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<h2><span class="refentrytitle"><a name="goffice-0.10-Cairo-utilities.top_of_page"></a>Cairo utilities</span></h2>
<p>Cairo utilities</p>
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<div class="refsynopsisdiv">
<a name="goffice-0.10-Cairo-utilities.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">#define <a class="link" href="goffice-0.10-Cairo-utilities.html#GO-CAIRO-CLAMP:CAPS" title="GO_CAIRO_CLAMP()">GO_CAIRO_CLAMP</a> (x)
#define <a class="link" href="goffice-0.10-Cairo-utilities.html#GO-CAIRO-CLAMP-SNAP:CAPS" title="GO_CAIRO_CLAMP_SNAP()">GO_CAIRO_CLAMP_SNAP</a> (x,
even)
<span class="returnvalue">void</span> <a class="link" href="goffice-0.10-Cairo-utilities.html#go-cairo-convert-data-from-pixbuf" title="go_cairo_convert_data_from_pixbuf ()">go_cairo_convert_data_from_pixbuf</a> (<em class="parameter"><code>unsigned <span class="type">char</span> *dst</code></em>,
<em class="parameter"><code>unsigned <span class="type">char</span> const *src</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><span class="type">int</span> rowstride</code></em>);
<span class="returnvalue">void</span> <a class="link" href="goffice-0.10-Cairo-utilities.html#go-cairo-convert-data-to-pixbuf" title="go_cairo_convert_data_to_pixbuf ()">go_cairo_convert_data_to_pixbuf</a> (<em class="parameter"><code>unsigned <span class="type">char</span> *dst</code></em>,
<em class="parameter"><code>unsigned <span class="type">char</span> const *src</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><span class="type">int</span> rowstride</code></em>);
<span class="returnvalue">void</span> <a class="link" href="goffice-0.10-Cairo-utilities.html#go-cairo-emit-svg-path" title="go_cairo_emit_svg_path ()">go_cairo_emit_svg_path</a> (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/cairo/cairo-cairo-t.html#cairo-t"><span class="type">cairo_t</span></a> *cr</code></em>,
<em class="parameter"><code><span class="type">char</span> const *path</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="goffice-0.10-Cairo-utilities.html#go-cairo-surface-is-vector" title="go_cairo_surface_is_vector ()">go_cairo_surface_is_vector</a> (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/cairo/cairo-cairo-surface-t.html#cairo-surface-t"><span class="type">cairo_surface_t</span></a> const *surface</code></em>);
</pre>
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<div class="refsect1">
<a name="goffice-0.10-Cairo-utilities.description"></a><h2>Description</h2>
<p>
</p>
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<div class="refsect1">
<a name="goffice-0.10-Cairo-utilities.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GO-CAIRO-CLAMP:CAPS"></a><h3>GO_CAIRO_CLAMP()</h3>
<pre class="programlisting">#define GO_CAIRO_CLAMP(x) CLAMP((x),-8000000,8000000)
</pre>
<p>
</p>
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<div class="refsect2">
<a name="GO-CAIRO-CLAMP-SNAP:CAPS"></a><h3>GO_CAIRO_CLAMP_SNAP()</h3>
<pre class="programlisting">#define GO_CAIRO_CLAMP_SNAP(x,even) GO_CAIRO_CLAMP(even ? floor (x + .5):floor (x) + .5)
</pre>
<p>
</p>
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<div class="refsect2">
<a name="go-cairo-convert-data-from-pixbuf"></a><h3>go_cairo_convert_data_from_pixbuf ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> go_cairo_convert_data_from_pixbuf (<em class="parameter"><code>unsigned <span class="type">char</span> *dst</code></em>,
<em class="parameter"><code>unsigned <span class="type">char</span> const *src</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><span class="type">int</span> rowstride</code></em>);</pre>
<p>
Converts the pixel data stored in <em class="parameter"><code>src</code></em> in GDK_COLORSPACE_RGB pixbuf
format to CAIRO_FORMAT_ARGB32 cairo format and move them
to <em class="parameter"><code>dst</code></em>. If <em class="parameter"><code>src</code></em> == <em class="parameter"><code>dst</code></em>, pixel are converted in place.
</p>
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<td><p><span class="term"><em class="parameter"><code>dst</code></em> :</span></p></td>
<td>a pointer to pixel data in cairo format</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>src</code></em> :</span></p></td>
<td>a pointer to pixel data in pixbuf format</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>image width</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>image height</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>rowstride</code></em> :</span></p></td>
<td>data rowstride</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="go-cairo-convert-data-to-pixbuf"></a><h3>go_cairo_convert_data_to_pixbuf ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> go_cairo_convert_data_to_pixbuf (<em class="parameter"><code>unsigned <span class="type">char</span> *dst</code></em>,
<em class="parameter"><code>unsigned <span class="type">char</span> const *src</code></em>,
<em class="parameter"><code><span class="type">int</span> width</code></em>,
<em class="parameter"><code><span class="type">int</span> height</code></em>,
<em class="parameter"><code><span class="type">int</span> rowstride</code></em>);</pre>
<p>
Converts the pixel data stored in <em class="parameter"><code>src</code></em> in CAIRO_FORMAT_ARGB32 cairo format
to GDK_COLORSPACE_RGB pixbuf format and move them
to <em class="parameter"><code>dst</code></em>. If <em class="parameter"><code>src</code></em> == <em class="parameter"><code>dst</code></em>, pixel are converted in place.
</p>
<div class="variablelist"><table border="0" class="variablelist">
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<col align="left" valign="top">
<col>
</colgroup>
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<tr>
<td><p><span class="term"><em class="parameter"><code>dst</code></em> :</span></p></td>
<td>a pointer to pixel data in pixbuf format</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>src</code></em> :</span></p></td>
<td>a pointer to pixel data in cairo format</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>width</code></em> :</span></p></td>
<td>image width</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>height</code></em> :</span></p></td>
<td>image height</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>rowstride</code></em> :</span></p></td>
<td>data rowstride</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="go-cairo-emit-svg-path"></a><h3>go_cairo_emit_svg_path ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> go_cairo_emit_svg_path (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/cairo/cairo-cairo-t.html#cairo-t"><span class="type">cairo_t</span></a> *cr</code></em>,
<em class="parameter"><code><span class="type">char</span> const *path</code></em>);</pre>
<p>
Emits a path described as a SVG path string (d property of path elements) to
a cairo context.
</p>
<div class="variablelist"><table border="0" class="variablelist">
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<td><p><span class="term"><em class="parameter"><code>cr</code></em> :</span></p></td>
<td>a cairo context</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>path</code></em> :</span></p></td>
<td>a SVG path</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="go-cairo-surface-is-vector"></a><h3>go_cairo_surface_is_vector ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> go_cairo_surface_is_vector (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/cairo/cairo-cairo-surface-t.html#cairo-surface-t"><span class="type">cairo_surface_t</span></a> const *surface</code></em>);</pre>
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