зеркало из https://github.com/mozilla/gecko-dev.git
291 строка
11 KiB
C++
291 строка
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla 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/MPL/
|
|
*
|
|
* 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 the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/* rendering object for CSS display:inline objects */
|
|
|
|
#ifndef nsInlineFrame_h___
|
|
#define nsInlineFrame_h___
|
|
|
|
#include "nsHTMLContainerFrame.h"
|
|
#include "nsAbsoluteContainingBlock.h"
|
|
#include "nsLineLayout.h"
|
|
|
|
class nsAnonymousBlockFrame;
|
|
|
|
#define nsInlineFrameSuper nsHTMLContainerFrame
|
|
|
|
// NS_INLINE_FRAME_HARD_TEXT_OFFSETS is used for access keys, where what
|
|
// would normally be 1 text frame is split into 3 sets of an inline parent
|
|
// and text child (the pre access key text, the underlined key text, and
|
|
// the post access key text). The offsets of the 3 text frame children
|
|
// are set in nsCSSFrameConstructor
|
|
|
|
#define NS_INLINE_FRAME_HARD_TEXT_OFFSETS 0x00100000
|
|
|
|
/** In Bidi left (or right) margin/padding/border should be applied to left
|
|
* (or right) most frame (or a continuation frame).
|
|
* This state value shows if this frame is left (or right) most continuation
|
|
* or not.
|
|
*/
|
|
#define NS_INLINE_FRAME_BIDI_VISUAL_STATE_IS_SET 0x00200000
|
|
|
|
#define NS_INLINE_FRAME_BIDI_VISUAL_IS_LEFT_MOST 0x00400000
|
|
|
|
#define NS_INLINE_FRAME_BIDI_VISUAL_IS_RIGHT_MOST 0x00800000
|
|
|
|
/**
|
|
* 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:
|
|
NS_DECLARE_FRAME_ACCESSOR(nsInlineFrame)
|
|
NS_DECL_QUERYFRAME
|
|
|
|
friend nsIFrame* NS_NewInlineFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
|
|
|
|
// nsIFrame overrides
|
|
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists);
|
|
|
|
#ifdef ACCESSIBILITY
|
|
NS_IMETHODIMP GetAccessible(nsIAccessible** aAccessible);
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHOD GetFrameName(nsAString& aResult) const;
|
|
#endif
|
|
virtual nsIAtom* GetType() const;
|
|
|
|
virtual PRBool IsFrameOfType(PRUint32 aFlags) const
|
|
{
|
|
return nsInlineFrameSuper::IsFrameOfType(aFlags &
|
|
~(nsIFrame::eBidiInlineContainer | nsIFrame::eLineParticipant));
|
|
}
|
|
|
|
virtual PRBool IsEmpty();
|
|
virtual PRBool IsSelfEmpty();
|
|
|
|
virtual PRBool PeekOffsetCharacter(PRBool aForward, PRInt32* aOffset);
|
|
|
|
// nsIHTMLReflow overrides
|
|
virtual void AddInlineMinWidth(nsIRenderingContext *aRenderingContext,
|
|
InlineMinWidthData *aData);
|
|
virtual void AddInlinePrefWidth(nsIRenderingContext *aRenderingContext,
|
|
InlinePrefWidthData *aData);
|
|
virtual nsSize ComputeSize(nsIRenderingContext *aRenderingContext,
|
|
nsSize aCBSize, nscoord aAvailableWidth,
|
|
nsSize aMargin, nsSize aBorder, nsSize aPadding,
|
|
PRBool aShrinkWrap);
|
|
virtual nsRect ComputeTightBounds(gfxContext* aContext) const;
|
|
NS_IMETHOD Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
virtual PRBool CanContinueTextRun() const;
|
|
|
|
virtual void PullOverflowsFromPrevInFlow();
|
|
|
|
// Take all of the frames away from this frame. The caller is
|
|
// presumed to keep them alive.
|
|
void StealAllFrames() {
|
|
mFrames.SetFrames(nsnull);
|
|
}
|
|
|
|
/**
|
|
* Return true if the frame is leftmost frame or continuation.
|
|
*/
|
|
PRBool IsLeftMost() const {
|
|
// If the frame's bidi visual state is set, return is-leftmost state
|
|
// else return true if it's the first continuation.
|
|
return (GetStateBits() & NS_INLINE_FRAME_BIDI_VISUAL_STATE_IS_SET)
|
|
? !!(GetStateBits() & NS_INLINE_FRAME_BIDI_VISUAL_IS_LEFT_MOST)
|
|
: (!GetPrevInFlow());
|
|
}
|
|
|
|
/**
|
|
* Return true if the frame is rightmost frame or continuation.
