content/browser/android/composited_touch_handle_drawable.h

   1 // Copyright 2014 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 CONTENT_BROWSER_ANDROID_COMPOSITED_TOUCH_HANDLE_DRAWABLE_H_
   6 #define CONTENT_BROWSER_ANDROID_COMPOSITED_TOUCH_HANDLE_DRAWABLE_H_
   7
   8 #include "ui/touch_selection/touch_handle.h"
   9
  10 #include "base/android/jni_android.h"
  11 #include "cc/layers/ui_resource_layer.h"
  12
  13 namespace content {
  14
  15 // Touch handle drawable implementation backed by a cc layer.
  16 class CompositedTouchHandleDrawable : public ui::TouchHandleDrawable {
  17  public:
  18   CompositedTouchHandleDrawable(cc::Layer* root_layer,
  19                                 float dpi_scale,
  20                                 jobject context);
  21   ~CompositedTouchHandleDrawable() override;
  22
  23   // ui::TouchHandleDrawable implementation.
  24   void SetEnabled(bool enabled) override;
  25   void SetOrientation(ui::TouchHandleOrientation orientation) override;
  26   void SetAlpha(float alpha) override;
  27   void SetFocus(const gfx::PointF& position) override;
  28   gfx::RectF GetVisibleBounds() const override;
  29
  30   static bool RegisterHandleViewResources(JNIEnv* env);
  31
  32  private:
  33   void DetachLayer();
  34   void UpdateLayerPosition();
  35
  36   const float dpi_scale_;
  37   ui::TouchHandleOrientation orientation_;
  38   gfx::PointF focal_position_;
  39   gfx::Vector2dF focal_offset_from_origin_;
  40   scoped_refptr<cc::UIResourceLayer> layer_;
  41
  42   DISALLOW_COPY_AND_ASSIGN(CompositedTouchHandleDrawable);
  43 };
  44
  45 }  // namespace content
  46
  47 #endif  // CONTENT_BROWSER_ANDROID_COMPOSITED_TOUCH_HANDLE_DRAWABLE_H_