зеркало из https://github.com/mozilla/gecko-dev.git
247 строки
9.1 KiB
C++
247 строки
9.1 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 Communicator client 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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#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 NS_INLINE_FRAME_CID \
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{ 0xa6cf90e0, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
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#define nsInlineFrameSuper nsHTMLContainerFrame
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#define NS_INLINE_FRAME_CONTAINS_PERCENT_AWARE_CHILD 0x00100000
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// NS_INLINE_FRAME_HARD_TEXT_OFFSETS is used for access keys, where what
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// would normally be 1 text frame is split into 3 sets of an inline parent
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// and text child (the pre access key text, the underlined key text, and
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// the post access key text). The offsets of the 3 text frame children
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// are set in nsCSSFrameConstructor
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#define NS_INLINE_FRAME_HARD_TEXT_OFFSETS 0x00200000
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/**
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* Inline frame class.
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*
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* This class manages a list of child frames that are inline frames. Working with
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* nsLineLayout, the class will reflow and place inline frames on a line.
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*/
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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(nsIPresShell* aPresShell, 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 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 ReplaceFrame(nsIPresContext* aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame,
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nsIFrame* aNewFrame);
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NS_IMETHOD ReflowDirtyChild(nsIPresShell* aPresShell, nsIFrame* aChild);
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#ifdef ACCESSIBILITY
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NS_IMETHODIMP GetAccessible(nsIAccessible** aAccessible);
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#endif
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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NS_IMETHOD IsEmpty(nsCompatibility aCompatMode,
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PRBool aIsPre,
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PRBool* aResult);
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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 CanContinueTextRun(PRBool& aContinueTextRun) const;
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static nsIID kInlineFrameCID;
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// Take all of the frames away from this frame. The caller is
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// presumed to keep them alive.
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void StealAllFrames() {
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mFrames.SetFrames(nsnull);
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}
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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* mPrevFrame;
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nsInlineFrame* mNextInFlow;
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PRPackedBool mSetParentPointer; // when reflowing child frame first set its
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// parent frame pointer
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InlineReflowState() {
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mPrevFrame = nsnull;
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mNextInFlow = nsnull;
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mSetParentPointer = PR_FALSE;
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};
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};
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nsInlineFrame();
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virtual PRIntn GetSkipSides() const;
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nsresult ReflowFrames(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* PullOneFrame(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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};
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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 (:first-line style in particular).
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*/
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class nsFirstLineFrame : public nsInlineFrame {
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public:
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friend nsresult NS_NewFirstLineFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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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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// Take frames starting at aFrame until the end of the frame-list
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// away from this frame. The caller is presumed to keep them alive.
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void StealFramesFrom(nsIFrame* aFrame);
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protected:
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nsFirstLineFrame();
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virtual nsIFrame* PullOneFrame(nsIPresContext* aPresContext,
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InlineReflowState& rs,
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PRBool* aIsComplete);
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};
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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 Destroy(nsIPresContext* aPresContext);
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#ifdef DEBUG
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NS_IMETHOD SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
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#endif
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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(nsIPresContext* aPresContext,
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nsIAtom* aListName,
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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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