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// 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.
#include "ui/gfx/image/image_skia.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/base/layout.h"
#include "ui/gfx/image/image_skia_rep.h"
#include "ui/gfx/image/image_skia_source.h"
#include "ui/gfx/size.h"
namespace gfx {
namespace {
class FixedSource : public ImageSkiaSource {
public:
FixedSource(const ImageSkiaRep& image) : image_(image) {}
virtual ~FixedSource() {
}
virtual ImageSkiaRep GetImageForScale(ui::ScaleFactor scale_factor) OVERRIDE {
return image_;
}
private:
ImageSkiaRep image_;
DISALLOW_COPY_AND_ASSIGN(FixedSource);
};
class DynamicSource : public ImageSkiaSource {
public:
DynamicSource(const gfx::Size& size) : size_(size) {}
virtual ~DynamicSource() {
}
virtual ImageSkiaRep GetImageForScale(ui::ScaleFactor scale_factor) OVERRIDE {
return gfx::ImageSkiaRep(size_, scale_factor);
}
private:
gfx::Size size_;
DISALLOW_COPY_AND_ASSIGN(DynamicSource);
};
class NullSource: public ImageSkiaSource {
public:
NullSource() {
}
virtual ~NullSource() {
}
virtual ImageSkiaRep GetImageForScale(ui::ScaleFactor scale_factor) OVERRIDE {
return gfx::ImageSkiaRep();
}
private:
DISALLOW_COPY_AND_ASSIGN(NullSource);
};
} // namespace
TEST(ImageSkiaTest, FixedSource) {
ImageSkiaRep image(Size(100, 200), ui::SCALE_FACTOR_100P);
ImageSkia image_skia(new FixedSource(image), Size(100, 200));
EXPECT_EQ(0U, image_skia.image_reps().size());
const ImageSkiaRep& result_100p =
image_skia.GetRepresentation(ui::SCALE_FACTOR_100P);
EXPECT_EQ(100, result_100p.GetWidth());
EXPECT_EQ(200, result_100p.GetHeight());
EXPECT_EQ(ui::SCALE_FACTOR_100P, result_100p.scale_factor());
EXPECT_EQ(1U, image_skia.image_reps().size());
const ImageSkiaRep& result_200p =
image_skia.GetRepresentation(ui::SCALE_FACTOR_200P);
EXPECT_EQ(100, result_200p.GetWidth());
EXPECT_EQ(200, result_200p.GetHeight());
EXPECT_EQ(100, result_200p.pixel_width());
EXPECT_EQ(200, result_200p.pixel_height());
EXPECT_EQ(ui::SCALE_FACTOR_100P, result_200p.scale_factor());
EXPECT_EQ(1U, image_skia.image_reps().size());
// Get the representation again and make sure it doesn't
// generate new image skia rep.
image_skia.GetRepresentation(ui::SCALE_FACTOR_100P);
image_skia.GetRepresentation(ui::SCALE_FACTOR_200P);
EXPECT_EQ(1U, image_skia.image_reps().size());
}
TEST(ImageSkiaTest, DynamicSource) {
ImageSkia image_skia(new DynamicSource(Size(100, 200)), Size(100, 200));
EXPECT_EQ(0U, image_skia.image_reps().size());
const ImageSkiaRep& result_100p =
image_skia.GetRepresentation(ui::SCALE_FACTOR_100P);
EXPECT_EQ(100, result_100p.GetWidth());
EXPECT_EQ(200, result_100p.GetHeight());
EXPECT_EQ(ui::SCALE_FACTOR_100P, result_100p.scale_factor());
EXPECT_EQ(1U, image_skia.image_reps().size());
const ImageSkiaRep& result_200p =
image_skia.GetRepresentation(ui::SCALE_FACTOR_200P);
EXPECT_EQ(100, result_200p.GetWidth());
EXPECT_EQ(200, result_200p.GetHeight());
EXPECT_EQ(200, result_200p.pixel_width());
EXPECT_EQ(400, result_200p.pixel_height());
EXPECT_EQ(ui::SCALE_FACTOR_200P, result_200p.scale_factor());
EXPECT_EQ(2U, image_skia.image_reps().size());
// Get the representation again and make sure it doesn't
// generate new image skia rep.
image_skia.GetRepresentation(ui::SCALE_FACTOR_100P);
EXPECT_EQ(2U, image_skia.image_reps().size());
image_skia.GetRepresentation(ui::SCALE_FACTOR_200P);
EXPECT_EQ(2U, image_skia.image_reps().size());
}
#if defined(OS_MACOSX)
// Tests that GetRepresentations returns all of the representations in the
// image when there are multiple representations for a scale factor.
