diff options
Diffstat (limited to 'src/client/util')
| -rw-r--r-- | src/client/util/InteractionUtils.ts | 111 | ||||
| -rw-r--r-- | src/client/util/SelectionManager.ts | 42 |
2 files changed, 133 insertions, 20 deletions
diff --git a/src/client/util/InteractionUtils.ts b/src/client/util/InteractionUtils.ts new file mode 100644 index 000000000..e58635a6f --- /dev/null +++ b/src/client/util/InteractionUtils.ts @@ -0,0 +1,111 @@ +export namespace InteractionUtils { + export const MOUSE = "mouse"; + export const TOUCH = "touch"; + + export function IsType(e: PointerEvent | React.PointerEvent, type: string): boolean { + return e.pointerType === type; + } + + export function TwoPointEuclidist(pt1: React.Touch, pt2: React.Touch): number { + return Math.sqrt(Math.pow(pt1.clientX - pt2.clientX, 2) + Math.pow(pt1.clientY - pt2.clientY, 2)); + } + + /** + * Returns the centroid of an n-arbitrary long list of points (takes the average the x and y components of each point) + * @param pts - n-arbitrary long list of points + */ + export function CenterPoint(pts: React.Touch[]): { X: number, Y: number } { + let centerX = pts.map(pt => pt.clientX).reduce((a, b) => a + b, 0) / pts.length; + let centerY = pts.map(pt => pt.clientY).reduce((a, b) => a + b, 0) / pts.length; + return { X: centerX, Y: centerY }; + } + + /** + * Returns -1 if pinching out, 0 if not pinching, and 1 if pinching in + * @param pt1 - new point that corresponds to oldPoint1 + * @param pt2 - new point that corresponds to oldPoint2 + * @param oldPoint1 - previous point 1 + * @param oldPoint2 - previous point 2 + */ + export function Pinching(pt1: React.Touch, pt2: React.Touch, oldPoint1: React.Touch, oldPoint2: React.Touch): number { + let threshold = 4; + let oldDist = TwoPointEuclidist(oldPoint1, oldPoint2); + let newDist = TwoPointEuclidist(pt1, pt2); + + /** if they have the same sign, then we are either pinching in or out. + * threshold it by 10 (it has to be pinching by at least threshold to be a valid pinch) + * so that it can still pan without freaking out + */ + if (Math.sign(oldDist) === Math.sign(newDist) && Math.abs(oldDist - newDist) > threshold) { + return Math.sign(oldDist - newDist); + } + return 0; + } + + /** + * Returns the type of Touch Interaction from a list of points. + * Also returns any data that is associated with a Touch Interaction + * @param pts - List of points + */ + // export function InterpretPointers(pts: React.Touch[]): { type: Opt<TouchInteraction>, data?: any } { + // const leniency = 200; + // switch (pts.length) { + // case 1: + // return { type: OneFinger }; + // case 2: + // return { type: TwoSeperateFingers }; + // case 3: + // let pt1 = pts[0]; + // let pt2 = pts[1]; + // let pt3 = pts[2]; + // if (pt1 && pt2 && pt3) { + // let dist12 = TwoPointEuclidist(pt1, pt2); + // let dist23 = TwoPointEuclidist(pt2, pt3); + // let dist13 = TwoPointEuclidist(pt1, pt3); + // console.log(`distances: ${dist12}, ${dist23}, ${dist13}`); + // let dist12close = dist12 < leniency; + // let dist23close = dist23 < leniency; + // let dist13close = dist13 < leniency; + // let xor2313 = dist23close ? !dist13close : dist13close; + // let xor = dist12close ? !xor2313 : xor2313; + // // three input xor because javascript doesn't have logical xor's + // if (xor) { + // let points: number[] = []; + // let min = Math.min(dist12, dist23, dist13); + // switch (min) { + // case dist12: + // points = [0, 1, 2]; + // break; + // case dist23: + // points = [1, 2, 0]; + // break; + // case dist13: + // points = [0, 2, 1]; + // break; + // } + // return { type: TwoToOneFingers, data: points }; + // } + // else { + // return { type: ThreeSeperateFingers, data: null }; + // } + // } + // default: + // return { type: undefined }; + // } + // } + + export function IsDragging(oldTouches: Map<number, React.Touch>, newTouches: TouchList, leniency: number): boolean { + for (let i = 0; i < newTouches.length; i++) { + let touch = newTouches.item(i); + if (touch) { + let oldTouch = oldTouches.get(touch.identifier); + if (oldTouch) { + if (TwoPointEuclidist(touch, oldTouch) >= leniency) { + return true; + } + } + } + } + return false; + } +}
