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Side by Side Diff: chrome/browser/ui/tabs/tab_audio_indicator.h

Issue 23513039: Replace animated tab audio indicator with static tab audio indicator. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Addressed review comments from sail@. Created 7 years, 3 months ago
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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/compiler_specific.h"
11 #include "base/gtest_prod_util.h"
12 #include "base/memory/ref_counted.h"
13 #include "base/memory/scoped_ptr.h"
14 #include "ui/base/animation/animation_delegate.h"
15 #include "ui/gfx/image/image_skia.h"
16
17 namespace gfx {
18 class Canvas;
19 class Rect;
20 }
21 namespace ui {
22 class Animation;
23 class AnimationContainer;
24 class LinearAnimation;
25 }
26
27 // This class is used to draw an animating tab audio indicator.
28 class TabAudioIndicator : public ui::AnimationDelegate {
29 public:
30 class Delegate {
31 public:
32 virtual void ScheduleAudioIndicatorPaint() = 0;
33
34 protected:
35 virtual ~Delegate() {}
36 };
37
38 explicit TabAudioIndicator(Delegate* delegate);
39 virtual ~TabAudioIndicator();
40
41 void set_favicon(const gfx::ImageSkia& favicon) { favicon_ = favicon; }
42
43 void SetAnimationContainer(ui::AnimationContainer* animation_container);
44 void SetIsPlayingAudio(bool is_playing_audio);
45 bool IsAnimating();
46
47 void Paint(gfx::Canvas* canvas, const gfx::Rect& rect);
48
49 private:
50 enum State {
51 STATE_NOT_ANIMATING,
52 STATE_ANIMATING,
53 STATE_ANIMATION_ENDING,
54 };
55
56 FRIEND_TEST_ALL_PREFIXES(TabAudioIndicatorTest, AnimationState);
57 FRIEND_TEST_ALL_PREFIXES(TabAudioIndicatorTest, SchedulePaint);
58
59 // AnimationDelegate:
60 virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
61 virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE;
62
63 // Gets the equalizer levels for all 3 columns. The values are tweened between
64 // the current and target frame.
65 std::vector<int> GetCurrentEqualizerLevels() const;
66
67 Delegate* delegate_;
68 scoped_ptr<ui::LinearAnimation> animation_;
69 scoped_refptr<ui::AnimationContainer> animation_container_;
70 gfx::ImageSkia favicon_;
71
72 // The equalizer frame that's currently being displayed.
73 size_t frame_index_;
74
75 // The equalizer levels that were last displayed. This is used to prevent
76 // unnecessary drawing when animation progress doesn't result in equalizer
77 // levels changing.
78 std::vector<int> last_displayed_equalizer_levels_;
79
80 State state_;
81
82 DISALLOW_COPY_AND_ASSIGN(TabAudioIndicator);
83 };
84
85 #endif // CHROME_BROWSER_UI_TABS_TAB_AUDIO_INDICATOR_H_
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