1 // Copyright (c) 2012 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/font_list.h"
6
7 #include <algorithm>
8 #include <string>
9 #include <vector>
10
11 #include "base/strings/string_number_conversions.h"
12 #include "base/strings/string_util.h"
13 #include "testing/gtest/include/gtest/gtest.h"
14
15 namespace {
16
17 // Helper function for comparing fonts for equality.
FontToString(const gfx::Font & font)18 std::string FontToString(const gfx::Font& font) {
19 std::string font_string = font.GetFontName();
20 font_string += "|";
21 font_string += base::IntToString(font.GetFontSize());
22 int style = font.GetStyle();
23 if (style & gfx::Font::BOLD)
24 font_string += "|bold";
25 if (style & gfx::Font::ITALIC)
26 font_string += "|italic";
27 return font_string;
28 }
29
30 } // namespace
31
32 namespace gfx {
33
TEST(FontListTest,FontDescString_FromDescString)34 TEST(FontListTest, FontDescString_FromDescString) {
35 // Test init from font name style size string.
36 FontList font_list = FontList("Droid Sans serif, Sans serif, 10px");
37 EXPECT_EQ("Droid Sans serif, Sans serif, 10px",
38 font_list.GetFontDescriptionString());
39 }
40
TEST(FontListTest,FontDescString_FromFontNamesStyleAndSize)41 TEST(FontListTest, FontDescString_FromFontNamesStyleAndSize) {
42 // Test init from font names, style and size.
43 std::vector<std::string> font_names;
44 font_names.push_back("Arial");
45 font_names.push_back("Droid Sans serif");
46 int font_style = Font::BOLD | Font::ITALIC;
47 int font_size = 11;
48 FontList font_list = FontList(font_names, font_style, font_size);
49 EXPECT_EQ("Arial,Droid Sans serif,Bold Italic 11px",
50 font_list.GetFontDescriptionString());
51 }
52
TEST(FontListTest,FontDescString_FromFont)53 TEST(FontListTest, FontDescString_FromFont) {
54 // Test init from Font.
55 Font font("Arial", 8);
56 FontList font_list = FontList(font);
57 EXPECT_EQ("Arial,8px", font_list.GetFontDescriptionString());
58 }
59
TEST(FontListTest,FontDescString_FromFontWithNonNormalStyle)60 TEST(FontListTest, FontDescString_FromFontWithNonNormalStyle) {
61 // Test init from Font with non-normal style.
62 Font font("Arial", 8);
63 FontList font_list = FontList(font.DeriveFont(2, Font::BOLD));
64 EXPECT_EQ("Arial,Bold 10px", font_list.GetFontDescriptionString());
65
66 font_list = FontList(font.DeriveFont(-2, Font::ITALIC));
67 EXPECT_EQ("Arial,Italic 6px", font_list.GetFontDescriptionString());
68 }
69
TEST(FontListTest,FontDescString_FromFontVector)70 TEST(FontListTest, FontDescString_FromFontVector) {
71 // Test init from Font vector.
72 Font font("Arial", 8);
73 Font font_1("Sans serif", 10);
74 std::vector<Font> fonts;
75 fonts.push_back(font.DeriveFont(0, Font::BOLD));
76 fonts.push_back(font_1.DeriveFont(-2, Font::BOLD));
77 FontList font_list = FontList(fonts);
78 EXPECT_EQ("Arial,Sans serif,Bold 8px", font_list.GetFontDescriptionString());
79 }
80
TEST(FontListTest,Fonts_FromDescString)81 TEST(FontListTest, Fonts_FromDescString) {
82 // Test init from font name size string.
83 FontList font_list = FontList("serif,Sans serif, 13px");
84 const std::vector<Font>& fonts = font_list.GetFonts();
85 EXPECT_EQ(2U, fonts.size());
86 EXPECT_EQ("serif|13", FontToString(fonts[0]));
87 EXPECT_EQ("Sans serif|13", FontToString(fonts[1]));
88 }
89
TEST(FontListTest,Fonts_FromDescStringInFlexibleFormat)90 TEST(FontListTest, Fonts_FromDescStringInFlexibleFormat) {
91 // Test init from font name size string with flexible format.
