зеркало из https://github.com/mozilla/gecko-dev.git
1766 строки
63 KiB
C++
1766 строки
63 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.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications 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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*/
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#include "nsCOMPtr.h"
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#include "nsHTMLParts.h"
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#include "nsIPresContext.h"
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#include "nsIStyleContext.h"
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#include "nsIReflowCommand.h"
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#include "nsIDeviceContext.h"
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#include "nsPageFrame.h"
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#include "nsViewsCID.h"
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#include "nsIView.h"
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#include "nsIViewManager.h"
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#include "nsHTMLContainerFrame.h"
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#include "nsHTMLIIDs.h"
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#include "nsCSSRendering.h"
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#include "nsIScrollableView.h"
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#include "nsWidgetsCID.h"
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#include "nsIAreaFrame.h"
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#include "nsGfxScrollFrame.h"
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#include "nsLayoutAtoms.h"
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#include "nsIXMLContent.h"
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#include "nsXULAtoms.h"
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#include "nsHTMLAtoms.h"
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#include "nsINameSpaceManager.h"
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#include "nsISupportsArray.h"
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#include "nsIDocument.h"
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#include "nsIFontMetrics.h"
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#include "nsIDocumentObserver.h"
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#include "nsIDocument.h"
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#include "nsIScrollPositionListener.h"
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static NS_DEFINE_IID(kWidgetCID, NS_CHILD_CID);
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static NS_DEFINE_IID(kScrollingViewCID, NS_SCROLLING_VIEW_CID);
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static NS_DEFINE_IID(kViewCID, NS_VIEW_CID);
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static NS_DEFINE_IID(kIViewIID, NS_IVIEW_IID);
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static NS_DEFINE_IID(kScrollViewIID, NS_ISCROLLABLEVIEW_IID);
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static NS_DEFINE_IID(kAreaFrameIID, NS_IAREAFRAME_IID);
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static NS_DEFINE_IID(kIAnonymousContentCreatorIID, NS_IANONYMOUS_CONTENT_CREATOR_IID);
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//----------------------------------------------------------------------
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class nsGfxScrollFrameInner : public nsIDocumentObserver,
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public nsIScrollPositionListener {
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NS_DECL_ISUPPORTS
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public:
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nsGfxScrollFrameInner(nsGfxScrollFrame* aOuter);
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virtual ~nsGfxScrollFrameInner();
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// nsIScrollPositionListener
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NS_IMETHOD ScrollPositionWillChange(nsIScrollableView* aScrollable, nscoord aX, nscoord aY);
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NS_IMETHOD ScrollPositionDidChange(nsIScrollableView* aScrollable, nscoord aX, nscoord aY);
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// nsIDocumentObserver
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NS_IMETHOD BeginUpdate(nsIDocument *aDocument) { return NS_OK; }
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NS_IMETHOD EndUpdate(nsIDocument *aDocument) { return NS_OK; }
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NS_IMETHOD BeginLoad(nsIDocument *aDocument) { return NS_OK; }
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NS_IMETHOD EndLoad(nsIDocument *aDocument) { return NS_OK; }
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NS_IMETHOD BeginReflow(nsIDocument *aDocument,
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nsIPresShell* aShell) { return NS_OK; }
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NS_IMETHOD EndReflow(nsIDocument *aDocument,
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nsIPresShell* aShell) { return NS_OK; }
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NS_IMETHOD ContentChanged(nsIDocument* aDoc,
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nsIContent* aContent,
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nsISupports* aSubContent) { return NS_OK; }
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NS_IMETHOD ContentStatesChanged(nsIDocument* aDocument,
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nsIContent* aContent1,
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nsIContent* aContent2) { return NS_OK; }
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NS_IMETHOD AttributeChanged(nsIDocument *aDocument,
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nsIContent* aContent,
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PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aHint);
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NS_IMETHOD ContentAppended(nsIDocument *aDocument,
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nsIContent* aContainer,
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PRInt32 aNewIndexInContainer) { return NS_OK; }
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NS_IMETHOD ContentInserted(nsIDocument *aDocument,
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nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInContainer) { return NS_OK; }
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NS_IMETHOD ContentReplaced(nsIDocument *aDocument,
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nsIContent* aContainer,
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nsIContent* aOldChild,
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nsIContent* aNewChild,
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PRInt32 aIndexInContainer) { return NS_OK; }
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NS_IMETHOD ContentRemoved(nsIDocument *aDocument,
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nsIContent* aContainer,
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nsIContent* aChild,
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PRInt32 aIndexInContainer) { return NS_OK; }
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NS_IMETHOD StyleSheetAdded(nsIDocument *aDocument,
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nsIStyleSheet* aStyleSheet) { return NS_OK; }
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NS_IMETHOD StyleSheetRemoved(nsIDocument *aDocument,
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nsIStyleSheet* aStyleSheet) { return NS_OK; }
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NS_IMETHOD StyleSheetDisabledStateChanged(nsIDocument *aDocument,
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nsIStyleSheet* aStyleSheet,
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PRBool aDisabled) { return NS_OK; }
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NS_IMETHOD StyleRuleChanged(nsIDocument *aDocument,
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nsIStyleSheet* aStyleSheet,
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nsIStyleRule* aStyleRule,
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PRInt32 aHint) { return NS_OK; }
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NS_IMETHOD StyleRuleAdded(nsIDocument *aDocument,
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nsIStyleSheet* aStyleSheet,
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nsIStyleRule* aStyleRule) { return NS_OK; }
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NS_IMETHOD StyleRuleRemoved(nsIDocument *aDocument,
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nsIStyleSheet* aStyleSheet,
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nsIStyleRule* aStyleRule) { return NS_OK; }
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NS_IMETHOD DocumentWillBeDestroyed(nsIDocument *aDocument) { mDocument = nsnull; return NS_OK; }
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void SetAttribute(nsIFrame* aFrame, nsIAtom* aAtom, nscoord aSize);
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PRInt32 GetIntegerAttribute(nsIFrame* aFrame, nsIAtom* atom, PRInt32 defaultValue);
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nsresult CalculateChildTotalSize(nsIFrame* aKidFrame,
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nsHTMLReflowMetrics& aKidReflowMetrics);
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nsresult GetFrameSize( nsIFrame* aFrame,
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nsSize& aSize);
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nsresult SetFrameSize( nsIPresContext* aPresContext,
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nsIFrame* aFrame,
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nsSize aSize);
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nsresult CalculateScrollAreaSize(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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const nsSize& aSbSize,
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nsSize& aScrollAreaSize);
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void SetScrollbarVisibility(nsIFrame* aScrollbar, PRBool aVisible);
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void DetermineReflowNeed(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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PRBool& aHscrollbarNeedsReflow,
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PRBool& aVscrollbarNeedsReflow,
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PRBool& aScrollAreaNeedsReflow,
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nsIFrame*& aIncrementalChild);
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void ReflowScrollbars( nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus,
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PRBool& aHscrollbarNeedsReflow,
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PRBool& aVscrollbarNeedsReflow,
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PRBool& aScrollBarResized,
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nsIFrame*& aIncrementalChild);
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void ReflowScrollbar( nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus,
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PRBool& aScrollBarResized,
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nsIFrame* aScrollBarFrame,
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nsIFrame*& aIncrementalChild);
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nsresult ReflowFrame( 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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nsIFrame* aFrame,
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const nsSize& aAvailable,
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const nsSize& aComputed,
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PRBool& aResized,
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nsIFrame*& aIncrementalChild);
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void ReflowScrollArea( 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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PRBool& aHscrollbarNeedsReflow,
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PRBool& aVscrollbarNeedsReflow,
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PRBool& aScrollAreaNeedsReflow,
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nsIFrame*& aIncrementalChild);
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void LayoutChildren(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState);
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void GetScrollbarDimensions(nsIPresContext* aPresContext,
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nsSize& aSbSize);
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void AddRemoveScrollbar (PRBool& aHasScrollbar, nscoord& aSize, nscoord aSbSize, PRBool aAdd);
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void AddHorizontalScrollbar (const nsSize& aSbSize, nsSize& aScrollAreaSize);
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void AddVerticalScrollbar (const nsSize& aSbSize, nsSize& aScrollAreaSize);
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void RemoveHorizontalScrollbar(const nsSize& aSbSize, nsSize& aScrollAreaSize);
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void RemoveVerticalScrollbar (const nsSize& aSbSize, nsSize& aScrollAreaSize);
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nsIScrollableView* GetScrollableView(nsIPresContext* aPresContext);
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void GetScrolledContentSize(nsSize& aSize);
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void ScrollbarChanged(nsIPresContext* aPresContext, nscoord aX, nscoord aY);
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nsresult GetContentOf(nsIFrame* aFrame, nsIContent** aContent);
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nsIFrame* mHScrollbarFrame;
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nsIFrame* mVScrollbarFrame;
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nsIFrame* mScrollAreaFrame;
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PRBool mHasVerticalScrollbar;
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PRBool mHasHorizontalScrollbar;
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PRBool mHscrollbarNeedsReflow;
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PRBool mVscrollbarNeedsReflow;
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PRBool mScrollAreaNeedsReflow;
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nscoord mOnePixel;
