gfx/2d/QuartzSupport.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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 _CGLContextObject;
  24
  25 enum AllowOfflineRendererEnum {
  26   ALLOW_OFFLINE_RENDERER,
  27   DISALLOW_OFFLINE_RENDERER
  28 };
  29
  30 class nsCARenderer : public mozilla::RefCounted<nsCARenderer> {
  31  public:
  32   MOZ_DECLARE_REFCOUNTED_TYPENAME(nsCARenderer)
  33   nsCARenderer()
  34       : mCARenderer(nullptr),
  35         mWrapperCALayer(nullptr),
  36         mFBOTexture(0),
  37         mOpenGLContext(nullptr),
  38         mCGImage(nullptr),
  39         mCGData(nullptr),
  40         mIOSurface(nullptr),
  41         mFBO(0),
  42         mIOTexture(0),
  43         mUnsupportedWidth(UINT32_MAX),
  44         mUnsupportedHeight(UINT32_MAX),
  45         mAllowOfflineRenderer(DISALLOW_OFFLINE_RENDERER),
  46         mContentsScaleFactor(1.0) {}
  47   ~nsCARenderer();
  48   // aWidth and aHeight are in "display pixels".  A "display pixel" is the
  49   // smallest fully addressable part of a display.  But in HiDPI modes each
  50   // "display pixel" corresponds to more than one device pixel.  Multiply
  51   // display pixels by aContentsScaleFactor to get device pixels.
  52   nsresult SetupRenderer(void* aCALayer, int aWidth, int aHeight,
  53                          double aContentsScaleFactor,
  54                          AllowOfflineRendererEnum aAllowOfflineRenderer);
  55   // aWidth and aHeight are in "display pixels".  Multiply by
  56   // aContentsScaleFactor to get device pixels.
  57   nsresult Render(int aWidth, int aHeight, double aContentsScaleFactor,
  58                   CGImageRef* aOutCAImage);
  59   bool isInit() { return mCARenderer != nullptr; }
  60   /*
  61    * Render the CALayer to an IOSurface. If no IOSurface
  62    * is attached then an internal pixel buffer will be
  63    * used.
  64    */
  65   void AttachIOSurface(MacIOSurface* aSurface);
  66   IOSurfaceID GetIOSurfaceID();
  67   // aX, aY, aWidth and aHeight are in "display pixels".  Multiply by
  68   // surf->GetContentsScaleFactor() to get device pixels.
  69   static nsresult DrawSurfaceToCGContext(CGContextRef aContext,
  70                                          MacIOSurface* surf,
  71                                          CGColorSpaceRef aColorSpace, int aX,
  72                                          int aY, size_t aWidth, size_t aHeight);
  73
  74   // Remove & Add the layer without destroying
  75   // the renderer for fast back buffer swapping.
  76   void DetachCALayer();
  77   void AttachCALayer(void* aCALayer);
  78 #  ifdef DEBUG
  79   static void SaveToDisk(MacIOSurface* surf);
  80 #  endif
  81  private:
  82   // aWidth and aHeight are in "display pixels".  Multiply by
  83   // mContentsScaleFactor to get device pixels.
  84   void SetBounds(int aWidth, int aHeight);
  85   // aWidth and aHeight are in "display pixels".  Multiply by
  86   // mContentsScaleFactor to get device pixels.
  87   void SetViewport(int aWidth, int aHeight);
  88   void Destroy();
  89
  90   void* mCARenderer;
  91   void* mWrapperCALayer;
  92   GLuint mFBOTexture;
  93   _CGLContextObject* mOpenGLContext;
  94   CGImageRef mCGImage;
  95   void* mCGData;
  96   RefPtr<MacIOSurface> mIOSurface;
  97   uint32_t mFBO;
  98   uint32_t mIOTexture;
  99   int mUnsupportedWidth;
 100   int mUnsupportedHeight;
 101   AllowOfflineRendererEnum mAllowOfflineRenderer;
 102   double mContentsScaleFactor;
 103 };
 104
 105 #endif  // XP_MACOSX
 106 #endif  // nsCoreAnimationSupport_h__