint, nsChangeHint_ReflowFrame);
|
|
}
|
|
|
|
if (!EqualURIs(mMarkerEnd, aOther.mMarkerEnd) ||
|
|
!EqualURIs(mMarkerMid, aOther.mMarkerMid) ||
|
|
!EqualURIs(mMarkerStart, aOther.mMarkerStart)) {
|
|
NS_UpdateHint(hint, nsChangeHint_RepaintFrame);
|
|
NS_UpdateHint(hint, nsChangeHint_UpdateEffects);
|
|
return hint;
|
|
}
|
|
|
|
if (mFill != aOther.mFill ||
|
|
mStroke != aOther.mStroke) {
|
|
NS_UpdateHint(hint, nsChangeHint_RepaintFrame);
|
|
if (PaintURIChanged(mFill, aOther.mFill) ||
|
|
PaintURIChanged(mStroke, aOther.mStroke)) {
|
|
NS_UpdateHint(hint, nsChangeHint_UpdateEffects);
|
|
}
|
|
// Nothing more to do, below we can only set "repaint"
|
|
return hint;
|
|
}
|
|
|
|
if ( mStrokeDashoffset != aOther.mStrokeDashoffset ||
|
|
mStrokeWidth != aOther.mStrokeWidth ||
|
|
|
|
mFillOpacity != aOther.mFillOpacity ||
|
|
mStrokeMiterlimit != aOther.mStrokeMiterlimit ||
|
|
mStrokeOpacity != aOther.mStrokeOpacity ||
|
|
|
|
mClipRule != aOther.mClipRule ||
|
|
mColorInterpolation != aOther.mColorInterpolation ||
|
|
mColorInterpolationFilters != aOther.mColorInterpolationFilters ||
|
|
mFillRule != aOther.mFillRule ||
|
|
mImageRendering != aOther.mImageRendering ||
|
|
mShapeRendering != aOther.mShapeRendering ||
|
|
mStrokeDasharrayLength != aOther.mStrokeDasharrayLength ||
|
|
mStrokeLinecap != aOther.mStrokeLinecap ||
|
|
mStrokeLinejoin != aOther.mStrokeLinejoin ||
|
|
mTextAnchor != aOther.mTextAnchor) {
|
|
NS_UpdateHint(hint, nsChangeHint_RepaintFrame);
|
|
return hint;
|
|
}
|
|
|
|
// length of stroke dasharrays are the same (tested above) - check entries
|
|
for (PRUint32 i=0; i<mStrokeDasharrayLength; i++)
|
|
if (mStrokeDasharray[i] != aOther.mStrokeDasharray[i]) {
|
|
NS_UpdateHint(hint, nsChangeHint_RepaintFrame);
|
|
return hint;
|
|
}
|
|
|
|
return hint;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleSVG::MaxDifference()
|
|
{
|
|
return NS_CombineHint(NS_CombineHint(nsChangeHint_UpdateEffects,
|
|
nsChangeHint_ReflowFrame),
|
|
nsChangeHint_RepaintFrame);
|
|
}
|
|
#endif
|
|
|
|
// --------------------
|
|
// nsStyleSVGReset
|
|
//
|
|
nsStyleSVGReset::nsStyleSVGReset()
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleSVGReset);
|
|
mStopColor = NS_RGB(0,0,0);
|
|
mFloodColor = NS_RGB(0,0,0);
|
|
mLightingColor = NS_RGB(255,255,255);
|
|
mClipPath = nsnull;
|
|
mFilter = nsnull;
|
|
mMask = nsnull;
|
|
mStopOpacity = 1.0f;
|
|
mFloodOpacity = 1.0f;
|
|
mDominantBaseline = NS_STYLE_DOMINANT_BASELINE_AUTO;
|
|
}
|
|
|
|
nsStyleSVGReset::~nsStyleSVGReset()
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleSVGReset);
|
|
}
|
|
|
|
nsStyleSVGReset::nsStyleSVGReset(const nsStyleSVGReset& aSource)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleSVGReset);
|
|
mStopColor = aSource.mStopColor;
|
|
mFloodColor = aSource.mFloodColor;
|
|
mLightingColor = aSource.mLightingColor;
|
|
mClipPath = aSource.mClipPath;
|
|
mFilter = aSource.mFilter;
|
|
mMask = aSource.mMask;
|
|
mStopOpacity = aSource.mStopOpacity;
|
|
mFloodOpacity = aSource.mFloodOpacity;
|
|
mDominantBaseline = aSource.mDominantBaseline;
|
|
}
|
|
|
|
nsChangeHint nsStyleSVGReset::CalcDifference(const nsStyleSVGReset& aOther) const
|
|
{
|
|
nsChangeHint hint = nsChangeHint(0);
|
|
|
|
if (!EqualURIs(mClipPath, aOther.mClipPath) ||
|
|
!EqualURIs(mFilter, aOther.mFilter) ||
|
|
!EqualURIs(mMask, aOther.mMask)) {
|
|
NS_UpdateHint(hint, nsChangeHint_UpdateEffects);
|
|
NS_UpdateHint(hint, nsChangeHint_ReflowFrame);
|
|
NS_UpdateHint(hint, nsChangeHint_RepaintFrame);
|
|
} else if (mStopColor != aOther.mStopColor ||
|
|
mFloodColor != aOther.mFloodColor ||
|
|
mLightingColor != aOther.mLightingColor ||
|
|
mStopOpacity != aOther.mStopOpacity ||
|
|
mFloodOpacity != aOther.mFloodOpacity ||
|
|
mDominantBaseline != aOther.mDominantBaseline)
|
|
NS_UpdateHint(hint, nsChangeHint_RepaintFrame);
|
|
|
|
return hint;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleSVGReset::MaxDifference()
|
|
{
|
|
return NS_CombineHint(NS_CombineHint(nsChangeHint_UpdateEffects,
|
|
nsChangeHint_ReflowFrame),
|
|
nsChangeHint_RepaintFrame);
|
|
}
|
|
#endif
|
|
|
|
// nsStyleSVGPaint implementation
|
|
nsStyleSVGPaint::~nsStyleSVGPaint()
|
|
{
|
|
if (mType == eStyleSVGPaintType_Server) {
|
|
NS_IF_RELEASE(mPaint.mPaintServer);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsStyleSVGPaint::SetType(nsStyleSVGPaintType aType)
|
|
{
|
|
if (mType == eStyleSVGPaintType_Server) {
|
|
this->~nsStyleSVGPaint();
|
|
new (this) nsStyleSVGPaint();
|
|
}
|
|
mType = aType;
|
|
}
|
|
|
|
nsStyleSVGPaint& nsStyleSVGPaint::operator=(const nsStyleSVGPaint& aOther)
|
|
{
|
|
if (this == &aOther)
|
|
return *this;
|
|
|
|
SetType(aOther.mType);
|
|
|
|
mFallbackColor = aOther.mFallbackColor;
|
|
if (mType == eStyleSVGPaintType_Server) {
|
|
mPaint.mPaintServer = aOther.mPaint.mPaintServer;
|
|
NS_IF_ADDREF(mPaint.mPaintServer);
|
|
} else {
|
|
mPaint.mColor = aOther.mPaint.mColor;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
PRBool nsStyleSVGPaint::operator==(const nsStyleSVGPaint& aOther) const
|
|
{
|
|
if (mType != aOther.mType)
|
|
return PR_FALSE;
|
|
if (mType == eStyleSVGPaintType_Server)
|
|
return EqualURIs(mPaint.mPaintServer, aOther.mPaint.mPaintServer) &&
|
|
mFallbackColor == aOther.mFallbackColor;
|
|
if (mType == eStyleSVGPaintType_None)
|
|
return PR_TRUE;
|
|
return mPaint.mColor == aOther.mPaint.mColor;
|
|
}
|
|
|
|
|
|
// --------------------
|
|
// nsStylePosition
|
|
//
|
|
nsStylePosition::nsStylePosition(void)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStylePosition);
|
|
// positioning values not inherited
|
|
nsStyleCoord autoCoord(eStyleUnit_Auto);
|
|
mOffset.SetLeft(autoCoord);
|
|
mOffset.SetTop(autoCoord);
|
|
mOffset.SetRight(autoCoord);
|
|
mOffset.SetBottom(autoCoord);
|
|
mWidth.SetAutoValue();
|
|
mMinWidth.SetCoordValue(0);
|
|
mMaxWidth.SetNoneValue();
|
|
mHeight.SetAutoValue();
|
|
mMinHeight.SetCoordValue(0);
|
|
mMaxHeight.SetNoneValue();
|
|
mBoxSizing = NS_STYLE_BOX_SIZING_CONTENT;
|
|
mZIndex.SetAutoValue();
|
|
}
|
|
|
|
nsStylePosition::~nsStylePosition(void)
|
|
{
|
|
MOZ_COUNT_DTOR(nsStylePosition);
|
|
}
|
|
|
|
nsStylePosition::nsStylePosition(const nsStylePosition& aSource)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStylePosition);
|
|
memcpy((nsStylePosition*)this, &aSource, sizeof(nsStylePosition));
|
|
}
|
|
|
|
nsChangeHint nsStylePosition::CalcDifference(const nsStylePosition& aOther) const
|
|
{
|
|
nsChangeHint hint =
|
|
(mZIndex == aOther.mZIndex) ? NS_STYLE_HINT_NONE : nsChangeHint_RepaintFrame;
|
|
|
|
if (mBoxSizing != aOther.mBoxSizing) {
|
|
// Can affect both widths and heights; just a bad scene.
|
|
return NS_CombineHint(hint, nsChangeHint_ReflowFrame);
|
|
}
|
|
|
|
if (mHeight != aOther.mHeight ||
|
|
mMinHeight != aOther.mMinHeight ||
|
|
mMaxHeight != aOther.mMaxHeight) {
|
|
// Height changes can affect descendant intrinsic sizes due to replaced
|
|
// elements with percentage heights in descendants which also have
|
|
// percentage heights. And due to our not-so-great computation of mVResize
|
|
// in nsHTMLReflowState, they do need to force reflow of the whole subtree.
