зеркало из https://github.com/mozilla/pjs.git
285 строки
10 KiB
C++
285 строки
10 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 "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"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* 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 Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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#ifndef nsInlineFrame_h___
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#define nsInlineFrame_h___
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#include "nsHTMLContainerFrame.h"
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#include "nsAbsoluteContainingBlock.h"
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#include "nsLineLayout.h"
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class nsAnonymousBlockFrame;
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#define nsInlineFrameSuper nsHTMLContainerFrame
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class nsInlineFrame : public nsInlineFrameSuper
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{
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public:
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friend nsresult NS_NewInlineFrame(nsIFrame** aNewFrame);
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// nsISupports overrides
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NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
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// nsIFrame overrides
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NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD AppendFrames(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame);
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NS_IMETHOD DeleteFrame(nsIPresContext& aPresContext);
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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// nsIHTMLReflow overrides
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NS_IMETHOD Reflow(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD FindTextRuns(nsLineLayout& aLineLayout);
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#if XXX_fix_me
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NS_IMETHOD AdjustFrameSize(nscoord aExtraSpace, nscoord& aUsedSpace);
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NS_IMETHOD TrimTrailingWhiteSpace(nsIPresContext& aPresContext,
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nsIRenderingContext& aRC,
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nscoord& aDeltaWidth);
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#endif
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protected:
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// Additional reflow state used during our reflow methods
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struct InlineReflowState {
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nsIFrame* mNextRCFrame;
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nsIFrame* mPrevFrame;
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nsInlineFrame* mNextInFlow;
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};
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// A helper class that knows how to take a list of frames and chop
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// it up into 3 sections.
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struct SectionData {
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SectionData(nsIFrame* aFrameList);
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PRBool SplitFrameList(nsFrameList& aSection1,
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nsFrameList& aSection2,
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nsFrameList& aSection3);
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PRBool HasABlock() const {
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return nsnull != firstBlock;
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}
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nsIFrame* firstBlock;
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nsIFrame* prevFirstBlock;
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nsIFrame* lastBlock;
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nsIFrame* firstFrame;
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nsIFrame* lastFrame;
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};
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nsInlineFrame();
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virtual PRIntn GetSkipSides() const;
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PRBool HaveAnonymousBlock() const {
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return mFrames.NotEmpty()
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? nsLineLayout::TreatFrameAsBlock(mFrames.FirstChild())
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: PR_FALSE;
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}
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static nsIID kInlineFrameCID;
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static PRBool ParentIsInlineFrame(nsIFrame* aFrame, nsIFrame** aParent) {
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void* tmp;
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nsIFrame* parent;
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aFrame->GetParent(&parent);
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*aParent = parent;
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if (NS_SUCCEEDED(parent->QueryInterface(kInlineFrameCID, &tmp))) {
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return PR_TRUE;
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}
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return PR_FALSE;
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}
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nsAnonymousBlockFrame* FindPrevAnonymousBlock(nsInlineFrame** aBlockParent);
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nsAnonymousBlockFrame* FindAnonymousBlock(nsInlineFrame** aBlockParent);
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nsresult CreateAnonymousBlock(nsIPresContext& aPresContext,
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nsIFrame* aFrameList,
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nsIFrame** aResult);
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nsresult AppendFrames(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIFrame* aFrameList,
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PRBool aGenerateReflowCommands);
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nsresult InsertBlockFrames(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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nsresult InsertInlineFrames(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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nsresult ReflowInlineFrames(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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InlineReflowState& rs,
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nsHTMLReflowMetrics& aMetrics,
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nsReflowStatus& aStatus);
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nsresult ReflowInlineFrame(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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InlineReflowState& rs,
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nsIFrame* aFrame,
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nsReflowStatus& aStatus);
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virtual nsIFrame* PullInlineFrame(nsIPresContext* aPresContext,
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InlineReflowState& rs,
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PRBool* aIsComplete);
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virtual void PushFrames(nsIPresContext* aPresContext,
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nsIFrame* aFromChild,
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nsIFrame* aPrevSibling);
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virtual void DrainOverflow(nsIPresContext* aPresContext);
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nsIFrame* PullAnyFrame(nsIPresContext* aPresContext, InlineReflowState& rs);
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nsresult ReflowBlockFrame(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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InlineReflowState& rs,
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nsHTMLReflowMetrics& aMetrics,
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nsReflowStatus& aStatus);
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};
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//----------------------------------------------------------------------
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// Variation on inline-frame used to manage lines for line layout in
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// special situations.
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class nsFirstLineFrame : public nsInlineFrame {
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public:
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friend nsresult NS_NewFirstLineFrame(nsIFrame** aNewFrame);
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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NS_IMETHOD Reflow(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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// AppendFrames/InsertFrames/RemoveFrame are implemented to forward
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// the method call to the parent frame.
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NS_IMETHOD AppendFrames(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame);
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// These methods are used by the parent frame to actually modify the
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// child frames of the line frame. These methods do not generate
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// reflow commands.
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nsresult AppendFrames2(nsIPresContext* aPresContext,
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nsIFrame* aFrameList);
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nsresult InsertFrames2(nsIPresContext* aPresContext,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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nsresult RemoveFrame2(nsIPresContext* aPresContext,
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nsIFrame* aOldFrame);
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void RemoveFramesFrom(nsIFrame* aFrame);
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void RemoveAllFrames() {
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mFrames.SetFrames(nsnull);
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}
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protected:
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nsFirstLineFrame();
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virtual nsIFrame* PullInlineFrame(nsIPresContext* aPresContext,
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InlineReflowState& rs,
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PRBool* aIsComplete);
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virtual void DrainOverflow(nsIPresContext* aPresContext);
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};
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extern nsresult NS_NewFirstLineFrame(nsIFrame** aNewFrame);
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//----------------------------------------------------------------------
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// Derived class created for relatively positioned inline-level elements
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// that acts as a containing block for child absolutely positioned
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// elements
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class nsPositionedInlineFrame : public nsInlineFrame
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{
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public:
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NS_IMETHOD DeleteFrame(nsIPresContext& aPresContext);
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NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD AppendFrames(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame);
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NS_IMETHOD GetAdditionalChildListName(PRInt32 aIndex,
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nsIAtom** aListName) const;
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NS_IMETHOD FirstChild(nsIAtom* aListName, nsIFrame** aFirstChild) const;
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NS_IMETHOD Reflow(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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protected:
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nsAbsoluteContainingBlock mAbsoluteContainer;
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};
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#endif /* nsInlineFrame_h___ */
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