cc/test/pixel_test_utils.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 CC_TEST_PIXEL_TEST_UTILS_H_
   6 #define CC_TEST_PIXEL_TEST_UTILS_H_
   7
   8 #include "base/files/file_path.h"
   9 #include "cc/test/pixel_comparator.h"
  10
  11 class SkBitmap;
  12
  13 namespace cc {
  14
  15 // Encodes a bitmap into a PNG and write to disk. Returns true on success. The
  16 // parent directory does not have to exist.
  17 bool WritePNGFile(const SkBitmap& bitmap, const base::FilePath& file_path,
  18     bool discard_transparency);
  19
  20 // Reads and decodes a PNG image to a bitmap. Returns true on success. The PNG
  21 // should have been encoded using |gfx::PNGCodec::Encode|.
  22 bool ReadPNGFile(const base::FilePath& file_path, SkBitmap* bitmap);
  23
  24 // Compares with a PNG file on disk using the given PixelComparator, and returns
  25 // true if the comparator returns a match. |ref_img_path| is absolute.
  26 bool MatchesPNGFile(const SkBitmap& gen_bmp,
  27                     base::FilePath ref_img_path,
  28                     const PixelComparator& comparator);
  29
  30 }  // namespace cc
  31
  32 #endif  // CC_TEST_PIXEL_TEST_UTILS_H_