Added code that handles all the attribute stuff for a CTFontRef AND CTFontDescriptorRef for us; we'll use this throughout the various font style files instead of doing everything ourselves.
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Pietro Gagliardi
parent
be6a07755b
commit
4e7fb5e264
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@ -25,6 +25,263 @@
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// because the descriptors returned by Core Text's own font
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// matching won't have any.
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@implementation fontStyleData
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- (id)initWithFont:(CTFontRef)f
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{
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self = [super init];
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if (self) {
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self->font = f;
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CFRetain(self->font);
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self->desc = CTFontCopyDescriptor(self->font);
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if (![self prepare]) {
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[self release];
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return nil;
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}
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}
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return self;
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}
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- (id)initWithDescriptor:(CTFontDescriptorRef)d
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{
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self = [super init];
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if (self) {
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self->font = NULL;
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self->desc = d;
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CFRetain(self->desc);
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if (![self prepare]) {
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[self release];
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return nil;
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}
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}
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return self;
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}
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- (void)dealloc
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{
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#define REL(x) if (x != NULL) { CFRelease(x); x = NULL; }
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REL(self->variationAxes);
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REL(self->familyName);
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REL(self->preferredFamilyName);
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REL(self->fullName);
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REL(self->subFamilyName);
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REL(self->preferredSubFamilyName);
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REL(self->postScriptName);
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REL(self->variations);
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REL(self->styleName);
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REL(self->traits);
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CFRelease(self->desc);
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REL(self->font);
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[super dealloc];
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}
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- (BOOL)prepare
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{
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CFNumberRef num;
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self->traits = NULL;
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self->symbolic = 0;
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self->weight = 0;
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self->width = 0;
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self->didStyleName = NO;
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self->styleName = NULL;
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self->didVariations = NO;
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self->variations = NULL;
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self->didRegistrationScope = NO;
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self->hasRegistrationScope = NO;
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self->registrationScope = 0;
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self->didPostScriptName = NO;
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self->postScriptName = NULL;
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self->didFontFormat = NO;
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self->fontFormat = 0;
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self->didPreferredSubFamilyName = NO;
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self->preferredSubFamilyName = NULL;
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self->didSubFamilyName = NO;
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self->subFamilyName = NULL;
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self->didFullName = NO;
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self->fullName = NULL;
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self->didPreferredFamilyName = NO;
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self->preferredFamilyName = NULL;
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self->didFamilyName = NO;
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self->familyName = NULL;
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self->didVariationAxes = NO;
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self->variationAxes = NULL;
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self->traits = (CFDictionaryRef) CTFontDescriptorCopyAttribute(self->desc, kCTFontTraitsAttribute);
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if (self->traits == NULL)
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return NO;
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num = (CFNumberRef) CFDictionaryGetValue(self->traits, kCTFontSymbolicTrait);
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if (num == NULL)
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return NO;
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if (CFNumberGetValue(num, kCFNumberSInt32Type, &(self->symbolic)) == false)
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return NO;
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num = (CFNumberRef) CFDictionaryGetValue(self->traits, kCTFontWeightTrait);
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if (num == NULL)
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return NO;
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if (CFNumberGetValue(num, kCFNumberDoubleType, &(self->weight)) == false)
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return NO;
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num = (CFNumberRef) CFDictionaryGetValue(self->traits, kCTFontWidthTrait);
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if (num == NULL)
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return NO;
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if (CFNumberGetValue(num, kCFNumberDoubleType, &(self->width)) == false)
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return NO;
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return YES;
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}
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- (void)ensureFont
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{
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if (self->font != NULL)
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return;
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self->font = CTFontCreateWithFontDescriptor(self->desc, 0.0, NULL);
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}
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- (CTFontSymbolicTraits)symbolicTraits
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{
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return self->symbolic;
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}
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- (double)weight
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{
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return self->weight;
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}
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- (double)width
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{
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return self->width;
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}
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- (CFStringRef)styleName
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{
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if (!self->didStyleName) {
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self->didStyleName = YES;
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self->styleName = (CFStringRef) CTFontDescriptorCopyAttribute(self->desc, kCTFontStyleNameAttribute);
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// The code we use this for (guessItalicOblique() below) checks if this is NULL or not, so we're good.
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}
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return self->styleName;
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}
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- (CFDictionaryRef)variations
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{
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if (!self->didVariations) {
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self->didVariations = YES;
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self->variations = (CFDictionaryRef) CTFontDescriptorCopyAttribute(self->desc, kCTFontVariationsAttribute);
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// This being NULL is used to determine whether a font uses variations at all, so we don't need to worry now.
