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<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>goocanvas.Item</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.html" title="goocanvas.Canvas"><link rel="next" href="class-canvas-item-simple.html" title="goocanvas.ItemSimple"></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.Item</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="class-canvas.html">Prev</a> </td><th width="60%" align="center">PyGooCanvas Core Class Reference</th><td width="20%" align="right"> <a accesskey="n" href="class-canvas-item-simple.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="class-canvas-item"></a><div class="titlepage"></div><div class="refnamediv"><h2>goocanvas.Item</h2><p>goocanvas.Item — The interface for canvas items.</p></div><div class="refsect1"><a name="idm1366"></a><h2>Synopsis</h2><table bgcolor="#D0E0F0" width="100%"><tr><td><pre class="classsynopsis">class <span class="ooclass"><span class="classname">goocanvas.Item</span></span>(<span class="ooclass"><span class="classname">gobject.GInterface</span></span>):
<code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--add-child" title="goocanvas.Item.add_child">add_child</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>item</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>position</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--allocate-area" title="goocanvas.Item.allocate_area">allocate_area</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>requested_area</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>allocated_area</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>x_offset</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>y_offset</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--animate" title="goocanvas.Item.animate">animate</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>x</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>y</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>scale</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>degrees</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>absolute</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>duration</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>step_time</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>type</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--ensure-updated" title="goocanvas.Item.ensure_updated">ensure_updated</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--find-child" title="goocanvas.Item.find_child">find_child</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-bounds" title="goocanvas.Item.get_bounds">get_bounds</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-canvas" title="goocanvas.Item.get_canvas">get_canvas</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-child" title="goocanvas.Item.get_child">get_child</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child_num</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-child-properties" title="goocanvas.Item.get_child_properties">get_child_properties</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>properties</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-child-property" title="goocanvas.Item.get_child_property">get_child_property</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>property</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-items-at" title="goocanvas.Item.get_items_at">get_items_at</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>x</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>y</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>is_pointer_event</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>parent_is_visible</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-model" title="goocanvas.Item.get_model">get_model</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-n-children" title="goocanvas.Item.get_n_children">get_n_children</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-parent" title="goocanvas.Item.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-item.html#method-goocanvasitem--get-requested-area" title="goocanvas.Item.get_requested_area">get_requested_area</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-item.html#method-goocanvasitem--get-requested-height" title="goocanvas.Item.get_requested_height">get_requested_height</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>width</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-style" title="goocanvas.Item.get_style">get_style</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-simple-transform" title="goocanvas.Item.get_simple_transform">get_simple_tranform</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-transform" title="goocanvas.Item.get_transform">get_transform</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--get-transform-for-child" title="goocanvas.Item.get_transform_for_child">get_transform_for_child</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--is-container" title="goocanvas.Item.is_container">is_container</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--is-visible" title="goocanvas.Item.is_visible">is_visible</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--lower" title="goocanvas.Item.lower">lower</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>below</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--move-child" title="goocanvas.Item.move_child">move_child</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>old_position</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>new_position</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--paint" title="goocanvas.Item.paint">paint</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>bounds</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>scale</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--raise-" title="goocanvas.Item.raise_">raise_</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>above</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--remove" title="goocanvas.Item.remove">remove</a></span>(<span class="methodparam"></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--remove-child" title="goocanvas.Item.remove_child">remove_child</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child_num</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--request-update" title="goocanvas.Item.request_update">request_update</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child_num</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--rotate" title="goocanvas.Item.rotate">rotate</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>degrees</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cx</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cy</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--scale" title="goocanvas.Item.scale">scale</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>sx</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>sy</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--set-canvas" title="goocanvas.Item.set_canvas">set_canvas</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>canvas</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--set-child-properties" title="goocanvas.Item.set_child_properties">set_child_properties</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>properties</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--set-child-property" title="goocanvas.Item.set_child_property">set_child_property</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>property</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--set-model" title="goocanvas.Item.set_model">set_model</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>model</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--set-parent" title="goocanvas.Item.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-item.html#method-goocanvasitem--set-simple-transform" title="goocanvas.Item.set_simple_transform">set_simple_transform</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>x</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>y</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>scale</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>rotation</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--set-style" title="goocanvas.Item.set_style">set_style</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>style</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--set-transform" title="goocanvas.Item.set_transform">set_transform</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>matrix</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--skew-x" title="goocanvas.Item.skew_x">skew_x</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>degrees</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cx</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cy</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--skew-y" title="goocanvas.Item.skew_y">skew_y</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>degrees</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cx</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cy</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--stop-animation" title="goocanvas.Item.stop_animation">stop_animation</a></span><span class="methodname"></span>()</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--translate" title="goocanvas.Item.translate">translate</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>tx</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>ty</code></strong></span></span>)</code><br><code class="methodsynopsis">    def <span class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--update" title="goocanvas.Item.update">update</a></span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>entire_tree</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>)</code><br></pre></td></tr></table></div><div class="refsect1"><a name="idm1652"></a><h2>Ancestry</h2><pre class="synopsis">+-- <a
href="../pygobject/class-gobjectginterface.html"
>gobject.GInterface</a>
    +-- <a class="link" href="class-canvas-item.html" title="goocanvas.Item">goocanvas.Item</a>
</pre></div><div class="refsect1"><a name="properties-goocanvasitem"></a><h2>goocanvas.Item Properties</h2><div class="blockquote"><table width="100%" border="0" bgcolor="#E0E0E0"><tr><td valign="top"><div class="informaltable"><table class="informaltable" width="100%" border="0"><colgroup><col width="1in"><col width="1in"><col width="3.5in"></colgroup><tbody><tr valign="top"><td valign="top">"can-focus"</td><td valign="top">Read/Write</td><td valign="top">If the item can take the keyboard focus.
