зеркало из https://github.com/mozilla/pjs.git
1007 строки
36 KiB
C++
1007 строки
36 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nsTableRowFrame.h"
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#include "nsIRenderingContext.h"
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#include "nsIPresContext.h"
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsIHTMLAttributes.h"
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#include "nsHTMLAtoms.h"
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#include "nsIContent.h"
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#include "nsIContentDelegate.h"
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#include "nsHTMLTagContent.h"
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#include "nsTableFrame.h"
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#include "nsTableCellFrame.h"
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#include "nsIView.h"
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#include "nsIPtr.h"
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#include "nsIReflowCommand.h"
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#include "nsCSSRendering.h"
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// the following header files are required for style optimizations that work only when the child content is really a cell
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#include "nsITableContent.h"
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#include "nsTableCell.h"
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static NS_DEFINE_IID(kITableContentIID, NS_ITABLECONTENT_IID);
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// end includes for style optimizations that require real content knowledge
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NS_DEF_PTR(nsIStyleContext);
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#ifdef NS_DEBUG
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static PRBool gsDebug = PR_FALSE;
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//#define NOISY
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//#define NOISY_FLOW
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#else
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static const PRBool gsDebug = PR_FALSE;
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#endif
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/* ----------- RowReflowState ---------- */
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struct RowReflowState {
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// Our reflow state
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const nsReflowState& reflowState;
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// The body's available size (computed from the body's parent)
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nsSize availSize;
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// the running x-offset
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nscoord x;
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// Height of tallest cell (excluding cells with rowspan > 1)
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nscoord maxCellHeight; // just the height of the cell frame
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nscoord maxCellVertSpace; // the maximum MAX(cellheight + topMargin + bottomMargin)
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nsTableFrame *tableFrame;
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RowReflowState(const nsReflowState& aReflowState,
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nsTableFrame* aTableFrame)
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: reflowState(aReflowState)
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{
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availSize.width = reflowState.maxSize.width;
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availSize.height = reflowState.maxSize.height;
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maxCellHeight = 0;
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maxCellVertSpace = 0;
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tableFrame = aTableFrame;
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x=0;
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}
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};
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/* ----------- nsTableRowpFrame ---------- */
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nsTableRowFrame::nsTableRowFrame(nsIContent* aContent,
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nsIFrame* aParentFrame)
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: nsContainerFrame(aContent, aParentFrame),
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mTallestCell(0),
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mCellMaxTopMargin(0),
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mCellMaxBottomMargin(0),
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mMinRowSpan(1)
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{
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}
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nsTableRowFrame::~nsTableRowFrame()
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{
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}
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/**
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* Post-reflow hook. This is where the table row does its post-processing
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*/
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NS_METHOD
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nsTableRowFrame::DidReflow(nsIPresContext& aPresContext,
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nsDidReflowStatus aStatus)
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{
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if (NS_FRAME_REFLOW_FINISHED == aStatus) {
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// Resize and re-align the cell frames based on our row height
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nscoord cellHeight = mRect.height - mCellMaxTopMargin - mCellMaxBottomMargin;
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nsTableCellFrame *cellFrame = (nsTableCellFrame*)mFirstChild;
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nsTableFrame* tableFrame;
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mContentParent->GetContentParent((nsIFrame*&)tableFrame);
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while (nsnull != cellFrame)
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{
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PRInt32 rowSpan = tableFrame->GetEffectiveRowSpan(mRowIndex, cellFrame);
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if (1==rowSpan)
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{
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// resize the cell's height
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nsSize cellFrameSize;
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cellFrame->GetSize(cellFrameSize);
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cellFrame->SizeTo(cellFrameSize.width, cellHeight);
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// realign cell content based on the new height
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cellFrame->VerticallyAlignChild(&aPresContext);
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}
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// Get the next cell
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cellFrame->GetNextSibling((nsIFrame*&)cellFrame);
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}
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}
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// Let our base class do the usual work
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return nsContainerFrame::DidReflow(aPresContext, aStatus);
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}
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void nsTableRowFrame::ResetMaxChildHeight()
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{
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mTallestCell=0;
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mCellMaxTopMargin=0;
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mCellMaxBottomMargin=0;
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}
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void nsTableRowFrame::SetMaxChildHeight(nscoord aChildHeight, nscoord aTopMargin, nscoord aBottomMargin)
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{
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if (mTallestCell<aChildHeight)
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mTallestCell = aChildHeight;
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if (mCellMaxTopMargin<aTopMargin)
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mCellMaxTopMargin = aTopMargin;
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if (mCellMaxBottomMargin<aBottomMargin)
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mCellMaxBottomMargin = aBottomMargin;
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}
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NS_METHOD nsTableRowFrame::Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect)
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{
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/*
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const nsStyleColor* myColor =
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(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
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if (nsnull != myColor) {
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nsRect rect(0, 0, mRect.width, mRect.height);
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nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *myColor);
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}
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*/
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PaintChildren(aPresContext, aRenderingContext, aDirtyRect);
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return NS_OK;
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}
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/** overloaded method from nsContainerFrame. The difference is that
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* we don't want to clip our children, so a cell can do a rowspan
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*/
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void nsTableRowFrame::PaintChildren(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect)
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{
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nsIFrame* kid = mFirstChild;
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while (nsnull != kid) {
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nsIView *pView;
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kid->GetView(pView);
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if (nsnull == pView) {
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nsRect kidRect;
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kid->GetRect(kidRect);
