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Implements reflow events debugging.

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Start servo with -Z relayout-event and you should have
reflow events printed to the terminal.
This commit is contained in:
Adenilson Cavalcanti 2015-03-04 15:45:34 -08:00
parent 34289943e3
commit 618f56410d
4 changed files with 70 additions and 18 deletions
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58
components/script/dom/window.rs
View file

@ -41,6 +41,7 @@ use net::image_cache_task::ImageCacheTask;
use net::resource_task::ResourceTask;
use net::storage_task::StorageTask;
use util::geometry::{self, Au, MAX_RECT};
use util::opts;
use util::str::{DOMString,HTML_SPACE_CHARACTERS};
use geom::{Point2D, Rect, Size2D};
@ -63,6 +64,19 @@ use std::sync::mpsc::{channel, Receiver};
use std::sync::mpsc::TryRecvError::{Empty, Disconnected};
use time;
/// Extra information concerning the reason for reflowing.
pub enum ReflowReason {
CachedPageNeededReflow,
FirstLoad,
KeyEvent,
MouseEvent,
Query,
ReceivedReflowEvent,
Timer,
Viewport,
WindowResize,
}
#[dom_struct]
pub struct Window {
eventtarget: EventTarget,
@ -397,7 +411,7 @@ pub trait WindowHelpers {
fn init_browser_context(self, doc: JSRef<Document>, frame_element: Option<JSRef<Element>>);
fn load_url(self, href: DOMString);
fn handle_fire_timer(self, timer_id: TimerId);
fn reflow(self, goal: ReflowGoal, query_type: ReflowQueryType);
fn reflow(self, goal: ReflowGoal, query_type: ReflowQueryType, reason: ReflowReason);
fn join_layout(self);
fn layout(&self) -> &LayoutRPC;
fn content_box_query(self, content_box_request: TrustedNodeAddress) -> Rect<Au>;
@ -480,7 +494,7 @@ impl<'a> WindowHelpers for JSRef<'a, Window> {
/// yet, the page is presumed invisible and no reflow is performed.
///
/// TODO(pcwalton): Only wait for style recalc, since we have off-main-thread layout.
fn reflow(self, goal: ReflowGoal, query_type: ReflowQueryType) {
fn reflow(self, goal: ReflowGoal, query_type: ReflowQueryType, reason: ReflowReason) {
let document = self.Document().root();
let root = document.r().GetDocumentElement().root();
let root = match root.r() {
@ -511,6 +525,11 @@ impl<'a> WindowHelpers for JSRef<'a, Window> {
let window_size = self.window_size.get();
// On debug mode, print the reflow event information.
if opts::get().relayout_event {
debug_reflow_events(&goal, &query_type, &reason);
}
// Send new document and relevant styles to layout.
let reflow = box Reflow {
document_root: root.to_trusted_node_address(),
@ -562,14 +581,14 @@ impl<'a> WindowHelpers for JSRef<'a, Window> {
}
fn content_box_query(self, content_box_request: TrustedNodeAddress) -> Rect<Au> {
self.reflow(ReflowGoal::ForScriptQuery, ReflowQueryType::ContentBoxQuery(content_box_request));
self.reflow(ReflowGoal::ForScriptQuery, ReflowQueryType::ContentBoxQuery(content_box_request), ReflowReason::Query);
self.join_layout(); //FIXME: is this necessary, or is layout_rpc's mutex good enough?
let ContentBoxResponse(rect) = self.layout_rpc.content_box();
rect
}
fn content_boxes_query(self, content_boxes_request: TrustedNodeAddress) -> Vec<Rect<Au>> {
self.reflow(ReflowGoal::ForScriptQuery, ReflowQueryType::ContentBoxesQuery(content_boxes_request));
self.reflow(ReflowGoal::ForScriptQuery, ReflowQueryType::ContentBoxesQuery(content_boxes_request), ReflowReason::Query);
self.join_layout(); //FIXME: is this necessary, or is layout_rpc's mutex good enough?
let ContentBoxesResponse(rects) = self.layout_rpc.content_boxes();
rects
@ -609,7 +628,7 @@ impl<'a> WindowHelpers for JSRef<'a, Window> {
fn handle_fire_timer(self, timer_id: TimerId) {
self.timers.fire_timer(timer_id, self);
self.reflow(ReflowGoal::ForDisplay, ReflowQueryType::NoQuery);
self.reflow(ReflowGoal::ForDisplay, ReflowQueryType::NoQuery, ReflowReason::Timer);
}
fn set_fragment_name(self, fragment: Option<String>) {
@ -715,7 +734,6 @@ impl<'a> WindowHelpers for JSRef<'a, Window> {
fn freeze(self) {
self.timers.suspend();
}
}
impl Window {
@ -798,3 +816,31 @@ fn should_move_clip_rect(clip_rect: Rect<Au>, new_viewport: Rect<f32>) -> bool{
(clip_rect.origin.y - new_viewport.origin.y).abs() <= viewport_scroll_margin.height ||
(clip_rect.max_y() - new_viewport.max_y()).abs() <= viewport_scroll_margin.height
}
fn debug_reflow_events(goal: &ReflowGoal, query_type: &ReflowQueryType, reason: &ReflowReason) {
let mut debug_msg = String::from_str("****");
match *goal {
ReflowGoal::ForDisplay => debug_msg.push_str("\tForDisplay"),
ReflowGoal::ForScriptQuery => debug_msg.push_str("\tForScriptQuery"),
}
match *query_type {
ReflowQueryType::NoQuery => debug_msg.push_str("\tNoQuery"),
ReflowQueryType::ContentBoxQuery(_n) => debug_msg.push_str("\tContentBoxQuery"),
ReflowQueryType::ContentBoxesQuery(_n) => debug_msg.push_str("\tContentBoxesQuery"),
}
match *reason {
ReflowReason::CachedPageNeededReflow => debug_msg.push_str("\tCachedPageNeededReflow"),
ReflowReason::FirstLoad => debug_msg.push_str("\tFirstLoad"),
ReflowReason::KeyEvent => debug_msg.push_str("\tKeyEvent"),
ReflowReason::MouseEvent => debug_msg.push_str("\tMouseEvent"),
ReflowReason::Query => debug_msg.push_str("\tQuery"),
ReflowReason::ReceivedReflowEvent => debug_msg.push_str("\tReceivedReflowEvent"),
ReflowReason::Timer => debug_msg.push_str("\tTimer"),
ReflowReason::Viewport => debug_msg.push_str("\tViewport"),
ReflowReason::WindowResize => debug_msg.push_str("\tWindowResize"),
}
println!("{}", debug_msg);
}