                            Default value: <code class="literal">False</code>.</td></tr><tr valign="top"><td valign="top">"description"</td><td valign="top">Read/Write</td><td valign="top">A description of the item for use by assistive technologies.
                            Default value: <code class="literal">None</code>.</td></tr><tr valign="top"><td valign="top">"parent"</td><td valign="top">Read/Write</td><td valign="top">The parent item.</td></tr><tr valign="top"><td valign="top">"pointer-events"</td><td valign="top">Read/Write</td><td valign="top">Specifies when the item receives pointer events. Default value:
                                goocanvas.EVENTS_VISIBLE_MASK|goocanvas.EVENTS_PAINTED_MASK|
                                goocanvas.EVENTS_FILL_MASK|goocanvas.EVENTS_STROKE_MASK.</td></tr><tr valign="top"><td valign="top">"title"</td><td valign="top">Read/Write</td><td valign="top">A short context-rich description of the item for use by 
                                assistive technologies. Default value: <code class="literal">None</code>.</td></tr><tr valign="top"><td valign="top">"tooltip"</td><td valign="top">Read/Write</td><td valign="top">The tooltip to display for the item. Default value: <code class="literal">None</code>.</td></tr><tr valign="top"><td valign="top">"transform"</td><td valign="top">Read/Write</td><td valign="top">The transformation matrix of the item.</td></tr><tr valign="top"><td valign="top">"visibility"</td><td valign="top">Read/Write</td><td valign="top">When the canvas item is visible. Default value: goocanvas.ITEM_VISIBLE.</td></tr><tr valign="top"><td valign="top">"visibility-threshold"</td><td valign="top">Read/Write</td><td valign="top">The scale threshold at which the item becomes visible. 
                                Allowed values: &gt;= 0 Default value: 0.</td></tr></tbody></table></div></td></tr></table></div></div><div class="refsect1"><a name="signal-prototypes-goocanvasitem"></a><h2>goocanvas.Item Signal Prototypes</h2><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--animation-finished" title='The "animation-finished" goocanvas.Item Signal'>"animation-finished"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>stopped</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--button-press-event" title='The "button-press-event" goocanvas.Item Signal'>"button-press-event"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--button-release-event" title='The "button-release-event" goocanvas.Item Signal'>"button-release-event"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--child-notify" title='The "child-notify" goocanvas.Item Signal'>"child-notify"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>pspec</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--enter-notify-event" title='The "enter-notify-events" goocanvas.Item Signal'>"enter-notify-event"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--focus-in-event" title='The "focus-in-event" goocanvas.Item Signal'>"focus-in-event"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--focus-out-event" title='The "focus-out-event" goocanvas.Item Signal'>"focus-out-event"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--grab-broken-event" title='The "grab-broken-event" goocanvas.Item Signal'>"grab-broken-event"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--key-press-event" title='The "key-press-event" goocanvas.Item Signal'>"key-press-event"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--key-release-event" title='The "key-release-event" goocanvas.Item Signal'>"key-release-event"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--leave-notify-event" title='The "leave-notify-event" goocanvas.Item Signal'>"leave-notify-event"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--motion-notify-event" title='The "motion-notify-event" goocanvas.Item Signal'>"motion-notify-event"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--query-tooltip" title='The "query-tooltip" goocanvas.Item Signal'>"query-tooltip"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>x</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>y</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>keyboard_mode</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>tooltip</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr><tr><td><p><span class="term"><a class="link" href="class-canvas-item.html#signal-goocanvasitem--scroll-event" title='The "scroll-event" goocanvas.Item Signal'>"scroll-event"</a></span></p></td><td><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></span></span>)</code></td></tr></tbody></table></div><div class="refsect1"><a name="idm1933"></a><h2>Known Implementation</h2><p>
            <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a>
            is implementated by 
            <a class="link" href="class-canvas-rect.html" title="goocanvas.Rect"><code class="classname">goocanvas.Rect</code></a>,
            <a class="link" href="class-canvas-ellipse.html" title="goocanvas.Ellipse"><code class="classname">goocanvas.Ellipse</code></a>,
            <a class="link" href="class-canvas-path.html" title="goocanvas.Path"><code class="classname">goocanvas.Path</code></a>,
            <a class="link" href="class-canvas-polyline.html" title="goocanvas.Polyline"><code class="classname">goocanvas.Polyline</code></a>,
            <a class="link" href="class-canvas-text.html" title="goocanvas.Text"><code class="classname">goocanvas.Text</code></a>,
            <a class="link" href="class-canvas-image.html" title="goocanvas.Image"><code class="classname">goocanvas.Image</code></a>,
            <a class="link" href="class-canvas-group.html" title="goocanvas.Group"><code class="classname">goocanvas.Group</code></a>,
            <a class="link" href="class-canvas-widget.html" title="goocanvas.Widget"><code class="classname">goocanvas.Widget</code></a>,
            <a class="link" href="class-canvas-table.html" title="goocanvas.Table"><code class="classname">goocanvas.Table</code></a>,
            <a class="link" href="class-canvas-item-simple.html" title="goocanvas.ItemSimple"><code class="classname">goocanvas.ItemSimple</code></a>
        </p></div><div class="refsect1"><a name="idm1958"></a><h2>Description</h2><a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
            defines the interface that canvas items must implement, and contains methods for operating on canvas items.
