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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>goocanvas.Style</title><link rel="stylesheet" type="text/css" href="style.css"><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="index.html" title="PyGooCanvas Reference Manual"><link rel="up" href="pygoocanvas-core-classes.html" title="PyGooCanvas Core Class Reference"><link rel="prev" href="class-canvas-item-model-simple.html" title="goocanvas.ItemModelSimple"><link rel="next" href="pygoocanvas-std-items.html" title="PyGooCanvas Standard Canvas Items Reference"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">goocanvas.Style</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="class-canvas-item-model-simple.html">Prev</a> </td><th width="60%" align="center">PyGooCanvas Core Class Reference</th><td width="20%" align="right"> <a accesskey="n" href="pygoocanvas-std-items.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="class-canvas-style"></a><div class="titlepage"></div><div class="refnamediv"><h2>goocanvas.Style</h2><p>goocanvas.Style — Support for cascading style properties for canvas items.</p></div><div class="refsect1"><a name="idm6032"></a><h2>Synopsis</h2><table bgcolor="#D0E0F0" width="100%"><tr><td><pre class="classsynopsis">class <span class="ooclass"><span class="classname">goocanvas.Style</span></span>(<span class="ooclass"><span class="classname">gobject.GObject</span></span>):
<code class="constructorsynopsis"> <span class="methodname"><a class="link" href="class-canvas-style.html#constructor-canvas-style" title="Constructor">goocanvas.Style</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-canvas-style.html#method-goocanvasstyle--copy" title="goocanvas.Style.copy">copy</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-canvas-style.html#method-goocanvasstyle--get-parent" title="goocanvas.Style.get_parent">get_parent</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-canvas-style.html#method-goocanvasstyle--get-style-property" title="goocanvas.Style.get_style_property">get_style_property</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>property_id</code></strong></span></span>)</code><br><code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-canvas-style.html#method-goocanvasstyle--set-fill-options" title="goocanvas.Style.set_fill_options">set_fill_options</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>)</code><br><code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-canvas-style.html#method-goocanvasstyle--set-parent" title="goocanvas.Style.set_parent">set_parent</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>parent</code></strong></span></span>)</code><br><code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-canvas-style.html#method-goocanvasstyle--set-stroke-options" title="goocanvas.Style.set_stroke_options">set_stroke_options</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>)</code><br><code class="methodsynopsis"> def <span class="methodname"><a class="link" href="class-canvas-style.html#method-goocanvasstyle--set-style-property" title="goocanvas.Style.set_style_property">set_style_property</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>property_id</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>value</code></strong></span></span>)</code><br></pre></td></tr></table></div><div class="refsect1"><a name="idm6078"></a><h2>Ancestry</h2><pre class="synopsis">+-- <a
href="../pygobject/class-gobject.html"
>gobject.GObject</a>
+-- <a class="link" href="class-canvas-style.html" title="goocanvas.Style">goocanvas.Style</a>
</pre></div><div class="refsect1"><a name="idm6083"></a><h2>Description</h2><p>
<a class="link" href="class-canvas-style.html" title="goocanvas.Style"><code class="classname">goocanvas.Style</code></a>
provides support for cascading style properties for canvas items.
It is intended to be used when implementing new canvas items.
</p><p>
Style properties are identified by a unique GQuark, and contain arbitrary data stored in a GValue.
</p><p>
<a class="link" href="class-canvas-style.html" title="goocanvas.Style"><code class="classname">goocanvas.Style</code></a>
also provides a few convenience functions such as
<code class="methodname"><a class="link" href="class-canvas-style.html#method-goocanvasstyle--set-stroke-options" title="goocanvas.Style.set_stroke_options">set_stroke_options</a></code>
and <code class="methodname"><a class="link" href="class-canvas-style.html#method-goocanvasstyle--set-fill-options" title="goocanvas.Style.set_fill_options">set_fill_options</a></code>
which efficiently apply an item's standard style properties to the given cairo_t.
