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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CHROME_BROWSER_UI_TABS_TAB_AUDIO_INDICATOR_H_ | |
6 #define CHROME_BROWSER_UI_TABS_TAB_AUDIO_INDICATOR_H_ | |
7 | |
8 #include <vector> | |
9 | |
10 #include "base/basictypes.h" | |
cpu_(ooo_6.6-7.5)
2013/03/11 02:40:27
what does require basictypes.h in this header?
sail
2013/03/11 23:16:13
Done.
Removed.
| |
11 #include "base/compiler_specific.h" | |
12 #include "base/gtest_prod_util.h" | |
13 #include "base/memory/scoped_ptr.h" | |
14 #include "ui/base/animation/animation_delegate.h" | |
15 | |
16 namespace gfx { | |
17 class Canvas; | |
18 class Rect; | |
19 } | |
20 namespace ui { | |
21 class Animation; | |
22 class LinearAnimation; | |
23 } | |
24 | |
25 // This class is used to draw an animating tab audio indicator. | |
26 class TabAudioIndicator : public ui::AnimationDelegate { | |
27 public: | |
28 class Delegate { | |
29 public: | |
30 virtual void ScheduleAudioIndicatorPaint() = 0; | |
31 }; | |
32 | |
33 explicit TabAudioIndicator(Delegate* delegate); | |
34 virtual ~TabAudioIndicator(); | |
35 | |
36 void SetIsPlayingAudio(bool is_playing_audio); | |
37 bool IsAnimating(); | |
38 | |
39 void Paint(gfx::Canvas* canvas, const gfx::Rect& rect); | |
40 | |
41 private: | |
42 FRIEND_TEST_ALL_PREFIXES(TabAudioIndicatorTest, AnimationState); | |
43 FRIEND_TEST_ALL_PREFIXES(TabAudioIndicatorTest, SchedulePaint); | |
44 | |
45 // AnimationDelegate: | |
46 virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE; | |
47 virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE; | |
48 | |
49 // Gets the equalizer levels for all 3 columns. The values are tweened between | |
50 // the current and target frame. | |
51 std::vector<int> GetCurrentEqualizerLevels() const; | |
52 | |
53 Delegate* delegate_; | |
54 scoped_ptr<ui::LinearAnimation> animation_; | |
55 | |
56 // The equalizer frame that's currently being displayed. | |
57 int frame_index_; | |
cpu_(ooo_6.6-7.5)
2013/03/11 02:40:27
size_t
sail
2013/03/11 23:16:13
Done.
| |
58 | |
59 // The equalizer levels that were last displayed. This is used to prevent | |
60 // unnecessary drawing when animation progress doesn't result in equalizer | |
61 // levels changing. | |
62 std::vector<int> last_displayed_equalizer_levels_; | |
63 | |
64 enum State { | |
65 STATE_ANIMATING, | |
66 STATE_ANIMATION_ENDING, | |
67 STATE_NOT_ANIMATING, | |
cpu_(ooo_6.6-7.5)
2013/03/11 02:40:27
it is nice if STATE_NOT_ANIMATING is first since i
sail
2013/03/11 23:16:13
Done.
| |
68 }; | |
69 State state_; | |
70 | |
71 DISALLOW_COPY_AND_ASSIGN(TabAudioIndicator); | |
72 }; | |
73 | |
74 #endif // CHROME_BROWSER_UI_TABS_TAB_AUDIO_INDICATOR_H_ | |
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