gecko-dev/layout/generic/nsInlineFrame.h
troy%netscape.com de8e2bfb10 b=32192 r=buster@netscape.com Fixed a place where the code to lazily
set the parent pointer for child frames was missing on case
2000-03-22 04:06:37 +00:00

214 lines
7.5 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsInlineFrame_h___
#define nsInlineFrame_h___
#include "nsHTMLContainerFrame.h"
#include "nsAbsoluteContainingBlock.h"
#include "nsLineLayout.h"
class nsAnonymousBlockFrame;
#define NS_INLINE_FRAME_CID \
{ 0xa6cf90e0, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
#define nsInlineFrameSuper nsHTMLContainerFrame
/**
* Inline frame class.
*
* This class manages a list of child frames that are inline frames. Working with
* nsLineLayout, the class will reflow and place inline frames on a line.
*/
class nsInlineFrame : public nsInlineFrameSuper
{
public:
friend nsresult NS_NewInlineFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
// nsISupports overrides
NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
// nsIFrame overrides
NS_IMETHOD AppendFrames(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aFrameList);
NS_IMETHOD InsertFrames(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsIFrame* aFrameList);
NS_IMETHOD RemoveFrame(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aOldFrame);
NS_IMETHOD ReplaceFrame(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aOldFrame,
nsIFrame* aNewFrame);
NS_IMETHOD ReflowDirtyChild(nsIPresShell* aPresShell, nsIFrame* aChild);
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsString& aResult) const;
#endif
NS_IMETHOD GetFrameType(nsIAtom** aType) const;
// nsIHTMLReflow overrides
NS_IMETHOD Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
NS_IMETHOD FindTextRuns(nsLineLayout& aLineLayout);
static nsIID kInlineFrameCID;
// Take all of the frames away from this frame. The caller is
// presumed to keep them alive.
void StealAllFrames() {
mFrames.SetFrames(nsnull);
}
protected:
// Additional reflow state used during our reflow methods
struct InlineReflowState {
nsIFrame* mNextRCFrame;
nsIFrame* mPrevFrame;
nsInlineFrame* mNextInFlow;
PRBool mSetParentPointer; // when reflowing child frame first set its
// parent frame pointer
InlineReflowState() {
mNextRCFrame = nsnull;
mPrevFrame = nsnull;
mNextInFlow = nsnull;
mSetParentPointer = PR_FALSE;
};
};
nsInlineFrame();
virtual PRIntn GetSkipSides() const;
nsresult ReflowFrames(nsIPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
InlineReflowState& rs,
nsHTMLReflowMetrics& aMetrics,
nsReflowStatus& aStatus);
nsresult ReflowInlineFrame(nsIPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
InlineReflowState& rs,
nsIFrame* aFrame,
nsReflowStatus& aStatus);
virtual nsIFrame* PullOneFrame(nsIPresContext* aPresContext,
InlineReflowState& rs,
PRBool* aIsComplete);
virtual void PushFrames(nsIPresContext* aPresContext,
nsIFrame* aFromChild,
nsIFrame* aPrevSibling);
};
//----------------------------------------------------------------------
/**
* Variation on inline-frame used to manage lines for line layout in
* special situations (:first-line style in particular).
*/
class nsFirstLineFrame : public nsInlineFrame {
public:
friend nsresult NS_NewFirstLineFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsString& aResult) const;
#endif
NS_IMETHOD GetFrameType(nsIAtom** aType) const;
NS_IMETHOD Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
// Take frames starting at aFrame until the end of the frame-list
// away from this frame. The caller is presumed to keep them alive.
void StealFramesFrom(nsIFrame* aFrame);
protected:
nsFirstLineFrame();
virtual nsIFrame* PullOneFrame(nsIPresContext* aPresContext,
InlineReflowState& rs,
PRBool* aIsComplete);
};
//----------------------------------------------------------------------
// Derived class created for relatively positioned inline-level elements
// that acts as a containing block for child absolutely positioned
// elements
class nsPositionedInlineFrame : public nsInlineFrame
{
public:
NS_IMETHOD Destroy(nsIPresContext* aPresContext);
#ifdef DEBUG
NS_IMETHOD SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
#endif
NS_IMETHOD SetInitialChildList(nsIPresContext* aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList);
NS_IMETHOD AppendFrames(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aFrameList);
NS_IMETHOD InsertFrames(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsIFrame* aFrameList);
NS_IMETHOD RemoveFrame(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aOldFrame);
NS_IMETHOD GetAdditionalChildListName(PRInt32 aIndex,
nsIAtom** aListName) const;
NS_IMETHOD FirstChild(nsIPresContext* aPresContext,
nsIAtom* aListName,
nsIFrame** aFirstChild) const;
NS_IMETHOD Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
NS_IMETHOD GetFrameType(nsIAtom** aType) const;
protected:
nsAbsoluteContainingBlock mAbsoluteContainer;
};
#endif /* nsInlineFrame_h___ */