|
|
// XXXbz due to XUL caching heights as well, height changes also need to
|
|
// clear ancestor intrinsics!
|
|
return NS_CombineHint(hint, nsChangeHint_ReflowFrame);
|
|
}
|
|
|
|
if ((mWidth == aOther.mWidth) &&
|
|
(mMinWidth == aOther.mMinWidth) &&
|
|
(mMaxWidth == aOther.mMaxWidth)) {
|
|
if (mOffset == aOther.mOffset) {
|
|
return hint;
|
|
} else {
|
|
// Offset changes only affect positioned content, and can't affect any
|
|
// intrinsic widths. They also don't need to force reflow of
|
|
// descendants.
|
|
return NS_CombineHint(hint, nsChangeHint_NeedReflow);
|
|
}
|
|
}
|
|
|
|
// None of our width differences can affect descendant intrinsic
|
|
// sizes and none of them need to force children to reflow.
|
|
return
|
|
NS_CombineHint(hint,
|
|
NS_SubtractHint(nsChangeHint_ReflowFrame,
|
|
NS_CombineHint(nsChangeHint_ClearDescendantIntrinsics,
|
|
nsChangeHint_NeedDirtyReflow)));
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStylePosition::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
#endif
|
|
|
|
/* static */ PRBool
|
|
nsStylePosition::WidthCoordDependsOnContainer(const nsStyleCoord &aCoord)
|
|
{
|
|
return aCoord.GetUnit() == eStyleUnit_Auto ||
|
|
aCoord.HasPercent() ||
|
|
(aCoord.GetUnit() == eStyleUnit_Enumerated &&
|
|
(aCoord.GetIntValue() == NS_STYLE_WIDTH_FIT_CONTENT ||
|
|
aCoord.GetIntValue() == NS_STYLE_WIDTH_AVAILABLE));
|
|
}
|
|
|
|
// --------------------
|
|
// nsStyleTable
|
|
//
|
|
|
|
nsStyleTable::nsStyleTable()
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleTable);
|
|
// values not inherited
|
|
mLayoutStrategy = NS_STYLE_TABLE_LAYOUT_AUTO;
|
|
mCols = NS_STYLE_TABLE_COLS_NONE;
|
|
mFrame = NS_STYLE_TABLE_FRAME_NONE;
|
|
mRules = NS_STYLE_TABLE_RULES_NONE;
|
|
mSpan = 1;
|
|
}
|
|
|
|
nsStyleTable::~nsStyleTable(void)
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleTable);
|
|
}
|
|
|
|
nsStyleTable::nsStyleTable(const nsStyleTable& aSource)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleTable);
|
|
memcpy((nsStyleTable*)this, &aSource, sizeof(nsStyleTable));
|
|
}
|
|
|
|
nsChangeHint nsStyleTable::CalcDifference(const nsStyleTable& aOther) const
|
|
{
|
|
// Changes in mRules may require reframing (if border-collapse stuff changes, for example).
|
|
if (mRules != aOther.mRules || mSpan != aOther.mSpan ||
|
|
mLayoutStrategy != aOther.mLayoutStrategy)
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
if (mFrame != aOther.mFrame || mCols != aOther.mCols)
|
|
return NS_STYLE_HINT_REFLOW;
|
|
return NS_STYLE_HINT_NONE;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleTable::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
#endif
|
|
|
|
// -----------------------
|
|
// nsStyleTableBorder
|
|
|
|
nsStyleTableBorder::nsStyleTableBorder(nsPresContext* aPresContext)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleTableBorder);
|
|
mBorderCollapse = NS_STYLE_BORDER_SEPARATE;
|
|
|
|
nsCompatibility compatMode = eCompatibility_FullStandards;
|
|
if (aPresContext)
|
|
compatMode = aPresContext->CompatibilityMode();
|
|
mEmptyCells = (compatMode == eCompatibility_NavQuirks)
|
|
? NS_STYLE_TABLE_EMPTY_CELLS_SHOW_BACKGROUND
|
|
: NS_STYLE_TABLE_EMPTY_CELLS_SHOW;
|
|
mCaptionSide = NS_STYLE_CAPTION_SIDE_TOP;
|
|
mBorderSpacingX = 0;
|
|
mBorderSpacingY = 0;
|
|
}
|
|
|
|
nsStyleTableBorder::~nsStyleTableBorder(void)
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleTableBorder);
|
|
}
|
|
|
|
nsStyleTableBorder::nsStyleTableBorder(const nsStyleTableBorder& aSource)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleTableBorder);
|
|
memcpy((nsStyleTableBorder*)this, &aSource, sizeof(nsStyleTableBorder));
|
|
}
|
|
|
|
nsChangeHint nsStyleTableBorder::CalcDifference(const nsStyleTableBorder& aOther) const
|
|
{
|
|
// Border-collapse changes need a reframe, because we use a different frame
|
|
// class for table cells in the collapsed border model. This is used to
|
|
// conserve memory when using the separated border model (collapsed borders
|
|
// require extra state to be stored).
|
|
if (mBorderCollapse != aOther.mBorderCollapse) {
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
|
|
if ((mCaptionSide == aOther.mCaptionSide) &&
|
|
(mBorderSpacingX == aOther.mBorderSpacingX) &&
|
|
(mBorderSpacingY == aOther.mBorderSpacingY)) {
|
|
if (mEmptyCells == aOther.mEmptyCells)
|
|
return NS_STYLE_HINT_NONE;
|
|
return NS_STYLE_HINT_VISUAL;
|
|
}
|
|
else
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleTableBorder::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
#endif
|
|
|
|
// --------------------
|
|
// nsStyleColor
|
|
//
|
|
|
|
nsStyleColor::nsStyleColor(nsPresContext* aPresContext)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleColor);
|
|
mColor = aPresContext->DefaultColor();
|
|
}
|
|
|
|
nsStyleColor::nsStyleColor(const nsStyleColor& aSource)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleColor);
|
|
mColor = aSource.mColor;
|
|
}
|
|
|
|
nsChangeHint nsStyleColor::CalcDifference(const nsStyleColor& aOther) const
|
|
{
|
|
if (mColor == aOther.mColor)
|
|
return NS_STYLE_HINT_NONE;
|
|
return NS_STYLE_HINT_VISUAL;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleColor::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_VISUAL;
|
|
}
|
|
#endif
|
|
|
|
// --------------------
|
|
// nsStyleGradient
|
|
//
|
|
PRBool
|
|
nsStyleGradient::operator==(const nsStyleGradient& aOther) const
|
|
{
|
|
NS_ABORT_IF_FALSE(mSize == NS_STYLE_GRADIENT_SIZE_FARTHEST_CORNER ||
|
|
mShape != NS_STYLE_GRADIENT_SHAPE_LINEAR,
|
|
"incorrect combination of shape and size");
|
|
NS_ABORT_IF_FALSE(aOther.mSize == NS_STYLE_GRADIENT_SIZE_FARTHEST_CORNER ||
|
|
aOther.mShape != NS_STYLE_GRADIENT_SHAPE_LINEAR,
|
|
"incorrect combination of shape and size");
|
|
|
|
if (mShape != aOther.mShape ||
|
|
mSize != aOther.mSize ||
|
|
mRepeating != aOther.mRepeating ||
|
|
mBgPosX != aOther.mBgPosX ||
|
|
mBgPosY != aOther.mBgPosY ||
|
|
mAngle != aOther.mAngle)
|
|
return PR_FALSE;
|
|
|
|
if (mStops.Length() != aOther.mStops.Length())
|
|
return PR_FALSE;
|
|
|
|
for (PRUint32 i = 0; i < mStops.Length(); i++) {
|
|
if (mStops[i].mLocation != aOther.mStops[i].mLocation ||
|
|
mStops[i].mColor != aOther.mStops[i].mColor)
|
|
return PR_FALSE;
|
|
}
|
|
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsStyleGradient::nsStyleGradient(void)
|
|
: mShape(NS_STYLE_GRADIENT_SHAPE_LINEAR)
|
|
, mSize(NS_STYLE_GRADIENT_SIZE_FARTHEST_CORNER)
|
|
, mRepeating(PR_FALSE)
|
|
{
|
|
}
|
|
|
|
PRBool
|
|
nsStyleGradient::IsOpaque()
|
|
{
|
|
for (PRUint32 i = 0; i < mStops.Length(); i++) {
|
|
if (NS_GET_A(mStops[i].mColor) < 255)
|
|
return PR_FALSE;
|
|
}
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// --------------------
|
|
// nsStyleImage
