912 lines
21 KiB
C++
912 lines
21 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Pierre Phaneuf <pp@ludusdesign.com>
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*/
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#include "nsLineBox.h"
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#include "nsISpaceManager.h"
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#include "nsIStyleContext.h"
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#include "nsLineLayout.h"
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#include "prprf.h"
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#ifdef DEBUG
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#include "nsISizeOfHandler.h"
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#include "nsLayoutAtoms.h"
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#endif
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#ifdef DEBUG
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static PRInt32 ctorCount;
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PRInt32 nsLineBox::GetCtorCount() { return ctorCount; }
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#endif
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MOZ_DECL_CTOR_COUNTER(nsLineBox);
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nsLineBox::nsLineBox(nsIFrame* aFrame, PRInt32 aCount, PRBool aIsBlock)
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: mFirstChild(aFrame),
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mNext(nsnull),
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mBounds(0, 0, 0, 0),
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mMaxElementWidth(0),
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mData(nsnull),
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mMaximumWidth(-1)
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{
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MOZ_COUNT_CTOR(nsLineBox);
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#ifdef DEBUG
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++ctorCount;
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#endif
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mAllFlags = 0;
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#if NS_STYLE_CLEAR_NONE > 0
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mFlags.mBreakType = NS_STYLE_CLEAR_NONE;
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#endif
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SetChildCount(aCount);
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MarkDirty();
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mFlags.mBlock = aIsBlock;
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}
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nsLineBox::~nsLineBox()
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{
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MOZ_COUNT_DTOR(nsLineBox);
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Cleanup();
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}
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nsLineBox*
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NS_NewLineBox(nsIPresShell* aPresShell, nsIFrame* aFrame,
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PRInt32 aCount, PRBool aIsBlock)
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{
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return new (aPresShell)nsLineBox(aFrame, aCount, aIsBlock);
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}
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// Overloaded new operator. Uses an arena (which comes from the presShell)
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// to perform the allocation.
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void*
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nsLineBox::operator new(size_t sz, nsIPresShell* aPresShell)
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{
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void* result = nsnull;
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aPresShell->AllocateFrame(sz, &result);
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return result;
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}
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// Overloaded delete operator. Doesn't actually free the memory, because we
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// use an arena
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void
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nsLineBox::operator delete(void* aPtr, size_t sz)
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{
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}
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void
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nsLineBox::Destroy(nsIPresShell* aPresShell)
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{
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// Destroy the object. This won't actually free the memory, though
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delete this;
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// Have the pres shell recycle the memory
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aPresShell->FreeFrame(sizeof(*this), (void*)this);
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}
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void
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nsLineBox::Cleanup()
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{
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if (mData) {
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if (IsBlock()) {
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delete mBlockData;
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}
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else {
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delete mInlineData;
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}
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mData = nsnull;
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}
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}
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#ifdef DEBUG
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static void
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ListFloaters(FILE* out, PRInt32 aIndent, const nsFloaterCacheList& aFloaters)
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{
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nsAutoString frameName;
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nsFloaterCache* fc = aFloaters.Head();
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while (fc) {
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nsFrame::IndentBy(out, aIndent);
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nsPlaceholderFrame* ph = fc->mPlaceholder;
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if (nsnull != ph) {
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fprintf(out, "placeholder@%p ", ph);
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nsIFrame* frame = ph->GetOutOfFlowFrame();
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if (nsnull != frame) {
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nsIFrameDebug* frameDebug;
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if (NS_SUCCEEDED(frame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) {
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frameDebug->GetFrameName(frameName);
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fputs(frameName, out);
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}
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}
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fprintf(out, " %s region={%d,%d,%d,%d} combinedArea={%d,%d,%d,%d}",
