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_WIN_H_ 6 #define UI_VIEWS_COREWM_TOOLTIP_WIN_H_ 7 8 #include "base/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "base/strings/string16.h" 11 #include "ui/gfx/point.h" 12 #include "ui/views/corewm/tooltip.h" 13 14 #include <windows.h> 15 #include <commctrl.h> 16 17 namespace views { 18 namespace corewm { 19 20 // Implementation of Tooltip that uses the native win32 control for showing the 21 // tooltip. 22 class VIEWS_EXPORT TooltipWin : public Tooltip { 23 public: 24 explicit TooltipWin(HWND parent); 25 virtual ~TooltipWin(); 26 27 // HandleNotify() is forwarded from DesktopWindowTreeHostWin to keep the 28 // native tooltip in sync. 29 bool HandleNotify(int w_param, NMHDR* l_param, LRESULT* l_result); 30 31 private: 32 // Ensures |tooltip_hwnd_| is valid. Returns true if valid, false if there 33 // a problem creating |tooltip_hwnd_|. 34 bool EnsureTooltipWindow(); 35 36 // Sets the position of the tooltip. 37 void PositionTooltip(); 38 39 // Tooltip: 40 virtual void SetText(aura::Window* window, 41 const base::string16& tooltip_text, 42 const gfx::Point& location) OVERRIDE; 43 virtual void Show() OVERRIDE; 44 virtual void Hide() OVERRIDE; 45 virtual bool IsVisible() OVERRIDE; 46 47 // The window |tooltip_hwnd_| is parented to. 48 HWND parent_hwnd_; 49 50 // Shows the tooltip. 51 HWND tooltip_hwnd_; 52 53 // Used to modify the tooltip. 54 TOOLINFO toolinfo_; 55 56 // Is the tooltip showing? 57 bool showing_; 58 59 // Location to show the tooltip at. In order to position the tooltip we need 60 // to know the size. The size is only available from TTN_SHOW, so we have to 61 // cache it. 62 gfx::Point location_; 63 64 DISALLOW_COPY_AND_ASSIGN(TooltipWin); 65 }; 66 67 } // namespace corewm 68 } // namespace views 69 70 #endif // UI_VIEWS_COREWM_TOOLTIP_WIN_H_ 71
