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Prepared the OS X backend for adding feature attributes. Each feature will be a separate attribute for better composability.

This commit is contained in:
Pietro Gagliardi 2017-02-13 10:34:25 -05:00
parent ff986858f1
commit 9a19c65323
1 changed files with 28 additions and 19 deletions
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47
darwin/attrstr.m
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@ -12,23 +12,32 @@ struct foreachParams {
NSMutableArray *backgroundBlocks;
};
#define maxFeatures 32
struct fontParams {
uiDrawFontDescriptor desc;
uint16_t featureTypes[maxFeatures];
uint16_t featureSpecifiers[maxFeatures];
size_t nFeatures;
};
static void ensureFontInRange(struct foreachParams *p, size_t start, size_t end)
{
size_t i;
NSNumber *n;
uiDrawFontDescriptor *new;
struct fontParams *new;
for (i = start; i < end; i++) {
n = [NSNumber numberWithInteger:i];
if ([p->converted objectForKey:n] != nil)
continue;
new = uiNew(uiDrawFontDescriptor);
*new = *(p->defaultFont);
new = uiNew(struct fontParams);
new->desc = *(p->defaultFont);
[p->converted setObject:[NSValue valueWithPointer:new] forKey:n];
}
}
static void adjustFontInRange(struct foreachParams *p, size_t start, size_t end, void (^adj)(uiDrawFontDescriptor *desc))
static void adjustFontInRange(struct foreachParams *p, size_t start, size_t end, void (^adj)(struct fontParams *fp))
{
size_t i;
NSNumber *n;
@ -37,7 +46,7 @@ static void adjustFontInRange(struct foreachParams *p, size_t start, size_t end,
for (i = start; i < end; i++) {
n = [NSNumber numberWithInteger:i];
v = (NSValue *) [p->converted objectForKey:n];
adj((uiDrawFontDescriptor *) [v pointerValue]);
adj((struct fontParams *) [v pointerValue]);
}
}
@ -74,32 +83,32 @@ static int processAttribute(uiAttributedString *s, uiAttributeSpec *spec, size_t
switch (spec->Type) {
case uiAttributeFamily:
ensureFontInRange(p, start, end);
adjustFontInRange(p, start, end, ^(uiDrawFontDescriptor *desc) {
desc->Family = (char *) (spec->Value);
adjustFontInRange(p, start, end, ^(struct fontParams *fp) {
fp->desc.Family = (char *) (spec->Value);
});
break;
case uiAttributeSize:
ensureFontInRange(p, start, end);
adjustFontInRange(p, start, end, ^(uiDrawFontDescriptor *desc) {
desc->Size = spec->Double;
adjustFontInRange(p, start, end, ^(struct fontParams *fp) {
fp->desc.Size = spec->Double;
});
break;
case uiAttributeWeight:
ensureFontInRange(p, start, end);
adjustFontInRange(p, start, end, ^(uiDrawFontDescriptor *desc) {
desc->Weight = (uiDrawTextWeight) (spec->Value);
adjustFontInRange(p, start, end, ^(struct fontParams *fp) {
fp->desc.Weight = (uiDrawTextWeight) (spec->Value);
});
break;
case uiAttributeItalic:
ensureFontInRange(p, start, end);
adjustFontInRange(p, start, end, ^(uiDrawFontDescriptor *desc) {
desc->Italic = (uiDrawTextItalic) (spec->Value);
adjustFontInRange(p, start, end, ^(struct fontParams *fp) {
fp->desc.Italic = (uiDrawTextItalic) (spec->Value);
});
break;
case uiAttributeStretch:
ensureFontInRange(p, start, end);
adjustFontInRange(p, start, end, ^(uiDrawFontDescriptor *desc) {
desc->Stretch = (uiDrawTextStretch) (spec->Value);
adjustFontInRange(p, start, end, ^(struct fontParams *fp) {
fp->desc.Stretch = (uiDrawTextStretch) (spec->Value);
});
break;
case uiAttributeColor:
@ -144,17 +153,17 @@ static CTFontRef fontdescToCTFont(uiDrawFontDescriptor *fd)
static void applyAndFreeFontAttributes(struct foreachParams *p)
{
[p->converted enumerateKeysAndObjectsUsingBlock:^(NSNumber *key, NSValue *val, BOOL *stop) {
uiDrawFontDescriptor *desc;
struct fontParams *fp;
CTFontRef font;
CFRange range;
desc = (uiDrawFontDescriptor *) [val pointerValue];
font = fontdescToCTFont(desc);
fp = (struct fontParams *) [val pointerValue];
font = fontdescToCTFont(&(fp->desc));
range.location = [key integerValue];
range.length = 1;
CFAttributedStringSetAttribute(p->mas, range, kCTFontAttributeName, font);
CFRelease(font);
uiFree(desc);
uiFree(fp);
}];
}