SkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace,
const char familyName[],
const void* data, size_t bytelength,
SkTypeface::Style style) {
load_system_fonts();
SkAutoMutexAcquire ac(gFamilyMutex);
// clip to legal style bits
style = (SkTypeface::Style)(style & SkTypeface::kBoldItalic);
SkTypeface* tf = NULL;
if (NULL != familyFace) {
tf = find_typeface(familyFace, style);
} else if (NULL != familyName) {
// SkDebugf("======= familyName <%s>\n", familyName);
tf = find_typeface(familyName, style);
}
if (NULL == tf) {
tf = find_best_face(gDefaultFamily, style);
}
SkSafeRef(tf);
return tf;
}
SkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace,
const char familyName[],
SkTypeface::Style style) {
SkAutoMutexAcquire ac(gFamilyHeadAndNameListMutex);
load_system_fonts();
// clip to legal style bits
style = (SkTypeface::Style)(style & SkTypeface::kBoldItalic);
SkTypeface* tf = NULL;
if (NULL != familyFace) {
tf = find_typeface(familyFace, style);
} else if (NULL != familyName) {
// SkDebugf("======= familyName <%s>\n", familyName);
tf = find_typeface(familyName, style);
}
if (NULL == tf) {
tf = find_best_face(gDefaultFamily, style);
}
// we ref(), since the semantic is to return a new instance
tf->ref();
return tf;
}
static SkTypeface* find_typeface(const char name[], SkTypeface::Style style) {
NameFamilyPair* list = gNameList.begin();
int count = gNameList.count();
int index = SkStrLCSearch(&list[0].fName, count, name, sizeof(list[0]));
if (index >= 0) {
return find_best_face(list[index].fFamily, style);
}
return NULL;
}
static SkTypeface* find_typeface(const SkTypeface* familyMember,
SkTypeface::Style style) {
const FamilyRec* family = find_family(familyMember);
return family ? find_best_face(family, style) : NULL;
}
static SkTypeface* find_typeface(const char name[], SkTypeface::Style style) {
FamilyRec* rec = find_familyrec(name);
return rec ? find_best_face(rec, style) : NULL;
}
/* Called once (ensured by the sentinel check at the beginning of our body).
Initializes all the globals, and register the system fonts.
*/
static void load_system_fonts() {
// check if we've already be called
if (NULL != gDefaultNormal) {
return;
}
const FontInitRec* rec = gSystemFonts;
SkTypeface* firstInFamily = NULL;
int fallbackCount = 0;
for (size_t i = 0; i < SK_ARRAY_COUNT(gSystemFonts); i++) {
// if we're the first in a new family, clear firstInFamily
if (rec[i].fNames != NULL) {
firstInFamily = NULL;
}
SkString name;
SkTypeface::Style style;
// we expect all the fonts, except the "fallback" fonts
bool isExpected = (rec[i].fNames != gFBNames);
if (!get_name_and_style(rec[i].fFileName, &name, &style, isExpected)) {
continue;
}
SkTypeface* tf = SkNEW_ARGS(FileTypeface,
(style,
true, // system-font (cannot delete)
firstInFamily, // what family to join
rec[i].fFileName) // filename
);
if (rec[i].fNames != NULL) {
// see if this is one of our fallback fonts
if (rec[i].fNames == gFBNames) {
// SkDebugf("---- adding %s as fallback[%d] fontID %d\n",
// rec[i].fFileName, fallbackCount, tf->uniqueID());
gFallbackFonts[fallbackCount++] = tf->uniqueID();
}
firstInFamily = tf;
FamilyRec* family = find_family(tf);
const char* const* names = rec[i].fNames;
// record the default family if this is it
if (names == DEFAULT_NAMES) {
gDefaultFamily = family;
}
// add the names to map to this family
while (*names) {
add_name(*names, family);
names += 1;
}
}
}
// 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
gDefaultNormal = find_best_face(gDefaultFamily, SkTypeface::kNormal);
// now terminate our fallback list with the sentinel value
gFallbackFonts[fallbackCount] = 0;
}
/*
* Called once (ensured by the sentinel check at the beginning of our body).
* Initializes all the globals, and register the system fonts.
*
* gFamilyHeadAndNameListMutex must already be acquired.
*/
static void init_system_fonts() {
// check if we've already been called
if (gDefaultNormal) {
return;
}
SkASSERT(gUniqueFontID == 0);
load_font_info();
FontInitRec* rec = gSystemFonts;
SkTypeface* firstInFamily = NULL;
int fallbackCount = 0;
for (size_t i = 0; i < gNumSystemFonts; i++) {
// if we're the first in a new family, clear firstInFamily
if (rec[i].fNames != NULL) {
firstInFamily = NULL;
}
bool isFixedWidth;
SkString name;
SkTypeface::Style style;
// we expect all the fonts, except the "fallback" fonts
bool isExpected = (rec[i].fNames != gFBNames);
if (!get_name_and_style(rec[i].fFileName, &name, &style,
&isFixedWidth, isExpected)) {
// We need to increase gUniqueFontID here so that the unique id of
// each font matches its index in gSystemFonts array, as expected
// by find_uniqueID.
sk_atomic_inc(&gUniqueFontID);
continue;
}
SkTypeface* tf = SkNEW_ARGS(FileTypeface,
(style,
true, // system-font (cannot delete)
firstInFamily, // what family to join
rec[i].fFileName,
isFixedWidth) // filename
);
#if SK_DEBUG_FONTS
SkDebugf("---- SkTypeface[%d] %s fontID %d",
i, rec[i].fFileName, tf->uniqueID());
#endif
if (rec[i].fNames != NULL) {
// see if this is one of our fallback fonts
if (rec[i].fNames == gFBNames) {
#if SK_DEBUG_FONTS
SkDebugf("---- adding %s as fallback[%d] fontID %d",
rec[i].fFileName, fallbackCount, tf->uniqueID());
#endif
gFallbackFonts[fallbackCount++] = tf->uniqueID();
// Use the font file name as the name of the typeface.
const char **nameList = (const char**)malloc(2 * sizeof(char*));
if (nameList == NULL) {
// shouldn't get here
SkDEBUGFAIL("Failed to allocate nameList");
break;
}
nameList[0] = rec[i].fFileName;
nameList[1] = NULL;
rec[i].fNames = nameList;
}
firstInFamily = tf;
FamilyRec* family = find_family(tf);
const char* const* names = rec[i].fNames;
// record the default family if this is it
if (names == gDefaultNames) {
gDefaultFamily = family;
}
// add the names to map to this family
while (*names) {
add_name(*names, family);
names += 1;
}
}
}
// 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
gDefaultNormal = find_best_face(gDefaultFamily, SkTypeface::kNormal);
// now terminate our fallback list with the sentinel value
gFallbackFonts[fallbackCount] = 0;
// SkDEBUGCODE(dump_globals());
}
