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fix(timepicker): allowing better scroll on touchpads #6292 - 19.1 #15638

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fix(timepicker): allowing better scroll on touchpads #6292 - 19.1 #15638

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6614efd
fix(timepicker): allowing better scroll on touchpads #6292
ChronosSF Apr 1, 2025
baa759a
Merge branch '19.1.x' into sstoychev/touch-scroll-time-picker-191
ChronosSF Apr 8, 2025
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31 changes: 25 additions & 6 deletions projects/igniteui-angular/src/lib/time-picker/time-picker.directives.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,14 @@ export class IgxItemListDirective implements OnInit, OnDestroy {

public isActive: boolean;

private readonly SCROLL_THRESHOLD = 15;
private readonly PAN_THRESHOLD = 10;

/**
* accumulates wheel scrolls and triggers a change action above SCROLL_THRESHOLD
*/
private scrollAccumulator = 0;

constructor(
@Inject(IGX_TIME_PICKER_COMPONENT) public timePicker: IgxTimePickerBase,
private elementRef: ElementRef,
Expand Down Expand Up @@ -170,24 +178,35 @@ export class IgxItemListDirective implements OnInit, OnDestroy {
event.preventDefault();
event.stopPropagation();

const delta = event.deltaY;
if (delta !== 0) {
this.nextItem(delta);
this.scrollAccumulator += event.deltaY;
if (Math.abs(this.scrollAccumulator) > this.SCROLL_THRESHOLD) {
this.nextItem(this.scrollAccumulator);
this.scrollAccumulator = 0;
}
}

/**
* @hidden @internal
*/
public ngOnInit() {
const hammerOptions: HammerOptions = { recognizers: [[HammerGesturesManager.Hammer?.Pan, { direction: HammerGesturesManager.Hammer?.DIRECTION_VERTICAL, threshold: 10 }]] };
const hammerOptions: HammerOptions = {
recognizers: [
[
HammerGesturesManager.Hammer?.Pan,
{
direction: HammerGesturesManager.Hammer?.DIRECTION_VERTICAL,
threshold: this.PAN_THRESHOLD
}
]
]
};
this.touchManager.addEventListener(this.elementRef.nativeElement, 'pan', this.onPanMove, hammerOptions);
}

/**
* @hidden @internal
*/
public ngOnDestroy() {
public ngOnDestroy() {
this.touchManager.destroy();
}

Expand Down Expand Up @@ -355,7 +374,7 @@ export class IgxTimeItemDirective {
private getHourPart(date: Date): string {
const inputDateParts = DateTimeUtil.parseDateTimeFormat(this.timePicker.appliedFormat);
const hourPart = inputDateParts.find(element => element.type === 'hours');
const ampmPart = inputDateParts.find(element =>element.format.indexOf('a') !== -1 || element.format === 'tt');
const ampmPart = inputDateParts.find(element => element.format.indexOf('a') !== -1 || element.format === 'tt');
const hour = DateTimeUtil.getPartValue(date, hourPart, hourPart.format.length);
if (ampmPart) {
const ampm = DateTimeUtil.getPartValue(date, ampmPart, ampmPart.format.length);
Expand Down
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