зеркало из https://github.com/mozilla/gecko-dev.git
632 строки
19 KiB
C++
632 строки
19 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 "nsTableCellFrame.h"
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#include "nsCellLayoutData.h"
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#include "nsBodyFrame.h"
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#include "nsIReflowCommand.h"
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsIPresContext.h"
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#include "nsIRenderingContext.h"
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#include "nsCSSRendering.h"
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#include "nsIContent.h"
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#include "nsIContentDelegate.h"
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#include "nsCSSLayout.h"
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#include "nsHTMLValue.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLIIDs.h"
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#include "nsIPtr.h"
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#include "nsIView.h"
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// dependancy on content
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#include "nsHTMLTagContent.h"
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NS_DEF_PTR(nsIStyleContext);
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const nsIID kTableCellFrameCID = NS_TABLECELLFRAME_CID;
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#ifdef NS_DEBUG
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static PRBool gsDebug = PR_FALSE;
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static PRBool gsDebugNT = PR_FALSE;
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//#define NOISY_STYLE
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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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static const PRBool gsDebugNT = PR_FALSE;
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#endif
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/**
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*/
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nsTableCellFrame::nsTableCellFrame(nsIContent* aContent,
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nsIFrame* aParentFrame)
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: nsContainerFrame(aContent, aParentFrame),
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mCellLayoutData(nsnull)
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{
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mRowSpan=1;
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mColSpan=1;
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mColIndex=0;
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mPriorAvailWidth=0;
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mPriorDesiredSize.width=0;
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mPriorDesiredSize.height=0;
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}
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nsTableCellFrame::~nsTableCellFrame()
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{
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if (nsnull!=mCellLayoutData)
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delete mCellLayoutData;
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}
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NS_METHOD nsTableCellFrame::Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect)
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{
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const nsStyleDisplay* disp =
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(const nsStyleDisplay*)mStyleContext->GetStyleData(eStyleStruct_Display);
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if (disp->mVisible) {
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const nsStyleColor* myColor =
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(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
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const nsStyleSpacing* mySpacing =
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(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
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NS_ASSERTION(nsnull!=myColor, "bad style color");
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NS_ASSERTION(nsnull!=mySpacing, "bad style spacing");
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nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
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aDirtyRect, mRect, *myColor);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
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aDirtyRect, mRect, *mySpacing, 0);
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}
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// for debug...
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if (nsIFrame::GetShowFrameBorders()) {
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aRenderingContext.SetColor(NS_RGB(0,128,128));
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aRenderingContext.DrawRect(0, 0, mRect.width, mRect.height);
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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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/**
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*
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* Align the cell's child frame within the cell
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*
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**/
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void nsTableCellFrame::VerticallyAlignChild(nsIPresContext* aPresContext)
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{
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const nsStyleSpacing* spacing =
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(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
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const nsStyleText* textStyle =
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(const nsStyleText*)mStyleContext->GetStyleData(eStyleStruct_Text);
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nsMargin borderPadding;
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spacing->CalcBorderPaddingFor(this, borderPadding);
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nscoord topInset = borderPadding.top;
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nscoord bottomInset = borderPadding.bottom;
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PRUint8 verticalAlignFlags = NS_STYLE_VERTICAL_ALIGN_MIDDLE;
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if (textStyle->mVerticalAlign.GetUnit() == eStyleUnit_Enumerated) {
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verticalAlignFlags = textStyle->mVerticalAlign.GetIntValue();
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}
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nscoord height = mRect.height;
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nsRect kidRect;
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mFirstChild->GetRect(kidRect);
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nscoord childHeight = kidRect.height;
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// Vertically align the child
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nscoord kidYTop = 0;
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switch (verticalAlignFlags)
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{
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case NS_STYLE_VERTICAL_ALIGN_BASELINE:
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// Align the child's baseline at the max baseline
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//kidYTop = aMaxAscent - kidAscent;
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break;
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case NS_STYLE_VERTICAL_ALIGN_TOP:
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// Align the top of the child frame with the top of the box,
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// minus the top padding
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kidYTop = topInset;
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break;
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case NS_STYLE_VERTICAL_ALIGN_BOTTOM:
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kidYTop = height - childHeight - bottomInset;
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break;
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default:
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case NS_STYLE_VERTICAL_ALIGN_MIDDLE:
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kidYTop = height/2 - childHeight/2;
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}
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mFirstChild->MoveTo(kidRect.x, kidYTop);
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}
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void nsTableCellFrame::CreatePsuedoFrame(nsIPresContext* aPresContext)
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{
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// Do we have a prev-in-flow?
