1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkData.h"
#include "SkFixed.h"
#include "SkFontMgr.h"
#include "SkMakeUnique.h"
#include "SkOTTable_OS_2.h"
#include "SkSFNTHeader.h"
#include "SkStream.h"
#include "SkRefCnt.h"
#include "SkTypeface.h"
#include "SkTypefaceCache.h"
#include "Resources.h"
#include "Test.h"
#include <memory>
static void TypefaceStyle_test(skiatest::Reporter* reporter,
uint16_t weight, uint16_t width, SkData* data)
{
sk_sp<SkData> dataCopy;
if (!data->unique()) {
dataCopy = SkData::MakeWithCopy(data->data(), data->size());
data = dataCopy.get();
}
SkSFNTHeader* sfntHeader = static_cast<SkSFNTHeader*>(data->writable_data());
SkSFNTHeader::TableDirectoryEntry* tableEntry =
SkTAfter<SkSFNTHeader::TableDirectoryEntry>(sfntHeader);
SkSFNTHeader::TableDirectoryEntry* os2TableEntry = nullptr;
int numTables = SkEndian_SwapBE16(sfntHeader->numTables);
for (int tableEntryIndex = 0; tableEntryIndex < numTables; ++tableEntryIndex) {
if (SkOTTableOS2::TAG == tableEntry[tableEntryIndex].tag) {
os2TableEntry = tableEntry + tableEntryIndex;
break;
}
}
SkASSERT_RELEASE(os2TableEntry);
size_t os2TableOffset = SkEndian_SwapBE32(os2TableEntry->offset);
SkOTTableOS2_V0* os2Table = SkTAddOffset<SkOTTableOS2_V0>(sfntHeader, os2TableOffset);
os2Table->usWeightClass.value = SkEndian_SwapBE16(weight);
using WidthType = SkOTTableOS2_V0::WidthClass::Value;
os2Table->usWidthClass.value = static_cast<WidthType>(SkEndian_SwapBE16(width));
sk_sp<SkTypeface> newTypeface(SkTypeface::MakeFromStream(new SkMemoryStream(sk_ref_sp(data))));
SkASSERT_RELEASE(newTypeface);
SkFontStyle newStyle = newTypeface->fontStyle();
//printf("%d, %f\n", weight, (newStyle.weight() - (float)0x7FFF) / (float)0x7FFF);
//printf("%d, %f\n", width , (newStyle.width() - (float)0x7F) / (float)0x7F);
//printf("%d, %d\n", weight, newStyle.weight());
//printf("%d, %d\n", width , newStyle.width());
// Some back-ends (CG, GDI, DW) support OS/2 version A which uses 0 - 10 (but all differently).
REPORTER_ASSERT(reporter,
newStyle.weight() == weight ||
(weight <= 10 && newStyle.weight() == 100 * weight) ||
(weight == 4 && newStyle.weight() == 350) || // GDI weirdness
(weight == 5 && newStyle.weight() == 400) || // GDI weirdness
(weight == 0 && newStyle.weight() == 1) || // DW weirdness
(weight == 1000 && newStyle.weight() == 999) // DW weirdness
);
// Some back-ends (GDI) don't support width, ensure these always report 'medium'.
REPORTER_ASSERT(reporter,
newStyle.width() == width ||
newStyle.width() == 5);
}
DEF_TEST(TypefaceStyle, reporter) {
std::unique_ptr<SkStreamAsset> stream(GetResourceAsStream("/fonts/Em.ttf"));
if (!stream) {
REPORT_FAILURE(reporter, "/fonts/Em.ttf", SkString("Cannot load resource"));
return;
}
sk_sp<SkData> data(SkData::MakeFromStream(stream.get(), stream->getLength()));
using SkFS = SkFontStyle;
for (int weight = SkFS::kInvisible_Weight; weight <= SkFS::kExtraBlack_Weight; ++weight) {
TypefaceStyle_test(reporter, weight, 5, data.get());
}
for (int width = SkFS::kUltraCondensed_Width; width <= SkFS::kUltraExpanded_Width; ++width) {
TypefaceStyle_test(reporter, 400, width, data.get());
}
}
DEF_TEST(TypefaceAxes, reporter) {
std::unique_ptr<SkStreamAsset> distortable(GetResourceAsStream("/fonts/Distortable.ttf"));
if (!distortable) {
REPORT_FAILURE(reporter, "distortable", SkString());
return;
}
sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault();
const SkFontArguments::VariationPosition::Coordinate position[] = {
{ SkSetFourByteTag('w','g','h','t'), SK_ScalarSqrt2 }
};
SkFontArguments params;
params.setVariationDesignPosition({position, SK_ARRAY_COUNT(position)});
// TODO: if axes are set and the back-end doesn't support them, should we create the typeface?
sk_sp<SkTypeface> typeface(fm->createFromStream(distortable.release(), params));
int count = typeface->getVariationDesignPosition(nullptr, 0);
if (count == -1) {
return;
}
REPORTER_ASSERT(reporter, count == SK_ARRAY_COUNT(position));
SkFontArguments::VariationPosition::Coordinate positionRead[SK_ARRAY_COUNT(position)];
count = typeface->getVariationDesignPosition(positionRead, SK_ARRAY_COUNT(positionRead));
REPORTER_ASSERT(reporter, count == SK_ARRAY_COUNT(position));
REPORTER_ASSERT(reporter, positionRead[0].axis == position[0].axis);
// Convert to fixed for "almost equal".
