注解
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图形轴输入离开¶
通过在Enter和Leave上更改帧颜色来说明图形和轴的Enter和Leave事件。
import matplotlib.pyplot as plt
def on_enter_axes(event):
print('enter_axes', event.inaxes)
event.inaxes.patch.set_facecolor('yellow')
event.canvas.draw()
def on_leave_axes(event):
print('leave_axes', event.inaxes)
event.inaxes.patch.set_facecolor('white')
event.canvas.draw()
def on_enter_figure(event):
print('enter_figure', event.canvas.figure)
event.canvas.figure.patch.set_facecolor('red')
event.canvas.draw()
def on_leave_figure(event):
print('leave_figure', event.canvas.figure)
event.canvas.figure.patch.set_facecolor('grey')
event.canvas.draw()
fig1, (ax, ax2) = plt.subplots(2, 1)
fig1.suptitle('mouse hover over figure or axes to trigger events')
fig1.canvas.mpl_connect('figure_enter_event', on_enter_figure)
fig1.canvas.mpl_connect('figure_leave_event', on_leave_figure)
fig1.canvas.mpl_connect('axes_enter_event', on_enter_axes)
fig1.canvas.mpl_connect('axes_leave_event', on_leave_axes)
出:
8
fig2, (ax, ax2) = plt.subplots(2, 1)
fig2.suptitle('mouse hover over figure or axes to trigger events')
fig2.canvas.mpl_connect('figure_enter_event', on_enter_figure)
fig2.canvas.mpl_connect('figure_leave_event', on_leave_figure)
fig2.canvas.mpl_connect('axes_enter_event', on_enter_axes)
fig2.canvas.mpl_connect('axes_leave_event', on_leave_axes)
plt.show()
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