1 files changed, 20 insertions, 0 deletions
diff --git a/tizen_src/chromium_impl/content/browser/renderer_host/render_widget_host_view_efl.cc b/tizen_src/chromium_impl/content/browser/renderer_host/render_widget_host_view_efl.cc
index 9c231a04683c..85ceb88aef10 100755
--- a/tizen_src/chromium_impl/content/browser/renderer_host/render_widget_host_view_efl.cc
+++ b/tizen_src/chromium_impl/content/browser/renderer_host/render_widget_host_view_efl.cc
@@ -189,6 +189,7 @@ RenderWidgetHostViewEfl::RenderWidgetHostViewEfl(RenderWidgetHost* widget,
     surface_id_(0),
     is_modifier_key_(false),
     touch_events_enabled_(false),
+    should_check_move_threshold_(false),
     web_contents_(web_contents),
     compositor_(NULL),
     root_layer_(new ui::Layer(ui::LAYER_SOLID_COLOR)),
@@ -1547,6 +1548,25 @@ void RenderWidgetHostViewEfl::ProcessTouchEvents() {
     evas_touch_point_list_nth_xy_get(evas_, i, &pt.x, &pt.y);
     state = evas_touch_point_list_nth_state_get(evas_, i);
 
+    // Filter out events jittery for single-touch gestures.
+    if (count == 1) {
+      if (state == EVAS_TOUCH_POINT_DOWN) {
+        should_check_move_threshold_ = true;
+        last_single_press_down_position_ = gfx::Point(pt.x, pt.y);
+      } else if (should_check_move_threshold_ &&
+                 state == EVAS_TOUCH_POINT_MOVE) {
+        gfx::Point current_point(pt.x, pt.y);
+        gfx::Vector2d diff = current_point - last_single_press_down_position_;
+
+        unsigned threshold =
+            elm_config_scroll_thumbscroll_threshold_get();
+        if (diff.LengthSquared() < threshold * threshold)
+          return;
+
+        should_check_move_threshold_ = false;
+      }
+    }
+
     ui::TouchEvent touch_event = MakeTouchEvent(pt, state, id, content_image_);
     HandleTouchEvent(&touch_event);
   }