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debounce rounding position on Marker #11167

Merged
merged 15 commits into from
Dec 17, 2021
Merged

debounce rounding position on Marker #11167

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0ae8f5e
debounce rounding position on Marker
malekeym Oct 22, 2021
309e14a
change _update Marker parameters to accepts delaySnap as a boolean
malekeym Nov 4, 2021
f0dd607
test(Marker): add Marker test for rounding _pos
malekeym Nov 6, 2021
dfb4113
test(Marker): add unit test for move and setLngLat
malekeym Nov 10, 2021
a74e3a9
fix: function Refs in move events
malekeym Nov 10, 2021
b2c7c41
fix(Marker): ignore _update when addTo called when map not changed
malekeym Nov 11, 2021
1d0dab6
fix(Marker): check test for moveend
malekeym Nov 11, 2021
4c2b83c
fix(Marker): moveend should happend Immediatly
malekeym Nov 11, 2021
1fc674a
fix(Marker): call Marker _update method on move event
malekeym Nov 12, 2021
4c08403
fix(Marker): use arrow function to access to Marker this
malekeym Nov 12, 2021
16fa227
Merge branch 'mapbox:main' into debounce-round-position
malekeym Dec 14, 2021
dc792c3
refactor: remove DOM.setTransform
malekeym Dec 14, 2021
9fefbd3
refactor(marker): split updateTransform to method
malekeym Dec 15, 2021
1c1281c
refactor: seperate methods
malekeym Dec 15, 2021
7895068
refactor(Marker): remove pos argument
malekeym Dec 17, 2021
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19 changes: 14 additions & 5 deletions src/ui/marker.js
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Original file line number Diff line number Diff line change
Expand Up @@ -81,6 +81,7 @@ export default class Marker extends Evented {
_rotationAlignment: string;
_originalTabIndex: ?string; // original tabindex of _element
_fadeTimer: ?TimeoutID;
_updateFrameId: number;

constructor(options?: Options, legacyOptions?: Options) {
super();
Expand Down Expand Up @@ -256,7 +257,7 @@ export default class Marker extends Evented {
this.remove();
this._map = map;
map.getCanvasContainer().appendChild(this._element);
map.on('move', this._update);
map.on('move', () => this._update(true));
map.on('moveend', this._update);
map.on('remove', this._clearFadeTimer);
map._addMarker(this);
Expand All @@ -282,7 +283,7 @@ export default class Marker extends Evented {
remove() {
if (this._map) {
this._map.off('click', this._onMapClick);
this._map.off('move', this._update);
this._map.off('move', () => this._update(true));
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This won't actually remove the listener that was added previously, because this is a different function. You need to pass the exact reference — e.g. by creating a separate _updateMoving that internally calls _update(true).

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Done!

this._map.off('moveend', this._update);
this._map.off('mousedown', this._addDragHandler);
this._map.off('touchstart', this._addDragHandler);
Expand Down Expand Up @@ -337,7 +338,7 @@ export default class Marker extends Evented {
this._lngLat = LngLat.convert(lnglat);
this._pos = null;
if (this._popup) this._popup.setLngLat(this._lngLat);
this._update();
this._update(true);
return this;
}

Expand Down Expand Up @@ -507,7 +508,8 @@ export default class Marker extends Evented {
position.y >= 0 && position.y < tr.height;
}

_update(e?: {type: 'move' | 'moveend'}) {
_update(delaySnap?: boolean) {
window.cancelAnimationFrame(this._updateFrameId);
if (!this._map) return;

if (this._map.transform.renderWorldCopies) {
Expand All @@ -533,7 +535,14 @@ export default class Marker extends Evented {
// because rounding the coordinates at every `move` event causes stuttered zooming
// we only round them when _update is called with `moveend` or when its called with
// no arguments (when the Marker is initialized or Marker#setLngLat is invoked).
if (!e || e.type === "moveend") {
if (delaySnap) {
this._updateFrameId = window.requestAnimationFrame(() => {
if (this._element && this._pos && this._anchor) {
this._pos = this._pos.round();
DOM.setTransform(this._element, `${anchorTranslate[this._anchor]} translate(${this._pos.x}px, ${this._pos.y}px) ${pitch} ${rotation}`);
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Nit: I wonder if we could deduplicate this long line of code that's duplicated below, but not a big deal.

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Yes, but I don't have any idea, do you have?

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Maybe seperate that line into something like:

function _updateDOM(){   DOM.setTransform(this._element, `${anchorTranslate[this._anchor]} translate(${this._pos.x}px, ${this._pos.y}px) ${pitch} ${rotation}`);}

If you move the pitch and location calculating code into this function, then it can live in the marker's scope.

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@malekeym malekeym Dec 15, 2021 •
edited

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I separate some methods, I appreciate reviewing changes and giving your feedback

}
});
} else {
this._pos = this._pos.round();
}

Expand Down
41 changes: 41 additions & 0 deletions test/unit/ui/marker.test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@ import {createMap as globalCreateMap} from '../../util/index.js';
import Marker from '../../../src/ui/marker.js';
import Popup from '../../../src/ui/popup.js';
import LngLat from '../../../src/geo/lng_lat.js';
import {Event} from '../../../src/util/evented.js';
import Point from '@mapbox/point-geometry';
import simulate from '../../util/simulate_interaction.js';

Expand Down Expand Up @@ -925,3 +926,43 @@ test('Marker and fog', (t) => {
});
});
});

test('Snap To Pixel', (t) => {
const map = createMap(t);
const marker = new Marker({draggable: true})
.setLngLat([1, 2])
.addTo(map);
t.test("Snap To Pixel immediately after initializing marker", (t) => {
t.same(marker._pos, marker._pos.round());
t.end();
});
t.test("Not Immediately Snap To Pixel After setLngLat", (t) => {
marker.setLngLat([2, 1]);
const pos = marker._pos;
setTimeout(() => {
t.notSame(marker._pos, pos);
t.same(marker._pos, pos.round());
t.end();
}, 100);
});
t.test("Not Immediately Snap To Pixel when Map move and Snap To Pixel on moveend", (t) => {
map.fire(new Event("move"));
t.notSame(marker._pos, marker._pos.round());
map.fire(new Event("moveend"));
window.requestAnimationFrame(() => {
t.same(marker._pos, marker._pos.round());
t.end();
});
});
t.test("Not Immediately Snap To Pixel when Map move and setLngLat", (t) => {
marker.setLngLat([1, 2]);
map.fire(new Event("move"));
t.notSame(marker._pos, marker._pos.round());
setTimeout(() => {
t.same(marker._pos, marker._pos.round());
t.end();
}, 100);
});
map.remove();
t.end();
});