зеркало из https://github.com/mozilla/gecko-dev.git
181 строка
7.3 KiB
C++
181 строка
7.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public
|
|
* License Version 1.1 (the "License"); you may not use this file
|
|
* except in compliance with the License. You may obtain a copy of
|
|
* the License at http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS
|
|
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
|
* implied. See the License for the specific language governing
|
|
* rights and limitations under the License.
|
|
*
|
|
* The Original Code is Mozilla Communicator client code.
|
|
*
|
|
* The Initial Developer of the Original Code is Netscape Communications
|
|
* Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*/
|
|
#ifndef nsGfxScrollFrame_h___
|
|
#define nsGfxScrollFrame_h___
|
|
|
|
#include "nsHTMLContainerFrame.h"
|
|
#include "nsIAnonymousContentCreator.h"
|
|
#include "nsBoxFrame.h"
|
|
#include "nsIScrollableFrame.h"
|
|
|
|
class nsISupportsArray;
|
|
class nsGfxScrollFrameInner;
|
|
|
|
/**
|
|
* The scroll frame creates and manages the scrolling view
|
|
*
|
|
* It only supports having a single child frame that typically is an area
|
|
* frame, but doesn't have to be. The child frame must have a view, though
|
|
*
|
|
* Scroll frames don't support incremental changes, i.e. you can't replace
|
|
* or remove the scrolled frame
|
|
*/
|
|
class nsGfxScrollFrame : public nsIAnonymousContentCreator,
|
|
public nsBoxFrame,
|
|
public nsIScrollableFrame {
|
|
public:
|
|
friend nsresult NS_NewGfxScrollFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame,
|
|
nsIDocument* aDocument, PRBool aIsRoot);
|
|
|
|
NS_IMETHOD Init(nsIPresContext* aPresContext,
|
|
nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsIStyleContext* aContext,
|
|
nsIFrame* aPrevInFlow);
|
|
|
|
virtual ~nsGfxScrollFrame();
|
|
|
|
|
|
// Called to set the one and only child frame. Returns NS_ERROR_INVALID_ARG
|
|
// if the child frame is NULL, and NS_ERROR_UNEXPECTED if the child list
|
|
// contains more than one frame
|
|
NS_IMETHOD SetInitialChildList(nsIPresContext* aPresContext,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aChildList);
|
|
|
|
NS_IMETHOD Reflow(nsIPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
// Because there can be only one child frame, these two function return
|
|
// NS_ERROR_FAILURE
|
|
NS_IMETHOD AppendFrames(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aFrameList);
|
|
NS_IMETHOD InsertFrames(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aPrevFrame,
|
|
nsIFrame* aFrameList);
|
|
|
|
NS_IMETHOD ReplaceFrame(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aOldFrame,
|
|
nsIFrame* aNewFrame);
|
|
|
|
NS_IMETHOD Destroy(nsIPresContext* aPresContext);
|
|
|
|
// This function returns NS_ERROR_NOT_IMPLEMENTED
|
|
NS_IMETHOD RemoveFrame(nsIPresContext* aPresContext,
|
|
nsIPresShell& aPresShell,
|
|
nsIAtom* aListName,
|
|
nsIFrame* aOldFrame);
|
|
|
|
|
|
