1 // Copyright 2019 Google LLC.
2 #include "modules/skparagraph/include/TypefaceFontProvider.h"
3 #include <algorithm>
4 #include "include/core/SkFontMgr.h"
5 #include "include/core/SkString.h"
6 #include "include/core/SkTypeface.h"
7 #include "src/core/SkFontDescriptor.h"
8
9 namespace skia {
10 namespace textlayout {
11
onCountFamilies() const12 int TypefaceFontProvider::onCountFamilies() const { return fRegisteredFamilies.count(); }
13
onGetFamilyName(int index,SkString * familyName) const14 void TypefaceFontProvider::onGetFamilyName(int index, SkString* familyName) const {
15 SkASSERT(index < fRegisteredFamilies.count());
16 familyName->set(fFamilyNames[index]);
17 }
18
onMatchFamily(const char familyName[]) const19 SkFontStyleSet* TypefaceFontProvider::onMatchFamily(const char familyName[]) const {
20 auto found = fRegisteredFamilies.find(SkString(familyName));
21 if (found) {
22 return SkRef((*found).get());
23 }
24 return nullptr;
25 }
26
registerTypeface(sk_sp<SkTypeface> typeface)27 size_t TypefaceFontProvider::registerTypeface(sk_sp<SkTypeface> typeface) {
28 if (typeface == nullptr) {
29 return 0;
30 }
31
32 SkString familyName;
33 typeface->getFamilyName(&familyName);
34
35 return registerTypeface(std::move(typeface), std::move(familyName));
36 }
37
registerTypeface(sk_sp<SkTypeface> typeface,const SkString & familyName)38 size_t TypefaceFontProvider::registerTypeface(sk_sp<SkTypeface> typeface, const SkString& familyName) {
39 if (familyName.size() == 0) {
40 return 0;
41 }
42
43 auto found = fRegisteredFamilies.find(familyName);
44 if (typeface != nullptr) {
45 if (found == nullptr) {
46 found = fRegisteredFamilies.set(familyName, sk_make_sp<TypefaceFontStyleSet>(familyName));
47 fFamilyNames.emplace_back(familyName);
48 }
49
50 (*found)->appendTypeface(std::move(typeface));
51 } else if (found != nullptr) {
52 (*found)->clearTypefaces();
53 fRegisteredFamilies.remove(familyName);
54 for (size_t i = 0; i < fFamilyNames.size(); i++) {
55 if (fFamilyNames[i] == familyName) {
56 fFamilyNames.removeShuffle(i);
57 break;
58 }
59 }
60 }
61
62 return 1;
63 }
64
TypefaceFontStyleSet(const SkString & familyName)65 TypefaceFontStyleSet::TypefaceFontStyleSet(const SkString& familyName)
66 : fFamilyName(familyName) {}
67
count()68 int TypefaceFontStyleSet::count() { return fStyles.size(); }
69
getStyle(int index,SkFontStyle * style,SkString * name)70 void TypefaceFontStyleSet::getStyle(int index, SkFontStyle* style, SkString* name) {
71 SkASSERT(index < fStyles.size());
72 if (style) {
73 *style = fStyles[index]->fontStyle();
74 }
75 if (name) {
76 *name = fFamilyName;
77 }
78 }
79
createTypeface(int index)80 SkTypeface* TypefaceFontStyleSet::createTypeface(int index) {
81 SkASSERT(index < fStyles.size());
82 return SkRef(fStyles[index].get());
83 }
84
matchStyle(const SkFontStyle & pattern)85 SkTypeface* TypefaceFontStyleSet::matchStyle(const SkFontStyle& pattern) {
86 return this->matchStyleCSS3(pattern);
87 }
88
appendTypeface(sk_sp<SkTypeface> typeface)89 void TypefaceFontStyleSet::appendTypeface(sk_sp<SkTypeface> typeface) {
90 if (typeface.get() != nullptr) {
91 fStyles.emplace_back(std::move(typeface));
92 }
93 }
94
clearTypefaces()95 void TypefaceFontStyleSet::clearTypefaces() {
96 fStyles.reset();
97 }
98
99 } // namespace textlayout
100 } // namespace skia
101