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Don't redraw backgrounds that we've already drawn

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This commit is contained in:
Manish Goregaokar 2018-02-14 14:12:22 -08:00
parent db6ec58e6b
commit 5cd15eeb54
1 changed files with 11 additions and 4 deletions
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15
components/layout/table.rs
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@ -20,8 +20,7 @@ use gfx_traits::print_tree::PrintTree;
use layout_debug;
use model::{IntrinsicISizes, IntrinsicISizesContribution, MaybeAuto};
use servo_arc::Arc;
use std::cmp;
use std::fmt;
use std::{cmp, fmt, ptr};
use style::computed_values::{border_collapse, border_spacing, table_layout};
use style::context::SharedStyleContext;
use style::logical_geometry::LogicalSize;
@ -1074,12 +1073,20 @@ impl<'table> TableCellStyleInfo<'table> {
};
{
let cell_flow = &self.cell.block_flow;
let mut bg_ptr = ptr::null();
// XXXManishearth the color should be resolved relative to the style itself
// which we don't have here
let build_dl = |bg, state: &mut &mut DisplayListBuildState| {
let mut build_dl = |bg, state: &mut &mut DisplayListBuildState| {
// Don't redraw backgrounds that we've already drawn
if bg_ptr == bg as *const _ {
return;
}
cell_flow.build_display_list_for_background_if_applicable_with_background(
state, bg, table_style.resolve_color(bg.background_color)
)
);
bg_ptr = bg as *const _;
};