    </div><div class="refsect1"><a name="idm1962"></a><h2>Methods</h2><div class="refsect2"><a name="method-goocanvasitem--add-child"></a><h3>goocanvas.Item.add_child</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">add_child</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>item</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>position</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>item</code></strong> :</span></p></td><td>The item to add.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>position</code></strong> :</span></p></td><td>the position of the item, or -1 to place it 
                            last (at the top of the stacking order).</td></tr></tbody></table><p>
                Adds a child item to a container item at the given stack position.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--allocate-area"></a><h3>goocanvas.Item.allocate_area</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">allocate_area</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>requested_area</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>allocated_area</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>x_offset</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>y_offset</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"><strong class="parameter"><code>requested_area</code></strong> :</span></p></td><td>The area that the item originally requested, in the parent's coordinate space.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>allocated_area</code></strong> :</span></p></td><td>The area that the item has been allocated, in the parent's coordinate space.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>x_offset</code></strong> :</span></p></td><td>The x offset of the allocated area from the requested area in
                                       the device coordinate space.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>y_offset</code></strong> :</span></p></td><td>The y offset of the allocated area from the requested area in
                                       the device coordinate space.</td></tr></tbody></table><p>
                This is used by <a class="link" href="class-canvas-table.html" title="goocanvas.Table"><code class="classname">goocanvas.Table</code></a>
                and other layout items to allocate an area to each of their children.
            </p><p>
                Note that the parent item will use a transform to move each of its children for the layout,
                so their is no need for the item to reposition itself. It only needs to recalculate its device bounds.
            </p><p>
                The x_offset and y_offset are provided since for the simple builtin items all they need
                to do is add these to their bounds.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--animate"></a><h3>goocanvas.Item.animate</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">animate</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>x</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>y</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>scale</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>degrees</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>absolute</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>duration</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>step_time</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>type</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>x</code></strong> :</span></p></td><td>the final x offset from the current position.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>y</code></strong> :</span></p></td><td>the final y offset from the current position.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>scale</code></strong> :</span></p></td><td>the final scale of the item.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>degrees</code></strong> :</span></p></td><td>the final rotation of the item.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>absolute</code></strong> :</span></p></td><td>if the x, y, scale and degrees values are absolute, or relative to the
                    current transform. Note that absolute animations only work if the item currently has a simple transform.
                    If the item has a shear or some other complicated transform it may result in strange animations.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>duration</code></strong> :</span></p></td><td>the duration of the animation, in milliseconds 
                            (1/1000ths of a second).</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>step_time</code></strong> :</span></p></td><td>the time between each animation step, in milliseconds.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>type</code></strong> :</span></p></td><td>specifies what happens when the animation finishes.</td></tr></tbody></table><p>
                Animates an item from its current position to the given offsets, scale and rotation.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--ensure-updated"></a><h3>goocanvas.Item.ensure_updated</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">ensure_updated</span>(<span class="methodparam"></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody></tbody></table><p>
                Updates the canvas immediately, if an update is scheduled. This ensures that all item bounds are up-to-date.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--find-child"></a><h3>goocanvas.Item.find_child</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">find_child</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</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>child</code></strong> :</span></p></td><td>the child item to find.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>The position of the given child item, or -1 if it isn't found.</td></tr></tbody></table><p>
                Attempts to find the given child item with the container's stack.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-bounds"></a><h3>goocanvas.Item.get_bounds</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_bounds</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 <code class="classname">goocanvas.Bounds</code>
                    holding the four coordinates.</td></tr></tbody></table><p>
                Gets the bounds of the item.
