The Tor Browser: gfx/2d/QuartzSupport.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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/. */

     7 #ifndef nsCoreAnimationSupport_h__

     8 #define nsCoreAnimationSupport_h__

     9 #ifdef XP_MACOSX

    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"

    19 // Get the system color space.

    20 CGColorSpaceRef CreateSystemColorSpace();

    22 // Manages a CARenderer

    23 struct _CGLPBufferObject;

    24 struct _CGLContextObject;

    26 enum AllowOfflineRendererEnum { ALLOW_OFFLINE_RENDERER, DISALLOW_OFFLINE_RENDERER };

    28 class nsCARenderer : public mozilla::RefCounted<nsCARenderer> {

    29 public:

    30   MOZ_DECLARE_REFCOUNTED_TYPENAME(nsCARenderer)

    31   nsCARenderer() : mCARenderer(nullptr), mWrapperCALayer(nullptr), mFBOTexture(0),

    32                    mOpenGLContext(nullptr), mCGImage(nullptr), mCGData(nullptr),

    33                    mIOSurface(nullptr), mFBO(0), mIOTexture(0),

    34                    mUnsupportedWidth(UINT32_MAX), mUnsupportedHeight(UINT32_MAX),

    35                    mAllowOfflineRenderer(DISALLOW_OFFLINE_RENDERER),

    36                    mContentsScaleFactor(1.0) {}

    37   ~nsCARenderer();

    38   // aWidth and aHeight are in "display pixels".  A "display pixel" is the

    39   // smallest fully addressable part of a display.  But in HiDPI modes each

    40   // "display pixel" corresponds to more than one device pixel.  Multiply

    41   // display pixels by aContentsScaleFactor to get device pixels.

    42   nsresult SetupRenderer(void* aCALayer, int aWidth, int aHeight,

    43                          double aContentsScaleFactor,

    44                          AllowOfflineRendererEnum aAllowOfflineRenderer);

    45   // aWidth and aHeight are in "display pixels".  Multiply by

    46   // aContentsScaleFactor to get device pixels.

    47   nsresult Render(int aWidth, int aHeight,

    48                   double aContentsScaleFactor,

    49                   CGImageRef *aOutCAImage);

    50   bool isInit() { return mCARenderer != nullptr; }

    51   /*

    52    * Render the CALayer to an IOSurface. If no IOSurface

    53    * is attached then an internal pixel buffer will be

    54    * used.

    55    */

    56   void AttachIOSurface(mozilla::RefPtr<MacIOSurface> aSurface);

    57   IOSurfaceID GetIOSurfaceID();

    58   // aX, aY, aWidth and aHeight are in "display pixels".  Multiply by

    59   // surf->GetContentsScaleFactor() to get device pixels.

    60   static nsresult DrawSurfaceToCGContext(CGContextRef aContext,

    61                                          MacIOSurface *surf,

    62                                          CGColorSpaceRef aColorSpace,

    63                                          int aX, int aY,

    64                                          size_t aWidth, size_t aHeight);

    66   // Remove & Add the layer without destroying

    67   // the renderer for fast back buffer swapping.

    68   void DetachCALayer();

    69   void AttachCALayer(void *aCALayer);

    70 #ifdef DEBUG

    71   static void SaveToDisk(MacIOSurface *surf);

    72 #endif

    73 private:

    74   // aWidth and aHeight are in "display pixels".  Multiply by

    75   // mContentsScaleFactor to get device pixels.

    76   void SetBounds(int aWidth, int aHeight);

    77   // aWidth and aHeight are in "display pixels".  Multiply by

    78   // mContentsScaleFactor to get device pixels.

    79   void SetViewport(int aWidth, int aHeight);

    80   void Destroy();

    82   void *mCARenderer;

    83   void *mWrapperCALayer;

    84   GLuint                    mFBOTexture;

    85   _CGLContextObject        *mOpenGLContext;

    86   CGImageRef                mCGImage;

    87   void                     *mCGData;

    88   mozilla::RefPtr<MacIOSurface> mIOSurface;

    89   uint32_t                  mFBO;

    90   uint32_t                  mIOTexture;

    91   int                       mUnsupportedWidth;

    92   int                       mUnsupportedHeight;

    93   AllowOfflineRendererEnum  mAllowOfflineRenderer;

    94   double                    mContentsScaleFactor;

    95 };

    97 #endif // XP_MACOSX

    98 #endif // nsCoreAnimationSupport_h__

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