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authorkimdahey <claire_kim1@brown.edu>2019-11-23 14:30:06 -0500
committerkimdahey <claire_kim1@brown.edu>2019-11-23 14:30:06 -0500
commit66424255021c7563df93aa9de9c1535bef1d9b50 (patch)
tree1149b7d16ab9680660aee470a34f456dae960639 /src/client/views/InkingCanvas.tsx
parentb4a23b21bbe0a44df1328419c7d94b97a772e54f (diff)
parent3b37cc31bb09b11238868c34a38a8e99f508479f (diff)
pulled from master
Diffstat (limited to 'src/client/views/InkingCanvas.tsx')
-rw-r--r--src/client/views/InkingCanvas.tsx196
1 files changed, 0 insertions, 196 deletions
diff --git a/src/client/views/InkingCanvas.tsx b/src/client/views/InkingCanvas.tsx
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--- a/src/client/views/InkingCanvas.tsx
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-import { action, computed, trace, observable, runInAction } from "mobx";
-import { observer } from "mobx-react";
-import { Utils } from "../../Utils";
-import { Transform } from "../util/Transform";
-import "./InkingCanvas.scss";
-import { InkingControl } from "./InkingControl";
-import { InkingStroke } from "./InkingStroke";
-import React = require("react");
-import { UndoManager } from "../util/UndoManager";
-import { StrokeData, InkField, InkTool } from "../../new_fields/InkField";
-import { Doc } from "../../new_fields/Doc";
-import { Cast, PromiseValue, NumCast } from "../../new_fields/Types";
-
-interface InkCanvasProps {
- getScreenTransform: () => Transform;
- AnnotationDocument: Doc;
- Document: Doc;
- inkFieldKey: string;
- children: () => JSX.Element[];
-}
-
-@observer
-export class InkingCanvas extends React.Component<InkCanvasProps> {
- maxCanvasDim = 8192 / 2; // 1/2 of the maximum canvas dimension for Chrome
- @observable inkMidX: number = 0;
- @observable inkMidY: number = 0;
- private previousState?: Map<string, StrokeData>;
- private _currentStrokeId: string = "";
- public static IntersectStrokeRect(stroke: StrokeData, selRect: { left: number, top: number, width: number, height: number }): boolean {
- return stroke.pathData.reduce((inside: boolean, val) => inside ||
- (selRect.left < val.x && selRect.left + selRect.width > val.x &&
- selRect.top < val.y && selRect.top + selRect.height > val.y)
- , false);
- }
- public static StrokeRect(stroke: StrokeData): { left: number, top: number, right: number, bottom: number } {
- return stroke.pathData.reduce((bounds: { left: number, top: number, right: number, bottom: number }, val) =>
- ({
- left: Math.min(bounds.left, val.x), top: Math.min(bounds.top, val.y),
- right: Math.max(bounds.right, val.x), bottom: Math.max(bounds.bottom, val.y)
- })
- , { left: Number.MAX_VALUE, top: Number.MAX_VALUE, right: -Number.MAX_VALUE, bottom: -Number.MAX_VALUE });
- }
-
- componentDidMount() {
- PromiseValue(Cast(this.props.AnnotationDocument[this.props.inkFieldKey], InkField)).then(ink => runInAction(() => {
- if (ink) {
- let bounds = Array.from(ink.inkData).reduce(([mix, max, miy, may], [id, strokeData]) =>
- strokeData.pathData.reduce(([mix, max, miy, may], p) =>
- [Math.min(mix, p.x), Math.max(max, p.x), Math.min(miy, p.y), Math.max(may, p.y)],
- [mix, max, miy, may]),
- [Number.MAX_VALUE, Number.MIN_VALUE, Number.MAX_VALUE, Number.MIN_VALUE]);
- this.inkMidX = (bounds[0] + bounds[1]) / 2;
- this.inkMidY = (bounds[2] + bounds[3]) / 2;
- }
- }));
- }
-
- @computed
- get inkData(): Map<string, StrokeData> {
- let map = Cast(this.props.AnnotationDocument[this.props.inkFieldKey], InkField);
- return !map ? new Map : new Map(map.inkData);
- }
-
- set inkData(value: Map<string, StrokeData>) {
- this.props.AnnotationDocument[this.props.inkFieldKey] = new InkField(value);
- }
-
- @action
- onPointerDown = (e: React.PointerEvent): void => {
- if (e.button !== 0 || e.altKey || e.ctrlKey || InkingControl.Instance.selectedTool === InkTool.None) {
- return;
- }
-
- document.addEventListener("pointermove", this.onPointerMove, true);
- document.addEventListener("pointerup", this.onPointerUp, true);
- e.stopPropagation();
- e.preventDefault();
-
- this.previousState = new Map(this.inkData);
-
- if (InkingControl.Instance.selectedTool !== InkTool.Eraser && InkingControl.Instance.selectedTool !== InkTool.Scrubber) {
- // start the new line, saves a uuid to represent the field of the stroke