                Note that the bounds includes the entire fill and stroke extents of the item,
                whether they are painted or not.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-canvas"></a><h3>goocanvas.Item.get_canvas</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_canvas</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
                    <a class="link" href="class-canvas.html" title="goocanvas.Canvas"><code class="classname">goocanvas.Canvas</code></a></td></tr></tbody></table><p>
                Returns the <a class="link" href="class-canvas.html" title="goocanvas.Canvas"><code class="classname">goocanvas.Canvas</code></a>
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-child"></a><h3>goocanvas.Item.get_child</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_child</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child_num</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>child_num</code></strong> :</span></p></td><td>the position of a child in the container's stack.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>The child item at the given stack position.</td></tr></tbody></table><p>
                Gets the child item at the given stack position.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-child-properties"></a><h3>goocanvas.Item.get_child_properties</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_child_properties</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>properties</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>child</code></strong> :</span></p></td><td>a child
                    <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a>
                    </td></tr><tr><td><p><span class="term"><strong class="parameter"><code>properties</code></strong> :</span></p></td><td>property names as string</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>A tuple containing the property values.</td></tr></tbody></table><p>
                Gets the values of one or more child properties of child.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-child-property"></a><h3>goocanvas.Item.get_child_property</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_child_property</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>property</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>child</code></strong> :</span></p></td><td>a child
                    <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a>
                    </td></tr><tr><td><p><span class="term"><strong class="parameter"><code>property</code></strong> :</span></p></td><td>property name as string</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>The property value.</td></tr></tbody></table><p>
                Gets a child property of child.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-items-at"></a><h3>goocanvas.Item.get_items_at</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_items_at</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>x</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>y</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>is_pointer_event</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>parent_is_visible</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>x</code></strong> :</span></p></td><td>The x coordinate of the point.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>y</code></strong> :</span></p></td><td>The y coordinate of the point.</td></tr><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"><strong class="parameter"><code>is_pointer_event</code></strong> :</span></p></td><td>True if the "pointer-events" properties of items should be used
                                       to determine which parts of the item are tested.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>parent_is_visible</code></strong> :</span></p></td><td>True if the parent item is visible (which implies that all ancestors
                                       are also visible).</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>A list of items found at the given point, or None if no
                                       item was found.</td></tr></tbody></table><p>
                Gets the items at the given point.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-model"></a><h3>goocanvas.Item.get_model</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_model</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 canvas model, or None of 
                            the item isn't in a model.</td></tr></tbody></table><p>
                Gets the model of the canvas item.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-n-children"></a><h3>goocanvas.Item.get_n_children</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_n_children</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 number of children.</td></tr></tbody></table><p>
                Gets the number of children of the container.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-parent"></a><h3>goocanvas.Item.get_parent</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_parent</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 item, or None if the 
                            item has no parent.</td></tr></tbody></table><p>
                Gets the parent of the given item.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-requested-area"></a><h3>goocanvas.Item.get_requested_area</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_requested_area</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>A <code class="classname">goocanvas.Bounds
                    </code> containing the requested area.</td></tr></tbody></table><p>
                This function is only intended to be used when implementing new canvas items, specifically layout items such as
                <a class="link" href="class-canvas-table.html" title="goocanvas.Table"><code class="classname">goocanvas.Table</code></a>.
                It gets the requested area of a child item.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-requested-height"></a><h3>goocanvas.Item.get_requested_height</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_requested_height</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>width</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"><strong class="parameter"><code>width</code></strong> :</span></p></td><td>The width that the item may be allocated.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>The requested height of the item, given the allocated width,
                    or -1 if the item doesn't support this method or its height doesn't change when
                    allocated different widths.</td></tr></tbody></table><p>
                This function is only intended to be used when implementing new canvas items,
                specifically layout items such as
                <a class="link" href="class-canvas-table.html" title="goocanvas.Table"><code class="classname">goocanvas.Table</code></a>.
            </p><p>
                It gets the requested height of a child item, assuming it is allocated the given width.
                This is useful for text items whose requested height may change depending on the allocated width.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-style"></a><h3>goocanvas.Item.get_style</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_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>The item's style.</td></tr></tbody></table><p>
                Gets the item's style. If the item doesn't have its own style it will return its parent's style.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-simple-transform"></a><h3>goocanvas.Item.get_simple_transform</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_simple_transform</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 4 item tuple containing the item's x, y, scale and rotation.</td></tr></tbody></table><p>
                This function can be used to get the position, scale and rotation of an item, providing that
                the item has a simple transformation matrix (e.g. set with
                <code class="methodname"><a class="link" href="class-canvas-item.html#method-goocanvasitem--set-simple-transform" title="goocanvas.Item.set_simple_transform">goocanvas.Item.set_simple_transform</a></code>(),
                or using a combination of simple translate, scale and rotate operations).
