Changing the bounding box for show press and tap gesture

ui/events/gesture_detection/gesture_provider_unittest.cc

Index: ui/events/gesture_detection/gesture_provider_unittest.cc
diff --git a/ui/events/gesture_detection/gesture_provider_unittest.cc b/ui/events/gesture_detection/gesture_provider_unittest.cc
index bf2ea6da05358b74718b62c6d79b059a35c0122f..580e601b6a85c78490d0994ad5594172247b8634 100644
--- a/ui/events/gesture_detection/gesture_provider_unittest.cc
+++ b/ui/events/gesture_detection/gesture_provider_unittest.cc
@@ -257,6 +257,14 @@ class GestureProviderTest : public testing::Test, public GestureProviderClient {
     SetUpWithConfig(config);
   }
 
+  void SetShowPressAndLongPressTimeout(base::TimeDelta showpress_timeout,
+                                       base::TimeDelta longpress_timeout) {
+    GestureProvider::Config config = GetDefaultConfig();
+    config.gesture_detector_config.showpress_timeout = showpress_timeout;
+    config.gesture_detector_config.longpress_timeout = longpress_timeout;
+    SetUpWithConfig(config);
+  }
+
   bool HasDownEvent() const { return gesture_provider_->current_down_event(); }
 
  protected:
@@ -2398,8 +2406,8 @@ TEST_F(GestureProviderTest, NoMinOrMaxGestureBoundsLengthWithStylusOrMouse) {
   EXPECT_EQ(ET_GESTURE_TAP, GetMostRecentGestureEventType());
   EXPECT_EQ(MotionEvent::TOOL_TYPE_STYLUS,
             GetMostRecentGestureEvent().primary_tool_type);
-  EXPECT_EQ(1.f, GetMostRecentGestureEvent().details.bounding_box_f().width());
-  EXPECT_EQ(1.f, GetMostRecentGestureEvent().details.bounding_box_f().height());
+  EXPECT_EQ(0, GetMostRecentGestureEvent().details.bounding_box_f().width());
+  EXPECT_EQ(0, GetMostRecentGestureEvent().details.bounding_box_f().height());

[tdresser, 2014/09/04 13:54:01]

Why did this change? (We probably need to include the ACTION_DOWN radius in our
calculation of the maximum touch radius.)

[lanwei, 2014/09/05 20:40:37]

Now we do not care about the radius of ACTION_UP anymore, we consider about the
largest radius from ACTION_DOWN and all the ACTION_MOVE before the show press is
fired for bounding box, so it is 0 now for the bounding box's width and height. 

 
   event = ObtainMotionEvent(event_time, MotionEvent::ACTION_DOWN);
   event.SetTouchMajor(2.f * kMaxGestureBoundsLength);
@@ -2427,4 +2435,46 @@ TEST_F(GestureProviderTest, NoMinOrMaxGestureBoundsLengthWithStylusOrMouse) {
             GetMostRecentGestureEvent().details.bounding_box_f().height());
 }
 
+// Test the bounding box for show press and tap gestures.

[tdresser, 2014/09/04 13:54:01]

Nice test!

+TEST_F(GestureProviderTest, BoundingBoxForShowPressAndTapGesture) {
+  base::TimeTicks event_time = base::TimeTicks::Now();
+  gesture_provider_->SetDoubleTapSupportForPlatformEnabled(false);
+  base::TimeDelta showpress_timeout = kOneMicrosecond;
+  base::TimeDelta longpress_timeout = kOneSecond;
+  SetShowPressAndLongPressTimeout(showpress_timeout, longpress_timeout);
+
+  MockMotionEvent event =
+      ObtainMotionEvent(event_time, MotionEvent::ACTION_DOWN, 10, 10);
+  event.SetTouchMajor(10);
+
+  EXPECT_TRUE(gesture_provider_->OnTouchEvent(event));
+  EXPECT_EQ(ET_GESTURE_TAP_DOWN, GetMostRecentGestureEventType());
+  EXPECT_EQ(1, GetMostRecentGestureEvent().details.touch_points());
+  EXPECT_EQ(gfx::RectF(5, 5, 10, 10),
+            GetMostRecentGestureEvent().details.bounding_box());
+
+  event = ObtainMotionEvent(
+      event_time + kOneMicrosecond, MotionEvent::ACTION_MOVE, 11, 9);
+  event.SetTouchMajor(20);
+  EXPECT_TRUE(gesture_provider_->OnTouchEvent(event));
+  event = ObtainMotionEvent(
+      event_time + kOneMicrosecond, MotionEvent::ACTION_MOVE, 8, 11);
+  event.SetTouchMajor(10);
+  EXPECT_TRUE(gesture_provider_->OnTouchEvent(event));
+  RunTasksAndWait(showpress_timeout * 2 + kOneMicrosecond);

[tdresser, 2014/09/04 13:54:01]

Probably don't need that kOneMicrosecond, as we're already doubling the wait
time.

[lanwei, 2014/09/05 20:40:36]

Done.

+  EXPECT_EQ(ET_GESTURE_SHOW_PRESS, GetMostRecentGestureEventType());
+  EXPECT_EQ(gfx::RectF(0, 0, 20, 20),
+            GetMostRecentGestureEvent().details.bounding_box());
+
+  event =
+      ObtainMotionEvent(event_time + kOneMicrosecond, MotionEvent::ACTION_UP);
+  EXPECT_TRUE(gesture_provider_->OnTouchEvent(event));
+  EXPECT_EQ(ET_GESTURE_TAP, GetMostRecentGestureEventType());
+
+  EXPECT_EQ(1, GetMostRecentGestureEvent().details.tap_count());
+  EXPECT_EQ(1, GetMostRecentGestureEvent().details.touch_points());
+  EXPECT_EQ(gfx::RectF(0, 0, 20, 20),
+            GetMostRecentGestureEvent().details.bounding_box());
+}
+
 }  // namespace ui