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Refactor layout_task a little

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This commit is contained in:
Brian Anderson 2012-10-14 00:42:25 -07:00
parent ad937a6167
commit e6c8ee9913
1 changed files with 94 additions and 86 deletions
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82
src/servo/layout/layout_task.rs
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@ -85,38 +85,6 @@ fn Layout(render_task: RenderTask,
impl Layout {
fn handle_query(query: LayoutQuery,
reply_chan: comm::Chan<LayoutQueryResponse>) {
match query {
ContentBox(node) => {
// TODO: extract me to a method when I get sibling arms
let response = match node.aux(|a| copy *a).flow {
None => Err(()),
Some(flow) => {
let start_val : Option<Rect<au>> = None;
let rect = do flow.foldl_boxes_for_node(node, start_val) |acc, box| {
match acc {
Some(acc) => Some(acc.union(&box.content_box())),
None => Some(box.content_box())
}
};
match rect {
None => Err(()),
Some(rect) => {
let size = Size2D(au::to_px(rect.size.width),
au::to_px(rect.size.height));
Ok(ContentSize(move size))
}
}
}
};
reply_chan.send(response)
}
}
}
fn start() {
while self.handle_request() {
// loop indefinitely
@ -126,12 +94,23 @@ impl Layout {
fn handle_request() -> bool {
match self.from_content.recv() {
BuildMsg(move node, move styles, move doc_url,
move to_content, move window_size, move join_chan) => {
self.handle_build(node, styles, doc_url, to_content, window_size, join_chan);
}
QueryMsg(query, chan) => self.handle_query(query, chan),
ExitMsg => {
debug!("layout: ExitMsg received");
return false
},
BuildMsg(node, styles, doc_url, to_content, window_size, join_chan) => {
}
}
true
}
fn handle_build(node: Node, styles: ARC<Stylesheet>, doc_url: Url,
to_content: comm::Chan<Event>, window_size: Size2D<uint>,
join_chan: pipes::Chan<()>) {
debug!("layout: received layout request for: %s", doc_url.to_str());
debug!("layout: parsed Node tree");
debug!("%?", node.dump());
@ -197,10 +176,39 @@ impl Layout {
// Tell content we're done
join_chan.send(());
} // BuildMsg
} // match
}
true
fn handle_query(query: LayoutQuery,
reply_chan: comm::Chan<LayoutQueryResponse>) {
match query {
ContentBox(node) => {
// TODO: extract me to a method when I get sibling arms
let response = match node.aux(|a| copy *a).flow {
None => Err(()),
Some(flow) => {
let start_val : Option<Rect<au>> = None;
let rect = do flow.foldl_boxes_for_node(node, start_val) |acc, box| {
match acc {
Some(acc) => Some(acc.union(&box.content_box())),
None => Some(box.content_box())
}
};
match rect {
None => Err(()),
Some(rect) => {
let size = Size2D(au::to_px(rect.size.width),
au::to_px(rect.size.height));
Ok(ContentSize(move size))
}
}
}
};
reply_chan.send(response)
}
}
}
// When images can't be loaded in time to display they trigger