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Change StyleMethods::style to return a region pointer instead of copying the style object

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This commit is contained in:
Brian Anderson 2012-10-31 14:27:40 -07:00
parent b00885f77a
commit c0350e7739
2 changed files with 7 additions and 6 deletions
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11
src/servo/css/styles.rs
View file

@ -105,7 +105,7 @@ fn empty_style_for_node_kind(kind: &NodeKind) -> SpecifiedStyle {
trait StyleMethods {
fn initialize_layout_data() -> Option<@LayoutData>;
fn style() -> SpecifiedStyle;
fn style() -> &self/SpecifiedStyle;
fn initialize_style_for_subtree(ctx: &LayoutContext, refs: &DVec<@LayoutData>);
fn recompute_style_for_subtree(ctx: &LayoutContext, styles : &SelectCtx);
}
@ -129,15 +129,16 @@ impl Node : StyleMethods {
}
/**
* Returns the computed style for the given node. If CSS selector
* Provides the computed style for the given node. If CSS selector
* matching has not yet been performed, fails.
* FIXME: This isn't completely memory safe since the style is
* stored in a box that can be overwritten
*/
fn style() -> SpecifiedStyle {
fn style() -> &self/SpecifiedStyle {
if !self.has_aux() {
fail ~"get_style() called on a node without a style!";
}
// TODO: return a safe reference; don't copy!
return copy *self.aux(|x| copy *x).style;
unsafe { &*self.aux( |x| ptr::to_unsafe_ptr(&*x.style) ) }
}
/**

2
src/servo/layout/box.rs
View file

@ -457,7 +457,7 @@ impl RenderBox : RenderBoxMethods {
fn add_border_to_list(list: &mut DisplayList, abs_bounds: &Rect<Au>) {
let style = self.d().node.style();
match style.border_width {
Specified(Px(px)) => {
Specified(Px(copy px)) => {
// If there's a border, let's try to display *something*
let border_width = au::from_frac_px(px);
let abs_bounds = Rect {