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fc->mIsCurrentLineFloater ? "cl" : "bcl",
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fc->mRegion.x, fc->mRegion.y,
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fc->mRegion.width, fc->mRegion.height,
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fc->mCombinedArea.x, fc->mCombinedArea.y,
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fc->mCombinedArea.width, fc->mCombinedArea.height);
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fprintf(out, "\n");
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}
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fc = fc->Next();
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}
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}
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#endif
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char*
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nsLineBox::StateToString(char* aBuf, PRInt32 aBufSize) const
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{
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PR_snprintf(aBuf, aBufSize, "%s,%s,%s,%s[0x%x]",
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IsBlock() ? "block" : "inline",
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IsDirty() ? "dirty" : "",
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IsImpactedByFloater() ? "impacted" : "",
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IsTrimmed() ? "trimmed" : "",
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mAllFlags);
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return aBuf;
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}
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#ifdef DEBUG
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void
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nsLineBox::List(nsIPresContext* aPresContext, FILE* out, PRInt32 aIndent) const
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{
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PRInt32 i;
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for (i = aIndent; --i >= 0; ) fputs(" ", out);
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char cbuf[100];
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fprintf(out, "line %p: count=%d state=%s ",
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this, GetChildCount(), StateToString(cbuf, sizeof(cbuf)));
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if (0 != GetCarriedOutBottomMargin()) {
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fprintf(out, "bm=%d ", GetCarriedOutBottomMargin());
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}
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if (0 != mMaxElementWidth) {
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fprintf(out, "mew=%d ", mMaxElementWidth);
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}
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fprintf(out, "{%d,%d,%d,%d} ",
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mBounds.x, mBounds.y, mBounds.width, mBounds.height);
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if (mData) {
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fprintf(out, "ca={%d,%d,%d,%d} ",
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mData->mCombinedArea.x, mData->mCombinedArea.y,
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mData->mCombinedArea.width, mData->mCombinedArea.height);
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}
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fprintf(out, "<\n");
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nsIFrame* frame = mFirstChild;
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PRInt32 n = GetChildCount();
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while (--n >= 0) {
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nsIFrameDebug* frameDebug;
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if (NS_SUCCEEDED(frame->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**)&frameDebug))) {
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frameDebug->List(aPresContext, out, aIndent + 1);
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}
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frame->GetNextSibling(&frame);
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}
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for (i = aIndent; --i >= 0; ) fputs(" ", out);
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if (HasFloaters()) {
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fputs("> floaters <\n", out);
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ListFloaters(out, aIndent + 1, mInlineData->mFloaters);
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for (i = aIndent; --i >= 0; ) fputs(" ", out);
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}
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fputs(">\n", out);
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}
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#endif
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nsIFrame*
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nsLineBox::LastChild() const
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{
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nsIFrame* frame = mFirstChild;
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PRInt32 n = GetChildCount() - 1;
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while (--n >= 0) {
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frame->GetNextSibling(&frame);
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}
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return frame;
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}
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PRBool
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nsLineBox::IsLastChild(nsIFrame* aFrame) const
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{
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nsIFrame* lastFrame = LastChild();
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return aFrame == lastFrame;
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}
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PRInt32
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nsLineBox::IndexOf(nsIFrame* aFrame) const
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{
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PRInt32 i, n = GetChildCount();
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nsIFrame* frame = mFirstChild;
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for (i = 0; i < n; i++) {
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if (frame == aFrame) {
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return i;
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}
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frame->GetNextSibling(&frame);
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}
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return -1;
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}
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void
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nsLineBox::DeleteLineList(nsIPresContext* aPresContext, nsLineBox* aLine)
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{
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if (nsnull != aLine) {
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// Delete our child frames before doing anything else. In particular
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// we do all of this before our base class releases it's hold on the
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// view.
