Test CTFontCreatePathForGlyph

ct.cc

// clang a.cc harfbuzz.o -std=c++11 -fno-exceptions -DHAVE_CORETEXT -framework CoreText -framework CoreFoundation -framework CoreGraphics && ./a.out
#include "src/hb-coretext.h"

static void _single_element_callback (void *info, const CGPathElement *element) 
{
    switch (element->type) {
    case kCGPathElementMoveToPoint:
        printf ("M%lf,%lf", element->points[0].x * 100, element->points[0].x * 100);
        break;
    case kCGPathElementAddLineToPoint:
        printf ("L%lf,%lf", element->points[0].x * 100, element->points[0].y * 100);
        break;
    case kCGPathElementAddQuadCurveToPoint:
        printf ("Q%lf,%lf %lf,%lf",
                element->points[0].x * 100, element->points[0].y * 100,
                element->points[1].x * 100, element->points[1].y * 100);
        break;
    case kCGPathElementAddCurveToPoint:
        printf ("Q%lf,%lf %lf,%lf %lf,%lf",
                element->points[0].x * 100, element->points[0].y * 100,
                element->points[1].x * 100, element->points[1].y * 100,
                element->points[2].x * 100, element->points[2].y * 100);
        break;
    case kCGPathElementCloseSubpath:
        printf ("Z");
        break;
    }
}

int main() {
    hb_blob_t *blob = hb_blob_create_from_file ("/System/Library/Fonts/NotoSansMyanmar.ttc");
    hb_face_t *face = hb_face_create (blob, 0);
    hb_font_t *font = hb_font_create (face);
    CTFontRef ref = hb_coretext_font_get_ct_font (font);
    CGPathRef path = CTFontCreatePathForGlyph (ref, 20, nullptr);
    CGPathApply(path, nullptr, (CGPathApplierFunction) _single_element_callback);
    return 0;
}