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1// Copyright (c) 2011 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 "content/common/mac/font_descriptor.h"
6
7#include <Cocoa/Cocoa.h>
8
9#include "base/logging.h"
10#include "base/strings/sys_string_conversions.h"
11#include "base/strings/utf_string_conversions.h"
12#include "testing/gtest_mac.h"
13#include "testing/platform_test.h"
14
15namespace {
16
17class FontSerializationTest : public PlatformTest {};
18
19const std::string kCourierFontName("Courier");
20
21// Compare 2 fonts, make sure they point at the same font definition and have
22// the same style.  Only Bold & Italic style attributes are tested since those
23// are the only ones we care about at the moment.
24bool CompareFonts(NSFont* font1, NSFont* font2) {
25  ATSFontRef id1 = CTFontGetPlatformFont(reinterpret_cast<CTFontRef>(font1), 0);
26  ATSFontRef id2 = CTFontGetPlatformFont(reinterpret_cast<CTFontRef>(font2), 0);
27
28  if (id1 != id2) {
29    DLOG(ERROR) << "ATSFontRefs for "
30        << [[font1 fontName] UTF8String]
31        << " and "
32        << [[font2 fontName] UTF8String]
33        << " are different";
34    return false;
35  }
36
37  CGFloat size1 = [font1 pointSize];
38  CGFloat size2 = [font2 pointSize];
39  if (size1 != size2) {
40    DLOG(ERROR) << "font sizes for "
41        << [[font1 fontName] UTF8String] << " (" << size1 << ")"
42        << "and"
43        << [[font2 fontName] UTF8String]  << " (" << size2 << ")"
44        << " are different";
45    return false;
46  }
47
48  NSFontTraitMask traits1 = [[NSFontManager sharedFontManager]
49                                traitsOfFont:font1];
50  NSFontTraitMask traits2 = [[NSFontManager sharedFontManager]
51                                traitsOfFont:font2];
52
53  bool is_bold1 = traits1 & NSBoldFontMask;
54  bool is_bold2 = traits2 & NSBoldFontMask;
55  bool is_italic1 = traits1 & NSItalicFontMask;
56  bool is_italic2 = traits2 & NSItalicFontMask;
57
58  if (is_bold1 != is_bold2 || is_italic1 != is_italic2) {
59    DLOG(ERROR) << "Style information for "
60        << [[font1 fontName] UTF8String]
61        << " and "
62        << [[font2 fontName] UTF8String]
63        << " are different";
64        return false;
65  }
66
67  return true;
68}
69
70// Create an NSFont via a FontDescriptor object.
71NSFont* MakeNSFont(const std::string& font_name, float font_point_size) {
72  FontDescriptor desc;
73  desc.font_name = UTF8ToUTF16(font_name);
74  desc.font_point_size = font_point_size;
75  return desc.ToNSFont();
76}
77
78// Verify that serialization and deserialization of fonts with various styles
79// is performed correctly by FontDescriptor.
80TEST_F(FontSerializationTest, StyledFonts) {
81  NSFont* plain_font = [NSFont systemFontOfSize:12.0];
82  ASSERT_TRUE(plain_font != nil);
83  FontDescriptor desc_plain(plain_font);
84  EXPECT_TRUE(CompareFonts(plain_font, desc_plain.ToNSFont()));
85
86  NSFont* bold_font = [NSFont boldSystemFontOfSize:30.0];
87  ASSERT_TRUE(bold_font != nil);
88  FontDescriptor desc_bold(bold_font);
89  EXPECT_TRUE(CompareFonts(bold_font, desc_bold.ToNSFont()));
90
91  NSFont* italic_bold_font =
92      [[NSFontManager sharedFontManager]
93          fontWithFamily:base::SysUTF8ToNSString(kCourierFontName)
94                  traits:(NSBoldFontMask | NSItalicFontMask)
95                  weight:5
96                    size:18.0];
97  ASSERT_TRUE(italic_bold_font != nil);
98  FontDescriptor desc_italic_bold(italic_bold_font);
99  EXPECT_TRUE(CompareFonts(italic_bold_font, desc_italic_bold.ToNSFont()));
100}
101
102// Test that FontDescriptor doesn't crash when used with bad parameters.
103// This is important since FontDescriptors are constructed with parameters
104// sent over IPC and bad values must not trigger unexpected behavior.
105TEST_F(FontSerializationTest, BadParameters) {
106  EXPECT_NSNE(MakeNSFont(kCourierFontName, 12), nil);
107  EXPECT_NSNE(MakeNSFont(kCourierFontName, std::numeric_limits<float>::min()),
108              nil);
109  EXPECT_NSNE(MakeNSFont(kCourierFontName, 0), nil);
110  EXPECT_NSNE(MakeNSFont(kCourierFontName, std::numeric_limits<float>::max()),
111              nil);
112}
113
114}  // namespace
115