                If the item has a complex transformation matrix the results will be incorrect.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-transform"></a><h3>goocanvas.Item.get_transform</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_transform</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 item's transformation matrix.</td></tr></tbody></table><p>
                Gets the transformation matrix of an item.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--get-transform-for-child"></a><h3>goocanvas.Item.get_transform_for_child</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">get_transform_for_child</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</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>child</code></strong> :</span></p></td><td>A child of item.</td></tr><tr><td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td><td>The transformation matrix or None</td></tr></tbody></table><p>
                Gets the transformation matrix of an item combined with any special transform needed for the given child.
                These special transforms are used by layout items such as
                <a class="link" href="class-canvas-table.html" title="goocanvas.Table"><code class="classname">goocanvas.Table</code></a>.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--is-container"></a><h3>goocanvas.Item.is_container</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">is_container</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>True if the item is a container.</td></tr></tbody></table><p>
                Tests to see if the given item is a container.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--is-visible"></a><h3>goocanvas.Item.is_visible</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">is_visible</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>True if the item is visible.</td></tr></tbody></table><p>
                Tests to see if the given item is visible.
            </p><p>
                This entails checking the item's own visibility setting, as well as those of its ancestors.
            </p><p>
                Note that the item may be scrolled off the screen and so may not be actually visible to the user.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--lower"></a><h3>goocanvas.Item.lower</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">lower</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>below</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>below</code></strong> :</span></p></td><td>the item to lower item below, 
                            or None to lower item to the bottom of the stack.</td></tr></tbody></table><p>
                Lowers an item in the stacking order.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--move-child"></a><h3>goocanvas.Item.move_child</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">move_child</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>old_position</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>new_position</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>old_position</code></strong> :</span></p></td><td>the current position of the child item.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>new_position</code></strong> :</span></p></td><td>the new position of the child item.</td></tr></tbody></table><p>
                Moves a child item to a new stack position within the container.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--paint"></a><h3>goocanvas.Item.paint</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">paint</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>cr</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>bounds</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>scale</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"><strong class="parameter"><code>bounds</code></strong> :</span></p></td><td>The bounds that need to be repainted.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>scale</code></strong> :</span></p></td><td>the scale to use to determine whether an item should be painted.
                    See <a class="link" href="class-canvas-item.html#properties-goocanvasitem" title="goocanvas.Item Properties">visibility-thresold</a></td></tr></tbody></table><p>
                Moves a child item to a new stack position within the container.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--raise-"></a><h3>goocanvas.Item.raise_</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">raise_</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>above</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>above</code></strong> :</span></p></td><td>the item to raise item above, or 
                            NULL to raise item to the top of the stack.</td></tr></tbody></table><p>
                Raises an item in the stacking order.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--remove"></a><h3>goocanvas.Item.remove</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">remove</span>(<span class="methodparam"></span>)</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody></tbody></table><p>
                Removes an item from its parent. If the item is in a canvas it will be removed.
            </p><p>
                This would normally also result in the item being freed.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--remove-child"></a><h3>goocanvas.Item.remove_child</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">remove_child</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child_num</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>child_num</code></strong> :</span></p></td><td>the position of the child item to remove.</td></tr></tbody></table><p>
                Removes the child item at the given position.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--request-update"></a><h3>goocanvas.Item.request_update</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">request_update</span>()</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody></tbody></table><p>
                Requests that an update of the item is scheduled. It will be performed
                as soon as the application is idle, and before the canvas is redrawn.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--rotate"></a><h3>goocanvas.Item.rotate</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">rotate</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>degrees</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cx</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cy</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>degrees</code></strong> :</span></p></td><td>the clockwise angle of rotation.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>cx</code></strong> :</span></p></td><td>the x coordinate of the origin of the rotation.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>cy</code></strong> :</span></p></td><td>the y coordinate of the origin of the rotation.</td></tr></tbody></table><p>
                Rotates the item's coordinate system by the given amount, about the given origin.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--scale"></a><h3>goocanvas.Item.scale</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">scale</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>sx</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>sy</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>sx</code></strong> :</span></p></td><td>the amount to scale the horizontal axis.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>sy</code></strong> :</span></p></td><td>the amount to scale the vertical axis.</td></tr></tbody></table><p>
                Scales the item's coordinate system by the given amounts.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--set-canvas"></a><h3>goocanvas.Item.set_canvas</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">set_canvas</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>canvas</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>canvas</code></strong> :</span></p></td><td>A <a class="link" href="class-canvas.html" title="goocanvas.Canvas">goocanvas.Canvas</a></td></tr></tbody></table><p>
                Sets the canvas of the item.