92 FontList font_list = FontList(" serif , Sans serif , 13px");
93 const std::vector<Font>& fonts = font_list.GetFonts();
94 EXPECT_EQ(2U, fonts.size());
95 EXPECT_EQ("serif|13", FontToString(fonts[0]));
96 EXPECT_EQ("Sans serif|13", FontToString(fonts[1]));
97 }
98
TEST(FontListTest,Fonts_FromDescStringWithStyleInFlexibleFormat)99 TEST(FontListTest, Fonts_FromDescStringWithStyleInFlexibleFormat) {
100 // Test init from font name style size string with flexible format.
101 FontList font_list = FontList(" serif , Sans serif , Bold "
102 " Italic 13px");
103 const std::vector<Font>& fonts = font_list.GetFonts();
104 EXPECT_EQ(2U, fonts.size());
105 EXPECT_EQ("serif|13|bold|italic", FontToString(fonts[0]));
106 EXPECT_EQ("Sans serif|13|bold|italic", FontToString(fonts[1]));
107 }
108
TEST(FontListTest,Fonts_FromFont)109 TEST(FontListTest, Fonts_FromFont) {
110 // Test init from Font.
111 Font font("Arial", 8);
112 FontList font_list = FontList(font);
113 const std::vector<Font>& fonts = font_list.GetFonts();
114 EXPECT_EQ(1U, fonts.size());
115 EXPECT_EQ("Arial|8", FontToString(fonts[0]));
116 }
117
TEST(FontListTest,Fonts_FromFontWithNonNormalStyle)118 TEST(FontListTest, Fonts_FromFontWithNonNormalStyle) {
119 // Test init from Font with non-normal style.
120 Font font("Arial", 8);
121 FontList font_list = FontList(font.DeriveFont(2, Font::BOLD));
122 std::vector<Font> fonts = font_list.GetFonts();
123 EXPECT_EQ(1U, fonts.size());
124 EXPECT_EQ("Arial|10|bold", FontToString(fonts[0]));
125
126 font_list = FontList(font.DeriveFont(-2, Font::ITALIC));
127 fonts = font_list.GetFonts();
128 EXPECT_EQ(1U, fonts.size());
129 EXPECT_EQ("Arial|6|italic", FontToString(fonts[0]));
130 }
131
TEST(FontListTest,Fonts_FromFontVector)132 TEST(FontListTest, Fonts_FromFontVector) {
133 // Test init from Font vector.
134 Font font("Arial", 8);
135 Font font_1("Sans serif", 10);
136 std::vector<Font> input_fonts;
137 input_fonts.push_back(font.DeriveFont(0, Font::BOLD));
138 input_fonts.push_back(font_1.DeriveFont(-2, Font::BOLD));
139 FontList font_list = FontList(input_fonts);
140 const std::vector<Font>& fonts = font_list.GetFonts();
141 EXPECT_EQ(2U, fonts.size());
142 EXPECT_EQ("Arial|8|bold", FontToString(fonts[0]));
143 EXPECT_EQ("Sans serif|8|bold", FontToString(fonts[1]));
144 }
145
TEST(FontListTest,Fonts_DescStringWithStyleInFlexibleFormat_RoundTrip)146 TEST(FontListTest, Fonts_DescStringWithStyleInFlexibleFormat_RoundTrip) {
147 // Test round trip from font description string to font vector to
148 // font description string.
149 FontList font_list = FontList(" serif , Sans serif , Bold "
150 " Italic 13px");
151
152 const std::vector<Font>& fonts = font_list.GetFonts();
153 FontList font_list_1 = FontList(fonts);
154 const std::string& desc_str = font_list_1.GetFontDescriptionString();
155
156 EXPECT_EQ("serif,Sans serif,Bold Italic 13px", desc_str);
157 }
158
TEST(FontListTest,Fonts_FontVector_RoundTrip)159 TEST(FontListTest, Fonts_FontVector_RoundTrip) {
160 // Test round trip from font vector to font description string to font vector.
