cairo-patterns.html

按照官方的说法：Cairo is a vector graphics library with cross-device output support. 翻译过来

<a class="indexterm" name="id2538658"></a><pre class="programlisting"><a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* cairo_pattern_create_linear
                                            (double x0,
                                             double y0,
                                             double x1,
                                             double y1);</pre>
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<div class="refsect2" lang="en">
<a name="id2576736"></a><h3>
<a name="cairo-pattern-create-radial"></a>cairo_pattern_create_radial ()</h3>
<a class="indexterm" name="id2576746"></a><pre class="programlisting"><a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* cairo_pattern_create_radial
                                            (double cx0,
                                             double cy0,
                                             double radius0,
                                             double cx1,
                                             double cy1,
                                             double radius1);</pre>
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<div class="refsect2" lang="en">
<a name="id2576799"></a><h3>
<a name="cairo-pattern-destroy"></a>cairo_pattern_destroy ()</h3>
<a class="indexterm" name="id2576809"></a><pre class="programlisting">void        cairo_pattern_destroy           (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);</pre>
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<div class="refsect2" lang="en">
<a name="id2576830"></a><h3>
<a name="cairo-pattern-reference"></a>cairo_pattern_reference ()</h3>
<a class="indexterm" name="id2576840"></a><pre class="programlisting"><a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* cairo_pattern_reference    (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);</pre>
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<div class="refsect2" lang="en">
<a name="id2576863"></a><h3>
<a name="cairo-pattern-status"></a>cairo_pattern_status ()</h3>
<a class="indexterm" name="id2576874"></a><pre class="programlisting"><a href="cairo-Error-handling.html#cairo-status-t">cairo_status_t</a> cairo_pattern_status         (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);</pre>
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<div class="refsect2" lang="en">
<a name="id2576899"></a><h3>
<a name="cairo-extend-t"></a>enum cairo_extend_t</h3>
<a class="indexterm" name="id2576911"></a><pre class="programlisting">typedef enum _cairo_extend {
    CAIRO_EXTEND_NONE,
    CAIRO_EXTEND_REPEAT,
    CAIRO_EXTEND_REFLECT,
    CAIRO_EXTEND_PAD
} cairo_extend_t;
</pre>
<p>
<a href="cairo-Patterns.html#cairo-extend-t"><span class="type">cairo_extend_t</span></a> is used to describe how the area outside
of a pattern will be drawn.</p>
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</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><a name="CAIRO-EXTEND-NONE:CAPS"></a><code class="literal">CAIRO_EXTEND_NONE</code></span></td>
<td> pixels outside of the source pattern
  are fully transparent
</td>
</tr>
<tr>
<td>
<span class="term"><a name="CAIRO-EXTEND-REPEAT:CAPS"></a><code class="literal">CAIRO_EXTEND_REPEAT</code></span></td>
<td> the pattern is tiled by repeating
</td>
</tr>
<tr>
<td>
<span class="term"><a name="CAIRO-EXTEND-REFLECT:CAPS"></a><code class="literal">CAIRO_EXTEND_REFLECT</code></span></td>
<td> the pattern is tiled by reflecting
  at the edges (not implemented for surface patterns currently)
</td>
</tr>
<tr>
<td>
<span class="term"><a name="CAIRO-EXTEND-PAD:CAPS"></a><code class="literal">CAIRO_EXTEND_PAD</code></span></td>
<td> pixels outside of the pattern copy
  the closest pixel from the source (Since 1.2; not implemented
  for surface patterns currently)
</td>
</tr>
</tbody>
</table></div>
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<div class="refsect2" lang="en">
<a name="id2577035"></a><h3>
<a name="cairo-pattern-set-extend"></a>cairo_pattern_set_extend ()</h3>
<a class="indexterm" name="id2577046"></a><pre class="programlisting">void        cairo_pattern_set_extend        (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern,
                                             <a href="cairo-Patterns.html#cairo-extend-t">cairo_extend_t</a> extend);</pre>
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<div class="refsect2" lang="en">
<a name="id2577077"></a><h3>
<a name="cairo-pattern-get-extend"></a>cairo_pattern_get_extend ()</h3>
<a class="indexterm" name="id2577089"></a><pre class="programlisting"><a href="cairo-Patterns.html#cairo-extend-t">cairo_extend_t</a> cairo_pattern_get_extend     (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);</pre>
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<div class="refsect2" lang="en">
<a name="id2577113"></a><h3>
<a name="cairo-filter-t"></a>enum cairo_filter_t</h3>
<a class="indexterm" name="id2577126"></a><pre class="programlisting">typedef enum _cairo_filter {
    CAIRO_FILTER_FAST,
    CAIRO_FILTER_GOOD,
    CAIRO_FILTER_BEST,
    CAIRO_FILTER_NEAREST,
    CAIRO_FILTER_BILINEAR,
    CAIRO_FILTER_GAUSSIAN
} cairo_filter_t;
</pre>
<p>

</p>
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<div class="refsect2" lang="en">
<a name="id2577144"></a><h3>
<a name="cairo-pattern-set-filter"></a>cairo_pattern_set_filter ()</h3>
<a class="indexterm" name="id2577156"></a><pre class="programlisting">void        cairo_pattern_set_filter        (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern,
                                             <a href="cairo-Patterns.html#cairo-filter-t">cairo_filter_t</a> filter);</pre>
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<div class="refsect2" lang="en">
<a name="id2577187"></a><h3>
<a name="cairo-pattern-get-filter"></a>cairo_pattern_get_filter ()</h3>
<a class="indexterm" name="id2577198"></a><pre class="programlisting"><a href="cairo-Patterns.html#cairo-filter-t">cairo_filter_t</a> cairo_pattern_get_filter     (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);</pre>
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<div class="refsect2" lang="en">
<a name="id2577223"></a><h3>
<a name="cairo-pattern-set-matrix"></a>cairo_pattern_set_matrix ()</h3>
<a class="indexterm" name="id2577234"></a><pre class="programlisting">void        cairo_pattern_set_matrix        (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern,
                                             const <a href="cairo-cairo-matrix-t.html#cairo-matrix-t">cairo_matrix_t</a> *matrix);</pre>
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<div class="refsect2" lang="en">
<a name="id2577266"></a><h3>
<a name="cairo-pattern-get-matrix"></a>cairo_pattern_get_matrix ()</h3>
<a class="indexterm" name="id2563126"></a><pre class="programlisting">void        cairo_pattern_get_matrix        (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern,
                                             <a href="cairo-cairo-matrix-t.html#cairo-matrix-t">cairo_matrix_t</a> *matrix);</pre>
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<div class="refsect2" lang="en">
<a name="id2577290"></a><h3>
<a name="cairo-pattern-type-t"></a>enum cairo_pattern_type_t</h3>
<a class="indexterm" name="id2577302"></a><pre class="programlisting">typedef enum _cairo_pattern_type {
    CAIRO_PATTERN_TYPE_SOLID,
    CAIRO_PATTERN_TYPE_SURFACE,
    CAIRO_PATTERN_TYPE_LINEAR,
    CAIRO_PATTERN_TYPE_RADIAL
} cairo_pattern_type_t;
</pre>
<p>Since  1.2
</p>
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<div class="refsect2" lang="en">
<a name="id2577321"></a><h3>
<a name="cairo-pattern-get-type"></a>cairo_pattern_get_type ()</h3>
<a class="indexterm" name="id2577333"></a><pre class="programlisting"><a href="cairo-Patterns.html#cairo-pattern-type-t">cairo_pattern_type_t</a> cairo_pattern_get_type (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);</pre>
<p>Since  1.2
</p>
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