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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"><title>Patterns</title><meta name="generator" content="DocBook XSL Stylesheets V1.68.1"><link rel="start" href="index.html" title="Cairo: A Vector Graphics Library"><link rel="up" href="Drawing.html" title="Drawing"><link rel="prev" href="cairo-Paths.html" title="Paths"><link rel="next" href="cairo-Transformations.html" title="Transformations"><meta name="generator" content="GTK-Doc V1.6 (XML mode)"><link rel="stylesheet" href="style.css" type="text/css"><link rel="part" href="pt01.html" title="Part I. Tutorial"><link rel="part" href="pt02.html" title="Part II. Reference"><link rel="chapter" href="Drawing.html" title="Drawing"><link rel="chapter" href="Fonts.html" title="Fonts"><link rel="chapter" href="Surfaces.html" title="Surfaces"><link rel="chapter" href="Support.html" title="Utilities"><link rel="index" href="ix01.html" title="Index"><link rel="appendix" href="language-bindings.html" title="Appendix A. Creating a language binding for cairo"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"><tr valign="middle"><td><a accesskey="p" href="cairo-Paths.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td><td><a accesskey="u" href="Drawing.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td><td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td><th width="100%" align="center">Cairo: A Vector Graphics Library</th><td><a accesskey="n" href="cairo-Transformations.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td></tr><tr><td colspan="5" class="shortcuts"><nobr><a href="#top_of_page" class="shortcut">Top</a>  |  <a href="#desc" class="shortcut">Description</a></nobr></td></tr></table><div class="refentry" lang="en"><a name="cairo-Patterns"></a><div class="titlepage"></div><div class="refnamediv"><table width="100%"><tr><td valign="top"><h2><span class="refentrytitle"><a name="top_of_page"></a>Patterns</span></h2><p>Patterns — Gradients and filtered sources</p></td><td valign="top" align="right"></td></tr></table></div><div class="refsynopsisdiv"><a name="synopsis"></a><h2>Synopsis</h2><pre class="synopsis">typedef <a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>;void <a href="cairo-Patterns.html#cairo-pattern-add-color-stop-rgb">cairo_pattern_add_color_stop_rgb</a> (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern, double offset, double red, double green, double blue);void <a href="cairo-Patterns.html#cairo-pattern-add-color-stop-rgba">cairo_pattern_add_color_stop_rgba</a> (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern, double offset, double red, double green, double blue, double alpha);<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* <a href="cairo-Patterns.html#cairo-pattern-create-rgb">cairo_pattern_create_rgb</a> (double red, double green, double blue);<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* <a href="cairo-Patterns.html#cairo-pattern-create-rgba">cairo_pattern_create_rgba</a> (double red, double green, double blue, double alpha);<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* <a href="cairo-Patterns.html#cairo-pattern-create-for-surface">cairo_pattern_create_for_surface</a> (<a href="cairo-cairo-surface-t.html#cairo-surface-t">cairo_surface_t</a> *surface);<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* <a href="cairo-Patterns.html#cairo-pattern-create-linear">cairo_pattern_create_linear</a> (double x0, double y0, double x1, double y1);<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* <a href="cairo-Patterns.html#cairo-pattern-create-radial">cairo_pattern_create_radial</a> (double cx0, double cy0, double radius0, double cx1, double cy1, double radius1);void <a href="cairo-Patterns.html#cairo-pattern-destroy">cairo_pattern_destroy</a> (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* <a href="cairo-Patterns.html#cairo-pattern-reference">cairo_pattern_reference</a> (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);<a href="cairo-Error-handling.html#cairo-status-t">cairo_status_t</a> <a