listOfGlyphRuns.py

import AppKit
import CoreText

x, y, w, h = 100, 100, 300, 500


f = FormattedString()
f.fontSize(12)
f += "hello"
f.fill(1, 0, 0)
f += "qsdfqsdf"
f.font("Helvetica-Oblique")
f += "foo"
f.fontSize(42)
f += "bar"

textBox(f, (x, y, w, h))

### 

runData = list()

path = CoreText.CGPathCreateMutable()
CoreText.CGPathAddRect(path, None, CoreText.CGRectMake(x, y, w, h))

attrString = f.getNSObject()
txt = attrString.string()

setter = CoreText.CTFramesetterCreateWithAttributedString(attrString)
frame = CoreText.CTFramesetterCreateFrame(setter, (0, 0), path, None)

ctLines = CoreText.CTFrameGetLines(frame)
origins = CoreText.CTFrameGetLineOrigins(frame, (0, len(ctLines)), None)

for i, (originX, originY) in enumerate(origins):
    ctLine = ctLines[i]
    ctRuns = CoreText.CTLineGetGlyphRuns(ctLine)
    for ctRun in ctRuns:
        stringRange = CoreText.CTRunGetStringRange(ctRun)        
        runPos = CoreText.CTRunGetPositions(ctRun, (0, 1), None)[0]
        runW, runH, ascent, _ = CoreText.CTRunGetTypographicBounds(ctRun, (0, 0), None, None, None)        

        runTxt = txt.substringWithRange_((stringRange.location, stringRange.length))        
        runData.append(((x+originX + runPos.x, y + originY + runPos.y, runW, runH), runTxt))
        
        
        fill(random(), random(), random(), .5)
        rect(x+originX + runPos.x, y + originY + runPos.y - ascent, runW, runH + ascent)        
        
        
print(runData)