ash/system/user/rounded_image_view.cc

   1 // Copyright 2014 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 "ash/system/user/rounded_image_view.h"
   6 #include "skia/ext/image_operations.h"
   7 #include "third_party/skia/include/core/SkPaint.h"
   8 #include "third_party/skia/include/core/SkPath.h"
   9 #include "ui/gfx/canvas.h"
  10 #include "ui/gfx/image/image_skia_operations.h"
  11 #include "ui/gfx/skia_util.h"
  12
  13 namespace ash {
  14 namespace tray {
  15
  16 RoundedImageView::RoundedImageView(int corner_radius, bool active_user)
  17     : active_user_(active_user) {
  18   for (int i = 0; i < 4; ++i)
  19     corner_radius_[i] = corner_radius;
  20 }
  21
  22 RoundedImageView::~RoundedImageView() {}
  23
  24 void RoundedImageView::SetImage(const gfx::ImageSkia& img,
  25                                 const gfx::Size& size) {
  26   image_ = img;
  27   image_size_ = size;
  28
  29   // Try to get the best image quality for the avatar.
  30   resized_ = gfx::ImageSkiaOperations::CreateResizedImage(
  31       image_, skia::ImageOperations::RESIZE_BEST, size);
  32   if (GetWidget() && visible()) {
  33     PreferredSizeChanged();
  34     SchedulePaint();
  35   }
  36 }
  37
  38 void RoundedImageView::SetCornerRadii(int top_left,
  39                                       int top_right,
  40                                       int bottom_right,
  41                                       int bottom_left) {
  42   corner_radius_[0] = top_left;
  43   corner_radius_[1] = top_right;
  44   corner_radius_[2] = bottom_right;
  45   corner_radius_[3] = bottom_left;
  46 }
  47
  48 gfx::Size RoundedImageView::GetPreferredSize() const {
  49   return gfx::Size(image_size_.width() + GetInsets().width(),
  50                    image_size_.height() + GetInsets().height());
  51 }
  52
  53 void RoundedImageView::OnPaint(gfx::Canvas* canvas) {
  54   View::OnPaint(canvas);
  55   gfx::Rect image_bounds(size());
  56   image_bounds.ClampToCenteredSize(GetPreferredSize());
  57   image_bounds.Inset(GetInsets());
  58   const SkScalar kRadius[8] = {
  59     SkIntToScalar(corner_radius_[0]),
  60     SkIntToScalar(corner_radius_[0]),
  61     SkIntToScalar(corner_radius_[1]),
  62     SkIntToScalar(corner_radius_[1]),
  63     SkIntToScalar(corner_radius_[2]),
  64     SkIntToScalar(corner_radius_[2]),
  65     SkIntToScalar(corner_radius_[3]),
  66     SkIntToScalar(corner_radius_[3])
  67   };
  68   SkPath path;
  69   path.addRoundRect(gfx::RectToSkRect(image_bounds), kRadius);
  70   SkPaint paint;
  71   paint.setAntiAlias(true);
  72   paint.setXfermodeMode(active_user_ ? SkXfermode::kSrcOver_Mode
  73                                      : SkXfermode::kLuminosity_Mode);
  74   canvas->DrawImageInPath(
  75       resized_, image_bounds.x(), image_bounds.y(), path, paint);
  76 }
  77
  78 }  // namespace tray
  79 }  // namespace ash