            </p><p>
                This is only needed for setting the canvas of the root item, as the other items can
                get the canvas from their parents.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--set-child-properties"></a><h3>goocanvas.Item.set_child_properties</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">set_child_properties</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>properties</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>child</code></strong> :</span></p></td><td>A child <a class="link" href="class-canvas-item.html" title="goocanvas.Item">goocanvas.Item</a></td></tr><tr><td><p><span class="term"><strong class="parameter"><code>properties</code></strong> :</span></p></td><td>The properties to set as **kwargs</td></tr></tbody></table><p>
                Sets the values of one or more child properties of child.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--set-child-property"></a><h3>goocanvas.Item.set_child_property</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">set_child_property</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>child</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>property</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>child</code></strong> :</span></p></td><td>A child <a class="link" href="class-canvas-item.html" title="goocanvas.Item">goocanvas.Item</a></td></tr><tr><td><p><span class="term"><strong class="parameter"><code>property</code></strong> :</span></p></td><td>The property to set as string</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>varlistentry</code></strong> :</span></p></td><td>The value to set for the property.</td></tr></tbody></table><p>
                Sets a child property of <em class="parameter"><code>child</code></em>.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--set-model"></a><h3>goocanvas.Item.set_model</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">set_model</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>model</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>model</code></strong> :</span></p></td><td>A <a class="link" href="class-canvas-item-model.html" title="goocanvas.ItemModel">goocanvas.ItemModel</a></td></tr></tbody></table><p>
                Sets the model of the given canvas item.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--set-parent"></a><h3>goocanvas.Item.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 item.</td></tr></tbody></table><p>
                This method is only intended to be used when implementing new canvas items
                (specifically container items such as
                <a class="link" href="class-canvas-group.html" title="goocanvas.Group">goocanvas.Group</a>).
                It sets the parent of the child item. 
            </p><div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
                This method cannot be used to add an item to a group or to change
                the parent of an item. To do that use the "parent" property.
            </div></div><div class="refsect2"><a name="method-goocanvasitem--set-simple-transform"></a><h3>goocanvas.Item.set_simple_transform</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">set_simple_transform</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>x</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>y</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>scale</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>rotation</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>x</code></strong> :</span></p></td><td>The x coordinate of the origin of the item's coordinate space.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>y</code></strong> :</span></p></td><td>The x coordinate of the origin of the item's coordinate space.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>scale</code></strong> :</span></p></td><td>The scale of the item.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>rotation</code></strong> :</span></p></td><td>The clockwise rotation of the item, in degrees.</td></tr></tbody></table><p>
                A convenience function to set the item's transformation matrix.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--set-style"></a><h3>goocanvas.Item.set_style</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">set_style</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>style</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>style</code></strong> :</span></p></td><td>A <a class="link" href="class-canvas-style.html" title="goocanvas.Style">goocanvas.Style</a></td></tr></tbody></table><p>
                Sets the item's style, by copying the properties from the given style.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--set-transform"></a><h3>goocanvas.Item.set_transform</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">set_transform</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>matrix</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>matrix</code></strong> :</span></p></td><td>the new transformation matrix, or None to reset 
                            the transformation to the identity matrix.</td></tr></tbody></table><p>
                Sets the transformation matrix of an item.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--skew-x"></a><h3>goocanvas.Item.skew_x</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">skew_x</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>degrees</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cx</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cy</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>degrees</code></strong> :</span></p></td><td>the skew angle.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>cx</code></strong> :</span></p></td><td>the x coordinate of the origin of the skew transform.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>cy</code></strong> :</span></p></td><td>the y coordinate of the origin of the skew transform.</td></tr></tbody></table><p>
                Skews the item's coordinate system along the x axis by the given amount, about the given origin.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--skew-y"></a><h3>goocanvas.Item.skew_y</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">skew_y</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>degrees</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cx</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>cy</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>degrees</code></strong> :</span></p></td><td>the skew angle.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>cx</code></strong> :</span></p></td><td>the x coordinate of the origin of the skew transform.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>cy</code></strong> :</span></p></td><td>the y coordinate of the origin of the skew transform.</td></tr></tbody></table><p>
                Skews the item's coordinate system along the y axis by the given amount, about the given origin.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--stop-animation"></a><h3>goocanvas.Item.stop_animation</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">stop_animation</span>()</code></pre><table border="0" width="100%" bgcolor="#FFECCE"><col align="left" valign="top" width="0*"><tbody></tbody></table><p>
                Stops any current animation for the given item, leaving it at its current position.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--translate"></a><h3>goocanvas.Item.translate</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">translate</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>tx</code></strong></span></span>, <span class="methodparam"><span class="parameter"><strong class="parameter"><code>ty</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>tx</code></strong> :</span></p></td><td>the amount to move the origin in the horizontal direction.</td></tr><tr><td><p><span class="term"><strong class="parameter"><code>ty</code></strong> :</span></p></td><td>the amount to move the origin in the vertical direction.</td></tr></tbody></table><p>
                Translates the origin of the item's coordinate system by the given amounts.
