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- /*
- * Copyright 2017 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "include/core/SkStream.h"
- #include "include/ports/SkFontMgr_directory.h"
- #include "src/core/SkOSFile.h"
- #include "src/ports/SkFontMgr_custom.h"
- #include "src/utils/SkOSPath.h"
- class DirectorySystemFontLoader : public SkFontMgr_Custom::SystemFontLoader {
- public:
- DirectorySystemFontLoader(const char* dir) : fBaseDirectory(dir) { }
- void loadSystemFonts(const SkTypeface_FreeType::Scanner& scanner,
- SkFontMgr_Custom::Families* families) const override
- {
- load_directory_fonts(scanner, fBaseDirectory, ".ttf", families);
- load_directory_fonts(scanner, fBaseDirectory, ".ttc", families);
- load_directory_fonts(scanner, fBaseDirectory, ".otf", families);
- load_directory_fonts(scanner, fBaseDirectory, ".pfb", families);
- if (families->empty()) {
- SkFontStyleSet_Custom* family = new SkFontStyleSet_Custom(SkString());
- families->push_back().reset(family);
- family->appendTypeface(sk_make_sp<SkTypeface_Empty>());
- }
- }
- private:
- static SkFontStyleSet_Custom* find_family(SkFontMgr_Custom::Families& families,
- const char familyName[])
- {
- for (int i = 0; i < families.count(); ++i) {
- if (families[i]->getFamilyName().equals(familyName)) {
- return families[i].get();
- }
- }
- return nullptr;
- }
- static void load_directory_fonts(const SkTypeface_FreeType::Scanner& scanner,
- const SkString& directory, const char* suffix,
- SkFontMgr_Custom::Families* families)
- {
- SkOSFile::Iter iter(directory.c_str(), suffix);
- SkString name;
- while (iter.next(&name, false)) {
- SkString filename(SkOSPath::Join(directory.c_str(), name.c_str()));
- std::unique_ptr<SkStreamAsset> stream = SkStream::MakeFromFile(filename.c_str());
- if (!stream) {
- // SkDebugf("---- failed to open <%s>\n", filename.c_str());
- continue;
- }
- int numFaces;
- if (!scanner.recognizedFont(stream.get(), &numFaces)) {
- // SkDebugf("---- failed to open <%s> as a font\n", filename.c_str());
- continue;
- }
- for (int faceIndex = 0; faceIndex < numFaces; ++faceIndex) {
- bool isFixedPitch;
- SkString realname;
- SkFontStyle style = SkFontStyle(); // avoid uninitialized warning
- if (!scanner.scanFont(stream.get(), faceIndex,
- &realname, &style, &isFixedPitch, nullptr))
- {
- // SkDebugf("---- failed to open <%s> <%d> as a font\n",
- // filename.c_str(), faceIndex);
- continue;
- }
- SkFontStyleSet_Custom* addTo = find_family(*families, realname.c_str());
- if (nullptr == addTo) {
- addTo = new SkFontStyleSet_Custom(realname);
- families->push_back().reset(addTo);
- }
- addTo->appendTypeface(sk_make_sp<SkTypeface_File>(style, isFixedPitch, true,
- realname, filename.c_str(),
- faceIndex));
- }
- }
- SkOSFile::Iter dirIter(directory.c_str());
- while (dirIter.next(&name, true)) {
- if (name.startsWith(".")) {
- continue;
- }
- SkString dirname(SkOSPath::Join(directory.c_str(), name.c_str()));
- load_directory_fonts(scanner, dirname, suffix, families);
- }
- }
- SkString fBaseDirectory;
- };
- SK_API sk_sp<SkFontMgr> SkFontMgr_New_Custom_Directory(const char* dir) {
- return sk_make_sp<SkFontMgr_Custom>(DirectorySystemFontLoader(dir));
- }
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