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for (nsIFrame* child = aLine->mFirstChild; child; ) {
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nsIFrame* nextChild;
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child->GetNextSibling(&nextChild);
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child->Destroy(aPresContext);
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child = nextChild;
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}
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while (nsnull != aLine) {
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nsLineBox* next = aLine->mNext;
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delete aLine;
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aLine = next;
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}
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}
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}
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nsLineBox*
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nsLineBox::LastLine(nsLineBox* aLine)
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{
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if (nsnull != aLine) {
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while (nsnull != aLine->mNext) {
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aLine = aLine->mNext;
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}
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}
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return aLine;
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}
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nsLineBox*
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nsLineBox::FindLineContaining(nsLineBox* aLine, nsIFrame* aFrame,
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PRInt32* aFrameIndexInLine)
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{
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NS_PRECONDITION(aFrameIndexInLine && aLine && aFrame, "null ptr");
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while (nsnull != aLine) {
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PRInt32 ix = aLine->IndexOf(aFrame);
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if (ix >= 0) {
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*aFrameIndexInLine = ix;
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return aLine;
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}
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aLine = aLine->mNext;
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}
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*aFrameIndexInLine = -1;
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return nsnull;
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}
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nscoord
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nsLineBox::GetCarriedOutBottomMargin() const
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{
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return (IsBlock() && mBlockData) ? mBlockData->mCarriedOutBottomMargin : 0;
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}
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void
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nsLineBox::SetCarriedOutBottomMargin(nscoord aValue)
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{
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if (IsBlock()) {
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if (aValue) {
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if (!mBlockData) {
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mBlockData = new ExtraBlockData(mBounds);
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}
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if (mBlockData) {
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mBlockData->mCarriedOutBottomMargin = aValue;
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}
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}
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else if (mBlockData) {
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mBlockData->mCarriedOutBottomMargin = aValue;
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MaybeFreeData();
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}
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}
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}
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void
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nsLineBox::MaybeFreeData()
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{
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if (mData && (mData->mCombinedArea == mBounds)) {
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if (IsInline()) {
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if (mInlineData->mFloaters.IsEmpty()) {
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delete mInlineData;
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mInlineData = nsnull;
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}
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}
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else if (0 == mBlockData->mCarriedOutBottomMargin) {
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delete mBlockData;
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mBlockData = nsnull;
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}
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}
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}
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// XXX get rid of this???
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nsFloaterCache*
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nsLineBox::GetFirstFloater()
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{
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NS_ABORT_IF_FALSE(IsInline(), "block line can't have floaters");
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return mInlineData ? mInlineData->mFloaters.Head() : nsnull;
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}
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// XXX this might be too eager to free memory
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void
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nsLineBox::FreeFloaters(nsFloaterCacheFreeList& aFreeList)
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{
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NS_ABORT_IF_FALSE(IsInline(), "block line can't have floaters");
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if (IsInline()) {
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if (mInlineData) {
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aFreeList.Append(mInlineData->mFloaters);
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MaybeFreeData();
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}
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}
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}
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void
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nsLineBox::RemoveFloatersFromSpaceManager(nsISpaceManager* aSpaceManager)
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{
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if (IsInline()) {
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if (mInlineData) {
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nsFloaterCache* floaterCache = mInlineData->mFloaters.Head();
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while (floaterCache) {
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nsIFrame* floater = floaterCache->mPlaceholder->GetOutOfFlowFrame();
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aSpaceManager->RemoveRegion(floater);
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floaterCache = floaterCache->Next();
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}
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}
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}
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}
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void
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nsLineBox::AppendFloaters(nsFloaterCacheFreeList& aFreeList)
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{
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NS_ABORT_IF_FALSE(IsInline(), "block line can't have floaters");
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if (IsInline()) {
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if (aFreeList.NotEmpty()) {
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if (!mInlineData) {
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mInlineData = new ExtraInlineData(mBounds);
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}
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if (mInlineData) {
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mInlineData->mFloaters.Append(aFreeList);
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}
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}
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}
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}
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PRBool
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nsLineBox::RemoveFloater(nsIFrame* aFrame)
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{
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NS_ABORT_IF_FALSE(IsInline(), "block line can't have floaters");
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if (IsInline() && mInlineData) {
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nsFloaterCache* fc = mInlineData->mFloaters.Find(aFrame);
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if (fc) {
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// Note: the placeholder is part of the line's child list
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// and will be removed later.
