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_DETACHABLE_TOOLBAR_VIEW_H_ 6 #define CHROME_BROWSER_UI_VIEWS_DETACHABLE_TOOLBAR_VIEW_H_ 7 8 #include "chrome/browser/ui/host_desktop.h" 9 #include "ui/views/accessible_pane_view.h" 10 11 struct SkRect; 12 13 // DetachableToolbarView contains functionality common to views that can detach 14 // from the Chrome frame, such as the BookmarkBarView and the Extension shelf. 15 class DetachableToolbarView : public views::AccessiblePaneView { 16 public: 17 // The color gradient start value close to the edge of the divider. 18 static const SkColor kEdgeDividerColor; 19 // The color gradient value for the middle of the divider. 20 static const SkColor kMiddleDividerColor; 21 DetachableToolbarView()22 DetachableToolbarView() {} ~DetachableToolbarView()23 virtual ~DetachableToolbarView() {} 24 25 // Whether the view is currently detached from the Chrome frame. 26 virtual bool IsDetached() const = 0; 27 28 // Gets the current state of the resize animation (show/hide). 29 virtual double GetAnimationValue() const = 0; 30 31 // Gets the current amount of overlap atop the browser toolbar. 32 virtual int GetToolbarOverlap() const = 0; 33 34 // Paints the background (including the theme image behind content area) for 35 // the bar/shelf when it is attached to the top toolbar into |bounds|. 36 // |background_origin| is the origin to use for painting the theme image. 37 static void PaintBackgroundAttachedMode( 38 gfx::Canvas* canvas, 39 ui::ThemeProvider* theme_provider, 40 const gfx::Rect& bounds, 41 const gfx::Point& background_origin, 42 chrome::HostDesktopType host_desktop_type); 43 44 // Calculate the rect for the content area of the bar/shelf. This is only 45 // needed when the bar/shelf is detached from the Chrome frame (otherwise the 46 // content area is the whole area of the bar/shelf. When detached, however, 47 // only a small round rectangle is for drawing our content on. This calculates 48 // how big this area is, where it is located within the shelf and how round 49 // the edges should be. 50 static void CalculateContentArea(double animation_state, 51 double horizontal_padding, 52 double vertical_padding, 53 SkRect* rect, 54 double* roundness, 55 views::View* view); 56 57 // Paint the horizontal border separating the shelf/bar from the toolbar or 58 // page content according to |at_top| with |color|. 59 static void PaintHorizontalBorder(gfx::Canvas* canvas, 60 DetachableToolbarView* view, 61 bool at_top, 62 SkColor color); 63 64 // Paint the background of the content area (the surface behind the 65 // bookmarks). |rect| is the rectangle to paint the background within. 66 // |roundness| describes the roundness of the corners. 67 static void PaintContentAreaBackground(gfx::Canvas* canvas, 68 ui::ThemeProvider* theme_provider, 69 const SkRect& rect, 70 double roundness); 71 // Paint the border around the content area (when in detached mode). 72 static void PaintContentAreaBorder(gfx::Canvas* canvas, 73 ui::ThemeProvider* theme_provider, 74 const SkRect& rect, 75 double roundness); 76 77 // Paint a themed gradient divider at location |x|. |height| is the full 78 // height of the view you want to paint the divider into, not the height of 79 // the divider. The height of the divider will become: 80 // |height| - 2 * |vertical_padding|. 81 // The color of the divider is a gradient starting with |top_color| at the 82 // top, and changing into |middle_color| and then over to |bottom_color| as 83 // you go further down. 84 static void PaintVerticalDivider(gfx::Canvas* canvas, 85 int x, 86 int height, 87 int vertical_padding, 88 SkColor top_color, 89 SkColor middle_color, 90 SkColor bottom_color); 91 92 private: 93 DISALLOW_COPY_AND_ASSIGN(DetachableToolbarView); 94 }; 95 96 #endif // CHROME_BROWSER_UI_VIEWS_DETACHABLE_TOOLBAR_VIEW_H_ 97