wiggly.py 文件源码

def paintEvent(self, event):
        sineTable = (0, 38, 71, 92, 100, 92, 71, 38, 0, -38, -71, -92, -100, -92, -71, -38)

        metrics = QFontMetrics(self.font())
        x = (self.width() - metrics.width(self.text)) / 2
        y = (self.height() + metrics.ascent() - metrics.descent()) / 2
        color = QColor()

        painter = QPainter(self)

        for i, ch in enumerate(self.text):
            index = (self.step + i) % 16
            color.setHsv((15 - index) * 16, 255, 191)
            painter.setPen(color)
            painter.drawText(x, y - ((sineTable[index] * metrics.height()) / 400), ch)
            x += metrics.width(ch)