1 // Copyright (c) 2011 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_TOUCH_TABS_TOUCH_TAB_H_ 6 #define CHROME_BROWSER_UI_TOUCH_TABS_TOUCH_TAB_H_ 7 #pragma once 8 9 #include <string> 10 11 #include "base/memory/scoped_ptr.h" 12 #include "chrome/browser/ui/views/tabs/base_tab.h" 13 #include "ui/gfx/point.h" 14 15 /////////////////////////////////////////////////////////////////////////////// 16 // 17 // TouchTab 18 // 19 // A View that renders a TouchTab in a TouchTabStrip 20 // 21 // TODO(wyck): Use transformable views for scrolling. 22 /////////////////////////////////////////////////////////////////////////////// 23 class TouchTab : public BaseTab { 24 public: 25 // The menu button's class name. 26 static const char kViewClassName[]; 27 28 explicit TouchTab(TabController* controller); 29 virtual ~TouchTab(); 30 31 // Set the background offset used to match the image in the inactive tab 32 // to the frame image. 33 void set_background_offset(const gfx::Point& offset) { 34 background_offset_ = offset; 35 } 36 37 // Returns the minimum possible size of a single unselected Tab. 38 static gfx::Size GetMinimumUnselectedSize(); 39 40 protected: 41 virtual const gfx::Rect& GetTitleBounds() const; 42 virtual const gfx::Rect& GetIconBounds() const; 43 44 private: 45 // Overridden from views::View: 46 virtual bool OnMousePressed(const views::MouseEvent& event) OVERRIDE; 47 virtual bool OnMouseDragged(const views::MouseEvent& event) OVERRIDE; 48 virtual void OnMouseReleased(const views::MouseEvent& event) OVERRIDE; 49 virtual void OnPaint(gfx::Canvas* canvas); 50 virtual void Layout(); 51 virtual bool HasHitTestMask() const; 52 virtual void GetHitTestMask(gfx::Path* path) const; 53 54 // Paint various portions of the Tab 55 void PaintTabBackground(gfx::Canvas* canvas); 56 void PaintIcon(gfx::Canvas* canvas); 57 void PaintActiveTabBackground(gfx::Canvas* canvas); 58 59 // TODO(wyck): will eventually add OnTouchEvent when the Touch Tab Strip 60 // requires touch-specific event handling. 61 62 // Performs a one-time initialization of static resources such as tab images. 63 static void InitTabResources(); 64 65 // Loads the images to be used for the tab background. 66 static void LoadTabImages(); 67 68 // the bounds of the title text 69 gfx::Rect title_bounds_; 70 71 // the bounds of the favicon 72 gfx::Rect favicon_bounds_; 73 74 // The offset used to paint the inactive background image. 75 gfx::Point background_offset_; 76 77 // 'l' is for left 78 // 'c' is for center 79 // 'r' is for right 80 struct TouchTabImage { 81 SkBitmap* image_l; 82 SkBitmap* image_c; 83 SkBitmap* image_r; 84 int l_width; 85 int r_width; 86 int y_offset; 87 }; 88 static TouchTabImage tab_active; 89 static TouchTabImage tab_inactive; 90 static TouchTabImage tab_alpha; 91 92 DISALLOW_COPY_AND_ASSIGN(TouchTab); 93 }; 94 95 #endif // CHROME_BROWSER_UI_TOUCH_TABS_TOUCH_TAB_H_ 96
