зеркало из https://github.com/mozilla/gecko-dev.git
643 строки
23 KiB
C++
643 строки
23 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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// YY need to pass isMultiple before create called
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//#include "nsFormControlFrame.h"
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#include "nsHTMLContainerFrame.h"
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#include "nsLegendFrame.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMHTMLFieldSetElement.h"
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#include "nsIDOMHTMLLegendElement.h"
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#include "nsCSSRendering.h"
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//#include "nsIDOMHTMLCollection.h"
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#include "nsIContent.h"
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#include "nsIFrame.h"
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#include "nsISupports.h"
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#include "nsIAtom.h"
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#include "nsIPresContext.h"
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#include "nsIHTMLContent.h"
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#include "nsHTMLIIDs.h"
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#include "nsHTMLParts.h"
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#include "nsHTMLAtoms.h"
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsStyleUtil.h"
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#include "nsFont.h"
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#include "nsCOMPtr.h"
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static NS_DEFINE_IID(kLegendFrameCID, NS_LEGEND_FRAME_CID);
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static NS_DEFINE_IID(kIDOMHTMLFieldSetElementIID, NS_IDOMHTMLFIELDSETELEMENT_IID);
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static NS_DEFINE_IID(kIDOMHTMLLegendElementIID, NS_IDOMHTMLLEGENDELEMENT_IID);
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class nsLegendFrame;
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class nsFieldSetFrame : public nsHTMLContainerFrame {
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public:
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nsFieldSetFrame();
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NS_IMETHOD SetInitialChildList(nsIPresContext* aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_METHOD Paint(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer);
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NS_IMETHOD AppendFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame);
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NS_IMETHOD ReplaceFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame,
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nsIFrame* aNewFrame);
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsString& aResult) const {
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return MakeFrameName("FieldSet", aResult);
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}
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#endif
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protected:
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virtual PRIntn GetSkipSides() const;
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nsIFrame* mLegendFrame;
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nsIFrame* mContentFrame;
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nsRect mLegendRect;
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nscoord mLegendSpace;
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};
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nsresult
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NS_NewFieldSetFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame, PRUint32 aStateFlags )
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{
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NS_PRECONDITION(aNewFrame, "null OUT ptr");
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if (nsnull == aNewFrame) {
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return NS_ERROR_NULL_POINTER;
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}
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nsFieldSetFrame* it = new (aPresShell) nsFieldSetFrame;
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if (!it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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// set the state flags (if any are provided)
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nsFrameState state;
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it->GetFrameState( &state );
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state |= aStateFlags;
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it->SetFrameState( state );
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*aNewFrame = it;
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return NS_OK;
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}
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nsFieldSetFrame::nsFieldSetFrame()
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: nsHTMLContainerFrame()
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{
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mContentFrame = nsnull;
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mLegendFrame = nsnull;
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mLegendSpace = 0;
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}
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NS_IMETHODIMP
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nsFieldSetFrame::SetInitialChildList(nsIPresContext* aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList)
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{
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// get the content and legend frames.
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mContentFrame = aChildList;
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mContentFrame->GetNextSibling(&mLegendFrame);
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// Queue up the frames for the content frame
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return nsHTMLContainerFrame::SetInitialChildList(aPresContext, nsnull, aChildList);
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}
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// this is identical to nsHTMLContainerFrame::Paint except for the background and border.
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NS_IMETHODIMP
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nsFieldSetFrame::Paint(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer)
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{
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if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
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// Paint our background and border
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const nsStyleDisplay* disp =
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(const nsStyleDisplay*)mStyleContext->GetStyleData(eStyleStruct_Display);
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if (disp->IsVisible() && mRect.width && mRect.height) {
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PRIntn skipSides = GetSkipSides();
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const nsStyleColor* color =
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(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
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const nsStyleSpacing* spacing =
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(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
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nsMargin border;
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if (!spacing->GetBorder(border)) {
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NS_NOTYETIMPLEMENTED("percentage border");
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}
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nscoord yoff = 0;
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// if the border is smaller than the legend. Move the border down
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// to be centered on the legend.