|
|
//
|
|
|
|
nsStyleImage::nsStyleImage()
|
|
: mType(eStyleImageType_Null)
|
|
, mCropRect(nsnull)
|
|
#ifdef DEBUG
|
|
, mImageTracked(false)
|
|
#endif
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleImage);
|
|
}
|
|
|
|
nsStyleImage::~nsStyleImage()
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleImage);
|
|
if (mType != eStyleImageType_Null)
|
|
SetNull();
|
|
}
|
|
|
|
nsStyleImage::nsStyleImage(const nsStyleImage& aOther)
|
|
: mType(eStyleImageType_Null)
|
|
, mCropRect(nsnull)
|
|
#ifdef DEBUG
|
|
, mImageTracked(false)
|
|
#endif
|
|
{
|
|
// We need our own copy constructor because we don't want
|
|
// to copy the reference count
|
|
MOZ_COUNT_CTOR(nsStyleImage);
|
|
DoCopy(aOther);
|
|
}
|
|
|
|
nsStyleImage&
|
|
nsStyleImage::operator=(const nsStyleImage& aOther)
|
|
{
|
|
if (this != &aOther)
|
|
DoCopy(aOther);
|
|
|
|
return *this;
|
|
}
|
|
|
|
void
|
|
nsStyleImage::DoCopy(const nsStyleImage& aOther)
|
|
{
|
|
SetNull();
|
|
|
|
if (aOther.mType == eStyleImageType_Image)
|
|
SetImageData(aOther.mImage);
|
|
else if (aOther.mType == eStyleImageType_Gradient)
|
|
SetGradientData(aOther.mGradient);
|
|
else if (aOther.mType == eStyleImageType_Element)
|
|
SetElementId(aOther.mElementId);
|
|
|
|
SetCropRect(aOther.mCropRect);
|
|
}
|
|
|
|
void
|
|
nsStyleImage::SetNull()
|
|
{
|
|
NS_ABORT_IF_FALSE(!mImageTracked,
|
|
"Calling SetNull() with image tracked!");
|
|
|
|
if (mType == eStyleImageType_Gradient)
|
|
mGradient->Release();
|
|
else if (mType == eStyleImageType_Image)
|
|
NS_RELEASE(mImage);
|
|
else if (mType == eStyleImageType_Element)
|
|
nsCRT::free(mElementId);
|
|
|
|
mType = eStyleImageType_Null;
|
|
mCropRect = nsnull;
|
|
}
|
|
|
|
void
|
|
nsStyleImage::SetImageData(imgIRequest* aImage)
|
|
{
|
|
NS_ABORT_IF_FALSE(!mImageTracked,
|
|
"Setting a new image without untracking the old one!");
|
|
|
|
NS_IF_ADDREF(aImage);
|
|
|
|
if (mType != eStyleImageType_Null)
|
|
SetNull();
|
|
|
|
if (aImage) {
|
|
mImage = aImage;
|
|
mType = eStyleImageType_Image;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsStyleImage::TrackImage(nsPresContext* aContext)
|
|
{
|
|
// Sanity
|
|
NS_ABORT_IF_FALSE(!mImageTracked, "Already tracking image!");
|
|
NS_ABORT_IF_FALSE(mType == eStyleImageType_Image,
|
|
"Can't track image when there isn't one!");
|
|
|
|
// Register the image with the document
|
|
nsIDocument* doc = aContext->Document();
|
|
if (doc)
|
|
doc->AddImage(mImage);
|
|
|
|
// Mark state
|
|
#ifdef DEBUG
|
|
mImageTracked = true;
|
|
#endif
|
|
}
|
|
|
|
void
|
|
nsStyleImage::UntrackImage(nsPresContext* aContext)
|
|
{
|
|
// Sanity
|
|
NS_ABORT_IF_FALSE(mImageTracked, "Image not tracked!");
|
|
NS_ABORT_IF_FALSE(mType == eStyleImageType_Image,
|
|
"Can't untrack image when there isn't one!");
|
|
|
|
// Unregister the image with the document
|
|
nsIDocument* doc = aContext->Document();
|
|
if (doc)
|
|
doc->RemoveImage(mImage);
|
|
|
|
// Mark state
|
|
#ifdef DEBUG
|
|
mImageTracked = false;
|
|
#endif
|
|
}
|
|
|
|
void
|
|
nsStyleImage::SetGradientData(nsStyleGradient* aGradient)
|
|
{
|
|
if (aGradient)
|
|
aGradient->AddRef();
|
|
|
|
if (mType != eStyleImageType_Null)
|
|
SetNull();
|
|
|
|
if (aGradient) {
|
|
mGradient = aGradient;
|
|
mType = eStyleImageType_Gradient;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsStyleImage::SetElementId(const PRUnichar* aElementId)
|
|
{
|
|
if (mType != eStyleImageType_Null)
|
|
SetNull();
|
|
|
|
if (aElementId) {
|
|
mElementId = nsCRT::strdup(aElementId);
|
|
mType = eStyleImageType_Element;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsStyleImage::SetCropRect(nsStyleSides* aCropRect)
|
|
{
|
|
if (aCropRect) {
|
|
mCropRect = new nsStyleSides(*aCropRect);
|
|
// There is really not much we can do if 'new' fails
|
|
} else {
|
|
mCropRect = nsnull;
|
|
}
|
|
}
|
|
|
|
static PRInt32
|
|
ConvertToPixelCoord(const nsStyleCoord& aCoord, PRInt32 aPercentScale)
|
|
{
|
|
double pixelValue;
|
|
switch (aCoord.GetUnit()) {
|
|
case eStyleUnit_Percent:
|
|
pixelValue = aCoord.GetPercentValue() * aPercentScale;
|
|
break;
|
|
case eStyleUnit_Factor:
|
|
pixelValue = aCoord.GetFactorValue();
|
|
break;
|
|
default:
|
|
NS_NOTREACHED("unexpected unit for image crop rect");
|
|
return 0;
|
|
}
|
|
NS_ABORT_IF_FALSE(pixelValue >= 0, "we ensured non-negative while parsing");
|
|
pixelValue = NS_MIN(pixelValue, double(PR_INT32_MAX)); // avoid overflow
|
|
return NS_lround(pixelValue);
|
|
}
|
|
|
|
PRBool
|
|
nsStyleImage::ComputeActualCropRect(nsIntRect& aActualCropRect,
|
|
PRBool* aIsEntireImage) const
|
|
{
|
|
if (mType != eStyleImageType_Image)
|
|
return PR_FALSE;
|
|
|
|
nsCOMPtr<imgIContainer> imageContainer;
|
|
mImage->GetImage(getter_AddRefs(imageContainer));
|
|
if (!imageContainer)
|
|
return PR_FALSE;
|
|
|
|
nsIntSize imageSize;
|
|
imageContainer->GetWidth(&imageSize.width);
|
|
imageContainer->GetHeight(&imageSize.height);
|
|
if (imageSize.width <= 0 || imageSize.height <= 0)
|
|
return PR_FALSE;
|
|
|
|
PRInt32 left = ConvertToPixelCoord(mCropRect->GetLeft(), imageSize.width);
|
|
PRInt32 top = ConvertToPixelCoord(mCropRect->GetTop(), imageSize.height);
|
|
PRInt32 right = ConvertToPixelCoord(mCropRect->GetRight(), imageSize.width);
|
|
PRInt32 bottom = ConvertToPixelCoord(mCropRect->GetBottom(), imageSize.height);
|
|
|
|
// IntersectRect() returns an empty rect if we get negative width or height
|
|
nsIntRect cropRect(left, top, right - left, bottom - top);
|
|
nsIntRect imageRect(nsIntPoint(0, 0), imageSize);
|
|
aActualCropRect.IntersectRect(imageRect, cropRect);
|
|
|
|
if (aIsEntireImage)
|
|
*aIsEntireImage = (aActualCropRect == imageRect);
|
|
return PR_TRUE;
|
|
}
|
|
|
|
nsresult
|
|
nsStyleImage::RequestDecode() const
|
|
{
|
|
if ((mType == eStyleImageType_Image) && mImage)
|
|
return mImage->RequestDecode();
|
|
return NS_OK;
|
|
}
|
|
|
|
PRBool
|
|
nsStyleImage::IsOpaque() const
|
|
{
|
|
if (!IsComplete())
|
|
return PR_FALSE;
|
|
|
|
if (mType == eStyleImageType_Gradient)
|
|
return mGradient->IsOpaque();
|
|
|
|
if (mType == eStyleImageType_Element)
|
|
return PR_FALSE;
|
|
|
|
NS_ABORT_IF_FALSE(mType == eStyleImageType_Image, "unexpected image type");
|
|
|
|
nsCOMPtr<imgIContainer> imageContainer;
|
|
mImage->GetImage(getter_AddRefs(imageContainer));
|
|
NS_ABORT_IF_FALSE(imageContainer, "IsComplete() said image container is ready");
|
|
|
|
// Check if the crop region of the current image frame is opaque
|
|
PRBool isOpaque;
|
|
if (NS_SUCCEEDED(imageContainer->GetCurrentFrameIsOpaque(&isOpaque)) &&
|
|
isOpaque) {
|
|
if (!mCropRect)
|
|
return PR_TRUE;
|
|
|
|
// Must make sure if mCropRect contains at least a pixel.
|
|
// XXX Is this optimization worth it? Maybe I should just return PR_FALSE.
