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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 <limits>
#include "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/font.h"
namespace gfx {
class CanvasTest : public testing::Test {
protected:
int GetStringWidth(const char *text) {
return Canvas::GetStringWidth(UTF8ToUTF16(text), font_);
}
gfx::Size SizeStringInt(const char *text, int width, int line_height) {
base::string16 text16 = UTF8ToUTF16(text);
int height = 0;
int flags =
(text16.find('\n') != base::string16::npos) ? Canvas::MULTI_LINE : 0;
Canvas::SizeStringInt(text16, font_, &width, &height, line_height, flags);
return gfx::Size(width, height);
}
private:
gfx::Font font_;
};
TEST_F(CanvasTest, StringWidth) {
EXPECT_GT(GetStringWidth("Test"), 0);
}
TEST_F(CanvasTest, StringWidthEmptyString) {
EXPECT_EQ(0, GetStringWidth(""));
}
TEST_F(CanvasTest, StringSizeEmptyString) {
gfx::Size size = SizeStringInt("", 0, 0);
EXPECT_EQ(0, size.width());
EXPECT_GT(size.height(), 0);
}
// Line height is only supported on Skia.
#if defined(OS_MACOSX) || defined(OS_ANDROID)
#define MAYBE_StringSizeWithLineHeight DISABLED_StringSizeWithLineHeight
#else
#define MAYBE_StringSizeWithLineHeight StringSizeWithLineHeight
#endif
TEST_F(CanvasTest, MAYBE_StringSizeWithLineHeight) {
gfx::Size one_line_size = SizeStringInt("Q", 0, 0);
gfx::Size four_line_size = SizeStringInt("Q\nQ\nQ\nQ", 1000000, 1000);
EXPECT_EQ(one_line_size.width(), four_line_size.width());
EXPECT_EQ(3 * 1000 + one_line_size.height(), four_line_size.height());
}
} // namespace gfx
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