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if (border.top < mLegendRect.height)
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yoff = (mLegendRect.height - border.top)/2;
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nsRect rect(0, yoff, mRect.width, mRect.height - yoff);
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nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *color, *spacing, 0, 0);
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if (mLegendFrame) {
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// we should probably use PaintBorderEdges to do this but for now just use clipping
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// to achieve the same effect.
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PRBool clipState;
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// draw left side
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nsRect clipRect(rect);
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clipRect.width = mLegendRect.x - rect.x;
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clipRect.height = border.top;
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aRenderingContext.PushState();
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aRenderingContext.SetClipRect(clipRect, nsClipCombine_kIntersect, clipState);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *spacing, mStyleContext, skipSides);
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aRenderingContext.PopState(clipState);
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// draw right side
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clipRect = rect;
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clipRect.x = mLegendRect.x + mLegendRect.width;
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clipRect.width -= (mLegendRect.x + mLegendRect.width);
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clipRect.height = border.top;
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aRenderingContext.PushState();
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aRenderingContext.SetClipRect(clipRect, nsClipCombine_kIntersect, clipState);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *spacing, mStyleContext, skipSides);
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aRenderingContext.PopState(clipState);
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// draw bottom
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clipRect = rect;
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clipRect.y += border.top;
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clipRect.height = mRect.height - (yoff + border.top);
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aRenderingContext.PushState();
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aRenderingContext.SetClipRect(clipRect, nsClipCombine_kIntersect, clipState);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *spacing, mStyleContext, skipSides);
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aRenderingContext.PopState(clipState);
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} else {
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
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aDirtyRect, nsRect(0,0,mRect.width, mRect.height), *spacing, mStyleContext, skipSides);
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}
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}
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}
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PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
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#ifdef DEBUG
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if ((NS_FRAME_PAINT_LAYER_DEBUG == aWhichLayer) && GetShowFrameBorders()) {
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nsIView* view;
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GetView(aPresContext, &view);
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if (nsnull != view) {
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aRenderingContext.SetColor(NS_RGB(0,0,255));
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}
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else {
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aRenderingContext.SetColor(NS_RGB(255,0,0));
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}
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aRenderingContext.DrawRect(0, 0, mRect.width, mRect.height);
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}
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#endif
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFieldSetFrame::Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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DO_GLOBAL_REFLOW_COUNT("nsFieldSetFrame", aReflowState.reason);
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// Initialize OUT parameter
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aStatus = NS_FRAME_COMPLETE;
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//------------ Handle Incremental Reflow -----------------
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nsIFrame* incrementalChild = nsnull;
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PRBool reflowContent = PR_TRUE;
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PRBool reflowLegend = PR_TRUE;
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nsReflowReason reason = aReflowState.reason;
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if ( aReflowState.reason == eReflowReason_Incremental ) {
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nsIReflowCommand::ReflowType reflowType;
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aReflowState.reflowCommand->GetType(reflowType);
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// See if it's targeted at us
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nsIFrame* targetFrame;
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aReflowState.reflowCommand->GetTarget(targetFrame);
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if (this == targetFrame) {
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switch (reflowType) {
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case nsIReflowCommand::StyleChanged:
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{
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nsHTMLReflowState newState(aReflowState);
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newState.reason = eReflowReason_StyleChange;
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return Reflow(aPresContext, aDesiredSize, newState, aStatus);
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}
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break;
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// if its a dirty type then reflow us with a dirty reflow
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case nsIReflowCommand::ReflowDirty:
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{
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nsHTMLReflowState newState(aReflowState);
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newState.reason = eReflowReason_Dirty;
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return Reflow(aPresContext, aDesiredSize, newState, aStatus);
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}
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break;
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default:
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NS_ERROR("Unexpected Reflow Type");
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}
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} else {
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aReflowState.reflowCommand->GetNext(incrementalChild);
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reflowContent = PR_FALSE;
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reflowLegend = PR_FALSE;
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if (incrementalChild == mLegendFrame)
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reflowLegend = PR_TRUE;
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else if (incrementalChild == mContentFrame)
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reflowContent = PR_TRUE;
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}
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}
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// if dirty then check dirty flags
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if (reason == eReflowReason_Dirty)
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{
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if (reflowContent) {
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nsFrameState state;
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mContentFrame->GetFrameState(&state);
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reflowContent = (state & NS_FRAME_IS_DIRTY) || (state & NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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if (reflowLegend) {
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nsFrameState state;
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mLegendFrame->GetFrameState(&state);
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reflowLegend = (state & NS_FRAME_IS_DIRTY) || (state & NS_FRAME_HAS_DIRTY_CHILDREN);
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}
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}
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// availSize could have unconstrained values, don't perform any addition on them
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nsSize availSize(aReflowState.mComputedWidth, aReflowState.availableHeight);
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// get our border and padding
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const nsMargin &borderPadding = aReflowState.mComputedBorderPadding;
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const nsMargin &padding = aReflowState.mComputedPadding;
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nsMargin border = borderPadding - padding;
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// Figure out how big the legend is if there is one.
