OLD | NEW |
| (Empty) |
1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "ui/gfx/canvas.h" | |
6 | |
7 #include <cmath> | |
8 | |
9 #import <Cocoa/Cocoa.h> | |
10 | |
11 #include "base/strings/utf_string_conversions.h" | |
12 #include "base/strings/sys_string_conversions.h" | |
13 #include "testing/gtest/include/gtest/gtest.h" | |
14 #include "ui/gfx/font.h" | |
15 #include "ui/gfx/font_list.h" | |
16 | |
17 namespace gfx { | |
18 | |
19 namespace { | |
20 | |
21 // Returns the pixel width of the string via calling the native method | |
22 // -sizeWithAttributes. | |
23 float GetStringNativeWidth(const base::string16& text, | |
24 const FontList& font_list) { | |
25 NSFont* native_font = font_list.GetPrimaryFont().GetNativeFont(); | |
26 NSString* ns_string = base::SysUTF16ToNSString(text); | |
27 NSDictionary* attributes = | |
28 [NSDictionary dictionaryWithObject:native_font | |
29 forKey:NSFontAttributeName]; | |
30 return [ns_string sizeWithAttributes:attributes].width; | |
31 } | |
32 | |
33 } // namespace | |
34 | |
35 class CanvasTestMac : public testing::Test { | |
36 protected: | |
37 // Compare the size returned by Canvas::SizeStringInt to the size generated | |
38 // by the platform-specific version in CanvasMac_SizeStringInt. Will generate | |
39 // expectation failure on any mismatch. Only works for single-line text | |
40 // without specified line height, since that is all the platform | |
41 // implementation supports. | |
42 void CompareSizes(const char* text) { | |
43 const float kReallyLargeNumber = 12345678; | |
44 FontList font_list(font_); | |
45 base::string16 text16 = base::UTF8ToUTF16(text); | |
46 | |
47 float mac_width = GetStringNativeWidth(text16, font_list); | |
48 int mac_height = font_list.GetHeight(); | |
49 | |
50 float canvas_width = kReallyLargeNumber; | |
51 float canvas_height = kReallyLargeNumber; | |
52 Canvas::SizeStringFloat( | |
53 text16, font_list, &canvas_width, &canvas_height, 0, 0); | |
54 | |
55 EXPECT_NE(kReallyLargeNumber, mac_width) << "no width for " << text; | |
56 EXPECT_NE(kReallyLargeNumber, mac_height) << "no height for " << text; | |
57 EXPECT_EQ(mac_width, canvas_width) << " width for " << text; | |
58 // FontList::GetHeight returns a truncated height. | |
59 EXPECT_EQ(mac_height, | |
60 static_cast<int>(canvas_height)) << " height for " << text; | |
61 } | |
62 | |
63 private: | |
64 Font font_; | |
65 }; | |
66 | |
67 // Tests that Canvas' SizeStringFloat yields result consistent with a native | |
68 // implementation. | |
69 TEST_F(CanvasTestMac, StringSizeIdenticalForSkia) { | |
70 CompareSizes(""); | |
71 CompareSizes("Foo"); | |
72 CompareSizes("Longword"); | |
73 CompareSizes("This is a complete sentence."); | |
74 } | |
75 | |
76 TEST_F(CanvasTestMac, FractionalWidth) { | |
77 const float kReallyLargeNumber = 12345678; | |
78 float width = kReallyLargeNumber; | |
79 float height = kReallyLargeNumber; | |
80 | |
81 FontList font_list; | |
82 Canvas::SizeStringFloat( | |
83 base::UTF8ToUTF16("Test"), font_list, &width, &height, 0, 0); | |
84 | |
85 EXPECT_GT(width, static_cast<int>(width)); | |
86 } | |
87 | |
88 } // namespace gfx | |
OLD | NEW |