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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 "ash/wm/workspace/two_step_edge_cycler.h" | 5 #include "ash/wm/common/workspace/two_step_edge_cycler.h" |
| 6 | 6 |
| 7 #include <cstdlib> | 7 #include <cstdlib> |
| 8 | 8 |
| 9 namespace ash { | 9 namespace ash { |
| 10 namespace { | 10 namespace { |
| 11 | 11 |
| 12 // We cycle to the second mode if any of the following happens while the mouse | 12 // We cycle to the second mode if any of the following happens while the mouse |
| 13 // is on the edge of the workspace: | 13 // is on the edge of the workspace: |
| 14 // . The user stops moving the mouse for |kMaxDelay| and then moves the mouse | 14 // . The user stops moving the mouse for |kMaxDelay| and then moves the mouse |
| 15 // again in the preferred direction from the last paused location for at least | 15 // again in the preferred direction from the last paused location for at least |
| 16 // |kMaxPixelsAfterPause| horizontal pixels. | 16 // |kMaxPixelsAfterPause| horizontal pixels. |
| 17 // . The mouse moves |kMaxPixels| horizontal pixels in the preferred direction. | 17 // . The mouse moves |kMaxPixels| horizontal pixels in the preferred direction. |
| 18 // . The mouse is moved |kMaxMoves| times since the last pause. | 18 // . The mouse is moved |kMaxMoves| times since the last pause. |
| 19 const int kMaxDelay = 400; | 19 const int kMaxDelay = 400; |
| 20 const int kMaxPixels = 100; | 20 const int kMaxPixels = 100; |
| 21 const int kMaxPixelsAfterPause = 10; | 21 const int kMaxPixelsAfterPause = 10; |
| 22 const int kMaxMoves = 25; | 22 const int kMaxMoves = 25; |
| 23 | 23 |
| 24 } // namespace | 24 } // namespace |
| 25 | 25 |
| 26 TwoStepEdgeCycler::TwoStepEdgeCycler(const gfx::Point& start, | 26 TwoStepEdgeCycler::TwoStepEdgeCycler(const gfx::Point& start, |
| 27 TwoStepEdgeCycler::Direction direction) | 27 TwoStepEdgeCycler::Direction direction) |
| 28 : second_mode_(false), | 28 : second_mode_(false), |
| 29 time_last_move_(base::TimeTicks::Now()), | 29 time_last_move_(base::TimeTicks::Now()), |
| 30 num_moves_(0), | 30 num_moves_(0), |
| 31 start_x_(start.x()), | 31 start_x_(start.x()), |
| 32 paused_x_(start.x()), | 32 paused_x_(start.x()), |
| 33 paused_(false), | 33 paused_(false), |
| 34 direction_(direction) { | 34 direction_(direction) {} |
| 35 } | |
| 36 | 35 |
| 37 TwoStepEdgeCycler::~TwoStepEdgeCycler() { | 36 TwoStepEdgeCycler::~TwoStepEdgeCycler() {} |
| 38 } | |
| 39 | 37 |
| 40 void TwoStepEdgeCycler::OnMove(const gfx::Point& location) { | 38 void TwoStepEdgeCycler::OnMove(const gfx::Point& location) { |
| 41 if (second_mode_) | 39 if (second_mode_) |
| 42 return; | 40 return; |
| 43 | 41 |
| 44 if ((base::TimeTicks::Now() - time_last_move_).InMilliseconds() > kMaxDelay) { | 42 if ((base::TimeTicks::Now() - time_last_move_).InMilliseconds() > kMaxDelay) { |
| 45 paused_ = true; | 43 paused_ = true; |
| 46 paused_x_ = location.x(); | 44 paused_x_ = location.x(); |
| 47 num_moves_ = 0; | 45 num_moves_ = 0; |
| 48 } | 46 } |
| 49 time_last_move_ = base::TimeTicks::Now(); | 47 time_last_move_ = base::TimeTicks::Now(); |
| 50 | 48 |
| 51 int compare_x = paused_ ? paused_x_ : start_x_; | 49 int compare_x = paused_ ? paused_x_ : start_x_; |
| 52 if (location.x() != compare_x && | 50 if (location.x() != compare_x && |
| 53 (location.x() < compare_x) != (direction_ == DIRECTION_LEFT)) { | 51 (location.x() < compare_x) != (direction_ == DIRECTION_LEFT)) { |
| 54 return; | 52 return; |
| 55 } | 53 } |
| 56 | 54 |
| 57 ++num_moves_; | 55 ++num_moves_; |
| 58 bool moved_in_the_same_direction_after_pause = | 56 bool moved_in_the_same_direction_after_pause = |
| 59 paused_ && std::abs(location.x() - paused_x_) >= kMaxPixelsAfterPause; | 57 paused_ && std::abs(location.x() - paused_x_) >= kMaxPixelsAfterPause; |
| 60 second_mode_ = moved_in_the_same_direction_after_pause || | 58 second_mode_ = moved_in_the_same_direction_after_pause || |
| 61 std::abs(location.x() - start_x_) >= kMaxPixels || | 59 std::abs(location.x() - start_x_) >= kMaxPixels || |
| 62 num_moves_ >= kMaxMoves; | 60 num_moves_ >= kMaxMoves; |
| 63 } | 61 } |
| 64 | 62 |
| 65 } // namespace ash | 63 } // namespace ash |
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