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      1 // Copyright 2013 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/accelerators/accelerator_commands.h"
      6 
      7 #include "ash/desktop_background/desktop_background_controller.h"
      8 #include "ash/desktop_background/user_wallpaper_delegate.h"
      9 #include "ash/shell.h"
     10 #include "third_party/skia/include/core/SkColor.h"
     11 #include "third_party/skia/include/core/SkPaint.h"
     12 #include "ui/gfx/canvas.h"
     13 #include "ui/gfx/image/image_skia.h"
     14 
     15 namespace ash {
     16 namespace debug {
     17 namespace {
     18 
     19 gfx::ImageSkia CreateWallpaperImage(SkColor fill, SkColor rect) {
     20   // TODO(oshima): Consider adding a command line option to control
     21   // wallpaper images for testing.
     22   // The size is randomly picked.
     23   gfx::Size image_size(1366, 768);
     24   gfx::Canvas canvas(image_size, 1.0f, true);
     25   canvas.DrawColor(fill);
     26   SkPaint paint;
     27   paint.setColor(rect);
     28   paint.setStrokeWidth(10);
     29   paint.setStyle(SkPaint::kStroke_Style);
     30   paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
     31   canvas.DrawRoundRect(gfx::Rect(image_size), 100, paint);
     32   return gfx::ImageSkia(canvas.ExtractImageRep());
     33 }
     34 
     35 }  // namespace
     36 
     37 bool CycleDesktopBackgroundMode() {
     38   static int index = 0;
     39   DesktopBackgroundController* desktop_background_controller =
     40       Shell::GetInstance()->desktop_background_controller();
     41   switch (++index % 4) {
     42     case 0:
     43       ash::Shell::GetInstance()->user_wallpaper_delegate()->
     44           InitializeWallpaper();
     45       break;
     46     case 1:
     47       desktop_background_controller->SetCustomWallpaper(
     48           CreateWallpaperImage(SK_ColorRED, SK_ColorBLUE),
     49           WALLPAPER_LAYOUT_STRETCH);
     50       break;
     51     case 2:
     52       desktop_background_controller->SetCustomWallpaper(
     53           CreateWallpaperImage(SK_ColorBLUE, SK_ColorGREEN),
     54           WALLPAPER_LAYOUT_CENTER);
     55       break;
     56     case 3:
     57       desktop_background_controller->SetCustomWallpaper(
     58           CreateWallpaperImage(SK_ColorGREEN, SK_ColorRED),
     59           WALLPAPER_LAYOUT_CENTER_CROPPED);
     60       break;
     61   }
     62   return true;
     63 }
     64 
     65 }  // namespace debug
     66 }  // namespace ash
     67