зеркало из https://github.com/mozilla/pjs.git
122 строки
4.3 KiB
C++
122 строки
4.3 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 "nsLeafFrame.h"
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#include "nsHTMLContainerFrame.h"
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#include "nsCSSRendering.h"
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#include "nsHTMLParts.h"
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#include "nsHTMLAtoms.h"
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#include "nsIPresShell.h"
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#include "nsIPresContext.h"
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#include "nsIStyleContext.h"
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nsLeafFrame::~nsLeafFrame()
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{
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}
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NS_IMETHODIMP
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nsLeafFrame::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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nsRect rect(0, 0, mRect.width, mRect.height);
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nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *myColor, 0, 0);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *mySpacing, 0);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsLeafFrame::Reflow(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aMetrics,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
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("enter nsLeafFrame::Reflow: aMaxSize=%d,%d",
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aReflowState.maxSize.width, aReflowState.maxSize.height));
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NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow");
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// XXX add in code to check for width/height being set via css
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// and if set use them instead of calling GetDesiredSize.
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GetDesiredSize(&aPresContext, aReflowState, aMetrics);
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nsMargin borderPadding;
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AddBordersAndPadding(&aPresContext, aReflowState, aMetrics, borderPadding);
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if (nsnull != aMetrics.maxElementSize) {
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aMetrics.maxElementSize->width = aMetrics.width;
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aMetrics.maxElementSize->height = aMetrics.height;
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}
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aStatus = NS_FRAME_COMPLETE;
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NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
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("exit nsLeafFrame::Reflow: size=%d,%d",
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aMetrics.width, aMetrics.height));
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return NS_OK;
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}
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// XXX how should border&padding effect baseline alignment?
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// => descent = borderPadding.bottom for example
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void
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nsLeafFrame::AddBordersAndPadding(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aMetrics,
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nsMargin& aBorderPadding)
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{
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nsHTMLReflowState::ComputeBorderPaddingFor(this,
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aReflowState.parentReflowState,
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aBorderPadding);
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aMetrics.width += aBorderPadding.left + aBorderPadding.right;
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aMetrics.height += aBorderPadding.top + aBorderPadding.bottom;
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aMetrics.ascent = aMetrics.height;
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aMetrics.descent = 0;
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}
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NS_IMETHODIMP
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nsLeafFrame::ContentChanged(nsIPresContext* aPresContext,
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nsIContent* aChild,
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nsISupports* aSubContent)
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{
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// Generate a reflow command with this frame as the target frame
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nsIReflowCommand* cmd;
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nsresult result;
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result = NS_NewHTMLReflowCommand(&cmd, this, nsIReflowCommand::ContentChanged);
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if (NS_OK == result) {
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nsIPresShell* shell = aPresContext->GetShell();
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shell->AppendReflowCommand(cmd);
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NS_RELEASE(shell);
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NS_RELEASE(cmd);
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}
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return result;
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}
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