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nsRect damageArea;
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PRBool overlap = damageArea.IntersectRect(aDirtyRect, kidRect);
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if (overlap) {
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// Translate damage area into kid's coordinate system
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nsRect kidDamageArea(damageArea.x - kidRect.x,
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damageArea.y - kidRect.y,
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damageArea.width, damageArea.height);
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aRenderingContext.PushState();
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aRenderingContext.Translate(kidRect.x, kidRect.y);
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kid->Paint(aPresContext, aRenderingContext, kidDamageArea);
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if (nsIFrame::GetShowFrameBorders()) {
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aRenderingContext.SetColor(NS_RGB(255,0,0));
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aRenderingContext.DrawRect(0, 0, kidRect.width, kidRect.height);
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}
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aRenderingContext.PopState();
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}
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}
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kid->GetNextSibling(kid);
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}
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}
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void nsTableRowFrame::SetRowIndex (int aRowIndex)
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{
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mRowIndex = aRowIndex;
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}
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/** returns the height of the tallest child in this row (ignoring any cell with rowspans) */
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nscoord nsTableRowFrame::GetTallestChild() const
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{
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return mTallestCell;
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}
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nscoord nsTableRowFrame::GetChildMaxTopMargin() const
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{
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return mCellMaxTopMargin;
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}
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nscoord nsTableRowFrame::GetChildMaxBottomMargin() const
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{
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return mCellMaxBottomMargin;
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}
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PRInt32 nsTableRowFrame::GetMaxColumns() const
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{
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int sum = 0;
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nsTableCellFrame *cell=(nsTableCellFrame *)mFirstChild;
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while (nsnull!=cell) {
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sum += cell->GetColSpan();
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cell->GetNextSibling((nsIFrame *&)cell);
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}
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return sum;
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}
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/* GetMinRowSpan is needed for deviant cases where every cell in a row has a rowspan > 1.
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* It sets mMinRowSpan, which is used in FixMinCellHeight and PlaceChild
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*/
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void nsTableRowFrame::GetMinRowSpan(nsTableFrame *aTableFrame)
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{
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PRInt32 minRowSpan=-1;
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nsIFrame *frame=mFirstChild;
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while (nsnull!=frame)
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{
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PRInt32 rowSpan = aTableFrame->GetEffectiveRowSpan(mRowIndex, ((nsTableCellFrame *)frame));
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if (-1==minRowSpan)
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minRowSpan = rowSpan;
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else if (minRowSpan>rowSpan)
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minRowSpan = rowSpan;
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frame->GetNextSibling(frame);
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}
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mMinRowSpan = minRowSpan;
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}
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void nsTableRowFrame::FixMinCellHeight(nsTableFrame *aTableFrame)
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{
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nsIFrame *frame=mFirstChild;
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while (nsnull!=frame)
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{
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PRInt32 rowSpan = aTableFrame->GetEffectiveRowSpan(mRowIndex, ((nsTableCellFrame *)frame));
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if (mMinRowSpan==rowSpan)
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{
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nsRect rect;
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frame->GetRect(rect);
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if (rect.height > mTallestCell)
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mTallestCell = rect.height;
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}
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frame->GetNextSibling(frame);
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}
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}
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// Position and size aKidFrame and update our reflow state. The origin of
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// aKidRect is relative to the upper-left origin of our frame, and includes
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// any left/top margin.
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void nsTableRowFrame::PlaceChild(nsIPresContext& aPresContext,
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RowReflowState& aState,
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nsIFrame* aKidFrame,
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const nsRect& aKidRect,
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nsSize* aMaxElementSize,
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nsSize* aKidMaxElementSize)
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{
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if (PR_TRUE==gsDebug)
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printf ("row: placing cell at %d, %d, %d, %d\n",
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aKidRect.x, aKidRect.y, aKidRect.width, aKidRect.height);
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// Place and size the child
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aKidFrame->SetRect(aKidRect);
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// update the running total for the row width
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aState.x += aKidRect.width;
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// Update the maximum element size
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PRInt32 rowSpan = aState.tableFrame->GetEffectiveRowSpan(mRowIndex,
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((nsTableCellFrame*)aKidFrame));
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if (nsnull != aMaxElementSize)
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{
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aMaxElementSize->width += aKidMaxElementSize->width;
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if ((mMinRowSpan==rowSpan) && (aKidMaxElementSize->height>aMaxElementSize->height))
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{
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aMaxElementSize->height = aKidMaxElementSize->height;
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}
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}
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if (mMinRowSpan == rowSpan)
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{
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// Update maxCellHeight
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if (aKidRect.height > aState.maxCellHeight)
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aState.maxCellHeight = aKidRect.height;
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// Update maxCellVertSpace
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nsMargin margin;
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if (aState.tableFrame->GetCellMarginData((nsTableCellFrame *)aKidFrame, margin) == NS_OK)
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{
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nscoord height = aKidRect.height + margin.top + margin.bottom;
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if (height > aState.maxCellVertSpace)
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aState.maxCellVertSpace = height;
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}
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}
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}
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/**
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* Called for a resize reflow. Typically because the column widths have
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* changed. Reflows all the existing table cell frames
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*/
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nsresult nsTableRowFrame::ResizeReflow(nsIPresContext& aPresContext,
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RowReflowState& aState,
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nsReflowMetrics& aDesiredSize)
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{
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if (nsnull == mFirstChild)
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return NS_OK;
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nsSize kidMaxElementSize;
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PRInt32 prevColIndex = -1; // remember the col index of the previous cell to handle rowspans into this row
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nsSize* pKidMaxElementSize = (nsnull != aDesiredSize.maxElementSize) ?
