blimp: Add support for input handling

blimp/client/android/blimp_view.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_ANDROID_BLIMP_VIEW_H_
 #define BLIMP_CLIENT_ANDROID_BLIMP_VIEW_H_
 
 #include "base/android/jni_android.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
+#include "ui/events/gesture_detection/filtered_gesture_provider.h"
 
 namespace gfx {
 class Size;
 }
 
 namespace blimp {
 
 class BlimpCompositorAndroid;
 
 // The native component of org.chromium.blimp.BlimpView.  This builds and
 // maintains a BlimpCompositorAndroid and handles notifying the compositor of
 // SurfaceView surface changes (size, creation, destruction, etc.).
-class BlimpView {
+class BlimpView : public ui::GestureProviderClient {
  public:
   static bool RegisterJni(JNIEnv* env);
 
   // |real_size| is the total display area including system decorations (see
   // android.view.Display.getRealSize()).  |size| is the total display
   // area not including system decorations (see android.view.Display.getSize()).
   // |dp_to_px| is the scale factor that is required to convert dp (device
   // pixels) to px.
   BlimpView(JNIEnv* env,
             const base::android::JavaParamRef<jobject>& jobj,
             const gfx::Size& real_size,
             const gfx::Size& size,
             float dp_to_px);
 
   // Methods called from Java via JNI.
   void Destroy(JNIEnv* env, jobject jobj);
   void SetNeedsComposite(JNIEnv* env, jobject jobj);
   void OnSurfaceChanged(JNIEnv* env,
                         jobject jobj,
                         jint format,
                         jint width,
                         jint height,
                         jobject jsurface);
   void OnSurfaceCreated(JNIEnv* env, jobject jobj);
   void OnSurfaceDestroyed(JNIEnv* env, jobject jobj);
   void SetVisibility(JNIEnv* env, jobject jobj, jboolean visible);
+  jboolean OnTouchEvent(JNIEnv* env,
+                        jobject obj,
+                        jobject motion_event,
+                        jlong time_ms,
+                        jint android_action,
+                        jint pointer_count,
+                        jint history_size,
+                        jint action_index,
+                        jfloat pos_x_0,
+                        jfloat pos_y_0,
+                        jfloat pos_x_1,
+                        jfloat pos_y_1,
+                        jint pointer_id_0,
+                        jint pointer_id_1,
+                        jfloat touch_major_0,
+                        jfloat touch_major_1,
+                        jfloat touch_minor_0,
+                        jfloat touch_minor_1,
+                        jfloat orientation_0,
+                        jfloat orientation_1,
+                        jfloat raw_pos_x,
+                        jfloat raw_pos_y,
+                        jint android_tool_type_0,
+                        jint android_tool_type_1,
+                        jint android_button_state,
+                        jint android_meta_state);
+
+  // ui::GestureProviderClient implementation.
+  void OnGestureEvent(const ui::GestureEventData& gesture) override;
 
  private:
   virtual ~BlimpView();
 
   // Reference to the Java object which owns this class.
   base::android::ScopedJavaGlobalRef<jobject> java_obj_;
 
+  float device_scale_factor_;

[David Trainor- moved to gerrit, 2015/11/02 16:55:30]

const?

[Khushal, 2015/12/01 08:22:25]

Done.

+
   scoped_ptr<BlimpCompositorAndroid> compositor_;
 
+  // Provides gesture synthesis given a stream of touch events (derived from
+  // Android MotionEvent's) and touch event acks.
+  ui::FilteredGestureProvider gesture_provider_;
+
   // The format of the current surface owned by |compositor_|.  See
   // android.graphics.PixelFormat.java.
   int current_surface_format_;
 
   DISALLOW_COPY_AND_ASSIGN(BlimpView);
 };
 
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_ANDROID_BLIMP_VIEW_H_