Back to index

lightning-sunbird  0.9+nobinonly
nsViewportFrame.h
Go to the documentation of this file.
00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either of the GNU General Public License Version 2 or later (the "GPL"),
00026  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 #ifndef nsViewportFrame_h___
00038 #define nsViewportFrame_h___
00039 
00040 #include "nsContainerFrame.h"
00041 #include "nsLayoutAtoms.h"
00042 #include "nsPresContext.h"
00043 #include "nsReflowPath.h"
00044 #include "nsIPresShell.h"
00045 #include "nsAbsoluteContainingBlock.h"
00046 
00047 class nsFixedContainingBlock : public nsAbsoluteContainingBlock {
00048 public:
00049   nsFixedContainingBlock() { }          // useful for debugging
00050 
00051   virtual ~nsFixedContainingBlock() { } // useful for debugging
00052 
00053   virtual nsIAtom* GetChildListName() const { return nsLayoutAtoms::fixedList; }
00054 };
00055 
00062 class ViewportFrame : public nsContainerFrame {
00063 public:
00064   ViewportFrame() { }          // useful for debugging
00065 
00066   virtual ~ViewportFrame() { } // useful for debugging
00067 
00068   NS_IMETHOD Destroy(nsPresContext* aPresContext);
00069 
00070   NS_IMETHOD SetInitialChildList(nsPresContext* aPresContext,
00071                                  nsIAtom*        aListName,
00072                                  nsIFrame*       aChildList);
00073 
00074   NS_IMETHOD GetFrameForPoint(const nsPoint&    aPoint, 
00075                               nsFramePaintLayer aWhichLayer,
00076                               nsIFrame**        aFrame);
00077 
00078   NS_IMETHOD AppendFrames(nsIAtom*        aListName,
00079                           nsIFrame*       aFrameList);
00080 
00081   NS_IMETHOD InsertFrames(nsIAtom*        aListName,
00082                           nsIFrame*       aPrevFrame,
00083                           nsIFrame*       aFrameList);
00084 
00085   NS_IMETHOD RemoveFrame(nsIAtom*        aListName,
00086                          nsIFrame*       aOldFrame);
00087 
00088   virtual nsIAtom* GetAdditionalChildListName(PRInt32 aIndex) const;
00089 
00090   virtual nsIFrame* GetFirstChild(nsIAtom* aListName) const;
00091 
00092   NS_IMETHOD Reflow(nsPresContext*          aPresContext,
00093                     nsHTMLReflowMetrics&     aDesiredSize,
00094                     const nsHTMLReflowState& aReflowState,
00095                     nsReflowStatus&          aStatus);
00096 
00097   virtual PRBool CanPaintBackground() { return PR_FALSE; }
00098   
00104   virtual nsIAtom* GetType() const;
00105   
00106   virtual PRBool IsContainingBlock() const;
00107 
00108 #ifdef DEBUG
00109   NS_IMETHOD GetFrameName(nsAString& aResult) const;
00110 #endif
00111 
00112 protected:
00113   nsPoint AdjustReflowStateForScrollbars(nsHTMLReflowState* aReflowState) const;
00114 
00115 protected:
00116   nsFixedContainingBlock mFixedContainer;
00117 };
00118 
00119 
00120 #endif // nsViewportFrame_h___