blimp: Add support for input handling

blimp/client/android/blimp_view.cc

Index: blimp/client/android/blimp_view.cc
diff --git a/blimp/client/android/blimp_view.cc b/blimp/client/android/blimp_view.cc
index de27258a9817a49cfbc6079cfd254909538a0c66..8c97dd9dd41648b28103ccd6271353bf443f8dd4 100644
--- a/blimp/client/android/blimp_view.cc
+++ b/blimp/client/android/blimp_view.cc
@@ -6,7 +6,11 @@
 
 #include "blimp/client/compositor/blimp_compositor_android.h"
 #include "jni/BlimpView_jni.h"
+#include "ui/events/android/motion_event_android.h"
+#include "ui/events/blink/blink_event_util.h"
+#include "ui/events/gesture_detection/gesture_provider_config_helper.h"
 #include "ui/gfx/geometry/size.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
 
 namespace blimp {
 
@@ -33,7 +37,12 @@ BlimpView::BlimpView(JNIEnv* env,
                      const gfx::Size& real_size,
                      const gfx::Size& size,
                      float dp_to_px)
-    : compositor_(BlimpCompositorAndroid::Create(real_size, size, dp_to_px)),
+    : device_scale_factor_(dp_to_px),
+      compositor_(BlimpCompositorAndroid::Create(real_size, size, dp_to_px)),
+      // TODO(khushalsagar): Verify if any default configurations need to be
+      // changed.
+      gesture_provider_(ui::GetGestureProviderConfig(
+          ui::GestureProviderConfigType::CURRENT_PLATFORM), this),
       current_surface_format_(0) {
   java_obj_.Reset(env, jobj);
 }
@@ -73,4 +82,93 @@ void BlimpView::SetVisibility(JNIEnv* env, jobject jobj, jboolean visible) {
   compositor_->SetVisible(visible);
 }
 
+jboolean BlimpView::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::MotionEventAndroid::Pointer pointer0(pointer_id_0,
+                                       pos_x_0,

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

fix indentation.  Same for all other MotionEventAndroid objects below

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

Done.

+                                       pos_y_0,
+                                       touch_major_0,
+                                       touch_minor_0,
+                                       orientation_0,
+                                       android_tool_type_0);
+  ui::MotionEventAndroid::Pointer pointer1(pointer_id_1,
+                                       pos_x_1,
+                                       pos_y_1,
+                                       touch_major_1,
+                                       touch_minor_1,
+                                       orientation_1,
+                                       android_tool_type_1);
+  ui::MotionEventAndroid event(1.f / device_scale_factor_,
+                           env,
+                           motion_event,
+                           time_ms,
+                           android_action,
+                           pointer_count,
+                           history_size,
+                           action_index,
+                           android_button_state,
+                           android_meta_state,
+                           raw_pos_x - pos_x_0,
+                           raw_pos_y - pos_y_0,
+                           pointer0,
+                           pointer1);
+
+  ui::FilteredGestureProvider::TouchHandlingResult result =
+        gesture_provider_.OnTouchEvent(event);
+    if (!result.succeeded)

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

indentation

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

Moved to BlimpInputManager.

+      return false;
+
+  blink::WebTouchEvent web_event =
+      ui::CreateWebTouchEventFromMotionEvent(event, result.did_generate_scroll);
+
+  // Touch events are queued in the Gesture Provider until acknowledged to
+  // allow them to be consumed by the touch event handlers in blink which can
+  // prevent-default on the event. Since we currently do not support touch
+  // handlers the event is always acknowledged as not consumed.
+  // TODO(khushalsagar): Add support for touch events to blink.

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

s/blink/blimp?

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

Moved to BlimpInputManager.

+  gesture_provider_.OnTouchEventAck(web_event.uniqueTouchEventId, false);
+
+  return true;
+}
+
+void BlimpView::OnGestureEvent(const ui::GestureEventData& gesture) {
+  blink::WebGestureEvent web_gesture =
+        ui::CreateWebGestureEventFromGestureEventData(gesture);
+    // TODO(jdduke): Remove this workaround after Android fixes UiAutomator to
+    // stop providing shift meta values to synthetic MotionEvents. This prevents
+    // unintended shift+click interpretation of all accessibility clicks.
+    // See crbug.com/443247.
+    if (web_gesture.type == blink::WebInputEvent::GestureTap &&
+        web_gesture.modifiers == blink::WebInputEvent::ShiftKey) {
+      web_gesture.modifiers = 0;
+    }
+
+    // TODO(khushalsagar): Use the GestureEventQueue.

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

TODO: Push the event to the compositor?

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

Done. Moved to BlimpInputManager.

+}
+
 }  // namespace blimp