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// get the legend's margin
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nsMargin legendMargin(0,0,0,0);
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// reflow the legend only if needed
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if (mLegendFrame) {
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const nsStyleSpacing* legendSpacing;
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mLegendFrame->GetStyleData(eStyleStruct_Spacing,
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(const nsStyleStruct*&) legendSpacing);
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legendSpacing->GetMargin(legendMargin);
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if (reflowLegend) {
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nsHTMLReflowState legendReflowState(aPresContext, aReflowState,
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mLegendFrame, nsSize(NS_INTRINSICSIZE,NS_INTRINSICSIZE));
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// always give the legend as much size as it needs
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legendReflowState.mComputedWidth = NS_INTRINSICSIZE;
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legendReflowState.mComputedHeight = NS_INTRINSICSIZE;
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legendReflowState.reason = reason;
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nsHTMLReflowMetrics legendDesiredSize(0,0);
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ReflowChild(mLegendFrame, aPresContext, legendDesiredSize, legendReflowState,
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0, 0, NS_FRAME_NO_MOVE_FRAME, aStatus);
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#ifdef NOISY_REFLOW
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printf(" returned (%d, %d)\n", legendDesiredSize.width, legendDesiredSize.height);
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if (legendDesiredSize.maxElementSize)
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printf(" and maxES (%d, %d)\n",
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legendDesiredSize.maxElementSize->width, legendDesiredSize.maxElementSize->height);
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#endif
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// figure out the legend's rectangle
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mLegendRect.width = legendDesiredSize.width + legendMargin.left + legendMargin.right;
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mLegendRect.height = legendDesiredSize.height + legendMargin.top + legendMargin.bottom;
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mLegendRect.x = borderPadding.left;
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mLegendRect.y = 0;
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nscoord oldSpace = mLegendSpace;
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mLegendSpace = 0;
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if (mLegendRect.height > border.top) {
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// center the border on the legend
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mLegendSpace = mLegendRect.height - borderPadding.top;
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} else {
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mLegendRect.y = (border.top - mLegendRect.height)/2;
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}
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// if the legend space changes then we need to reflow the
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// content area as well.
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if (mLegendSpace != oldSpace) {
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if (reflowContent == PR_FALSE || reason == eReflowReason_Dirty) {
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reflowContent = PR_TRUE;
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reason = eReflowReason_Resize;
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}
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}
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// if we are contrained then remove the legend from our available height.
