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60 lines
1.6 KiB
Markdown
60 lines
1.6 KiB
Markdown
# 自定义Boxstyle01
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```python
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from matplotlib.path import Path
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def custom_box_style(x0, y0, width, height, mutation_size, mutation_aspect=1):
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"""
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Given the location and size of the box, return the path of
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the box around it.
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- *x0*, *y0*, *width*, *height* : location and size of the box
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- *mutation_size* : a reference scale for the mutation.
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- *aspect_ratio* : aspect-ration for the mutation.
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"""
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# note that we are ignoring mutation_aspect. This is okay in general.
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# padding
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mypad = 0.3
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pad = mutation_size * mypad
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# width and height with padding added.
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width = width + 2 * pad
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height = height + 2 * pad
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# boundary of the padded box
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x0, y0 = x0 - pad, y0 - pad
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x1, y1 = x0 + width, y0 + height
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cp = [(x0, y0),
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(x1, y0), (x1, y1), (x0, y1),
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(x0-pad, (y0+y1)/2.), (x0, y0),
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(x0, y0)]
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com = [Path.MOVETO,
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Path.LINETO, Path.LINETO, Path.LINETO,
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Path.LINETO, Path.LINETO,
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Path.CLOSEPOLY]
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path = Path(cp, com)
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return path
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import matplotlib.pyplot as plt
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fig, ax = plt.subplots(figsize=(3, 3))
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ax.text(0.5, 0.5, "Test", size=30, va="center", ha="center",
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bbox=dict(boxstyle=custom_box_style, alpha=0.2))
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plt.show()
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```
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## 下载这个示例
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- [下载python源码: custom_boxstyle01.py](https://matplotlib.org/_downloads/custom_boxstyle01.py)
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- [下载Jupyter notebook: custom_boxstyle01.ipynb](https://matplotlib.org/_downloads/custom_boxstyle01.ipynb) |