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Platform/GFX/APZ: Difference between revisions
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→Interactions with other components
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The APZ interacts with the following other platform components: | The APZ interacts with the following other platform components: | ||
=== Compositor === | |||
The '''compositor''' creates and stores the APZCTreeManager, and interacts with it in the following ways: | |||
* When the compositor receives an update to the layer tree, it propagates this update to the APZCTreeManager by calling APZCTreeManager::UpdatePanZoomControllerTree(). This function updates the tree of APZCs to reflect the tree of scrollable layers in the updated layer tree. | |||
* Every time the compositor composites a frame, it queries each APZC for its current async transform (see AsyncPanZoomController::SampleContentTransformForFrame()). The APZC modifies this transform as the user pans and zooms. | |||
* APZCs can schedule a composite by calling CompositorParent::ScheduleRenderOnCompositorThread(). | |||
=== Widget code === | === Widget code === | ||
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The widget code interacts with the APZ in the following ways: | The widget code interacts with the APZ in the following ways: | ||
=== Gecko === | === Gecko === | ||