161 Font font("Arial", 8);
162 Font font_1("Sans serif", 10);
163 std::vector<Font> input_fonts;
164 input_fonts.push_back(font.DeriveFont(0, Font::BOLD));
165 input_fonts.push_back(font_1.DeriveFont(-2, Font::BOLD));
166 FontList font_list = FontList(input_fonts);
167
168 const std::string& desc_string = font_list.GetFontDescriptionString();
169 FontList font_list_1 = FontList(desc_string);
170 const std::vector<Font>& round_trip_fonts = font_list_1.GetFonts();
171
172 EXPECT_EQ(2U, round_trip_fonts.size());
173 EXPECT_EQ("Arial|8|bold", FontToString(round_trip_fonts[0]));
174 EXPECT_EQ("Sans serif|8|bold", FontToString(round_trip_fonts[1]));
175 }
176
TEST(FontListTest,FontDescString_GetStyle)177 TEST(FontListTest, FontDescString_GetStyle) {
178 FontList font_list = FontList("Arial,Sans serif, 8px");
179 EXPECT_EQ(Font::NORMAL, font_list.GetFontStyle());
180
181 font_list = FontList("Arial,Sans serif,Bold 8px");
182 EXPECT_EQ(Font::BOLD, font_list.GetFontStyle());
183
184 font_list = FontList("Arial,Sans serif,Italic 8px");
185 EXPECT_EQ(Font::ITALIC, font_list.GetFontStyle());
186
187 font_list = FontList("Arial,Italic Bold 8px");
188 EXPECT_EQ(Font::BOLD | Font::ITALIC, font_list.GetFontStyle());
189 }
190
TEST(FontListTest,Fonts_GetStyle)191 TEST(FontListTest, Fonts_GetStyle) {
192 std::vector<Font> fonts;
193 fonts.push_back(gfx::Font("Arial", 8));
194 fonts.push_back(gfx::Font("Sans serif", 8));
195 FontList font_list = FontList(fonts);
196 EXPECT_EQ(Font::NORMAL, font_list.GetFontStyle());
197 fonts[0] = fonts[0].DeriveFont(0, Font::ITALIC | Font::BOLD);
198 fonts[1] = fonts[1].DeriveFont(0, Font::ITALIC | Font::BOLD);
199 font_list = FontList(fonts);
200 EXPECT_EQ(Font::ITALIC | Font::BOLD, font_list.GetFontStyle());
201 }
202
TEST(FontListTest,FontDescString_DeriveFontList)203 TEST(FontListTest, FontDescString_DeriveFontList) {
204 FontList font_list = FontList("Arial,Sans serif, 8px");
205
206 FontList derived = font_list.DeriveFontList(Font::BOLD | Font::ITALIC);
207 EXPECT_EQ("Arial,Sans serif,Bold Italic 8px",
208 derived.GetFontDescriptionString());
209 }
210
TEST(FontListTest,Fonts_DeriveFontList)211 TEST(FontListTest, Fonts_DeriveFontList) {
212 std::vector<Font> fonts;
213 fonts.push_back(gfx::Font("Arial", 8));
214 fonts.push_back(gfx::Font("Sans serif", 8));
215 FontList font_list = FontList(fonts);
216
217 FontList derived = font_list.DeriveFontList(Font::BOLD | Font::ITALIC);
218 const std::vector<Font>& derived_fonts = derived.GetFonts();
219
220 EXPECT_EQ(2U, derived_fonts.size());
221 EXPECT_EQ("Arial|8|bold|italic", FontToString(derived_fonts[0]));
222 EXPECT_EQ("Sans serif|8|bold|italic", FontToString(derived_fonts[1]));
223 }
224
TEST(FontListTest,FontDescString_DeriveFontListWithSize)225 TEST(FontListTest, FontDescString_DeriveFontListWithSize) {
226 FontList font_list = FontList("Arial,Sans serif,Bold Italic 8px");
227
228 FontList derived = font_list.DeriveFontListWithSize(10);
229 EXPECT_EQ("Arial,Sans serif,Bold Italic 10px",
230 derived.GetFontDescriptionString());
231 }
232
TEST(FontListTest,Fonts_DeriveFontListWithSize)233 TEST(FontListTest, Fonts_DeriveFontListWithSize) {
234 std::vector<Font> fonts;
235 fonts.push_back(gfx::Font("Arial", 8));
236 fonts.push_back(gfx::Font("Sans serif", 8));
237 FontList font_list = FontList(fonts);
238
239 FontList derived = font_list.DeriveFontListWithSize(5);
240 const std::vector<Font>& derived_fonts = derived.GetFonts();
241
242 EXPECT_EQ(2U, derived_fonts.size());
243 EXPECT_EQ("Arial|5", FontToString(derived_fonts[0]));
