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<div id="unreleased-message"> You are reading an old version of the documentation (v3.4.0). For the latest version see <a href="https://matplotlib.org/stable/api/backend_cairo_api.html">https://matplotlib.org/stable/api/backend_cairo_api.html</a></div>
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<li><a class="reference internal" href="#a-cairo-backend-for-matplotlib">A Cairo backend for matplotlib</a></li>
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<div class="section" id="module-matplotlib.backends.backend_cairo">
<span id="matplotlib-backends-backend-cairo"></span><h1><a class="reference internal" href="#module-matplotlib.backends.backend_cairo" title="matplotlib.backends.backend_cairo"><code class="xref py py-mod docutils literal notranslate"><span class="pre">matplotlib.backends.backend_cairo</span></code></a><a class="headerlink" href="#module-matplotlib.backends.backend_cairo" title="Permalink to this headline">¶</a></h1>
<div class="section" id="a-cairo-backend-for-matplotlib">
<h2>A Cairo backend for matplotlib<a class="headerlink" href="#a-cairo-backend-for-matplotlib" title="Permalink to this headline">¶</a></h2>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Author:</th><td class="field-body">Steve Chaplin and others</td>
</tr>
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</table>
<p>This backend depends on cairocffi or pycairo.</p>
<dl class="py attribute">
<dt id="matplotlib.backends.backend_cairo.FigureCanvas">
<code class="descclassname">matplotlib.backends.backend_cairo.</code><code class="descname">FigureCanvas</code><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvas" title="Permalink to this definition">¶</a></dt>
<dd><p>alias of <a class="reference internal" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo" title="matplotlib.backends.backend_cairo.FigureCanvasCairo"><code class="xref py py-class docutils literal notranslate"><span class="pre">matplotlib.backends.backend_cairo.FigureCanvasCairo</span></code></a></p>
</dd></dl>
<dl class="py class">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo">
<em class="property">class </em><code class="descclassname">matplotlib.backends.backend_cairo.</code><code class="descname">FigureCanvasCairo</code><span class="sig-paren">(</span><em><span class="n">figure</span><span class="o">=</span><span class="default_value">None</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#FigureCanvasCairo"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.FigureCanvasBase" title="matplotlib.backend_bases.FigureCanvasBase"><code class="xref py py-class docutils literal notranslate"><span class="pre">matplotlib.backend_bases.FigureCanvasBase</span></code></a></p>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.copy_from_bbox">
<code class="descname">copy_from_bbox</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">bbox</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#FigureCanvasCairo.copy_from_bbox"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo.copy_from_bbox" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_pdf">
<code class="descname">print_pdf</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">fobj</span></em>, <em><span class="o">*</span><span class="n">args</span></em>, <em><span class="o">**</span><span class="n">kwargs</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#FigureCanvasCairo.print_pdf"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo.print_pdf" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_png">
<code class="descname">print_png</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">fobj</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#FigureCanvasCairo.print_png"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo.print_png" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_ps">
<code class="descname">print_ps</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">fobj</span></em>, <em><span class="o">*</span><span class="n">args</span></em>, <em><span class="o">**</span><span class="n">kwargs</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#FigureCanvasCairo.print_ps"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo.print_ps" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_raw">
<code class="descname">print_raw</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">fobj</span></em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo.print_raw" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_rgba">
<code class="descname">print_rgba</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">fobj</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#FigureCanvasCairo.print_rgba"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo.print_rgba" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_svg">
<code class="descname">print_svg</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">fobj</span></em>, <em><span class="o">*</span><span class="n">args</span></em>, <em><span class="o">**</span><span class="n">kwargs</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#FigureCanvasCairo.print_svg"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo.print_svg" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_svgz">
<code class="descname">print_svgz</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">fobj</span></em>, <em><span class="o">*</span><span class="n">args</span></em>, <em><span class="o">**</span><span class="n">kwargs</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#FigureCanvasCairo.print_svgz"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo.print_svgz" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.restore_region">
