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 UI_VIEWS_WINDOW_FRAME_BACKGROUND_H_ 6 #define UI_VIEWS_WINDOW_FRAME_BACKGROUND_H_ 7 8 #include "base/basictypes.h" 9 #include "third_party/skia/include/core/SkColor.h" 10 #include "ui/views/views_export.h" 11 12 namespace gfx { 13 class Canvas; 14 class ImageSkia; 15 } 16 17 namespace views { 18 19 class View; 20 21 // FrameBackground handles painting for all the various window frames we 22 // support in Chrome. It intends to consolidate paint code that historically 23 // was copied. One frame to rule them all! 24 class VIEWS_EXPORT FrameBackground { 25 public: 26 FrameBackground(); 27 ~FrameBackground(); 28 29 // Sets the color to draw under the frame images. set_frame_color(SkColor color)30 void set_frame_color(SkColor color) { frame_color_ = color; } 31 32 // Sets the theme image for the top of the window. May be NULL. 33 // Memory is owned by the caller. set_theme_image(const gfx::ImageSkia * image)34 void set_theme_image(const gfx::ImageSkia* image) { theme_image_ = image; } 35 36 // Sets an image that overlays the top window image. Usually used to add 37 // edge highlighting to provide the illusion of depth. May be NULL. 38 // Memory is owned by the caller. set_theme_overlay_image(gfx::ImageSkia * image)39 void set_theme_overlay_image(gfx::ImageSkia* image) { 40 theme_overlay_image_ = image; 41 } 42 43 // Sets the height of the top area to fill with the default frame color, 44 // which must extend behind the tab strip. set_top_area_height(int height)45 void set_top_area_height(int height) { top_area_height_ = height; } 46 47 // Vertical inset for theme image when drawing maximized. set_maximized_top_inset(int inset)48 void set_maximized_top_inset(int inset) { maximized_top_inset_ = inset; } 49 50 // Sets images used when drawing the sides of the frame. 51 // Caller owns the memory. 52 void SetSideImages(const gfx::ImageSkia* left, 53 const gfx::ImageSkia* top, 54 const gfx::ImageSkia* right, 55 const gfx::ImageSkia* bottom); 56 57 // Sets images used when drawing the corners of the frame. 58 // Caller owns the memory. 59 void SetCornerImages(const gfx::ImageSkia* top_left, 60 const gfx::ImageSkia* top_right, 61 const gfx::ImageSkia* bottom_left, 62 const gfx::ImageSkia* bottom_right); 63 64 // Paints the border for a standard, non-maximized window. Also paints the 65 // background of the title bar area, since the top frame border and the 66 // title bar background are a contiguous component. 67 void PaintRestored(gfx::Canvas* canvas, View* view) const; 68 69 // Paints the border for a maximized window, which does not include the 70 // window edges. 71 void PaintMaximized(gfx::Canvas* canvas, View* view) const; 72 73 private: 74 // Fills the frame area with the frame color. 75 void PaintFrameColor(gfx::Canvas* canvas, View* view) const; 76 77 SkColor frame_color_; 78 const gfx::ImageSkia* theme_image_; 79 gfx::ImageSkia* theme_overlay_image_; 80 int top_area_height_; 81 82 // Images for the sides of the frame. 83 const gfx::ImageSkia* left_edge_; 84 const gfx::ImageSkia* top_edge_; 85 const gfx::ImageSkia* right_edge_; 86 const gfx::ImageSkia* bottom_edge_; 87 88 // Images for the corners of the frame. 89 const gfx::ImageSkia* top_left_corner_; 90 const gfx::ImageSkia* top_right_corner_; 91 const gfx::ImageSkia* bottom_left_corner_; 92 const gfx::ImageSkia* bottom_right_corner_; 93 94 // Vertical inset for theme image when drawing maximized. 95 int maximized_top_inset_; 96 97 DISALLOW_COPY_AND_ASSIGN(FrameBackground); 98 }; 99 100 } // namespace views 101 102 #endif // UI_VIEWS_WINDOW_FRAME_BACKGROUND_H_ 103