def findAscent(self, font): dummy = "E" white = QColor(Qt.white) fm = self.fontmetrics(font) pm = QPixmap(fm.width(dummy), fm.height()) pm.fill(white) p = QPainter(pm) p.setFont(font) p.drawText(0, 0, pm.width(), pm.height(), 0, dummy) p.end() img = pm.toImage() w = pm.width() linebytes = w * 4 for row in range(img.height()): line = img.scanLine(row).asstring(linebytes) for col in range(w): color = struct.unpack('I', line[col * 4:(col + 1) * 4])[0] if color != white.rgb(): return fm.ascent() - row + 1 return fm.ascent()
def findAscent(self, font): dummy = "E" white = QColor(Qt.white) fm = self.fontmetrics(font) pm = QPixmap(fm.width(dummy), fm.height()) pm.fill(white) p = QPainter(pm) p.setFont(font) p.drawText(0, 0, pm.width(), pm.height(), 0, dummy) p.end() img = pm.toImage() w = pm.width() linebytes = w*4 for row in range(img.height()): line = img.scanLine(row).asstring(linebytes) for col in range(w): color = struct.unpack('I', line[col*4:(col+1)*4])[0] if color != white.rgb(): return fm.ascent()-row+1 return fm.ascent()