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if (nsnull == mPrevInFlow) {
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// No, create a column pseudo frame
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nsBodyFrame::NewFrame(&mFirstChild, mContent, this);
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mChildCount = 1;
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// Resolve style and set the style context
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nsIStyleContext* styleContext =
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aPresContext->ResolveStyleContextFor(mContent, this); // styleContext: ADDREF++
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mFirstChild->SetStyleContext(aPresContext,styleContext);
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NS_RELEASE(styleContext); // styleContext: ADDREF--
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} else {
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nsTableCellFrame* prevFrame = (nsTableCellFrame *)mPrevInFlow;
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nsIFrame* prevPseudoFrame = prevFrame->mFirstChild;
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NS_ASSERTION(prevFrame->ChildIsPseudoFrame(prevPseudoFrame), "bad previous pseudo-frame");
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// Create a continuing column
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nsIStyleContext* kidSC;
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prevPseudoFrame->GetStyleContext(aPresContext, kidSC);
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prevPseudoFrame->CreateContinuingFrame(aPresContext, this, kidSC, mFirstChild);
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NS_RELEASE(kidSC);
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mChildCount = 1;
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}
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}
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/*
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* Should this be performanced tuned? This is called
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* in resize/reflow. Maybe we should cache the table
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* frame in the table cell frame.
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*
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*/
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nsTableFrame* nsTableCellFrame::GetTableFrame()
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{
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nsIFrame* frame = nsnull;
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nsresult result;
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result = GetContentParent(frame); // Get RowFrame
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if ((result == NS_OK) && (frame != nsnull))
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frame->GetContentParent(frame); // Get RowGroupFrame
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if ((result == NS_OK) && (frame != nsnull))
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frame->GetContentParent(frame); // Get TableFrame
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return (nsTableFrame*)frame;
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}
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/**
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*/
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NS_METHOD nsTableCellFrame::Reflow(nsIPresContext* aPresContext,
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nsReflowMetrics& aDesiredSize,
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const nsReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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NS_PRECONDITION(nsnull!=aPresContext, "bad arg");
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#ifdef NS_DEBUG
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//PreReflowCheck();
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#endif
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// Initialize out parameter
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if (nsnull != aDesiredSize.maxElementSize) {
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aDesiredSize.maxElementSize->width = 0;
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aDesiredSize.maxElementSize->height = 0;
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}
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aStatus = NS_FRAME_COMPLETE;
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if (PR_TRUE==gsDebug || PR_TRUE==gsDebugNT)
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printf("%p nsTableCellFrame::Reflow: maxSize=%d,%d\n",
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this, aReflowState.maxSize.width, aReflowState.maxSize.height);
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mFirstContentOffset = mLastContentOffset = 0;
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nsSize availSize(aReflowState.maxSize);
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nsSize maxElementSize;
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nsSize *pMaxElementSize = aDesiredSize.maxElementSize;
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if (NS_UNCONSTRAINEDSIZE==aReflowState.maxSize.width)
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pMaxElementSize = &maxElementSize;
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nscoord x = 0;
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// SEC: what about ascent and decent???
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// Compute the insets (sum of border and padding)
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const nsStyleSpacing* spacing =
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(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
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nsMargin borderPadding;
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spacing->CalcBorderPaddingFor(this, borderPadding);
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nscoord topInset = borderPadding.top;
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nscoord rightInset = borderPadding.right;
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nscoord bottomInset = borderPadding.bottom;
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nscoord leftInset = borderPadding.left;
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// Get the margin information, available space should
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// be reduced accordingly
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nsMargin margin(0,0,0,0);
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nsTableFrame* tableFrame = GetTableFrame();
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tableFrame->GetCellMarginData(this,margin);
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mLastContentIsComplete = PR_TRUE;
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// get frame, creating one if needed
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if (nsnull==mFirstChild)
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{
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CreatePsuedoFrame(aPresContext);
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}
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// reduce available space by insets, if we're in a constrained situation
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if (NS_UNCONSTRAINEDSIZE!=availSize.width)
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availSize.width -= leftInset+rightInset;
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if (NS_UNCONSTRAINEDSIZE!=availSize.height)
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availSize.height -= topInset+bottomInset+margin.top+margin.bottom;
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// Try to reflow the child into the available space. It might not
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// fit or might need continuing.
