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Commit b306a8e

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Merge pull request #17117 from anntzer/textbox
TextBox improvements.
2 parents 3297484 + b833a2b commit b306a8e
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‎examples/widgets/textbox.py

Copy file name to clipboardExpand all lines: examples/widgets/textbox.py
+11-7Lines changed: 11 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -16,12 +16,13 @@
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import numpy as np
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import matplotlib.pyplot as plt
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from matplotlib.widgets import TextBox
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fig, ax = plt.subplots()
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plt.subplots_adjust(bottom=0.2)
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fig.subplots_adjust(bottom=0.2)
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t = np.arange(-2.0, 2.0, 0.001)
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s = t ** 2
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initial_text = "t ** 2"
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l, = plt.plot(t, s, lw=2) # make a plot for the math expression "t ** 2"
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l, = ax.plot(t, np.zeros_like(t), lw=2)
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def submit(expression):
@@ -33,12 +34,15 @@ def submit(expression):
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"""
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ydata = eval(expression)
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l.set_ydata(ydata)
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ax.set_ylim(np.min(ydata), np.max(ydata))
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ax.relim()
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ax.autoscale_view()
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plt.draw()
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axbox = plt.axes([0.1, 0.05, 0.8, 0.075])
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text_box = TextBox(axbox, 'Evaluate', initial=initial_text)
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axbox = fig.add_axes([0.1, 0.05, 0.8, 0.075])
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text_box = TextBox(axbox, "Evaluate")
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text_box.on_submit(submit)
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text_box.set_val("t ** 2") # Trigger `submit` with the initial string.
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plt.show()
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‎lib/matplotlib/widgets.py

Copy file name to clipboardExpand all lines: lib/matplotlib/widgets.py
+6Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -761,6 +761,12 @@ def _rendercursor(self):
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# and save its dimensions, draw the real text, then put the cursor
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# at the saved dimensions
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# This causes a single extra draw if the figure has never been rendered
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# yet, which should be fine as we're going to repeatedly re-render the
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# figure later anyways.
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if self.ax.figure._cachedRenderer is None:
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self.ax.figure.canvas.draw()
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text = self.text_disp.get_text() # Save value before overwriting it.
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widthtext = text[:self.cursor_index]
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self.text_disp.set_text(widthtext or ",")

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