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&kidMaxElementSize : nsnull;
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nscoord maxCellTopMargin = 0;
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nscoord maxCellBottomMargin = 0;
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nscoord cellSpacing = aState.tableFrame->GetCellSpacing();
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if (PR_TRUE==gsDebug) printf("%p: RR\n", this);
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// Reflow each of our existing cell frames
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for (nsIFrame* kidFrame = mFirstChild; nsnull != kidFrame; )
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{
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nsMargin kidMargin;
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aState.tableFrame->GetCellMarginData((nsTableCellFrame *)kidFrame,kidMargin);
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if (kidMargin.top > maxCellTopMargin)
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maxCellTopMargin = kidMargin.top;
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if (kidMargin.bottom > maxCellBottomMargin)
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maxCellBottomMargin = kidMargin.bottom;
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// Compute the x-origin for the child, taking into account straddlers (cells from prior
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// rows with rowspans > 1)
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PRInt32 cellColIndex = ((nsTableCellFrame *)kidFrame)->GetColIndex();
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if (prevColIndex != (cellColIndex-1))
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{ // if this cell is not immediately adjacent to the previous cell, factor in missing col info
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for (PRInt32 colIndex=prevColIndex+1; colIndex<cellColIndex; colIndex++)
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{
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aState.x += aState.tableFrame->GetColumnWidth(colIndex);
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aState.x += cellSpacing;
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if (PR_TRUE==gsDebug)
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printf(" in loop, aState.x set to %d from cellSpacing %d and col width\n",
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aState.x, aState.tableFrame->GetColumnWidth(colIndex), cellSpacing);
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}
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}
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aState.x += cellSpacing;
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if (PR_TRUE==gsDebug) printf(" past loop, aState.x set to %d\n", aState.x);
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// at this point, we know the column widths.
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// so we get the avail width from the known column widths
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PRInt32 cellColSpan = aState.tableFrame->GetEffectiveColSpan(((nsTableCellFrame *)kidFrame)->GetColIndex(),
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((nsTableCellFrame *)kidFrame));
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nscoord availWidth = 0;
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for (PRInt32 numColSpan=0; numColSpan<cellColSpan; numColSpan++)
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{
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availWidth += aState.tableFrame->GetColumnWidth(cellColIndex+numColSpan);
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if (numColSpan != 0)
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{
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availWidth += cellSpacing;
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}
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if (PR_TRUE==gsDebug)
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printf(" in loop, availWidth set to %d from colIndex %d width %d and cellSpacing\n",
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availWidth, cellColIndex, aState.tableFrame->GetColumnWidth(cellColIndex+numColSpan), cellSpacing);
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}
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if (PR_TRUE==gsDebug) printf(" availWidth for this cell is %d\n", availWidth);
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prevColIndex = cellColIndex + (cellColSpan-1); // remember the rightmost column this cell spans into
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nsReflowMetrics desiredSize(pKidMaxElementSize);
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// If the available width is the same as last time we reflowed the cell,
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// then just use the previous desired size and max element size.
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// if we need the max-element-size we don't need to reflow.
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// we just grab it from the cell frame which remembers it (see the else clause below)
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if (availWidth != ((nsTableCellFrame *)kidFrame)->GetPriorAvailWidth())
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{
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// Always let the cell be as high as it wants. We ignore the height that's
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// passed in and always place the entire row. Let the row group decide
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// whether we fit or wehther the entire row is pushed
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nsSize kidAvailSize(availWidth, NS_UNCONSTRAINEDSIZE);
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// Reflow the child
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kidFrame->WillReflow(aPresContext);
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kidFrame->MoveTo(aState.x, kidMargin.top);
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nsReflowState kidReflowState(kidFrame, aState.reflowState, kidAvailSize,
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eReflowReason_Resize);
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if (gsDebug) printf ("%p RR: avail=%d\n", this, availWidth);
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nsReflowStatus status = ReflowChild(kidFrame, &aPresContext, desiredSize,
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kidReflowState);
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if (gsDebug) printf ("%p RR: desired=%d\n", this, desiredSize.width);
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NS_ASSERTION(NS_FRAME_IS_COMPLETE(status), "unexpected reflow status");
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if (gsDebug)
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{
