1 /*
2 * Copyright 2014 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "Test.h"
9
10 #include "Resources.h"
11 #include "SkCanvas.h"
12 #include "SkCommandLineFlags.h"
13 #include "SkFixed.h"
14 #include "SkFont.h"
15 #include "SkFontMgr_android.h"
16 #include "SkFontMgr_android_parser.h"
17 #include "SkOSFile.h"
18 #include "SkTypeface.h"
19
20 #include <cmath>
21 #include <cstdio>
22
23 DECLARE_bool(verboseFontMgr);
24
CountFallbacks(SkTDArray<FontFamily * > fontFamilies)25 int CountFallbacks(SkTDArray<FontFamily*> fontFamilies) {
26 int countOfFallbackFonts = 0;
27 for (int i = 0; i < fontFamilies.count(); i++) {
28 if (fontFamilies[i]->fIsFallbackFont) {
29 countOfFallbackFonts++;
30 }
31 }
32 return countOfFallbackFonts;
33 }
34
35 //https://tools.ietf.org/html/rfc5234#appendix-B.1
isALPHA(int c)36 static bool isALPHA(int c) {
37 return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
38 }
39
40 //https://tools.ietf.org/html/rfc5234#appendix-B.1
isDIGIT(int c)41 static bool isDIGIT(int c) {
42 return ('0' <= c && c <= '9');
43 }
44
ValidateLoadedFonts(SkTDArray<FontFamily * > fontFamilies,const char * firstExpectedFile,skiatest::Reporter * reporter)45 static void ValidateLoadedFonts(SkTDArray<FontFamily*> fontFamilies, const char* firstExpectedFile,
46 skiatest::Reporter* reporter) {
47 REPORTER_ASSERT(reporter, fontFamilies[0]->fNames.count() == 5);
48 REPORTER_ASSERT(reporter, !strcmp(fontFamilies[0]->fNames[0].c_str(), "sans-serif"));
49 REPORTER_ASSERT(reporter,
50 !strcmp(fontFamilies[0]->fFonts[0].fFileName.c_str(), firstExpectedFile));
51 REPORTER_ASSERT(reporter, !fontFamilies[0]->fIsFallbackFont);
52
53 // Check that the languages are all sane.
54 for (const auto& fontFamily : fontFamilies) {
55 for (const auto& lang : fontFamily->fLanguages) {
56 const SkString& langString = lang.getTag();
57 for (size_t i = 0; i < langString.size(); ++i) {
58 int c = langString[i];
59 REPORTER_ASSERT(reporter, isALPHA(c) || isDIGIT(c) || '-' == c);
60 }
61 }
62 }
63
64 // All file names in the test configuration files start with a capital letter.
65 // This is not a general requirement, but it is true of all the test configuration data.
66 // Verifying ensures the filenames have been read sanely and have not been 'sliced'.
67 for (int i = 0; i < fontFamilies.count(); ++i) {
68 FontFamily& family = *fontFamilies[i];
69 for (int j = 0; j < family.fFonts.count(); ++j) {
70 FontFileInfo& file = family.fFonts[j];
71 REPORTER_ASSERT(reporter, !file.fFileName.isEmpty() &&
72 file.fFileName[0] >= 'A' &&
73 file.fFileName[0] <= 'Z');
74 }
75 }
76 }
77
DumpFiles(const FontFamily & fontFamily)78 static void DumpFiles(const FontFamily& fontFamily) {
79 for (int j = 0; j < fontFamily.fFonts.count(); ++j) {
80 const FontFileInfo& ffi = fontFamily.fFonts[j];
81 SkDebugf(" file (%d) %s#%d", ffi.fWeight, ffi.fFileName.c_str(), ffi.fIndex);
82 for (const auto& coordinate : ffi.fVariationDesignPosition) {
83 SkDebugf(" @'%c%c%c%c'=%f",
84 (coordinate.axis >> 24) & 0xFF,
85 (coordinate.axis >> 16) & 0xFF,
86 (coordinate.axis >> 8) & 0xFF,
87 (coordinate.axis ) & 0xFF,
88 coordinate.value);
89 }
90 SkDebugf("\n");
91 }
92 }
93
DumpLoadedFonts(SkTDArray<FontFamily * > fontFamilies,const char * label)94 static void DumpLoadedFonts(SkTDArray<FontFamily*> fontFamilies, const char* label) {
95 if (!FLAGS_verboseFontMgr) {
96 return;
97 }
98
99 SkDebugf("\n--- Dumping %s\n", label);
100 for (int i = 0; i < fontFamilies.count(); ++i) {
101 SkDebugf("Family %d:\n", i);
102 switch(fontFamilies[i]->fVariant) {
