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Side by Side Diff: ui/events/gesture_detection/velocity_tracker.cc

Issue 828633002: replace COMPILE_ASSERT with static_assert in ui/ (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix for rebase Created 5 years, 11 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "ui/events/gesture_detection/velocity_tracker.h" 5 #include "ui/events/gesture_detection/velocity_tracker.h"
6 6
7 #include <cmath> 7 #include <cmath>
8 8
9 #include "base/logging.h" 9 #include "base/logging.h"
10 #include "ui/events/gesture_detection/motion_event.h" 10 #include "ui/events/gesture_detection/motion_event.h"
(...skipping 14 matching lines...) Expand all
25 BitSet32 id_bits, 25 BitSet32 id_bits,
26 const Position* positions) = 0; 26 const Position* positions) = 0;
27 virtual bool GetEstimator(uint32_t id, Estimator* out_estimator) const = 0; 27 virtual bool GetEstimator(uint32_t id, Estimator* out_estimator) const = 0;
28 28
29 protected: 29 protected:
30 VelocityTrackerStrategy() {} 30 VelocityTrackerStrategy() {}
31 }; 31 };
32 32
33 namespace { 33 namespace {
34 34
35 COMPILE_ASSERT(MotionEvent::MAX_POINTER_ID < 32, max_pointer_id_too_large); 35 static_assert(MotionEvent::MAX_POINTER_ID < 32, "max pointer id too large");
36 36
37 // Threshold between ACTION_MOVE events for determining that a pointer has 37 // Threshold between ACTION_MOVE events for determining that a pointer has
38 // stopped moving. Some input devices do not send ACTION_MOVE events in the case 38 // stopped moving. Some input devices do not send ACTION_MOVE events in the case
39 // where a pointer has stopped. We need to detect this case so that we can 39 // where a pointer has stopped. We need to detect this case so that we can
40 // accurately predict the velocity after the pointer starts moving again. 40 // accurately predict the velocity after the pointer starts moving again.
41 const int kAssumePointerMoveStoppedTimeMs = 40; 41 const int kAssumePointerMoveStoppedTimeMs = 40;
42 42
43 // Threshold between ACTION_MOVE and ACTION_{UP|POINTER_UP} events for 43 // Threshold between ACTION_MOVE and ACTION_{UP|POINTER_UP} events for
44 // determining that a pointer has stopped moving. This is a larger threshold 44 // determining that a pointer has stopped moving. This is a larger threshold
45 // than |kAssumePointerMoveStoppedTimeMs|, as some devices may delay synthesis 45 // than |kAssumePointerMoveStoppedTimeMs|, as some devices may delay synthesis
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845 out_estimator->degree = state.degree; 845 out_estimator->degree = state.degree;
846 out_estimator->xcoeff[0] = state.xpos; 846 out_estimator->xcoeff[0] = state.xpos;
847 out_estimator->xcoeff[1] = state.xvel; 847 out_estimator->xcoeff[1] = state.xvel;
848 out_estimator->xcoeff[2] = state.xaccel / 2; 848 out_estimator->xcoeff[2] = state.xaccel / 2;
849 out_estimator->ycoeff[0] = state.ypos; 849 out_estimator->ycoeff[0] = state.ypos;
850 out_estimator->ycoeff[1] = state.yvel; 850 out_estimator->ycoeff[1] = state.yvel;
851 out_estimator->ycoeff[2] = state.yaccel / 2; 851 out_estimator->ycoeff[2] = state.yaccel / 2;
852 } 852 }
853 853
854 } // namespace ui 854 } // namespace ui
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