gfx/src/thebes/nsThebesDeviceContext.h

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is thebes gfx
  16  *
  17  * The Initial Developer of the Original Code is
  18  * mozilla.org.
  19  * Portions created by the Initial Developer are Copyright (C) 2005
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   Vladimir Vukicevic <vladimir@pobox.com>
  24  *   Stuart Parmenter <pavlov@pavlov.net>
  25  *
  26  * Alternatively, the contents of this file may be used under the terms of
  27  * either the GNU General Public License Version 2 or later (the "GPL"), or
  28  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  29  * in which case the provisions of the GPL or the LGPL are applicable instead
  30  * of those above. If you wish to allow use of your version of this file only
  31  * under the terms of either the GPL or the LGPL, and not to allow others to
  32  * use your version of this file under the terms of the MPL, indicate your
  33  * decision by deleting the provisions above and replace them with the notice
  34  * and other provisions required by the GPL or the LGPL. If you do not delete
  35  * the provisions above, a recipient may use your version of this file under
  36  * the terms of any one of the MPL, the GPL or the LGPL.
  37  *
  38  * ***** END LICENSE BLOCK ***** */
  39
  40 #ifndef _NS_THEBESDEVICECONTEXT_H_
  41 #define _NS_THEBESDEVICECONTEXT_H_
  42
  43 #include "nsIScreenManager.h"
  44
  45 #include "nsDeviceContext.h"
  46
  47 #include "nsRefPtrHashtable.h"
  48 #include "nsHashKeys.h"
  49
  50 #include "prlog.h"
  51
  52 #include "gfxContext.h"
  53
  54 #ifdef PR_LOGGING
  55 extern PRLogModuleInfo* gThebesGFXLog;
  56 #endif
  57
  58 #ifdef XP_WIN
  59 #include "gfxWindowsSurface.h"
  60 #elif defined(XP_OS2)
  61 #include "gfxOS2Surface.h"
  62 #endif
  63
  64 class nsThebesDeviceContext : public DeviceContextImpl
  65 {
  66 public:
  67     nsThebesDeviceContext();
  68     virtual ~nsThebesDeviceContext();
  69
  70     static void Shutdown();
  71
  72     NS_DECL_ISUPPORTS_INHERITED
  73
  74     NS_IMETHOD Init(nsNativeWidget aWidget);
  75     NS_IMETHOD InitForPrinting(nsIDeviceContextSpec *aDevSpec);
  76     NS_IMETHOD CreateRenderingContext(nsIView *aView, nsIRenderingContext *&aContext);
  77
  78     NS_IMETHOD CreateRenderingContext(nsIWidget *aWidget, nsIRenderingContext *&aContext);
  79     NS_IMETHOD CreateRenderingContext(nsIRenderingContext *&aContext);
  80     NS_IMETHOD CreateRenderingContextInstance(nsIRenderingContext *&aContext);
  81
  82     NS_IMETHOD SupportsNativeWidgets(PRBool& aSupportsWidgets);
  83     NS_IMETHOD PrepareNativeWidget(nsIWidget *aWidget, void **aOut);
  84
  85     NS_IMETHOD GetSystemFont(nsSystemFontID aID, nsFont *aFont) const;
  86     NS_IMETHOD ClearCachedSystemFonts();
  87
  88     NS_IMETHOD CheckFontExistence(const nsString& aFaceName);
  89
  90     NS_IMETHOD GetDepth(PRUint32& aDepth);
  91
  92     NS_IMETHOD GetPaletteInfo(nsPaletteInfo& aPaletteInfo);
  93
  94     NS_IMETHOD ConvertPixel(nscolor aColor, PRUint32& aPixel);
  95
  96     NS_IMETHOD GetDeviceSurfaceDimensions(PRInt32& aWidth, PRInt32& aHeight);
  97     NS_IMETHOD GetRect(nsRect& aRect);
  98     NS_IMETHOD GetClientRect(nsRect& aRect);
  99
 100     /* printing goop */
 101     NS_IMETHOD PrepareDocument(PRUnichar *aTitle,
 102                                PRUnichar *aPrintToFileName);
 103
 104     NS_IMETHOD BeginDocument(PRUnichar  *aTitle,
 105                              PRUnichar  *aPrintToFileName,
 106                              PRInt32     aStartPage,
 107                              PRInt32     aEndPage);
 108
 109     NS_IMETHOD EndDocument(void);
 110     NS_IMETHOD AbortDocument(void);
 111     NS_IMETHOD BeginPage(void);
 112     NS_IMETHOD EndPage(void);
 113     /* end printing goop */
 114
 115     static void DebugShowCairoSurface (const char *aName, cairo_surface_t *aSurface);
 116
 117     virtual PRBool CheckDPIChange();
 118
 119     virtual PRBool SetPixelScale(float aScale);
 120
 121     nsNativeWidget GetWidget() { return mWidget; }
 122 #if defined(XP_WIN) || defined(XP_OS2)
 123     HDC GetPrintHDC();
 124 #endif
 125
 126 protected:
 127     nsresult SetDPI();
 128     void ComputeClientRectUsingScreen(nsRect *outRect);
 129     void ComputeFullAreaUsingScreen(nsRect *outRect);
 130     void FindScreen(nsIScreen **outScreen);
 131     void CalcPrintingSize();
 132     void UpdateScaledAppUnits();
 133
 134     PRUint32 mDepth;
 135
 136 private:
 137     nsCOMPtr<nsIScreenManager> mScreenManager;
 138
 139     nscoord mWidth;
 140     nscoord mHeight;
 141
 142     nsRefPtrHashtable<nsISupportsHashKey, gfxASurface> mWidgetSurfaceCache;
 143
 144     nsRefPtr<gfxASurface> mPrintingSurface;
 145     float mPrintingScale;
 146     nsCOMPtr<nsIDeviceContextSpec> mDeviceContextSpec;
 147 };
 148
 149 #endif /* _NS_CAIRODEVICECONTEXT_H_ */
 150