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nsCOMPtr<nsIDocument> mDocument;
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nsGfxScrollFrame* mOuter;
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nsIScrollableView* mScrollableView;
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};
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NS_IMPL_ISUPPORTS2(nsGfxScrollFrameInner, nsIDocumentObserver, nsIScrollPositionListener)
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nsresult
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NS_NewGfxScrollFrame(nsIFrame** aNewFrame, nsIDocument* aDocument)
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{
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NS_PRECONDITION(aNewFrame, "null OUT ptr");
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if (nsnull == aNewFrame) {
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return NS_ERROR_NULL_POINTER;
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}
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nsGfxScrollFrame* it = new nsGfxScrollFrame(aDocument);
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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*aNewFrame = it;
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return NS_OK;
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}
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nsGfxScrollFrame::nsGfxScrollFrame(nsIDocument* aDocument)
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{
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mInner = new nsGfxScrollFrameInner(this);
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mInner->AddRef();
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mInner->mDocument = aDocument;
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mPresContext = nsnull;
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}
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nsGfxScrollFrame::~nsGfxScrollFrame()
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{
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mInner->mOuter = nsnull;
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mInner->Release();
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mPresContext = nsnull;
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}
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nsresult NS_CreateAnonymousNode(nsIContent* aParent, nsIAtom* aTag, PRInt32 aNameSpaceId, nsCOMPtr<nsIContent>& aNewNode);
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NS_IMETHODIMP
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nsGfxScrollFrame::CreateAnonymousContent(nsISupportsArray& aAnonymousChildren)
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{
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/*
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nsCOMPtr<nsIDocument> idocument;
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mContent->GetDocument(*getter_AddRefs(idocument));
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// create horzontal scrollbar
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nsCOMPtr<nsIXMLContent> content;
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nsresult rv = NS_NewXMLElement(getter_AddRefs(content), nsXULAtoms::titledbutton);
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content->SetDocument(idocument, PR_FALSE);
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content->SetNameSpaceID(nsXULAtoms::nameSpaceID);
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content->SetAttribute(kNameSpaceID_None, nsHTMLAtoms::value, "foo", PR_FALSE);
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aAnonymousChildren.AppendElement(content);
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// create horzontal scrollbar
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rv = NS_NewXMLElement(getter_AddRefs(content), nsXULAtoms::titledbutton);
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content->SetDocument(idocument, PR_FALSE);
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content->SetNameSpaceID(nsXULAtoms::nameSpaceID);
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content->SetAttribute(kNameSpaceID_None, nsHTMLAtoms::value, "foo", PR_FALSE);
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aAnonymousChildren.AppendElement(content);
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*/
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/* Comment this in to enable GFX scrollbars */
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// create horzontal scrollbar
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nsCOMPtr<nsIContent> content;
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NS_CreateAnonymousNode(mContent, nsXULAtoms::scrollbar, nsXULAtoms::nameSpaceID, content);
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content->SetAttribute(kNameSpaceID_None, nsHTMLAtoms::align, "horizontal", PR_FALSE);
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aAnonymousChildren.AppendElement(content);
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// create vertical scrollbar
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NS_CreateAnonymousNode(mContent, nsXULAtoms::scrollbar, nsXULAtoms::nameSpaceID, content);
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content->SetAttribute(kNameSpaceID_None, nsHTMLAtoms::align, "vertical", PR_FALSE);
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aAnonymousChildren.AppendElement(content);
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// XXX For GFX never have scrollbars
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// mScrollableView->SetScrollPreference(nsScrollPreference_kNeverScroll);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsGfxScrollFrame::Destroy(nsIPresContext* aPresContext)
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{
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return nsHTMLContainerFrame::Destroy(aPresContext);
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}
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NS_IMETHODIMP
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nsGfxScrollFrame::Init(nsIPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsIStyleContext* aStyleContext,
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nsIFrame* aPrevInFlow)
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{
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mPresContext = aPresContext;
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nsresult rv = nsHTMLContainerFrame::Init(aPresContext, aContent,
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aParent, aStyleContext,
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aPrevInFlow);
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// nsCOMPtr<nsIContent> content;
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// mInner->GetContentOf(this, getter_AddRefs(content));
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// content->GetDocument(*getter_AddRefs(mInner->mDocument));
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mInner->mDocument->AddObserver(mInner);
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return rv;
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}
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NS_IMETHODIMP
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nsGfxScrollFrame::SetInitialChildList(nsIPresContext* aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList)
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{
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nsresult rv = nsHTMLContainerFrame::SetInitialChildList(aPresContext, aListName,
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aChildList);
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// get scroll area
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mInner->mScrollAreaFrame = mFrames.FirstChild();
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// horizontal scrollbar
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mInner->mScrollAreaFrame->GetNextSibling(&mInner->mHScrollbarFrame);
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// vertical scrollbar
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mInner->mHScrollbarFrame->GetNextSibling(&mInner->mVScrollbarFrame);
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// listen for scroll events.
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mInner->GetScrollableView(aPresContext)->AddScrollPositionListener(mInner);
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return rv;
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}
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NS_IMETHODIMP
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nsGfxScrollFrame::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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{
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// Only one child frame allowed
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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nsGfxScrollFrame::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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{
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// Only one child frame allowed
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP
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nsGfxScrollFrame::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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{
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// Scroll frame doesn't support incremental changes
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP
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nsGfxScrollFrame::DidReflow(nsIPresContext* aPresContext,
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nsDidReflowStatus aStatus)
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{
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// Let the default nsFrame implementation clear the state flags
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// and size and position our view
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nsresult rv = nsHTMLContainerFrame::DidReflow(aPresContext, aStatus);
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return rv;
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}
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NS_IMETHODIMP
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nsGfxScrollFrame::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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{
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NS_FRAME_TRACE_MSG(NS_FRAME_TRACE_CALLS,
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("enter nsGfxScrollFrame::Reflow: maxSize=%d,%d",
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aReflowState.availableWidth,
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aReflowState.availableHeight));
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// scroll frames can't have padding. So lets remove their padding from the reflow state
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// and move it to their computed size.
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nsMargin padding = aReflowState.mComputedPadding;
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if (aReflowState.mComputedWidth != NS_INTRINSICSIZE)
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((nscoord&)aReflowState.mComputedWidth) += padding.left + padding.right;
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if (aReflowState.mComputedHeight != NS_INTRINSICSIZE)
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((nscoord&)aReflowState.mComputedHeight) += padding.top + padding.bottom;
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((nsMargin&)aReflowState.mComputedPadding) = nsMargin(0,0,0,0);
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((nsMargin&)aReflowState.mComputedBorderPadding) -= padding;
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// assume we need to reflow nothing
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PRBool hscrollbarNeedsReflow = mInner->mHscrollbarNeedsReflow;
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PRBool vscrollbarNeedsReflow = mInner->mVscrollbarNeedsReflow;
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PRBool scrollAreaNeedsReflow = mInner->mScrollAreaNeedsReflow;
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nsIFrame* incrementalChild = nsnull;
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// see what things need reflow
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mInner->DetermineReflowNeed(aPresContext,
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aDesiredSize,
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aReflowState,
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aStatus,
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hscrollbarNeedsReflow,
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vscrollbarNeedsReflow,
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scrollAreaNeedsReflow,
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incrementalChild);
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// next reflow the scrollbars so we will at least know their size. If they are bigger or smaller than
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// we thought we will have to reflow the scroll area as well.
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mInner->ReflowScrollbars( aPresContext,
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aReflowState,
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aStatus,
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hscrollbarNeedsReflow,
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vscrollbarNeedsReflow,
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scrollAreaNeedsReflow,
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incrementalChild);
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// then reflow the scroll area. If it gets bigger it could signal the scrollbars need
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// to be reflowed.
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mInner->ReflowScrollArea( aPresContext,
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aDesiredSize,
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aReflowState,
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aStatus,
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hscrollbarNeedsReflow,
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vscrollbarNeedsReflow,
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scrollAreaNeedsReflow,
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incrementalChild);
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// reflow the scrollbars again but only the ones that need it.
