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Force root flow's box size to coincide with the viewport if child

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flows have less combined height than the viewport height.

This makes Issue #218 go away in the case when the HTML element's
style specifies a background color.
This commit is contained in:
Brian J. Burg 2012-11-19 14:43:05 -08:00
parent 02e0734613
commit d76195757a
1 changed files with 20 additions and 3 deletions
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23
src/servo/layout/root.rs
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@ -48,20 +48,37 @@ impl FlowContext : RootLayout {
fn assign_widths_root(@self, ctx: &LayoutContext) {
assert self.starts_root_flow();
self.d().position = copy ctx.screen_size;
self.d().position.origin = Au::zero_point();
self.d().position.size.width = ctx.screen_size.size.width;
self.assign_widths_block(ctx)
}
fn assign_height_root(@self, ctx: &LayoutContext) {
assert self.starts_root_flow();
self.assign_height_block(ctx);
// this is essentially the same as assign_height_block(), except
// the root adjusts self height to at least cover the viewport.
let mut cur_y = Au(0);
for FlowTree.each_child(self) |child_ctx| {
child_ctx.d().position.origin.y = cur_y;
cur_y += child_ctx.d().position.size.height;
}
self.d().position.size.height = Au::max(ctx.screen_size.size.height, cur_y);
do self.with_block_box |box| {
box.d().position.origin.y = Au(0);
box.d().position.size.height = Au::max(ctx.screen_size.size.height, cur_y);
let (_used_top, _used_bot) = box.get_used_height();
}
}
fn build_display_list_root(@self, builder: &DisplayListBuilder, dirty: &Rect<Au>,
offset: &Point2D<Au>, list: &mut DisplayList) {
assert self.starts_root_flow();
self.build_display_list_block(builder, dirty, offset, list);
}
}