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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/base/layout.h"
     12 #include "ui/gfx/image/image.h"
     13 #include "third_party/skia/include/core/SkColor.h"
     14 
     15 namespace gfx {
     16 namespace test {
     17 
     18 #if defined(OS_IOS)
     19 typedef UIImage* PlatformImage;
     20 #elif defined(OS_MACOSX)
     21 typedef NSImage* PlatformImage;
     22 #elif defined(TOOLKIT_GTK)
     23 typedef GdkPixbuf* PlatformImage;
     24 #else
     25 typedef gfx::ImageSkia PlatformImage;
     26 #endif
     27 
     28 std::vector<ui::ScaleFactor> Get1xAnd2xScaleFactors();
     29 
     30 // Create a bitmap of |width|x|height|.
     31 const SkBitmap CreateBitmap(int width, int height);
     32 
     33 // Creates an ImageSkia of |width|x|height| DIP with bitmap data for an
     34 // arbitrary scale factor.
     35 gfx::ImageSkia CreateImageSkia(int width, int height);
     36 
     37 // Returns PNG encoded bytes for a bitmap of |edge_size|x|edge_size|.
     38 scoped_refptr<base::RefCountedMemory> CreatePNGBytes(int edge_size);
     39 
     40 // TODO(rohitrao): Remove the no-argument version of CreateImage().
     41 gfx::Image CreateImage();
     42 gfx::Image CreateImage(int width, int height);
     43 
     44 // Returns true if the images are equal. Converts the images to ImageSkia to
     45 // compare them.
     46 bool IsEqual(const gfx::Image& image1, const gfx::Image& image2);
     47 
     48 bool IsEqual(const SkBitmap& bitmap1, const SkBitmap& bitmap2);
     49 
     50 bool IsEqual(const scoped_refptr<base::RefCountedMemory>& bytes,
     51              const SkBitmap& bitmap);
     52 
     53 // An image which was not successfully decoded to PNG should be a red bitmap.
     54 // Fails if the bitmap is not red.
     55 void CheckImageIndicatesPNGDecodeFailure(const gfx::Image& image);
     56 
     57 // Returns true if the structure of |image_skia| matches the structure
     58 // described by |width|, |height|, and |scale_factors|.
     59 // The structure matches if:
     60 // - |image_skia| is non null.
     61 // - |image_skia| has ImageSkiaReps of |scale_factors|.
     62 // - Each of the ImageSkiaReps has a pixel size of |image_skia|.size() *
     63 //   scale_factor.
     64 bool ImageSkiaStructureMatches(
     65     const gfx::ImageSkia& image_skia,
     66     int width,
     67     int height,
     68     const std::vector<ui::ScaleFactor>& scale_factors);
     69 
     70 bool IsEmpty(const gfx::Image& image);
     71 
     72 PlatformImage CreatePlatformImage();
     73 
     74 gfx::Image::RepresentationType GetPlatformRepresentationType();
     75 
     76 PlatformImage ToPlatformType(const gfx::Image& image);
     77 PlatformImage CopyPlatformType(const gfx::Image& image);
     78 
     79 SkColor GetPlatformImageColor(PlatformImage image, int x, int y);
     80 void CheckColors(SkColor color1, SkColor color2);
     81 void CheckIsTransparent(SkColor color);
     82 
     83 bool IsPlatformImageValid(PlatformImage image);
     84 
     85 bool PlatformImagesEqual(PlatformImage image1, PlatformImage image2);
     86 
     87 }  // namespace test
     88 }  // namespace gfx
     89 
     90 #endif  // UI_GFX_IMAGE_IMAGE_UNITTEST_UTIL_H_
     91