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 13namespace gfx { 14class FontList; 15} // namespace gfx 16 17namespace views { 18 19class Widget; 20 21namespace corewm { 22 23// Implementation of Tooltip that shows the tooltip using a Widget and Label. 24class 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_ 81