103 case kElegant_FontVariant: SkDebugf(" elegant\n"); break;
104 case kCompact_FontVariant: SkDebugf(" compact\n"); break;
105 default: break;
106 }
107 SkDebugf(" basePath %s\n", fontFamilies[i]->fBasePath.c_str());
108 if (!fontFamilies[i]->fLanguages.empty()) {
109 SkDebugf(" language");
110 for (const auto& lang : fontFamilies[i]->fLanguages) {
111 SkDebugf(" %s", lang.getTag().c_str());
112 }
113 SkDebugf("\n");
114 }
115 for (int j = 0; j < fontFamilies[i]->fNames.count(); ++j) {
116 SkDebugf(" name %s\n", fontFamilies[i]->fNames[j].c_str());
117 }
118 DumpFiles(*fontFamilies[i]);
119 fontFamilies[i]->fallbackFamilies.foreach(
120 [](SkString, std::unique_ptr<FontFamily>* fallbackFamily) {
121 SkDebugf(" Fallback for: %s\n", (*fallbackFamily)->fFallbackFor.c_str());
122 DumpFiles(*(*fallbackFamily).get());
123 }
124 );
125 }
126 SkDebugf("\n\n");
127 }
128
test_parse_fixed_r(skiatest::Reporter * reporter,double low,double high,double inc)129 template <int N, typename T> static double test_parse_fixed_r(skiatest::Reporter* reporter,
130 double low, double high, double inc)
131 {
132 double SK_FixedMax_double = nextafter(1 << (sizeof(T) * CHAR_BIT - N - 1), 0.0);
133 double SK_FixedEpsilon_double = (1.0 / (1 << N));
134 double maxError = 0;
135 char buffer[64];
136 for (double f = low; f < high; f += inc) {
137 SkString s;
138 // 'sprintf' formatting as expected depends on the current locale being "C".
139 // We currently expect tests and tools to run in the "C" locale.
140 sprintf(buffer, "%.20f", f);
141 T fix;
142 bool b = parse_fixed<N>(buffer, &fix);
143 if (b) {
144 double f2 = fix * SK_FixedEpsilon_double;
145 double error = fabs(f - f2);
146 REPORTER_ASSERT(reporter, error <= SK_FixedEpsilon_double);
147 maxError = SkTMax(maxError, error);
148 } else {
149 REPORTER_ASSERT(reporter, f < -SK_FixedMax_double || SK_FixedMax_double < f);
150 }
151 }
152
153 //SkDebugf("maxError: %.20f\n", maxError);
154 return maxError;
155 }
156
test_parse_fixed(skiatest::Reporter * reporter)157 static void test_parse_fixed(skiatest::Reporter* reporter) {
158 test_parse_fixed_r<27, int32_t>(reporter, -8.1, -7.9, 0.000001);
159 test_parse_fixed_r<27, int32_t>(reporter, -0.1, 0.1, 0.000001);
160 test_parse_fixed_r<27, int32_t>(reporter, 7.9, 8.1, 0.000001);
161 test_parse_fixed_r<16, int32_t>(reporter, -0.125, 0.125, 1.0 / (1 << 19));
162 test_parse_fixed_r<16, int32_t>(reporter, -32768.125, -32766.875, 1.0 / (1 << 17));
163 test_parse_fixed_r<16, int32_t>(reporter, 32766.875, 32768.125, 1.0 / (1 << 17));
164 test_parse_fixed_r<16, int32_t>(reporter, -1.1, 1.1, 0.0001);
165
166 SkFixed fix;
167 REPORTER_ASSERT(reporter, !parse_fixed<27>("-17.1", &fix));
168 REPORTER_ASSERT(reporter, !parse_fixed<16>("32768", &fix));
169 REPORTER_ASSERT(reporter, !parse_fixed<16>("", &fix));
170 REPORTER_ASSERT(reporter, !parse_fixed<16>(".", &fix));
171 REPORTER_ASSERT(reporter, !parse_fixed<16>("123.", &fix));
172 REPORTER_ASSERT(reporter, !parse_fixed<16>("a", &fix));
173 REPORTER_ASSERT(reporter, !parse_fixed<16>(".123a", &fix));
174 }
175
DEF_TEST(FontMgrAndroidParser,reporter)176 DEF_TEST(FontMgrAndroidParser, reporter) {
177 test_parse_fixed(reporter);
178
179 bool resourcesMissing = false;
180
181 SkTDArray<FontFamily*> preV17FontFamilies;
182 SkFontMgr_Android_Parser::GetCustomFontFamilies(preV17FontFamilies,
183 SkString("/custom/font/path/"),
184 GetResourcePath("android_fonts/pre_v17/system_fonts.xml").c_str(),
185 GetResourcePath("android_fonts/pre_v17/fallback_fonts.xml").c_str());
186