</p></div><div class="refsect1"><a name="constructor-canvas-style"></a><h2>Constructor</h2><pre class="programlisting"><code class="constructorsynopsis"> <span class="methodname">goocanvas.Style</span>()</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>A new
<a class="link" href="class-canvas-style.html" title="goocanvas.Style"><code class="classname">goocanvas.Style</code></a>
</td></tr></tbody></table><p>
Creates a new canvas Style object.
</p></div><div class="refsect1"><a name="idm6110"></a><h2>Methods</h2><div class="refsect2"><a name="method-goocanvasstyle--copy"></a><h3>goocanvas.Style.copy</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">convert_from_item_scopypace</span>(<span class="methodparam"></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>A copy of the given <a class="link" href="class-canvas-style.html" title="goocanvas.Style">
<code class="classname">goocanvas.Style</code></a></td></tr></tbody></table><p>
Copies the given <a class="link" href="class-canvas-style.html" title="goocanvas.Style"><code class="classname">goocanvas.Style</code></a>,
by copying all of its properties. Though the parent of the new style is left unset.
</p></div><div class="refsect2"><a name="method-goocanvasstyle--get-parent"></a><h3>goocanvas.Style.get_parent</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">get_parent</span>(<span class="methodparam"></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>The parent of the given style, or None.</td></tr></tbody></table><p>
Gets the parent of the style.
</p></div><div class="refsect2"><a name="method-goocanvasstyle--get-style-property"></a><h3>goocanvas.Style.get_style_property</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">get_style_property</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>property_id</code></strong></span></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><strong class="parameter"><code>property_id</code></strong> :</span></p></td><td>The property identifier.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>The property value, or None if it isn't set.</td></tr></tbody></table><p>
Gets the value of a property.
</p><p>
This searches though all the <a class="link" href="class-canvas-style.html" title="goocanvas.Style"><code class="classname">goocanvas.Style</code></a>'s
own list of property settings and also all ancestor
<a class="link" href="class-canvas-style.html" title="goocanvas.Style"><code class="classname">goocanvas.Style</code></a> objects.
</p></div><div class="refsect2"><a name="method-goocanvasstyle--set-fill-options"></a><h3>goocanvas.Style.set_fill_options</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">set_fill_options</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><strong class="parameter"><code>cr</code></strong> :</span></p></td><td>A cairo context.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>True if a paint source is set,
or False if the fill should be skipped.</td></tr></tbody></table><p>
Sets the standard cairo fill options using the given style.
</p></div><div class="refsect2"><a name="method-goocanvasstyle--set-parent"></a><h3>goocanvas.Style.set_parent</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">set_parent</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>parent</code></strong></span></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><strong class="parameter"><code>parent</code></strong> :</span></p></td><td>The new parent</td></tr></tbody></table><p>
Sets the parent of the style.
</p></div><div class="refsect2"><a name="method-goocanvasstyle--set-stroke-options"></a><h3>goocanvas.Style.set_stroke_options</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">set_stroke_options</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><strong class="parameter"><code>cr</code></strong> :</span></p></td><td>A cairo context.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>True if a paint source is set,
or False if the stroke should be skipped.</td></tr></tbody></table><p>
Sets the standard cairo stroke options using the given style.
</p></div><div class="refsect2"><a name="method-goocanvasstyle--set-style-property"></a><h3>goocanvas.Style.set_style_property</h3><pre class="programlisting"><code class="methodsynopsis"> def <span class="methodname">set_style_property</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>property_id</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>value</code></strong></span></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><strong class="parameter"><code>property_id</code></strong> :</span></p></td><td>the property identifier.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>value</code></strong> :</span></p></td><td> the value of the property.</td></tr></tbody></table><p>
Sets a property in the style, replacing any current setting.
</p><p>
Note that this will override the property setting in ancestor
<a class="link" href="class-canvas-style.html" title="goocanvas.Style"><code class="classname">goocanvas.Style</code></a> objects.
</p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="class-canvas-item-model-simple.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="pygoocanvas-core-classes.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="pygoocanvas-std-items.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">goocanvas.ItemModelSimple </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> PyGooCanvas Standard Canvas Items Reference</td></tr></table></div></body></html>
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