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
|
/*
* Copyright 2011 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkAdvancedTypefaceMetrics.h"
#include "SkTypeface.h"
#include "SkFontHost.h"
SK_DEFINE_INST_COUNT(SkTypeface)
//#define TRACE_LIFECYCLE
#ifdef TRACE_LIFECYCLE
static int32_t gTypefaceCounter;
#endif
SkTypeface::SkTypeface(Style style, SkFontID fontID, bool isFixedWidth)
: fUniqueID(fontID), fStyle(style), fIsFixedWidth(isFixedWidth) {
#ifdef TRACE_LIFECYCLE
SkDebugf("SkTypeface: create %p fontID %d total %d\n",
this, fontID, ++gTypefaceCounter);
#endif
}
SkTypeface::~SkTypeface() {
#ifdef TRACE_LIFECYCLE
SkDebugf("SkTypeface: destroy %p fontID %d total %d\n",
this, fUniqueID, --gTypefaceCounter);
#endif
}
///////////////////////////////////////////////////////////////////////////////
SkTypeface* SkTypeface::GetDefaultTypeface() {
// we keep a reference to this guy for all time, since if we return its
// fontID, the font cache may later on ask to resolve that back into a
// typeface object.
static SkTypeface* gDefaultTypeface;
if (NULL == gDefaultTypeface) {
gDefaultTypeface =
SkFontHost::CreateTypeface(NULL, NULL, SkTypeface::kNormal);
}
return gDefaultTypeface;
}
SkTypeface* SkTypeface::RefDefault() {
return SkRef(GetDefaultTypeface());
}
uint32_t SkTypeface::UniqueID(const SkTypeface* face) {
if (NULL == face) {
face = GetDefaultTypeface();
}
return face->uniqueID();
}
bool SkTypeface::Equal(const SkTypeface* facea, const SkTypeface* faceb) {
return SkTypeface::UniqueID(facea) == SkTypeface::UniqueID(faceb);
}
///////////////////////////////////////////////////////////////////////////////
SkTypeface* SkTypeface::CreateFromName(const char name[], Style style) {
return SkFontHost::CreateTypeface(NULL, name, style);
}
SkTypeface* SkTypeface::CreateFromTypeface(const SkTypeface* family, Style s) {
if (family && family->style() == s) {
family->ref();
return const_cast<SkTypeface*>(family);
}
return SkFontHost::CreateTypeface(family, NULL, s);
}
SkTypeface* SkTypeface::CreateFromStream(SkStream* stream) {
return SkFontHost::CreateTypefaceFromStream(stream);
}
SkTypeface* SkTypeface::CreateFromFile(const char path[]) {
return SkFontHost::CreateTypefaceFromFile(path);
}
///////////////////////////////////////////////////////////////////////////////
void SkTypeface::serialize(SkWStream* stream) const {
SkFontHost::Serialize(this, stream);
}
SkTypeface* SkTypeface::Deserialize(SkStream* stream) {
return SkFontHost::Deserialize(stream);
}
SkAdvancedTypefaceMetrics* SkTypeface::getAdvancedTypefaceMetrics(
SkAdvancedTypefaceMetrics::PerGlyphInfo info,
const uint32_t* glyphIDs,
uint32_t glyphIDsCount) const {
return this->onGetAdvancedTypefaceMetrics(info, glyphIDs, glyphIDsCount);
}
///////////////////////////////////////////////////////////////////////////////
int SkTypeface::countTables() const {
return SkFontHost::CountTables(fUniqueID);
}
int SkTypeface::getTableTags(SkFontTableTag tags[]) const {
return SkFontHost::GetTableTags(fUniqueID, tags);
}
size_t SkTypeface::getTableSize(SkFontTableTag tag) const {
return SkFontHost::GetTableSize(fUniqueID, tag);
}
size_t SkTypeface::getTableData(SkFontTableTag tag, size_t offset, size_t length,
void* data) const {
return SkFontHost::GetTableData(fUniqueID, tag, offset, length, data);
}
SkStream* SkTypeface::openStream(int* ttcIndex) const {
int ttcIndexStorage;
if (NULL == ttcIndex) {
// So our subclasses don't need to check for null param
ttcIndex = &ttcIndexStorage;
}
return this->onOpenStream(ttcIndex);
}
int SkTypeface::getUnitsPerEm() const {
// should we try to cache this in the base-class?
return this->onGetUPEM();
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
#include "SkFontDescriptor.h"
int SkTypeface::onGetUPEM() const {
int upem = 0;
SkAdvancedTypefaceMetrics* metrics;
metrics = this->getAdvancedTypefaceMetrics(
SkAdvancedTypefaceMetrics::kNo_PerGlyphInfo,
NULL, 0);
if (metrics) {
upem = metrics->fEmSize;
metrics->unref();
}
return upem;
}
SkStream* SkTypeface::onOpenStream(int* ttcIndex) const {
if (ttcIndex) {
int32_t ndx = 0;
(void)SkFontHost::GetFileName(fUniqueID, NULL, 0, &ndx);
*ttcIndex = (int)ndx;
}
return SkFontHost::OpenStream(fUniqueID);
}
int SkTypeface::onGetTableTags(SkFontTableTag tags[]) const { return 0; }
size_t SkTypeface::onGetTableData(SkFontTableTag, size_t offset,
size_t length, void* data) const { return 0; }
void SkTypeface::onGetFontDescriptor(SkFontDescriptor* desc) const {
desc->setStyle(this->style());
}
|
