зеркало из https://github.com/mozilla/gecko-dev.git
120 строки
4.5 KiB
C++
120 строки
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCOMPtr.h"
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#include "nsLeafFrame.h"
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#include "nsHTMLContainerFrame.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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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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nsFramePaintLayer aWhichLayer,
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PRUint32 aFlags)
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{
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if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
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PaintSelf(aPresContext, aRenderingContext, aDirtyRect);
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}
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DO_GLOBAL_REFLOW_COUNT_DSP("nsLeafFrame", &aRenderingContext);
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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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DO_GLOBAL_REFLOW_COUNT("nsLeafFrame", aReflowState.reason);
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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.availableWidth, aReflowState.availableHeight));
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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 (aMetrics.mComputeMEW) {
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aMetrics.mMaxElementWidth = aMetrics.width;
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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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NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics);
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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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aBorderPadding = aReflowState.mComputedBorderPadding;
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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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nsCOMPtr<nsIPresShell> shell;
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aPresContext->GetShell(getter_AddRefs(shell));
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mState |= NS_FRAME_IS_DIRTY;
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return mParent->ReflowDirtyChild(shell, this);
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}
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