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fc->mPlaceholder->SetOutOfFlowFrame(nsnull);
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mInlineData->mFloaters.Remove(fc);
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MaybeFreeData();
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return PR_TRUE;
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}
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}
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return PR_FALSE;
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}
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void
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nsLineBox::SetCombinedArea(const nsRect& aCombinedArea)
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{
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NS_ASSERTION(aCombinedArea.width >= 0, "illegal width for combined area");
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NS_ASSERTION(aCombinedArea.height >= 0, "illegal height for combined area");
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if (aCombinedArea != mBounds) {
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if (mData) {
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mData->mCombinedArea = aCombinedArea;
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}
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else {
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if (IsInline()) {
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mInlineData = new ExtraInlineData(aCombinedArea);
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}
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else {
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mBlockData = new ExtraBlockData(aCombinedArea);
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}
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}
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}
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else {
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if (mData) {
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// Store away new value so that MaybeFreeData compares against
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// the right value.
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mData->mCombinedArea = aCombinedArea;
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}
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MaybeFreeData();
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}
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}
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void
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nsLineBox::GetCombinedArea(nsRect* aResult)
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{
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if (aResult) {
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*aResult = mData ? mData->mCombinedArea : mBounds;
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}
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}
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#ifdef DEBUG
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PRInt32
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nsLineBox::ListLength(nsLineBox* aLine)
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{
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PRInt32 count = 0;
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while (aLine) {
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count++;
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aLine = aLine->mNext;
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}
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return count;
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}
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nsIAtom*
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nsLineBox::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
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{
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NS_PRECONDITION(aResult, "null OUT parameter pointer");
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*aResult = sizeof(*this);
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nsIAtom* atom;
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if (IsBlock()) {
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atom = nsLayoutAtoms::lineBoxBlockSmall;
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if (mBlockData) {
