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54 lines
2.0 KiB
XML
54 lines
2.0 KiB
XML
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<part id="clutter-overview">
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<partinfo>
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<author>
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<firstname>Emmanuele</firstname>
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<surname>Bassi</surname>
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<affiliation>
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<address>
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<email>ebassi@openedhand.com</email>
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</address>
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</affiliation>
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</author>
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</partinfo>
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<title>Overview</title>
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<partintro>
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<para>Clutter is a GObject based library for creating fast, visually
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rich, graphical user interfaces.</para>
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<para>Clutter works by manipulating a scene-graph of 2D surfaces, or
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'actors', inside a 3D space.</para>
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<para>#ClutterActor is the base class for such surfaces. All
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#ClutterActor<!-- -->s can be positioned, scaled and rotated in 3D space.
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In addition, other properties can be set, such as 2D clipping, children and
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opacity. Tranforms applied to a parent actor also apply to any children.
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Actors are also able to receive events.</para>
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<para>Subclasses of #ClutterActor include #ClutterStage, #ClutterTexture,
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#ClutterLabel, #ClutterRectangle, #ClutterEntry and
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#ClutterGroup. #ClutterActor<!-- -->s are added to a parent, transformed
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and then made visible.</para>
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<para>#ClutterStage is the top level #ClutterActor - it's the
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representation of a window, or framebuffer. It is created automatically
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when Clutter is initialised. #ClutterStage is a #ClutterGroup, a class
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implementing the #ClutterCointainer interface.</para>
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<para>#ClutterTimeline<!-- -->s provide the basis for Clutter's animation
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utilities. Multiple timelines can be synchronised using #ClutterScore,
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and #ClutterBehaviour and #ClutterEffect allow for the creation of
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animation effects such as transitions.</para>
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<para>Clutter further contains a number of utilities, including;
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#ClutterScript - for loading 'UI definition' files formatted in
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<ulink type="http" url="http://json.org">JSON</ulink>, #ClutterShader - a
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class for applying GPU shaders to actors, #ClutterModel - a utility class
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for MVC list type implementations, and fixed point math utilities.</para>
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</partintro>
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</part>
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