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<div class="section" id="module-matplotlib.afm">
<span id="matplotlib-afm"></span><h1><code class="docutils literal notranslate"><span class="pre">matplotlib.afm</span></code><a class="headerlink" href="#module-matplotlib.afm" title="Permalink to this headline">¶</a></h1>
<p>A python interface to Adobe Font Metrics Files.</p>
<p>Although a number of other python implementations exist, and may be more
complete than this, it was decided not to go with them because they were
either:</p>
<ol class="arabic simple">
<li>copyrighted or used a non-BSD compatible license</li>
<li>had too many dependencies and a free standing lib was needed</li>
<li>did more than needed and it was easier to write afresh rather than
figure out how to get just what was needed.</li>
</ol>
<p>It is pretty easy to use, and has no external dependencies:</p>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">import</span> <span class="nn">matplotlib</span> <span class="k">as</span> <span class="nn">mpl</span>
<span class="gp">>>> </span><span class="kn">from</span> <span class="nn">pathlib</span> <span class="kn">import</span> <span class="n">Path</span>
<span class="gp">>>> </span><span class="n">afm_path</span> <span class="o">=</span> <span class="n">Path</span><span class="p">(</span><span class="n">mpl</span><span class="o">.</span><span class="n">get_data_path</span><span class="p">(),</span> <span class="s1">'fonts'</span><span class="p">,</span> <span class="s1">'afm'</span><span class="p">,</span> <span class="s1">'ptmr8a.afm'</span><span class="p">)</span>
<span class="go">>>></span>
<span class="gp">>>> </span><span class="kn">from</span> <span class="nn">matplotlib.afm</span> <span class="kn">import</span> <span class="n">AFM</span>
<span class="gp">>>> </span><span class="k">with</span> <span class="n">afm_path</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">'rb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">fh</span><span class="p">:</span>
<span class="gp">... </span> <span class="n">afm</span> <span class="o">=</span> <span class="n">AFM</span><span class="p">(</span><span class="n">fh</span><span class="p">)</span>
<span class="gp">>>> </span><span class="n">afm</span><span class="o">.</span><span class="n">string_width_height</span><span class="p">(</span><span class="s1">'What the heck?'</span><span class="p">)</span>
<span class="go">(6220.0, 694)</span>
<span class="gp">>>> </span><span class="n">afm</span><span class="o">.</span><span class="n">get_fontname</span><span class="p">()</span>
<span class="go">'Times-Roman'</span>
<span class="gp">>>> </span><span class="n">afm</span><span class="o">.</span><span class="n">get_kern_dist</span><span class="p">(</span><span class="s1">'A'</span><span class="p">,</span> <span class="s1">'f'</span><span class="p">)</span>
<span class="go">0</span>
<span class="gp">>>> </span><span class="n">afm</span><span class="o">.</span><span class="n">get_kern_dist</span><span class="p">(</span><span class="s1">'A'</span><span class="p">,</span> <span class="s1">'y'</span><span class="p">)</span>
<span class="go">-92.0</span>
<span class="gp">>>> </span><span class="n">afm</span><span class="o">.</span><span class="n">get_bbox_char</span><span class="p">(</span><span class="s1">'!'</span><span class="p">)</span>
<span class="go">[130, -9, 238, 676]</span>
</pre></div>
</div>
<p>As in the Adobe Font Metrics File Format Specification, all dimensions
are given in units of 1/1000 of the scale factor (point size) of the font
being used.</p>
<dl class="py class">
<dt id="matplotlib.afm.AFM">
<em class="property">class </em><code class="descclassname">matplotlib.afm.</code><code class="descname">AFM</code><span class="sig-paren">(</span><em><span class="n">fh</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/functions.html#object" title="(in Python v3.9)"><code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code></a></p>
<p>Parse the AFM file in file object <em>fh</em>.</p>
<dl class="py method">
<dt id="matplotlib.afm.AFM.family_name">
<em class="property">property </em><code class="descname">family_name</code><a class="headerlink" href="#matplotlib.afm.AFM.family_name" title="Permalink to this definition">¶</a></dt>
<dd><p>The font family name, e.g., 'Times'.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_angle">
<code class="descname">get_angle</code><span class="sig-paren">(</span><em><span class="n">self</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_angle"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_angle" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the fontangle as float.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_bbox_char">
<code class="descname">get_bbox_char</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">c</span></em>, <em><span class="n">isord</span><span class="o">=</span><span class="default_value">False</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_bbox_char"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_bbox_char" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_capheight">
<code class="descname">get_capheight</code><span class="sig-paren">(</span><em><span class="n">self</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_capheight"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_capheight" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the cap height as float.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_familyname">
