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Remove delayed wheel timer 

This isn't really expected behaviour from a user, i.e. that an extremely
small wheel movement still gives a large scroll event in the remote application.
This commit is contained in:
Pierre Ossman 2020-06-10 12:55:27 +02:00 committed by Samuel Mannehed
parent 07a69954b1
commit 77c32d164d
2 changed files with 0 additions and 44 deletions
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22
core/input/mouse.js
View File

@ -8,7 +8,6 @@ import * as Log from '../util/logging.js';
import { setCapture, stopEvent, getPointerEvent } from '../util/events.js';
const WHEEL_STEP = 10; // Delta threshold for a mouse wheel step
const WHEEL_STEP_TIMEOUT = 50; // ms
const WHEEL_LINE_HEIGHT = 19;
export default class Mouse {
@ -16,8 +15,6 @@ export default class Mouse {
this._target = target || document;
this._pos = null;
this._wheelStepXTimer = null;
this._wheelStepYTimer = null;
this._accumulatedWheelDeltaX = 0;
this._accumulatedWheelDeltaY = 0;
@ -102,16 +99,7 @@ export default class Mouse {
this._accumulatedWheelDeltaY = 0;
}
_resetWheelStepTimers() {
window.clearTimeout(this._wheelStepXTimer);
window.clearTimeout(this._wheelStepYTimer);
this._wheelStepXTimer = null;
this._wheelStepYTimer = null;
}
_handleMouseWheel(e) {
this._resetWheelStepTimers();
this._updateMousePosition(e);
let dX = e.deltaX;
@ -136,17 +124,9 @@ export default class Mouse {
// after a timeout.
if (Math.abs(this._accumulatedWheelDeltaX) > WHEEL_STEP) {
this._generateWheelStepX();
} else {
this._wheelStepXTimer =
window.setTimeout(this._generateWheelStepX.bind(this),
WHEEL_STEP_TIMEOUT);
}
if (Math.abs(this._accumulatedWheelDeltaY) > WHEEL_STEP) {
this._generateWheelStepY();
} else {
this._wheelStepYTimer =
window.setTimeout(this._generateWheelStepY.bind(this),
WHEEL_STEP_TIMEOUT);
}
stopEvent(e);
@ -214,8 +194,6 @@ export default class Mouse {
ungrab() {
const t = this._target;
this._resetWheelStepTimers();
t.removeEventListener('mousedown', this._eventHandlers.mousedown);
t.removeEventListener('mouseup', this._eventHandlers.mouseup);
t.removeEventListener('mousemove', this._eventHandlers.mousemove);

22
tests/test.mouse.js
View File

@ -90,9 +90,6 @@ describe('Mouse Event Handling', function () {
describe('Accumulate mouse wheel events with small delta', function () {
beforeEach(function () { this.clock = sinon.useFakeTimers(); });
afterEach(function () { this.clock.restore(); });
it('should accumulate wheel events if small enough', function () {
const mouse = new Mouse(target);
mouse.onmousebutton = sinon.spy();
@ -100,7 +97,6 @@ describe('Mouse Event Handling', function () {
mouse._handleMouseWheel(mouseevent(
'mousewheel', { clientX: 18, clientY: 40,
deltaX: 4, deltaY: 0, deltaMode: 0 }));
this.clock.tick(10);
mouse._handleMouseWheel(mouseevent(
'mousewheel', { clientX: 18, clientY: 40,
deltaX: 4, deltaY: 0, deltaMode: 0 }));
@ -108,14 +104,12 @@ describe('Mouse Event Handling', function () {
// threshold is 10
expect(mouse._accumulatedWheelDeltaX).to.be.equal(8);
this.clock.tick(10);
mouse._handleMouseWheel(mouseevent(
'mousewheel', { clientX: 18, clientY: 40,
deltaX: 4, deltaY: 0, deltaMode: 0 }));
expect(mouse.onmousebutton).to.have.callCount(2); // mouse down and up
this.clock.tick(10);
mouse._handleMouseWheel(mouseevent(
'mousewheel', { clientX: 18, clientY: 40,
deltaX: 4, deltaY: 9, deltaMode: 0 }));
@ -133,11 +127,9 @@ describe('Mouse Event Handling', function () {
mouse._handleMouseWheel(mouseevent(
'mousewheel', { clientX: 18, clientY: 40,
deltaX: 11, deltaY: 0, deltaMode: 0 }));
this.clock.tick(10);
mouse._handleMouseWheel(mouseevent(
'mousewheel', { clientX: 18, clientY: 40,
deltaX: 0, deltaY: 70, deltaMode: 0 }));
this.clock.tick(10);
mouse._handleMouseWheel(mouseevent(
'mousewheel', { clientX: 18, clientY: 40,
deltaX: 400, deltaY: 400, deltaMode: 0 }));
@ -145,18 +137,6 @@ describe('Mouse Event Handling', function () {
expect(mouse.onmousebutton).to.have.callCount(8); // mouse down and up
});
it('should send even small wheel events after a timeout', function () {
const mouse = new Mouse(target);
mouse.onmousebutton = sinon.spy();
mouse._handleMouseWheel(mouseevent(
'mousewheel', { clientX: 18, clientY: 40,
deltaX: 1, deltaY: 0, deltaMode: 0 }));
this.clock.tick(51); // timeout on 50 ms
expect(mouse.onmousebutton).to.have.callCount(2); // mouse down and up
});
it('should account for non-zero deltaMode', function () {
const mouse = new Mouse(target);
mouse.onmousebutton = sinon.spy();
@ -165,8 +145,6 @@ describe('Mouse Event Handling', function () {
'mousewheel', { clientX: 18, clientY: 40,
deltaX: 0, deltaY: 2, deltaMode: 1 }));
this.clock.tick(10);
mouse._handleMouseWheel(mouseevent(
'mousewheel', { clientX: 18, clientY: 40,
deltaX: 1, deltaY: 0, deltaMode: 2 }));