|
|
nsIntRect actualCropRect;
|
|
PRBool rv = ComputeActualCropRect(actualCropRect);
|
|
NS_ASSERTION(rv, "ComputeActualCropRect() can not fail here");
|
|
return rv && !actualCropRect.IsEmpty();
|
|
}
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool
|
|
nsStyleImage::IsComplete() const
|
|
{
|
|
switch (mType) {
|
|
case eStyleImageType_Null:
|
|
return PR_FALSE;
|
|
case eStyleImageType_Gradient:
|
|
case eStyleImageType_Element:
|
|
return PR_TRUE;
|
|
case eStyleImageType_Image:
|
|
{
|
|
PRUint32 status = imgIRequest::STATUS_ERROR;
|
|
return NS_SUCCEEDED(mImage->GetImageStatus(&status)) &&
|
|
(status & imgIRequest::STATUS_SIZE_AVAILABLE) &&
|
|
(status & imgIRequest::STATUS_FRAME_COMPLETE);
|
|
}
|
|
default:
|
|
NS_NOTREACHED("unexpected image type");
|
|
return PR_FALSE;
|
|
}
|
|
}
|
|
|
|
static inline PRBool
|
|
EqualRects(const nsStyleSides* aRect1, const nsStyleSides* aRect2)
|
|
{
|
|
return aRect1 == aRect2 || /* handles null== null, and optimize */
|
|
(aRect1 && aRect2 && *aRect1 == *aRect2);
|
|
}
|
|
|
|
PRBool
|
|
nsStyleImage::operator==(const nsStyleImage& aOther) const
|
|
{
|
|
if (mType != aOther.mType)
|
|
return PR_FALSE;
|
|
|
|
if (!EqualRects(mCropRect, aOther.mCropRect))
|
|
return PR_FALSE;
|
|
|
|
if (mType == eStyleImageType_Image)
|
|
return EqualImages(mImage, aOther.mImage);
|
|
|
|
if (mType == eStyleImageType_Gradient)
|
|
return *mGradient == *aOther.mGradient;
|
|
|
|
if (mType == eStyleImageType_Element)
|
|
return nsCRT::strcmp(mElementId, aOther.mElementId) == 0;
|
|
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// --------------------
|
|
// nsStyleBackground
|
|
//
|
|
|
|
nsStyleBackground::nsStyleBackground()
|
|
: mAttachmentCount(1)
|
|
, mClipCount(1)
|
|
, mOriginCount(1)
|
|
, mRepeatCount(1)
|
|
, mPositionCount(1)
|
|
, mImageCount(1)
|
|
, mSizeCount(1)
|
|
, mBackgroundColor(NS_RGBA(0, 0, 0, 0))
|
|
, mBackgroundInlinePolicy(NS_STYLE_BG_INLINE_POLICY_CONTINUOUS)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleBackground);
|
|
Layer *onlyLayer = mLayers.AppendElement();
|
|
NS_ASSERTION(onlyLayer, "auto array must have room for 1 element");
|
|
onlyLayer->SetInitialValues();
|
|
}
|
|
|
|
nsStyleBackground::nsStyleBackground(const nsStyleBackground& aSource)
|
|
: mAttachmentCount(aSource.mAttachmentCount)
|
|
, mClipCount(aSource.mClipCount)
|
|
, mOriginCount(aSource.mOriginCount)
|
|
, mRepeatCount(aSource.mRepeatCount)
|
|
, mPositionCount(aSource.mPositionCount)
|
|
, mImageCount(aSource.mImageCount)
|
|
, mSizeCount(aSource.mSizeCount)
|
|
, mLayers(aSource.mLayers) // deep copy
|
|
, mBackgroundColor(aSource.mBackgroundColor)
|
|
, mBackgroundInlinePolicy(aSource.mBackgroundInlinePolicy)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleBackground);
|
|
// If the deep copy of mLayers failed, truncate the counts.
|
|
PRUint32 count = mLayers.Length();
|
|
if (count != aSource.mLayers.Length()) {
|
|
NS_WARNING("truncating counts due to out-of-memory");
|
|
mAttachmentCount = NS_MAX(mAttachmentCount, count);
|
|
mClipCount = NS_MAX(mClipCount, count);
|
|
mOriginCount = NS_MAX(mOriginCount, count);
|
|
mRepeatCount = NS_MAX(mRepeatCount, count);
|
|
mPositionCount = NS_MAX(mPositionCount, count);
|
|
mImageCount = NS_MAX(mImageCount, count);
|
|
mSizeCount = NS_MAX(mSizeCount, count);
|
|
}
|
|
}
|
|
|
|
nsStyleBackground::~nsStyleBackground()
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleBackground);
|
|
}
|
|
|
|
void
|
|
nsStyleBackground::Destroy(nsPresContext* aContext)
|
|
{
|
|
// Untrack all the images stored in our layers
|
|
for (PRUint32 i = 0; i < mImageCount; ++i)
|
|
mLayers[i].UntrackImages(aContext);
|
|
|
|
this->~nsStyleBackground();
|
|
aContext->FreeToShell(sizeof(nsStyleBackground), this);
|
|
}
|
|
|
|
nsChangeHint nsStyleBackground::CalcDifference(const nsStyleBackground& aOther) const
|
|
{
|
|
const nsStyleBackground* moreLayers =
|
|
mImageCount > aOther.mImageCount ? this : &aOther;
|
|
const nsStyleBackground* lessLayers =
|
|
mImageCount > aOther.mImageCount ? &aOther : this;
|
|
|
|
bool hasVisualDifference = false;
|
|
|
|
NS_FOR_VISIBLE_BACKGROUND_LAYERS_BACK_TO_FRONT(i, moreLayers) {
|
|
if (i < lessLayers->mImageCount) {
|
|
if (moreLayers->mLayers[i] != lessLayers->mLayers[i]) {
|
|
if ((moreLayers->mLayers[i].mImage.GetType() == eStyleImageType_Element) ||
|
|
(lessLayers->mLayers[i].mImage.GetType() == eStyleImageType_Element))
|
|
return NS_CombineHint(nsChangeHint_UpdateEffects, NS_STYLE_HINT_VISUAL);
|
|
hasVisualDifference = true;
|
|
}
|
|
} else {
|
|
if (moreLayers->mLayers[i].mImage.GetType() == eStyleImageType_Element)
|
|
return NS_CombineHint(nsChangeHint_UpdateEffects, NS_STYLE_HINT_VISUAL);
|
|
hasVisualDifference = true;
|
|
}
|
|
}
|
|
|
|
if (hasVisualDifference ||
|
|
mBackgroundColor != aOther.mBackgroundColor ||
|
|
mBackgroundInlinePolicy != aOther.mBackgroundInlinePolicy)
|
|
return NS_STYLE_HINT_VISUAL;
|
|
|
|
return NS_STYLE_HINT_NONE;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleBackground::MaxDifference()
|
|
{
|
|
return NS_CombineHint(nsChangeHint_UpdateEffects, NS_STYLE_HINT_VISUAL);
|
|
}
|
|
#endif
|
|
|
|
PRBool nsStyleBackground::HasFixedBackground() const
|
|
{
|
|
NS_FOR_VISIBLE_BACKGROUND_LAYERS_BACK_TO_FRONT(i, this) {
|
|
const Layer &layer = mLayers[i];
|
|
if (layer.mAttachment == NS_STYLE_BG_ATTACHMENT_FIXED &&
|
|
!layer.mImage.IsEmpty()) {
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool nsStyleBackground::IsTransparent() const
|
|
{
|
|
return BottomLayer().mImage.IsEmpty() &&
|
|
mImageCount == 1 &&
|
|
NS_GET_A(mBackgroundColor) == 0;
|
|
}
|
|
|
|
void
|
|
nsStyleBackground::Position::SetInitialValues()
|
|
{
|
|
mXPosition.mPercent = 0.0f;
|
|
mXPosition.mLength = 0;
|
|
mYPosition.mPercent = 0.0f;
|
|
mYPosition.mLength = 0;
|
|
}
|
|
|
|
void
|
|
nsStyleBackground::Size::SetInitialValues()
|
|
{
|
|
mWidthType = mHeightType = eAuto;
|
|
}
|
|
|
|
bool
|
|
nsStyleBackground::Size::operator==(const Size& aOther) const
|
|
{
|
|
NS_ABORT_IF_FALSE(mWidthType < eDimensionType_COUNT,
|
|
"bad mWidthType for this");
|
|
NS_ABORT_IF_FALSE(mHeightType < eDimensionType_COUNT,
|
|
"bad mHeightType for this");
|
|
NS_ABORT_IF_FALSE(aOther.mWidthType < eDimensionType_COUNT,
|
|
"bad mWidthType for aOther");
|
|
NS_ABORT_IF_FALSE(aOther.mHeightType < eDimensionType_COUNT,
|
|
"bad mHeightType for aOther");
|
|
|
|
return mWidthType == aOther.mWidthType &&
|
|
mHeightType == aOther.mHeightType &&
|
|
(mWidthType != eLengthPercentage || mWidth == aOther.mWidth) &&
|
|
(mHeightType != eLengthPercentage || mHeight == aOther.mHeight);
|
|
}
|
|
|
|
nsStyleBackground::Layer::Layer()
|
|
{
|
|
}
|
|
|
|
nsStyleBackground::Layer::~Layer()
|
|
{
|
|
}
|
|
|
|
void
|
|
nsStyleBackground::Layer::SetInitialValues()
|
|
{
|
|
mAttachment = NS_STYLE_BG_ATTACHMENT_SCROLL;
|
|
mClip = NS_STYLE_BG_CLIP_BORDER;
|
|
mOrigin = NS_STYLE_BG_ORIGIN_PADDING;
|
|
mRepeat = NS_STYLE_BG_REPEAT_XY;
|
|
mPosition.SetInitialValues();
|
|
mSize.SetInitialValues();
|
|
mImage.SetNull();
|
|
}
|
|
|
|
PRBool
|
|
nsStyleBackground::Layer::RenderingMightDependOnFrameSize() const
|
|
{
|
|
// Do we even have an image?
|
|
if (mImage.IsEmpty()) {
|
|
return PR_FALSE;
|
|
}
|
|
|
|
// Does our position or size depend on frame size?
|
|
if (mPosition.DependsOnFrameSize() ||
|
|
mSize.DependsOnFrameSize(mImage.GetType())) {
|
|
return PR_TRUE;
|
|
}
|
|
|
|
// Are we an SVG image with a viewBox attribute?
