chrome/common/icon_with_badge_image_source.cc

   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 #include "chrome/common/icon_with_badge_image_source.h"
   6
   7 #include <algorithm>
   8
   9 #include "chrome/common/badge_util.h"
  10 #include "ui/gfx/canvas.h"
  11 #include "ui/gfx/geometry/rect.h"
  12 #include "ui/gfx/image/image_skia_operations.h"
  13
  14 IconWithBadgeImageSource::Badge::Badge(std::string text,
  15                                        SkColor text_color,
  16                                        SkColor background_color)
  17     : text(text), text_color(text_color), background_color(background_color) {
  18 }
  19
  20 IconWithBadgeImageSource::Badge::~Badge() {}
  21
  22 IconWithBadgeImageSource::IconWithBadgeImageSource(const gfx::Size& size)
  23     : gfx::CanvasImageSource(size, false),
  24       grayscale_(false),
  25       paint_decoration_(false) {
  26 }
  27
  28 IconWithBadgeImageSource::~IconWithBadgeImageSource() {
  29 }
  30
  31 void IconWithBadgeImageSource::SetIcon(const gfx::Image& icon) {
  32   icon_ = icon;
  33 }
  34
  35 void IconWithBadgeImageSource::SetBadge(scoped_ptr<Badge> badge) {
  36   badge_ = badge.Pass();
  37 }
  38
  39 void IconWithBadgeImageSource::Draw(gfx::Canvas* canvas) {
  40   if (icon_.IsEmpty())
  41     return;
  42
  43   int x_offset = std::floor((size().width() - icon_.Width()) / 2.0);
  44   int y_offset = std::floor((size().height() - icon_.Height()) / 2.0);
  45   gfx::ImageSkia skia = icon_.AsImageSkia();
  46   if (grayscale_)
  47     skia = gfx::ImageSkiaOperations::CreateHSLShiftedImage(skia, {-1, 0, 0.6});
  48   canvas->DrawImageInt(skia, x_offset, y_offset);
  49
  50   // Draw a badge on the provided browser action icon's canvas.
  51   // TODO(devlin): Pull PaintBadge() into here.
  52   if (badge_) {
  53     badge_util::PaintBadge(canvas, gfx::Rect(size()), badge_->text,
  54                            badge_->text_color, badge_->background_color,
  55                            size().width());
  56   }
  57
  58   if (paint_decoration_)
  59     PaintDecoration(canvas);
  60 }
  61
  62 void IconWithBadgeImageSource::PaintDecoration(gfx::Canvas* canvas) {
  63   static const SkColor decoration_color = SkColorSetARGB(255, 70, 142, 226);
  64
  65   int major_radius = std::ceil(size().width() / 5.0);
  66   int minor_radius = std::ceil(major_radius / 2.0);
  67   gfx::Point center_point(major_radius + 1,
  68                           size().height() - (major_radius) - 1);
  69   SkPaint paint;
  70   paint.setAntiAlias(true);
  71   paint.setStyle(SkPaint::kFill_Style);
  72   paint.setColor(SK_ColorTRANSPARENT);
  73   paint.setXfermodeMode(SkXfermode::kSrc_Mode);
  74   canvas->DrawCircle(center_point,
  75                      major_radius,
  76                      paint);
  77   paint.setColor(decoration_color);
  78   canvas->DrawCircle(center_point,
  79                      minor_radius,
  80                      paint);
  81 }
  82