<code class="descname">get_familyname</code><span class="sig-paren">(</span><em><span class="n">self</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_familyname"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_familyname" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the font family name, e.g., 'Times'.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_fontname">
<code class="descname">get_fontname</code><span class="sig-paren">(</span><em><span class="n">self</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_fontname"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_fontname" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the font name, e.g., 'Times-Roman'.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_fullname">
<code class="descname">get_fullname</code><span class="sig-paren">(</span><em><span class="n">self</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_fullname"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_fullname" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the font full name, e.g., 'Times-Roman'.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_height_char">
<code class="descname">get_height_char</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">c</span></em>, <em><span class="n">isord</span><span class="o">=</span><span class="default_value">False</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_height_char"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_height_char" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the bounding box (ink) height of character <em>c</em> (space is 0).</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_horizontal_stem_width">
<code class="descname">get_horizontal_stem_width</code><span class="sig-paren">(</span><em><span class="n">self</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_horizontal_stem_width"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_horizontal_stem_width" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the standard horizontal stem width as float, or <em>None</em> if
not specified in AFM file.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_kern_dist">
<code class="descname">get_kern_dist</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">c1</span></em>, <em><span class="n">c2</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_kern_dist"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_kern_dist" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the kerning pair distance (possibly 0) for chars <em>c1</em> and <em>c2</em>.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_kern_dist_from_name">
<code class="descname">get_kern_dist_from_name</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">name1</span></em>, <em><span class="n">name2</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_kern_dist_from_name"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_kern_dist_from_name" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the kerning pair distance (possibly 0) for chars
<em>name1</em> and <em>name2</em>.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_name_char">
<code class="descname">get_name_char</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">c</span></em>, <em><span class="n">isord</span><span class="o">=</span><span class="default_value">False</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_name_char"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_name_char" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the name of the character, i.e., ';' is 'semicolon'.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_str_bbox">
<code class="descname">get_str_bbox</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">s</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_str_bbox"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_str_bbox" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the string bounding box.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_str_bbox_and_descent">
<code class="descname">get_str_bbox_and_descent</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">s</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_str_bbox_and_descent"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_str_bbox_and_descent" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the string bounding box and the maximal descent.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_underline_thickness">
<code class="descname">get_underline_thickness</code><span class="sig-paren">(</span><em><span class="n">self</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_underline_thickness"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_underline_thickness" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the underline thickness as float.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_vertical_stem_width">
<code class="descname">get_vertical_stem_width</code><span class="sig-paren">(</span><em><span class="n">self</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_vertical_stem_width"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_vertical_stem_width" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the standard vertical stem width as float, or <em>None</em> if
not specified in AFM file.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_weight">
<code class="descname">get_weight</code><span class="sig-paren">(</span><em><span class="n">self</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_weight"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_weight" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the font weight, e.g., 'Bold' or 'Roman'.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_width_char">
