зеркало из https://github.com/mozilla/gecko-dev.git
121 строка
4.3 KiB
C++
121 строка
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
/*
|
|
* rendering object that is the root of the frame tree, which contains
|
|
* the document's scrollbars and contains fixed-positioned elements
|
|
*/
|
|
|
|
#ifndef nsViewportFrame_h___
|
|
#define nsViewportFrame_h___
|
|
|
|
#include "nsContainerFrame.h"
|
|
#include "nsGkAtoms.h"
|
|
|
|
class nsPresContext;
|
|
|
|
/**
|
|
* ViewportFrame is the parent of a single child - the doc root frame or a scroll frame
|
|
* containing the doc root frame. ViewportFrame stores this child in its primary child
|
|
* list.
|
|
*/
|
|
class ViewportFrame : public nsContainerFrame {
|
|
public:
|
|
NS_DECL_FRAMEARENA_HELPERS
|
|
|
|
typedef nsContainerFrame Super;
|
|
|
|
ViewportFrame(nsStyleContext* aContext)
|
|
: nsContainerFrame(aContext)
|
|
{}
|
|
virtual ~ViewportFrame() { } // useful for debugging
|
|
|
|
virtual void DestroyFrom(nsIFrame* aDestructRoot);
|
|
|
|
NS_IMETHOD Init(nsIContent* aContent,
|
|
nsIFrame* aParent,
|
|
nsIFrame* asPrevInFlow);
|
|
|
|
NS_IMETHOD SetInitialChildList(ChildListID aListID,
|
|
nsFrameList& aChildList);
|
|
|
|
NS_IMETHOD AppendFrames(ChildListID aListID,
|
|
nsFrameList& aFrameList);
|
|
|
|
NS_IMETHOD InsertFrames(ChildListID aListID,
|
|
nsIFrame* aPrevFrame,
|
|
nsFrameList& aFrameList);
|
|
|
|
NS_IMETHOD RemoveFrame(ChildListID aListID,
|
|
nsIFrame* aOldFrame);
|
|
|
|
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aDirtyRect,
|
|
const nsDisplayListSet& aLists);
|
|
|
|
virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext);
|
|
virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext);
|
|
NS_IMETHOD Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
/**
|
|
* Get the "type" of the frame
|
|
*
|
|
* @see nsGkAtoms::viewportFrame
|
|
*/
|
|
virtual nsIAtom* GetType() const;
|
|
|
|
virtual void InvalidateInternal(const nsRect& aDamageRect,
|
|
nscoord aX, nscoord aY, nsIFrame* aForChild,
|
|
PRUint32 aFlags);
|
|
|
|
#ifdef DEBUG
|
|
NS_IMETHOD GetFrameName(nsAString& aResult) const;
|
|
#endif
|
|
|
|
private:
|
|
virtual mozilla::layout::FrameChildListID GetAbsoluteListID() const { return kFixedList; }
|
|
|
|
protected:
|
|
nsPoint AdjustReflowStateForScrollbars(nsHTMLReflowState* aReflowState) const;
|
|
};
|
|
|
|
|
|
#endif // nsViewportFrame_h___
|