gfx/2d/QuartzSupport.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 // vim:set ts=2 sts=2 sw=2 et cin:
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef nsCoreAnimationSupport_h__
   8 #define nsCoreAnimationSupport_h__
   9 #ifdef XP_MACOSX
  10
  11 #import <OpenGL/OpenGL.h>
  12 #import <OpenGL/gl.h>
  13 #import "ApplicationServices/ApplicationServices.h"
  14 #include "gfxTypes.h"
  15 #include "mozilla/RefPtr.h"
  16 #include "mozilla/gfx/MacIOSurface.h"
  17 #include "nsError.h"
  18
  19 // Get the system color space.
  20 CGColorSpaceRef CreateSystemColorSpace();
  21
  22 // Manages a CARenderer
  23 struct _CGLPBufferObject;
  24 struct _CGLContextObject;
  25
  26 enum AllowOfflineRendererEnum { ALLOW_OFFLINE_RENDERER, DISALLOW_OFFLINE_RENDERER };
  27
  28 class nsCARenderer : public mozilla::RefCounted<nsCARenderer> {
  29 public:
  30   nsCARenderer() : mCARenderer(nullptr), mWrapperCALayer(nullptr), mFBOTexture(0),
  31                    mOpenGLContext(nullptr), mCGImage(nullptr), mCGData(nullptr),
  32                    mIOSurface(nullptr), mFBO(0), mIOTexture(0),
  33                    mUnsupportedWidth(UINT32_MAX), mUnsupportedHeight(UINT32_MAX),
  34                    mAllowOfflineRenderer(DISALLOW_OFFLINE_RENDERER),
  35                    mContentsScaleFactor(1.0) {}
  36   ~nsCARenderer();
  37   // aWidth and aHeight are in "display pixels".  A "display pixel" is the
  38   // smallest fully addressable part of a display.  But in HiDPI modes each
  39   // "display pixel" corresponds to more than one device pixel.  Multiply
  40   // display pixels by aContentsScaleFactor to get device pixels.
  41   nsresult SetupRenderer(void* aCALayer, int aWidth, int aHeight,
  42                          double aContentsScaleFactor,
  43                          AllowOfflineRendererEnum aAllowOfflineRenderer);
  44   // aWidth and aHeight are in "display pixels".  Multiply by
  45   // aContentsScaleFactor to get device pixels.
  46   nsresult Render(int aWidth, int aHeight,
  47                   double aContentsScaleFactor,
  48                   CGImageRef *aOutCAImage);
  49   bool isInit() { return mCARenderer != nullptr; }
  50   /*
  51    * Render the CALayer to an IOSurface. If no IOSurface
  52    * is attached then an internal pixel buffer will be
  53    * used.
  54    */
  55   void AttachIOSurface(mozilla::RefPtr<MacIOSurface> aSurface);
  56   IOSurfaceID GetIOSurfaceID();
  57   // aX, aY, aWidth and aHeight are in "display pixels".  Multiply by
  58   // surf->GetContentsScaleFactor() to get device pixels.
  59   static nsresult DrawSurfaceToCGContext(CGContextRef aContext,
  60                                          MacIOSurface *surf,
  61                                          CGColorSpaceRef aColorSpace,
  62                                          int aX, int aY,
  63                                          size_t aWidth, size_t aHeight);
  64
  65   // Remove & Add the layer without destroying
  66   // the renderer for fast back buffer swapping.
  67   void DetachCALayer();
  68   void AttachCALayer(void *aCALayer);
  69 #ifdef DEBUG
  70   static void SaveToDisk(MacIOSurface *surf);
  71 #endif
  72 private:
  73   // aWidth and aHeight are in "display pixels".  Multiply by
  74   // mContentsScaleFactor to get device pixels.
  75   void SetBounds(int aWidth, int aHeight);
  76   // aWidth and aHeight are in "display pixels".  Multiply by
  77   // mContentsScaleFactor to get device pixels.
  78   void SetViewport(int aWidth, int aHeight);
  79   void Destroy();
  80
  81   void *mCARenderer;
  82   void *mWrapperCALayer;
  83   GLuint                    mFBOTexture;
  84   _CGLContextObject        *mOpenGLContext;
  85   CGImageRef                mCGImage;
  86   void                     *mCGData;
  87   mozilla::RefPtr<MacIOSurface> mIOSurface;
  88   uint32_t                  mFBO;
  89   uint32_t                  mIOTexture;
  90   int                       mUnsupportedWidth;
  91   int                       mUnsupportedHeight;
  92   AllowOfflineRendererEnum  mAllowOfflineRenderer;
  93   double                    mContentsScaleFactor;
  94 };
  95
  96 #endif // XP_MACOSX
  97 #endif // nsCoreAnimationSupport_h__
  98