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if (nsnull!=pKidMaxElementSize)
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printf("reflow of cell returned result = %s with desired=%d,%d, min = %d,%d\n",
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NS_FRAME_IS_COMPLETE(status)?"complete":"NOT complete",
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desiredSize.width, desiredSize.height,
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pKidMaxElementSize->width, pKidMaxElementSize->height);
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else
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printf("reflow of cell returned result = %s with desired=%d,%d, min = nsnull\n",
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NS_FRAME_IS_COMPLETE(status)?"complete":"NOT complete",
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desiredSize.width, desiredSize.height);
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}
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}
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else
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{
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nsSize priorSize = ((nsTableCellFrame *)kidFrame)->GetDesiredSize();
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desiredSize.width = priorSize.width;
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desiredSize.height = priorSize.height;
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if (nsnull != pKidMaxElementSize)
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*pKidMaxElementSize = ((nsTableCellFrame *)kidFrame)->GetMaxElementSize();
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}
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// Place the child after taking into account its margin and attributes
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nscoord specifiedHeight = 0;
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nscoord cellHeight = desiredSize.height;
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nsIStyleContextPtr kidSC;
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kidFrame->GetStyleContext(&aPresContext, kidSC.AssignRef());
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const nsStylePosition* kidPosition = (const nsStylePosition*)
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kidSC->GetStyleData(eStyleStruct_Position);
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switch (kidPosition->mHeight.GetUnit()) {
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case eStyleUnit_Coord:
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specifiedHeight = kidPosition->mHeight.GetCoordValue();
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break;
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case eStyleUnit_Inherit:
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// XXX for now, do nothing
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default:
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case eStyleUnit_Auto:
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break;
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}
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if (specifiedHeight>cellHeight)
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cellHeight = specifiedHeight;
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nscoord cellWidth = desiredSize.width;
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// begin special Nav4 compatibility code
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if (0==cellWidth)
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{
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cellWidth = availWidth;
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}
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// end special Nav4 compatibility code
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// Place the child
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nsRect kidRect (aState.x, kidMargin.top, cellWidth, cellHeight);
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PlaceChild(aPresContext, aState, kidFrame, kidRect, aDesiredSize.maxElementSize,
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pKidMaxElementSize);
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if (PR_TRUE==gsDebug) printf(" past PlaceChild, aState.x set to %d\n", aState.x);
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// Get the next child
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kidFrame->GetNextSibling(kidFrame);
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}
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SetMaxChildHeight(aState.maxCellHeight,maxCellTopMargin, maxCellBottomMargin); // remember height of tallest child who doesn't have a row span
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// Return our desired size. Note that our desired width is just whatever width
|
|
// we were given by the row group frame
|
|
aDesiredSize.width = aState.x;
|
|
aDesiredSize.height = aState.maxCellVertSpace;
|
|
|
|
if (gsDebug)
|
|
printf("rr -- row %p width = %d from maxSize %d\n",
|
|
this, aDesiredSize.width, aState.reflowState.maxSize.width);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/**
|
|
* Called for the initial reflow. Creates each table cell frame, and
|
|
* reflows it to gets its minimum and maximum sizes
|
|
*/
|
|
nsresult
|
|
nsTableRowFrame::InitialReflow(nsIPresContext& aPresContext,
|
|
RowReflowState& aState,
|
|
nsReflowMetrics& aDesiredSize)
|
|
{
|
|
// For our initial reflow we expect to be given an unconstrained width
|
|
NS_PRECONDITION(NS_UNCONSTRAINEDSIZE == aState.availSize.width, "bad size");
|
|
|
|
// Place our children, one at a time, until we are out of children
|
|
nsSize kidMaxElementSize;
|
|
PRInt32 kidIndex = 0;
|
|
PRInt32 colIndex = 0;
|
|
nsIFrame* prevKidFrame = nsnull;
|
|
nscoord maxTopMargin = 0;
|
|
nscoord maxBottomMargin = 0;
|
|
nscoord x = 0;
|
|
nsresult result = NS_OK;
|
|
PRBool isFirst=PR_TRUE;
|
|
|
|
for (;;) {
|
|
// Get the next content object
|
|
nsIContent* cell;
|
|
mContent->ChildAt(kidIndex, cell);
|
|
if (nsnull == cell) {
|
|
break; // no more content
|
|
}
|
|
|
|
// what row am I?
|
|
if (PR_TRUE==isFirst)
|
|
SetRowIndex(aState.tableFrame->GetNextAvailRowIndex());
|
|
|
|
// what column does this cell belong to?
|
|
colIndex = aState.tableFrame->GetNextAvailColIndex(mRowIndex, colIndex);
|
|
if (gsDebug) printf("%p : next col index = %d\n", this, colIndex);
|
|
|
|
/* for style context optimization, set the content's column index if possible.
|
|
* this can only be done if we really have an nsTableCell.
|
|
* other tags mapped to table cell display won't benefit from this optimization
|
|
* see nsHTMLStyleSheet::RulesMatching
|
|
*/
|
|
nsITableContent *tableContentInterface = nsnull;
|
|
nsresult rv = cell->QueryInterface(kITableContentIID,
|
|
(void **)&tableContentInterface); // tableContentInterface: REFCNT++
|
|
if (NS_SUCCEEDED(rv))
|
|
{ // we know it's a table part of some sort, is it a cell?
