1 files changed, 98 insertions, 0 deletions
diff --git a/gfx/2d/QuartzSupport.h b/gfx/2d/QuartzSupport.h
new file mode 100644
index 000000000..f56fcb77c
--- /dev/null
+++ b/gfx/2d/QuartzSupport.h
@@ -0,0 +1,98 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+// vim:set ts=2 sts=2 sw=2 et cin:
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsCoreAnimationSupport_h__
+#define nsCoreAnimationSupport_h__
+#ifdef XP_MACOSX
+
+#import <OpenGL/OpenGL.h>
+#import <OpenGL/gl.h>
+#import "ApplicationServices/ApplicationServices.h"
+#include "gfxTypes.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/gfx/MacIOSurface.h"
+#include "nsError.h"
+
+// Get the system color space.
+CGColorSpaceRef CreateSystemColorSpace();
+
+// Manages a CARenderer
+struct _CGLContextObject;
+
+enum AllowOfflineRendererEnum { ALLOW_OFFLINE_RENDERER, DISALLOW_OFFLINE_RENDERER };
+
+class nsCARenderer : public mozilla::RefCounted<nsCARenderer> {
+public:
+  MOZ_DECLARE_REFCOUNTED_TYPENAME(nsCARenderer)
+  nsCARenderer() : mCARenderer(nullptr), mWrapperCALayer(nullptr), mFBOTexture(0),
+                   mOpenGLContext(nullptr), mCGImage(nullptr), mCGData(nullptr),
+                   mIOSurface(nullptr), mFBO(0), mIOTexture(0),
+                   mUnsupportedWidth(UINT32_MAX), mUnsupportedHeight(UINT32_MAX),
+                   mAllowOfflineRenderer(DISALLOW_OFFLINE_RENDERER),
+                   mContentsScaleFactor(1.0) {}
+  ~nsCARenderer();
+  // aWidth and aHeight are in "display pixels".  A "display pixel" is the
+  // smallest fully addressable part of a display.  But in HiDPI modes each
+  // "display pixel" corresponds to more than one device pixel.  Multiply
+  // display pixels by aContentsScaleFactor to get device pixels.
+  nsresult SetupRenderer(void* aCALayer, int aWidth, int aHeight,
+                         double aContentsScaleFactor,
+                         AllowOfflineRendererEnum aAllowOfflineRenderer);
+  // aWidth and aHeight are in "display pixels".  Multiply by
+  // aContentsScaleFactor to get device pixels.
+  nsresult Render(int aWidth, int aHeight,
+                  double aContentsScaleFactor,
+                  CGImageRef *aOutCAImage);
+  bool isInit() { return mCARenderer != nullptr; }
+  /*
+   * Render the CALayer to an IOSurface. If no IOSurface
+   * is attached then an internal pixel buffer will be
+   * used.
+   */
+  void AttachIOSurface(MacIOSurface *aSurface);
+  IOSurfaceID GetIOSurfaceID();
+  // aX, aY, aWidth and aHeight are in "display pixels".  Multiply by
+  // surf->GetContentsScaleFactor() to get device pixels.
+  static nsresult DrawSurfaceToCGContext(CGContextRef aContext,
+                                         MacIOSurface *surf,
+                                         CGColorSpaceRef aColorSpace,
+                                         int aX, int aY,
+                                         size_t aWidth, size_t aHeight);
+
+  // Remove & Add the layer without destroying
+  // the renderer for fast back buffer swapping.
+  void DetachCALayer();
+  void AttachCALayer(void *aCALayer);
+#ifdef DEBUG
+  static void SaveToDisk(MacIOSurface *surf);
+#endif
+private:
+  // aWidth and aHeight are in "display pixels".  Multiply by
+  // mContentsScaleFactor to get device pixels.
+  void SetBounds(int aWidth, int aHeight);
+  // aWidth and aHeight are in "display pixels".  Multiply by
+  // mContentsScaleFactor to get device pixels.
+  void SetViewport(int aWidth, int aHeight);
+  void Destroy();
+
+  void *mCARenderer;
+  void *mWrapperCALayer;
+  GLuint                    mFBOTexture;
+  _CGLContextObject        *mOpenGLContext;
+  CGImageRef                mCGImage;
+  void                     *mCGData;
+  RefPtr<MacIOSurface> mIOSurface;
+  uint32_t                  mFBO;
+  uint32_t                  mIOTexture;
+  int                       mUnsupportedWidth;
+  int                       mUnsupportedHeight;
+  AllowOfflineRendererEnum  mAllowOfflineRenderer;
+  double                    mContentsScaleFactor;
+};
+
+#endif // XP_MACOSX
+#endif // nsCoreAnimationSupport_h__
+