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mInner->ReflowScrollbars( aPresContext,
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aReflowState,
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aStatus,
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hscrollbarNeedsReflow,
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vscrollbarNeedsReflow,
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scrollAreaNeedsReflow,
|
|
incrementalChild);
|
|
|
|
// layout all the children.
|
|
mInner->LayoutChildren( aPresContext,
|
|
aDesiredSize,
|
|
aReflowState);
|
|
|
|
// redraw anything that needs it.
|
|
if ( aReflowState.reason == eReflowReason_Incremental )
|
|
if (hscrollbarNeedsReflow && vscrollbarNeedsReflow && scrollAreaNeedsReflow)
|
|
Invalidate(aPresContext, nsRect(0,0,mRect.width,mRect.height), PR_FALSE);
|
|
|
|
|
|
mInner->mHscrollbarNeedsReflow = PR_FALSE;
|
|
mInner->mVscrollbarNeedsReflow = PR_FALSE;
|
|
mInner->mScrollAreaNeedsReflow = PR_FALSE;
|
|
|
|
/*
|
|
if (aReflowState.mComputedWidth != NS_INTRINSICSIZE)
|
|
((nscoord&)aReflowState.mComputedWidth) -= (padding.left + padding.right);
|
|
|
|
if (aReflowState.mComputedHeight != NS_INTRINSICSIZE)
|
|
((nscoord&)aReflowState.mComputedHeight) -= (padding.top + padding.bottom);
|
|
|
|
((nsMargin&)aReflowState.mComputedPadding) = padding;
|
|
((nsMargin&)aReflowState.mComputedBorderPadding) += padding;
|
|
*/
|
|
|
|
NS_FRAME_TRACE_MSG(NS_FRAME_TRACE_CALLS,
|
|
("exit nsGfxScrollFrame::Reflow: status=%d width=%d height=%d",
|
|
aStatus, aDesiredSize.width, aDesiredSize.height));
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
/*
|
|
NS_IMETHODIMP
|
|
nsGfxScrollFrame::Paint(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer)
|
|
{
|
|
|
|
if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
|
|
// Only paint the border and background if we're visible
|
|
const nsStyleDisplay* display = (const nsStyleDisplay*)
|
|
mStyleContext->GetStyleData(eStyleStruct_Display);
|
|
|
|
if (display->mVisible) {
|
|
// Paint our border only (no background)
|
|
const nsStyleSpacing* spacing = (const nsStyleSpacing*)
|
|
mStyleContext->GetStyleData(eStyleStruct_Spacing);
|
|
|
|
nsRect rect(0, 0, mRect.width, mRect.height);
|
|
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
|
|
aDirtyRect, rect, *spacing, mStyleContext, 0);
|
|
|
|
|
|
// paint the little square between the scrollbars
|
|
nsRect vbar;
|
|
nsRect hbar;
|
|
|
|
// get the child's rect
|
|
mVScrollbarFrame->GetRect(vbar);
|
|
mVScrollbarFrame->GetRect(hbar);
|
|
|
|
// get the margin
|
|
const nsStyleSpacing* s;
|
|
nsresult rv = mVScrollbarFrame->GetStyleData(eStyleStruct_Spacing,
|
|
(const nsStyleStruct*&) s);
|
|
|
|
nsMargin margin;
|
|
if (!s->GetMargin(margin))
|
|
margin.SizeTo(0,0,0,0);
|
|
|
|
vbar.Inflate(margin);
|
|
|
|
|
|
// get the margin
|
|
rv = mHScrollbarFrame->GetStyleData(eStyleStruct_Spacing,
|
|
(const nsStyleStruct*&) s);
|
|
|
|
if (!s->GetMargin(margin))
|
|
margin.SizeTo(0,0,0,0);
|
|
|
|
hbar.Inflate(margin);
|
|
|
|
rect.SetRect(hbar.x + hbar.width, vbar.y + vbar.height, vbar.width, hbar.height);
|
|
|
|
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
|
|
aDirtyRect, rect, *myColor, *mySpacing, 0, 0);
|
|
|
|
}
|
|
} else {
|
|
|
|
// Paint our children
|
|
nsresult rv = nsHTMLContainerFrame::Paint(aPresContext, aRenderingContext, aDirtyRect,
|
|
aWhichLayer);
|
|
return rv;
|
|
}
|
|
}
|
|
*/
|
|
|
|
NS_IMETHODIMP
|
|
nsGfxScrollFrame::Paint(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer)
|
|
{
|
|
/*
|
|
if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
|
|
// Only paint the border and background if we're visible
|
|
const nsStyleDisplay* display = (const nsStyleDisplay*)
|
|
mStyleContext->GetStyleData(eStyleStruct_Display);
|
|
|
|
if (display->mVisible) {
|
|
// Paint our border only (no background)
|
|
const nsStyleSpacing* spacing = (const nsStyleSpacing*)
|
|
mStyleContext->GetStyleData(eStyleStruct_Spacing);
|
|
|
|
nsRect rect(0, 0, mRect.width, mRect.height);
|
|
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
|
|
aDirtyRect, rect, *spacing, mStyleContext, 0);
|
|
nsCSSRendering::PaintOutline(aPresContext, aRenderingContext, this,
|
|
aDirtyRect, rect, *spacing, mStyleContext, 0);
|
|
}
|
|
}
|
|
*/
|
|
|
|
// Paint our children
|
|
return nsHTMLContainerFrame::Paint(aPresContext, aRenderingContext, aDirtyRect,
|
|
aWhichLayer);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsGfxScrollFrame::GetContentAndOffsetsFromPoint(nsIPresContext* aCX,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aContentOffset,
|
|
PRInt32& aContentOffsetEnd,
|
|
PRBool& aBeginFrameContent)
|
|
{
|
|
if (! mInner)
|
|
return NS_ERROR_NULL_POINTER;
|
|
|
|
return mInner->mScrollAreaFrame->GetContentAndOffsetsFromPoint(aCX, aPoint, aNewContent, aContentOffset, aContentOffsetEnd, aBeginFrameContent);
|
|
}
|
|
|
|
PRIntn
|
|
nsGfxScrollFrame::GetSkipSides() const
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsGfxScrollFrame::GetFrameType(nsIAtom** aType) const
|
|
{
|
|
return nsHTMLContainerFrame::GetFrameType(aType);
|
|
}
|
|
|
|
#ifdef NS_DEBUG
|
|
NS_IMETHODIMP
|
|
nsGfxScrollFrame::GetFrameName(nsString& aResult) const
|
|
{
|
|
return MakeFrameName("GfxScroll", aResult);
|
|
}
|
|
#endif
|
|
|
|
NS_IMETHODIMP
|
|
nsGfxScrollFrame::QueryInterface(REFNSIID aIID, void** aInstancePtr)
|
|
{
|
|
if (NULL == aInstancePtr) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
*aInstancePtr = NULL;
|
|
|
|
if (aIID.Equals(kIAnonymousContentCreatorIID)) {
|
|
*aInstancePtr = (void*)(nsIAnonymousContentCreator*) this;
|
|
NS_ADDREF_THIS();
|
|
return NS_OK;
|
|
} else if (aIID.Equals(kIBoxIID)) {
|
|
*aInstancePtr = (void*)(nsIBox*) this;
|
|
NS_ADDREF_THIS();
|
|
return NS_OK;
|
|
}
|
|
|
|
return nsHTMLContainerFrame::QueryInterface(aIID, aInstancePtr);
|
|
}
|
|
|
|
|
|
//-------------------- Inner ----------------------
|
|
|
|
nsGfxScrollFrameInner::nsGfxScrollFrameInner(nsGfxScrollFrame* aOuter):mHScrollbarFrame(nsnull),
|
|
mVScrollbarFrame(nsnull),
|
|
mScrollAreaFrame(nsnull),
|
|
mHasVerticalScrollbar(PR_FALSE),
|
|
mHasHorizontalScrollbar(PR_FALSE),
|
|
mOnePixel(20)
|
|
{
|
|
mOuter = aOuter;
|
|
mRefCnt = 0;
|
|
mHscrollbarNeedsReflow = PR_FALSE;
|
|
mVscrollbarNeedsReflow = PR_FALSE;
|
|
mScrollAreaNeedsReflow = PR_FALSE;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsGfxScrollFrameInner::ScrollPositionWillChange(nsIScrollableView* aScrollable, nscoord aX, nscoord aY)
|
|
{
|
|
// Do nothing.
|
|
return NS_OK;
|
|
}
|
|
|
|
/**
|
|
* Called if something externally moves the scroll area
|
|
* This can happen if the user pages up down or uses arrow keys
|
|
* So what we need to do up adjust the scrollbars to match.
