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      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 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_USERS_WALLPAPER_WALLPAPER_MANAGER_TEST_UTILS_H_
      6 #define CHROME_BROWSER_CHROMEOS_LOGIN_USERS_WALLPAPER_WALLPAPER_MANAGER_TEST_UTILS_H_
      7 
      8 #include <vector>
      9 
     10 #include "ash/ash_constants.h"
     11 #include "ui/gfx/image/image_skia.h"
     12 
     13 namespace base {
     14 class CommandLine;
     15 class ScopedTempDir;
     16 }  // namespace base
     17 
     18 namespace chromeos {
     19 namespace wallpaper_manager_test_utils {
     20 
     21 // Colors used for different default wallpapers by CreateCmdlineWallpapers().
     22 extern const SkColor kLargeDefaultWallpaperColor;
     23 extern const SkColor kSmallDefaultWallpaperColor;
     24 extern const SkColor kLargeGuestWallpaperColor;
     25 extern const SkColor kSmallGuestWallpaperColor;
     26 
     27 // A custom color, specifically chosen to not
     28 // conflict with any of the default wallpaper colors.
     29 extern const SkColor kCustomWallpaperColor;
     30 
     31 // Dimension used for width and height of default wallpaper images. A
     32 // small value is used to minimize the amount of time spent compressing
     33 // and writing images.
     34 extern const int kWallpaperSize;
     35 
     36 // Creates compressed JPEG image of solid color.
     37 // Result bytes are written to |output|.
     38 // Returns true if gfx::JPEGCodec::Encode() succeeds.
     39 bool CreateJPEGImage(int width,
     40                      int height,
     41                      SkColor color,
     42                      std::vector<unsigned char>* output);
     43 
     44 // Creates a test image of given size.
     45 gfx::ImageSkia CreateTestImage(int width, int height, SkColor color);
     46 
     47 // Writes a JPEG image of the specified size and color to |path|. Returns
     48 // true on success.
     49 bool WriteJPEGFile(const base::FilePath& path,
     50                    int width,
     51                    int height,
     52                    SkColor color);
     53 
     54 // Returns true if the color at the center of |image| is close to
     55 // |expected_color|. (The center is used so small wallpaper images can be
     56 // used.)
     57 bool ImageIsNearColor(gfx::ImageSkia image, SkColor expected_color);
     58 
     59 // Wait until all wallpaper loading is done, and WallpaperManager comes into
     60 // a stable state.
     61 void WaitAsyncWallpaperLoadFinished();
     62 
     63 // Initializes default wallpaper paths "*default_*file" and writes JPEG
     64 // wallpaper images to them.
     65 // Only needs to be called (once) by tests that want to test loading of
     66 // default wallpapers.
     67 void CreateCmdlineWallpapers(const base::ScopedTempDir& dir,
     68                              scoped_ptr<base::CommandLine>* command_line);
     69 
     70 }  // namespace wallpaper_manager_test_utils
     71 }  // namespace chromeos
     72 
     73 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USERS_WALLPAPER_WALLPAPER_MANAGER_TEST_UTILS_H_
     74