|
|
if (mImage.GetType() == eStyleImageType_Image) {
|
|
nsCOMPtr<imgIContainer> imageContainer;
|
|
mImage.GetImageData()->GetImage(getter_AddRefs(imageContainer));
|
|
if (imageContainer &&
|
|
imageContainer->GetType() == imgIContainer::TYPE_VECTOR) {
|
|
nsIFrame* rootFrame = imageContainer->GetRootLayoutFrame();
|
|
if (rootFrame &&
|
|
nsSVGUtils::RootSVGElementHasViewbox(rootFrame->GetContent())) {
|
|
return PR_TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return PR_FALSE;
|
|
}
|
|
|
|
PRBool
|
|
nsStyleBackground::Layer::operator==(const Layer& aOther) const
|
|
{
|
|
return mAttachment == aOther.mAttachment &&
|
|
mClip == aOther.mClip &&
|
|
mOrigin == aOther.mOrigin &&
|
|
mRepeat == aOther.mRepeat &&
|
|
mPosition == aOther.mPosition &&
|
|
mSize == aOther.mSize &&
|
|
mImage == aOther.mImage;
|
|
}
|
|
|
|
// --------------------
|
|
// nsStyleDisplay
|
|
//
|
|
void nsTimingFunction::AssignFromKeyword(PRInt32 aTimingFunctionType)
|
|
{
|
|
PR_STATIC_ASSERT(NS_STYLE_TRANSITION_TIMING_FUNCTION_EASE == 0);
|
|
PR_STATIC_ASSERT(NS_STYLE_TRANSITION_TIMING_FUNCTION_LINEAR == 1);
|
|
PR_STATIC_ASSERT(NS_STYLE_TRANSITION_TIMING_FUNCTION_EASE_IN == 2);
|
|
PR_STATIC_ASSERT(NS_STYLE_TRANSITION_TIMING_FUNCTION_EASE_OUT == 3);
|
|
PR_STATIC_ASSERT(NS_STYLE_TRANSITION_TIMING_FUNCTION_EASE_IN_OUT == 4);
|
|
|
|
static const float timingFunctionValues[5][4] = {
|
|
{ 0.25, 0.10, 0.25, 1.00 }, // ease
|
|
{ 0.00, 0.00, 1.00, 1.00 }, // linear
|
|
{ 0.42, 0.00, 1.00, 1.00 }, // ease-in
|
|
{ 0.00, 0.00, 0.58, 1.00 }, // ease-out
|
|
{ 0.42, 0.00, 0.58, 1.00 } // ease-in-out
|
|
};
|
|
|
|
NS_ABORT_IF_FALSE(0 <= aTimingFunctionType && aTimingFunctionType < 5,
|
|
"keyword out of range");
|
|
mX1 = timingFunctionValues[aTimingFunctionType][0];
|
|
mY1 = timingFunctionValues[aTimingFunctionType][1];
|
|
mX2 = timingFunctionValues[aTimingFunctionType][2];
|
|
mY2 = timingFunctionValues[aTimingFunctionType][3];
|
|
}
|
|
|
|
nsTransition::nsTransition(const nsTransition& aCopy)
|
|
: mTimingFunction(aCopy.mTimingFunction)
|
|
, mDuration(aCopy.mDuration)
|
|
, mDelay(aCopy.mDelay)
|
|
, mProperty(aCopy.mProperty)
|
|
, mUnknownProperty(aCopy.mUnknownProperty)
|
|
{
|
|
}
|
|
|
|
void nsTransition::SetInitialValues()
|
|
{
|
|
mTimingFunction = nsTimingFunction(NS_STYLE_TRANSITION_TIMING_FUNCTION_EASE);
|
|
mDuration = 0.0;
|
|
mDelay = 0.0;
|
|
mProperty = eCSSPropertyExtra_all_properties;
|
|
}
|
|
|
|
void nsTransition::SetUnknownProperty(const nsAString& aUnknownProperty)
|
|
{
|
|
NS_ASSERTION(nsCSSProps::LookupProperty(aUnknownProperty) ==
|
|
eCSSProperty_UNKNOWN,
|
|
"should be unknown property");
|
|
mProperty = eCSSProperty_UNKNOWN;
|
|
mUnknownProperty = do_GetAtom(aUnknownProperty);
|
|
}
|
|
|
|
nsStyleDisplay::nsStyleDisplay()
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleDisplay);
|
|
mAppearance = NS_THEME_NONE;
|
|
mDisplay = NS_STYLE_DISPLAY_INLINE;
|
|
mOriginalDisplay = NS_STYLE_DISPLAY_NONE;
|
|
mPosition = NS_STYLE_POSITION_STATIC;
|
|
mFloats = NS_STYLE_FLOAT_NONE;
|
|
mBreakType = NS_STYLE_CLEAR_NONE;
|
|
mBreakBefore = PR_FALSE;
|
|
mBreakAfter = PR_FALSE;
|
|
mOverflowX = NS_STYLE_OVERFLOW_VISIBLE;
|
|
mOverflowY = NS_STYLE_OVERFLOW_VISIBLE;
|
|
mResize = NS_STYLE_RESIZE_NONE;
|
|
mClipFlags = NS_STYLE_CLIP_AUTO;
|
|
mClip.SetRect(0,0,0,0);
|
|
mOpacity = 1.0f;
|
|
mSpecifiedTransform = nsnull;
|
|
mTransformOrigin[0].SetPercentValue(0.5f); // Transform is centered on origin
|
|
mTransformOrigin[1].SetPercentValue(0.5f);
|
|
mTransitions.AppendElement();
|
|
NS_ABORT_IF_FALSE(mTransitions.Length() == 1,
|
|
"appending within auto buffer should never fail");
|
|
mTransitions[0].SetInitialValues();
|
|
mTransitionTimingFunctionCount = 1;
|
|
mTransitionDurationCount = 1;
|
|
mTransitionDelayCount = 1;
|
|
mTransitionPropertyCount = 1;
|
|
}
|
|
|
|
nsStyleDisplay::nsStyleDisplay(const nsStyleDisplay& aSource)
|
|
: mTransitions(aSource.mTransitions)
|
|
, mTransitionTimingFunctionCount(aSource.mTransitionTimingFunctionCount)
|
|
, mTransitionDurationCount(aSource.mTransitionDurationCount)
|
|
, mTransitionDelayCount(aSource.mTransitionDelayCount)
|
|
, mTransitionPropertyCount(aSource.mTransitionPropertyCount)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleDisplay);
|
|
mAppearance = aSource.mAppearance;
|
|
mDisplay = aSource.mDisplay;
|
|
mOriginalDisplay = aSource.mOriginalDisplay;
|
|
mBinding = aSource.mBinding;
|
|
mPosition = aSource.mPosition;
|
|
mFloats = aSource.mFloats;
|
|
mBreakType = aSource.mBreakType;
|
|
mBreakBefore = aSource.mBreakBefore;
|
|
mBreakAfter = aSource.mBreakAfter;
|
|
mOverflowX = aSource.mOverflowX;
|
|
mOverflowY = aSource.mOverflowY;
|
|
mResize = aSource.mResize;
|
|
mClipFlags = aSource.mClipFlags;
|
|
mClip = aSource.mClip;
|
|
mOpacity = aSource.mOpacity;
|
|
|
|
/* Copy over the transformation information. */
|
|
mSpecifiedTransform = aSource.mSpecifiedTransform;
|
|
if (mSpecifiedTransform)
|
|
mTransform = aSource.mTransform;
|
|
|
|
/* Copy over transform origin. */
|
|
mTransformOrigin[0] = aSource.mTransformOrigin[0];
|
|
mTransformOrigin[1] = aSource.mTransformOrigin[1];
|
|
}
|
|
|
|
nsChangeHint nsStyleDisplay::CalcDifference(const nsStyleDisplay& aOther) const
|
|
{
|
|
nsChangeHint hint = nsChangeHint(0);
|
|
|
|
if (!EqualURIs(mBinding, aOther.mBinding)
|
|
|| mPosition != aOther.mPosition
|
|
|| mDisplay != aOther.mDisplay
|
|
|| (mFloats == NS_STYLE_FLOAT_NONE) != (aOther.mFloats == NS_STYLE_FLOAT_NONE)
|
|
|| (mOverflowX != aOther.mOverflowX && mDisplay != NS_STYLE_DISPLAY_INLINE)
|
|
|| (mOverflowY != aOther.mOverflowY && mDisplay != NS_STYLE_DISPLAY_INLINE)
|
|
|| mResize != aOther.mResize)
|
|
NS_UpdateHint(hint, nsChangeHint_ReconstructFrame);
|
|
|
|
if (mFloats != aOther.mFloats) {
|
|
// Changing which side we float on doesn't affect descendants directly
|
|
NS_UpdateHint(hint,
|
|
NS_SubtractHint(nsChangeHint_ReflowFrame,
|
|
NS_CombineHint(nsChangeHint_ClearDescendantIntrinsics,
|
|
nsChangeHint_NeedDirtyReflow)));
|
|
}
|
|
|
|
// XXX the following is conservative, for now: changing float breaking shouldn't
|
|
// necessarily require a repaint, reflow should suffice.
|
|
if (mBreakType != aOther.mBreakType
|
|
|| mBreakBefore != aOther.mBreakBefore
|
|
|| mBreakAfter != aOther.mBreakAfter
|
|
|| mAppearance != aOther.mAppearance
|
|
|| mClipFlags != aOther.mClipFlags || mClip != aOther.mClip)
|
|
NS_UpdateHint(hint, NS_CombineHint(nsChangeHint_ReflowFrame, nsChangeHint_RepaintFrame));
|
|
|
|
if (mOpacity != aOther.mOpacity) {
|
|
NS_UpdateHint(hint, nsChangeHint_UpdateOpacityLayer);
|
|
}
|
|
|
|
/* If we've added or removed the transform property, we need to reconstruct the frame to add
|
|
* or remove the view object, and also to handle abs-pos and fixed-pos containers.
|
|
*/
|
|
if (HasTransform() != aOther.HasTransform()) {
|
|
NS_UpdateHint(hint, nsChangeHint_ReconstructFrame);
|
|
}
|
|
else if (HasTransform()) {
|
|
/* Otherwise, if we've kept the property lying around and we already had a
|
|
* transform, we need to see whether or not we've changed the transform.
|
|
* If so, we need to do a reflow and a repaint. The reflow is to recompute
|
|
* the overflow rect (which probably changed if the transform changed)
|
|
* and to redraw within the bounds of that new overflow rect.
|
|
*/
|
|
if (mTransform != aOther.mTransform)
|
|
NS_UpdateHint(hint, NS_CombineHint(nsChangeHint_ReflowFrame,
|
|
nsChangeHint_UpdateTransformLayer));
|
|
|
|
for (PRUint8 index = 0; index < 2; ++index)
|
|
if (mTransformOrigin[index] != aOther.mTransformOrigin[index]) {
|
|
NS_UpdateHint(hint, NS_CombineHint(nsChangeHint_ReflowFrame,
|
|
nsChangeHint_RepaintFrame));
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Note: Our current behavior for handling changes to the
|
|
// transition-duration, transition-delay, and transition-timing-function
|
|
// properties is to do nothing. In other words, the transition
|
|
// property that matters is what it is when the transition begins, and
|
|
// we don't stop a transition later because the transition property
|
|
// changed.