SkFixed fixedRead = SkScalarToFixed(positionRead[0].value);
SkFixed fixedOriginal = SkScalarToFixed(position[0].value);
REPORTER_ASSERT(reporter, fixedRead == fixedOriginal);
}
DEF_TEST(TypefaceVariationIndex, reporter) {
std::unique_ptr<SkStreamAsset> distortable(GetResourceAsStream("/fonts/Distortable.ttf"));
if (!distortable) {
REPORT_FAILURE(reporter, "distortable", SkString());
return;
}
sk_sp<SkFontMgr> fm = SkFontMgr::RefDefault();
SkFontArguments params;
// The first named variation position in Distortable is 'Thin'.
params.setCollectionIndex(0x00010000);
sk_sp<SkTypeface> typeface(fm->createFromStream(distortable.release(), params));
if (!typeface) {
// FreeType is the only weird thing that supports this, Skia just needs to make sure if it
// gets one of these things make sense.
return;
}
int count = typeface->getVariationDesignPosition(nullptr, 0);
if (!(count == 1)) {
REPORT_FAILURE(reporter, "count == 1", SkString());
return;
}
SkFontArguments::VariationPosition::Coordinate positionRead[1];
count = typeface->getVariationDesignPosition(positionRead, SK_ARRAY_COUNT(positionRead));
if (count == -1) {
return;
}
if (!(count == 1)) {
REPORT_FAILURE(reporter, "count == 1", SkString());
return;
}
REPORTER_ASSERT(reporter, positionRead[0].axis == SkSetFourByteTag('w','g','h','t'));
REPORTER_ASSERT(reporter, positionRead[0].value == 0.5);
}
DEF_TEST(Typeface, reporter) {
sk_sp<SkTypeface> t1(SkTypeface::MakeFromName(nullptr, SkFontStyle()));
sk_sp<SkTypeface> t2(SkTypeface::MakeDefault(SkTypeface::kNormal));
REPORTER_ASSERT(reporter, SkTypeface::Equal(t1.get(), t2.get()));
REPORTER_ASSERT(reporter, SkTypeface::Equal(0, t1.get()));
REPORTER_ASSERT(reporter, SkTypeface::Equal(0, t2.get()));
REPORTER_ASSERT(reporter, SkTypeface::Equal(t1.get(), 0));
REPORTER_ASSERT(reporter, SkTypeface::Equal(t2.get(), 0));
#ifdef SK_BUILD_FOR_ANDROID
sk_sp<SkTypeface> t3(SkTypeface::MakeFromName("non-existent-font", SkFontStyle()));
REPORTER_ASSERT(reporter, nullptr == t3);
#endif
}
namespace {
class SkEmptyTypeface : public SkTypeface {
public:
static sk_sp<SkTypeface> Create() { return sk_sp<SkTypeface>(new SkEmptyTypeface()); }
protected:
SkEmptyTypeface() : SkTypeface(SkFontStyle(), true) { }
SkStreamAsset* onOpenStream(int* ttcIndex) const override { return nullptr; }
SkScalerContext* onCreateScalerContext(const SkScalerContextEffects&,
const SkDescriptor*) const override {
return nullptr;
}
void onFilterRec(SkScalerContextRec*) const override { }
virtual SkAdvancedTypefaceMetrics* onGetAdvancedTypefaceMetrics(
PerGlyphInfo,
const uint32_t*, uint32_t) const override { return nullptr; }
void onGetFontDescriptor(SkFontDescriptor*, bool*) const override { }
virtual int onCharsToGlyphs(const void* chars, Encoding encoding,
uint16_t glyphs[], int glyphCount) const override {
SK_ABORT("unimplemented");
return 0;
}
int onCountGlyphs() const override { return 0; }
int onGetUPEM() const override { return 0; }
void onGetFamilyName(SkString* familyName) const override { familyName->reset(); }
SkTypeface::LocalizedStrings* onCreateFamilyNameIterator() const override {
SK_ABORT("unimplemented");
return nullptr;
}
int onGetVariationDesignPosition(SkFontArguments::VariationPosition::Coordinate coordinates[],
int coordinateCount) const override
{
return 0;
}
int onGetTableTags(SkFontTableTag tags[]) const override { return 0; }
size_t onGetTableData(SkFontTableTag, size_t, size_t, void*) const override { return 0; }
};
}
static bool count_proc(SkTypeface* face, void* ctx) {
int* count = static_cast<int*>(ctx);
*count = *count + 1;
return false;
}
static int count(skiatest::Reporter* reporter, const SkTypefaceCache& cache) {
int count = 0;
SkTypeface* none = cache.findByProcAndRef(count_proc, &count);
REPORTER_ASSERT(reporter, none == nullptr);
return count;
}
DEF_TEST(TypefaceCache, reporter) {
sk_sp<SkTypeface> t1(SkEmptyTypeface::Create());
{
SkTypefaceCache cache;
REPORTER_ASSERT(reporter, count(reporter, cache) == 0);
{
sk_sp<SkTypeface> t0(SkEmptyTypeface::Create());
cache.add(t0.get());
REPORTER_ASSERT(reporter, count(reporter, cache) == 1);
cache.add(t1.get());
REPORTER_ASSERT(reporter, count(reporter, cache) == 2);
cache.purgeAll();
REPORTER_ASSERT(reporter, count(reporter, cache) == 2);
}
REPORTER_ASSERT(reporter, count(reporter, cache) == 2);
cache.purgeAll();
REPORTER_ASSERT(reporter, count(reporter, cache) == 1);
}
REPORTER_ASSERT(reporter, t1->unique());
}
|