            </p></div><div class="refsect2"><a name="method-goocanvasitem--update"></a><h3>goocanvas.Item.update</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">update</span>(<span class="methodparam"><span class="parameter"><strong class="parameter"><code>entire_tree</code></strong></span></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>entire_tree</code></strong> :</span></p></td><td>If the entire subtree should be updated.</td></tr><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>A <code class="classname">goocanvas.Bounds
                    </code> containing the requested area.</td></tr></tbody></table><p>
                This function is only intended to be used when implementing new canvas items, specifically layout items such as
                <a class="link" href="class-canvas-group.html" title="goocanvas.Group"><code class="classname">goocanvas.Group</code></a>.
                Updates the item, if needed, and any children, returning the bounding box.
            </p></div></div><div class="refsect1"><a name="idm2880"></a><h2>Signals</h2><div class="refsect2"><a name="signal-goocanvasitem--animation-finished"></a><h3>The "animation-finished" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>stopped</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>stopped</code></em> :</span></p></td><td>
                            if the animation was explicitly stopped. 
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr></tbody></table><p>
                The "animation-finished" signal is emitted when the item animation has finished.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--button-press-event"></a><h3>The "button-press-event" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>target_item</code></em> :</span></p></td><td>
                            The target of the event.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td><td>
                            The event data. The x and y fields contain the mouse position in the
                            item's coordinate space. The root_x and root_y fields contain the same
                            coordinates converted to the canvas coordinate space. 
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr></tbody></table><p>
                The "button-press-event" signal is emitted when a mouse button is pressed in an item.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--button-release-event"></a><h3>The "button-release-event" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>target_item</code></em> :</span></p></td><td>
                            The target of the event.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td><td>
                            The event data. The x and y fields contain the mouse position in the
                            item's coordinate space. The root_x and root_y fields contain the same
                            coordinates converted to the canvas coordinate space. 
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr></tbody></table><p>
                The "button-release-event" signal is emitted when a mouse button is released in an item.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--child-notify"></a><h3>The "child-notify" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>pspec</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>pspec</code></em> :</span></p></td><td>The GParamSpec of the changed child property.</td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr></tbody></table><p>
                The "child-notify" signal is emitted for each child property that has changed.
                The signal's detail holds the property name.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--enter-notify-event"></a><h3>The "enter-notify-events" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>target_item</code></em> :</span></p></td><td>
                            The target of the event.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td><td>
                            The event data. The x and y fields contain the mouse position in the
                            item's coordinate space. The root_x and root_y fields contain the same
                            coordinates converted to the canvas coordinate space. 
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr><tr><td><p><span class="term"><em class="parameter"><code>Returns</code></em> :</span></p></td><td>True to stop the signal emission, or False to let it continue.</td></tr></tbody></table><p>
                The "enter-notify-event" signal is emitted when the mouse enters an item.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--focus-in-event"></a><h3>The "focus-in-event" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>target_item</code></em> :</span></p></td><td>
                            The target of the event.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td><td>
                            The event data, with coordinates translated to canvas coordinates.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr><tr><td><p><span class="term"><em class="parameter"><code>Returns</code></em> :</span></p></td><td>True to stop the signal emission, or False to let it continue.</td></tr></tbody></table><p>
                The "focus-in-event" signal is emitted when the item receives the keyboard focus.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--focus-out-event"></a><h3>The "focus-out-event" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>target_item</code></em> :</span></p></td><td>
                            The target of the event.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td><td>
                            The event data, with coordinates translated to canvas coordinates.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr><tr><td><p><span class="term"><em class="parameter"><code>Returns</code></em> :</span></p></td><td>True to stop the signal emission, or False to let it continue.</td></tr></tbody></table><p>
                The "focus-out-event" signal is emitted when the item loses the keyboard focus.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--grab-broken-event"></a><h3>The "grab-broken-event" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>target_item</code></em> :</span></p></td><td>
                            The target of the event.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td><td>
                            The event data, with coordinates translated to canvas coordinates.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr><tr><td><p><span class="term"><em class="parameter"><code>Returns</code></em> :</span></p></td><td>True to stop the signal emission, or False to let it continue.</td></tr></tbody></table><p>
                The "grab-broken-event" signal is emitted when the item's keyboard or pointer grab was lost unexpectedly.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--key-press-event"></a><h3>The "key-press-event" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>target_item</code></em> :</span></p></td><td>
                            The target of the event.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td><td>
                            The event data, with coordinates translated to canvas coordinates.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr><tr><td><p><span class="term"><em class="parameter"><code>Returns</code></em> :</span></p></td><td>True to stop the signal emission, or False to let it continue.</td></tr></tbody></table><p>
                The "key-press-event" signal is emitted when a key is pressed and the item has the keyboard focus.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--key-release-event"></a><h3>The "key-release-event" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>target_item</code></em> :</span></p></td><td>
                            The target of the event.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td><td>
                            The event data, with coordinates translated to canvas coordinates.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr><tr><td><p><span class="term"><em class="parameter"><code>Returns</code></em> :</span></p></td><td>True to stop the signal emission, or False to let it continue.</td></tr></tbody></table><p>
                The "key-release-event" signal is emitted when a key is released and the item has the keyboard focus.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--leave-notify-event"></a><h3>The "leave-notify-event" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>target_item</code></em> :</span></p></td><td>
                            The target of the event.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td><td>
                            The event data. The x and y fields contain the mouse position in the
                            item's coordinate space. The root_x and root_y fields contain the same
                            coordinates converted to the canvas coordinate space. 
