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iconGrid.js: Animate icon spring using translation

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Animating the icon spring using the `translation-x/y` properties instead
of the `x/y` properties avoids relayouts. There are still other non-icon
actors moving, but it's a big improvement.

Before: 595 relayouts per spring
After: 94 relayouts per spring

Reducing relayouts reduces reallocation, which reduces CPU-intensive
JavaScript execution.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/926
This commit is contained in:
Daniel van Vugt 2020-01-10 17:37:26 +08:00
parent 8064f4498e
commit 76961927d5
1 changed files with 7 additions and 7 deletions
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14
js/ui/iconGrid.js
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@ -557,14 +557,14 @@ var IconGrid = GObject.registerClass({
actorClone.opacity = 0;
actorClone.set_scale(scaleX, scaleY);
actorClone.set_position(adjustedSourcePositionX, adjustedSourcePositionY);
actorClone.set_translation(
adjustedSourcePositionX, adjustedSourcePositionY, 0);
let delay = (1 - (actor._distance - minDist) / normalization) * ANIMATION_MAX_DELAY_FOR_ITEM;
let [finalX, finalY] = actor._transformedPosition;
movementParams = {
x: finalX,
y: finalY,
translation_x: finalX,
translation_y: finalY,
scale_x: 1,
scale_y: 1,
duration: ANIMATION_TIME_IN,
@ -585,12 +585,12 @@ var IconGrid = GObject.registerClass({
let isLastItem = actor._distance == maxDist;
let [startX, startY] = actor._transformedPosition;
actorClone.set_position(startX, startY);
actorClone.set_translation(startX, startY, 0);
let delay = (actor._distance - minDist) / normalization * ANIMATION_MAX_DELAY_OUT_FOR_ITEM;
movementParams = {
x: adjustedSourcePositionX,
y: adjustedSourcePositionY,
translation_x: adjustedSourcePositionX,
translation_y: adjustedSourcePositionY,
scale_x: scaleX,
scale_y: scaleY,
duration: ANIMATION_TIME_OUT,