|
|
// We do handle changes to transition-property, but we don't need to
|
|
// bother with anything here, since the transition manager is notified
|
|
// of any style context change anyway.
|
|
|
|
return hint;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleDisplay::MaxDifference()
|
|
{
|
|
// All the parts of FRAMECHANGE are present above in CalcDifference.
|
|
return nsChangeHint(NS_STYLE_HINT_FRAMECHANGE | nsChangeHint_UpdateOpacityLayer |
|
|
nsChangeHint_UpdateTransformLayer);
|
|
}
|
|
#endif
|
|
|
|
// --------------------
|
|
// nsStyleVisibility
|
|
//
|
|
|
|
nsStyleVisibility::nsStyleVisibility(nsPresContext* aPresContext)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleVisibility);
|
|
PRUint32 bidiOptions = aPresContext->GetBidi();
|
|
if (GET_BIDI_OPTION_DIRECTION(bidiOptions) == IBMBIDI_TEXTDIRECTION_RTL)
|
|
mDirection = NS_STYLE_DIRECTION_RTL;
|
|
else
|
|
mDirection = NS_STYLE_DIRECTION_LTR;
|
|
|
|
nsAutoString language;
|
|
aPresContext->Document()->GetContentLanguage(language);
|
|
language.StripWhitespace();
|
|
|
|
// Content-Language may be a comma-separated list of language codes,
|
|
// in which case the HTML5 spec says to treat it as unknown
|
|
if (!language.IsEmpty() &&
|
|
language.FindChar(PRUnichar(',')) == kNotFound) {
|
|
mLanguage = do_GetAtom(language);
|
|
} else {
|
|
// we didn't find a (usable) Content-Language, so we fall back
|
|
// to whatever the presContext guessed from the charset
|
|
mLanguage = aPresContext->GetLanguageFromCharset();
|
|
}
|
|
|
|
mVisible = NS_STYLE_VISIBILITY_VISIBLE;
|
|
mPointerEvents = NS_STYLE_POINTER_EVENTS_AUTO;
|
|
}
|
|
|
|
nsStyleVisibility::nsStyleVisibility(const nsStyleVisibility& aSource)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleVisibility);
|
|
mDirection = aSource.mDirection;
|
|
mVisible = aSource.mVisible;
|
|
mLanguage = aSource.mLanguage;
|
|
mPointerEvents = aSource.mPointerEvents;
|
|
}
|
|
|
|
nsChangeHint nsStyleVisibility::CalcDifference(const nsStyleVisibility& aOther) const
|
|
{
|
|
nsChangeHint hint = nsChangeHint(0);
|
|
|
|
if (mDirection != aOther.mDirection) {
|
|
NS_UpdateHint(hint, nsChangeHint_ReconstructFrame);
|
|
} else if (mLanguage == aOther.mLanguage) {
|
|
if (mVisible != aOther.mVisible) {
|
|
if ((NS_STYLE_VISIBILITY_COLLAPSE == mVisible) ||
|
|
(NS_STYLE_VISIBILITY_COLLAPSE == aOther.mVisible)) {
|
|
NS_UpdateHint(hint, NS_STYLE_HINT_REFLOW);
|
|
} else {
|
|
NS_UpdateHint(hint, NS_STYLE_HINT_VISUAL);
|
|
}
|
|
}
|
|
} else {
|
|
NS_UpdateHint(hint, NS_STYLE_HINT_REFLOW);
|
|
}
|
|
return hint;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleVisibility::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
#endif
|
|
|
|
nsStyleContentData::~nsStyleContentData()
|
|
{
|
|
NS_ABORT_IF_FALSE(!mImageTracked,
|
|
"nsStyleContentData being destroyed while still tracking image!");
|
|
if (mType == eStyleContentType_Image) {
|
|
NS_IF_RELEASE(mContent.mImage);
|
|
} else if (mType == eStyleContentType_Counter ||
|
|
mType == eStyleContentType_Counters) {
|
|
mContent.mCounters->Release();
|
|
} else if (mContent.mString) {
|
|
NS_Free(mContent.mString);
|
|
}
|
|
}
|
|
|
|
nsStyleContentData& nsStyleContentData::operator=(const nsStyleContentData& aOther)
|
|
{
|
|
if (this == &aOther)
|
|
return *this;
|
|
this->~nsStyleContentData();
|
|
new (this) nsStyleContentData();
|
|
|
|
mType = aOther.mType;
|
|
if (mType == eStyleContentType_Image) {
|
|
mContent.mImage = aOther.mContent.mImage;
|
|
NS_IF_ADDREF(mContent.mImage);
|
|
} else if (mType == eStyleContentType_Counter ||
|
|
mType == eStyleContentType_Counters) {
|
|
mContent.mCounters = aOther.mContent.mCounters;
|
|
mContent.mCounters->AddRef();
|
|
} else if (aOther.mContent.mString) {
|
|
mContent.mString = NS_strdup(aOther.mContent.mString);
|
|
} else {
|
|
mContent.mString = nsnull;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
PRBool nsStyleContentData::operator==(const nsStyleContentData& aOther) const
|
|
{
|
|
if (mType != aOther.mType)
|
|
return PR_FALSE;
|
|
if (mType == eStyleContentType_Image) {
|
|
if (!mContent.mImage || !aOther.mContent.mImage)
|
|
return mContent.mImage == aOther.mContent.mImage;
|
|
PRBool eq;
|
|
nsCOMPtr<nsIURI> thisURI, otherURI;
|
|
mContent.mImage->GetURI(getter_AddRefs(thisURI));
|
|
aOther.mContent.mImage->GetURI(getter_AddRefs(otherURI));
|
|
return thisURI == otherURI || // handles null==null
|
|
(thisURI && otherURI &&
|
|
NS_SUCCEEDED(thisURI->Equals(otherURI, &eq)) &&
|
|
eq);
|
|
}
|
|
if (mType == eStyleContentType_Counter ||
|
|
mType == eStyleContentType_Counters)
|
|
return *mContent.mCounters == *aOther.mContent.mCounters;
|
|
return nsCRT::strcmp(mContent.mString, aOther.mContent.mString) == 0;
|
|
}
|
|
|
|
void
|
|
nsStyleContentData::TrackImage(nsPresContext* aContext)
|
|
{
|
|
// Sanity
|
|
NS_ABORT_IF_FALSE(!mImageTracked, "Already tracking image!");
|
|
NS_ABORT_IF_FALSE(mType == eStyleContentType_Image,
|
|
"Tryingto do image tracking on non-image!");
|
|
NS_ABORT_IF_FALSE(mContent.mImage,
|
|
"Can't track image when there isn't one!");
|
|
|
|
// Register the image with the document
|
|
nsIDocument* doc = aContext->Document();
|
|
if (doc)
|
|
doc->AddImage(mContent.mImage);
|
|
|
|
// Mark state
|
|
#ifdef DEBUG
|
|
mImageTracked = true;
|
|
#endif
|
|
}
|
|
|
|
void
|
|
nsStyleContentData::UntrackImage(nsPresContext* aContext)
|
|
{
|
|
// Sanity
|
|
NS_ABORT_IF_FALSE(mImageTracked, "Image not tracked!");
|
|
NS_ABORT_IF_FALSE(mType == eStyleContentType_Image,
|
|
"Trying to do image tracking on non-image!");
|
|
NS_ABORT_IF_FALSE(mContent.mImage,
|
|
"Can't untrack image when there isn't one!");
|
|
|
|
// Unregister the image with the document
|
|
nsIDocument* doc = aContext->Document();
|
|
if (doc)
|
|
doc->RemoveImage(mContent.mImage);
|
|
|
|
// Mark state
|
|
#ifdef DEBUG
|
|
mImageTracked = false;
|
|
#endif
|
|
}
|
|
|
|
|
|
//-----------------------
|
|
// nsStyleContent
|
|
//
|
|
|
|
nsStyleContent::nsStyleContent(void)
|
|
: mMarkerOffset(),
|
|
mContents(nsnull),
|
|
mIncrements(nsnull),
|
|
mResets(nsnull),
|
|
mContentCount(0),
|
|
mIncrementCount(0),
|
|
mResetCount(0)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleContent);
|
|
mMarkerOffset.SetAutoValue();
|
|
}
|
|
|
|
nsStyleContent::~nsStyleContent(void)
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleContent);
|
|
DELETE_ARRAY_IF(mContents);
|
|
DELETE_ARRAY_IF(mIncrements);
|
|
DELETE_ARRAY_IF(mResets);
|
|
}
|
|
|
|
void
|
|
nsStyleContent::Destroy(nsPresContext* aContext)
|
|
{
|
|
// Unregister any images we might have with the document.
