diff options
Diffstat (limited to 'src/client/views/nodes/Sticky.tsx')
-rw-r--r-- | src/client/views/nodes/Sticky.tsx | 138 |
1 files changed, 69 insertions, 69 deletions
diff --git a/src/client/views/nodes/Sticky.tsx b/src/client/views/nodes/Sticky.tsx index d57dd5c0b..4a4d69e90 100644 --- a/src/client/views/nodes/Sticky.tsx +++ b/src/client/views/nodes/Sticky.tsx @@ -1,83 +1,83 @@ -import 'react-image-lightbox/style.css'; // This only needs to be imported once in your app -import React = require("react") -import { observer } from "mobx-react" -import 'react-pdf/dist/Page/AnnotationLayer.css' +import "react-image-lightbox/style.css"; // This only needs to be imported once in your app +import React = require("react"); +import { observer } from "mobx-react"; +import "react-pdf/dist/Page/AnnotationLayer.css"; interface IProps { - Height: number; - Width: number; - X: number; - Y: number; + Height: number; + Width: number; + X: number; + Y: number; } /** - * Sticky, also known as area highlighting, is used to highlight large selection of the PDF file. - * Improvements that could be made: maybe store line array and store that somewhere for future rerendering. - * - * Written By: Andrew Kim + * Sticky, also known as area highlighting, is used to highlight large selection of the PDF file. + * Improvements that could be made: maybe store line array and store that somewhere for future rerendering. + * + * Written By: Andrew Kim */ @observer export class Sticky extends React.Component<IProps> { + private initX: number = 0; + private initY: number = 0; - private initX: number = 0; - private initY: number = 0; + private _ref = React.createRef<HTMLCanvasElement>(); + private ctx: any; //context that keeps track of sticky canvas - private _ref = React.createRef<HTMLCanvasElement>(); - private ctx: any; //context that keeps track of sticky canvas - - /** - * drawing. Registers the first point that user clicks when mouse button is pressed down on canvas - */ - drawDown = (e: React.PointerEvent) => { - if (this._ref.current) { - this.ctx = this._ref.current.getContext("2d"); - let mouse = e.nativeEvent; - this.initX = mouse.offsetX; - this.initY = mouse.offsetY; - this.ctx.beginPath(); - this.ctx.lineTo(this.initX, this.initY); - this.ctx.strokeStyle = "black"; - document.addEventListener("pointermove", this.drawMove); - document.addEventListener("pointerup", this.drawUp); - } + /** + * drawing. Registers the first point that user clicks when mouse button is pressed down on canvas + */ + drawDown = (e: React.PointerEvent) => { + if (this._ref.current) { + this.ctx = this._ref.current.getContext("2d"); + let mouse = e.nativeEvent; + this.initX = mouse.offsetX; + this.initY = mouse.offsetY; + this.ctx.beginPath(); + this.ctx.lineTo(this.initX, this.initY); + this.ctx.strokeStyle = "black"; + document.addEventListener("pointermove", this.drawMove); + document.addEventListener("pointerup", this.drawUp); } + }; - //when user drags - drawMove = (e: PointerEvent): void => { - //x and y mouse movement - let x = this.initX += e.movementX, - y = this.initY += e.movementY; - //connects the point - this.ctx.lineTo(x, y); - this.ctx.stroke(); - - } + //when user drags + drawMove = (e: PointerEvent): void => { + //x and y mouse movement + let x = (this.initX += e.movementX), + y = (this.initY += e.movementY); + //connects the point + this.ctx.lineTo(x, y); + this.ctx.stroke(); + }; - /** - * when user lifts the mouse, the drawing ends - */ - drawUp = (e: PointerEvent) => { - this.ctx.closePath(); - console.log(this.ctx); - document.removeEventListener("pointermove", this.drawMove); - } + /** + * when user lifts the mouse, the drawing ends + */ + drawUp = (e: PointerEvent) => { + this.ctx.closePath(); + console.log(this.ctx); + document.removeEventListener("pointermove", this.drawMove); + }; - render() { - return ( - <div onPointerDown={this.drawDown}> - <canvas ref={this._ref} height={this.props.Height} width={this.props.Width} - style={{ - position: "absolute", - top: "20px", - left: "0px", - zIndex: 1, - background: "yellow", - transform: `translate(${this.props.X}px, ${this.props.Y}px)`, - opacity: 0.4 - }} - /> - - </div> - ); - } -}
\ No newline at end of file + render() { + return ( + <div onPointerDown={this.drawDown}> + <canvas + ref={this._ref} + height={this.props.Height} + width={this.props.Width} + style={{ + position: "absolute", + top: "20px", + left: "0px", + zIndex: 1, + background: "yellow", + transform: `translate(${this.props.X}px, ${this.props.Y}px)`, + opacity: 0.4 + }} + /> + </div> + ); + } +} |