|
|
const int contentType = ((nsTableContent *)tableContentInterface)->GetType();
|
|
if (contentType == nsITableContent::kTableCellType)
|
|
{
|
|
((nsTableCell *)tableContentInterface)->SetColIndex(colIndex);
|
|
if (gsDebug) printf("%p : set cell content %p to col index = %d\n", this, tableContentInterface, colIndex);
|
|
}
|
|
NS_RELEASE(tableContentInterface);
|
|
}
|
|
// part of the style optimization is to ensure that the column frame for the cell exists
|
|
// we used to do this post-pass1, now we do it incrementally for the optimization
|
|
nsReflowStatus status;
|
|
aState.tableFrame->EnsureColumnFrameAt(colIndex,
|
|
&aPresContext,
|
|
aDesiredSize,
|
|
aState.reflowState,
|
|
status);
|
|
// Create a child frame -- always an nsTableCellFrame
|
|
nsIStyleContext* kidSC = aPresContext.ResolveStyleContextFor(cell, this, PR_FALSE);
|
|
nsIContentDelegate* kidDel = cell->GetDelegate(&aPresContext);
|
|
nsIFrame* kidFrame;
|
|
|
|
nsresult result = kidDel->CreateFrame(&aPresContext, cell, this, kidSC, kidFrame);
|
|
NS_RELEASE(kidDel);
|
|
NS_RELEASE(cell);
|
|
if (NS_FAILED(result)) {
|
|
NS_RELEASE(kidSC);
|
|
break;
|
|
}
|
|
// this sets the frame's notion of it's column index
|
|
((nsTableCellFrame *)kidFrame)->SetColIndex(colIndex);
|
|
if (gsDebug) printf("%p : set cell frame %p to col index = %d\n", this, kidFrame, colIndex);
|
|
// add the cell frame to the table's cell map
|
|
aState.tableFrame->AddCellToTable(this, (nsTableCellFrame *)kidFrame, isFirst);
|
|
|
|
// Because we're not splittable always allow the child to be as high as
|
|
// it wants. The default available width is also unconstrained so we can
|
|
// get the child's maximum width
|
|
nsSize kidAvailSize(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
|
|
NS_IF_RELEASE(kidSC);
|
|
|
|
// Get the child's margins
|
|
nsMargin margin;
|
|
nscoord topMargin = 0;
|
|
|
|
if (aState.tableFrame->GetCellMarginData((nsTableCellFrame *)kidFrame, margin) == NS_OK)
|
|
{
|
|
topMargin = margin.top;
|
|
}
|
|
|
|
maxTopMargin = PR_MAX(margin.top, maxTopMargin);
|
|
maxBottomMargin = PR_MAX(margin.bottom, maxBottomMargin);
|
|
|
|
// Link child frame into the list of children
|
|
if (nsnull != prevKidFrame) {
|
|
prevKidFrame->SetNextSibling(kidFrame);
|
|
} else {
|
|
mFirstChild = kidFrame; // our first child
|
|
SetFirstContentOffset(kidIndex);
|
|
}
|
|
mChildCount++;
|
|
|
|
// Reflow the child. We always want back the max element size even if the
|
|
// caller doesn't ask for it, because the table needs it to compute column
|
|
// widths
|
|
nsReflowMetrics kidSize(&kidMaxElementSize);
|
|
nsReflowState kidReflowState(kidFrame, aState.reflowState, kidAvailSize,
|
|
eReflowReason_Initial);
|
|
kidFrame->WillReflow(aPresContext);
|
|
if (gsDebug) printf ("%p InitR: avail=%d\n", this, kidAvailSize.width);
|
|
status = ReflowChild(kidFrame, &aPresContext, kidSize, kidReflowState);
|
|
if (gsDebug)
|
|
printf ("TR %p for cell %p Initial Reflow: desired=%d, MES=%d\n",
|
|
this, kidFrame, kidSize.width, kidMaxElementSize.width);
|
|
//XXX: this is a hack, shouldn't it be the case that a min size is
|
|
// never larger than a desired size?
|
|
if (kidMaxElementSize.width>kidSize.width)
|
|
kidSize.width = kidMaxElementSize.width;
|
|
if (kidMaxElementSize.height>kidSize.height)
|
|
kidSize.height = kidMaxElementSize.height;
|
|
((nsTableCellFrame *)kidFrame)->SetPass1DesiredSize(kidSize);
|
|
((nsTableCellFrame *)kidFrame)->SetPass1MaxElementSize(kidMaxElementSize);
|
|
NS_ASSERTION(NS_FRAME_IS_COMPLETE(status), "unexpected child reflow status");
|
|
|
|
if (gsDebug)
|
|
{
|
|
printf("reflow of cell returned result = %s with desired=%d,%d, min = %d,%d\n",
|
|
NS_FRAME_IS_COMPLETE(status)?"complete":"NOT complete",
|
|
kidSize.width, kidSize.height,
|
|
kidMaxElementSize.width, kidMaxElementSize.height);
|
|
}
|
|
|
|
// Place the child
|
|
x += margin.left;
|
|
