gfx: Make display lists serializable using serde.

This commit introduces the `serde` dependency, which we will use to
serialize messages going between processes in multiprocess Servo.

This also adds a new debugging flag, `-Z print-display-list-json`,
allowing the output of display list serialization to be visualized.
This will be useful for our experiments with alternate rasterizers.
This commit is contained in:
Patrick Walton 2015-07-08 16:15:23 -07:00
parent b6b95085fb
commit 6eacb0c995
30 changed files with 320 additions and 124 deletions

View file

@ -58,6 +58,7 @@ use script::layout_interface::{NewLayoutTaskInfo, Msg, Reflow, ReflowGoal, Reflo
use script::layout_interface::{ScriptLayoutChan, ScriptReflow, TrustedNodeAddress};
use script_traits::{ConstellationControlMsg, LayoutControlMsg, OpaqueScriptLayoutChannel};
use script_traits::{ScriptControlChan, StylesheetLoadResponder};
use serde::json;
use std::borrow::ToOwned;
use std::cell::Cell;
use std::collections::HashMap;
@ -907,6 +908,9 @@ impl LayoutTask {
println!("#### start printing display list.");
stacking_context.print("#".to_owned());
}
if opts::get().dump_display_list_json {
println!("{}", json::to_string_pretty(&stacking_context).unwrap());
}
rw_data.stacking_context = Some(stacking_context.clone());