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Use a new id type for tracking scrolling areas

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This is a step in disassociating scrolling areas from stacking
contexts. Now scroll areas are defined by unique ids, which means that
in the future stacking context will be able to contain more than one.
This commit is contained in:
Martin Robinson 2016-10-21 08:03:01 +02:00
parent fbec79e920
commit 71d285af80
22 changed files with 242 additions and 92 deletions
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13
components/layout/multicol.rs
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@ -17,6 +17,7 @@ use flow::{Flow, FlowClass, OpaqueFlow, mut_base, FragmentationContext};
use flow_ref::{self, FlowRef};
use fragment::{Fragment, FragmentBorderBoxIterator, Overflow};
use gfx::display_list::StackingContext;
use gfx_traits::ScrollRootId;
use gfx_traits::print_tree::PrintTree;
use std::cmp::{min, max};
use std::fmt;
@ -185,8 +186,10 @@ impl Flow for MulticolFlow {
self.block_flow.build_display_list(state);
}
fn collect_stacking_contexts(&mut self, parent: &mut StackingContext) {
self.block_flow.collect_stacking_contexts(parent);
fn collect_stacking_contexts(&mut self,
parent: &mut StackingContext,
parent_scroll_root_id: ScrollRootId) {
self.block_flow.collect_stacking_contexts(parent, parent_scroll_root_id);
}
fn repair_style(&mut self, new_style: &Arc<ServoComputedValues>) {
@ -267,8 +270,10 @@ impl Flow for MulticolColumnFlow {
self.block_flow.build_display_list(state);
}
fn collect_stacking_contexts(&mut self, parent: &mut StackingContext) {
self.block_flow.collect_stacking_contexts(parent);
fn collect_stacking_contexts(&mut self,
parent: &mut StackingContext,
parent_scroll_root_id: ScrollRootId) {
self.block_flow.collect_stacking_contexts(parent, parent_scroll_root_id);
}
fn repair_style(&mut self, new_style: &Arc<ServoComputedValues>) {