href="cairo-Patterns.html#cairo-pattern-status">cairo_pattern_status</a> (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);enum <a href="cairo-Patterns.html#cairo-extend-t">cairo_extend_t</a>;void <a href="cairo-Patterns.html#cairo-pattern-set-extend">cairo_pattern_set_extend</a> (<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);<a href="cairo-Patterns.html#cairo-extend-t">cairo_extend_t</a> <a href="cairo-Patterns.html#cairo-pattern-get-extend">cairo_pattern_get_extend</a> (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);enum <a href="cairo-Patterns.html#cairo-filter-t">cairo_filter_t</a>;void <a href="cairo-Patterns.html#cairo-pattern-set-filter">cairo_pattern_set_filter</a> (<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);<a href="cairo-Patterns.html#cairo-filter-t">cairo_filter_t</a> <a href="cairo-Patterns.html#cairo-pattern-get-filter">cairo_pattern_get_filter</a> (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);void <a href="cairo-Patterns.html#cairo-pattern-set-matrix">cairo_pattern_set_matrix</a> (<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);void <a href="cairo-Patterns.html#cairo-pattern-get-matrix">cairo_pattern_get_matrix</a> (<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);enum <a href="cairo-Patterns.html#cairo-pattern-type-t">cairo_pattern_type_t</a>;<a href="cairo-Patterns.html#cairo-pattern-type-t">cairo_pattern_type_t</a> <a href="cairo-Patterns.html#cairo-pattern-get-type">cairo_pattern_get_type</a> (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern);</pre></div><div class="refsect1" lang="en"><a name="desc"></a><h2>Description</h2><p></p></div><div class="refsect1" lang="en"><a name="details"></a><h2>Details</h2><div class="refsect2" lang="en"><a name="id2567003"></a><h3><a name="cairo-pattern-t"></a>cairo_pattern_t</h3><a class="indexterm" name="id2567015"></a><pre class="programlisting">typedef struct _cairo_pattern cairo_pattern_t;</pre><p></p></div><hr><div class="refsect2" lang="en"><a name="id2567031"></a><h3><a name="cairo-pattern-add-color-stop-rgb"></a>cairo_pattern_add_color_stop_rgb ()</h3><a class="indexterm" name="id2567042"></a><pre class="programlisting">void cairo_pattern_add_color_stop_rgb (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern, double offset, double red, double green, double blue);</pre></div><hr><div class="refsect2" lang="en"><a name="id2538432"></a><h3><a name="cairo-pattern-add-color-stop-rgba"></a>cairo_pattern_add_color_stop_rgba ()</h3><a class="indexterm" name="id2538443"></a><pre class="programlisting">void cairo_pattern_add_color_stop_rgba (<a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a> *pattern, double offset, double red, double green, double blue, double alpha);</pre></div><hr><div class="refsect2" lang="en"><a name="id2538502"></a><h3><a name="cairo-pattern-create-rgb"></a>cairo_pattern_create_rgb ()</h3><a class="indexterm" name="id2538513"></a><pre class="programlisting"><a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* cairo_pattern_create_rgb (double red, double green, double blue);</pre></div><hr><div class="refsect2" lang="en"><a name="id2538551"></a><h3><a name="cairo-pattern-create-rgba"></a>cairo_pattern_create_rgba ()</h3><a class="indexterm" name="id2538563"></a><pre class="programlisting"><a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* cairo_pattern_create_rgba (double red, double green, double blue, double alpha);</pre></div><hr><div class="refsect2" lang="en"><a name="id2538607"></a><h3><a name="cairo-pattern-create-for-surface"></a>cairo_pattern_create_for_surface ()</h3><a class="indexterm" name="id2538620"></a><pre class="programlisting"><a href="cairo-Patterns.html#cairo-pattern-t">cairo_pattern_t</a>* cairo_pattern_create_for_surface (<a href="cairo-cairo-surface-t.html#cairo-surface-t">cairo_surface_t</a> *surface);</pre></div><hr><div class="refsect2" lang="en"><a name="id2538646"></a><h3><a name="cairo-pattern-create-linear"></a>cairo_pattern_create_linear ()</h3>⌨️ 快捷键说明
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