Touch Events - changedTouches list includes non-changed touch points on Android

content/common/input/synthetic_web_input_event_builders.cc

 // Copyright 2013 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/common/input/synthetic_web_input_event_builders.h"
 
 #include "base/logging.h"
 #include "content/common/input/web_touch_event_traits.h"
 #include "ui/events/keycodes/keyboard_codes.h"
 
@@ skipping 159 matching lines @@
 
 int SyntheticWebTouchEvent::PressPoint(float x, float y) {
   if (touchesLength == touchesLengthCap)
     return -1;
   WebTouchPoint& point = touches[touchesLength];
   point.id = touchesLength;
   point.position.x = point.screenPosition.x = x;
   point.position.y = point.screenPosition.y = y;
   point.state = WebTouchPoint::StatePressed;
   point.radiusX = point.radiusY = 1.f;
+  // Lets give some default values for testing.
+  point.rotationAngle = 1.f;
+  point.force = 1.f;
+
   ++touchesLength;
   WebTouchEventTraits::ResetType(
       WebInputEvent::TouchStart, timeStampSeconds, this);
   return point.id;
 }
 
 void SyntheticWebTouchEvent::MovePoint(int index, float x, float y) {
   CHECK_GE(index, 0);
   CHECK_LT(index, touchesLengthCap);
   // Always set this bit to avoid otherwise unexpected touchmove suppression.
   // The caller can opt-out explicitly, if necessary.
   causesScrollingIfUncanceled = true;
   WebTouchPoint& point = touches[index];
   point.position.x = point.screenPosition.x = x;
   point.position.y = point.screenPosition.y = y;
   touches[index].state = WebTouchPoint::StateMoved;
   WebTouchEventTraits::ResetType(
       WebInputEvent::TouchMove, timeStampSeconds, this);
 }
 
+void SyntheticWebTouchEvent::ChangePointRadius(
+    int index,
+    float radiusX,
+    float radiusY) {
+  CHECK_GE(index, 0);
+  CHECK_LT(index, touchesLengthCap);
+  // Set this bit as in MovePoint().
+  causesScrollingIfUncanceled = true;
+  WebTouchPoint& point = touches[index];
+  point.radiusX = radiusX;
+  point.radiusY = radiusY;
+  touches[index].state = WebTouchPoint::StateMoved;
+  WebTouchEventTraits::ResetType(
+      WebInputEvent::TouchMove, timeStampSeconds, this);
+}
+
+void SyntheticWebTouchEvent::ChangePointRotationAngleAndForce(
+    int index,
+    float rotationAngle,
+    float force) {
+  CHECK_GE(index, 0);
+  CHECK_LT(index, touchesLengthCap);
+  // Set this bit as in MovePoint().
+  causesScrollingIfUncanceled = true;
+  WebTouchPoint& point = touches[index];
+  point.rotationAngle = rotationAngle;
+  point.force = force;
+  touches[index].state = WebTouchPoint::StateMoved;
+  WebTouchEventTraits::ResetType(
+      WebInputEvent::TouchMove, timeStampSeconds, this);
+}
+
 void SyntheticWebTouchEvent::ReleasePoint(int index) {
   CHECK_GE(index, 0);
   CHECK_LT(index, touchesLengthCap);
   touches[index].state = WebTouchPoint::StateReleased;
   WebTouchEventTraits::ResetType(
       WebInputEvent::TouchEnd, timeStampSeconds, this);
 }
 
 void SyntheticWebTouchEvent::CancelPoint(int index) {
   CHECK_GE(index, 0);
   CHECK_LT(index, touchesLengthCap);
   touches[index].state = WebTouchPoint::StateCancelled;
   WebTouchEventTraits::ResetType(
       WebInputEvent::TouchCancel, timeStampSeconds, this);
 }
 
 void SyntheticWebTouchEvent::SetTimestamp(base::TimeDelta timestamp) {
   timeStampSeconds = timestamp.InSecondsF();
 }
 
 }  // namespace content