nsRect kidRect(x, topMargin, kidSize.width, kidSize.height);
|
|
PlaceChild(aPresContext, aState, kidFrame, kidRect, aDesiredSize.maxElementSize,
|
|
&kidMaxElementSize);
|
|
x += kidSize.width + margin.right;
|
|
|
|
// Move to the next content child
|
|
prevKidFrame = kidFrame;
|
|
kidIndex++;
|
|
isFirst=PR_FALSE;
|
|
}
|
|
|
|
SetMaxChildHeight(aState.maxCellHeight, maxTopMargin, maxBottomMargin); // remember height of tallest child who doesn't have a row span
|
|
|
|
// Return our desired size
|
|
aDesiredSize.width = x;
|
|
aDesiredSize.height = aState.maxCellVertSpace;
|
|
|
|
if (gsDebug)
|
|
printf("initial -- row %p width = %d MES=%d from maxSize %d\n",
|
|
this, aDesiredSize.width, aDesiredSize.maxElementSize->width,
|
|
aState.reflowState.maxSize.width);
|
|
|
|
// Update the content mapping
|
|
if (nsnull != prevKidFrame) {
|
|
SetLastContentOffset(kidIndex - 1);
|
|
#ifdef NS_DEBUG
|
|
NS_ASSERTION(IsLastChild(prevKidFrame), "bad last child");
|
|
PRInt32 len = LengthOf(mFirstChild);
|
|
NS_ASSERTION(len == mChildCount, "bad child count");
|
|
#endif
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// Recover the reflow state to what it should be if aKidFrame is about
|
|
// to be reflowed
|
|
//
|
|
// The things in the RowReflowState object we need to restore are:
|
|
// - maxCellHeight
|
|
// - maxVertCellSpace
|
|
// - x
|
|
nsresult nsTableRowFrame::RecoverState(nsIPresContext& aPresContext,
|
|
RowReflowState& aState,
|
|
nsIFrame* aKidFrame,
|
|
nscoord& aMaxCellTopMargin,
|
|
nscoord& aMaxCellBottomMargin)
|
|
{
|
|
aMaxCellTopMargin = aMaxCellBottomMargin = 0;
|
|
|
|
// Walk the list of children looking for aKidFrame. While we're at
|
|
// it get the maxCellHeight and maxVertCellSpace for all the
|
|
// frames except aKidFrame
|
|
// nsIFrame* prevKidFrame = nsnull;
|
|
for (nsIFrame* frame = mFirstChild; nsnull != frame;) {
|
|
if (frame != aKidFrame) {
|
|
// Update the max top and bottom margins
|
|
nsMargin kidMargin;
|
|
aState.tableFrame->GetCellMarginData((nsTableCellFrame *)frame, kidMargin);
|
|
if (kidMargin.top > aMaxCellTopMargin)
|
|
aMaxCellTopMargin = kidMargin.top;
|
|
if (kidMargin.bottom > aMaxCellBottomMargin)
|
|
aMaxCellBottomMargin = kidMargin.bottom;
|
|
|
|
PRInt32 rowSpan = aState.tableFrame->GetEffectiveRowSpan(mRowIndex, ((nsTableCellFrame *)frame));
|
|
if (mMinRowSpan == rowSpan) {
|
|
// Get the cell's desired height the last time it was reflowed
|
|
nsSize desiredSize = ((nsTableCellFrame *)frame)->GetDesiredSize();
|
|
|
|
// See if it has a specified height that overrides the desired size
|
|
nscoord specifiedHeight = 0;
|
|
nsIStyleContextPtr kidSC;
|
|
frame->GetStyleContext(&aPresContext, kidSC.AssignRef());
|
|
const nsStylePosition* kidPosition = (const nsStylePosition*)
|
|
kidSC->GetStyleData(eStyleStruct_Position);
|
|
switch (kidPosition->mHeight.GetUnit()) {
|
|
case eStyleUnit_Coord:
|
|
specifiedHeight = kidPosition->mHeight.GetCoordValue();
|
|
break;
|
|
|
|
case eStyleUnit_Inherit:
|
|
// XXX for now, do nothing
|
|
default:
|
|
case eStyleUnit_Auto:
|
|
break;
|
|
}
|
|
if (specifiedHeight > desiredSize.height)
|
|
desiredSize.height = specifiedHeight;
|
|
|
|
// Update maxCellHeight
|
|
if (desiredSize.height > aState.maxCellHeight) {
|
|
aState.maxCellHeight = desiredSize.height;
|
|
}
|
|
|
|
// Update maxCellVertHeight
|
|
nsMargin margin;
|
|
|
|
if (aState.tableFrame->GetCellMarginData((nsTableCellFrame *)frame, margin) == NS_OK)
|
|
{
|
|
nscoord height = desiredSize.height + margin.top + margin.bottom;
|
|
if (height > aState.maxCellVertSpace) {
|
|
aState.maxCellVertSpace = height;
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXX We also need to recover the max element size if requested by the
|
|
// caller...
|
|
//
|
|
// We should be using GetReflowMetrics() to get information from the
|
|
// table cell, and that will include the max element size...
