| // 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/canvas.h" |
| |
| #include <limits> |
| |
| #include "base/strings/utf_string_conversions.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "ui/gfx/font_list.h" |
| #include "ui/gfx/geometry/rect.h" |
| #include "ui/gfx/geometry/rect_f.h" |
| #include "ui/gfx/skia_util.h" |
| |
| namespace gfx { |
| |
| class CanvasTest : public testing::Test { |
| protected: |
| int GetStringWidth(const char *text) { |
| return Canvas::GetStringWidth(base::UTF8ToUTF16(text), font_list_); |
| } |
| |
| gfx::Size SizeStringInt(const char *text, int width, int line_height) { |
| base::string16 text16 = base::UTF8ToUTF16(text); |
| int height = 0; |
| int flags = |
| (text16.find('\n') != base::string16::npos) ? Canvas::MULTI_LINE : 0; |
| Canvas::SizeStringInt(text16, font_list_, &width, &height, line_height, |
| flags); |
| return gfx::Size(width, height); |
| } |
| |
| private: |
| FontList font_list_; |
| }; |
| |
| #if defined(OS_ANDROID) |
| #define MAYBE_StringWidth DISABLED_StringWidth |
| #else |
| #define MAYBE_StringWidth StringWidth |
| #endif |
| TEST_F(CanvasTest, MAYBE_StringWidth) { |
| EXPECT_GT(GetStringWidth("Test"), 0); |
| } |
| |
| TEST_F(CanvasTest, StringWidthEmptyString) { |
| EXPECT_EQ(0, GetStringWidth("")); |
| } |
| |
| #if defined(OS_ANDROID) |
| #define MAYBE_StringSizeEmptyString DISABLED_StringSizeEmptyString |
| #else |
| #define MAYBE_StringSizeEmptyString StringSizeEmptyString |
| #endif |
| TEST_F(CanvasTest, MAYBE_StringSizeEmptyString) { |
| gfx::Size size = SizeStringInt("", 0, 0); |
| EXPECT_EQ(0, size.width()); |
| EXPECT_GT(size.height(), 0); |
| } |
| |
| // Verifies GetClipBounds() returns the correct value. |
| TEST_F(CanvasTest, ClipRectWithScaling) { |
| Canvas canvas(gfx::Size(200, 100), 2.25, true); |
| canvas.sk_canvas()->clipRect(RectFToSkRect(gfx::RectF(100, 0, 20, 1.7f))); |
| gfx::Rect clip_rect; |
| ASSERT_TRUE(canvas.GetClipBounds(&clip_rect)); |
| // Use Contains() rather than Equals() as skia may extend the rect in certain |
| // directions. None-the-less the clip must contain the region we damaged. |
| EXPECT_TRUE(clip_rect.Contains(gfx::Rect(100, 0, 20, 2))); |
| } |
| |
| // 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 |