\ No newline at end of file diff --git a/src/client/util/SelectionManager.ts b/src/client/util/SelectionManager.ts index 2d717ca57..e01216e0f 100644 --- a/src/client/util/SelectionManager.ts +++ b/src/client/util/SelectionManager.ts @@ -1,46 +1,44 @@ -import { observable, action, runInAction, IReactionDisposer, reaction, autorun } from "mobx"; -import { Doc, Opt } from "../../new_fields/Doc"; +import { observable, action, runInAction, ObservableMap } from "mobx"; +import { Doc } from "../../new_fields/Doc"; import { DocumentView } from "../views/nodes/DocumentView"; -import { FormattedTextBox } from "../views/nodes/FormattedTextBox"; -import { NumCast, StrCast } from "../../new_fields/Types"; -import { InkingControl } from "../views/InkingControl"; +import { computedFn } from "mobx-utils"; export namespace SelectionManager { class Manager { @observable IsDragging: boolean = false; - @observable SelectedDocuments: Array<DocumentView> = []; + SelectedDocuments: ObservableMap<DocumentView, boolean> = new ObservableMap(); @action SelectDoc(docView: DocumentView, ctrlPressed: boolean): void { // if doc is not in SelectedDocuments, add it - if (manager.SelectedDocuments.indexOf(docView) === -1) { + if (!manager.SelectedDocuments.get(docView)) { if (!ctrlPressed) { this.DeselectAll(); } - manager.SelectedDocuments.push(docView); + manager.SelectedDocuments.set(docView, true); // console.log(manager.SelectedDocuments); docView.props.whenActiveChanged(true); - } else if (!ctrlPressed && manager.SelectedDocuments.length > 1) { - manager.SelectedDocuments.map(dv => dv !== docView && dv.props.whenActiveChanged(false)); - manager.SelectedDocuments = [docView]; + } else if (!ctrlPressed && Array.from(manager.SelectedDocuments.entries()).length > 1) { + Array.from(manager.SelectedDocuments.keys()).map(dv => dv !== docView && dv.props.whenActiveChanged(false)); + manager.SelectedDocuments.clear(); + manager.SelectedDocuments.set(docView, true); } } @action DeselectDoc(docView: DocumentView): void { - let ind = manager.SelectedDocuments.indexOf(docView); - if (ind !== -1) { - manager.SelectedDocuments.splice(ind, 1); + if (manager.SelectedDocuments.get(docView)) { + manager.SelectedDocuments.delete(docView); docView.props.whenActiveChanged(false); } } @action DeselectAll(): void { - manager.SelectedDocuments.map(dv => dv.props.whenActiveChanged(false)); - manager.SelectedDocuments = []; + Array.from(manager.SelectedDocuments.keys()).map(dv => dv.props.whenActiveChanged(false)); + manager.SelectedDocuments.clear(); } } @@ -53,14 +51,18 @@ export namespace SelectionManager { manager.SelectDoc(docView, ctrlPressed); } - export function IsSelected(doc: DocumentView): boolean { - return manager.SelectedDocuments.indexOf(doc) !== -1; + export function IsSelected(doc: DocumentView, outsideReaction?: boolean): boolean { + return outsideReaction ? + manager.SelectedDocuments.get(doc) ? true : false : + computedFn(function isSelected(doc: DocumentView) { + return manager.SelectedDocuments.get(doc) ? true : false; + })(doc); } export function DeselectAll(except?: Doc): void { let found: DocumentView | undefined = undefined; if (except) { - for (const view of manager.SelectedDocuments) { + for (const view of Array.from(manager.SelectedDocuments.keys())) { if (view.props.Document === except) found = view; } } @@ -73,6 +75,6 @@ export namespace SelectionManager { export function GetIsDragging() { return manager.IsDragging; } export function SelectedDocuments(): Array<DocumentView> { - return manager.SelectedDocuments.slice(); + return Array.from(manager.SelectedDocuments.keys()); } } |