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386 lines
10 KiB
C++
386 lines
10 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 "nsHTMLReflowCommand.h"
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#include "nsHTMLParts.h"
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#include "nsIFrame.h"
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#include "nsIPresContext.h"
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#include "nsIPresShell.h"
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#include "nsIContent.h"
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsHTMLIIDs.h"
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#include "nsFrame.h"
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#include "nsContainerFrame.h"
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nsresult
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NS_NewHTMLReflowCommand(nsHTMLReflowCommand** aInstancePtrResult,
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nsIFrame* aTargetFrame,
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nsReflowType aReflowType,
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nsIFrame* aChildFrame,
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nsIAtom* aAttribute)
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{
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NS_ASSERTION(aInstancePtrResult,
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"null result passed to NS_NewHTMLReflowCommand");
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*aInstancePtrResult = new nsHTMLReflowCommand(aTargetFrame, aReflowType,
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aChildFrame, aAttribute);
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if (!*aInstancePtrResult) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return NS_OK;
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}
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#ifdef DEBUG_jesup
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PRInt32 gReflows;
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PRInt32 gReflowsInUse;
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PRInt32 gReflowsInUseMax;
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PRInt32 gReflowsZero;
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PRInt32 gReflowsAuto;
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PRInt32 gReflowsLarger;
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PRInt32 gReflowsMaxZero;
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PRInt32 gReflowsMaxAuto;
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PRInt32 gReflowsMaxLarger;
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class mPathStats {
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public:
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mPathStats();
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~mPathStats();
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};
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mPathStats::mPathStats()
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{
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}
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mPathStats::~mPathStats()
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{
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printf("nsHTMLReflowCommand->mPath stats:\n");
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printf("\tNumber created: %d\n",gReflows);
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printf("\tNumber in-use: %d\n",gReflowsInUseMax);
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printf("\tNumber size == 0: %d\n",gReflowsZero);
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printf("\tNumber size <= 8: %d\n",gReflowsAuto);
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printf("\tNumber size > 8: %d\n",gReflowsLarger);
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printf("\tNum max size == 0: %d\n",gReflowsMaxZero);
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printf("\tNum max size <= 8: %d\n",gReflowsMaxAuto);
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printf("\tNum max size > 8: %d\n",gReflowsMaxLarger);
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}
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// Just so constructor/destructor's get called
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mPathStats gmPathStats;
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#endif
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// Construct a reflow command given a target frame, reflow command type,
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// and optional child frame
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nsHTMLReflowCommand::nsHTMLReflowCommand(nsIFrame* aTargetFrame,
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nsReflowType aReflowType,
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nsIFrame* aChildFrame,
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nsIAtom* aAttribute)
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: mType(aReflowType), mTargetFrame(aTargetFrame), mChildFrame(aChildFrame),
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mPrevSiblingFrame(nsnull),
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mAttribute(aAttribute),
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mListName(nsnull),
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mFlags(0)
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{
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MOZ_COUNT_CTOR(nsHTMLReflowCommand);
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NS_PRECONDITION(mTargetFrame != nsnull, "null target frame");
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if (nsnull!=mAttribute)
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NS_ADDREF(mAttribute);
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#ifdef DEBUG_jesup
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gReflows++;
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gReflowsInUse++;
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if (gReflowsInUse > gReflowsInUseMax)
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gReflowsInUseMax = gReflowsInUse;
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#endif
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}
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nsHTMLReflowCommand::~nsHTMLReflowCommand()
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{
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MOZ_COUNT_DTOR(nsHTMLReflowCommand);
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#ifdef DEBUG_jesup
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if (mPath.GetArraySize() == 0)
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gReflowsMaxZero++;
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else if (mPath.GetArraySize() <= 8)
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gReflowsMaxAuto++;
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else
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gReflowsMaxLarger++;
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gReflowsInUse--;
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#endif
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NS_IF_RELEASE(mAttribute);
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NS_IF_RELEASE(mListName);
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}
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nsIFrame* nsHTMLReflowCommand::GetContainingBlock(nsIFrame* aFloater) const
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{
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nsIFrame* containingBlock;
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aFloater->GetParent(&containingBlock);
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return containingBlock;
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}
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void nsHTMLReflowCommand::BuildPath()
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{
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#ifdef DEBUG_jesup
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if (mPath.Count() == 0)
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gReflowsZero++;
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else if (mPath.Count() <= 8)
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gReflowsAuto++;
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else
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gReflowsLarger++;
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#endif
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mPath.Clear();
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// Floating frames are handled differently. The path goes from the target
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// frame to the containing block, and then up the hierarchy
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const nsStyleDisplay* display;
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mTargetFrame->GetStyleData(eStyleStruct_Display, (const nsStyleStruct*&)display);
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if (NS_STYLE_FLOAT_NONE != display->mFloats) {
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mPath.AppendElement((void*)mTargetFrame);
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for (nsIFrame* f = GetContainingBlock(mTargetFrame); nsnull != f; f->GetParent(&f)) {
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mPath.AppendElement((void*)f);
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}
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} else {
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for (nsIFrame* f = mTargetFrame; nsnull != f; f->GetParent(&f)) {
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mPath.AppendElement((void*)f);
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}
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}
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}
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nsresult
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nsHTMLReflowCommand::Dispatch(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsSize& aMaxSize,
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nsIRenderingContext& aRendContext)
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{
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// Build the path from the target frame (index 0) to the root frame
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BuildPath();
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// Send an incremental reflow notification to the root frame