|
|
}
|
|
|
|
// Remember the frame that precedes aKidFrame
|
|
// prevKidFrame = frame;
|
|
frame->GetNextSibling(frame);
|
|
}
|
|
|
|
// Update the running x-offset based on the frame's current x-origin
|
|
nsPoint origin;
|
|
aKidFrame->GetOrigin(origin);
|
|
aState.x = origin.x;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsTableRowFrame::IncrementalReflow(nsIPresContext& aPresContext,
|
|
RowReflowState& aState,
|
|
nsReflowMetrics& aDesiredSize)
|
|
{
|
|
nsresult status;
|
|
|
|
// XXX Deal with the case where the reflow command is targeted at us
|
|
nsIFrame* target;
|
|
aState.reflowState.reflowCommand->GetTarget(target);
|
|
if (this == target) {
|
|
NS_NOTYETIMPLEMENTED("unexpected reflow command");
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
// Get the next frame in the reflow chain
|
|
nsIFrame* kidFrame;
|
|
aState.reflowState.reflowCommand->GetNext(kidFrame);
|
|
|
|
// Recover our reflow state
|
|
nscoord maxCellTopMargin, maxCellBottomMargin;
|
|
RecoverState(aPresContext, aState, kidFrame, maxCellTopMargin, maxCellBottomMargin);
|
|
|
|
// Get the frame's margins
|
|
nsMargin kidMargin;
|
|
aState.tableFrame->GetCellMarginData((nsTableCellFrame *)kidFrame, kidMargin);
|
|
if (kidMargin.top > maxCellTopMargin)
|
|
maxCellTopMargin = kidMargin.top;
|
|
if (kidMargin.bottom > maxCellBottomMargin)
|
|
maxCellBottomMargin = kidMargin.bottom;
|
|
|
|
// At this point, we know the column widths. Get the available width
|
|
// from the known column widths
|
|
PRInt32 cellColIndex = ((nsTableCellFrame *)kidFrame)->GetColIndex();
|
|
PRInt32 cellColSpan = aState.tableFrame->GetEffectiveColSpan(((nsTableCellFrame *)kidFrame)->GetColIndex(),
|
|
((nsTableCellFrame *)kidFrame));
|
|
nscoord availWidth = 0;
|
|
for (PRInt32 numColSpan = 0; numColSpan < cellColSpan; numColSpan++)
|
|
{
|
|
availWidth += aState.tableFrame->GetColumnWidth(cellColIndex+numColSpan);
|
|
if (0<numColSpan)
|
|
{
|
|
availWidth += kidMargin.right;
|
|
if (0!=cellColIndex)
|
|
availWidth += kidMargin.left;
|
|
}
|
|
}
|
|
|
|
// Always let the cell be as high as it wants. We ignore the height that's
|
|
// passed in and always place the entire row. Let the row group decide
|
|
// whether we fit or wehther the entire row is pushed
|
|
nsSize kidAvailSize(availWidth, NS_UNCONSTRAINEDSIZE);
|
|
|
|
// Pass along the reflow command
|
|
nsSize kidMaxElementSize;
|
|
nsReflowMetrics desiredSize(&kidMaxElementSize);
|
|
nsReflowState kidReflowState(kidFrame, aState.reflowState, kidAvailSize);
|
|
kidFrame->WillReflow(aPresContext);
|
|
kidFrame->MoveTo(aState.x, kidMargin.top);
|
|
|
|
// XXX Unfortunately we need to reflow the child several times.
|
|
// The first time is for the incremental reflow command. We can't pass in
|
|
// a max width of NS_UNCONSTRAINEDSIZE, because the max width must match
|
|
// the width of the previous reflow...
|
|
status = ReflowChild(kidFrame, &aPresContext, desiredSize, kidReflowState);
|
|
|
|
// Now do the regular pass 1 reflow and gather the max width and max element
|
|
// size.
|
|
// XXX It would be nice if we could skip this step and the next step if the
|
|
// column width isn't dependent on the max cell width...
|
|
kidReflowState.reason = eReflowReason_Resize;
|
|
kidReflowState.reflowCommand = nsnull;
|
|
kidReflowState.maxSize.width = NS_UNCONSTRAINEDSIZE;
|
|
status = ReflowChild(kidFrame, &aPresContext, desiredSize, kidReflowState);
|
|
if (gsDebug)
|
|
printf ("TR %p for cell %p Incremental Reflow: desired=%d, MES=%d\n",
|
|
this, kidFrame, desiredSize.width, kidMaxElementSize.width);
|
|
// Update the cell layout data.
|
|
//XXX: this is a hack, shouldn't it be the case that a min size is
|
|
// never larger than a desired size?
|
|
if (kidMaxElementSize.width>desiredSize.width)
|
|
desiredSize.width = kidMaxElementSize.width;
|
|
if (kidMaxElementSize.height>desiredSize.height)
|
|
desiredSize.height = kidMaxElementSize.height;
|
|
((nsTableCellFrame *)kidFrame)->SetPass1DesiredSize(desiredSize);
|
|
((nsTableCellFrame *)kidFrame)->SetPass1MaxElementSize(kidMaxElementSize);
|
|
|
|
// Now reflow the cell again this time constraining the width
|
|
// XXX Ignore for now the possibility that the column width has changed...
|
|
kidReflowState.maxSize.width = availWidth;
|
|
status = ReflowChild(kidFrame, &aPresContext, desiredSize, kidReflowState);
|
|
|
|
// Place the child after taking into account it's margin and attributes
|
|
// XXX We need to ask the table (or the table layout strategy) if the column
|
|
// widths have changed. If so, we just bail and return a status indicating
|
|
// what happened and let the table reflow all the table cells...