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atom = nsLayoutAtoms::lineBoxBlockBig;
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*aResult += sizeof(*mBlockData);
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}
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}
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else {
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atom = nsLayoutAtoms::lineBoxSmall;
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if (mInlineData) {
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atom = nsLayoutAtoms::lineBoxBig;
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*aResult += sizeof(*mInlineData);
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// Add in the size needed for floaters associated with this line
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if (HasFloaters()) {
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PRUint32 floatersSize;
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mInlineData->mFloaters.SizeOf(aHandler, &floatersSize);
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// Base size of embedded object was included in sizeof(*this) above
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floatersSize -= sizeof(mInlineData->mFloaters);
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aHandler->AddSize(nsLayoutAtoms::lineBoxFloaters, floatersSize);
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}
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}
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}
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return atom;
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}
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#endif
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//----------------------------------------------------------------------
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static NS_DEFINE_IID(kILineIteratorIID, NS_ILINE_ITERATOR_IID);
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static nsLineBox* gDummyLines[1];
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nsLineIterator::nsLineIterator()
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{
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NS_INIT_REFCNT();
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mLines = gDummyLines;
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mNumLines = 0;
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mIndex = 0;
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mRightToLeft = PR_FALSE;
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}
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nsLineIterator::~nsLineIterator()
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{
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if (mLines != gDummyLines) {
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delete [] mLines;
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}
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}
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NS_IMPL_ISUPPORTS(nsLineIterator, kILineIteratorIID)
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nsresult
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nsLineIterator::Init(nsLineBox* aLines, PRBool aRightToLeft)
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{
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mRightToLeft = aRightToLeft;
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// Count the lines
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PRInt32 numLines = 0;
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nsLineBox* line = aLines;
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while (line) {
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numLines++;
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line = line->mNext;
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}
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if (0 == numLines) {
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// Use gDummyLines so that we don't need null pointer checks in
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// the accessor methods
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mLines = gDummyLines;
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return NS_OK;
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}
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// Make a linear array of the lines
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mLines = new nsLineBox*[numLines];