<code class="descname">restore_region</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">region</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#FigureCanvasCairo.restore_region"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo.restore_region" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="py class">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo">
<em class="property">class </em><code class="descclassname">matplotlib.backends.backend_cairo.</code><code class="descname">GraphicsContextCairo</code><span class="sig-paren">(</span><em><span class="n">renderer</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#GraphicsContextCairo"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.GraphicsContextCairo" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.GraphicsContextBase" title="matplotlib.backend_bases.GraphicsContextBase"><code class="xref py py-class docutils literal notranslate"><span class="pre">matplotlib.backend_bases.GraphicsContextBase</span></code></a></p>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.get_rgb">
<code class="descname">get_rgb</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/backends/backend_cairo.html#GraphicsContextCairo.get_rgb"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.GraphicsContextCairo.get_rgb" title="Permalink to this definition">¶</a></dt>
<dd><p>Return a tuple of three or four floats from 0-1.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.restore">
<code class="descname">restore</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/backends/backend_cairo.html#GraphicsContextCairo.restore"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.GraphicsContextCairo.restore" title="Permalink to this definition">¶</a></dt>
<dd><p>Restore the graphics context from the stack - needed only
for backends that save graphics contexts on a stack.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_alpha">
<code class="descname">set_alpha</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">alpha</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#GraphicsContextCairo.set_alpha"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.GraphicsContextCairo.set_alpha" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the alpha value used for blending - not supported on all backends.</p>
<p>If <code class="docutils literal notranslate"><span class="pre">alpha=None</span></code> (the default), the alpha components of the
foreground and fill colors will be used to set their respective
transparencies (where applicable); otherwise, <code class="docutils literal notranslate"><span class="pre">alpha</span></code> will override
them.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_capstyle">
<code class="descname">set_capstyle</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">cs</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#GraphicsContextCairo.set_capstyle"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.GraphicsContextCairo.set_capstyle" title="Permalink to this definition">¶</a></dt>
<dd><p>Set how to draw endpoints of lines.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><dl class="first last docutils">
<dt><strong>cs</strong><span class="classifier"><a class="reference internal" href="_enums_api.html#matplotlib._enums.CapStyle" title="matplotlib._enums.CapStyle"><code class="xref py py-obj docutils literal notranslate"><span class="pre">CapStyle</span></code></a> or {'butt', 'projecting', 'round'}</span></dt><dd></dd>
</dl>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_clip_path">
<code class="descname">set_clip_path</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">path</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#GraphicsContextCairo.set_clip_path"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.GraphicsContextCairo.set_clip_path" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the clip path to a <a class="reference internal" href="transformations.html#matplotlib.transforms.TransformedPath" title="matplotlib.transforms.TransformedPath"><code class="xref py py-obj docutils literal notranslate"><span class="pre">TransformedPath</span></code></a> or None.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_clip_rectangle">
<code class="descname">set_clip_rectangle</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">rectangle</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#GraphicsContextCairo.set_clip_rectangle"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.GraphicsContextCairo.set_clip_rectangle" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the clip rectangle to a <a class="reference internal" href="transformations.html#matplotlib.transforms.Bbox" title="matplotlib.transforms.Bbox"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Bbox</span></code></a> or None.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_dashes">
<code class="descname">set_dashes</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">offset</span></em>, <em><span class="n">dashes</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#GraphicsContextCairo.set_dashes"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.GraphicsContextCairo.set_dashes" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the dash style for the gc.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><dl class="first last docutils">
<dt><strong>dash_offset</strong><span class="classifier">float or None</span></dt><dd><p>The offset (usually 0).</p>
</dd>
<dt><strong>dash_list</strong><span class="classifier">array-like or None</span></dt><dd><p>The on-off sequence as points.</p>
</dd>
</dl>
</td>
</tr>
</tbody>
</table>
<p class="rubric">Notes</p>