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if (availSize.height < 0)
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availSize.height = 1;
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nsSize maxKidElementSize;
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if (gsDebug==PR_TRUE)
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printf(" nsTableCellFrame::ResizeReflow calling ReflowChild with availSize=%d,%d\n",
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availSize.width, availSize.height);
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nsReflowMetrics kidSize(pMaxElementSize);
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kidSize.width=kidSize.height=kidSize.ascent=kidSize.descent=0;
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SetPriorAvailWidth(aReflowState.maxSize.width);
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nsReflowState kidReflowState(mFirstChild, aReflowState, availSize);
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mFirstChild->WillReflow(*aPresContext);
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mFirstChild->MoveTo(leftInset, topInset);
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aStatus = ReflowChild(mFirstChild, aPresContext, kidSize, kidReflowState);
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SetPriorDesiredSize(kidSize);
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if (PR_TRUE==gsDebug || PR_TRUE==gsDebugNT)
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{
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if (nsnull!=pMaxElementSize)
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printf(" %p cellFrame child returned desiredSize=%d,%d,\
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and maxElementSize=%d,%d\n",
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this, kidSize.width, kidSize.height,
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pMaxElementSize->width, pMaxElementSize->height);
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else
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printf(" %p cellFrame child returned desiredSize=%d,%d,\
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and maxElementSize=nsnull\n",
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this, kidSize.width, kidSize.height);
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}
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SetFirstContentOffset(mFirstChild);
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SetLastContentOffset(mFirstChild);
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// Place the child
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mFirstChild->SetRect(nsRect(leftInset, topInset,
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kidSize.width, kidSize.height));
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if (NS_FRAME_IS_NOT_COMPLETE(aStatus)) {
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// If the child didn't finish layout then it means that it used
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// up all of our available space (or needs us to split).
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mLastContentIsComplete = PR_FALSE;
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}
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// Return our size and our result
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// first, compute the height
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// the height can be set w/o being restricted by aMaxSize.height
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nscoord cellHeight = kidSize.height;
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if (NS_UNCONSTRAINEDSIZE!=aReflowState.maxSize.height)
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{
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cellHeight += topInset + bottomInset;
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}
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if (PR_TRUE==gsDebugNT)
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printf(" %p cellFrame height set to %d from kidSize=%d and insets %d,%d\n",
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this, cellHeight, kidSize.height, topInset, bottomInset);
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// next determine the cell's width
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nscoord cellWidth = kidSize.width; // at this point, we've factored in the cell's style attributes
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cellWidth += leftInset + rightInset; // factor in insets
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// Nav4 hack for 0 width cells. If the cell has any content, it must have a desired width of at least 1
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/*
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if (0==cellWidth)
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{
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PRInt32 childCount;
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mFirstChild->ChildCount(childCount);
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if (0!=childCount)
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{
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nsIFrame *grandChild;
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mFirstChild->FirstChild(grandChild);
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grandChild->ChildCount(childCount);
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if (0!=childCount)
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{
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cellWidth=1;
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if (nsnull!=aDesiredSize.maxElementSize && 0==pMaxElementSize->width)
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pMaxElementSize->width=1;
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}
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}
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}
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*/
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// end Nav4 hack for 0 width cells
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// set the cell's desired size and max element size
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aDesiredSize.width = cellWidth;
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aDesiredSize.height = cellHeight;
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aDesiredSize.ascent = topInset;
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aDesiredSize.descent = bottomInset;
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if (nsnull!=aDesiredSize.maxElementSize)
