matplotlib & pandas

Python/matplotlab/gallery/misc/font_indexing.md

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+# 字体索引
+
+一个小示例，它展示了对字体表的各种索引是如何相互关联的。主要是为MPL开发商.。
+
+输出：
+
+```python
+(6, 0, 519, 576)
+36 57 65 86
+AV 0
+AV 0
+AV 0
+AV 0
+```
+
+```python
+import matplotlib
+from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, KERNING_UNFITTED, KERNING_UNSCALED
+
+
+fname = matplotlib.get_data_path() + '/fonts/ttf/DejaVuSans.ttf'
+font = FT2Font(fname)
+font.set_charmap(0)
+
+codes = font.get_charmap().items()
+#dsu = [(ccode, glyphind) for ccode, glyphind in codes]
+#dsu.sort()
+#for ccode, glyphind in dsu:
+#    try: name = font.get_glyph_name(glyphind)
+#    except RuntimeError: pass
+#    else: print('% 4d % 4d %s %s' % (glyphind, ccode, hex(int(ccode)), name))
+
+
+# make a charname to charcode and glyphind dictionary
+coded = {}
+glyphd = {}
+for ccode, glyphind in codes:
+    name = font.get_glyph_name(glyphind)
+    coded[name] = ccode
+    glyphd[name] = glyphind
+
+code = coded['A']
+glyph = font.load_char(code)
+print(glyph.bbox)
+print(glyphd['A'], glyphd['V'], coded['A'], coded['V'])
+print('AV', font.get_kerning(glyphd['A'], glyphd['V'], KERNING_DEFAULT))
+print('AV', font.get_kerning(glyphd['A'], glyphd['V'], KERNING_UNFITTED))
+print('AV', font.get_kerning(glyphd['A'], glyphd['V'], KERNING_UNSCALED))
+print('AV', font.get_kerning(glyphd['A'], glyphd['T'], KERNING_UNSCALED))
+```
+
+## 下载这个示例
+            
+- [下载python源码: font_indexing.py](https://matplotlib.org/_downloads/font_indexing.py)
+- [下载Jupyter notebook: font_indexing.ipynb](https://matplotlib.org/_downloads/font_indexing.ipynb)