CTRunGetImageBounds returning inaccurate results

Question

I am using Core Text to draw some text. I would like to get the various run bounds, but when I call CTRunGetImageBounds, the rect that is returned is the correct si

Answer 1

Here is what I came up with. This is completely accurate.

CTFrameRef frame = [self _frameWithRect:rect];

NSArray *lines = (NSArray *)CTFrameGetLines(frame);

CGPoint origins[[lines count]];//the origins of each line at the baseline
CTFrameGetLineOrigins(frame, CFRangeMake(0, 0), origins);

NSUInteger lineIndex = 0;
for (id lineObj in lines) {
    CTLineRef line = (CTLineRef)lineObj;

    for (id runObj in (NSArray *)CTLineGetGlyphRuns(line)) {
        CTRunRef run = (CTRunRef)runObj;
        CFRange runRange = CTRunGetStringRange(run);

        CGRect runBounds;

        CGFloat ascent;//height above the baseline
        CGFloat descent;//height below the baseline
        runBounds.size.width = CTRunGetTypographicBounds(run, CFRangeMake(0, 0), &ascent, &descent, NULL);
        runBounds.size.height = ascent + descent;

        CGFloat xOffset = CTLineGetOffsetForStringIndex(line, CTRunGetStringRange(run).location, NULL);
        runBounds.origin.x = origins[lineIndex].x + rect.origin.x + xOffset;
        runBounds.origin.y = origins[lineIndex].y + rect.origin.y;
        runBounds.origin.y -= descent;

        //do something with runBounds
    }
    lineIndex++;
}