|
|
*/
|
|
PRBool IsRightMost() const {
|
|
// If the frame's bidi visual state is set, return is-rightmost state
|
|
// else return true if it's the last continuation.
|
|
return (GetStateBits() & NS_INLINE_FRAME_BIDI_VISUAL_STATE_IS_SET)
|
|
? !!(GetStateBits() & NS_INLINE_FRAME_BIDI_VISUAL_IS_RIGHT_MOST)
|
|
: (!GetNextInFlow());
|
|
}
|
|
|
|
protected:
|
|
// Additional reflow state used during our reflow methods
|
|
struct InlineReflowState {
|
|
nsIFrame* mPrevFrame;
|
|
nsInlineFrame* mNextInFlow;
|
|
nsIFrame* mLineContainer;
|
|
PRPackedBool mSetParentPointer; // when reflowing child frame first set its
|
|
// parent frame pointer
|
|
|
|
InlineReflowState() {
|
|
mPrevFrame = nsnull;
|
|
mNextInFlow = nsnull;
|
|
mLineContainer = nsnull;
|
|
mSetParentPointer = PR_FALSE;
|
|
}
|
|
};
|
|
|
|
nsInlineFrame(nsStyleContext* aContext) : nsInlineFrameSuper(aContext) {}
|
|
|
|
virtual PRIntn GetSkipSides() const;
|
|
|
|
nsresult ReflowFrames(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
InlineReflowState& rs,
|
|
nsHTMLReflowMetrics& aMetrics,
|
|
nsReflowStatus& aStatus);
|
|
|
|
nsresult ReflowInlineFrame(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
InlineReflowState& rs,
|
|
nsIFrame* aFrame,
|
|
nsReflowStatus& aStatus);
|
|
|
|
/**
|
|
* Reparent floats whose placeholders are inline descendants of aFrame from
|
|
* whatever block they're currently parented by to aOurBlock.
|
|
* @param aReparentSiblings if this is true, we follow aFrame's
|
|
* GetNextSibling chain reparenting them all
|
|
*/
|
|
void ReparentFloatsForInlineChild(nsIFrame* aOurBlock, nsIFrame* aFrame,
|
|
PRBool aReparentSiblings);
|
|
|
|
virtual nsIFrame* PullOneFrame(nsPresContext* aPresContext,
|
|
InlineReflowState& rs,
|
|
PRBool* aIsComplete);
|
|
|
|
virtual void PushFrames(nsPresContext* 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 nsIFrame* NS_NewFirstLineFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHOD GetFrameName(nsAString& aResult) const;
|
|
#endif
|
|
virtual nsIAtom* GetType() const;
|
|
NS_IMETHOD Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
virtual void PullOverflowsFromPrevInFlow();
|
|
|
|
// 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(nsStyleContext* aContext) : nsInlineFrame(aContext) {}
|
|
|
|
virtual nsIFrame* PullOneFrame(nsPresContext* 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:
|
|
nsPositionedInlineFrame(nsStyleContext* aContext)
|
|
: nsInlineFrame(aContext)
|
|
, mAbsoluteContainer(nsGkAtoms::absoluteList)
|
|
{}
|
|
|
|
virtual ~nsPositionedInlineFrame() { } // useful for debugging
|
|
|
|
virtual void Destroy();
|
|
|
|
NS_IMETHOD SetInitialChildList(nsIAtom* aListName,
|
|
nsIFrame* aChildList);
|
|
NS_IMETHOD AppendFrames(nsIAtom* aListName,
|
|
nsIFrame* aFrameList);
|
|
NS_IMETHOD InsertFrames(nsIAtom* aListName,
|
|
nsIFrame* aPrevFrame,
|
|
nsIFrame* aFrameList);
|
|
NS_IMETHOD RemoveFrame(nsIAtom* aListName,
|
|
nsIFrame* aOldFrame);
|
|
|
|
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists);
|
|
|
|
virtual nsIAtom* GetAdditionalChildListName(PRInt32 aIndex) const;
|
|
|
|
virtual nsIFrame* GetFirstChild(nsIAtom* aListName) const;
|
|
|
|
NS_IMETHOD Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
virtual nsIAtom* GetType() const;
|
|
|
|
virtual PRBool NeedsView() { return PR_TRUE; }
|
|
|
|
protected:
|
|
nsAbsoluteContainingBlock mAbsoluteContainer;
|
|
};
|
|
|
|
#endif /* nsInlineFrame_h___ */
|