NPAPI:InvalidatingCoreAnimation: Difference between revisions
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= Status = | = Status = | ||
Accepted, ready for implementation. | |||
== Contributors == | == Contributors == | ||
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== Overview == | == Overview == | ||
The regular Core Animation drawing model (NPDrawingModelCoreAnimation) does not work well for browser that don't hook CA layers into a layer tree. Browsers that want to read and composite | The regular Core Animation drawing model (NPDrawingModelCoreAnimation) does not work well for browser that don't hook CA layers into a layer tree. Browsers that want to read and composite pixels need a way to know when a plugin's pixels should be updated in order to operate efficiently. Core Animation does not allow for this. | ||
== Negotiating Invalidating Core Animation == | == Negotiating Invalidating Core Animation == | ||
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== Drawing == | == Drawing == | ||
The Invalidating Core Animation model works much like the regular Core Animation model does. See [[ | The Invalidating Core Animation model works much like the regular Core Animation model does. See [[NPAPI:CoreAnimationDrawingModel|the regular Core Animation documentation]], which will not be duplicated here. The only difference is that when a plugin has updated its layer it must call NPN_InvalidateRect to let the browser know. | ||
Latest revision as of 03:08, 7 December 2010
Status
Accepted, ready for implementation.
Contributors
- Last modified: May 7, 2010
- Authors: Josh Aas (Mozilla Corporation)
- Contributors: Benoit Girard (Mozilla Corporation), Stuart Morgan (Google)
Overview
The regular Core Animation drawing model (NPDrawingModelCoreAnimation) does not work well for browser that don't hook CA layers into a layer tree. Browsers that want to read and composite pixels need a way to know when a plugin's pixels should be updated in order to operate efficiently. Core Animation does not allow for this.
Negotiating Invalidating Core Animation
For documentation on negotiating drawing models, see NPAPI:Models. The drawing model variables for Invalidating Core Animation are:
- NPDrawingModelInvalidatingCoreAnimation (NPDrawingModel = 4)
- NPNVsupportsInvalidatingCoreAnimationBool (NPNVariable = 2004)
Drawing
The Invalidating Core Animation model works much like the regular Core Animation model does. See the regular Core Animation documentation, which will not be duplicated here. The only difference is that when a plugin has updated its layer it must call NPN_InvalidateRect to let the browser know.