1 // Copyright (c) 2012 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 CHROME_BROWSER_UI_VIEWS_TAB_ICON_VIEW_H_ 6 #define CHROME_BROWSER_UI_VIEWS_TAB_ICON_VIEW_H_ 7 8 #include "base/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "ui/views/view.h" 11 12 namespace chrome { 13 class TabIconViewModel; 14 } 15 16 namespace gfx { 17 class ImageSkia; 18 } 19 20 // A view to display a tab favicon or a throbber. 21 class TabIconView : public views::View { 22 public: 23 static void InitializeIfNeeded(); 24 25 explicit TabIconView(chrome::TabIconViewModel* model); 26 virtual ~TabIconView(); 27 28 // Invoke whenever the tab state changes or the throbber should update. 29 void Update(); 30 31 // Set the throbber to the light style (for use on dark backgrounds). set_is_light(bool is_light)32 void set_is_light(bool is_light) { is_light_ = is_light; } 33 34 // Overridden from View 35 virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE; 36 virtual gfx::Size GetPreferredSize() OVERRIDE; 37 38 private: 39 void PaintThrobber(gfx::Canvas* canvas); 40 void PaintFavicon(gfx::Canvas* canvas, const gfx::ImageSkia& image); 41 void PaintIcon(gfx::Canvas* canvas, 42 const gfx::ImageSkia& image, 43 int src_x, 44 int src_y, 45 int src_w, 46 int src_h, 47 bool filter); 48 49 // Our model. 50 chrome::TabIconViewModel* model_; 51 52 // Whether the throbber is running. 53 bool throbber_running_; 54 55 // Whether we should display our light or dark style. 56 bool is_light_; 57 58 // Current frame of the throbber being painted. This is only used if 59 // throbber_running_ is true. 60 int throbber_frame_; 61 62 DISALLOW_COPY_AND_ASSIGN(TabIconView); 63 }; 64 65 #endif // CHROME_BROWSER_UI_VIEWS_TAB_ICON_VIEW_H_ 66