<p><code class="docutils literal notranslate"><span class="pre">(None,</span> <span class="pre">None)</span></code> specifies a solid line.</p>
<p>See p. 107 of to PostScript <a class="reference external" href="https://www-cdf.fnal.gov/offline/PostScript/BLUEBOOK.PDF">blue book</a> for more info.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_foreground">
<code class="descname">set_foreground</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">fg</span></em>, <em><span class="n">isRGBA</span><span class="o">=</span><span class="default_value">None</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#GraphicsContextCairo.set_foreground"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.GraphicsContextCairo.set_foreground" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the foreground color.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><dl class="first last docutils">
<dt><strong>fg</strong><span class="classifier">color</span></dt><dd></dd>
<dt><strong>isRGBA</strong><span class="classifier">bool</span></dt><dd><p>If <em>fg</em> is known to be an <code class="docutils literal notranslate"><span class="pre">(r,</span> <span class="pre">g,</span> <span class="pre">b,</span> <span class="pre">a)</span></code> tuple, <em>isRGBA</em> can be
set to True to improve performance.</p>
</dd>
</dl>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_joinstyle">
<code class="descname">set_joinstyle</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">js</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#GraphicsContextCairo.set_joinstyle"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.GraphicsContextCairo.set_joinstyle" title="Permalink to this definition">¶</a></dt>
<dd><p>Set how to draw connections between line segments.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><dl class="first last docutils">
<dt><strong>js</strong><span class="classifier"><a class="reference internal" href="_enums_api.html#matplotlib._enums.JoinStyle" title="matplotlib._enums.JoinStyle"><code class="xref py py-obj docutils literal notranslate"><span class="pre">JoinStyle</span></code></a> or {'miter', 'round', 'bevel'}</span></dt><dd></dd>
</dl>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_linewidth">
<code class="descname">set_linewidth</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">w</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#GraphicsContextCairo.set_linewidth"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.GraphicsContextCairo.set_linewidth" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the linewidth in points.</p>
</dd></dl>
</dd></dl>
<dl class="py class">
<dt id="matplotlib.backends.backend_cairo.RendererCairo">
<em class="property">class </em><code class="descclassname">matplotlib.backends.backend_cairo.</code><code class="descname">RendererCairo</code><span class="sig-paren">(</span><em><span class="n">dpi</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#RendererCairo"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.RendererBase" title="matplotlib.backend_bases.RendererBase"><code class="xref py py-class docutils literal notranslate"><span class="pre">matplotlib.backend_bases.RendererBase</span></code></a></p>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.draw_image">
<code class="descname">draw_image</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">gc</span></em>, <em><span class="n">x</span></em>, <em><span class="n">y</span></em>, <em><span class="n">im</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#RendererCairo.draw_image"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.draw_image" title="Permalink to this definition">¶</a></dt>
<dd><p>Draw an RGBA image.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><dl class="first last docutils">
<dt><strong>gc</strong><span class="classifier"><a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.GraphicsContextBase" title="matplotlib.backend_bases.GraphicsContextBase"><code class="xref py py-obj docutils literal notranslate"><span class="pre">GraphicsContextBase</span></code></a></span></dt><dd><p>A graphics context with clipping information.</p>
</dd>
<dt><strong>x</strong><span class="classifier">scalar</span></dt><dd><p>The distance in physical units (i.e., dots or pixels) from the left
hand side of the canvas.</p>
</dd>
<dt><strong>y</strong><span class="classifier">scalar</span></dt><dd><p>The distance in physical units (i.e., dots or pixels) from the
bottom side of the canvas.</p>
</dd>
<dt><strong>im</strong><span class="classifier">(N, M, 4) array-like of np.uint8</span></dt><dd><p>An array of RGBA pixels.</p>
</dd>
<dt><strong>transform</strong><span class="classifier"><a class="reference internal" href="transformations.html#matplotlib.transforms.Affine2DBase" title="matplotlib.transforms.Affine2DBase"><code class="xref py py-obj docutils literal notranslate"><span class="pre">matplotlib.transforms.Affine2DBase</span></code></a></span></dt><dd><p>If and only if the concrete backend is written such that
<code class="xref py py-meth docutils literal notranslate"><span class="pre">option_scale_image()</span></code> returns <code class="docutils literal notranslate"><span class="pre">True</span></code>, an affine
transformation (i.e., an <a class="reference internal" href="transformations.html#matplotlib.transforms.Affine2DBase" title="matplotlib.transforms.Affine2DBase"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Affine2DBase</span></code></a>) <em>may</em> be passed to
<a class="reference internal" href="#matplotlib.backends.backend_cairo.RendererCairo.draw_image" title="matplotlib.backends.backend_cairo.RendererCairo.draw_image"><code class="xref py py-meth docutils literal notranslate"><span class="pre">draw_image()</span></code></a>. The translation vector of the transformation