|
|
nscoord specifiedHeight = 0;
|
|
nscoord cellHeight = desiredSize.height;
|
|
nsIStyleContextPtr kidSC;
|
|
kidFrame->GetStyleContext(&aPresContext, kidSC.AssignRef());
|
|
const nsStylePosition* kidPosition = (const nsStylePosition*)
|
|
kidSC->GetStyleData(eStyleStruct_Position);
|
|
switch (kidPosition->mHeight.GetUnit()) {
|
|
case eStyleUnit_Coord:
|
|
specifiedHeight = kidPosition->mHeight.GetCoordValue();
|
|
break;
|
|
|
|
case eStyleUnit_Inherit:
|
|
// XXX for now, do nothing
|
|
default:
|
|
case eStyleUnit_Auto:
|
|
break;
|
|
}
|
|
if (specifiedHeight>cellHeight)
|
|
cellHeight = specifiedHeight;
|
|
|
|
nscoord cellWidth = desiredSize.width;
|
|
// begin special Nav4 compatibility code
|
|
if (0==cellWidth)
|
|
{
|
|
cellWidth = aState.tableFrame->GetColumnWidth(cellColIndex);
|
|
}
|
|
// end special Nav4 compatibility code
|
|
|
|
// Now place the child
|
|
nsRect kidRect (aState.x, kidMargin.top, cellWidth, cellHeight);
|
|
|
|
PlaceChild(aPresContext, aState, kidFrame, kidRect, aDesiredSize.maxElementSize,
|
|
&kidMaxElementSize);
|
|
|
|
SetMaxChildHeight(aState.maxCellHeight, maxCellTopMargin, maxCellBottomMargin);
|
|
|
|
// Return our desired size. Note that our desired width is just whatever width
|
|
// we were given by the row group frame
|
|
aDesiredSize.width = aState.availSize.width;
|
|
aDesiredSize.height = aState.maxCellVertSpace;
|
|
|
|
if (gsDebug)
|
|
printf("incr -- row %p width = %d MES=%d from maxSize %d\n",
|
|
this, aDesiredSize.width, aDesiredSize.maxElementSize->width,
|
|
aState.reflowState.maxSize.width);
|
|
|
|
return status;
|
|
}
|
|
|
|
/** Layout the entire row.
|
|
* This method stacks cells horizontally according to HTML 4.0 rules.
|
|
*/
|
|
NS_METHOD
|
|
nsTableRowFrame::Reflow(nsIPresContext& aPresContext,
|
|
nsReflowMetrics& aDesiredSize,
|
|
const nsReflowState& aReflowState,
|
|
nsReflowStatus& aStatus)
|
|
{
|
|
if (gsDebug==PR_TRUE)
|
|
printf("nsTableRowFrame::Reflow - aMaxSize = %d, %d\n",
|
|
aReflowState.maxSize.width, aReflowState.maxSize.height);
|
|
#ifdef NS_DEBUG
|
|
PreReflowCheck();
|
|
#endif
|
|
|
|
// Initialize 'out' parameters
|
|
if (nsnull != aDesiredSize.maxElementSize) {
|
|
aDesiredSize.maxElementSize->width = 0;
|
|
aDesiredSize.maxElementSize->height = 0;
|
|
}
|
|
aStatus = NS_FRAME_COMPLETE; // we're never continued
|
|
|
|
// Initialize our internal data
|
|
ResetMaxChildHeight();
|
|
|
|
// Initialize our automatic state object
|
|
nsTableFrame* tableFrame;
|
|
mContentParent->GetContentParent((nsIFrame*&)tableFrame);
|
|
RowReflowState state(aReflowState, tableFrame);
|
|
|
|
// Do the reflow
|
|
nsresult result;
|
|
|
|
switch (aReflowState.reason) {
|
|
case eReflowReason_Initial:
|
|
NS_ASSERTION(nsnull == mFirstChild, "unexpected reflow reason");
|
|
result = InitialReflow(aPresContext, state, aDesiredSize);
|
|
GetMinRowSpan(tableFrame);
|
|
FixMinCellHeight(tableFrame);
|
|
break;
|
|
|
|
case eReflowReason_Resize:
|
|
result = ResizeReflow(aPresContext, state, aDesiredSize);
|
|
break;
|
|
|
|
case eReflowReason_Incremental:
|
|
result = IncrementalReflow(aPresContext, state, aDesiredSize);
|
|
break;
|
|
|
|
}
|
|
|
|
#ifdef NS_DEBUG
|
|
PostReflowCheck(aStatus);
|
|
#endif
|
|
|
|
if (gsDebug==PR_TRUE)
|
|
{
|
|
if (nsnull!=aDesiredSize.maxElementSize)
|
|
printf("nsTableRowFrame::RR returning: %s with aDesiredSize=%d,%d, aMES=%d,%d\n",
|
|
NS_FRAME_IS_COMPLETE(aStatus)?"Complete":"Not Complete",
|
|
aDesiredSize.width, aDesiredSize.height,
|
|
aDesiredSize.maxElementSize->width, aDesiredSize.maxElementSize->height);
|
|
else
|
|
printf("nsTableRowFrame::RR returning: %s with aDesiredSize=%d,%d, aMES=NSNULL\n",
|
|
NS_FRAME_IS_COMPLETE(aStatus)?"Complete":"Not Complete",
|
|
aDesiredSize.width, aDesiredSize.height);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
NS_METHOD
|
|
nsTableRowFrame::CreateContinuingFrame(nsIPresContext& aPresContext,
|
|
nsIFrame* aParent,
|
|
nsIStyleContext* aStyleContext,
|
|
nsIFrame*& aContinuingFrame)
|
|
{
|
|
// Because rows are always complete we should never be asked to create
|
|
// a continuing frame
|
|
NS_ERROR("Unexpected request");
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
nsresult nsTableRowFrame::NewFrame( nsIFrame** aInstancePtrResult,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParent)
|
|
{
|
|
NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
|
|
if (nsnull == aInstancePtrResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
nsIFrame* it = new nsTableRowFrame(aContent, aParent);
|
|
if (nsnull == it) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
*aInstancePtrResult = it;
|
|
return NS_OK;
|
|
}
|
|
|