The Tor Browser: dom/plugins/ipc/PluginUtilsOSX.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 dom_plugins_PluginUtilsOSX_h

     8 #define dom_plugins_PluginUtilsOSX_h 1

    10 #include "npapi.h"

    11 #include "mozilla/gfx/QuartzSupport.h"

    13 struct nsIntRect;

    15 namespace mozilla {

    16 namespace plugins {

    17 namespace PluginUtilsOSX {

    19 // Need to call back into the browser's message loop to process event.

    20 typedef void (*RemoteProcessEvents) (void*);

    22 NPError ShowCocoaContextMenu(void* aMenu, int aX, int aY, void* pluginModule, RemoteProcessEvents remoteEvent);

    24 void InvokeNativeEventLoop();

    26 // Need to call back and send a cocoa draw event to the plugin.

    27 typedef void (*DrawPluginFunc) (CGContextRef, void*, nsIntRect aUpdateRect);

    29 void* GetCGLayer(DrawPluginFunc aFunc, void* aPluginInstance,

    30                  bool aAvoidCGCrashes, double aContentsScaleFactor);

    31 void ReleaseCGLayer(void* cgLayer);

    32 void Repaint(void* cgLayer, nsIntRect aRect);

    34 bool SetProcessName(const char* aProcessName);

    36 /*

    37  * Provides a wrapper around nsCARenderer to manage double buffering

    38  * without having to unbind nsCARenderer on every surface swaps.

    39  *

    40  * The double buffer renderer begins with no initialize surfaces.

    41  * The buffers can be initialized and cleared individually.

    42  * Swapping still occurs regardless if the buffers are initialized.

    43  */

    44 class nsDoubleBufferCARenderer {

    45 public:

    46   nsDoubleBufferCARenderer() : mCALayer(nullptr), mContentsScaleFactor(1.0) {}

    47   // Returns width in "display pixels".  A "display pixel" is the smallest

    48   // fully addressable part of a display.  But in HiDPI modes each "display

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

    50   // by mContentsScaleFactor to get device pixels.

    51   size_t GetFrontSurfaceWidth();

    52   // Returns height in "display pixels".  Multiply by

    53   // mContentsScaleFactor to get device pixels.

    54   size_t GetFrontSurfaceHeight();

    55   double GetFrontSurfaceContentsScaleFactor();

    56   // Returns width in "display pixels".  Multiply by

    57   // mContentsScaleFactor to get device pixels.

    58   size_t GetBackSurfaceWidth();

    59   // Returns height in "display pixels".  Multiply by

    60   // mContentsScaleFactor to get device pixels.

    61   size_t GetBackSurfaceHeight();

    62   double GetBackSurfaceContentsScaleFactor();

    63   IOSurfaceID GetFrontSurfaceID();

    65   bool HasBackSurface();

    66   bool HasFrontSurface();

    67   bool HasCALayer();

    69   void SetCALayer(void *aCALayer);

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

    71   // aContentsScaleFactor to get device pixels.

    72   bool InitFrontSurface(size_t aWidth, size_t aHeight,

    73                         double aContentsScaleFactor,

    74                         AllowOfflineRendererEnum aAllowOfflineRenderer);

    75   void Render();

    76   void SwapSurfaces();

    77   void ClearFrontSurface();

    78   void ClearBackSurface();

    80   double GetContentsScaleFactor() { return mContentsScaleFactor; }

    82 private:

    83   void *mCALayer;

    84   RefPtr<nsCARenderer> mCARenderer;

    85   RefPtr<MacIOSurface> mFrontSurface;

    86   RefPtr<MacIOSurface> mBackSurface;

    87   double mContentsScaleFactor;

    88 };

    90 } // namespace PluginUtilsOSX

    91 } // namespace plugins

    92 } // namespace mozilla

    94 #endif //dom_plugins_PluginUtilsOSX_h

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