<code class="descname">get_width_char</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">c</span></em>, <em><span class="n">isord</span><span class="o">=</span><span class="default_value">False</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_width_char"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_width_char" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the width of the character from the character metric WX field.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_width_from_char_name">
<code class="descname">get_width_from_char_name</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">name</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_width_from_char_name"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_width_from_char_name" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the width of the character from a type1 character name.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.get_xheight">
<code class="descname">get_xheight</code><span class="sig-paren">(</span><em><span class="n">self</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.get_xheight"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.get_xheight" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the xheight as float.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.postscript_name">
<em class="property">property </em><code class="descname">postscript_name</code><a class="headerlink" href="#matplotlib.afm.AFM.postscript_name" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.afm.AFM.string_width_height">
<code class="descname">string_width_height</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">s</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/afm.html#AFM.string_width_height"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.afm.AFM.string_width_height" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the string width (including kerning) and string height
as a (<em>w</em>, <em>h</em>) tuple.</p>
</dd></dl>
</dd></dl>
<dl class="py class">
<dt id="matplotlib.afm.CharMetrics">
<em class="property">class </em><code class="descclassname">matplotlib.afm.</code><code class="descname">CharMetrics</code><span class="sig-paren">(</span><em><span class="n">width</span></em>, <em><span class="n">name</span></em>, <em><span class="n">bbox</span></em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.afm.CharMetrics" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#tuple" title="(in Python v3.9)"><code class="xref py py-class docutils literal notranslate"><span class="pre">tuple</span></code></a></p>
<p>Represents the character metrics of a single character.</p>
<p class="rubric">Notes</p>
<p>The fields do currently only describe a subset of character metrics
information defined in the AFM standard.</p>
<p>Create new instance of CharMetrics(width, name, bbox)</p>
<dl class="py attribute">
<dt id="matplotlib.afm.CharMetrics.bbox">
<code class="descname">bbox</code><a class="headerlink" href="#matplotlib.afm.CharMetrics.bbox" title="Permalink to this definition">¶</a></dt>
<dd><p>The bbox of the character (B) as a tuple (<em>llx</em>, <em>lly</em>, <em>urx</em>, <em>ury</em>).</p>
</dd></dl>
<dl class="py attribute">
<dt id="matplotlib.afm.CharMetrics.name">
<code class="descname">name</code><a class="headerlink" href="#matplotlib.afm.CharMetrics.name" title="Permalink to this definition">¶</a></dt>
<dd><p>The character name (N).</p>
</dd></dl>
<dl class="py attribute">
<dt id="matplotlib.afm.CharMetrics.width">
<code class="descname">width</code><a class="headerlink" href="#matplotlib.afm.CharMetrics.width" title="Permalink to this definition">¶</a></dt>
<dd><p>The character width (WX).</p>
</dd></dl>
</dd></dl>
<dl class="py class">
<dt id="matplotlib.afm.CompositePart">
<em class="property">class </em><code class="descclassname">matplotlib.afm.</code><code class="descname">CompositePart</code><span class="sig-paren">(</span><em><span class="n">name</span></em>, <em><span class="n">dx</span></em>, <em><span class="n">dy</span></em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.afm.CompositePart" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#tuple" title="(in Python v3.9)"><code class="xref py py-class docutils literal notranslate"><span class="pre">tuple</span></code></a></p>
<p>Represents the information on a composite element of a composite char.</p>
<p>Create new instance of CompositePart(name, dx, dy)</p>
<dl class="py attribute">
<dt id="matplotlib.afm.CompositePart.dx">
<code class="descname">dx</code><a class="headerlink" href="#matplotlib.afm.CompositePart.dx" title="Permalink to this definition">¶</a></dt>
<dd><p>x-displacement of the part from the origin.</p>
</dd></dl>
<dl class="py attribute">
<dt id="matplotlib.afm.CompositePart.dy">
<code class="descname">dy</code><a class="headerlink" href="#matplotlib.afm.CompositePart.dy" title="Permalink to this definition">¶</a></dt>
<dd><p>y-displacement of the part from the origin.</p>
</dd></dl>
<dl class="py attribute">
<dt id="matplotlib.afm.CompositePart.name">
<code class="descname">name</code><a class="headerlink" href="#matplotlib.afm.CompositePart.name" title="Permalink to this definition">¶</a></dt>
<dd><p>Name of the part, e.g. 'acute'.</p>
</dd></dl>
</dd></dl>
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