187 if (preV17FontFamilies.count() > 0) {
188 REPORTER_ASSERT(reporter, preV17FontFamilies.count() == 14);
189 REPORTER_ASSERT(reporter, CountFallbacks(preV17FontFamilies) == 10);
190
191 DumpLoadedFonts(preV17FontFamilies, "pre version 17");
192 ValidateLoadedFonts(preV17FontFamilies, "Roboto-Regular.ttf", reporter);
193 } else {
194 resourcesMissing = true;
195 }
196 preV17FontFamilies.deleteAll();
197
198
199 SkTDArray<FontFamily*> v17FontFamilies;
200 SkFontMgr_Android_Parser::GetCustomFontFamilies(v17FontFamilies,
201 SkString("/custom/font/path/"),
202 GetResourcePath("android_fonts/v17/system_fonts.xml").c_str(),
203 GetResourcePath("android_fonts/v17/fallback_fonts.xml").c_str(),
204 GetResourcePath("android_fonts/v17").c_str());
205
206 if (v17FontFamilies.count() > 0) {
207 REPORTER_ASSERT(reporter, v17FontFamilies.count() == 56);
208 REPORTER_ASSERT(reporter, CountFallbacks(v17FontFamilies) == 46);
209
210 DumpLoadedFonts(v17FontFamilies, "version 17");
211 ValidateLoadedFonts(v17FontFamilies, "Roboto-Regular.ttf", reporter);
212 } else {
213 resourcesMissing = true;
214 }
215 v17FontFamilies.deleteAll();
216
217
218 SkTDArray<FontFamily*> v22FontFamilies;
219 SkFontMgr_Android_Parser::GetCustomFontFamilies(v22FontFamilies,
220 SkString("/custom/font/path/"),
221 GetResourcePath("android_fonts/v22/fonts.xml").c_str(),
222 nullptr);
223
224 if (v22FontFamilies.count() > 0) {
225 REPORTER_ASSERT(reporter, v22FontFamilies.count() == 54);
226 REPORTER_ASSERT(reporter, CountFallbacks(v22FontFamilies) == 42);
227
228 DumpLoadedFonts(v22FontFamilies, "version 22");
229 ValidateLoadedFonts(v22FontFamilies, "Roboto-Thin.ttf", reporter);
230 } else {
231 resourcesMissing = true;
232 }
233 v22FontFamilies.deleteAll();
234
235 if (resourcesMissing) {
236 SkDebugf("---- Resource files missing for FontConfigParser test\n");
237 }
238 }
239
DEF_TEST(FontMgrAndroidLegacyMakeTypeface,reporter)240 DEF_TEST(FontMgrAndroidLegacyMakeTypeface, reporter) {
241 constexpr char fontsXmlFilename[] = "fonts/fonts.xml";
242 SkString basePath = GetResourcePath("fonts/");
243 SkString fontsXml = GetResourcePath(fontsXmlFilename);
244
245 if (!sk_exists(fontsXml.c_str())) {
246 ERRORF(reporter, "file missing: %s\n", fontsXmlFilename);
247 return;
248 }
249
250 SkFontMgr_Android_CustomFonts custom;
251 custom.fSystemFontUse = SkFontMgr_Android_CustomFonts::kOnlyCustom;
252 custom.fBasePath = basePath.c_str();
253 custom.fFontsXml = fontsXml.c_str();
254 custom.fFallbackFontsXml = nullptr;
255 custom.fIsolated = false;
256
257 sk_sp<SkFontMgr> fm(SkFontMgr_New_Android(&custom));
258 sk_sp<SkTypeface> t(fm->legacyMakeTypeface("non-existent-font", SkFontStyle()));
259 REPORTER_ASSERT(reporter, nullptr == t);
260 }
261
bitmap_compare(const SkBitmap & ref,const SkBitmap & test)262 static bool bitmap_compare(const SkBitmap& ref, const SkBitmap& test) {
263 for (int y = 0; y < test.height(); ++y) {
264 for (int x = 0; x < test.width(); ++x) {
265 SkColor testColor = test.getColor(x, y);
266 SkColor refColor = ref.getColor(x, y);
267 if (refColor != testColor) {
268 return false;
269 }
270 }
271 }
272 return true;
273 }
274
DEF_TEST(FontMgrAndroidSystemVariableTypeface,reporter)275 DEF_TEST(FontMgrAndroidSystemVariableTypeface, reporter) {
276 constexpr char fontsXmlFilename[] = "fonts/fonts.xml";
277 SkString basePath = GetResourcePath("fonts/");
278 SkString fontsXml = GetResourcePath(fontsXmlFilename);
279
280 if (!sk_exists(fontsXml.c_str())) {
281 ERRORF(reporter, "file missing: %s\n", fontsXmlFilename);
282 return;
