ui/views/corewm/tooltip_aura.h

   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 "base/memory/scoped_ptr.h"
   9 #include "ui/gfx/screen_type_delegate.h"
  10 #include "ui/views/corewm/tooltip.h"
  11 #include "ui/views/widget/widget_observer.h"
  12
  13 namespace gfx {
  14 class FontList;
  15 class Size;
  16 }  // namespace gfx
  17
  18 namespace views {
  19
  20 class Widget;
  21
  22 namespace corewm {
  23
  24 // Implementation of Tooltip that shows the tooltip using a Widget and Label.
  25 class VIEWS_EXPORT TooltipAura : public Tooltip, public WidgetObserver {
  26  public:
  27   TooltipAura();
  28   ~TooltipAura() override;
  29
  30  private:
  31   class TooltipView;
  32
  33   // Adjusts the bounds given by the arguments to fit inside the desktop
  34   // and applies the adjusted bounds to the label_.
  35   void SetTooltipBounds(const gfx::Point& mouse_pos,
  36                         const gfx::Size& tooltip_size);
  37
  38   // Destroys |widget_|.
  39   void DestroyWidget();
  40
  41   // Tooltip:
  42   int GetMaxWidth(const gfx::Point& location,
  43                   aura::Window* context) const override;
  44   void SetText(aura::Window* window,
  45                const base::string16& tooltip_text,
  46                const gfx::Point& location) override;
  47   void Show() override;
  48   void Hide() override;
  49   bool IsVisible() override;
  50
  51   // WidgetObserver:
  52   void OnWidgetDestroying(Widget* widget) override;
  53
  54   // The view showing the tooltip.
  55   scoped_ptr<TooltipView> tooltip_view_;
  56
  57   // The widget containing the tooltip. May be NULL.
  58   Widget* widget_;
  59
  60   // The window we're showing the tooltip for. Never NULL and valid while
  61   // showing.
  62   aura::Window* tooltip_window_;
  63
  64   DISALLOW_COPY_AND_ASSIGN(TooltipAura);
  65 };
  66
  67 }  // namespace corewm
  68 }  // namespace views
  69
  70 #endif  // UI_VIEWS_COREWM_TOOLTIP_AURA_H_