Index: remoting/client/fling_animation.cc |
diff --git a/remoting/client/fling_animation.cc b/remoting/client/fling_animation.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..15a68751b7123329951611560826f5a4e22db587 |
--- /dev/null |
+++ b/remoting/client/fling_animation.cc |
@@ -0,0 +1,40 @@ |
+// Copyright 2017 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 "remoting/client/fling_animation.h" |
+ |
+namespace remoting { |
+ |
+FlingAnimation::FlingAnimation(float time_constant, |
nicholss
2017/05/10 19:34:05
It seems like FlingTracker could be just a core cl
Yuwei
2017/05/10 23:28:24
TBH I'm not sure :)
I'm just slightly against putt
|
+ const FlingCallback& fling_callback) |
+ : fling_tracker_(time_constant), fling_callback_(fling_callback) {} |
nicholss
2017/05/10 19:34:05
I am not sure this would compile, how is a float a
Yuwei
2017/05/10 23:28:24
This is essentially calling the FlingTracker(time_
|
+ |
+FlingAnimation::~FlingAnimation() {} |
+ |
+void FlingAnimation::Reset(float velocity_x, float velocity_y) { |
+ previous_position_x_ = 0.f; |
+ previous_position_y_ = 0.f; |
+ fling_tracker_.StartFling(velocity_x, velocity_y); |
+} |
+ |
+bool FlingAnimation::IsAnimationInProgress() const { |
+ return fling_tracker_.IsFlingInProgress(); |
+} |
+ |
+void FlingAnimation::Tick() { |
+ float x, y; |
+ bool in_progress = |
+ fling_tracker_.TrackPositions(base::TimeTicks::Now(), &x, &y); |
nicholss
2017/05/10 19:34:05
If this returned deltas you would not need to know
Yuwei
2017/05/10 23:28:24
Done.
|
+ if (in_progress) { |
+ fling_callback_.Run(x - previous_position_x_, y - previous_position_y_); |
+ previous_position_x_ = x; |
+ previous_position_y_ = y; |
+ } |
+} |
+ |
+void FlingAnimation::Abort() { |
+ fling_tracker_.StopFling(); |
+} |
+ |
+} // namespace remoting |