NS_IMETHOD Paint(nsIPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer);
|
|
|
|
NS_IMETHOD GetContentAndOffsetsFromPoint(nsIPresContext* aCX,
|
|
const nsPoint& aPoint,
|
|
nsIContent ** aNewContent,
|
|
PRInt32& aContentOffset,
|
|
PRInt32& aContentOffsetEnd,
|
|
PRBool& aBeginFrameContent);
|
|
|
|
// nsIAnonymousContentCreator
|
|
NS_IMETHOD CreateAnonymousContent(nsIPresContext* aPresContext,
|
|
nsISupportsArray& aAnonymousItems);
|
|
NS_IMETHOD SetDocumentForAnonymousContent(nsIDocument* aDocument,
|
|
PRBool aDeep,
|
|
PRBool aCompileEventHandlers);
|
|
NS_IMETHOD CreateFrameFor(nsIPresContext* aPresContext,
|
|
nsIContent * aContent,
|
|
nsIFrame** aFrame) { if (aFrame) *aFrame = nsnull; return NS_ERROR_FAILURE; }
|
|
|
|
// nsIBox methods
|
|
NS_DECL_ISUPPORTS
|
|
|
|
NS_IMETHOD GetPrefSize(nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
|
|
NS_IMETHOD GetMinSize(nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
|
|
NS_IMETHOD GetMaxSize(nsBoxLayoutState& aBoxLayoutState, nsSize& aSize);
|
|
NS_IMETHOD GetAscent(nsBoxLayoutState& aBoxLayoutState, nscoord& aAscent);
|
|
|
|
NS_IMETHOD DoLayout(nsBoxLayoutState& aBoxLayoutState);
|
|
NS_IMETHOD GetPadding(nsMargin& aPadding);
|
|
|
|
// nsIScrollableFrame
|
|
NS_IMETHOD SetScrolledFrame(nsIPresContext* aPresContext, nsIFrame *aScrolledFrame);
|
|
NS_IMETHOD GetScrolledFrame(nsIPresContext* aPresContext, nsIFrame *&aScrolledFrame) const;
|
|
NS_IMETHOD GetScrollbarVisibility(nsIPresContext* aPresContext,
|
|
PRBool *aVerticalVisible,
|
|
PRBool *aHorizontalVisible) const;
|
|
NS_IMETHOD GetScrollableView(nsIPresContext* aContext, nsIScrollableView** aResult);
|
|
|
|
NS_IMETHOD GetScrollPosition(nsIPresContext* aContext, nscoord &aX, nscoord& aY) const;
|
|
NS_IMETHOD ScrollTo(nsIPresContext* aContext, nscoord aX, nscoord aY, PRUint32 aFlags);
|
|
|
|
NS_IMETHOD SetScrollbarVisibility(nsIPresContext* aPresContext,
|
|
PRBool aVerticalVisible,
|
|
PRBool aHorizontalVisible);
|
|
|
|
NS_IMETHOD GetScrollbarBox(PRBool aVertical, nsIBox** aResult);
|
|
|
|
NS_IMETHOD GetClipSize(nsIPresContext* aPresContext,
|
|
nscoord *aWidth,
|
|
nscoord *aHeight) const;
|
|
|
|
NS_IMETHOD GetScrollPreference(nsIPresContext* aPresContext, nsScrollPref* aScrollPreference) const;
|
|
|
|
NS_IMETHOD GetScrollbarSizes(nsIPresContext* aPresContext,
|
|
nscoord *aVbarWidth,
|
|
nscoord *aHbarHeight) const;
|
|
|
|
/**
|
|
* Get the "type" of the frame
|
|
*
|
|
* @see nsLayoutAtoms::scrollFrame
|
|
*/
|
|
NS_IMETHOD GetFrameType(nsIAtom** aType) const;
|
|
|
|
#ifdef NS_DEBUG
|
|
NS_IMETHOD GetFrameName(nsString& aResult) const;
|
|
#endif
|
|
|
|
virtual nsresult GetContentOf(nsIContent** aContent);
|
|
|
|
protected:
|
|
nsGfxScrollFrame(nsIPresShell* aShell, nsIDocument* aDocument, PRBool aIsRoot);
|
|
virtual PRIntn GetSkipSides() const;
|
|
|
|
private:
|
|
friend class nsGfxScrollFrameInner;
|
|
nsGfxScrollFrameInner* mInner;
|
|
nsIPresContext* mPresContext; // weak reference
|
|
};
|
|
|
|
#endif /* nsScrollFrame_h___ */
|