def findSizes(self, font): fontDatabase = QFontDatabase() currentSize = self.sizeCombo.currentText() self.sizeCombo.blockSignals(True) self.sizeCombo.clear() if fontDatabase.isSmoothlyScalable(font.family(), fontDatabase.styleString(font)): for size in QFontDatabase.standardSizes(): self.sizeCombo.addItem(str(size)) self.sizeCombo.setEditable(True) else: for size in fontDatabase.smoothSizes(font.family(), fontDatabase.styleString(font)): self.sizeCombo.addItem(str(size)) self.sizeCombo.setEditable(False) self.sizeCombo.blockSignals(False) sizeIndex = self.sizeCombo.findText(currentSize) if sizeIndex == -1: self.sizeCombo.setCurrentIndex(max(0, self.sizeCombo.count() / 3)) else: self.sizeCombo.setCurrentIndex(sizeIndex)