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if (NS_INTRINSICSIZE != availSize.height) {
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if (availSize.height >= mLegendSpace)
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availSize.height -= mLegendSpace;
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}
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// don't get any smaller than the legend
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if (NS_INTRINSICSIZE != availSize.width) {
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if (availSize.width < mLegendRect.width)
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availSize.width = mLegendRect.width;
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}
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FinishReflowChild(mLegendFrame, aPresContext, legendDesiredSize, 0, 0, NS_FRAME_NO_MOVE_FRAME);
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}
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}
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nsRect contentRect;
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// reflow the content frame only if needed
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if (mContentFrame) {
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if (reflowContent) {
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availSize.width = aReflowState.mComputedWidth;
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#if 0
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if (aReflowState.mComputedHeight != NS_INTRINSICSIZE) {
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availSize.height = aReflowState.mComputedHeight - mLegendSpace;
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} else {
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availSize.height = NS_INTRINSICSIZE;
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}
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#endif
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nsHTMLReflowState kidReflowState(aPresContext, aReflowState, mContentFrame,
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availSize);
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kidReflowState.reason = reason;
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nsHTMLReflowMetrics kidDesiredSize(0,0);
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// Reflow the frame
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ReflowChild(mContentFrame, aPresContext, kidDesiredSize, kidReflowState,
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kidReflowState.mComputedMargin.left, kidReflowState.mComputedMargin.top,
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0, aStatus);
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#ifdef NOISY_REFLOW
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printf(" returned (%d, %d)\n", kidDesiredSize.width, kidDesiredSize.height);
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if (kidDesiredSize.maxElementSize)
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printf(" and maxES (%d, %d)\n",
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kidDesiredSize.maxElementSize->width, kidDesiredSize.maxElementSize->height);
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#endif
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/*
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printf("*** %p computedHgt: %d ", this, aReflowState.mComputedHeight);
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printf("Reason: ");
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switch (aReflowState.reason) {
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case eReflowReason_Initial:printf("Initil");break;
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case eReflowReason_Incremental:printf("Increm");break;
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case eReflowReason_Resize: printf("Resize"); break;
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case eReflowReason_StyleChange:printf("eReflowReason_StyleChange");break;
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}
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*/
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// set the rect. make sure we add the margin back in.
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contentRect.SetRect(borderPadding.left,borderPadding.top + mLegendSpace,kidDesiredSize.width ,kidDesiredSize.height);
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if (aReflowState.mComputedHeight != NS_INTRINSICSIZE &&
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borderPadding.top + mLegendSpace+kidDesiredSize.height > aReflowState.mComputedHeight) {
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kidDesiredSize.height = aReflowState.mComputedHeight-(borderPadding.top + mLegendSpace);
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}
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FinishReflowChild(mContentFrame, aPresContext, kidDesiredSize, contentRect.x, contentRect.y, 0);
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nsFrameState kidState;
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mContentFrame->GetFrameState(&kidState);
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// printf("width: %d, height: %d\n", desiredSize.mCombinedArea.width, desiredSize.mCombinedArea.height);
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/*
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if (kidState & NS_FRAME_OUTSIDE_CHILDREN) {