is given in physical units (i.e., dots or pixels). Note that
the transformation does not override <em>x</em> and <em>y</em>, and has to be
applied <em>before</em> translating the result by <em>x</em> and <em>y</em> (this can
be accomplished by adding <em>x</em> and <em>y</em> to the translation vector
defined by <em>transform</em>).</p>
</dd>
</dl>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.draw_markers">
<code class="descname">draw_markers</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">gc</span></em>, <em><span class="n">marker_path</span></em>, <em><span class="n">marker_trans</span></em>, <em><span class="n">path</span></em>, <em><span class="n">transform</span></em>, <em><span class="n">rgbFace</span><span class="o">=</span><span class="default_value">None</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#RendererCairo.draw_markers"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.draw_markers" title="Permalink to this definition">¶</a></dt>
<dd><p>Draw a marker at each of <em>path</em>'s vertices (excluding control points).</p>
<p>This provides a fallback implementation of draw_markers that
makes multiple calls to <a class="reference internal" href="#matplotlib.backends.backend_cairo.RendererCairo.draw_path" title="matplotlib.backends.backend_cairo.RendererCairo.draw_path"><code class="xref py py-meth docutils literal notranslate"><span class="pre">draw_path()</span></code></a>. Some backends may
want to override this method in order to draw the marker only
once and reuse it multiple times.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><dl class="first last docutils">
<dt><strong>gc</strong><span class="classifier"><a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.GraphicsContextBase" title="matplotlib.backend_bases.GraphicsContextBase"><code class="xref py py-obj docutils literal notranslate"><span class="pre">GraphicsContextBase</span></code></a></span></dt><dd><p>The graphics context.</p>
</dd>
<dt><strong>marker_trans</strong><span class="classifier"><a class="reference internal" href="transformations.html#matplotlib.transforms.Transform" title="matplotlib.transforms.Transform"><code class="xref py py-obj docutils literal notranslate"><span class="pre">matplotlib.transforms.Transform</span></code></a></span></dt><dd><p>An affine transform applied to the marker.</p>
</dd>
<dt><strong>trans</strong><span class="classifier"><a class="reference internal" href="transformations.html#matplotlib.transforms.Transform" title="matplotlib.transforms.Transform"><code class="xref py py-obj docutils literal notranslate"><span class="pre">matplotlib.transforms.Transform</span></code></a></span></dt><dd><p>An affine transform applied to the path.</p>
</dd>
</dl>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.draw_path">
<code class="descname">draw_path</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">gc</span></em>, <em><span class="n">path</span></em>, <em><span class="n">transform</span></em>, <em><span class="n">rgbFace</span><span class="o">=</span><span class="default_value">None</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#RendererCairo.draw_path"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.draw_path" title="Permalink to this definition">¶</a></dt>
<dd><p>Draw a <a class="reference internal" href="path_api.html#matplotlib.path.Path" title="matplotlib.path.Path"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Path</span></code></a> instance using the given affine transform.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.draw_text">
<code class="descname">draw_text</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">gc</span></em>, <em><span class="n">x</span></em>, <em><span class="n">y</span></em>, <em><span class="n">s</span></em>, <em><span class="n">prop</span></em>, <em><span class="n">angle</span></em>, <em><span class="n">ismath</span><span class="o">=</span><span class="default_value">False</span></em>, <em><span class="n">mtext</span><span class="o">=</span><span class="default_value">None</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#RendererCairo.draw_text"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.draw_text" title="Permalink to this definition">¶</a></dt>
<dd><p>Draw the text instance.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><dl class="first last docutils">
<dt><strong>gc</strong><span class="classifier"><a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.GraphicsContextBase" title="matplotlib.backend_bases.GraphicsContextBase"><code class="xref py py-obj docutils literal notranslate"><span class="pre">GraphicsContextBase</span></code></a></span></dt><dd><p>The graphics context.</p>
</dd>
<dt><strong>x</strong><span class="classifier">float</span></dt><dd><p>The x location of the text in display coords.</p>
</dd>
<dt><strong>y</strong><span class="classifier">float</span></dt><dd><p>The y location of the text baseline in display coords.</p>
</dd>
<dt><strong>s</strong><span class="classifier">str</span></dt><dd><p>The text string.</p>
</dd>
<dt><strong>prop</strong><span class="classifier"><a class="reference internal" href="font_manager_api.html#matplotlib.font_manager.FontProperties" title="matplotlib.font_manager.FontProperties"><code class="xref py py-obj docutils literal notranslate"><span class="pre">matplotlib.font_manager.FontProperties</span></code></a></span></dt><dd><p>The font properties.</p>
</dd>
<dt><strong>angle</strong><span class="classifier">float</span></dt><dd><p>The rotation angle in degrees anti-clockwise.</p>
</dd>
