chrome/common/icon_with_badge_image_source.h

   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_COMMON_ICON_WITH_BADGE_IMAGE_SOURCE_H_
   6 #define CHROME_COMMON_ICON_WITH_BADGE_IMAGE_SOURCE_H_
   7
   8 #include <string>
   9
  10 #include "third_party/skia/include/core/SkColor.h"
  11 #include "ui/gfx/image/canvas_image_source.h"
  12 #include "ui/gfx/image/image.h"
  13
  14 namespace gfx {
  15 class Size;
  16 }
  17
  18 // CanvasImageSource for creating extension icon with a badge.
  19 // TODO(devlin): This class and its buddy badge_util don't really belong in
  20 // chrome/common/.
  21 class IconWithBadgeImageSource : public gfx::CanvasImageSource {
  22  public:
  23   // The data representing a badge to be painted over the base image.
  24   struct Badge {
  25     Badge(std::string text, SkColor text_color, SkColor background_color);
  26     ~Badge();
  27
  28     std::string text;
  29     SkColor text_color;
  30     SkColor background_color;
  31
  32    private:
  33     DISALLOW_COPY_AND_ASSIGN(Badge);
  34   };
  35
  36   explicit IconWithBadgeImageSource(const gfx::Size& size);
  37   ~IconWithBadgeImageSource() override;
  38
  39   void SetIcon(const gfx::Image& icon);
  40   void SetBadge(scoped_ptr<Badge> badge);
  41   void set_grayscale(bool grayscale) { grayscale_ = grayscale; }
  42   void set_paint_decoration(bool paint_decoration) {
  43     paint_decoration_ = paint_decoration;
  44   }
  45
  46   bool grayscale() const { return grayscale_; }
  47   bool paint_decoration() const { return paint_decoration_; }
  48
  49  private:
  50   // gfx::CanvasImageSource:
  51   void Draw(gfx::Canvas* canvas) override;
  52
  53   // Paints a decoration over the base icon to indicate that the action wants to
  54   // run.
  55   void PaintDecoration(gfx::Canvas* canvas);
  56
  57   // The base icon to draw.
  58   gfx::Image icon_;
  59
  60   // An optional badge to draw over the base icon.
  61   scoped_ptr<Badge> badge_;
  62
  63   // Whether or not the icon should be grayscaled (e.g., to show it is
  64   // disabled).
  65   bool grayscale_;
  66
  67   // Whether or not to paint a decoration over the base icon to indicate the
  68   // represented action wants to run.
  69   bool paint_decoration_;
  70
  71   DISALLOW_COPY_AND_ASSIGN(IconWithBadgeImageSource);
  72 };
  73
  74 #endif  // CHROME_COMMON_ICON_WITH_BADGE_IMAGE_SOURCE_H_