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nsIFrame* root = (nsIFrame*)mPath[mPath.Count() - 1];
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#ifdef NS_DEBUG
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nsCOMPtr<nsIPresShell> shell;
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aPresContext->GetShell(getter_AddRefs(shell));
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if (shell) {
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nsIFrame* rootFrame;
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shell->GetRootFrame(&rootFrame);
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NS_ASSERTION(rootFrame == root, "bad root frame");
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}
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#endif
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if (nsnull != root) {
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mPath.RemoveElementAt(mPath.Count() - 1);
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nsHTMLReflowState reflowState(aPresContext, root, *this,
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&aRendContext, aMaxSize);
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nsReflowStatus status;
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root->WillReflow(aPresContext);
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nsContainerFrame::PositionFrameView(aPresContext, root);
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root->Reflow(aPresContext, aDesiredSize, reflowState, status);
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root->SizeTo(aPresContext, aDesiredSize.width, aDesiredSize.height);
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nsIView* view;
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root->GetView(aPresContext, &view);
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if (view) {
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nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, root, view,
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nsnull);
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}
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root->DidReflow(aPresContext, nsnull, NS_FRAME_REFLOW_FINISHED);
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}
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::GetNext(nsIFrame*& aNextFrame, PRBool aRemove)
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{
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PRInt32 count = mPath.Count();
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aNextFrame = nsnull;
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if (count > 0) {
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aNextFrame = (nsIFrame*)mPath[count - 1];
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if (aRemove) {
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mPath.RemoveElementAt(count - 1);
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}
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}
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::GetTarget(nsIFrame*& aTargetFrame) const
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{
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aTargetFrame = mTargetFrame;
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::SetTarget(nsIFrame* aTargetFrame)
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{
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mTargetFrame = aTargetFrame;
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::GetType(nsReflowType& aReflowType) const
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{
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aReflowType = mType;
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::GetAttribute(nsIAtom *& aAttribute) const
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{
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aAttribute = mAttribute;
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if (nsnull!=aAttribute)
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NS_ADDREF(aAttribute);
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::GetChildFrame(nsIFrame*& aChildFrame) const
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{
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aChildFrame = mChildFrame;
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::GetChildListName(nsIAtom*& aListName) const
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{
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aListName = mListName;
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NS_IF_ADDREF(aListName);
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::SetChildListName(nsIAtom* aListName)
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{
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mListName = aListName;
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NS_IF_ADDREF(mListName);
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::GetPrevSiblingFrame(nsIFrame*& aSiblingFrame) const
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{
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aSiblingFrame = mPrevSiblingFrame;
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::List(FILE* out) const
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{
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#ifdef DEBUG
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static const char* kReflowCommandType[] = {
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"ContentChanged",
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"StyleChanged",
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"ReflowDirty",
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"UserDefined",
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};
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fprintf(out, "ReflowCommand@%p[%s]:",
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this, kReflowCommandType[mType]);
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if (mTargetFrame) {
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fprintf(out, " target=");
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nsFrame::ListTag(out, mTargetFrame);
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}
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if (mChildFrame) {
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fprintf(out, " child=");
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nsFrame::ListTag(out, mChildFrame);
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}
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if (mPrevSiblingFrame) {
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fprintf(out, " prevSibling=");
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nsFrame::ListTag(out, mPrevSiblingFrame);
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}
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if (mAttribute) {
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fprintf(out, " attr=");
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nsAutoString attr;
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mAttribute->ToString(attr);
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fputs(NS_LossyConvertUCS2toASCII(attr).get(), out);
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}
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if (mListName) {
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fprintf(out, " list=");
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nsAutoString attr;
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mListName->ToString(attr);
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fputs(NS_LossyConvertUCS2toASCII(attr).get(), out);
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}
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fprintf(out, "\n");
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// Show the path, but without using mPath which is in an undefined
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// state at this point.
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if (mTargetFrame) {
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// Floating frames are handled differently. The path goes from the target
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// frame to the containing block, and then up the hierarchy
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PRBool didOne = PR_FALSE;
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nsIFrame* start = mTargetFrame;
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const nsStyleDisplay* display;
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mTargetFrame->GetStyleData(eStyleStruct_Display,
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(const nsStyleStruct*&) display);
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if (NS_STYLE_FLOAT_NONE != display->mFloats) {
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start = GetContainingBlock(mTargetFrame);
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}
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for (nsIFrame* f = start; nsnull != f; f->GetParent(&f)) {
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if (f != mTargetFrame) {
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fprintf(out, " ");
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nsFrame::ListTag(out, f);
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didOne = PR_TRUE;
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}
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}
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if (didOne) {
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fprintf(out, "\n");
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}
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}
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#endif
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::GetFlags(PRInt32* aFlags)
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{
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*aFlags = mFlags;
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return NS_OK;
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}
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nsresult
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nsHTMLReflowCommand::SetFlags(PRInt32 aFlags)
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{
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mFlags = aFlags;
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return NS_OK;
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}
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