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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>
</tbody>
</table>
<p>This backend depends on <a class="reference external" href="http://cairographics.org">cairo</a>, and either on
cairocffi, or (Python 2 only) on pycairo.</p>
<dl class="class">
<dt id="matplotlib.backends.backend_cairo.ArrayWrapper">
<em class="property">class </em><code class="descclassname">matplotlib.backends.backend_cairo.</code><code class="descname">ArrayWrapper</code><span class="sig-paren">(</span><em>myarray</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#ArrayWrapper"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.ArrayWrapper" 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 v3.8)"><code class="xref py py-class docutils literal notranslate"><span class="pre">object</span></code></a></p>
<p>Thin wrapper around numpy ndarray to expose the interface
expected by cairocffi. Basically replicates the
array.array interface.</p>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.ArrayWrapper.buffer_info">
<code class="descname">buffer_info</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#ArrayWrapper.buffer_info"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.ArrayWrapper.buffer_info" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="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="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>figure</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="method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_pdf">
<code class="descname">print_pdf</code><span class="sig-paren">(</span><em>fobj</em>, <em>*args</em>, <em>**kwargs</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="method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_png">
<code class="descname">print_png</code><span class="sig-paren">(</span><em>fobj</em>, <em>*args</em>, <em>**kwargs</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="method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_ps">
<code class="descname">print_ps</code><span class="sig-paren">(</span><em>fobj</em>, <em>*args</em>, <em>**kwargs</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="method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_svg">
<code class="descname">print_svg</code><span class="sig-paren">(</span><em>fobj</em>, <em>*args</em>, <em>**kwargs</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="method">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.print_svgz">
<code class="descname">print_svgz</code><span class="sig-paren">(</span><em>fobj</em>, <em>*args</em>, <em>**kwargs</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="attribute">
<dt id="matplotlib.backends.backend_cairo.FigureCanvasCairo.supports_blit">
<code class="descname">supports_blit</code><em class="property"> = False</em><a class="headerlink" href="#matplotlib.backends.backend_cairo.FigureCanvasCairo.supports_blit" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="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>renderer</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="method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.get_rgb">
<code class="descname">get_rgb</code><span class="sig-paren">(</span><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>returns a tuple of three or four floats from 0-1.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.restore">
<code class="descname">restore</code><span class="sig-paren">(</span><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="method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_alpha">
<code class="descname">set_alpha</code><span class="sig-paren">(</span><em>alpha</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.
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="method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_capstyle">
<code class="descname">set_capstyle</code><span class="sig-paren">(</span><em>cs</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 the capstyle as a string in ('butt', 'round', 'projecting')</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_clip_path">
<code class="descname">set_clip_path</code><span class="sig-paren">(</span><em>path</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 and transformation. Path should be a
<a class="reference internal" href="transformations.html#matplotlib.transforms.TransformedPath" title="matplotlib.transforms.TransformedPath"><code class="xref py py-class docutils literal notranslate"><span class="pre">TransformedPath</span></code></a> instance.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_clip_rectangle">
<code class="descname">set_clip_rectangle</code><span class="sig-paren">(</span><em>rectangle</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 with sequence (left, bottom, width, height)</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_dashes">
<code class="descname">set_dashes</code><span class="sig-paren">(</span><em>offset</em>, <em>dashes</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-delimiter">:</span> <span class="classifier">float</span></dt>
<dd><p class="first last">is the offset (usually 0).</p>
</dd>
<dt><strong>dash_list</strong> <span class="classifier-delimiter">:</span> <span class="classifier">array_like</span></dt>
<dd><p class="first last">specifies the on-off sequence as points.