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if (!mLines) {
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// Use gDummyLines so that we don't need null pointer checks in
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// the accessor methods
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mLines = gDummyLines;
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return NS_ERROR_OUT_OF_MEMORY;
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}
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nsLineBox** lp = mLines;
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line = aLines;
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while (line) {
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*lp++ = line;
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line = line->mNext;
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}
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mNumLines = numLines;
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return NS_OK;
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}
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NS_IMETHODIMP
|
|
nsLineIterator::GetNumLines(PRInt32* aResult)
|
|
{
|
|
NS_PRECONDITION(aResult, "null OUT ptr");
|
|
if (!aResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
*aResult = mNumLines;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsLineIterator::GetDirection(PRBool* aIsRightToLeft)
|
|
{
|
|
NS_PRECONDITION(aIsRightToLeft, "null OUT ptr");
|
|
if (!aIsRightToLeft) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
*aIsRightToLeft = mRightToLeft;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsLineIterator::GetLine(PRInt32 aLineNumber,
|
|
nsIFrame** aFirstFrameOnLine,
|
|
PRInt32* aNumFramesOnLine,
|
|
nsRect& aLineBounds,
|
|
PRUint32* aLineFlags)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(aFirstFrameOnLine);
|
|
NS_ENSURE_ARG_POINTER(aNumFramesOnLine);
|
|
NS_ENSURE_ARG_POINTER(aLineFlags);
|
|
|
|
if ((aLineNumber < 0) || (aLineNumber >= mNumLines)) {
|
|
*aFirstFrameOnLine = nsnull;
|
|
*aNumFramesOnLine = 0;
|
|
aLineBounds.SetRect(0, 0, 0, 0);
|
|
return NS_OK;
|
|
}
|
|
nsLineBox* line = mLines[aLineNumber];
|
|
*aFirstFrameOnLine = line->mFirstChild;
|
|
*aNumFramesOnLine = line->GetChildCount();
|
|
aLineBounds = line->mBounds;
|
|
|
|
PRUint32 flags = 0;
|
|
if (line->IsBlock()) {
|
|
flags |= NS_LINE_FLAG_IS_BLOCK;
|
|
}
|
|
else {
|
|
if (line->IsTrimmed())
|
|
flags |= NS_LINE_FLAG_IS_TRIMMED;
|
|
if (line->HasBreak())
|
|
flags |= NS_LINE_FLAG_ENDS_IN_BREAK;
|
|
}
|
|
*aLineFlags = flags;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsLineIterator::FindLineContaining(nsIFrame* aFrame,
|
|
PRInt32* aLineNumberResult)
|
|
{
|
|
nsLineBox* line = mLines[0];
|
|
PRInt32 lineNumber = 0;
|
|
while (line) {
|
|
if (line->Contains(aFrame)) {
|
|
*aLineNumberResult = lineNumber;
|
|
return NS_OK;
|
|
}
|
|
line = line->mNext;
|
|
lineNumber++;
|
|
}
|
|
*aLineNumberResult = -1;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsLineIterator::FindLineAt(nscoord aY,
|
|
PRInt32* aLineNumberResult)
|
|
{
|
|
nsLineBox* line = mLines[0];
|
|
if (!line || (aY < line->mBounds.y)) {
|
|
*aLineNumberResult = -1;
|
|
return NS_OK;
|
|
}
|
|
PRInt32 lineNumber = 0;
|
|
while (line) {
|
|
if ((aY >= line->mBounds.y) && (aY < line->mBounds.YMost())) {
|
|
*aLineNumberResult = lineNumber;
|
|
return NS_OK;
|
|
}
|
|
line = line->mNext;
|
|
lineNumber++;
|
|
}
|
|
*aLineNumberResult = mNumLines;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsLineIterator::FindFrameAt(PRInt32 aLineNumber,
|
|
nscoord aX,
|
|
nsIFrame** aFrameFound,
|
|
PRBool* aXIsBeforeFirstFrame,
|
|
PRBool* aXIsAfterLastFrame)
|
|
{
|
|
NS_PRECONDITION(aFrameFound && aXIsBeforeFirstFrame && aXIsAfterLastFrame,
|
|
"null OUT ptr");
|
|
if (!aFrameFound || !aXIsBeforeFirstFrame || !aXIsAfterLastFrame) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
if ((aLineNumber < 0) || (aLineNumber >= mNumLines)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
nsLineBox* line = mLines[aLineNumber];
|
|
if (!line) {
|
|
*aFrameFound = nsnull;
|
|
*aXIsBeforeFirstFrame = PR_TRUE;
|
|
*aXIsAfterLastFrame = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
|
|
if (aX < line->mBounds.x) {
|
|
nsIFrame* frame;
|
|
if (mRightToLeft) {
|
|
frame = line->LastChild();
|
|
}
|
|
else {
|
|
frame = line->mFirstChild;
|
|
}
|
|
*aFrameFound = frame;
|
|
*aXIsBeforeFirstFrame = PR_TRUE;
|
|
*aXIsAfterLastFrame = PR_FALSE;
|
|
return NS_OK;
|
|
}
|
|
else if (aX >= line->mBounds.XMost()) {
|
|
nsIFrame* frame;
