matplotlibwidget.py 文件源码

def mouse_move(self, event):
        if not event.inaxes: return
        if self.x is None or self.y is None: return
        x, y = event.xdata, event.ydata
        idx = np.searchsorted(self.x, x)
        if idx >= len(self.x): return
        x = self.x[idx]
        y = self.y[idx]
        # update the line positions self.ly.set_xdata(x)
        self.lx.set_ydata(y)
        self.ly.set_xdata(x)

        text = []
        open = self.open[idx] if self.open is not None and idx < len(self.open) else None
        close = self.close[idx] if self.close is not None and idx < len(self.close) else None
        high = self.high[idx] if self.high is not None and idx < len(self.high) else None
        low = self.low[idx] if self.low is not None and idx < len(self.low) else None
        vol = self.vol[idx] if self.vol is not None and idx < len(self.vol) else None
        day = mdates.num2date(x)
        if day.time() == time(0,0):
            date_str = datetime.strftime(day, '%b %d %Y')
        else:
            date_str = datetime.strftime(day, '%b %d %Y %H:%M:%S')
        text.append("{0:>5s} {1:<12s}".format('Date', date_str))
        if open:
            text.append("{0:>5s} {1:.2f}".format('Open', open))
        if close:
            text.append("{0:>5s} {1:.2f}".format('Close', close))
        if high:
            text.append("{0:>5s} {1:.2f}".format('High', high))
        if low:
            text.append("{0:>5s} {1:.2f}".format('Low', low))
        if vol:
            text.append("{0:>5s} {1:.2f}M".format('Vol', (float(vol)/1000000)))
        self.txt.set_text('\n'.join(text))