blob: 37f3b833f939346dbdebd1a7d8924ae244a479f5 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Because the unit tests for gfx::Image are spread across multiple
// implementation files, this header contains the reusable components.
#include "ui/gfx/image/image_unittest_util.h"
#include <stddef.h>
#include <cmath>
#include <memory>
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/image/image_skia.h"
#if defined(OS_IOS)
#include "base/mac/scoped_cftyperef.h"
#include "skia/ext/skia_utils_ios.h"
#elif defined(OS_MAC)
#include "base/mac/mac_util.h"
#include "skia/ext/skia_utils_mac.h"
#endif
namespace gfx {
namespace test {
namespace {
// The maximum color shift in the red, green, and blue components caused by
// converting a gfx::Image between colorspaces. Color shifts occur when
// converting between NSImage & UIImage to ImageSkia. Determined by trial and
// error.
const int kMaxColorSpaceConversionColorShift = 40;
bool ColorComponentsClose(SkColor component1,
SkColor component2,
int max_deviation) {
int c1 = static_cast<int>(component1);
int c2 = static_cast<int>(component2);
return std::abs(c1 - c2) <= max_deviation;
}
bool ColorsClose(SkColor color1, SkColor color2, int max_deviation) {
// Be tolerant of floating point rounding and lossy color space conversions.
return ColorComponentsClose(SkColorGetR(color1), SkColorGetR(color2),
max_deviation) &&
ColorComponentsClose(SkColorGetG(color1), SkColorGetG(color2),
max_deviation) &&
ColorComponentsClose(SkColorGetB(color1), SkColorGetB(color2),
max_deviation) &&
ColorComponentsClose(SkColorGetA(color1), SkColorGetA(color2),
max_deviation);
}
} // namespace
std::vector<float> Get1xAnd2xScales() {
std::vector<float> scales;
scales.push_back(1.0f);
scales.push_back(2.0f);
return scales;
}
const SkBitmap CreateBitmap(int width, int height) {
SkBitmap bitmap;
bitmap.allocN32Pixels(width, height);
bitmap.eraseARGB(255, 0, 255, 0);
return bitmap;
}
gfx::ImageSkia CreateImageSkia(int width, int height) {
return gfx::ImageSkia::CreateFrom1xBitmap(CreateBitmap(width, height));
}
scoped_refptr<base::RefCountedMemory> CreatePNGBytes(int edge_size) {
SkBitmap bitmap = CreateBitmap(edge_size, edge_size);
scoped_refptr<base::RefCountedBytes> bytes(new base::RefCountedBytes());
PNGCodec::EncodeBGRASkBitmap(bitmap, false, &bytes->data());
return bytes;
}
gfx::Image CreateImage() {
return CreateImage(100, 50);
}
gfx::Image CreateImage(int width, int height) {
return gfx::Image::CreateFrom1xBitmap(CreateBitmap(width, height));
}
bool AreImagesEqual(const gfx::Image& img1, const gfx::Image& img2) {
return AreImagesClose(img1, img2, 0);
}
bool AreImagesClose(const gfx::Image& img1,
const gfx::Image& img2,
int max_deviation) {
img1.AsImageSkia().EnsureRepsForSupportedScales();
img2.AsImageSkia().EnsureRepsForSupportedScales();
std::vector<gfx::ImageSkiaRep> img1_reps = img1.AsImageSkia().image_reps();
gfx::ImageSkia image_skia2 = img2.AsImageSkia();
if (image_skia2.image_reps().size() != img1_reps.size())
return false;
for (size_t i = 0; i < img1_reps.size(); ++i) {
float scale = img1_reps[i].scale();
const gfx::ImageSkiaRep& image_rep2 = image_skia2.GetRepresentation(scale);
if (image_rep2.scale() != scale ||
!AreBitmapsClose(img1_reps[i].GetBitmap(), image_rep2.GetBitmap(),
max_deviation)) {
return false;
}
}
return true;
}
bool AreBitmapsEqual(const SkBitmap& bmp1, const SkBitmap& bmp2) {
return AreBitmapsClose(bmp1, bmp2, 0);
}
bool AreBitmapsClose(const SkBitmap& bmp1,
const SkBitmap& bmp2,
int max_deviation) {
if (bmp1.isNull() && bmp2.isNull())
return true;
if (bmp1.width() != bmp2.width() ||
bmp1.height() != bmp2.height() ||
bmp1.colorType() != kN32_SkColorType ||
bmp2.colorType() != kN32_SkColorType) {
return false;