|
|
*/
|
|
NS_IMETHODIMP
|
|
nsGfxScrollFrameInner::ScrollPositionDidChange(nsIScrollableView* aScrollable, nscoord aX, nscoord aY)
|
|
{
|
|
SetAttribute(mVScrollbarFrame, nsXULAtoms::curpos, aY);
|
|
SetAttribute(mHScrollbarFrame, nsXULAtoms::curpos, aX);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsGfxScrollFrameInner::AttributeChanged(nsIDocument *aDocument,
|
|
nsIContent* aContent,
|
|
PRInt32 aNameSpaceID,
|
|
nsIAtom* aAttribute,
|
|
PRInt32 aHint)
|
|
{
|
|
if (mHScrollbarFrame && mVScrollbarFrame)
|
|
{
|
|
nsCOMPtr<nsIContent> vcontent;
|
|
nsCOMPtr<nsIContent> hcontent;
|
|
|
|
mHScrollbarFrame->GetContent(getter_AddRefs(hcontent));
|
|
mVScrollbarFrame->GetContent(getter_AddRefs(vcontent));
|
|
|
|
if (hcontent.get() == aContent || vcontent.get() == aContent)
|
|
{
|
|
nscoord x = 0;
|
|
nscoord y = 0;
|
|
|
|
nsString value;
|
|
if (NS_CONTENT_ATTR_HAS_VALUE == hcontent->GetAttribute(kNameSpaceID_None, nsXULAtoms::curpos, value))
|
|
{
|
|
PRInt32 error;
|
|
|
|
// convert it to an integer
|
|
x = value.ToInteger(&error);
|
|
}
|
|
|
|
if (NS_CONTENT_ATTR_HAS_VALUE == vcontent->GetAttribute(kNameSpaceID_None, nsXULAtoms::curpos, value))
|
|
{
|
|
PRInt32 error;
|
|
|
|
// convert it to an integer
|
|
y = value.ToInteger(&error);
|
|
}
|
|
|
|
ScrollbarChanged(mOuter->mPresContext, x*mOnePixel, y*mOnePixel);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsIScrollableView*
|
|
nsGfxScrollFrameInner::GetScrollableView(nsIPresContext* aPresContext)
|
|
{
|
|
nsIScrollableView* scrollingView;
|
|
nsIView* view;
|
|
mScrollAreaFrame->GetView(aPresContext, &view);
|
|
nsresult result = view->QueryInterface(kScrollViewIID, (void**)&scrollingView);
|
|
NS_ASSERTION(NS_SUCCEEDED(result), "assertion gfx scrollframe does not contain a scrollframe");
|
|
return scrollingView;
|
|
}
|
|
|
|
void
|
|
nsGfxScrollFrameInner::GetScrolledContentSize(nsSize& aSize)
|
|
{
|
|
// get the ara frame is the scrollarea
|
|
nsIFrame* child = nsnull;
|
|
mScrollAreaFrame->FirstChild(nsnull, &child);
|
|
|
|
nsRect rect(0,0,0,0);
|
|
child->GetRect(rect);
|
|
aSize.width = rect.width;
|
|
aSize.height = rect.height;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsGfxScrollFrameInner::SetFrameSize(nsIPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
nsSize aSize)
|
|
|
|
{
|
|
// get the margin
|
|
const nsStyleSpacing* spacing;
|
|
nsresult rv = aFrame->GetStyleData(eStyleStruct_Spacing,
|
|
(const nsStyleStruct*&) spacing);
|
|
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "failed to get spacing");
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
nsMargin margin;
|
|
if (!spacing->GetMargin(margin))
|
|
margin.SizeTo(0,0,0,0);
|
|
|
|
// add in the margin
|
|
aSize.width -= margin.left + margin.right;
|
|
aSize.height -= margin.top + margin.bottom;
|
|
|
|
aFrame->SizeTo(aPresContext, aSize.width, aSize.height);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
nsresult
|
|
nsGfxScrollFrameInner::GetFrameSize( nsIFrame* aFrame,
|
|
nsSize& aSize)
|
|
|
|
{
|
|
// get the child's rect
|
|
aFrame->GetSize(aSize);
|
|
|
|
// get the margin
|
|
const nsStyleSpacing* spacing;
|
|
nsresult rv = aFrame->GetStyleData(eStyleStruct_Spacing,
|
|
(const nsStyleStruct*&) spacing);
|
|
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "failed to get spacing");
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
nsMargin margin;
|
|
if (!spacing->GetMargin(margin))
|
|
margin.SizeTo(0,0,0,0);
|
|
|
|
// add in the margin
|
|
aSize.width += margin.left + margin.right;
|
|
aSize.height += margin.top + margin.bottom;
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
|
|
// Returns the width of the vertical scrollbar and the height of
|
|
// the horizontal scrollbar in twips
|
|
void
|
|
nsGfxScrollFrameInner::GetScrollbarDimensions(nsIPresContext* aPresContext,
|
|
nsSize& aSbSize)
|
|
{
|
|
|
|
// if we are using
|
|
nsRect rect(0,0,0,0);
|
|
mHScrollbarFrame->GetRect(rect);
|
|
aSbSize.height = rect.height;
|
|
|
|
rect.SetRect(0,0,0,0);
|
|
mVScrollbarFrame->GetRect(rect);
|
|
aSbSize.width = rect.width;
|
|
return;
|
|
}
|
|
|
|
|
|
// Calculates the size of the scroll area. This is the area inside of the
|
|
// border edge and inside of any vertical and horizontal scrollbar
|
|
// Also returns whether space was reserved for the vertical scrollbar.
|
|
nsresult
|
|
nsGfxScrollFrameInner::CalculateScrollAreaSize(nsIPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
const nsSize& aSbSize,
|
|
nsSize& aScrollAreaSize)
|
|
{
|
|
aScrollAreaSize.width = aReflowState.mComputedWidth;
|
|
aScrollAreaSize.height = aReflowState.mComputedHeight;
|
|
|
|
// get the current state
|
|
PRBool vert = mHasVerticalScrollbar;
|
|
PRBool horiz = mHasHorizontalScrollbar;
|
|
|
|
// reset everyting
|
|
mHasVerticalScrollbar = PR_FALSE;
|
|
mHasHorizontalScrollbar = PR_FALSE;
|
|
|
|
if (aReflowState.mStyleDisplay->mOverflow == NS_STYLE_OVERFLOW_SCROLL)
|
|
{
|
|
vert = PR_TRUE;
|
|
horiz = PR_TRUE;
|
|
}
|
|
|
|
// add in the scrollbars.
|
|
if (horiz)
|
|
AddHorizontalScrollbar(aSbSize, aScrollAreaSize);
|
|
|
|
if (vert)
|
|
AddVerticalScrollbar(aSbSize, aScrollAreaSize);
|
|
|
|
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Calculate the total amount of space needed for the child frame,
|
|
// including its child frames that stick outside its bounds and any
|
|
// absolutely positioned child frames.
|
|
// Updates the width/height members of the reflow metrics
|
|
nsresult
|
|
nsGfxScrollFrameInner::CalculateChildTotalSize(nsIFrame* aKidFrame,
|
|
nsHTMLReflowMetrics& aKidReflowMetrics)
|
|
{
|
|
// If the frame has child frames that stick outside its bounds, then take
|
|
// them into account, too
|
|
nsFrameState kidState;
|
|
aKidFrame->GetFrameState(&kidState);
|
|
if (NS_FRAME_OUTSIDE_CHILDREN & kidState) {
|
|
aKidReflowMetrics.width = aKidReflowMetrics.mCombinedArea.width;
|
|
aKidReflowMetrics.height = aKidReflowMetrics.mCombinedArea.height;
|
|
}
|
|
|
|
// If it's an area frame, then get the total size which includes the
|
|
// space taken up by absolutely positioned child elements
|
|
nsIAreaFrame* areaFrame;
|
|
if (NS_SUCCEEDED(aKidFrame->QueryInterface(kAreaFrameIID, (void**)&areaFrame))) {
|
|
nscoord xMost, yMost;
|
|
|
|
areaFrame->GetPositionedInfo(xMost, yMost);
|
|
if (xMost > aKidReflowMetrics.width) {
|
|
aKidReflowMetrics.width = xMost;
|
|
}
|
|
if (yMost > aKidReflowMetrics.height) {
|
|
aKidReflowMetrics.height = yMost;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsGfxScrollFrameInner::SetScrollbarVisibility(nsIFrame* aScrollbar, PRBool aVisible)
|
|
{
|
|
nsString oldStyle = "";
|
|
nsCOMPtr<nsIContent> child;
|
|
aScrollbar->GetContent(getter_AddRefs(child));
|
|
child->GetAttribute(kNameSpaceID_None, nsHTMLAtoms::value, oldStyle);
|
|
|
|
nsString newStyle;
|
|
if (aVisible)
|
|
newStyle = "";
|
|
else
|
|
newStyle = "hidden";
|
|
|
|
if (oldStyle != newStyle)
|
|
child->SetAttribute(kNameSpaceID_None, nsHTMLAtoms::value, newStyle, PR_TRUE);
|
|
}
|
|
|
|
/**
|
|
* Determine which of our children need reflow. It also return the child that is being
|
|
* incrementally reflowed if there is one.
