ash/common/frame/caption_buttons/frame_caption_button.h - Issue 2734653002: chromeos: Move files in //ash/common to //ash

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Issue 2734653002: chromeos: Move files in //ash/common to //ash (Closed)

Patch Set: fix a11y tests, fix docs Created 3 years, 9 months ago

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1 // Copyright 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 ASH_COMMON_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_H_

6 #define ASH_COMMON_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_H_

7

8 #include <memory>

9

10 #include "ash/ash_export.h"

11 #include "ash/common/frame/caption_buttons/caption_button_types.h"

12 #include "base/macros.h"

13 #include "ui/gfx/image/image_skia.h"

14 #include "ui/views/controls/button/custom_button.h"

15

16 namespace gfx {

17 class SlideAnimation;

18 struct VectorIcon;

19 }

20

21 namespace ash {

22

23 // Base class for the window caption buttons (minimize, maximize, restore,

24 // close).

25 class ASH_EXPORT FrameCaptionButton : public views::CustomButton {

26 public:

27 enum Animate { ANIMATE_YES, ANIMATE_NO };

28

29 static const char kViewClassName[];

30

31 FrameCaptionButton(views::ButtonListener* listener, CaptionButtonIcon icon);

32 ~FrameCaptionButton() override;

33

34 // Sets the image to use to paint the button. If \|animate\| is ANIMATE_YES,

35 // the button crossfades to the new visuals. If the image matches the one

36 // currently used by the button and \|animate\| is ANIMATE_NO, the crossfade

37 // animation is progressed to the end.

38 void SetImage(CaptionButtonIcon icon,

39 Animate animate,

40 const gfx::VectorIcon& icon_image);

41

42 // Returns true if the button is crossfading to new visuals set in

43 // SetImage().

44 bool IsAnimatingImageSwap() const;

45

46 // Sets the alpha to use for painting. Used to animate visibility changes.

47 void SetAlpha(int alpha);

48

49 // views::View overrides:

50 gfx::Size GetPreferredSize() const override;

51 const char* GetClassName() const override;

52 void OnPaint(gfx::Canvas* canvas) override;

53

54 void set_paint_as_active(bool paint_as_active) {

55 paint_as_active_ = paint_as_active;

56 }

57

58 void set_use_light_images(bool light) { use_light_images_ = light; }

59

60 CaptionButtonIcon icon() const { return icon_; }

61

62 void set_size(const gfx::Size& size) { size_ = size; }

63

64 protected:

65 // views::CustomButton override:

66 void OnGestureEvent(ui::GestureEvent* event) override;

67

68 private:

69 // Paints \|to_center\| centered within the button with \|alpha\|.

70 void PaintCentered(gfx::Canvas* canvas,

71 const gfx::ImageSkia& to_center,

72 int alpha);

73

74 // The button's current icon.

75 CaptionButtonIcon icon_;

76

77 // The size of the button.

78 gfx::Size size_;

79

80 // Whether the button should be painted as active.

81 bool paint_as_active_;

82

83 // Whether to paint in a lighter color (for use on dark backgrounds).

84 bool use_light_images_;

85

86 // Current alpha to use for painting.

87 int alpha_;

88

89 // The image id (kept for the purposes of testing) and image used to paint the

90 // button's icon.

91 const gfx::VectorIcon* icon_definition_ = nullptr;

92 gfx::ImageSkia icon_image_;

93

94 // The icon image to crossfade from.

95 gfx::ImageSkia crossfade_icon_image_;

96

97 // Crossfade animation started when the button's images are changed by

98 // SetImage().

99 std::unique_ptr<gfx::SlideAnimation> swap_images_animation_;

100

101 DISALLOW_COPY_AND_ASSIGN(FrameCaptionButton);

102 };

103

104 } // namespace ash

105

106 #endif // ASH_COMMON_FRAME_CAPTION_BUTTONS_FRAME_CAPTION_BUTTON_H_

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