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{
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*aDesiredSize.maxElementSize = *pMaxElementSize;
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aDesiredSize.maxElementSize->height += topInset + bottomInset;
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aDesiredSize.maxElementSize->width += leftInset + rightInset;
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}
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if (PR_TRUE==gsDebug || PR_TRUE==gsDebugNT)
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printf(" %p cellFrame returning aDesiredSize=%d,%d\n",
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this, aDesiredSize.width, aDesiredSize.height);
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#ifdef NS_DEBUG
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//PostReflowCheck(result);
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#endif
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return NS_OK;
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}
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NS_METHOD
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nsTableCellFrame::CreateContinuingFrame(nsIPresContext* aPresContext,
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nsIFrame* aParent,
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nsIStyleContext* aStyleContext,
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nsIFrame*& aContinuingFrame)
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{
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nsTableCellFrame* cf = new nsTableCellFrame(mContent, aParent);
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if (nsnull == cf) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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PrepareContinuingFrame(aPresContext, aParent, aStyleContext, cf);
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aContinuingFrame = cf;
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return NS_OK;
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}
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/**
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*
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* Update the border style to map to the HTML border style
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*
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*/
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void nsTableCellFrame::MapHTMLBorderStyle(nsIPresContext* aPresContext, nsStyleSpacing& aSpacingStyle, nscoord aBorderWidth)
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{
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nsStyleCoord width;
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width.SetCoordValue(aBorderWidth);
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aSpacingStyle.mBorder.SetTop(width);
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aSpacingStyle.mBorder.SetLeft(width);
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aSpacingStyle.mBorder.SetBottom(width);
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aSpacingStyle.mBorder.SetRight(width);
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aSpacingStyle.mBorderStyle[NS_SIDE_TOP] = NS_STYLE_BORDER_STYLE_SOLID;
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aSpacingStyle.mBorderStyle[NS_SIDE_LEFT] = NS_STYLE_BORDER_STYLE_SOLID;
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aSpacingStyle.mBorderStyle[NS_SIDE_BOTTOM] = NS_STYLE_BORDER_STYLE_SOLID;
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aSpacingStyle.mBorderStyle[NS_SIDE_RIGHT] = NS_STYLE_BORDER_STYLE_SOLID;
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nsTableFrame* tableFrame = GetTableFrame();
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nsIStyleContext* styleContext = nsnull;
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tableFrame->GetStyleContext(aPresContext,styleContext);
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const nsStyleColor* colorData = (const nsStyleColor*)styleContext->GetStyleData(eStyleStruct_Color);
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// Look until we find a style context with a NON-transparent background color
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while (styleContext)
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{
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if ((colorData->mBackgroundFlags & NS_STYLE_BG_COLOR_TRANSPARENT)!=0)
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{
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nsIStyleContext* temp = styleContext;
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styleContext = styleContext->GetParent();
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NS_RELEASE(temp);
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colorData = (const nsStyleColor*)styleContext->GetStyleData(eStyleStruct_Color);
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}
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else
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{
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break;
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}
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}
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// Yaahoo, we found a style context which has a background color
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nscolor borderColor = 0xFFC0C0C0;
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if (styleContext != nsnull)
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borderColor = colorData->mBackgroundColor;
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// if the border color is white, then shift to grey
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if (borderColor == 0xFFFFFFFF)
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borderColor = 0xFFC0C0C0;
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aSpacingStyle.mBorderColor[NS_SIDE_TOP] =
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aSpacingStyle.mBorderColor[NS_SIDE_LEFT] =
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aSpacingStyle.mBorderColor[NS_SIDE_BOTTOM] =
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aSpacingStyle.mBorderColor[NS_SIDE_RIGHT] = borderColor;
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}
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PRBool nsTableCellFrame::ConvertToPixelValue(nsHTMLValue& aValue, PRInt32 aDefault, PRInt32& aResult)
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{
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PRInt32 result = 0;