283 }
284
285 SkFontMgr_Android_CustomFonts custom;
286 custom.fSystemFontUse = SkFontMgr_Android_CustomFonts::kOnlyCustom;
287 custom.fBasePath = basePath.c_str();
288 custom.fFontsXml = fontsXml.c_str();
289 custom.fFallbackFontsXml = nullptr;
290 custom.fIsolated = false;
291
292 sk_sp<SkFontMgr> fontMgr(SkFontMgr_New_Android(&custom));
293 // "sans-serif" in "fonts/fonts.xml" is "fonts/Distortable.ttf"
294 sk_sp<SkTypeface> typeface(fontMgr->legacyMakeTypeface("sans-serif", SkFontStyle()));
295
296 SkBitmap bitmapStream;
297 bitmapStream.allocN32Pixels(64, 64);
298 SkCanvas canvasStream(bitmapStream);
299 canvasStream.drawColor(SK_ColorWHITE);
300
301 SkBitmap bitmapClone;
302 bitmapClone.allocN32Pixels(64, 64);
303 SkCanvas canvasClone(bitmapClone);
304 canvasStream.drawColor(SK_ColorWHITE);
305
306 SkPaint paint;
307 paint.setColor(SK_ColorGRAY);
308 paint.setAntiAlias(true);
309 constexpr float kTextSize = 20;
310
311 std::unique_ptr<SkStreamAsset> distortableStream(
312 GetResourceAsStream("fonts/Distortable.ttf"));
313 if (!distortableStream) {
314 return;
315 }
316
317 SkPoint point = SkPoint::Make(20.0f, 20.0f);
318 SkFourByteTag tag = SkSetFourByteTag('w', 'g', 'h', 't');
319
320 for (int i = 0; i < 10; ++i) {
321 SkScalar styleValue =
322 SkDoubleToScalar(0.5 + i * ((2.0 - 0.5) / 10));
323 SkFontArguments::VariationPosition::Coordinate
324 coordinates[] = {{tag, styleValue}};
325 SkFontArguments::VariationPosition
326 position = {coordinates, SK_ARRAY_COUNT(coordinates)};
327
328 SkFont fontStream(
329 fontMgr->makeFromStream(distortableStream->duplicate(),
330 SkFontArguments().setVariationDesignPosition(position)),
331 kTextSize);
332 fontStream.setEdging(SkFont::Edging::kSubpixelAntiAlias);
333
334
335 SkFont fontClone(
336 typeface->makeClone(SkFontArguments().setVariationDesignPosition(position)), kTextSize);
337 fontClone.setEdging(SkFont::Edging::kSubpixelAntiAlias);
338
339 constexpr char text[] = "abc";
340
341 canvasStream.drawColor(SK_ColorWHITE);
342 canvasStream.drawString(text, point.fX, point.fY, fontStream, paint);
343
344 canvasClone.drawColor(SK_ColorWHITE);
345 canvasClone.drawString(text, point.fX, point.fY, fontClone, paint);
346
347 bool success = bitmap_compare(bitmapStream, bitmapClone);
348 REPORTER_ASSERT(reporter, success);
349 }
350 }
351
DEF_TEST(FontMgrAndroidSystemFallbackFor,reporter)352 DEF_TEST(FontMgrAndroidSystemFallbackFor, reporter) {
353 constexpr char fontsXmlFilename[] = "fonts/fonts.xml";
354 SkString basePath = GetResourcePath("fonts/");
355 SkString fontsXml = GetResourcePath(fontsXmlFilename);
356
357 if (!sk_exists(fontsXml.c_str())) {
358 ERRORF(reporter, "file missing: %s\n", fontsXmlFilename);
359 return;
360 }
361
362 SkFontMgr_Android_CustomFonts custom;
363 custom.fSystemFontUse = SkFontMgr_Android_CustomFonts::kOnlyCustom;
364 custom.fBasePath = basePath.c_str();
365 custom.fFontsXml = fontsXml.c_str();
366 custom.fFallbackFontsXml = nullptr;
367 custom.fIsolated = false;
368
369 sk_sp<SkFontMgr> fontMgr(SkFontMgr_New_Android(&custom));
370 // "sans-serif" in "fonts/fonts.xml" is "fonts/Distortable.ttf", which doesn't have a '!'
371 // but "TestTTC" has a bold font which does have '!' and is marked as fallback for "sans-serif"
372 // and should take precedence over the same font marked as normal weight next to it.
373 sk_sp<SkTypeface> typeface(fontMgr->matchFamilyStyleCharacter(
374 "sans-serif", SkFontStyle(), nullptr, 0, '!'));
375
376 REPORTER_ASSERT(reporter, typeface->fontStyle() == SkFontStyle::Bold());
377 }
378