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Rename PushScrollRoot and remove PopScrollRoot

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PopScrollRoot was unused and PushScrollRoot no longer pushes a scroll
root, but defines a new one.
This commit is contained in:
Martin Robinson 2017-05-03 10:39:41 +02:00
parent 8187969c39
commit 83ac0a8505
3 changed files with 14 additions and 22 deletions
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29
components/gfx/display_list/mod.rs
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@ -86,7 +86,7 @@ impl DisplayList {
scroll_offsets,
result);
}
&DisplayItem::PushScrollRoot(ref item) => {
&DisplayItem::DefineClip(ref item) => {
let mut point = *translated_point;
DisplayList::scroll_root(&item.scroll_root,
&mut point,
@ -149,7 +149,7 @@ impl DisplayList {
scroll_offsets,
result);
}
&DisplayItem::PushScrollRoot(ref item) => {
&DisplayItem::DefineClip(ref item) => {
let mut point = *translated_point;
DisplayList::scroll_root(&item.scroll_root,
&mut point,
@ -160,7 +160,7 @@ impl DisplayList {
scroll_offsets,
result);
}
&DisplayItem::PopStackingContext(_) | &DisplayItem::PopScrollRoot(_) => return,
&DisplayItem::PopStackingContext(_) => return,
_ => {
if let Some(meta) = item.hit_test(*translated_point) {
result.push(meta);
@ -510,8 +510,8 @@ pub struct ScrollRoot {
}
impl ScrollRoot {
pub fn to_push(&self, pipeline_id: PipelineId) -> DisplayItem {
DisplayItem::PushScrollRoot(box PushScrollRootItem {
pub fn to_define_item(&self, pipeline_id: PipelineId) -> DisplayItem {
DisplayItem::DefineClip(box DefineClipItem {
base: BaseDisplayItem::empty(pipeline_id),
scroll_root: self.clone(),
})
@ -534,8 +534,7 @@ pub enum DisplayItem {
Iframe(Box<IframeDisplayItem>),
PushStackingContext(Box<PushStackingContextItem>),
PopStackingContext(Box<PopStackingContextItem>),
PushScrollRoot(Box<PushScrollRootItem>),
PopScrollRoot(Box<BaseDisplayItem>),
DefineClip(Box<DefineClipItem>),
}
/// Information common to all display items.
@ -1123,7 +1122,7 @@ pub struct PopStackingContextItem {
/// Starts a group of items inside a particular scroll root.
#[derive(Clone, HeapSizeOf, Deserialize, Serialize)]
pub struct PushScrollRootItem {
pub struct DefineClipItem {
/// Fields common to all display items.
pub base: BaseDisplayItem,
@ -1159,8 +1158,7 @@ impl DisplayItem {
DisplayItem::Iframe(ref iframe) => &iframe.base,
DisplayItem::PushStackingContext(ref stacking_context) => &stacking_context.base,
DisplayItem::PopStackingContext(ref item) => &item.base,
DisplayItem::PushScrollRoot(ref item) => &item.base,
DisplayItem::PopScrollRoot(ref base) => &base,
DisplayItem::DefineClip(ref item) => &item.base,
}
}
@ -1246,12 +1244,8 @@ impl fmt::Debug for DisplayItem {
return write!(f, "PopStackingContext({:?}", item.stacking_context_id);
}
if let DisplayItem::PushScrollRoot(ref item) = *self {
return write!(f, "PushScrollRoot({:?}", item.scroll_root);
}
if let DisplayItem::PopScrollRoot(_) = *self {
return write!(f, "PopScrollRoot");
if let DisplayItem::DefineClip(ref item) = *self {
return write!(f, "DefineClip({:?}", item.scroll_root);
}
write!(f, "{} @ {:?} {:?}",
@ -1277,8 +1271,7 @@ impl fmt::Debug for DisplayItem {
DisplayItem::Iframe(_) => "Iframe".to_owned(),
DisplayItem::PushStackingContext(_) |
DisplayItem::PopStackingContext(_) |
DisplayItem::PushScrollRoot(_) |
DisplayItem::PopScrollRoot(_) => "".to_owned(),
DisplayItem::DefineClip(_) => "".to_owned(),
},
self.bounds(),
self.base().clip