|
|
*/
|
|
void
|
|
nsGfxScrollFrameInner::DetermineReflowNeed(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
PRBool& aHscrollbarNeedsReflow,
|
|
PRBool& aVscrollbarNeedsReflow,
|
|
PRBool& aScrollAreaNeedsReflow,
|
|
nsIFrame*& aIncrementalChild)
|
|
{
|
|
nsIFrame* targetFrame;
|
|
|
|
// Special handling for incremental reflow
|
|
if (eReflowReason_Incremental == aReflowState.reason) {
|
|
// See whether we're the target of the reflow command
|
|
aReflowState.reflowCommand->GetTarget(targetFrame);
|
|
if (mOuter == targetFrame) {
|
|
nsIReflowCommand::ReflowType type;
|
|
|
|
// The only type of reflow command we expect to get is a style
|
|
// change reflow command
|
|
aReflowState.reflowCommand->GetType(type);
|
|
NS_ASSERTION(nsIReflowCommand::StyleChanged == type, "unexpected reflow type");
|
|
|
|
// Make a copy of the reflow state (with a different reflow reason) and
|
|
// then recurse
|
|
nsHTMLReflowState reflowState(aReflowState);
|
|
reflowState.reason = eReflowReason_StyleChange;
|
|
reflowState.reflowCommand = nsnull;
|
|
mOuter->Reflow(aPresContext, aDesiredSize, reflowState, aStatus);
|
|
}
|
|
|
|
// Get the next frame in the reflow chain this will be one of the scrollbars.
|
|
aReflowState.reflowCommand->GetNext(aIncrementalChild);
|
|
|
|
// see which scrollbar it is and signal that is needs reflow
|
|
if (aIncrementalChild == mHScrollbarFrame)
|
|
aHscrollbarNeedsReflow = PR_TRUE;
|
|
else if (aIncrementalChild == mVScrollbarFrame)
|
|
aVscrollbarNeedsReflow = PR_TRUE;
|
|
else if (aIncrementalChild == mScrollAreaFrame)
|
|
aScrollAreaNeedsReflow = PR_TRUE;
|
|
|
|
} else {
|
|
// if not incremental reflow then reflow everyone one.
|
|
aHscrollbarNeedsReflow = PR_TRUE;
|
|
aVscrollbarNeedsReflow = PR_TRUE;
|
|
aScrollAreaNeedsReflow = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Reflows the visible scrollbars to fit in our content area. If the scrollbars change size
|
|
* Signal that the content area needs to be reflowed to accomidate the new size. This can
|
|
* happend if a css rule like :hover causes the scrollbar to get bigger.
|
|
*/
|
|
void
|
|
nsGfxScrollFrameInner::ReflowScrollbars( nsIPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
PRBool& aHscrollbarNeedsReflow,
|
|
PRBool& aVscrollbarNeedsReflow,
|
|
PRBool& aScrollBarResized,
|
|
nsIFrame*& aIncrementalChild)
|
|
{
|
|
// if we have gfx scrollbars reflow them. If they changed size then signal that
|
|
// we need to reflow the content area. This could happen if there is a style rule set
|
|
// up on them that changed there size. Like an image on the thumb gets big.
|
|
if (aHscrollbarNeedsReflow)
|
|
{
|
|
ReflowScrollbar(aPresContext,
|
|
aReflowState,
|
|
aStatus,
|
|
aScrollBarResized,
|
|
mHScrollbarFrame,
|
|
aIncrementalChild);
|
|
|
|
if (aScrollBarResized)
|
|
aVscrollbarNeedsReflow = PR_TRUE;
|
|
|
|
}
|
|
|
|
if (aVscrollbarNeedsReflow)
|
|
{
|
|
ReflowScrollbar(aPresContext,
|
|
aReflowState,
|
|
aStatus,
|
|
aScrollBarResized,
|
|
mVScrollbarFrame,
|
|
aIncrementalChild);
|
|
if (aScrollBarResized)
|
|
aHscrollbarNeedsReflow = PR_TRUE;
|
|
|
|
}
|
|
|
|
SetScrollbarVisibility(mHScrollbarFrame, mHasHorizontalScrollbar);
|
|
SetScrollbarVisibility(mVScrollbarFrame, mHasVerticalScrollbar);
|
|
}
|
|
|
|
void
|
|
nsGfxScrollFrameInner::ReflowScrollbar( nsIPresContext* aPresContext,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
PRBool& aScrollbarResized,
|
|
nsIFrame* aScrollbarFrame,
|
|
nsIFrame*& aIncrementalChild)
|
|
{
|
|
nsSize scrollArea;
|
|
GetFrameSize(mScrollAreaFrame, scrollArea);
|
|
|
|
// is it the horizontal scrollbar?
|
|
if (aScrollbarFrame == mHScrollbarFrame) {
|
|
|
|
// get the width to layout in
|
|
nscoord width = scrollArea.width;
|
|
|
|
nsHTMLReflowMetrics desiredSize(nsnull);
|
|
|
|
// reflow the frame
|
|
ReflowFrame(aPresContext, desiredSize, aReflowState, aStatus, mHScrollbarFrame,
|
|
nsSize(NS_INTRINSICSIZE, NS_INTRINSICSIZE),
|
|
nsSize(width, NS_INTRINSICSIZE),
|
|
aScrollbarResized,
|
|
aIncrementalChild);
|
|
|
|
} else if (aScrollbarFrame == mVScrollbarFrame) {
|
|
// is it the vertical scrollbar?
|
|
|
|
// get the height to layout in
|
|
nscoord height = scrollArea.height;
|
|
|
|
nsHTMLReflowMetrics desiredSize(nsnull);
|
|
|
|
// reflow the frame
|
|
ReflowFrame(aPresContext, desiredSize, aReflowState, aStatus, mVScrollbarFrame,
|
|
nsSize(NS_INTRINSICSIZE, NS_INTRINSICSIZE),
|
|
nsSize(NS_INTRINSICSIZE, height),
|
|
aScrollbarResized,
|
|
aIncrementalChild);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
void
|
|
nsGfxScrollFrameInner::AddRemoveScrollbar(PRBool& aHasScrollbar, nscoord& aSize, nscoord aSbSize, PRBool aAdd)
|
|
{
|
|
if ((aAdd && aHasScrollbar) || (!aAdd && !aHasScrollbar))
|
|
return;
|
|
|
|
nscoord size = aSize;
|
|
|
|
if (size != NS_INTRINSICSIZE) {
|
|
if (aAdd)
|
|
size -= aSbSize;
|
|
else
|
|
size += aSbSize;
|
|
}
|
|
|
|
// not enough room? If not don't do anything.
|
|
if (size >= aSbSize) {
|
|
aHasScrollbar = aAdd;
|
|
aSize = size;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsGfxScrollFrameInner::AddHorizontalScrollbar(const nsSize& aSbSize, nsSize& aScrollAreaSize)
|
|
{
|
|
AddRemoveScrollbar(mHasHorizontalScrollbar, aScrollAreaSize.height, aSbSize.height, PR_TRUE);
|
|
}
|
|
|
|
void
|
|
nsGfxScrollFrameInner::AddVerticalScrollbar(const nsSize& aSbSize, nsSize& aScrollAreaSize)
|
|
{
|
|
AddRemoveScrollbar(mHasVerticalScrollbar, aScrollAreaSize.width, aSbSize.width, PR_TRUE);
|
|
}
|
|
|
|
void
|
|
nsGfxScrollFrameInner::RemoveHorizontalScrollbar(const nsSize& aSbSize, nsSize& aScrollAreaSize)
|
|
{
|
|
AddRemoveScrollbar(mHasHorizontalScrollbar, aScrollAreaSize.height, aSbSize.height, PR_FALSE);
|
|
}
|
|
|
|
void
|
|
nsGfxScrollFrameInner::RemoveVerticalScrollbar(const nsSize& aSbSize, nsSize& aScrollAreaSize)
|
|
{
|
|
AddRemoveScrollbar(mHasVerticalScrollbar, aScrollAreaSize.width, aSbSize.width, PR_FALSE);
|
|
}
|
|
|
|
/**
|
|
* Give a computed and available sizes flows the child at that size.
|
|
* This is special because it takes into account margin and borderpadding.
|
|
* It also tells us if the child changed size or not.
|
|
* And finally it will handle the incremental reflow for us. If it reflowed the
|
|
* incrementalChild it will set it to nsnull
|
|
*/
|
|
nsresult
|
|
nsGfxScrollFrameInner::ReflowFrame( nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
nsIFrame* aFrame,
|
|
const nsSize& aAvailable,
|
|
const nsSize& aComputed,
|
|
PRBool& aResized,
|
|
nsIFrame*& aIncrementalChild)
|
|
{
|
|
// get the current size
|
|
nsSize oldSize;
|
|
GetFrameSize(aFrame, oldSize);
|
|
|
|
aDesiredSize.width = 0;
|
|
aDesiredSize.height = 0;
|
|
|
|
nsHTMLReflowState childReflowState(aPresContext, aReflowState,
|
|
aFrame, aAvailable);
|
|
|
|
// handle incremental reflow
|
|
if (aReflowState.reason == eReflowReason_Incremental) {
|
|
if (aFrame == aIncrementalChild)
|
|
aIncrementalChild = nsnull;
|
|
else
|
|
childReflowState.reason = eReflowReason_Resize;
|
|
}
|
|
|
|
childReflowState.mComputedWidth = aComputed.width;
|
|
childReflowState.mComputedHeight = aComputed.height;
|
|
|
|
// subtract out the childs margin and border if computed
|
|
const nsStyleSpacing* spacing;
|
|
nsresult rv = aFrame->GetStyleData(eStyleStruct_Spacing,
|
|
(const nsStyleStruct*&) spacing);
|
|
|
|
NS_ASSERTION(NS_SUCCEEDED(rv), "failed to get spacing");
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// this basically sucks. Sometime it fails to get the border and padding
|
|
// because one or the other is not set. So we are forced to go out and get
|
|
// the border and padding separately and add them together.
