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nsButtonFrameRenderer.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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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 Communicator client 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"),
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00036  * ***** END LICENSE BLOCK ***** */
00037 
00043 #ifndef nsButtonFrameRenderer_h___
00044 #define nsButtonFrameRenderer_h___
00045 
00046 #include "nsCoord.h"
00047 #include "nsAutoPtr.h"
00048 #include "nsFrame.h"
00049 
00050 class nsStyleChangeList;
00051 
00052 
00053 #define NS_BUTTON_RENDERER_FOCUS_INNER_CONTEXT_INDEX  0
00054 #define NS_BUTTON_RENDERER_FOCUS_OUTER_CONTEXT_INDEX  1
00055 #define NS_BUTTON_RENDERER_LAST_CONTEXT_INDEX   NS_BUTTON_RENDERER_FOCUS_OUTER_CONTEXT_INDEX
00056 
00057 class nsButtonFrameRenderer {
00058 public:
00059 
00060          nsButtonFrameRenderer();
00061       virtual ~nsButtonFrameRenderer();
00062 
00063 
00064    // These three functions all assume a "background" layer within the
00065    // button, which is itself in the foreground layer.
00066         virtual void PaintButton(nsPresContext* aPresContext,
00067                                                    nsIRenderingContext& aRenderingContext,
00068                                                    const nsRect& aDirtyRect,
00069                                                    const nsRect& aRect);
00070 
00071         virtual void PaintOutlineAndFocusBorders(nsPresContext* aPresContext,
00072                                             nsIRenderingContext& aRenderingContext,
00073                                             const nsRect& aDirtyRect,
00074                                             const nsRect& aRect);
00075 
00076         virtual void PaintBorderAndBackground(nsPresContext* aPresContext,
00077                                             nsIRenderingContext& aRenderingContext,
00078                                             const nsRect& aDirtyRect,
00079                                             const nsRect& aRect);
00080 
00081        virtual void SetFrame(nsFrame* aFrame, nsPresContext* aPresContext);
00082  
00083        virtual void SetDisabled(PRBool aDisabled, PRBool notify);
00084 
00085        PRBool isActive();
00086        PRBool isDisabled();
00087 
00088        virtual void GetButtonOutlineRect(const nsRect& aRect, nsRect& aResult);
00089        virtual void GetButtonOuterFocusRect(const nsRect& aRect, nsRect& aResult);
00090        virtual void GetButtonRect(const nsRect& aRect, nsRect& aResult);
00091        virtual void GetButtonInnerFocusRect(const nsRect& aRect, nsRect& aResult);
00092        virtual void GetButtonContentRect(const nsRect& aRect, nsRect& aResult);
00093   virtual nsMargin GetButtonOuterFocusBorderAndPadding();
00094   virtual nsMargin GetButtonBorderAndPadding();
00095   virtual nsMargin GetButtonInnerFocusMargin();
00096   virtual nsMargin GetButtonInnerFocusBorderAndPadding();
00097   virtual nsMargin GetButtonOutlineBorderAndPadding();
00098   virtual nsMargin GetFullButtonBorderAndPadding();
00099   virtual nsMargin GetAddedButtonBorderAndPadding();
00100 
00101   virtual nsStyleContext* GetStyleContext(PRInt32 aIndex) const;
00102   virtual void SetStyleContext(PRInt32 aIndex, nsStyleContext* aStyleContext);
00103        virtual void ReResolveStyles(nsPresContext* aPresContext);
00104 
00105   virtual nsIFrame* GetFrame();
00106 
00107 protected:
00108 
00109 private:
00110 
00111        // cached styles for focus and outline.
00112   nsRefPtr<nsStyleContext> mBorderStyle;
00113   nsRefPtr<nsStyleContext> mInnerFocusStyle;
00114   nsRefPtr<nsStyleContext> mOuterFocusStyle;
00115 
00116        nsFrame* mFrame;
00117 
00118   nsRect mOutlineRect;
00119 };
00120 
00121 
00122 #endif
00123