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Simplify the display list slightly

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Now that WebRender uses an Iframe display item, we do not need the Noop
item for the non-WebRender path. We can simply reuse the Iframe display
item. Also remove the layer_id member from the LayeredItem struct, as
it is unused.
This commit is contained in:
Martin Robinson 2016-03-10 14:33:22 -08:00
parent e8aeebbac5
commit 474033c39f
3 changed files with 14 additions and 29 deletions
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7
components/gfx/display_list/mod.rs
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@ -744,7 +744,6 @@ pub enum DisplayItem {
LineClass(Box<LineDisplayItem>),
BoxShadowClass(Box<BoxShadowDisplayItem>),
LayeredItemClass(Box<LayeredItem>),
NoopClass(Box<BaseDisplayItem>),
IframeClass(Box<IframeDisplayItem>),
}
@ -1168,9 +1167,6 @@ pub struct LayeredItem {
/// Fields common to all display items.
pub item: DisplayItem,
/// The id of the layer this item belongs to.
pub layer_id: LayerId,
/// The id of the layer this item belongs to.
pub layer_info: LayerInfo,
}
@ -1251,7 +1247,6 @@ impl DisplayItem {
DisplayItem::LayeredItemClass(ref item) => item.item.draw_into_context(paint_context),
DisplayItem::NoopClass(_) => { }
DisplayItem::IframeClass(..) => {}
}
}
@ -1280,7 +1275,6 @@ impl DisplayItem {
DisplayItem::LineClass(ref line) => &line.base,
DisplayItem::BoxShadowClass(ref box_shadow) => &box_shadow.base,
DisplayItem::LayeredItemClass(ref layered_item) => layered_item.item.base(),
DisplayItem::NoopClass(ref base_item) => base_item,
DisplayItem::IframeClass(ref iframe) => &iframe.base,
}
}
@ -1364,7 +1358,6 @@ impl fmt::Debug for DisplayItem {
DisplayItem::BoxShadowClass(_) => "BoxShadow".to_owned(),
DisplayItem::LayeredItemClass(ref layered_item) =>
format!("LayeredItem({:?})", layered_item.item),
DisplayItem::NoopClass(_) => "Noop".to_owned(),
DisplayItem::IframeClass(_) => "Iframe".to_owned(),
},
self.bounds(),