<code class="docutils literal notranslate"><span class="pre">(None,</span> <span class="pre">None)</span></code> specifies a solid line</p>
</dd>
</dl>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_foreground">
<code class="descname">set_foreground</code><span class="sig-paren">(</span><em>fg</em>, <em>isRGBA=None</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. fg can be a MATLAB format string, a
html hex color string, an rgb or rgba unit tuple, or a float between 0
and 1. In the latter case, grayscale is used.</p>
<p>If you know fg is rgba, set <code class="docutils literal notranslate"><span class="pre">isRGBA=True</span></code> for efficiency.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_joinstyle">
<code class="descname">set_joinstyle</code><span class="sig-paren">(</span><em>js</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 the join style to be one of ('miter', 'round', 'bevel')</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.GraphicsContextCairo.set_linewidth">
<code class="descname">set_linewidth</code><span class="sig-paren">(</span><em>w</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="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>dpi</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="staticmethod">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.convert_path">
<em class="property">static </em><code class="descname">convert_path</code><span class="sig-paren">(</span><em>ctx</em>, <em>path</em>, <em>transform</em>, <em>clip=None</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/matplotlib/backends/backend_cairo.html#RendererCairo.convert_path"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.convert_path" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.draw_image">
<code class="descname">draw_image</code><span class="sig-paren">(</span><em>gc</em>, <em>x</em>, <em>y</em>, <em>im</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-delimiter">:</span> <span class="classifier"><code class="xref py py-obj docutils literal notranslate"><span class="pre">GraphicsContextBase</span></code></span></dt>
<dd><p class="first last">a graphics context with clipping information.</p>
</dd>
<dt><strong>x</strong> <span class="classifier-delimiter">:</span> <span class="classifier">scalar</span></dt>
<dd><p class="first last">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-delimiter">:</span> <span class="classifier">scalar</span></dt>
<dd><p class="first last">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-delimiter">:</span> <span class="classifier">array_like, shape=(N, M, 4), dtype=np.uint8</span></dt>
<dd><p class="first last">An array of RGBA pixels.</p>
</dd>
<dt><strong>transform</strong> <span class="classifier-delimiter">:</span> <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 class="first last">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 <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>. It takes the
form of a <a class="reference internal" href="transformations.html#matplotlib.transforms.Affine2DBase" title="matplotlib.transforms.Affine2DBase"><code class="xref py py-class docutils literal notranslate"><span class="pre">Affine2DBase</span></code></a> instance.
The translation vector of the transformation is given in physical
units (i.e., dots or pixels). Note that the transformation does not
override <code class="xref py py-obj docutils literal notranslate"><span class="pre">x</span></code> and <code class="xref py py-obj docutils literal notranslate"><span class="pre">y</span></code>, and has to be applied <em>before</em> translating
the result by <code class="xref py py-obj docutils literal notranslate"><span class="pre">x</span></code> and <code class="xref py py-obj docutils literal notranslate"><span class="pre">y</span></code> (this can be accomplished by adding <code class="xref py py-obj docutils literal notranslate"><span class="pre">x</span></code>
and <code class="xref py py-obj docutils literal notranslate"><span class="pre">y</span></code> to the translation vector defined by <code class="xref py py-obj docutils literal notranslate"><span class="pre">transform</span></code>).</p>
</dd>
</dl>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.draw_markers">
<code class="descname">draw_markers</code><span class="sig-paren">(</span><em>gc</em>, <em>marker_path</em>, <em>marker_trans</em>, <em>path</em>, <em>transform</em>, <em>rgbFace=None</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>Draws a marker at each of the vertices in path. This includes
all vertices, including control points on curves. To avoid
that behavior, those vertices should be removed before calling
this function.</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-delimiter">:</span> <span class="classifier"><code class="xref py py-obj docutils literal notranslate"><span class="pre">GraphicsContextBase</span></code></span></dt>
<dd><p class="first last">The graphics context</p>
</dd>
<dt><strong>marker_trans</strong> <span class="classifier-delimiter">:</span> <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 class="first last">An affine transform applied to the marker.</p>
</dd>
<dt><strong>trans</strong> <span class="classifier-delimiter">:</span> <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 class="first last">An affine transform applied to the path.</p>
</dd>
</dl>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.draw_path">
<code class="descname">draw_path</code><span class="sig-paren">(</span><em>gc</em>, <em>path</em>, <em>transform</em>, <em>rgbFace=None</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>Draws a <a class="reference internal" href="path_api.html#matplotlib.path.Path" title="matplotlib.path.Path"><code class="xref py py-class docutils literal notranslate"><span class="pre">Path</span></code></a> instance using the