}
if (!bmp1.getPixels() || !bmp2.getPixels())
return false;
for (int y = 0; y < bmp1.height(); ++y) {
for (int x = 0; x < bmp1.width(); ++x) {
if (!ColorsClose(bmp1.getColor(x,y), bmp2.getColor(x,y), max_deviation))
return false;
}
}
return true;
}
bool ArePNGBytesCloseToBitmap(base::span<const uint8_t> bytes,
const SkBitmap& bitmap,
int max_deviation) {
SkBitmap decoded;
if (!PNGCodec::Decode(bytes.data(), bytes.size(), &decoded))
return bitmap.isNull();
return AreBitmapsClose(bitmap, decoded, max_deviation);
}
int MaxColorSpaceConversionColorShift() {
return kMaxColorSpaceConversionColorShift;
}
void CheckImageIndicatesPNGDecodeFailure(const gfx::Image& image) {
SkBitmap bitmap = image.AsBitmap();
EXPECT_FALSE(bitmap.isNull());
EXPECT_LE(16, bitmap.width());
EXPECT_LE(16, bitmap.height());
CheckColors(bitmap.getColor(10, 10), SK_ColorRED);
}
bool ImageSkiaStructureMatches(
const gfx::ImageSkia& image_skia,
int width,
int height,
const std::vector<float>& scales) {
if (image_skia.isNull() ||
image_skia.width() != width ||
image_skia.height() != height ||
image_skia.image_reps().size() != scales.size()) {
return false;
}
for (size_t i = 0; i < scales.size(); ++i) {
gfx::ImageSkiaRep image_rep =
image_skia.GetRepresentation(scales[i]);
if (image_rep.is_null() || image_rep.scale() != scales[i])
return false;
if (image_rep.pixel_width() != static_cast<int>(width * scales[i]) ||
image_rep.pixel_height() != static_cast<int>(height * scales[i])) {
return false;
}
}
return true;
}
bool IsEmpty(const gfx::Image& image) {
const SkBitmap& bmp = *image.ToSkBitmap();
return bmp.isNull() ||
(bmp.width() == 0 && bmp.height() == 0);
}
PlatformImage CreatePlatformImage() {
SkBitmap bitmap(CreateBitmap(25, 25));
#if defined(OS_IOS)
float scale = ImageSkia::GetMaxSupportedScale();
if (scale > 1.0) {
// Always create a 25pt x 25pt image.
int size = static_cast<int>(25 * scale);
bitmap = CreateBitmap(size, size);
}
base::ScopedCFTypeRef<CGColorSpaceRef> color_space(
CGColorSpaceCreateDeviceRGB());
UIImage* image =
skia::SkBitmapToUIImageWithColorSpace(bitmap, scale, color_space);
return image;
#elif defined(OS_MAC)
NSImage* image = skia::SkBitmapToNSImageWithColorSpace(
bitmap, base::mac::GetGenericRGBColorSpace());
return image;
#else
return gfx::ImageSkia::CreateFrom1xBitmap(bitmap);
#endif
}
gfx::Image::RepresentationType GetPlatformRepresentationType() {
#if defined(OS_IOS)
return gfx::Image::kImageRepCocoaTouch;
#elif defined(OS_MAC)
return gfx::Image::kImageRepCocoa;
#else
return gfx::Image::kImageRepSkia;
#endif
}
PlatformImage ToPlatformType(const gfx::Image& image) {
#if defined(OS_IOS)
return image.ToUIImage();
#elif defined(OS_MAC)
return image.ToNSImage();
#else
return image.AsImageSkia();
#endif
}
gfx::Image CopyViaPlatformType(const gfx::Image& image) {
#if defined(OS_IOS)
return gfx::Image(image.ToUIImage());
#elif defined(OS_MAC)
return gfx::Image(image.ToNSImage());
#else
return gfx::Image(image.AsImageSkia());
#endif
}
#if defined(OS_APPLE)
// Defined in image_unittest_util_mac.mm.
#else
SkColor GetPlatformImageColor(PlatformImage image, int x, int y) {
return image.bitmap()->getColor(x, y);
}
#endif
void CheckColors(SkColor color1, SkColor color2) {
EXPECT_TRUE(ColorsClose(color1, color2, MaxColorSpaceConversionColorShift()));
}
void CheckIsTransparent(SkColor color) {
EXPECT_LT(SkColorGetA(color) / 255.0, 0.05);
}
bool IsPlatformImageValid(PlatformImage image) {
#if defined(OS_APPLE)
return image != NULL;
#else
return !image.isNull();
#endif
}
bool PlatformImagesEqual(PlatformImage image1, PlatformImage image2) {
#if defined(OS_APPLE)
return image1 == image2;
#else
return image1.BackedBySameObjectAs(image2);
#endif
}
} // namespace test
} // namespace gfx