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if (aValue.GetUnit() == eHTMLUnit_Pixel)
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aResult = aValue.GetPixelValue();
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else if (aValue.GetUnit() == eHTMLUnit_Empty)
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aResult = aDefault;
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else
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{
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NS_ERROR("Unit must be pixel or empty");
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return PR_FALSE;
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}
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return PR_TRUE;
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}
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void nsTableCellFrame::MapBorderMarginPadding(nsIPresContext* aPresContext)
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{
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// Check to see if the table has either cell padding or
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// Cell spacing defined for the table. If true, then
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// this setting overrides any specific border, margin or
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// padding information in the cell. If these attributes
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// are not defined, the the cells attributes are used
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nscoord padding = 0;
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nscoord spacing = 0;
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nscoord border = 1;
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float p2t = aPresContext->GetPixelsToTwips();
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nsTableFrame* tableFrame = GetTableFrame();
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tableFrame->GetGeometricParent((nsIFrame *&)tableFrame); // get the outer frame
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NS_ASSERTION(tableFrame,"Table Must not be null");
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if (!tableFrame)
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return;
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// get the table frame style context, and from it get cellpadding, cellspacing, and border info
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nsIStyleContextPtr tableSC;
|
|
tableFrame->GetStyleContext(aPresContext, tableSC.AssignRef());
|
|
nsStyleTable* tableStyle = (nsStyleTable*)tableSC->GetStyleData(eStyleStruct_Table);
|
|
nsStyleSpacing* tableSpacingStyle = (nsStyleSpacing*)tableSC->GetStyleData(eStyleStruct_Spacing);
|
|
nsStyleSpacing* spacingData = (nsStyleSpacing*)mStyleContext->GetMutableStyleData(eStyleStruct_Spacing);
|
|
|
|
// check to see if cellpadding or cellspacing is defined
|
|
if (tableStyle->mCellPadding.GetUnit() != eStyleUnit_Null ||
|
|
tableStyle->mCellSpacing.GetUnit() != eStyleUnit_Null)
|
|
{
|
|
spacingData->mMargin.SetTop(tableStyle->mCellSpacing);
|
|
spacingData->mMargin.SetLeft(tableStyle->mCellSpacing);
|
|
spacingData->mMargin.SetBottom(tableStyle->mCellSpacing);
|
|
spacingData->mMargin.SetRight(tableStyle->mCellSpacing);
|
|
spacingData->mPadding.SetTop(tableStyle->mCellPadding);
|
|
spacingData->mPadding.SetLeft(tableStyle->mCellPadding);
|
|
spacingData->mPadding.SetBottom(tableStyle->mCellPadding);
|
|
spacingData->mPadding.SetRight(tableStyle->mCellPadding);
|
|
}
|
|
|
|
// get border information from the table
|
|
if (tableSpacingStyle->mBorder.GetTopUnit() == eStyleUnit_Coord)
|
|
{
|
|
nsStyleCoord borderWidth;
|
|
tableSpacingStyle->mBorder.GetTop(borderWidth);
|
|
if (0!=borderWidth.GetCoordValue())
|
|
{
|
|
// in HTML, cell borders are always 1 pixel by default
|
|
border = (nscoord)(1*(aPresContext->GetPixelsToTwips()));
|
|
MapHTMLBorderStyle(aPresContext, *spacingData, border);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
void nsTableCellFrame::MapTextAttributes(nsIPresContext* aPresContext)
|
|
{
|
|
nsHTMLValue value;
|
|
|
|
((nsHTMLTagContent*)mContent)->GetAttribute(nsHTMLAtoms::align, value);
|
|
if (value.GetUnit() == eHTMLUnit_Enumerated)
|
|
{
|
|
nsStyleText* text = (nsStyleText*)mStyleContext->GetMutableStyleData(eStyleStruct_Text);
|
|
text->mTextAlign = value.GetIntValue();
|
|
}
|
|
}
|
|
|
|
|
|
// Subclass hook for style post processing
|
|
NS_METHOD nsTableCellFrame::DidSetStyleContext(nsIPresContext* aPresContext)
|
|
{
|
|
#ifdef NOISY_STYLE
|
|
printf("nsTableCellFrame::DidSetStyleContext \n");
|
|
#endif
|
|
|
|
MapTextAttributes(aPresContext);
|
|
MapBorderMarginPadding(aPresContext);
|
|
mStyleContext->RecalcAutomaticData(aPresContext);
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
NS_METHOD
|
|
nsTableCellFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
|
|
{
|
|
NS_PRECONDITION(0 != aInstancePtr, "null ptr");
|
|
if (NULL == aInstancePtr) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
if (aIID.Equals(kTableCellFrameCID)) {
|
|
*aInstancePtr = (void*) (this);
|
|
return NS_OK;
|
|
}
|
|
return nsContainerFrame::QueryInterface(aIID, aInstancePtr);
|
|
}
|
|
|
|
/* ----- static methods ----- */
|
|
|
|
nsresult nsTableCellFrame::NewFrame(nsIFrame** aInstancePtrResult,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParent)
|
|
{
|
|
NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
|
|
if (nsnull == aInstancePtrResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
nsIFrame* it = new nsTableCellFrame(aContent, aParent);
|
|
if (nsnull == it) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
*aInstancePtrResult = it;
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// For Debugging ONLY
|
|
NS_METHOD nsTableCellFrame::MoveTo(nscoord aX, nscoord aY)
|
|
{
|
|
if ((aX != mRect.x) || (aY != mRect.y)) {
|
|
mRect.x = aX;
|
|
mRect.y = aY;
|
|
|
|
nsIView* view;
|
|
GetView(view);
|
|
|
|
// Let the view know
|
|
if (nsnull != view) {
|
|
// Position view relative to it's parent, not relative to our
|
|
// parent frame (our parent frame may not have a view).
|
|
nsIView* parentWithView;
|
|
nsPoint origin;
|
|
GetOffsetFromView(origin, parentWithView);
|
|
view->SetPosition(origin.x, origin.y);
|
|
NS_IF_RELEASE(parentWithView);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_METHOD nsTableCellFrame::SizeTo(nscoord aWidth, nscoord aHeight)
|
|
{
|
|
mRect.width = aWidth;
|
|
mRect.height = aHeight;
|
|
|
|
nsIView* view;
|
|
GetView(view);
|
|
|
|
// Let the view know
|
|
if (nsnull != view) {
|
|
view->SetDimensions(aWidth, aHeight);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|