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}
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return self->variations;
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}
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- (BOOL)hasRegistrationScope
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{
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if (!self->didRegistrationScope) {
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CFNumberRef num;
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self->didRegistrationScope = YES;
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num = (CFNumberRef) CTFontDescriptorCopyAttribute(desc, kCTFontRegistrationScopeAttribute);
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self->hasRegistrationScope = num != NULL;
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if (self->hasRegistrationScope) {
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if (CFNumberGetValue(num, kCFNumberSInt32Type, &(self->registrationScope)) == false) {
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// TODO
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}
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CFRelease(num);
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}
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}
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return self->hasRegistrationScope;
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}
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- (CTFontManagerScope)registrationScope
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{
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[self hasRegistrationScope];
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return self->registrationScope;
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}
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- (CFStringRef)postScriptName
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{
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if (!self->didPostScriptName) {
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self->didPostScriptName = YES;
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[self ensureFont];
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self->postScriptName = CTFontCopyPostScriptName(self->font);
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}
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return self->postScriptName;
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}
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- (CFDataRef)table:(CTFontTableTag)tag
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{
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[self ensureFont];
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return CTFontCopyTable(self->font, tag, kCTFontTableOptionNoOptions);
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}
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- (CTFontFormat)fontFormat
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{
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if (!self->didFontFormat) {
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CFNumberRef num;
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self->didFontFormat = YES;
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num = (CFNumberRef) CTFontDescriptorCopyAttribute(self->desc, kCTFontFormatAttribute);
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if (num == NULL) {
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// TODO
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}
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if (CFNumberGetValue(num, kCFNumberSInt32Type, &(self->fontFormat)) == false) {
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// TODO
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}
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CFRelease(num);
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}
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return self->fontFormat;
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}
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// We don't need to worry if this or any of the functions that use it return NULL, because the code that uses it (libFontRegistry.dylib bug workarounds in fonttraits.m) checks for NULL.
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- (CFStringRef)fontName:(CFStringRef)key
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{
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[self ensureFont];
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return CTFontCopyName(self->font, key);
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}
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#define FONTNAME(sel, did, var, key) \
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- (CFString)sel \
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{ \
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if (!did) { \
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did = YES; \
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var = [self fontName:key]; \
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} \
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return var; \
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}
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FONTNAME(preferredSubFamilyName,
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self->didPreferredSubFamilyName,
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self->preferredSubFamilyName,
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kCTFontPreferredSubFamilyNameKey)
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FONTNAME(subFamilyName,
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self->didSubFamilyName,
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self->subFamilyName,
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kCTFontSubFamilyNameKey)
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FONTNAME(fullName,
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self->didFullName,
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self->fullName,
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kCTFontFullNameKey)
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FONTNAME(preferredFamilyName,
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self->didPreferredFamilyName,
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self->preferredFamilyName,
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kCTFontPreferredFamilyNameKey)
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FONTNAME(familyName,
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self->didFamilyName,
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self->familyName,
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kCTFontFamilyNameKey)
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- (CFArrayRef)variationAxes
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{
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if (!self->didVariationAxes) {
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self->didVariationAxes = YES;
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[self ensureFont];
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self->variationAxes = CTFontCopyVariationAxes(self->font);
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// We don't care about the return value because we call this only on fonts that we know have variations anyway.
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}
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return self->variationAxes;
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}
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@end
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struct closeness {
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CFIndex index;
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double weight;
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@ -0,0 +1,56 @@
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// 3 november 2017
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// fontstyle.m
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@interface fontStyleData : NSObject {
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CTFontRef font;
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CTFontDescriptorRef desc;
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CFDictionaryRef traits;
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CTFontSymbolicTraits symbolic;
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double weight;
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double width;
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BOOL didStyleName;
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CFStringRef styleName;
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BOOL didVariations;
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CFDictionaryRef variations;
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BOOL didRegistrationScope;
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BOOL hasRegistrationScope;
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CTFontManagerScope registrationScope;
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BOOL didPostScriptName;
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CFStringRef postScriptName;
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BOOL didFontFormat;
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CTFontFormat fontFormat;
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BOOL didPreferredSubFamilyName;
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CFStringRef preferredSubFamilyName;
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BOOL didSubFamilyName;
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CFStringRef subFamilyName;
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BOOL didFullName;
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CFStringRef fullName;
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BOOL didPreferredFamilyName;
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CFStringRef preferredFamilyName;
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BOOL didFamilyName;
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CFStringRef familyName;
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BOOL didVariationAxes;
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CFArrayRef variationAxes;
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}
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- (id)initWithFont:(CTFontRef)f;
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- (id)initWithDescriptor:(CTFontDescriptorRef)d;
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- (BOOL)prepare;
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- (void)ensureFont;
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- (CTFontSymbolicTraits)symbolicTraits;
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- (double)weight;
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- (double)width;
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- (CFStringRef)styleName;
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- (CFDictionaryRef)variations;
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- (BOOL)hasRegistrationScope;
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- (CTFontManagerScope)registrationScope;
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- (CFStringRef)postScriptName;
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- (CFDataRef)table:(CTFontTableTag)tag;
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- (CTFontFormat)fontFormat;
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- (CFStringRef)fontName:(CFStringRef)key;
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- (CFStringRef)preferredSubFamilyName;
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- (CFStringRef)subFamilyName;
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- (CFStringRef)fullName;
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- (CFStringRef)preferredFamilyName;
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- (CFStringRef)familyName;
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- (CFArrayRef)variationAxes;
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@end
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