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mState |= NS_FRAME_OUTSIDE_CHILDREN;
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aDesiredSize.mOverflowArea.width += borderPadding.left + borderPadding.right;
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aDesiredSize.mOverflowArea.height += borderPadding.top + borderPadding.bottom + mLegendSpace;
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}
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*/
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NS_FRAME_TRACE_REFLOW_OUT("FieldSet::Reflow", aStatus);
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} else {
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// if we don't need to reflow just get the old size
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mContentFrame->GetRect(contentRect);
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const nsStyleSpacing* spacing;
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mContentFrame->GetStyleData(eStyleStruct_Spacing,
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(const nsStyleStruct*&) spacing);
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|
|
nsMargin m(0,0,0,0);
|
|
spacing->GetMargin(m);
|
|
contentRect.Inflate(m);
|
|
}
|
|
}
|
|
|
|
if (mLegendFrame) {
|
|
if (contentRect.width > mLegendRect.width) {
|
|
PRInt32 align = ((nsLegendFrame*)mLegendFrame)->GetAlign();
|
|
|
|
switch(align) {
|
|
case NS_STYLE_TEXT_ALIGN_RIGHT:
|
|
mLegendRect.x = contentRect.width - mLegendRect.width + borderPadding.left;
|
|
break;
|
|
case NS_STYLE_TEXT_ALIGN_CENTER:
|
|
mLegendRect.x = contentRect.width/2 - mLegendRect.width/2 + borderPadding.left;
|
|
}
|
|
|
|
} else {
|
|
contentRect.width = mLegendRect.width + borderPadding.left + borderPadding.right;
|
|
aDesiredSize.width = contentRect.width;
|
|
}
|
|
// place the legend
|
|
nsRect actualLegendRect(mLegendRect);
|
|
actualLegendRect.Deflate(legendMargin);
|
|
|
|
nsPoint curOrigin;
|
|
mLegendFrame->GetOrigin(curOrigin);
|
|
|
|
// only if the origin changed
|
|
if ((curOrigin.x != mLegendRect.x) || (curOrigin.y != mLegendRect.y)) {
|
|
|
|
mLegendFrame->MoveTo(aPresContext, actualLegendRect.x , actualLegendRect.y);
|
|
|
|
nsIView* view;
|
|
mLegendFrame->GetView(aPresContext, &view);
|
|
if (view)
|
|
nsContainerFrame::PositionFrameView(aPresContext, mLegendFrame, view);
|
|
else
|
|
nsContainerFrame::PositionChildViews(aPresContext, mLegendFrame);
|
|
}
|
|
}
|
|
|
|
// Return our size and our result
|
|
if (aReflowState.mComputedHeight == NS_INTRINSICSIZE) {
|
|
aDesiredSize.height = mLegendSpace +
|
|
borderPadding.top +
|
|
contentRect.height +
|
|
borderPadding.bottom;
|
|
} else {
|
|
nscoord min = borderPadding.top + borderPadding.bottom + mLegendRect.height;
|
|
aDesiredSize.height = aReflowState.mComputedHeight + borderPadding.top + borderPadding.bottom;
|
|
if (aDesiredSize.height < min)
|
|
aDesiredSize.height = min;
|
|
}
|
|
|
|
if (aReflowState.mComputedWidth == NS_INTRINSICSIZE) {
|
|
aDesiredSize.width = borderPadding.left +
|
|
contentRect.width +
|
|
borderPadding.right;
|
|
} else {
|
|
nscoord min = borderPadding.left + borderPadding.right + mLegendRect.width;
|
|
aDesiredSize.width = aReflowState.mComputedWidth + borderPadding.left + borderPadding.right;
|
|
if (aDesiredSize.width < min)
|
|
aDesiredSize.width = min;
|
|
}
|
|
|
|
aDesiredSize.ascent = aDesiredSize.height;
|
|
aDesiredSize.descent = 0;
|
|
aDesiredSize.mMaximumWidth = aDesiredSize.width;
|
|
if (nsnull != aDesiredSize.maxElementSize) {
|
|
// if the legend is wider use it
|
|
if (aDesiredSize.maxElementSize->width < mLegendRect.width)
|
|
aDesiredSize.maxElementSize->width = mLegendRect.width;
|
|
|
|
// add in padding.
|
|
aDesiredSize.maxElementSize->width += borderPadding.left + borderPadding.right;
|
|
|
|
// height is border + legend
|
|
aDesiredSize.maxElementSize->height += borderPadding.top + borderPadding.bottom + mLegendRect.height;
|
|
}
|
|
#ifdef NOISY_REFLOW
|
|
printf("FIELDSET: w=%d, maxWidth=%d, MES=%d\n",
|
|
aDesiredSize.width, aDesiredSize.mMaximumWidth,
|
|
aDesiredSize.maxElementSize ? aDesiredSize.maxElementSize->width : -1);
|
|
if (aDesiredSize.mFlags & NS_REFLOW_CALC_MAX_WIDTH)
|
|
printf(" and preferred size = %d\n", aDesiredSize.mMaximumWidth);
|
|
|
|
#endif
|
|
return NS_OK;
|
|
}
|
|
|
|
PRIntn
|
|
nsFieldSetFrame::GetSkipSides() const
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFieldSetFrame::AppendFrames(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aFrameList)
|
|
{
|
|
return mContentFrame->AppendFrames(aPresContext,
|
|
aPresShell,
|
|
aListName,
|
|
aFrameList);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFieldSetFrame::InsertFrames(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aPrevFrame,
|
|
nsIFrame* aFrameList)
|
|
{
|
|
return mContentFrame->InsertFrames(aPresContext,
|
|
aPresShell,
|
|
aListName,
|
|
aPrevFrame,
|
|
aFrameList);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsFieldSetFrame::RemoveFrame(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aOldFrame)
|
|
{
|
|
return mContentFrame->RemoveFrame (aPresContext,
|
|
aPresShell,
|
|
aListName,
|
|
aOldFrame);
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsFieldSetFrame::ReplaceFrame(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aOldFrame,
|
|
nsIFrame* aNewFrame)
|
|
{
|
|
return mContentFrame->ReplaceFrame (aPresContext,
|
|
aPresShell,
|
|
aListName,
|
|
aOldFrame,
|
|
aNewFrame);
|
|
}
|
|
|
|
|