diff options
Diffstat (limited to 'src/client/util/InteractionUtils.ts')
| -rw-r--r-- | src/client/util/InteractionUtils.ts | 55 |
1 files changed, 49 insertions, 6 deletions
diff --git a/src/client/util/InteractionUtils.ts b/src/client/util/InteractionUtils.ts index 2e4e8c7ca..3e6d27242 100644 --- a/src/client/util/InteractionUtils.ts +++ b/src/client/util/InteractionUtils.ts @@ -8,12 +8,55 @@ export namespace InteractionUtils { const REACT_POINTER_PEN_BUTTON = 0; const ERASER_BUTTON = 5; - export function GetMyTargetTouches(e: TouchEvent | React.TouchEvent, prevPoints: Map<number, React.Touch>): React.Touch[] { + export class MultiTouchEvent<T extends React.TouchEvent | TouchEvent> { + constructor( + readonly fingers: number, + // readonly points: T extends React.TouchEvent ? React.TouchList : TouchList, + readonly targetTouches: T extends React.TouchEvent ? React.Touch[] : Touch[], + readonly touches: T extends React.TouchEvent ? React.Touch[] : Touch[], + readonly changedTouches: T extends React.TouchEvent ? React.Touch[] : Touch[], + readonly touchEvent: T extends React.TouchEvent ? React.TouchEvent : TouchEvent + ) { } + } + + export interface MultiTouchEventDisposer { (): void; } + + export function MakeMultiTouchTarget( + element: HTMLElement, + startFunc: (e: Event, me: MultiTouchEvent<React.TouchEvent>) => void, + ): MultiTouchEventDisposer { + const onMultiTouchStartHandler = (e: Event) => startFunc(e, (e as CustomEvent<MultiTouchEvent<React.TouchEvent>>).detail); + // const onMultiTouchMoveHandler = moveFunc ? (e: Event) => moveFunc(e, (e as CustomEvent<MultiTouchEvent<TouchEvent>>).detail) : undefined; + // const onMultiTouchEndHandler = endFunc ? (e: Event) => endFunc(e, (e as CustomEvent<MultiTouchEvent<TouchEvent>>).detail) : undefined; + element.addEventListener("dashOnTouchStart", onMultiTouchStartHandler); + // if (onMultiTouchMoveHandler) { + // element.addEventListener("dashOnTouchMove", onMultiTouchMoveHandler); + // } + // if (onMultiTouchEndHandler) { + // element.addEventListener("dashOnTouchEnd", onMultiTouchEndHandler); + // } + return () => { + element.removeEventListener("dashOnTouchStart", onMultiTouchStartHandler); + // if (onMultiTouchMoveHandler) { + // element.removeEventListener("dashOnTouchMove", onMultiTouchMoveHandler); + // } + // if (onMultiTouchEndHandler) { + // element.removeEventListener("dashOnTouchend", onMultiTouchEndHandler); + // } + }; + } + + export function GetMyTargetTouches(mte: InteractionUtils.MultiTouchEvent<React.TouchEvent | TouchEvent>, prevPoints: Map<number, React.Touch>, ignorePen: boolean): React.Touch[] { const myTouches = new Array<React.Touch>(); - for (let i = 0; i < e.targetTouches.length; i++) { - const pt = e.targetTouches.item(i); - if (pt && prevPoints.has(pt.identifier)) { - myTouches.push(pt); + for (const pt of mte.touches) { + if (!ignorePen || (pt.radiusX > 1 && pt.radiusY > 1)) { + for (const tPt of mte.targetTouches) { + if (tPt?.screenX === pt?.screenX && tPt?.screenY === pt?.screenY) { + if (pt && prevPoints.has(pt.identifier)) { + myTouches.push(pt); + } + } + } } } return myTouches; @@ -23,7 +66,7 @@ export namespace InteractionUtils { switch (type) { // pen and eraser are both pointer type 'pen', but pen is button 0 and eraser is button 5. -syip2 case PENTYPE: - return e.pointerType === PENTYPE && e.button === (e instanceof PointerEvent ? POINTER_PEN_BUTTON : REACT_POINTER_PEN_BUTTON); + return e.pointerType === PENTYPE && (e.button === -1 || e.button === 0); case ERASERTYPE: return e.pointerType === PENTYPE && e.button === (e instanceof PointerEvent ? ERASER_BUTTON : ERASER_BUTTON); default: |