|
|
if (mRightToLeft) {
|
|
frame = line->mFirstChild;
|
|
}
|
|
else {
|
|
frame = line->LastChild();
|
|
}
|
|
*aFrameFound = frame;
|
|
*aXIsBeforeFirstFrame = PR_FALSE;
|
|
*aXIsAfterLastFrame = PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
|
|
// Find the frame closest to the X coordinate. Gaps can occur
|
|
// between frames (because of margins) so we split the gap in two
|
|
// when checking.
|
|
*aXIsBeforeFirstFrame = PR_FALSE;
|
|
*aXIsAfterLastFrame = PR_FALSE;
|
|
nsRect r1, r2;
|
|
nsIFrame* frame = line->mFirstChild;
|
|
PRInt32 n = line->GetChildCount();
|
|
if (mRightToLeft) {
|
|
while (--n >= 0) {
|
|
nsIFrame* nextFrame;
|
|
frame->GetNextSibling(&nextFrame);
|
|
frame->GetRect(r1);
|
|
if (aX > r1.x) {
|
|
break;
|
|
}
|
|
if (nextFrame) {
|
|
nextFrame->GetRect(r2);
|
|
if (aX > r2.XMost()) {
|
|
nscoord rightEdge = r2.XMost();
|
|
nscoord delta = r1.x - rightEdge;
|
|
if (aX < rightEdge + delta/2) {
|
|
frame = nextFrame;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
*aXIsBeforeFirstFrame = PR_TRUE;
|
|
}
|
|
frame = nextFrame;
|
|
}
|
|
}
|
|
else {
|
|
while (--n >= 0) {
|
|
nsIFrame* nextFrame;
|
|
frame->GetNextSibling(&nextFrame);
|
|
frame->GetRect(r1);
|
|
if (aX < r1.XMost()) {
|
|
break;
|
|
}
|
|
if (nextFrame) {
|
|
nextFrame->GetRect(r2);
|
|
if (aX < r2.x) {
|
|
nscoord rightEdge = r1.XMost();
|
|
nscoord delta = r2.x - rightEdge;
|
|
if (aX >= rightEdge + delta/2) {
|
|
frame = nextFrame;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
*aXIsAfterLastFrame = PR_TRUE;
|
|
}
|
|
frame = nextFrame;
|
|
}
|
|
}
|
|
|
|
*aFrameFound = frame;
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
nsFloaterCacheList::~nsFloaterCacheList()
|
|
{
|
|
nsFloaterCache* floater = mHead;
|
|
while (floater) {
|
|
nsFloaterCache* next = floater->mNext;
|
|
delete floater;
|
|
floater = next;
|
|
}
|
|
mHead = nsnull;
|
|
}
|
|
|
|
nsFloaterCache*
|
|
nsFloaterCacheList::Tail() const
|
|
{
|
|
nsFloaterCache* fc = mHead;
|
|
while (fc) {
|
|
if (!fc->mNext) {
|
|
break;
|
|
}
|
|
fc = fc->mNext;
|
|
}
|
|
return fc;
|
|
}
|
|
|
|
void
|
|
nsFloaterCacheList::Append(nsFloaterCacheFreeList& aList)
|
|
{
|
|
nsFloaterCache* tail = Tail();
|
|
if (tail) {
|
|
tail->mNext = aList.mHead;
|
|
}
|
|
else {
|
|
mHead = aList.mHead;
|
|
}
|
|
aList.mHead = nsnull;
|
|
aList.mTail = nsnull;
|
|
}
|
|
|
|
nsFloaterCache*
|
|
nsFloaterCacheList::Find(nsIFrame* aOutOfFlowFrame)
|
|
{
|
|
nsFloaterCache* fc = mHead;
|
|
while (fc) {
|
|
if (fc->mPlaceholder->GetOutOfFlowFrame() == aOutOfFlowFrame) {
|
|
break;
|
|
}
|
|
fc = fc->Next();
|
|
}
|
|
return fc;
|
|
}
|
|
|
|
void
|
|
nsFloaterCacheList::Remove(nsFloaterCache* aElement)
|
|
{
|
|
nsFloaterCache** fcp = &mHead;
|
|
nsFloaterCache* fc;
|
|
while (nsnull != (fc = *fcp)) {
|
|
if (fc == aElement) {
|
|
*fcp = fc->mNext;
|
|
break;
|
|
}
|
|
fcp = &fc->mNext;
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
nsFloaterCacheList::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
|
|
{
|
|
NS_PRECONDITION(aResult, "null OUT parameter pointer");
|
|
*aResult = sizeof(*this);
|
|
|
|
// Add in the space for each floater
|
|
for (nsFloaterCache* cache = Head(); cache; cache = cache->Next()) {
|
|
*aResult += sizeof(*cache);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
void
|
|
nsFloaterCacheFreeList::Append(nsFloaterCacheList& aList)
|
|
{
|
|
if (mTail) {
|
|
mTail->mNext = aList.mHead;
|
|
}
|
|
else {
|
|
mHead = aList.mHead;
|
|
}
|
|
mTail = aList.Tail();
|
|
aList.mHead = nsnull;
|
|
}
|
|
|
|
nsFloaterCache*
|
|
nsFloaterCacheFreeList::Alloc()
|
|
{
|
|
nsFloaterCache* fc = mHead;
|
|
if (mHead) {
|
|
if (mHead == mTail) {
|
|
mHead = mTail = nsnull;
|
|
}
|
|
else {
|
|
mHead = fc->mNext;
|
|
}
|
|
fc->mNext = nsnull;
|
|
}
|
|
else {
|
|
fc = new nsFloaterCache();
|
|
}
|
|
return fc;
|
|
}
|
|
|
|
void
|
|
nsFloaterCacheFreeList::Append(nsFloaterCache* aFloater)
|
|
{
|
|
aFloater->mNext = nsnull;
|
|
if (mTail) {
|
|
mTail->mNext = aFloater;
|
|
mTail = aFloater;
|
|
}
|
|
else {
|
|
mHead = mTail = aFloater;
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
MOZ_DECL_CTOR_COUNTER(nsFloaterCache);
|
|
|
|
nsFloaterCache::nsFloaterCache()
|
|
: mPlaceholder(nsnull),
|
|
mIsCurrentLineFloater(PR_TRUE),
|
|
mMargins(0, 0, 0, 0),
|
|
mOffsets(0, 0, 0, 0),
|
|
mCombinedArea(0, 0, 0, 0),
|
|
mNext(nsnull)
|
|
{
|
|
MOZ_COUNT_CTOR(nsFloaterCache);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
nsFloaterCache::~nsFloaterCache()
|
|
{
|
|
MOZ_COUNT_DTOR(nsFloaterCache);
|
|
}
|
|
#endif
|