|
|
/*
|
|
nsMargin border;
|
|
if (!spacing->GetBorderPadding(border)) {
|
|
if (!spacing->GetBorder(border))
|
|
border.SizeTo(0,0,0,0);
|
|
|
|
|
|
border += padding;
|
|
}
|
|
*/
|
|
|
|
nsMargin margin(0,0,0,0);
|
|
spacing->GetMargin(margin);
|
|
|
|
/*
|
|
if (aFrame == mScrollAreaFrame) {
|
|
childReflowState.mComputedBorderPadding -= childReflowState.mComputedPadding;
|
|
childReflowState.mComputedPadding = nsMargin(0,0,0,0);
|
|
}
|
|
|
|
if (childReflowState.mComputedWidth != NS_INTRINSICSIZE)
|
|
childReflowState.mComputedWidth -= childReflowState.mComputedBorderPadding.left + childReflowState.mComputedBorderPadding.right;
|
|
|
|
if (childReflowState.mComputedHeight != NS_INTRINSICSIZE)
|
|
childReflowState.mComputedHeight -= childReflowState.mComputedBorderPadding.top + childReflowState.mComputedBorderPadding.bottom;
|
|
*/
|
|
|
|
mOuter->ReflowChild(aFrame, aPresContext, aDesiredSize, childReflowState,
|
|
0, 0, NS_FRAME_NO_MOVE_FRAME, aStatus);
|
|
NS_ASSERTION(NS_FRAME_IS_COMPLETE(aStatus), "bad status");
|
|
|
|
// if the frame size change then mark the flag
|
|
if (oldSize.width != aDesiredSize.width || oldSize.height != aDesiredSize.height) {
|
|
aFrame->SizeTo(aPresContext, aDesiredSize.width, aDesiredSize.height);
|
|
aResized = PR_TRUE;
|
|
}
|
|
aFrame->DidReflow(aPresContext, NS_FRAME_REFLOW_FINISHED);
|
|
|
|
// add the margin back in
|
|
aDesiredSize.width += margin.left + margin.right;
|
|
aDesiredSize.height += margin.top + margin.bottom;
|
|
|
|
return NS_OK;
|
|
}
|
|
/**
|
|
* Reflow the scroll area if it needs it and return its size. Also determine if the reflow will
|
|
* cause any of the scrollbars to need to be reflowed.
|
|
*/
|
|
void
|
|
nsGfxScrollFrameInner::ReflowScrollArea( nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus,
|
|
PRBool& aHscrollbarNeedsReflow,
|
|
PRBool& aVscrollbarNeedsReflow,
|
|
PRBool& aScrollAreaNeedsReflow,
|
|
nsIFrame*& aIncrementalChild)
|
|
{
|
|
|
|
aVscrollbarNeedsReflow = PR_FALSE;
|
|
aHscrollbarNeedsReflow = PR_FALSE;
|
|
|
|
nsSize scrollAreaSize;
|
|
|
|
if (!aScrollAreaNeedsReflow) {
|
|
// if we don't need to reflow the content area then just use its old size.
|
|
GetFrameSize(mScrollAreaFrame, scrollAreaSize);
|
|
} else {
|
|
|
|
// get the current scrollarea size
|
|
nsSize oldScrollAreaSize;
|
|
|
|
GetFrameSize(mScrollAreaFrame, oldScrollAreaSize);
|
|
|
|
// get the width of the vertical scrollbar and the height of the horizontal scrollbar
|
|
nsSize sbSize;
|
|
GetScrollbarDimensions(aPresContext, sbSize);
|
|
|
|
// Compute the scroll area size (area inside of the border edge and inside
|
|
// of any vertical and horizontal scrollbars)
|
|
nsHTMLReflowMetrics scrollAreaDesiredSize(aDesiredSize.maxElementSize);
|
|
|
|
CalculateScrollAreaSize(aPresContext, aReflowState, sbSize,
|
|
scrollAreaSize);
|
|
|
|
|
|
// -------- flow the scroll area -----------
|
|
nsSize scrollAreaReflowSize(scrollAreaSize.width, scrollAreaSize.height);
|
|
|
|
PRBool resized = PR_FALSE;
|
|
ReflowFrame(aPresContext, scrollAreaDesiredSize, aReflowState, aStatus, mScrollAreaFrame,
|
|
scrollAreaReflowSize,
|
|
scrollAreaReflowSize,
|
|
resized,
|
|
aIncrementalChild);
|
|
|
|
// make sure we take into account any children outside our bounds
|
|
CalculateChildTotalSize(mScrollAreaFrame, scrollAreaDesiredSize);
|
|
|
|
|
|
// its possible that we will have to do this twice. Its a special case
|
|
// when a the scrollarea is exactly the same height as its content but
|
|
// the contents width is greater. We will need a horizontal scrollbar
|
|
// but the size of the scrollbar will cause the scrollarea to be shorter
|
|
// than the content. So we will need a vertical scrollbar. But that could
|
|
// require us to squeeze the content. So we would have to reflow. Basically
|
|
// we have to start over. Thats why this loop is here.
|
|
for (int i=0; i < 1; i++) {
|
|
|
|
// if we are shrink wrapping the height.
|
|
if (NS_INTRINSICSIZE == scrollAreaSize.height) {
|
|
// the view port become the size that child requested.
|
|
scrollAreaSize.height = scrollAreaDesiredSize.height;
|
|
|
|
// if we were auto and have a vertical scrollbar remove it because we
|
|
// can have whatever size we wanted.
|
|
if (aReflowState.mStyleDisplay->mOverflow != NS_STYLE_OVERFLOW_SCROLL) {
|
|
RemoveVerticalScrollbar(sbSize, scrollAreaSize);
|
|
}
|
|
} else {
|
|
// if we are not shrink wrapping
|
|
|
|
// if we have 'auto' scrollbars
|
|
if (aReflowState.mStyleDisplay->mOverflow != NS_STYLE_OVERFLOW_SCROLL) {
|
|
// get the ara frame is the scrollarea
|
|
nsSize size;
|
|
GetScrolledContentSize(size);
|
|
|
|
PRBool mustReflow = PR_FALSE;
|
|
|
|
// There are two cases to consider
|
|
if (size.height <= scrollAreaSize.height) {
|
|
if (mHasVerticalScrollbar) {
|
|
// We left room for the vertical scrollbar, but it's not needed;
|
|
// remove it.
|
|
RemoveVerticalScrollbar(sbSize, scrollAreaSize);
|
|
mustReflow = PR_TRUE;
|
|
}
|
|
} else {
|
|
if (!mHasVerticalScrollbar) {
|
|
// We didn't leave room for the vertical scrollbar, but it turns
|
|
// out we needed it
|
|
AddVerticalScrollbar(sbSize, scrollAreaSize);
|
|
mustReflow = PR_TRUE;
|
|
aVscrollbarNeedsReflow = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
// Go ahead and reflow the child a second time if we added or removed the scrollbar
|
|
if (mustReflow) {
|
|
scrollAreaReflowSize.SizeTo(scrollAreaSize.width, scrollAreaSize.height);
|
|
|
|
resized = PR_FALSE;
|
|
|
|
ReflowFrame(aPresContext, scrollAreaDesiredSize, aReflowState, aStatus, mScrollAreaFrame,
|
|
scrollAreaReflowSize,
|
|
scrollAreaReflowSize,
|
|
resized,
|
|
aIncrementalChild);
|
|
|
|
CalculateChildTotalSize(mScrollAreaFrame, scrollAreaDesiredSize);
|
|
|
|
//scrollAreaSize.height = scrollAreaDesiredSize.height;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// if we are shrink wrapping the scroll area height becomes whatever the child wanted
|
|
if (NS_INTRINSICSIZE == scrollAreaSize.width) {
|
|
scrollAreaSize.width = scrollAreaDesiredSize.width;
|
|
|
|
// if we have auto scrollbars the remove the horizontal scrollbar
|
|
if (aReflowState.mStyleDisplay->mOverflow != NS_STYLE_OVERFLOW_SCROLL) {
|
|
RemoveHorizontalScrollbar(sbSize, scrollAreaSize);
|
|
}
|
|
} else {
|
|
// if scrollbars are auto
|
|
if ((NS_STYLE_OVERFLOW_SCROLL != aReflowState.mStyleDisplay->mOverflow))
|
|
{
|
|
// get the ara frame is the scrollarea
|
|
nsSize size;
|
|
GetScrolledContentSize(size);
|
|
|
|
// if the child is wider that the scroll area
|
|
// and we don't have a scrollbar add one.
