| // Copyright 2013 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 <cmath> |
| |
| #import <Cocoa/Cocoa.h> |
| |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/strings/sys_string_conversions.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "ui/gfx/font.h" |
| #include "ui/gfx/font_list.h" |
| |
| namespace gfx { |
| |
| namespace { |
| |
| // Returns the pixel width of the string via calling the native method |
| // -sizeWithAttributes. |
| float GetStringNativeWidth(const base::string16& text, |
| const FontList& font_list) { |
| NSFont* native_font = font_list.GetPrimaryFont().GetNativeFont(); |
| NSString* ns_string = base::SysUTF16ToNSString(text); |
| NSDictionary* attributes = |
| [NSDictionary dictionaryWithObject:native_font |
| forKey:NSFontAttributeName]; |
| return [ns_string sizeWithAttributes:attributes].width; |
| } |
| |
| } // namespace |
| |
| class CanvasTestMac : public testing::Test { |
| protected: |
| // Compare the size returned by Canvas::SizeStringInt to the size generated |
| // by the platform-specific version in CanvasMac_SizeStringInt. Will generate |
| // expectation failure on any mismatch. Only works for single-line text |
| // without specified line height, since that is all the platform |
| // implementation supports. |
| void CompareSizes(const char* text) { |
| const float kReallyLargeNumber = 12345678; |
| FontList font_list(font_); |
| base::string16 text16 = base::UTF8ToUTF16(text); |
| |
| float mac_width = GetStringNativeWidth(text16, font_list); |
| int mac_height = font_list.GetHeight(); |
| |
| float canvas_width = kReallyLargeNumber; |
| float canvas_height = kReallyLargeNumber; |
| Canvas::SizeStringFloat( |
| text16, font_list, &canvas_width, &canvas_height, 0, 0); |
| |
| EXPECT_NE(kReallyLargeNumber, mac_width) << "no width for " << text; |
| EXPECT_NE(kReallyLargeNumber, mac_height) << "no height for " << text; |
| EXPECT_EQ(mac_width, canvas_width) << " width for " << text; |
| // FontList::GetHeight returns a truncated height. |
| EXPECT_EQ(mac_height, |
| static_cast<int>(canvas_height)) << " height for " << text; |
| } |
| |
| private: |
| Font font_; |
| }; |
| |
| // Tests that Canvas' SizeStringFloat yields result consistent with a native |
| // implementation. |
| TEST_F(CanvasTestMac, StringSizeIdenticalForSkia) { |
| CompareSizes(""); |
| CompareSizes("Foo"); |
| CompareSizes("Longword"); |
| CompareSizes("This is a complete sentence."); |
| } |
| |
| TEST_F(CanvasTestMac, FractionalWidth) { |
| const float kReallyLargeNumber = 12345678; |
| float width = kReallyLargeNumber; |
| float height = kReallyLargeNumber; |
| |
| FontList font_list; |
| Canvas::SizeStringFloat( |
| base::UTF8ToUTF16("Test"), font_list, &width, &height, 0, 0); |
| |
| EXPECT_GT(width, static_cast<int>(width)); |
| } |
| |
| } // namespace gfx |