|
|
for (PRUint32 i = 0; i < mContentCount; ++i) {
|
|
if ((mContents[i].mType == eStyleContentType_Image) &&
|
|
mContents[i].mContent.mImage) {
|
|
mContents[i].UntrackImage(aContext);
|
|
}
|
|
}
|
|
|
|
this->~nsStyleContent();
|
|
aContext->FreeToShell(sizeof(nsStyleContent), this);
|
|
}
|
|
|
|
nsStyleContent::nsStyleContent(const nsStyleContent& aSource)
|
|
:mMarkerOffset(),
|
|
mContents(nsnull),
|
|
mIncrements(nsnull),
|
|
mResets(nsnull),
|
|
mContentCount(0),
|
|
mIncrementCount(0),
|
|
mResetCount(0)
|
|
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleContent);
|
|
mMarkerOffset = aSource.mMarkerOffset;
|
|
|
|
PRUint32 index;
|
|
if (NS_SUCCEEDED(AllocateContents(aSource.ContentCount()))) {
|
|
for (index = 0; index < mContentCount; index++) {
|
|
ContentAt(index) = aSource.ContentAt(index);
|
|
}
|
|
}
|
|
|
|
if (NS_SUCCEEDED(AllocateCounterIncrements(aSource.CounterIncrementCount()))) {
|
|
for (index = 0; index < mIncrementCount; index++) {
|
|
const nsStyleCounterData *data = aSource.GetCounterIncrementAt(index);
|
|
mIncrements[index].mCounter = data->mCounter;
|
|
mIncrements[index].mValue = data->mValue;
|
|
}
|
|
}
|
|
|
|
if (NS_SUCCEEDED(AllocateCounterResets(aSource.CounterResetCount()))) {
|
|
for (index = 0; index < mResetCount; index++) {
|
|
const nsStyleCounterData *data = aSource.GetCounterResetAt(index);
|
|
mResets[index].mCounter = data->mCounter;
|
|
mResets[index].mValue = data->mValue;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsChangeHint nsStyleContent::CalcDifference(const nsStyleContent& aOther) const
|
|
{
|
|
// In ReResolveStyleContext we assume that if there's no existing
|
|
// ::before or ::after and we don't have to restyle children of the
|
|
// node then we can't end up with a ::before or ::after due to the
|
|
// restyle of the node itself. That's not quite true, but the only
|
|
// exception to the above is when the 'content' property of the node
|
|
// changes and the pseudo-element inherits the changed value. Since
|
|
// the code here triggers a frame change on the node in that case,
|
|
// the optimization in ReResolveStyleContext is ok. But if we ever
|
|
// change this code to not reconstruct frames on changes to the
|
|
// 'content' property, then we will need to revisit the optimization
|
|
// in ReResolveStyleContext.
|
|
|
|
if (mContentCount != aOther.mContentCount ||
|
|
mIncrementCount != aOther.mIncrementCount ||
|
|
mResetCount != aOther.mResetCount) {
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
|
|
PRUint32 ix = mContentCount;
|
|
while (0 < ix--) {
|
|
if (mContents[ix] != aOther.mContents[ix]) {
|
|
// Unfortunately we need to reframe here; a simple reflow
|
|
// will not pick up different text or different image URLs,
|
|
// since we set all that up in the CSSFrameConstructor
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
}
|
|
ix = mIncrementCount;
|
|
while (0 < ix--) {
|
|
if ((mIncrements[ix].mValue != aOther.mIncrements[ix].mValue) ||
|
|
(mIncrements[ix].mCounter != aOther.mIncrements[ix].mCounter)) {
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
}
|
|
ix = mResetCount;
|
|
while (0 < ix--) {
|
|
if ((mResets[ix].mValue != aOther.mResets[ix].mValue) ||
|
|
(mResets[ix].mCounter != aOther.mResets[ix].mCounter)) {
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
}
|
|
if (mMarkerOffset != aOther.mMarkerOffset) {
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
return NS_STYLE_HINT_NONE;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleContent::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
#endif
|
|
|
|
nsresult nsStyleContent::AllocateContents(PRUint32 aCount)
|
|
{
|
|
// We need to run the destructors of the elements of mContents, so we
|
|
// delete and reallocate even if aCount == mContentCount. (If
|
|
// nsStyleContentData had its members private and managed their
|
|
// ownership on setting, we wouldn't need this, but that seems
|
|
// unnecessary at this point.)
|
|
DELETE_ARRAY_IF(mContents);
|
|
if (aCount) {
|
|
mContents = new nsStyleContentData[aCount];
|
|
if (! mContents) {
|
|
mContentCount = 0;
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
mContentCount = aCount;
|
|
return NS_OK;
|
|
}
|
|
|
|
// ---------------------
|
|
// nsStyleQuotes
|
|
//
|
|
|
|
nsStyleQuotes::nsStyleQuotes(void)
|
|
: mQuotesCount(0),
|
|
mQuotes(nsnull)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleQuotes);
|
|
SetInitial();
|
|
}
|
|
|
|
nsStyleQuotes::~nsStyleQuotes(void)
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleQuotes);
|
|
DELETE_ARRAY_IF(mQuotes);
|
|
}
|
|
|
|
nsStyleQuotes::nsStyleQuotes(const nsStyleQuotes& aSource)
|
|
: mQuotesCount(0),
|
|
mQuotes(nsnull)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleQuotes);
|
|
CopyFrom(aSource);
|
|
}
|
|
|
|
void
|
|
nsStyleQuotes::SetInitial()
|
|
{
|
|
// The initial value for quotes is the en-US typographic convention:
|
|
// outermost are LEFT and RIGHT DOUBLE QUOTATION MARK, alternating
|
|
// with LEFT and RIGHT SINGLE QUOTATION MARK.
|
|
static const PRUnichar initialQuotes[8] = {
|
|
0x201C, 0, 0x201D, 0, 0x2018, 0, 0x2019, 0
|
|
};
|
|
|
|
if (NS_SUCCEEDED(AllocateQuotes(2))) {
|
|
SetQuotesAt(0,
|
|
nsDependentString(&initialQuotes[0], 1),
|
|
nsDependentString(&initialQuotes[2], 1));
|
|
SetQuotesAt(1,
|
|
nsDependentString(&initialQuotes[4], 1),
|
|
nsDependentString(&initialQuotes[6], 1));
|
|
}
|
|
}
|
|
|
|
void
|
|
nsStyleQuotes::CopyFrom(const nsStyleQuotes& aSource)
|
|
{
|
|
if (NS_SUCCEEDED(AllocateQuotes(aSource.QuotesCount()))) {
|
|
PRUint32 count = (mQuotesCount * 2);
|
|
for (PRUint32 index = 0; index < count; index += 2) {
|
|
aSource.GetQuotesAt(index, mQuotes[index], mQuotes[index + 1]);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsChangeHint nsStyleQuotes::CalcDifference(const nsStyleQuotes& aOther) const
|
|
{
|
|
// If the quotes implementation is ever going to change we might not need
|
|
// a framechange here and a reflow should be sufficient. See bug 35768.
|
|
if (mQuotesCount == aOther.mQuotesCount) {
|
|
PRUint32 ix = (mQuotesCount * 2);
|
|
while (0 < ix--) {
|
|
if (mQuotes[ix] != aOther.mQuotes[ix]) {
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
}
|
|
|
|
return NS_STYLE_HINT_NONE;
|
|
}
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleQuotes::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
#endif
|
|
|
|
// --------------------
|
|
// nsStyleTextReset
|
|
//
|
|
|
|
nsStyleTextReset::nsStyleTextReset(void)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleTextReset);
|
|
mVerticalAlign.SetIntValue(NS_STYLE_VERTICAL_ALIGN_BASELINE, eStyleUnit_Enumerated);
|
|
mTextDecoration = NS_STYLE_TEXT_DECORATION_NONE;
|
|
mTextDecorationColor = NS_RGB(0,0,0);
|
|
mTextDecorationStyle =
|
|
NS_STYLE_TEXT_DECORATION_STYLE_SOLID | BORDER_COLOR_FOREGROUND;
|
|
mUnicodeBidi = NS_STYLE_UNICODE_BIDI_NORMAL;
|
|
}
|
|
|
|
nsStyleTextReset::nsStyleTextReset(const nsStyleTextReset& aSource)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleTextReset);
|
|
memcpy((nsStyleTextReset*)this, &aSource, sizeof(nsStyleTextReset));
|
|
}
|
|
|
|
nsStyleTextReset::~nsStyleTextReset(void)
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleTextReset);
|
|
}
|
|
|
|
nsChangeHint nsStyleTextReset::CalcDifference(const nsStyleTextReset& aOther) const
|
|
{
|
|
if (mVerticalAlign == aOther.mVerticalAlign
|
|
&& mUnicodeBidi == aOther.mUnicodeBidi) {
|
|
PRUint8 lineStyle = GetDecorationStyle();
|
|
PRUint8 otherLineStyle = aOther.GetDecorationStyle();
|
|
if (mTextDecoration != aOther.mTextDecoration ||
|
|
lineStyle != otherLineStyle) {
|
|
// Reflow for blink changes
|
|
if ((mTextDecoration & NS_STYLE_TEXT_DECORATION_BLINK) !=
|
|
(aOther.mTextDecoration & NS_STYLE_TEXT_DECORATION_BLINK)) {
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
// Reflow for decoration line style changes only to or from double or
|
|
// wave because that may cause overflow area changes
|
|
if (lineStyle == NS_STYLE_TEXT_DECORATION_STYLE_DOUBLE ||
|
|
lineStyle == NS_STYLE_TEXT_DECORATION_STYLE_WAVY ||
|
|
otherLineStyle == NS_STYLE_TEXT_DECORATION_STYLE_DOUBLE ||
|
|
otherLineStyle == NS_STYLE_TEXT_DECORATION_STYLE_WAVY) {
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
// Repaint for other style decoration lines because they must be in
|
|
// default overflow rect
|
|
return NS_STYLE_HINT_VISUAL;
|
|
}
|
|
|
|
// Repaint for decoration color changes
|
|
nscolor decColor, otherDecColor;
|
|
PRBool isFG, otherIsFG;
|
|
GetDecorationColor(decColor, isFG);
|
|
aOther.GetDecorationColor(otherDecColor, otherIsFG);
|
|
if (isFG != otherIsFG || (!isFG && decColor != otherDecColor)) {
|
|
return NS_STYLE_HINT_VISUAL;
|
|
}
|
|
|
|
return NS_STYLE_HINT_NONE;
|
|
}
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleTextReset::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
#endif
|
|
|
|
// Allowed to return one of NS_STYLE_HINT_NONE, NS_STYLE_HINT_REFLOW
|
|
// or NS_STYLE_HINT_VISUAL. Currently we just return NONE or REFLOW, though.