|
|
if (size.width > scrollAreaSize.width) {
|
|
|
|
if (!mHasHorizontalScrollbar) {
|
|
AddHorizontalScrollbar(sbSize, scrollAreaSize);
|
|
|
|
// if we added a horizonal scrollbar and we did not have a vertical
|
|
// there is a chance that by adding the horizonal scrollbar we will
|
|
// suddenly need a vertical scrollbar. Is a special case but its
|
|
// important.
|
|
if (!mHasVerticalScrollbar && size.height > scrollAreaSize.height - sbSize.height)
|
|
continue;
|
|
}
|
|
} else {
|
|
// if the area is smaller or equal to and we have a scrollbar then
|
|
// remove it.
|
|
RemoveHorizontalScrollbar(sbSize, scrollAreaSize);
|
|
}
|
|
}
|
|
}
|
|
|
|
// always break out of the loop. Only continue if another scrollbar was added.
|
|
break;
|
|
}
|
|
|
|
|
|
// if the scroll area changed size
|
|
if (oldScrollAreaSize != scrollAreaSize)
|
|
{
|
|
// if the scroll area changed height then signal for reflow of the vertical scrollbar
|
|
if (oldScrollAreaSize.height != scrollAreaSize.height)
|
|
aVscrollbarNeedsReflow = PR_TRUE;
|
|
|
|
// if the scroll area changed width then signal for reflow of the horizontal scrollbar
|
|
if (oldScrollAreaSize.width != scrollAreaSize.width)
|
|
aHscrollbarNeedsReflow = PR_TRUE;
|
|
}
|
|
|
|
nsSize size;
|
|
GetScrolledContentSize(size);
|
|
|
|
float p2t;
|
|
aPresContext->GetScaledPixelsToTwips(&p2t);
|
|
mOnePixel = NSIntPixelsToTwips(1, p2t);
|
|
const nsStyleFont* font;
|
|
mOuter->GetStyleData(eStyleStruct_Font, (const nsStyleStruct*&) font);
|
|
const nsFont& f = font->mFont;
|
|
nsCOMPtr<nsIFontMetrics> fm;
|
|
aPresContext->GetMetricsFor(f, getter_AddRefs(fm));
|
|
nscoord fontHeight = 1;
|
|
fm->GetHeight(fontHeight);
|
|
|
|
//nscoord curX = GetIntegerAttribute(mHScrollbarFrame, nsXULAtoms::curpos, 0);
|
|
//nscoord curY = GetIntegerAttribute(mVScrollbarFrame, nsXULAtoms::curpos, 0);
|
|
nscoord maxX = size.width - scrollAreaSize.width;
|
|
nscoord maxY = size.height - scrollAreaSize.height;
|
|
|
|
//if (curX > maxX)
|
|
// curX = maxX;
|
|
|
|
//if (curY > maxY)
|
|
// curY = maxY;
|
|
|
|
//SetAttribute(mVScrollbarFrame, nsXULAtoms::curpos, curY);
|
|
//SetAttribute(mHScrollbarFrame, nsXULAtoms::curpos, curX);
|
|
SetAttribute(mVScrollbarFrame, nsXULAtoms::maxpos, maxY);
|
|
SetAttribute(mHScrollbarFrame, nsXULAtoms::maxpos, maxX);
|
|
SetAttribute(mVScrollbarFrame, nsXULAtoms::pageincrement, nscoord(float(scrollAreaSize.height)*0.8));
|
|
SetAttribute(mHScrollbarFrame, nsXULAtoms::pageincrement, nscoord(float(scrollAreaSize.width)*0.8));
|
|
|
|
SetAttribute(mVScrollbarFrame, nsXULAtoms::increment, fontHeight);
|
|
nsIScrollableView* scrollable = GetScrollableView(aPresContext);
|
|
scrollable->SetLineHeight(fontHeight);
|
|
|
|
SetAttribute(mHScrollbarFrame, nsXULAtoms::increment, 10*mOnePixel);
|
|
|
|
// size the scroll area
|
|
// even if it is different from the old size. This is because ReflowFrame set the child's
|
|
// frame so we have to make sure our final size is scrollAreaSize
|
|
|
|
SetFrameSize(aPresContext, mScrollAreaFrame, scrollAreaSize);
|
|
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Places the scrollbars and scrollarea and returns the overall size
|
|
*/
|
|
void
|
|
nsGfxScrollFrameInner::LayoutChildren(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState)
|
|
{
|
|
nsSize scrollAreaSize;
|
|
GetFrameSize(mScrollAreaFrame, scrollAreaSize);
|
|
|
|
nsSize sbSize;
|
|
GetScrollbarDimensions(aPresContext, sbSize);
|
|
|
|
// only move by the border not the padding. The padding will end up on our child instead
|
|
const nsMargin& border = aReflowState.mComputedBorderPadding;
|
|
|
|
// Place scroll area
|
|
nsIView* view;
|
|
mScrollAreaFrame->MoveTo(aPresContext, border.left, border.top);
|
|
mScrollAreaFrame->GetView(aPresContext, &view);
|
|
if (view) {
|
|
nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, mScrollAreaFrame,
|
|
view, nsnull);
|
|
}
|
|
|
|
// place vertical scrollbar
|
|
mVScrollbarFrame->MoveTo(aPresContext, border.left + scrollAreaSize.width, border.top);
|
|
mVScrollbarFrame->GetView(aPresContext, &view);
|
|
if (view) {
|
|
nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, mVScrollbarFrame,
|
|
view, nsnull);
|
|
}
|
|
|
|
// place horizontal scrollbar
|
|
mHScrollbarFrame->MoveTo(aPresContext, border.left, border.top + scrollAreaSize.height);
|
|
mHScrollbarFrame->GetView(aPresContext, &view);
|
|
if (view) {
|
|
nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, mHScrollbarFrame,
|
|
view, nsnull);
|
|
}
|
|
|
|
// Compute our desired size
|
|
// ---------- compute width -----------
|
|
aDesiredSize.width = scrollAreaSize.width;
|
|
|
|
// add border
|
|
aDesiredSize.width += border.left + border.right;
|
|
|
|
// add scrollbar
|
|
if (mHasVerticalScrollbar)
|
|
aDesiredSize.width += sbSize.width;
|
|
|
|
// ---------- compute height -----------
|
|
|
|
/*
|
|
// For the height if we're shrink wrapping then use whatever is smaller between
|
|
// the available height and the child's desired size; otherwise, use the scroll
|
|
// area size
|
|
if (NS_AUTOHEIGHT == aReflowState.mComputedHeight) {
|
|
aDesiredSize.height = PR_MIN(aReflowState.availableHeight, scrollAreaSize.height);
|
|
} else {
|
|
*/
|
|
|
|
aDesiredSize.height = scrollAreaSize.height;
|
|
//}
|
|
|
|
// add the scrollbar in
|
|
if (mHasHorizontalScrollbar)
|
|
aDesiredSize.height += sbSize.height;
|
|
|
|
// add in our border
|
|
aDesiredSize.height += border.top + border.bottom;
|
|
|
|
|
|
aDesiredSize.ascent = aDesiredSize.height;
|
|
aDesiredSize.descent = 0;
|
|
|
|
// ------- set up max size -------
|
|
if (nsnull != aDesiredSize.maxElementSize) {
|
|
nscoord maxWidth = aDesiredSize.maxElementSize->width;
|
|
maxWidth += aReflowState.mComputedBorderPadding.left + aReflowState.mComputedBorderPadding.right + sbSize.width;
|
|
nscoord maxHeight = aDesiredSize.maxElementSize->height;
|
|
maxHeight += aReflowState.mComputedBorderPadding.top + aReflowState.mComputedBorderPadding.bottom;
|
|
aDesiredSize.maxElementSize->width = maxWidth;
|
|
aDesiredSize.maxElementSize->height = maxHeight;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsGfxScrollFrameInner::ScrollbarChanged(nsIPresContext* aPresContext, nscoord aX, nscoord aY)
|
|
{
|
|
nsIScrollableView* scrollable = GetScrollableView(aPresContext);
|
|
scrollable->ScrollTo(aX,aY, NS_SCROLL_PROPERTY_ALWAYS_BLIT);
|
|
// printf("scrolling to: %d, %d\n", aX, aY);
|
|
}
|
|
|
|
nsGfxScrollFrameInner::~nsGfxScrollFrameInner()
|
|
{
|
|
if (mDocument) {
|
|
mDocument->RemoveObserver(this);
|
|
mDocument = nsnull;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsGfxScrollFrameInner::SetAttribute(nsIFrame* aFrame, nsIAtom* aAtom, nscoord aSize)
|
|
{
|
|
// convert to pixels
|
|
aSize /= mOnePixel;
|
|
|
|
|
|
// only set the attribute if it changed.
