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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 UI_VIEWS_COREWM_TOOLTIP_AURA_H_ | |
| 6 #define UI_VIEWS_COREWM_TOOLTIP_AURA_H_ | |
| 7 | |
| 8 #include "ui/gfx/screen_type_delegate.h" | |
| 9 #include "ui/views/controls/label.h" | |
| 10 #include "ui/views/corewm/tooltip.h" | |
| 11 #include "ui/views/widget/widget_observer.h" | |
| 12 | |
| 13 namespace gfx { | |
| 14 class FontList; | |
| 15 } // namespace gfx | |
| 16 | |
| 17 namespace views { | |
| 18 | |
| 19 class Widget; | |
| 20 | |
| 21 namespace corewm { | |
| 22 | |
| 23 // Implementation of Tooltip that shows the tooltip using a Widget and Label. | |
| 24 class VIEWS_EXPORT TooltipAura : public Tooltip, public WidgetObserver { | |
| 25 public: | |
| 26 explicit TooltipAura(gfx::ScreenType screen_type); | |
| 27 virtual ~TooltipAura(); | |
| 28 | |
| 29 // Trims the tooltip to fit in the width |max_width|, setting |text| to the | |
| 30 // clipped result, |width| to the width (in pixels) of the clipped text | |
| 31 // and |line_count| to the number of lines of text in the tooltip. |font_list| | |
| 32 // is used to layout |text|. |max_width| comes from GetMaxWidth(). | |
| 33 static void TrimTooltipToFit(const gfx::FontList& font_list, | |
| 34 int max_width, | |
| 35 base::string16* text, | |
| 36 int* width, | |
| 37 int* line_count); | |
| 38 | |
| 39 private: | |
| 40 // Returns the max width of the tooltip when shown at the specified location. | |
| 41 int GetMaxWidth(const gfx::Point& location) const; | |
| 42 | |
| 43 // Adjusts the bounds given by the arguments to fit inside the desktop | |
| 44 // and applies the adjusted bounds to the label_. | |
| 45 void SetTooltipBounds(const gfx::Point& mouse_pos, | |
| 46 const gfx::Size& tooltip_size); | |
| 47 | |
| 48 // Destroys |widget_|. | |
| 49 void DestroyWidget(); | |
| 50 | |
| 51 // Tooltip: | |
| 52 virtual void SetText(aura::Window* window, | |
| 53 const base::string16& tooltip_text, | |
| 54 const gfx::Point& location) override; | |
| 55 virtual void Show() override; | |
| 56 virtual void Hide() override; | |
| 57 virtual bool IsVisible() override; | |
| 58 | |
| 59 // WidgetObserver: | |
| 60 virtual void OnWidgetDestroying(Widget* widget) override; | |
| 61 | |
| 62 const gfx::ScreenType screen_type_; | |
| 63 | |
| 64 // The label showing the tooltip. | |
| 65 Label label_; | |
| 66 | |
| 67 // The widget containing the tooltip. May be NULL. | |
| 68 Widget* widget_; | |
| 69 | |
| 70 // The window we're showing the tooltip for. Never NULL and valid while | |
| 71 // showing. | |
| 72 aura::Window* tooltip_window_; | |
| 73 | |
| 74 DISALLOW_COPY_AND_ASSIGN(TooltipAura); | |
| 75 }; | |
| 76 | |
| 77 } // namespace corewm | |
| 78 } // namespace views | |
| 79 | |
| 80 #endif // UI_VIEWS_COREWM_TOOLTIP_AURA_H_ | |
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