- this._currentStrokeId = Utils.GenerateGuid();
- const data = this.inkData;
- data.set(this._currentStrokeId, {
- pathData: [this.relativeCoordinatesForEvent(e.clientX, e.clientY)],
- color: InkingControl.Instance.selectedColor,
- width: InkingControl.Instance.selectedWidth,
- tool: InkingControl.Instance.selectedTool,
- displayTimecode: NumCast(this.props.Document.currentTimecode, -1),
- creationTime: new Date().getTime()
- });
- this.inkData = data;
- }
- }
-
- @action
- onPointerUp = (e: PointerEvent): void => {
- document.removeEventListener("pointermove", this.onPointerMove, true);
- document.removeEventListener("pointerup", this.onPointerUp, true);
- let coord = this.relativeCoordinatesForEvent(e.clientX, e.clientY);
- if (Math.abs(coord.x - this.inkMidX) > 500 || Math.abs(coord.y - this.inkMidY) > 500) {
- this.inkMidX = coord.x;
- this.inkMidY = coord.y;
- }
- e.stopPropagation();
- e.preventDefault();
-
- const batch = UndoManager.StartBatch("One ink stroke");
- const oldState = this.previousState || new Map;
- this.previousState = undefined;
- const newState = new Map(this.inkData);
- UndoManager.AddEvent({
- undo: () => this.inkData = oldState,
- redo: () => this.inkData = newState
- });
- batch.end();
- }
-
- @action
- onPointerMove = (e: PointerEvent): void => {
- e.stopPropagation();
- e.preventDefault();
- if (InkingControl.Instance.selectedTool !== InkTool.Eraser && InkingControl.Instance.selectedTool !== InkTool.Scrubber) {
- let data = this.inkData; // add points to new line as it is being drawn
- let strokeData = data.get(this._currentStrokeId);
- if (strokeData) {
- strokeData.pathData.push(this.relativeCoordinatesForEvent(e.clientX, e.clientY));
- data.set(this._currentStrokeId, strokeData);
- }
- this.inkData = data;
- }
- }
-
- relativeCoordinatesForEvent = (ex: number, ey: number): { x: number, y: number } => {
- let [x, y] = this.props.getScreenTransform().transformPoint(ex, ey);
- return { x, y };
- }
-
- @action
- removeLine = (id: string): void => {
- if (!this.previousState) {
- this.previousState = new Map(this.inkData);
- document.addEventListener("pointermove", this.onPointerMove, true);
- document.addEventListener("pointerup", this.onPointerUp, true);
- }
- let data = this.inkData;
- data.delete(id);
- this.inkData = data;
- }
-
- @computed
- get drawnPaths() {
- let curTimecode = NumCast(this.props.Document.currentTimecode, -1);
- let paths = Array.from(this.inkData).reduce((paths, [id, strokeData]) => {
- if (strokeData.displayTimecode === -1 || (Math.abs(Math.round(strokeData.displayTimecode) - Math.round(curTimecode)) < 3)) {
- paths.push(<InkingStroke key={id} id={id}
- line={strokeData.pathData}
- count={strokeData.pathData.length}
- offsetX={this.maxCanvasDim - this.inkMidX}
- offsetY={this.maxCanvasDim - this.inkMidY}
- color={strokeData.color}
- width={strokeData.width}
- tool={strokeData.tool}
- creationTime={strokeData.creationTime}
- deleteCallback={this.removeLine} />);
- }
- return paths;
- }, [] as JSX.Element[]);
- let markerPaths = paths.filter(path => path.props.tool === InkTool.Highlighter);
- let penPaths = paths.filter(path => path.props.tool !== InkTool.Highlighter);
- return [!penPaths.length ? (null) :
- <svg className={`inkingCanvas-paths-ink`} key="Pens"
- style={{ left: `${this.inkMidX - this.maxCanvasDim}px`, top: `${this.inkMidY - this.maxCanvasDim}px` }} >
- {penPaths}
- </svg>,
- !markerPaths.length ? (null) :
- <svg className={`inkingCanvas-paths-markers`} key="Markers"
- style={{ left: `${this.inkMidX - this.maxCanvasDim}px`, top: `${this.inkMidY - this.maxCanvasDim}px` }}>
- {markerPaths}
- </svg>];
- }
-
- render() {
- let svgCanvasStyle = InkingControl.Instance.selectedTool !== InkTool.None && !this.props.Document.isBackground ? "canSelect" : "noSelect";
- let cursor = svgCanvasStyle === "canSelect" ? (InkingControl.Instance.selectedTool === InkTool.Eraser ||
- InkingControl.Instance.selectedTool === InkTool.Scrubber ? "pointer" : "default") : undefined;
- return (
- <div className="inkingCanvas">
- <div className={`inkingCanvas-${svgCanvasStyle}`} onPointerDown={this.onPointerDown} style={{ cursor: cursor }} />
- {this.props.children()}
- {this.drawnPaths}
- </div >
- );
- }
-} \ No newline at end of file