|
|
|
|
PRInt32 current = GetIntegerAttribute(aFrame, aAtom, -1);
|
|
if (current != aSize)
|
|
{
|
|
nsCOMPtr<nsIContent> content;
|
|
aFrame->GetContent(getter_AddRefs(content));
|
|
char ch[100];
|
|
sprintf(ch,"%d", aSize);
|
|
nsString newValue(ch);
|
|
content->SetAttribute(kNameSpaceID_None, aAtom, newValue, PR_TRUE);
|
|
}
|
|
}
|
|
|
|
PRInt32
|
|
nsGfxScrollFrameInner::GetIntegerAttribute(nsIFrame* aFrame, nsIAtom* atom, PRInt32 defaultValue)
|
|
{
|
|
nsCOMPtr<nsIContent> content;
|
|
aFrame->GetContent(getter_AddRefs(content));
|
|
|
|
nsString value;
|
|
if (NS_CONTENT_ATTR_HAS_VALUE == content->GetAttribute(kNameSpaceID_None, atom, value))
|
|
{
|
|
PRInt32 error;
|
|
|
|
// convert it to an integer
|
|
defaultValue = value.ToInteger(&error);
|
|
}
|
|
|
|
return defaultValue;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsGfxScrollFrame::GetBoxInfo(nsIPresContext* aPresContext, const nsHTMLReflowState& aReflowState, nsBoxInfo& aSize)
|
|
{
|
|
aSize.Clear();
|
|
|
|
nsresult rv;
|
|
nsBoxInfo scrollAreaInfo, vboxInfo, hboxInfo;
|
|
nsIBox* ibox = nsnull;
|
|
rv = mInner->mScrollAreaFrame->QueryInterface(nsIBox::GetIID(), (void**)&ibox);
|
|
ibox->GetBoxInfo(aPresContext, aReflowState, scrollAreaInfo);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv),"Scrollarea must implement box!!");
|
|
|
|
if (mInner->mHasVerticalScrollbar) {
|
|
ibox = nsnull;
|
|
mInner->mVScrollbarFrame->QueryInterface(nsIBox::GetIID(), (void**)&ibox);
|
|
ibox->GetBoxInfo(aPresContext, aReflowState, vboxInfo);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv),"Scrollarea must implement box!!");
|
|
}
|
|
|
|
if (mInner->mHasHorizontalScrollbar) {
|
|
ibox = nsnull;
|
|
mInner->mHScrollbarFrame->QueryInterface(nsIBox::GetIID(), (void**)&ibox);
|
|
ibox->GetBoxInfo(aPresContext, aReflowState, hboxInfo);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv),"Scrollarea must implement box!!");
|
|
}
|
|
|
|
aSize.prefSize.width += scrollAreaInfo.prefSize.width + vboxInfo.prefSize.width;
|
|
aSize.prefSize.height += scrollAreaInfo.prefSize.height + hboxInfo.prefSize.height;
|
|
|
|
aSize.minSize.width += vboxInfo.minSize.width;
|
|
aSize.minSize.height += hboxInfo.minSize.height;
|
|
|
|
if (scrollAreaInfo.maxSize.width != NS_INTRINSICSIZE &&
|
|
vboxInfo.maxSize.width != NS_INTRINSICSIZE &&
|
|
hboxInfo.maxSize.width != NS_INTRINSICSIZE)
|
|
{
|
|
aSize.maxSize.width += scrollAreaInfo.maxSize.width + vboxInfo.maxSize.width + hboxInfo.maxSize.width;
|
|
}
|
|
|
|
if (scrollAreaInfo.maxSize.height != NS_INTRINSICSIZE &&
|
|
vboxInfo.maxSize.height != NS_INTRINSICSIZE &&
|
|
hboxInfo.maxSize.height != NS_INTRINSICSIZE)
|
|
{
|
|
aSize.maxSize.height += scrollAreaInfo.maxSize.height + vboxInfo.maxSize.height + hboxInfo.maxSize.height;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/*
|
|
void
|
|
nsBoxFrame::GetRedefinedMinPrefMax(nsIFrame* aFrame, nsBoxInfo& aSize)
|
|
{
|
|
// add in the css min, max, pref
|
|
const nsStylePosition* position;
|
|
nsresult rv = aFrame->GetStyleData(eStyleStruct_Position,
|
|
(const nsStyleStruct*&) position);
|
|
|
|
// see if the width or height was specifically set
|
|
if (position->mWidth.GetUnit() == eStyleUnit_Coord) {
|
|
aSize.prefSize.width = position->mWidth.GetCoordValue();
|
|
}
|
|
|
|
if (position->mHeight.GetUnit() == eStyleUnit_Coord) {
|
|
aSize.prefSize.height = position->mHeight.GetCoordValue();
|
|
}
|
|
|
|
// same for min size. Unfortunately min size is always set to 0. So for now
|
|
// we will assume 0 means not set.
|
|
if (position->mMinWidth.GetUnit() == eStyleUnit_Coord) {
|
|
nscoord min = position->mMinWidth.GetCoordValue();
|
|
if (min != 0)
|
|
aSize.minSize.width = min;
|
|
}
|
|
|
|
if (position->mMinHeight.GetUnit() == eStyleUnit_Coord) {
|
|
nscoord min = position->mMinHeight.GetCoordValue();
|
|
if (min != 0)
|
|
aSize.minSize.height = min;
|
|
}
|
|
|
|
// and max
|
|
if (position->mMaxWidth.GetUnit() == eStyleUnit_Coord) {
|
|
nscoord max = position->mMaxWidth.GetCoordValue();
|
|
aSize.maxSize.width = max;
|
|
}
|
|
|
|
if (position->mMaxHeight.GetUnit() == eStyleUnit_Coord) {
|
|
nscoord max = position->mMaxHeight.GetCoordValue();
|
|
aSize.maxSize.height = max;
|
|
}
|
|
|
|
// get the flexibility
|
|
nsCOMPtr<nsIContent> content;
|
|
aFrame->GetContent(getter_AddRefs(content));
|
|
|
|
PRInt32 error;
|
|
nsString value;
|
|
|
|
if (NS_CONTENT_ATTR_HAS_VALUE == content->GetAttribute(kNameSpaceID_None, nsXULAtoms::flex, value))
|
|
{
|
|
value.Trim("%");
|
|
// convert to a percent.
|
|
aSize.flex = value.ToFloat(&error)/float(100.0);
|
|
}
|
|
}
|
|
*/
|
|
|
|
NS_IMETHODIMP
|
|
nsGfxScrollFrame::Dirty(nsIPresContext* aPresContext, const nsHTMLReflowState& aReflowState, nsIFrame*& incrementalChild)
|
|
{
|
|
incrementalChild = nsnull;
|
|
nsresult rv = NS_OK;
|
|
|
|
// Dirty any children that need it.
|
|
nsIFrame* frame;
|
|
aReflowState.reflowCommand->GetNext(frame);
|
|
|
|
nscoord count = 0;
|
|
nsIFrame* childFrame = mFrames.FirstChild();
|
|
while (nsnull != childFrame)
|
|
{
|
|
if (childFrame == frame) {
|
|
if (frame == mInner->mVScrollbarFrame)
|
|
mInner->mVscrollbarNeedsReflow = PR_TRUE;
|
|
else if (frame == mInner->mHScrollbarFrame)
|
|
mInner->mHscrollbarNeedsReflow = PR_TRUE;
|
|
else if (frame == mInner->mScrollAreaFrame)
|
|
mInner->mScrollAreaNeedsReflow = PR_TRUE;
|
|
|
|
nsIBox* ibox = nsnull;
|
|
rv = childFrame->QueryInterface(nsIBox::GetIID(), (void**)&ibox);
|
|
NS_ASSERTION(NS_SUCCEEDED(rv),"We have a child that is not a box!!!!");
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
ibox->Dirty(aPresContext, aReflowState, incrementalChild);
|
|
break;
|
|
}
|
|
|
|
rv = childFrame->GetNextSibling(&childFrame);
|
|
NS_ASSERTION(rv == NS_OK,"failed to get next child");
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
count++;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsGfxScrollFrameInner::GetContentOf(nsIFrame* aFrame, nsIContent** aContent)
|
|
{
|
|
// If we don't have a content node find a parent that does.
|
|
while(aFrame != nsnull) {
|
|
aFrame->GetContent(aContent);
|
|
if (*aContent != nsnull)
|
|
return NS_OK;
|
|
|
|
aFrame->GetParent(&aFrame);
|
|
}
|
|
|
|
NS_ERROR("Can't find a parent with a content node");
|
|
return NS_OK;
|
|
}
|
|
|