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      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 // Because the unit tests for gfx::Image are spread across multiple
      6 // implementation files, this header contains the reusable components.
      7 
      8 #ifndef UI_GFX_IMAGE_IMAGE_UNITTEST_UTIL_H_
      9 #define UI_GFX_IMAGE_IMAGE_UNITTEST_UTIL_H_
     10 
     11 #include "ui/gfx/image/image.h"
     12 #include "third_party/skia/include/core/SkColor.h"
     13 
     14 namespace gfx {
     15 namespace test {
     16 
     17 #if defined(OS_IOS)
     18 typedef UIImage* PlatformImage;
     19 #elif defined(OS_MACOSX)
     20 typedef NSImage* PlatformImage;
     21 #else
     22 typedef gfx::ImageSkia PlatformImage;
     23 #endif
     24 
     25 std::vector<float> Get1xAnd2xScales();
     26 
     27 // Create a bitmap of |width|x|height|.
     28 const SkBitmap CreateBitmap(int width, int height);
     29 
     30 // Creates an ImageSkia of |width|x|height| DIP with bitmap data for an
     31 // arbitrary scale factor.
     32 gfx::ImageSkia CreateImageSkia(int width, int height);
     33 
     34 // Returns PNG encoded bytes for a bitmap of |edge_size|x|edge_size|.
     35 scoped_refptr<base::RefCountedMemory> CreatePNGBytes(int edge_size);
     36 
     37 // TODO(rohitrao): Remove the no-argument version of CreateImage().
     38 gfx::Image CreateImage();
     39 gfx::Image CreateImage(int width, int height);
     40 
     41 // Returns true if the images are equal. Converts the images to ImageSkia to
     42 // compare them.
     43 bool IsEqual(const gfx::Image& image1, const gfx::Image& image2);
     44 
     45 bool IsEqual(const SkBitmap& bitmap1, const SkBitmap& bitmap2);
     46 
     47 bool IsEqual(const scoped_refptr<base::RefCountedMemory>& bytes,
     48              const SkBitmap& bitmap);
     49 
     50 // An image which was not successfully decoded to PNG should be a red bitmap.
     51 // Fails if the bitmap is not red.
     52 void CheckImageIndicatesPNGDecodeFailure(const gfx::Image& image);
     53 
     54 // Returns true if the structure of |image_skia| matches the structure
     55 // described by |width|, |height|, and |scale_factors|.
     56 // The structure matches if:
     57 // - |image_skia| is non null.
     58 // - |image_skia| has ImageSkiaReps of |scale_factors|.
     59 // - Each of the ImageSkiaReps has a pixel size of |image_skia|.size() *
     60 //   scale_factor.
     61 bool ImageSkiaStructureMatches(
     62     const gfx::ImageSkia& image_skia,
     63     int width,
     64     int height,
     65     const std::vector<float>& scale_factors);
     66 
     67 bool IsEmpty(const gfx::Image& image);
     68 
     69 PlatformImage CreatePlatformImage();
     70 
     71 gfx::Image::RepresentationType GetPlatformRepresentationType();
     72 
     73 PlatformImage ToPlatformType(const gfx::Image& image);
     74 PlatformImage CopyPlatformType(const gfx::Image& image);
     75 
     76 SkColor GetPlatformImageColor(PlatformImage image, int x, int y);
     77 void CheckColors(SkColor color1, SkColor color2);
     78 void CheckIsTransparent(SkColor color);
     79 
     80 bool IsPlatformImageValid(PlatformImage image);
     81 
     82 bool PlatformImagesEqual(PlatformImage image1, PlatformImage image2);
     83 
     84 }  // namespace test
     85 }  // namespace gfx
     86 
     87 #endif  // UI_GFX_IMAGE_IMAGE_UNITTEST_UTIL_H_
     88