blimp/client/compositor/blimp_compositor_android.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef BLIMP_CLIENT_COMPOSITOR_BLIMP_COMPOSITOR_ANDROID_H_
   6 #define BLIMP_CLIENT_COMPOSITOR_BLIMP_COMPOSITOR_ANDROID_H_
   7
   8 #include "base/android/jni_android.h"
   9 #include "base/macros.h"
  10 #include "blimp/client/compositor/blimp_compositor.h"
  11 #include "ui/gfx/geometry/size.h"
  12 #include "ui/gfx/native_widget_types.h"
  13
  14 namespace base {
  15 class SingleThreadTaskRunner;
  16 class Thread;
  17 }
  18
  19 namespace cc {
  20 class LayerTreeHost;
  21 }
  22
  23 namespace blimp {
  24
  25 // An Android specific version of the BlimpCompositor.  This class builds a
  26 // gfx::AcceleratedWidget out of an Android SurfaceView's surface.
  27 class BlimpCompositorAndroid : public BlimpCompositor {
  28  public:
  29   // |real_size| is the total display area including system decorations (see
  30   // android.view.Display.getRealSize()).  |size| is the total display
  31   // area not including system decorations (see android.view.Display.getSize()).
  32   // |dp_to_px| is the scale factor that is required to convert from dp device
  33   // pixels) to px.
  34   static scoped_ptr<BlimpCompositorAndroid> Create(const gfx::Size& real_size,
  35                                                    const gfx::Size& size,
  36                                                    float dp_to_px);
  37
  38   ~BlimpCompositorAndroid() override;
  39
  40   // Takes a reference to the ANativeWindow backing |jsurface|, to use to render
  41   // to, and releases any previously-held reference.
  42   void SetSurface(JNIEnv* env, jobject jsurface);
  43
  44  protected:
  45   // |size| is the size of the display.  |real_size_supported| determines
  46   // whether or not this size is the real display size or the display size
  47   // not including the system decorations.  |dp_to_px| is the scale factor that
  48   // is required to convert from dp (device pixels) to px.
  49   BlimpCompositorAndroid(const gfx::Size& size,
  50                          bool real_size_supported,
  51                          float dp_to_px);
  52
  53   // BlimpCompositor implementation.
  54   gfx::AcceleratedWidget GetWindow() override;
  55   void GenerateLayerTreeSettings(cc::LayerTreeSettings* settings);
  56
  57  private:
  58   // Used to determine tile size for the compositor's rastered tiles. For a
  59   // device of width X height |portrait_width_| will be min(width, height) and
  60   // |landscape_width_| will be max(width, height).
  61   int portrait_width_;
  62   int landscape_width_;
  63
  64   // True if the |portrait_width_| and |landscape_width_| represent the device's
  65   // physical dimensions, including any area occupied by system decorations.
  66   bool real_size_supported_;
  67
  68   gfx::AcceleratedWidget window_;
  69
  70   DISALLOW_COPY_AND_ASSIGN(BlimpCompositorAndroid);
  71 };
  72
  73 }  // namespace blimp
  74
  75 #endif  // BLIMP_CLIENT_COMPOSITOR_BLIMP_COMPOSITOR_ANDROID_H_