// This currently is the case with ImageLoadingTracker::LoadImages, to
// load the application shortcut icon on Mac in particular.
TEST(ImageSkiaTest, GetRepresentationsManyRepsPerScaleFactor) {
const int kSmallIcon1x = 16;
const int kSmallIcon2x = 32;
const int kLargeIcon1x = 32;
ImageSkia image(new NullSource(), gfx::Size(kSmallIcon1x, kSmallIcon1x));
// Simulate a source which loads images on a delay. Upon
// GetImageForScaleFactor, it immediately returns null and starts loading
// image reps slowly.
image.GetRepresentation(ui::SCALE_FACTOR_100P);
image.GetRepresentation(ui::SCALE_FACTOR_200P);
// After a lengthy amount of simulated time, finally loaded image reps.
image.AddRepresentation(ImageSkiaRep(
gfx::Size(kSmallIcon1x, kSmallIcon1x), ui::SCALE_FACTOR_100P));
image.AddRepresentation(ImageSkiaRep(
gfx::Size(kSmallIcon2x, kSmallIcon2x), ui::SCALE_FACTOR_200P));
image.AddRepresentation(ImageSkiaRep(
gfx::Size(kLargeIcon1x, kLargeIcon1x), ui::SCALE_FACTOR_100P));
std::vector<ImageSkiaRep> image_reps = image.GetRepresentations();
EXPECT_EQ(3u, image_reps.size());
int num_1x = 0;
int num_2x = 0;
for (size_t i = 0; i < image_reps.size(); ++i) {
if (image_reps[i].scale_factor() == ui::SCALE_FACTOR_100P)
num_1x++;
else if (image_reps[i].scale_factor() == ui::SCALE_FACTOR_200P)
num_2x++;
}
EXPECT_EQ(2, num_1x);
EXPECT_EQ(1, num_2x);
}
#endif // OS_MACOSX
TEST(ImageSkiaTest, GetBitmap) {
ImageSkia image_skia(new DynamicSource(Size(100, 200)), Size(100, 200));
const SkBitmap* bitmap = image_skia.bitmap();
EXPECT_NE(static_cast<SkBitmap*>(NULL), bitmap);
EXPECT_FALSE(bitmap->isNull());
}
TEST(ImageSkiaTest, GetBitmapFromEmpty) {
// Create an image with 1 representation and remove it so the ImageSkiaStorage
// is left with no representations.
ImageSkia empty_image(ImageSkiaRep(Size(100, 200), ui::SCALE_FACTOR_100P));
ImageSkia empty_image_copy(empty_image);
empty_image.RemoveRepresentation(ui::SCALE_FACTOR_100P);
// Check that ImageSkia::bitmap() still returns a valid SkBitmap pointer for
// the image and all its copies.
const SkBitmap* bitmap = empty_image_copy.bitmap();
ASSERT_NE(static_cast<SkBitmap*>(NULL), bitmap);
EXPECT_TRUE(bitmap->isNull());
EXPECT_TRUE(bitmap->empty());
}
#if defined(OS_WIN)
TEST(ImageSkiaTest, OperatorBitmapFromSource) {
ImageSkia image_skia(new DynamicSource(Size(100, 200)), Size(100, 200));
// ImageSkia should use the source to create the bitmap.
const SkBitmap& bitmap = image_skia;
ASSERT_NE(static_cast<SkBitmap*>(NULL), &bitmap);
EXPECT_FALSE(bitmap.isNull());
}
#endif
TEST(ImageSkiaTest, BackedBySameObjectAs) {
// Null images should all be backed by the same object (NULL).
ImageSkia image;
ImageSkia unrelated;
EXPECT_TRUE(image.BackedBySameObjectAs(unrelated));
image.AddRepresentation(gfx::ImageSkiaRep(gfx::Size(10, 10),
ui::SCALE_FACTOR_100P));
ImageSkia copy = image;
copy.AddRepresentation(gfx::ImageSkiaRep(gfx::Size(10, 10),
ui::SCALE_FACTOR_200P));
unrelated.AddRepresentation(gfx::ImageSkiaRep(gfx::Size(10, 10),
ui::SCALE_FACTOR_100P));
EXPECT_TRUE(image.BackedBySameObjectAs(copy));
EXPECT_FALSE(image.BackedBySameObjectAs(unrelated));
EXPECT_FALSE(copy.BackedBySameObjectAs(unrelated));
}
} // namespace gfx
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