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr><tr><td><p><span class="term"><em class="parameter"><code>Returns</code></em> :</span></p></td><td>True to stop the signal emission, or False to let it continue.</td></tr></tbody></table><p>
                The "leave-notify-event" signal is emitted when the mouse leaves an item.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--motion-notify-event"></a><h3>The "motion-notify-event" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>target_item</code></em> :</span></p></td><td>
                            The target of the event.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td><td>
                            The event data. The x and y fields contain the mouse position in the
                            item's coordinate space. The root_x and root_y fields contain the same
                            coordinates converted to the canvas coordinate space. 
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr><tr><td><p><span class="term"><em class="parameter"><code>Returns</code></em> :</span></p></td><td>True to stop the signal emission, or False to let it continue.</td></tr></tbody></table><p>
                The "motion-notify-event" signal is emitted when the mouse moves within an item.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--query-tooltip"></a><h3>The "query-tooltip" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>x</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>y</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>keyboard_mode</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>tooltip</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>x</code></em> :</span></p></td><td>
                            the x coordinate of the mouse.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>y</code></em> :</span></p></td><td>
                            the y coordinate of the mouse.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>keyboard_mode</code></em> :</span></p></td><td>
                            <code class="literal">True</code> if the tooltip was triggered using the keyboard. 
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>tooltip</code></em> :</span></p></td><td>
                            a <code class="classname">gtk.Tooltip</code>
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr><tr><td><p><span class="term"><em class="parameter"><code>Returns</code></em> :</span></p></td><td>True to stop the signal emission, or False to let it continue.</td></tr></tbody></table><p>
                The "query-tooltip" signal is emitted when the mouse has paused over the
                item for a certain amount of time, or the tooltip was requested via the keyboard. 
            </p><p>
                Note that if keyboard_mode is <code class="literal">True</code>, the values of
                x and y are undefined and should not be used. 
            </p><p>
                If the item wants to display a tooltip it should update tooltip and return <code class="literal">True</code>.
            </p></div><div class="refsect2"><a name="signal-goocanvasitem--scroll-event"></a><h3>The "scroll-event" goocanvas.Item Signal</h3><pre class="programlisting"><code class="methodsynopsis">    def <span class="methodname">callback</span>(<span class="methodparam"><span class="parameter"><em class="parameter"><code>item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>target_item</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>event</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>user_param</code></em></span></span>, <span class="methodparam"><span class="parameter"><em class="parameter"><code>...</code></em></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"><em class="parameter"><code>item</code></em> :</span></p></td><td>
                            The <a class="link" href="class-canvas-item.html" title="goocanvas.Item"><code class="classname">goocanvas.Item</code></a> 
                            that received the signal.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>target_item</code></em> :</span></p></td><td>
                            The target of the event.
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>event</code></em> :</span></p></td><td>
                            	 The event data. The x and y fields contain the mouse position in the
                                 item's coordinate space. The root_x and root_y fields contain the same
                                 coordinates converted to the canvas coordinate space. 
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>user_param</code></em> :</span></p></td><td>the first user parameter (if any) specified
                            with the <a
href="../pygobject/class-gobject.html#method-gobject--connect"
><code class="methodname">connect</code>()</a>
                            method
                        </td></tr><tr><td><p><span class="term"><em class="parameter"><code>...</code></em> :</span></p></td><td>additional user parameters (if any)</td></tr><tr><td><p><span class="term"><em class="parameter"><code>Returns</code></em> :</span></p></td><td>True to stop the signal emission, or False to let it continue.</td></tr></tbody></table><p>
                The "scroll-event" signal is emitted when a button in the 4 to 7 range is pressed.
                Wheel mice are usually configured to generate button press events for buttons
                4 and 5 when the wheel is turned in an item.
            </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.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="class-canvas-item-simple.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">goocanvas.Canvas </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> goocanvas.ItemSimple</td></tr></table></div></body></html>

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