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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_SHELF_OVERFLOW_BUTTON_H_ | |
6 #define ASH_COMMON_SHELF_OVERFLOW_BUTTON_H_ | |
7 | |
8 #include "base/macros.h" | |
9 #include "ui/gfx/geometry/rect.h" | |
10 #include "ui/gfx/image/image_skia.h" | |
11 #include "ui/views/controls/button/custom_button.h" | |
12 | |
13 namespace ash { | |
14 class ShelfView; | |
15 class WmShelf; | |
16 | |
17 // Shelf overflow chevron button. | |
18 class OverflowButton : public views::CustomButton { | |
19 public: | |
20 // |shelf_view| is the view containing this button. | |
21 OverflowButton(ShelfView* shelf_view, WmShelf* wm_shelf); | |
22 ~OverflowButton() override; | |
23 | |
24 void OnShelfAlignmentChanged(); | |
25 void OnOverflowBubbleShown(); | |
26 void OnOverflowBubbleHidden(); | |
27 | |
28 // Updates background and schedules a paint. | |
29 void UpdateShelfItemBackground(SkColor color); | |
30 | |
31 private: | |
32 // views::CustomButton: | |
33 void OnPaint(gfx::Canvas* canvas) override; | |
34 std::unique_ptr<views::InkDrop> CreateInkDrop() override; | |
35 std::unique_ptr<views::InkDropRipple> CreateInkDropRipple() const override; | |
36 bool ShouldEnterPushedState(const ui::Event& event) override; | |
37 void NotifyClick(const ui::Event& event) override; | |
38 std::unique_ptr<views::InkDropMask> CreateInkDropMask() const override; | |
39 | |
40 // Helper functions to paint the background and foreground of the button | |
41 // at |bounds|. | |
42 void PaintBackground(gfx::Canvas* canvas, const gfx::Rect& bounds); | |
43 void PaintForeground(gfx::Canvas* canvas, const gfx::Rect& bounds); | |
44 | |
45 // Calculates the bounds of the overflow button based on the shelf alignment. | |
46 gfx::Rect CalculateButtonBounds() const; | |
47 | |
48 // Used for bottom shelf alignment. | |
49 gfx::ImageSkia bottom_image_; | |
50 | |
51 // Cached rotations of |bottom_image_| used for left and right shelf | |
52 // alignments. | |
53 gfx::ImageSkia left_image_; | |
54 gfx::ImageSkia right_image_; | |
55 | |
56 ShelfView* shelf_view_; | |
57 WmShelf* wm_shelf_; | |
58 | |
59 // Color used to paint the background. | |
60 SkColor background_color_; | |
61 | |
62 DISALLOW_COPY_AND_ASSIGN(OverflowButton); | |
63 }; | |
64 | |
65 } // namespace ash | |
66 | |
67 #endif // ASH_COMMON_SHELF_OVERFLOW_BUTTON_H_ | |
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