Initial commit of the blimp/ folder and target

blimp/client/compositor/blimp_compositor_android.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BLIMP_CLIENT_COMPOSITOR_BLIMP_COMPOSITOR_ANDROID_H_
+#define BLIMP_CLIENT_COMPOSITOR_BLIMP_COMPOSITOR_ANDROID_H_
+
+#include "base/android/jni_android.h"
+#include "base/macros.h"
+#include "blimp/client/compositor/blimp_compositor.h"
+#include "ui/gfx/geometry/size.h"
+#include "ui/gfx/native_widget_types.h"
+
+namespace base {
+class SingleThreadTaskRunner;
+class Thread;
+}
+
+namespace cc {
+class LayerTreeHost;
+}
+
+namespace blimp {
+
+// An Android specific version of the BlimpCompositor.  This class builds a
+// gfx::AcceleratedWidget out of an Android SurfaceView's surface.
+class BlimpCompositorAndroid : public BlimpCompositor {
+ public:
+  // |physical_size| is the real display area that can contain content including
+  // system decorations (See android.view.Display#getRealSize()). |display_size|
+  // is the display area that may contain an application window excluding
+  // system decorations (see android.view.Display#getSize()).
+  // |device_scale_factor| is the scale factor that is required to move from dp
+  // (device independent pixels) to pixels.
+  static scoped_ptr<BlimpCompositorAndroid> Create(
+      const gfx::Size& physical_size,
+      const gfx::Size& display_size,
+      float device_scale_factor);
+
+  ~BlimpCompositorAndroid() override;
+
+  // A strong reference to the ANativeWindow backing |jsurface| will be taken
+  // here.  It will be released when the surface is replaced via another call
+  // to SetSurface or when this class dies.
+  void SetSurface(JNIEnv* env, jobject jsurface);
+
+ protected:
+  // |device_size| is the best representation of the real display area (some
+  // devices do not support it).  |real_size_supported| represents whether or
+  // not |device_size| represents the real physical size or just the content
+  // area.  |device_scale_factor| is the scale factor that is required to move
+  // from dp (device independent pixels) to pixels.
+  BlimpCompositorAndroid(const gfx::Size& device_size,
+                         bool real_size_supported,
+                         float device_scale_factor);
+
+  // BlimpCompositor implementation
+  gfx::AcceleratedWidget GetWindow() override;
+  void GenerateLayerTreeSettings(cc::LayerTreeSettings* settings,
+                                 const base::CommandLine& cmd) override;
+
+ private:
+  // These are used to determine tile size for the compositor's rastered tiles.
+  // For a device of width X height |portrait_width_| will be min(width, height)
+  // and |landscape_width_| will be max(width, height).
+  int portrait_width_;
+  int landscape_width_;
+
+  // Whether or not |portrait_width_| and |landscape_width_| represent the real
+  // size of the device (includes the system decorations) or not.
+  bool real_size_supported_;
+
+  gfx::AcceleratedWidget window_;
+
+  DISALLOW_COPY_AND_ASSIGN(BlimpCompositorAndroid);
+};
+
+}  // namespace blimp
+
+#endif  // BLIMP_CLIENT_COMPOSITOR_BLIMP_COMPOSITOR_ANDROID_H_