Mozilla/mozilla/layout/generic/nsGfxScrollFrame.h
evaughan%netscape.com a268db39c4 1) implememted box reflow coelescing.
2) implemented gfx scrollbars for list boxes
3) fixed progess meter to be an animated gif
4) fixed bugs 23521, 24721, 19114, 20546, 24385, 24457, 23156, 20226, 22543

-r hyatt, troy, rod


git-svn-id: svn://10.0.0.236/trunk@60253 18797224-902f-48f8-a5cc-f745e15eee43
2000-02-09 22:02:40 +00:00

150 lines
5.8 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 nsScrollFrame_h___
#define nsScrollFrame_h___
#include "nsHTMLContainerFrame.h"
#include "nsIAnonymousContentCreator.h"
#include "nsIBox.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 nsHTMLContainerFrame,
public nsIAnonymousContentCreator,
public nsIBox,
public nsIScrollableFrame {
public:
friend nsresult NS_NewGfxScrollFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame,
nsIDocument* aDocument);
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);
// 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 Destroy(nsIPresContext* aPresContext);
// This function returns NS_ERROR_NOT_IMPLEMENTED
NS_IMETHOD RemoveFrame(nsIPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aOldFrame);
NS_IMETHOD DidReflow(nsIPresContext* aPresContext,
nsDidReflowStatus aStatus);
NS_IMETHOD Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
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);
NS_IMETHOD ReflowDirtyChild(nsIPresShell* aPresShell, nsIFrame* aChild);
// nsIAnonymousContentCreator
NS_IMETHOD CreateAnonymousContent(nsIPresContext* aPresContext,
nsISupportsArray& aAnonymousItems);
// nsIBox methods
NS_IMETHOD GetBoxInfo(nsIPresContext* aPresContext, const nsHTMLReflowState& aReflowState, nsBoxInfo& aSize);
NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
NS_IMETHOD_(nsrefcnt) AddRef(void) { return NS_OK; }
NS_IMETHOD_(nsrefcnt) Release(void) { return NS_OK; }
NS_IMETHOD InvalidateCache(nsIFrame* aChild);
// 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 GetClipSize(nsIPresContext* aPresContext,
nscoord *aWidth,
nscoord *aHeight) 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
protected:
nsGfxScrollFrame(nsIDocument* aDocument);
virtual PRIntn GetSkipSides() const;
private:
friend class nsGfxScrollFrameInner;
nsGfxScrollFrameInner* mInner;
nsIPresContext* mPresContext; // weak reference
};
#endif /* nsScrollFrame_h___ */