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Fix root layer naming in the compositor

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The term "root layer" is used in the compositor to refer to both the
pipeline root layer and the page background layer. This can be quite
confusing. Instead, call the page background layer the "base layer,"
which is always the first child of the pipeline root layer.
This commit is contained in:
Martin Robinson 2015-01-06 12:30:01 -08:00
parent ad751e4926
commit 9ac759ed80
3 changed files with 15 additions and 15 deletions
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6
components/compositing/compositor_task.rs
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@ -147,7 +147,7 @@ impl PaintListener for Box<CompositorProxy+'static+Send> {
for metadata in metadata.iter() {
let layer_properties = LayerProperties::new(pipeline_id, epoch, metadata);
if first {
self.send(Msg::CreateOrUpdateRootLayer(layer_properties));
self.send(Msg::CreateOrUpdateBaseLayer(layer_properties));
first = false
} else {
self.send(Msg::CreateOrUpdateDescendantLayer(layer_properties));
@ -183,7 +183,7 @@ pub enum Msg {
/// Tells the compositor to create the root layer for a pipeline if necessary (i.e. if no layer
/// with that ID exists).
CreateOrUpdateRootLayer(LayerProperties),
CreateOrUpdateBaseLayer(LayerProperties),
/// Tells the compositor to create a descendant layer for a pipeline if necessary (i.e. if no
/// layer with that ID exists).
CreateOrUpdateDescendantLayer(LayerProperties),
@ -226,7 +226,7 @@ impl Show for Msg {
Msg::Exit(..) => write!(f, "Exit"),
Msg::ShutdownComplete(..) => write!(f, "ShutdownComplete"),
Msg::GetGraphicsMetadata(..) => write!(f, "GetGraphicsMetadata"),
Msg::CreateOrUpdateRootLayer(..) => write!(f, "CreateOrUpdateRootLayer"),
Msg::CreateOrUpdateBaseLayer(..) => write!(f, "CreateOrUpdateBaseLayer"),
Msg::CreateOrUpdateDescendantLayer(..) => write!(f, "CreateOrUpdateDescendantLayer"),
Msg::SetLayerOrigin(..) => write!(f, "SetLayerOrigin"),
Msg::ScrollFragmentPoint(..) => write!(f, "ScrollFragmentPoint"),