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(SkNEW(SkTypeface_Empty));
}
}
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()));
SkAutoTDelete<SkStream> stream(SkStream::NewFromFile(filename.c_str()));
if (!stream.get()) {
SkDebugf("---- failed to open <%s>\n", filename.c_str());
continue;
}
int numFaces;
if (!scanner.recognizedFont(stream, &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, faceIndex, &realname, &style, &isFixedPitch, NULL)) {
SkDebugf("---- failed to open <%s> <%d> as a font\n",
filename.c_str(), faceIndex);
continue;
}
SkTypeface_Custom* tf = SkNEW_ARGS(SkTypeface_File, (
style,
isFixedPitch,
true, // system-font (cannot delete)
realname,
filename.c_str(),
faceIndex));
SkFontStyleSet_Custom* addTo = find_family(*families, realname.c_str());
if (NULL == addTo) {
addTo = new SkFontStyleSet_Custom(realname);
families->push_back().reset(addTo);
}
addTo->appendTypeface(tf);
}
}
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);
}
}
static void load_directory_fonts(const SkString& directory, unsigned int* count) {
SkOSFile::Iter iter(directory.c_str(), ".ttf");
SkString name;
while (iter.next(&name, false)) {
SkString filename(directory);
filename.append(name);
bool isFixedWidth;
SkString realname;
SkTypeface::Style style = SkTypeface::kNormal; // avoid uninitialized warning
if (!get_name_and_style(filename.c_str(), &realname, &style, &isFixedWidth)) {
SkDebugf("------ can't load <%s> as a font\n", filename.c_str());
continue;
}
FamilyRec* family = find_familyrec(realname.c_str());
if (family && family->fFaces[style]) {
continue;
}
// this constructor puts us into the global gFamilyHead llist
FamilyTypeface* tf = SkNEW_ARGS(FileTypeface,
(style,
true, // system-font (cannot delete)
family, // what family to join
filename.c_str(),
isFixedWidth) // filename
);
if (NULL == family) {
add_name(realname.c_str(), tf->getFamily());
}
*count += 1;
}
SkOSFile::Iter dirIter(directory.c_str());
while (dirIter.next(&name, true)) {
if (name.startsWith(".")) {
continue;
}
SkString dirname(directory);
dirname.append(name);
dirname.append(SK_FONT_FILE_DIR_SEPERATOR);
load_directory_fonts(dirname, count);
}
}
static void load_system_fonts() {
// check if we've already be called
if (NULL != gDefaultNormal) {
return;
}
SkString baseDirectory(SK_FONT_FILE_PREFIX);
unsigned int count = 0;
load_directory_fonts(baseDirectory, &count);
if (0 == count) {
SkNEW(EmptyTypeface);
}
// do this after all fonts are loaded. This is our default font, and it
// acts as a sentinel so we only execute load_system_fonts() once
static const char* gDefaultNames[] = {
#if defined(__LB_SHELL__)
"Droid Sans", // our preferred default
#endif
"Arial", "Verdana", "Times New Roman", NULL
};
const char** names = gDefaultNames;
while (*names) {
SkTypeface* tf = find_typeface(*names++, SkTypeface::kNormal);
if (tf) {
gDefaultNormal = tf;
break;
}
}
// check if we found *something*
if (NULL == gDefaultNormal) {
if (NULL == gFamilyHead) {
sk_throw();
}
for (int i = 0; i < 4; i++) {
if ((gDefaultNormal = gFamilyHead->fFaces[i]) != NULL) {
break;
}
}
}
if (NULL == gDefaultNormal) {
sk_throw();
}
gFallBackTypeface = gDefaultNormal;
gDefaultFamily = find_family(gDefaultNormal);
}
