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<title>GooCanvas Reference Manual: Overview</title>
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<h2><span class="refentrytitle">Overview</span></h2>
<p>Overview — a quick tour of GooCanvas.</p>
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<div class="refsect1">
<a name="features"></a><h2>Features</h2>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>
Basic items - rect/ellipse/polyline/text/image/grid/group.
</p></li>
<li class="listitem"><p>
Path item, using SVG path specification strings.
</p></li>
<li class="listitem"><p>
Table item for layout of other items (similar to the GtkTable widget).
(This also supports items whose requested height changes according to
their allocated width, such as text items.)
</p></li>
<li class="listitem"><p>
Embedded GTK+ widgets.
</p></li>
<li class="listitem"><p>
Layers/stacking order with raise/lower functions.
</p></li>
<li class="listitem"><p>
Affine transformations for all items - rotations/scales/skews.
</p></li>
<li class="listitem"><p>
Event handling - button/motion events, "pointer-events" property like SVG.
</p></li>
<li class="listitem"><p>
Grabs - support for pointer and keyboard grabs.
</p></li>
<li class="listitem"><p>
Keyboard focus traversal.
</p></li>
<li class="listitem"><p>
Accessibility (item title and description properties and hierarchy stuff).
</p></li>
<li class="listitem"><p>
Printing (output to a given cairo_t).
</p></li>
<li class="listitem"><p>
Scrolling.
</p></li>
<li class="listitem"><p>
Zooming.
</p></li>
<li class="listitem"><p>
Static items that don't move as the canvas is scrolled or zoomed.
</p></li>
<li class="listitem"><p>
Item visibility setting - on/off/above zoom threshold.
</p></li>
<li class="listitem"><p>
Simple animation.
</p></li>
<li class="listitem"><p>
Scalable - support for thousands of items over a large canvas area.
</p></li>
<li class="listitem"><p>
Support for different units - pixels/points/inches/millimeters.
</p></li>
</ul></div>
<div class="refsect2">
<a name="deprecated-features"></a><h3>Features that may be removed in future to simplify the code</h3>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>
Optional model/view split.
</p></li>
<li class="listitem"><p>
Uses interfaces for items and views.
</p></li>
<li class="listitem"><p>
Cascading styles - line width/style/dashes, colors, fill patterns.
(The style properties will remain, but will not cascade.)
</p></li>
</ul></div>
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