244 EXPECT_EQ("Sans serif|5", FontToString(derived_fonts[1]));
245 }
246
TEST(FontListTest,FontDescString_DeriveFontListWithSizeDelta)247 TEST(FontListTest, FontDescString_DeriveFontListWithSizeDelta) {
248 FontList font_list = FontList("Arial,Sans serif,Bold 18px");
249
250 FontList derived = font_list.DeriveFontListWithSizeDelta(-8);
251 EXPECT_EQ("Arial,Sans serif,Bold 10px",
252 derived.GetFontDescriptionString());
253 }
254
TEST(FontListTest,Fonts_DeriveFontListWithSizeDelta)255 TEST(FontListTest, Fonts_DeriveFontListWithSizeDelta) {
256 std::vector<Font> fonts;
257 fonts.push_back(gfx::Font("Arial", 18).DeriveFont(0, Font::ITALIC));
258 fonts.push_back(gfx::Font("Sans serif", 18).DeriveFont(0, Font::ITALIC));
259 FontList font_list = FontList(fonts);
260
261 FontList derived = font_list.DeriveFontListWithSizeDelta(-5);
262 const std::vector<Font>& derived_fonts = derived.GetFonts();
263
264 EXPECT_EQ(2U, derived_fonts.size());
265 EXPECT_EQ("Arial|13|italic", FontToString(derived_fonts[0]));
266 EXPECT_EQ("Sans serif|13|italic", FontToString(derived_fonts[1]));
267 }
268
TEST(FontListTest,FontDescString_DeriveFontListWithSizeDeltaAndStyle)269 TEST(FontListTest, FontDescString_DeriveFontListWithSizeDeltaAndStyle) {
270 FontList font_list = FontList("Arial,Sans serif,Bold Italic 8px");
271
272 FontList derived =
273 font_list.DeriveFontListWithSizeDeltaAndStyle(10, Font::ITALIC);
274 EXPECT_EQ("Arial,Sans serif,Italic 18px",
275 derived.GetFontDescriptionString());
276 }
277
TEST(FontListTest,Fonts_DeriveFontListWithSizeDeltaAndStyle)278 TEST(FontListTest, Fonts_DeriveFontListWithSizeDeltaAndStyle) {
279 std::vector<Font> fonts;
280 fonts.push_back(gfx::Font("Arial", 8));
281 fonts.push_back(gfx::Font("Sans serif", 8));
282 FontList font_list = FontList(fonts);
283
284 FontList derived =
285 font_list.DeriveFontListWithSizeDeltaAndStyle(5, Font::BOLD);
286 const std::vector<Font>& derived_fonts = derived.GetFonts();
287
288 EXPECT_EQ(2U, derived_fonts.size());
289 EXPECT_EQ("Arial|13|bold", FontToString(derived_fonts[0]));
290 EXPECT_EQ("Sans serif|13|bold", FontToString(derived_fonts[1]));
291 }
292
TEST(FontListTest,Fonts_GetHeight_GetBaseline)293 TEST(FontListTest, Fonts_GetHeight_GetBaseline) {
294 // If a font list has only one font, the height and baseline must be the same.
295 Font font1("Arial", 16);
296 ASSERT_EQ("arial", StringToLowerASCII(font1.GetActualFontNameForTesting()));
297 FontList font_list1("Arial, 16px");
298 EXPECT_EQ(font1.GetHeight(), font_list1.GetHeight());
299 EXPECT_EQ(font1.GetBaseline(), font_list1.GetBaseline());
300
301 // If there are two different fonts, the font list returns the max value
302 // for ascent and descent.
303 Font font2("Symbol", 16);
304 ASSERT_EQ("symbol", StringToLowerASCII(font2.GetActualFontNameForTesting()));
305 EXPECT_NE(font1.GetBaseline(), font2.GetBaseline());
306 EXPECT_NE(font1.GetHeight() - font1.GetBaseline(),
307 font2.GetHeight() - font2.GetBaseline());
308 std::vector<Font> fonts;
309 fonts.push_back(font1);
310 fonts.push_back(font2);
311 FontList font_list_mix(fonts);
312 // ascent of FontList == max(ascent of Fonts)
313 EXPECT_EQ(std::max(font1.GetHeight() - font1.GetBaseline(),
314 font2.GetHeight() - font2.GetBaseline()),
315 font_list_mix.GetHeight() - font_list_mix.GetBaseline());
316 // descent of FontList == max(descent of Fonts)
317 EXPECT_EQ(std::max(font1.GetBaseline(), font2.GetBaseline()),
318 font_list_mix.GetBaseline());
319 }
320
321 } // namespace gfx
322