#include "base/memory/scoped_ptr.h"
#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"
TEST(ImageUtilTest, JPEGEncodeAndDecode) {
// JPEG is lossy, so simply check that the image decoded successfully.
EXPECT_FALSE(decoded.IsEmpty());
}
+
+TEST(ImageUtilTest, TestVisibleMargins) {
+ // Image with non-transparent piece should return margins at those
+ // columns.
+ SkBitmap bitmap1;
+ bitmap1.setConfig(SkBitmap::kARGB_8888_Config, 16, 16);
+ bitmap1.allocPixels();
+ bitmap1.eraseColor(SK_ColorTRANSPARENT);
+ bitmap1.eraseArea(SkIRect::MakeLTRB(3, 3, 14, 14), SK_ColorYELLOW);
+ gfx::ImageSkia img = gfx::ImageSkia::CreateFrom1xBitmap(bitmap1);
+ int x = 0;
+ int y = 0;
+ gfx::VisibleMargins(img, &x, &y);
+ EXPECT_EQ(3, x);
+ EXPECT_EQ(13, y);
+ EXPECT_EQ(16, img.width());
+
+ // Full-width-transparent image should return margins in the center
+ // of the image.
+ SkBitmap bitmap2;
+ bitmap2.setConfig(SkBitmap::kARGB_8888_Config, 16, 16);
+ bitmap2.allocPixels();
+ bitmap2.eraseColor(SK_ColorTRANSPARENT);
+ gfx::ImageSkia img_transparent = gfx::ImageSkia::CreateFrom1xBitmap(bitmap2);
+ x = 0;
+ y = 0;
+ gfx::VisibleMargins(img_transparent, &x, &y);
+ EXPECT_EQ(8, x);
+ EXPECT_EQ(9, y);
+ EXPECT_EQ(16, img_transparent.width());
+
+ // Image with non-transparent piece that is skewed to one side should
+ // return margins at those columns.
+ SkBitmap bitmap3;
+ bitmap3.setConfig(SkBitmap::kARGB_8888_Config, 16, 16);
+ bitmap3.allocPixels();
+ bitmap3.eraseColor(SK_ColorTRANSPARENT);
+ bitmap3.eraseArea(SkIRect::MakeLTRB(3, 3, 5, 5), SK_ColorYELLOW);
+ gfx::ImageSkia img3 = gfx::ImageSkia::CreateFrom1xBitmap(bitmap3);
+ x = 0;
+ y = 0;
+ gfx::VisibleMargins(img3, &x, &y);
+ EXPECT_EQ(3, x);
+ EXPECT_EQ(4, y);
+ EXPECT_EQ(16, img3.width());
+
+ // Image with non-transparent piece that is at one edge should
+ // return margins at those columns.
+ SkBitmap bitmap4;
+ bitmap4.setConfig(SkBitmap::kARGB_8888_Config, 16, 16);
+ bitmap4.allocPixels();
+ bitmap4.eraseColor(SK_ColorTRANSPARENT);
+ bitmap4.eraseArea(SkIRect::MakeLTRB(0, 3, 5, 5), SK_ColorYELLOW);
+ gfx::ImageSkia img4 = gfx::ImageSkia::CreateFrom1xBitmap(bitmap4);
+ x = 0;
+ y = 0;
+ gfx::VisibleMargins(img4, &x, &y);
+ EXPECT_EQ(0, x);
+ EXPECT_EQ(4, y);
+ EXPECT_EQ(16, img4.width());
+
+ // Image with non-transparent piece that is at trailing edge should
+ // return margins at those columns.
+ SkBitmap bitmap5;
+ bitmap5.setConfig(SkBitmap::kARGB_8888_Config, 16, 16);
+ bitmap5.allocPixels();
+ bitmap5.eraseColor(SK_ColorTRANSPARENT);
+ bitmap5.eraseArea(SkIRect::MakeLTRB(4, 3, 16, 16), SK_ColorYELLOW);
+ gfx::ImageSkia img5 = gfx::ImageSkia::CreateFrom1xBitmap(bitmap5);
+ x = 0;
+ y = 0;
+ gfx::VisibleMargins(img5, &x, &y);
+ EXPECT_EQ(4, x);
+ EXPECT_EQ(15, y);
+ EXPECT_EQ(16, img5.width());
+}