style: Add a new Timer structure to the shared style context, and basic infrastructure for controlling animations.

This commit is contained in:
Emilio Cobos Álvarez 2016-07-09 22:43:52 -07:00
parent 2e68821014
commit 0b67b218d0
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GPG key ID: 056B727BB9C1027C
20 changed files with 178 additions and 26 deletions

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@ -20,7 +20,7 @@ use selectors::matching::DeclarationBlock;
use std::sync::Arc;
use std::sync::mpsc::Sender;
use string_cache::Atom;
use time;
use timer::Timer;
use values::computed::Time;
/// This structure represents a keyframes animation current iteration state.
@ -122,7 +122,9 @@ impl KeyframesAnimationState {
///
/// There are some bits of state we can't just replace, over all taking in
/// account times, so here's that logic.
pub fn update_from_other(&mut self, other: &Self) {
pub fn update_from_other(&mut self,
other: &Self,
timer: &Timer) {
use self::KeyframesRunningState::*;
debug!("KeyframesAnimationState::update_from_other({:?}, {:?})", self, other);
@ -146,11 +148,11 @@ impl KeyframesAnimationState {
// If we're pausing the animation, compute the progress value.
match (&mut self.running_state, old_running_state) {
(&mut Running, Paused(progress))
=> new_started_at = time::precise_time_s() - (self.duration * progress),
=> new_started_at = timer.seconds() - (self.duration * progress),
(&mut Paused(ref mut new), Paused(old))
=> *new = old,
(&mut Paused(ref mut progress), Running)
=> *progress = (time::precise_time_s() - old_started_at) / old_duration,
=> *progress = (timer.seconds() - old_started_at) / old_duration,
_ => {},
}
@ -341,7 +343,8 @@ impl PropertyAnimation {
pub fn start_transitions_if_applicable(new_animations_sender: &Sender<Animation>,
node: OpaqueNode,
old_style: &ComputedValues,
new_style: &mut Arc<ComputedValues>)
new_style: &mut Arc<ComputedValues>,
timer: &Timer)
-> bool {
let mut had_animations = false;
for i in 0..new_style.get_box().transition_property_count() {
@ -355,7 +358,7 @@ pub fn start_transitions_if_applicable(new_animations_sender: &Sender<Animation>
// Kick off the animation.
let box_style = new_style.get_box();
let now = time::precise_time_s();
let now = timer.seconds();
let start_time =
now + (box_style.transition_delay_mod(i).seconds() as f64);
new_animations_sender
@ -424,7 +427,7 @@ pub fn maybe_start_animations(context: &SharedStyleContext,
}
let delay = box_style.animation_delay_mod(i).seconds();
let now = time::precise_time_s();
let now = context.timer.seconds();
let animation_start = now + delay as f64;
let duration = box_style.animation_duration_mod(i).seconds();
let iteration_state = match box_style.animation_iteration_count_mod(i) {
@ -497,7 +500,7 @@ where Damage: TRestyleDamage {
match *animation {
Animation::Transition(_, start_time, ref frame, _) => {
debug!("update_style_for_animation: transition found");
let now = time::precise_time_s();
let now = context.timer.seconds();
let mut new_style = (*style).clone();
let updated_style = update_style_for_animation_frame(&mut new_style,
now, start_time,
@ -516,7 +519,7 @@ where Damage: TRestyleDamage {
let started_at = state.started_at;
let now = match state.running_state {
KeyframesRunningState::Running => time::precise_time_s(),
KeyframesRunningState::Running => context.timer.seconds(),
KeyframesRunningState::Paused(progress) => started_at + duration * progress,
};