鼠标光标

此示例在图形画布上设置备用光标。

注意，这是一个交互式示例，必须运行才能看到效果。

import matplotlib.pyplot as plt
from matplotlib.backend_tools import Cursors


fig, axs = plt.subplots(len(Cursors), figsize=(6, len(Cursors) + 0.5),
                        gridspec_kw={'hspace': 0})
fig.suptitle('Hover over an Axes to see alternate Cursors')

for cursor, ax in zip(Cursors, axs):
    ax.cursor_to_use = cursor
    ax.text(0.5, 0.5, cursor.name,
            horizontalalignment='center', verticalalignment='center')
    ax.set(xticks=[], yticks=[])


def hover(event):
    if fig.canvas.widgetlock.locked():
        # Don't do anything if the zoom/pan tools have been enabled.
        return

    fig.canvas.set_cursor(
        event.inaxes.cursor_to_use if event.inaxes else Cursors.POINTER)


fig.canvas.mpl_connect('motion_notify_event', hover)

plt.show()

参考

此示例中显示了以下函数、方法、类和模块的使用：

• matplotlib.backend_bases.FigureCanvasBase.set_cursor