|
|
// XXXbz can this not return a more specific hint? If that's ever
|
|
// changed, nsStyleBorder::CalcDifference will need changing too.
|
|
static nsChangeHint
|
|
CalcShadowDifference(nsCSSShadowArray* lhs,
|
|
nsCSSShadowArray* rhs)
|
|
{
|
|
if (lhs == rhs)
|
|
return NS_STYLE_HINT_NONE;
|
|
|
|
if (!lhs || !rhs || lhs->Length() != rhs->Length())
|
|
return NS_STYLE_HINT_REFLOW;
|
|
|
|
for (PRUint32 i = 0; i < lhs->Length(); ++i) {
|
|
if (*lhs->ShadowAt(i) != *rhs->ShadowAt(i))
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
return NS_STYLE_HINT_NONE;
|
|
}
|
|
|
|
// --------------------
|
|
// nsStyleText
|
|
//
|
|
|
|
nsStyleText::nsStyleText(void)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleText);
|
|
mTextAlign = NS_STYLE_TEXT_ALIGN_DEFAULT;
|
|
mTextTransform = NS_STYLE_TEXT_TRANSFORM_NONE;
|
|
mWhiteSpace = NS_STYLE_WHITESPACE_NORMAL;
|
|
mWordWrap = NS_STYLE_WORDWRAP_NORMAL;
|
|
|
|
mLetterSpacing.SetNormalValue();
|
|
mLineHeight.SetNormalValue();
|
|
mTextIndent.SetCoordValue(0);
|
|
mWordSpacing = 0;
|
|
|
|
mTextShadow = nsnull;
|
|
mTabSize = NS_STYLE_TABSIZE_INITIAL;
|
|
}
|
|
|
|
nsStyleText::nsStyleText(const nsStyleText& aSource)
|
|
: mTextAlign(aSource.mTextAlign),
|
|
mTextTransform(aSource.mTextTransform),
|
|
mWhiteSpace(aSource.mWhiteSpace),
|
|
mWordWrap(aSource.mWordWrap),
|
|
mTabSize(aSource.mTabSize),
|
|
mLetterSpacing(aSource.mLetterSpacing),
|
|
mLineHeight(aSource.mLineHeight),
|
|
mTextIndent(aSource.mTextIndent),
|
|
mWordSpacing(aSource.mWordSpacing),
|
|
mTextShadow(aSource.mTextShadow)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleText);
|
|
}
|
|
|
|
nsStyleText::~nsStyleText(void)
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleText);
|
|
}
|
|
|
|
nsChangeHint nsStyleText::CalcDifference(const nsStyleText& aOther) const
|
|
{
|
|
if (NewlineIsSignificant() != aOther.NewlineIsSignificant()) {
|
|
// This may require construction of suppressed text frames
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
|
|
if ((mTextAlign != aOther.mTextAlign) ||
|
|
(mTextTransform != aOther.mTextTransform) ||
|
|
(mWhiteSpace != aOther.mWhiteSpace) ||
|
|
(mWordWrap != aOther.mWordWrap) ||
|
|
(mLetterSpacing != aOther.mLetterSpacing) ||
|
|
(mLineHeight != aOther.mLineHeight) ||
|
|
(mTextIndent != aOther.mTextIndent) ||
|
|
(mWordSpacing != aOther.mWordSpacing) ||
|
|
(mTabSize != aOther.mTabSize))
|
|
return NS_STYLE_HINT_REFLOW;
|
|
|
|
return CalcShadowDifference(mTextShadow, aOther.mTextShadow);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleText::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
#endif
|
|
|
|
//-----------------------
|
|
// nsStyleUserInterface
|
|
//
|
|
|
|
nsCursorImage::nsCursorImage()
|
|
: mHaveHotspot(PR_FALSE)
|
|
, mHotspotX(0.0f)
|
|
, mHotspotY(0.0f)
|
|
{
|
|
}
|
|
|
|
nsCursorImage::nsCursorImage(const nsCursorImage& aOther)
|
|
: mHaveHotspot(aOther.mHaveHotspot)
|
|
, mHotspotX(aOther.mHotspotX)
|
|
, mHotspotY(aOther.mHotspotY)
|
|
{
|
|
SetImage(aOther.GetImage());
|
|
}
|
|
|
|
nsCursorImage::~nsCursorImage()
|
|
{
|
|
SetImage(nsnull);
|
|
}
|
|
|
|
nsCursorImage&
|
|
nsCursorImage::operator=(const nsCursorImage& aOther)
|
|
{
|
|
if (this != &aOther) {
|
|
mHaveHotspot = aOther.mHaveHotspot;
|
|
mHotspotX = aOther.mHotspotX;
|
|
mHotspotY = aOther.mHotspotY;
|
|
SetImage(aOther.GetImage());
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
nsStyleUserInterface::nsStyleUserInterface(void)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleUserInterface);
|
|
mUserInput = NS_STYLE_USER_INPUT_AUTO;
|
|
mUserModify = NS_STYLE_USER_MODIFY_READ_ONLY;
|
|
mUserFocus = NS_STYLE_USER_FOCUS_NONE;
|
|
|
|
mCursor = NS_STYLE_CURSOR_AUTO; // fix for bugzilla bug 51113
|
|
|
|
mCursorArrayLength = 0;
|
|
mCursorArray = nsnull;
|
|
}
|
|
|
|
nsStyleUserInterface::nsStyleUserInterface(const nsStyleUserInterface& aSource) :
|
|
mUserInput(aSource.mUserInput),
|
|
mUserModify(aSource.mUserModify),
|
|
mUserFocus(aSource.mUserFocus),
|
|
mCursor(aSource.mCursor)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleUserInterface);
|
|
CopyCursorArrayFrom(aSource);
|
|
}
|
|
|
|
nsStyleUserInterface::~nsStyleUserInterface(void)
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleUserInterface);
|
|
delete [] mCursorArray;
|
|
}
|
|
|
|
nsChangeHint nsStyleUserInterface::CalcDifference(const nsStyleUserInterface& aOther) const
|
|
{
|
|
nsChangeHint hint = nsChangeHint(0);
|
|
if (mCursor != aOther.mCursor)
|
|
NS_UpdateHint(hint, nsChangeHint_UpdateCursor);
|
|
|
|
// We could do better. But it wouldn't be worth it, URL-specified cursors are
|
|
// rare.
|
|
if (mCursorArrayLength > 0 || aOther.mCursorArrayLength > 0)
|
|
NS_UpdateHint(hint, nsChangeHint_UpdateCursor);
|
|
|
|
if (mUserModify != aOther.mUserModify)
|
|
NS_UpdateHint(hint, NS_STYLE_HINT_VISUAL);
|
|
|
|
if ((mUserInput != aOther.mUserInput) &&
|
|
((NS_STYLE_USER_INPUT_NONE == mUserInput) ||
|
|
(NS_STYLE_USER_INPUT_NONE == aOther.mUserInput))) {
|
|
NS_UpdateHint(hint, NS_STYLE_HINT_FRAMECHANGE);
|
|
}
|
|
|
|
// ignore mUserFocus
|
|
|
|
return hint;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleUserInterface::MaxDifference()
|
|
{
|
|
return nsChangeHint(nsChangeHint_UpdateCursor | NS_STYLE_HINT_FRAMECHANGE);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
nsStyleUserInterface::CopyCursorArrayFrom(const nsStyleUserInterface& aSource)
|
|
{
|
|
mCursorArray = nsnull;
|
|
mCursorArrayLength = 0;
|
|
if (aSource.mCursorArrayLength) {
|
|
mCursorArray = new nsCursorImage[aSource.mCursorArrayLength];
|
|
if (mCursorArray) {
|
|
mCursorArrayLength = aSource.mCursorArrayLength;
|
|
for (PRUint32 i = 0; i < mCursorArrayLength; ++i)
|
|
mCursorArray[i] = aSource.mCursorArray[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
//-----------------------
|
|
// nsStyleUIReset
|
|
//
|
|
|
|
nsStyleUIReset::nsStyleUIReset(void)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleUIReset);
|
|
mUserSelect = NS_STYLE_USER_SELECT_AUTO;
|
|
mForceBrokenImageIcon = 0;
|
|
mIMEMode = NS_STYLE_IME_MODE_AUTO;
|
|
mWindowShadow = NS_STYLE_WINDOW_SHADOW_DEFAULT;
|
|
}
|
|
|
|
nsStyleUIReset::nsStyleUIReset(const nsStyleUIReset& aSource)
|
|
{
|
|
MOZ_COUNT_CTOR(nsStyleUIReset);
|
|
mUserSelect = aSource.mUserSelect;
|
|
mForceBrokenImageIcon = aSource.mForceBrokenImageIcon;
|
|
mIMEMode = aSource.mIMEMode;
|
|
mWindowShadow = aSource.mWindowShadow;
|
|
}
|
|
|
|
nsStyleUIReset::~nsStyleUIReset(void)
|
|
{
|
|
MOZ_COUNT_DTOR(nsStyleUIReset);
|
|
}
|
|
|
|
nsChangeHint nsStyleUIReset::CalcDifference(const nsStyleUIReset& aOther) const
|
|
{
|
|
// ignore mIMEMode
|
|
if (mForceBrokenImageIcon != aOther.mForceBrokenImageIcon)
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
if (mWindowShadow != aOther.mWindowShadow) {
|
|
// We really need just an nsChangeHint_SyncFrameView, except
|
|
// on an ancestor of the frame, so we get that by doing a
|
|
// reflow.
|
|
return NS_STYLE_HINT_REFLOW;
|
|
}
|
|
if (mUserSelect != aOther.mUserSelect)
|
|
return NS_STYLE_HINT_VISUAL;
|
|
return NS_STYLE_HINT_NONE;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
/* static */
|
|
nsChangeHint nsStyleUIReset::MaxDifference()
|
|
{
|
|
return NS_STYLE_HINT_FRAMECHANGE;
|
|
}
|
|
#endif
|
|
|