<dt><strong>mtext</strong><span class="classifier"><a class="reference internal" href="text_api.html#matplotlib.text.Text" title="matplotlib.text.Text"><code class="xref py py-obj docutils literal notranslate"><span class="pre">matplotlib.text.Text</span></code></a></span></dt><dd><p>The original text object to be rendered.</p>
</dd>
</dl>
</td>
</tr>
</tbody>
</table>
<p class="rubric">Notes</p>
<p><strong>Note for backend implementers:</strong></p>
<p>When you are trying to determine if you have gotten your bounding box
right (which is what enables the text layout/alignment to work
properly), it helps to change the line in text.py:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="mi">0</span><span class="p">:</span> <span class="n">bbox_artist</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">renderer</span><span class="p">)</span>
</pre></div>
</div>
<p>to if 1, and then the actual bounding box will be plotted along with
your text.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.fontangles">
<em class="property">property </em><code class="descname">fontangles</code><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.fontangles" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.fontweights">
<em class="property">property </em><code class="descname">fontweights</code><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.fontweights" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.get_canvas_width_height">
<code class="descname">get_canvas_width_height</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/backends/backend_cairo.html#RendererCairo.get_canvas_width_height"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.get_canvas_width_height" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the canvas width and height in display coords.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.get_text_width_height_descent">
<code class="descname">get_text_width_height_descent</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">s</span></em>, <em><span class="n">prop</span></em>, <em><span class="n">ismath</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#RendererCairo.get_text_width_height_descent"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.get_text_width_height_descent" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the width, height, and descent (offset from the bottom
to the baseline), in display coords, of the string <em>s</em> with
<a class="reference internal" href="font_manager_api.html#matplotlib.font_manager.FontProperties" title="matplotlib.font_manager.FontProperties"><code class="xref py py-obj docutils literal notranslate"><span class="pre">FontProperties</span></code></a> <em>prop</em>.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.mathtext_parser">
<em class="property">property </em><code class="descname">mathtext_parser</code><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.mathtext_parser" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.new_gc">
<code class="descname">new_gc</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/backends/backend_cairo.html#RendererCairo.new_gc"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.new_gc" title="Permalink to this definition">¶</a></dt>
<dd><p>Return an instance of a <a class="reference internal" href="backend_bases_api.html#matplotlib.backend_bases.GraphicsContextBase" title="matplotlib.backend_bases.GraphicsContextBase"><code class="xref py py-obj docutils literal notranslate"><span class="pre">GraphicsContextBase</span></code></a>.</p>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.points_to_pixels">
<code class="descname">points_to_pixels</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">points</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#RendererCairo.points_to_pixels"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.points_to_pixels" title="Permalink to this definition">¶</a></dt>
<dd><p>Convert points to display units.</p>
<p>You need to override this function (unless your backend
doesn't have a dpi, e.g., postscript or svg). Some imaging
systems assume some value for pixels per inch:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">points</span> <span class="n">to</span> <span class="n">pixels</span> <span class="o">=</span> <span class="n">points</span> <span class="o">*</span> <span class="n">pixels_per_inch</span><span class="o">/</span><span class="mi">72</span> <span class="o">*</span> <span class="n">dpi</span><span class="o">/</span><span class="mi">72</span>
</pre></div>
</div>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><dl class="first docutils">
<dt><strong>points</strong><span class="classifier">float or array-like</span></dt><dd><p>a float or a numpy array of float</p>
</dd>
</dl>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><dl class="first last docutils">
<dt>Points converted to pixels</dt><dd></dd>
</dl>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.set_ctx_from_surface">
<code class="descname">set_ctx_from_surface</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">surface</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#RendererCairo.set_ctx_from_surface"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.set_ctx_from_surface" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.set_width_height">
<code class="descname">set_width_height</code><span class="sig-paren">(</span><em><span class="n">self</span></em>, <em><span class="n">width</span></em>, <em><span class="n">height</span></em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#RendererCairo.set_width_height"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.set_width_height" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
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