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// Copyright 2012 The Chromium Authors
// 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_util.h"
#include <memory>
#include <vector>
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkRect.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/image/image_unittest_util.h"
#include "ui/gfx/image/resize_image_dimensions.h"
TEST(ImageUtilTest, JPEGEncodeAndDecode) {
gfx::Image original = gfx::test::CreateImage(100, 100);
std::optional<std::vector<uint8_t>> encoded =
gfx::JPEG1xEncodedDataFromImage(original, /*quality=*/80);
ASSERT_TRUE(encoded.has_value());
gfx::Image decoded = gfx::ImageFrom1xJPEGEncodedData(encoded.value());
// JPEG is lossy, so simply check that the image decoded successfully.
EXPECT_FALSE(decoded.IsEmpty());
}
TEST(ImageUtilTest, GetVisibleMargins) {
gfx::VisibleMargins margins;
// Fully transparent image.
{
SkBitmap bitmap;
bitmap.allocN32Pixels(16, 14);
bitmap.eraseColor(SK_ColorTRANSPARENT);
gfx::ImageSkia img(gfx::ImageSkia::CreateFrom1xBitmap(bitmap));
margins = gfx::GetVisibleMargins(img);
EXPECT_EQ(8, margins.left);
EXPECT_EQ(8, margins.right);
}
// Fully non-transparent image.
{
SkBitmap bitmap;
bitmap.allocN32Pixels(16, 14);
bitmap.eraseColor(SK_ColorYELLOW);
gfx::ImageSkia img(gfx::ImageSkia::CreateFrom1xBitmap(bitmap));
margins = gfx::GetVisibleMargins(img);
EXPECT_EQ(0, margins.left);
EXPECT_EQ(0, margins.right);
}
// Image with non-transparent section in center.
{
SkBitmap bitmap;
bitmap.allocN32Pixels(16, 14);
bitmap.eraseColor(SK_ColorTRANSPARENT);
bitmap.eraseArea(SkIRect::MakeLTRB(3, 2, 13, 13), SK_ColorYELLOW);
gfx::ImageSkia img(gfx::ImageSkia::CreateFrom1xBitmap(bitmap));
margins = gfx::GetVisibleMargins(img);
EXPECT_EQ(3, margins.left);
EXPECT_EQ(3, margins.right);
}
// Image with non-transparent section skewed to one side.
{
SkBitmap bitmap;
bitmap.allocN32Pixels(16, 14);
bitmap.eraseColor(SK_ColorTRANSPARENT);
bitmap.eraseArea(SkIRect::MakeLTRB(3, 2, 5, 5), SK_ColorYELLOW);
gfx::ImageSkia img(gfx::ImageSkia::CreateFrom1xBitmap(bitmap));
margins = gfx::GetVisibleMargins(img);
EXPECT_EQ(3, margins.left);
EXPECT_EQ(11, margins.right);
}
// Image with non-transparent section at leading edge.
{
SkBitmap bitmap;
bitmap.allocN32Pixels(16, 14);
bitmap.eraseColor(SK_ColorTRANSPARENT);
bitmap.eraseArea(SkIRect::MakeLTRB(0, 3, 5, 5), SK_ColorYELLOW);
gfx::ImageSkia img(gfx::ImageSkia::CreateFrom1xBitmap(bitmap));
margins = gfx::GetVisibleMargins(img);
EXPECT_EQ(0, margins.left);
EXPECT_EQ(11, margins.right);
}
// Image with non-transparent section at trailing edge.
{
SkBitmap bitmap;
bitmap.allocN32Pixels(16, 14);
bitmap.eraseColor(SK_ColorTRANSPARENT);
bitmap.eraseArea(SkIRect::MakeLTRB(4, 3, 16, 13), SK_ColorYELLOW);
gfx::ImageSkia img(gfx::ImageSkia::CreateFrom1xBitmap(bitmap));
margins = gfx::GetVisibleMargins(img);
EXPECT_EQ(4, margins.left);
EXPECT_EQ(0, margins.right);
}
// Image with narrow non-transparent section.
{
SkBitmap bitmap;
bitmap.allocN32Pixels(16, 14);
bitmap.eraseColor(SK_ColorTRANSPARENT);
bitmap.eraseArea(SkIRect::MakeLTRB(8, 3, 9, 5), SK_ColorYELLOW);
gfx::ImageSkia img(gfx::ImageSkia::CreateFrom1xBitmap(bitmap));
margins = gfx::GetVisibleMargins(img);
EXPECT_EQ(8, margins.left);
EXPECT_EQ(7, margins.right);
}
// Image with faint pixels.
{
SkBitmap bitmap;
bitmap.allocN32Pixels(16, 14);
bitmap.eraseColor(SkColorSetA(SK_ColorYELLOW, 0x02));
gfx::ImageSkia img(gfx::ImageSkia::CreateFrom1xBitmap(bitmap));
margins = gfx::GetVisibleMargins(img);
EXPECT_EQ(8, margins.left);
EXPECT_EQ(8, margins.right);
}
// Fully transparent image with odd width.
{
SkBitmap bitmap;
bitmap.allocN32Pixels(17, 14);
bitmap.eraseColor(SK_ColorTRANSPARENT);
gfx::ImageSkia img(gfx::ImageSkia::CreateFrom1xBitmap(bitmap));
margins = gfx::GetVisibleMargins(img);
EXPECT_EQ(9, margins.left);
EXPECT_EQ(8, margins.right);
}
}
TEST(ImageUtilTest, ResizedImageForSearchByImage) {
// Make sure the image large enough to let ResizedImageForSearchByImage to
// resize the image.
gfx::Image original_image =
gfx::test::CreateImage(gfx::kSearchByImageMaxImageWidth * 2,
gfx::kSearchByImageMaxImageHeight * 2);
gfx::Image resized_image = gfx::ResizedImageForSearchByImage(original_image);
EXPECT_FALSE(resized_image.IsEmpty());
EXPECT_EQ(resized_image.Width(), gfx::kSearchByImageMaxImageWidth);
EXPECT_EQ(resized_image.Height(), gfx::kSearchByImageMaxImageHeight);
}
TEST(ImageUtilTest, ResizedImageForSearchByImageShouldKeepRatio) {
// Make sure the image large enough to let ResizedImageForSearchByImage to
// resize the image.
gfx::Image original_image = gfx::test::CreateImage(600, 600);
gfx::Image resized_image = gfx::ResizedImageForSearchByImage(original_image);
EXPECT_EQ(resized_image.Width(), 400);
EXPECT_EQ(resized_image.Height(), 400);
}
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