SyntheticGestureTarget implementation for injecting synthetic input events

content/browser/renderer_host/render_widget_host_view_android.cc

 // Copyright (c) 2012 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 
 #include <android/bitmap.h>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 14 matching lines @@
 #include "cc/trees/layer_tree_host.h"
 #include "content/browser/accessibility/browser_accessibility_manager_android.h"
 #include "content/browser/android/content_view_core_impl.h"
 #include "content/browser/android/in_process/synchronous_compositor_impl.h"
 #include "content/browser/android/overscroll_glow.h"
 #include "content/browser/gpu/gpu_surface_tracker.h"
 #include "content/browser/renderer_host/compositor_impl_android.h"
 #include "content/browser/renderer_host/dip_util.h"
 #include "content/browser/renderer_host/generic_touch_gesture_android.h"
 #include "content/browser/renderer_host/image_transport_factory_android.h"
+#include "content/browser/renderer_host/input/touch_scroll_smooth_gesture.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
+#include "content/browser/renderer_host/synthetic_touch_event_android.h"
 #include "content/common/gpu/client/gl_helper.h"
 #include "content/common/gpu/gpu_messages.h"
+#include "content/common/input/input_event.h"
 #include "content/common/input_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/common/content_switches.h"
 #include "skia/ext/image_operations.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "third_party/khronos/GLES2/gl2.h"
 #include "third_party/khronos/GLES2/gl2ext.h"
 #include "ui/gfx/android/device_display_info.h"
 #include "ui/gfx/android/java_bitmap.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/screen.h"
 #include "ui/gfx/size_conversions.h"
 
+using WebKit::WebInputEvent;
+using WebKit::WebTouchEvent;
+
 namespace content {
 
 namespace {
 
 const int kUndefinedOutputSurfaceId = -1;
 const int kMinimumPointerDistance = 50;
 
 void InsertSyncPointAndAckForGpu(
     int gpu_host_id, int route_id, const std::string& return_mailbox) {
   uint32 sync_point =
@@ skipping 541 matching lines @@
 }
 
 void RenderWidgetHostViewAndroid::ShowDisambiguationPopup(
     const gfx::Rect& target_rect, const SkBitmap& zoomed_bitmap) {
   if (!content_view_core_)
     return;
 
   content_view_core_->ShowDisambiguationPopup(target_rect, zoomed_bitmap);
 }
 
+// FIXME: move this to RenderWidgetHostBase

[Dominik Grewe, 2013/10/10 14:01:45]

This method will actually be removed completely once the new implementation of
synthetic gestures is complete.

[kouhei (in TOK), 2013/10/15 02:10:02]

Ack. I'll remove this in commit CL.

 SyntheticGesture* RenderWidgetHostViewAndroid::CreateSmoothScrollGesture(
     bool scroll_down, int pixels_to_scroll, int mouse_event_x,
     int mouse_event_y) {
-  return new GenericTouchGestureAndroid(
-      GetRenderWidgetHost(),
-      content_view_core_->CreateOnePointTouchGesture(
-          mouse_event_x, mouse_event_y,
-          0, scroll_down ? -pixels_to_scroll : pixels_to_scroll));
+  return new TouchSmoothScrollGesture(
+      scroll_down, pixels_to_scroll, mouse_event_x, mouse_event_y);
 }
 
 SyntheticGesture* RenderWidgetHostViewAndroid::CreatePinchGesture(
     bool zoom_in, int pixels_to_move, int anchor_x,
     int anchor_y) {
   int distance_between_pointers = zoom_in ?
       kMinimumPointerDistance : (kMinimumPointerDistance + pixels_to_move);
   return new GenericTouchGestureAndroid(
       GetRenderWidgetHost(),
       content_view_core_->CreateTwoPointTouchGesture(
@@ skipping 294 matching lines @@
 gfx::GLSurfaceHandle RenderWidgetHostViewAndroid::GetCompositingSurface() {
   return gfx::GLSurfaceHandle(gfx::kNullPluginWindow, gfx::TEXTURE_TRANSPORT);
 }
 
 void RenderWidgetHostViewAndroid::ProcessAckedTouchEvent(
     const TouchEventWithLatencyInfo& touch, InputEventAckState ack_result) {
   if (content_view_core_)
     content_view_core_->ConfirmTouchEvent(ack_result);
 }
 
+void RenderWidgetHostViewAndroid::QueueInputEventToPlatform(
+    const InputEvent& event) {
+  if (! synthetic_touch_event_)
+    synthetic_touch_event_.reset(
+        new SyntheticTouchEventAndroid(content_view_core_));
+
+  if (WebInputEvent::isTouchEventType(event.web_event->type)) {
+    const WebTouchEvent* web_touch =
+        static_cast<const WebTouchEvent*>(event.web_event.get());
+
+    synthetic_touch_event_->InjectWebTouchEvent(web_touch);
+  } else
+    NOTREACHED(); // FIXME: implement other types (MouseWheel?)
+}
+
 void RenderWidgetHostViewAndroid::SetHasHorizontalScrollbar(
     bool has_horizontal_scrollbar) {
   // intentionally empty, like RenderWidgetHostViewViews
 }
 
 void RenderWidgetHostViewAndroid::SetScrollOffsetPinning(
     bool is_pinned_to_left, bool is_pinned_to_right) {
   // intentionally empty, like RenderWidgetHostViewViews
 }
 
@@ skipping 370 matching lines @@
 // RenderWidgetHostView, public:
 
 // static
 RenderWidgetHostView*
 RenderWidgetHostView::CreateViewForWidget(RenderWidgetHost* widget) {
   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(widget);
   return new RenderWidgetHostViewAndroid(rwhi, NULL);
 }
 
 } // namespace content