given affine transform.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.draw_text">
<code class="descname">draw_text</code><span class="sig-paren">(</span><em>gc</em>, <em>x</em>, <em>y</em>, <em>s</em>, <em>prop</em>, <em>angle</em>, <em>ismath=False</em>, <em>mtext=None</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-delimiter">:</span> <span class="classifier"><code class="xref py py-obj docutils literal notranslate"><span class="pre">GraphicsContextBase</span></code></span></dt>
<dd><p class="first last">the graphics context</p>
</dd>
<dt><strong>x</strong> <span class="classifier-delimiter">:</span> <span class="classifier">scalar</span></dt>
<dd><p class="first last">the x location of the text in display coords</p>
</dd>
<dt><strong>y</strong> <span class="classifier-delimiter">:</span> <span class="classifier">scalar</span></dt>
<dd><p class="first last">the y location of the text baseline in display coords</p>
</dd>
<dt><strong>s</strong> <span class="classifier-delimiter">:</span> <span class="classifier">str</span></dt>
<dd><p class="first last">the text string</p>
</dd>
<dt><strong>prop</strong> <span class="classifier-delimiter">:</span> <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 class="first last">font properties</p>
</dd>
<dt><strong>angle</strong> <span class="classifier-delimiter">:</span> <span class="classifier">scalar</span></dt>
<dd><p class="first last">the rotation angle in degrees</p>
</dd>
<dt><strong>mtext</strong> <span class="classifier-delimiter">:</span> <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 class="first last">the original text object to be rendered</p>
</dd>
</dl>
</td>
</tr>
</tbody>
</table>
<p class="rubric">Notes</p>
<p><strong>backend implementers note</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="attribute">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.fontangles">
<code class="descname">fontangles</code><em class="property"> = {'italic': <MyCairoCffi name='mock.FONT_SLANT_ITALIC' id='140562500490960'>, 'normal': <MyCairoCffi name='mock.FONT_SLANT_NORMAL' id='140562499978672'>, 'oblique': <MyCairoCffi name='mock.FONT_SLANT_OBLIQUE' id='140562499994768'>}</em><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.fontangles" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.fontweights">
<code class="descname">fontweights</code><em class="property"> = {100: <MyCairoCffi name='mock.FONT_WEIGHT_NORMAL' id='140562500462864'>, 200: <MyCairoCffi name='mock.FONT_WEIGHT_NORMAL' id='140562500462864'>, 300: <MyCairoCffi name='mock.FONT_WEIGHT_NORMAL' id='140562500462864'>, 400: <MyCairoCffi name='mock.FONT_WEIGHT_NORMAL' id='140562500462864'>, 500: <MyCairoCffi name='mock.FONT_WEIGHT_NORMAL' id='140562500462864'>, 600: <MyCairoCffi name='mock.FONT_WEIGHT_BOLD' id='140562500478960'>, 700: <MyCairoCffi name='mock.FONT_WEIGHT_BOLD' id='140562500478960'>, 800: <MyCairoCffi name='mock.FONT_WEIGHT_BOLD' id='140562500478960'>, 900: <MyCairoCffi name='mock.FONT_WEIGHT_BOLD' id='140562500478960'>, 'ultralight': <MyCairoCffi name='mock.FONT_WEIGHT_NORMAL' id='140562500462864'>, 'light': <MyCairoCffi name='mock.FONT_WEIGHT_NORMAL' id='140562500462864'>, 'normal': <MyCairoCffi name='mock.FONT_WEIGHT_NORMAL' id='140562500462864'>, 'medium': <MyCairoCffi name='mock.FONT_WEIGHT_NORMAL' id='140562500462864'>, 'regular': <MyCairoCffi name='mock.FONT_WEIGHT_NORMAL' id='140562500462864'>, 'semibold': <MyCairoCffi name='mock.FONT_WEIGHT_BOLD' id='140562500478960'>, 'bold': <MyCairoCffi name='mock.FONT_WEIGHT_BOLD' id='140562500478960'>, 'heavy': <MyCairoCffi name='mock.FONT_WEIGHT_BOLD' id='140562500478960'>, 'ultrabold': <MyCairoCffi name='mock.FONT_WEIGHT_BOLD' id='140562500478960'>, 'black': <MyCairoCffi name='mock.FONT_WEIGHT_BOLD' id='140562500478960'>}</em><a class="headerlink" href="#matplotlib.backends.backend_cairo.RendererCairo.fontweights" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="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><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="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>s</em>, <em>prop</em>, <em>ismath</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-class docutils literal notranslate"><span class="pre">FontProperties</span></code></a> <em>prop</em></p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.new_gc">
<code class="descname">new_gc</code><span class="sig-paren">(</span><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 <code class="xref py py-class docutils literal notranslate"><span class="pre">GraphicsContextBase</span></code></p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.points_to_pixels">
<code class="descname">points_to_pixels</code><span class="sig-paren">(</span><em>points</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="mf">72.0</span> <span class="o">*</span> <span class="n">dpi</span><span class="o">/</span><span class="mf">72.0</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-delimiter">:</span> <span class="classifier">scalar or array_like</span></dt>
<dd><p class="first last">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><strong>Points converted to pixels</strong></dt>
<dd></dd>
</dl>
</td>
</tr>
</tbody>
</table>
</dd></dl>
<dl class="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>surface</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="method">
<dt id="matplotlib.backends.backend_cairo.RendererCairo.set_width_height">
<code class="descname">set_width_height</code><span class="sig-paren">(</span><em>width</em>, <em>height</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>
</dd></dl>
</div>
</div>
</div>
</div>
</div>
<div class="clearer"></div>
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