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brausjonas
2023-07-07 17:53:52 +02:00
parent fb32f7d36a
commit ac85fbda21
4 changed files with 797 additions and 674 deletions
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src/App.js
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import './App.css';
import {useLayoutEffect, useRef, useState} from "react";
let mouseDownMenuBar = false
let mouseDownCanvas = false
let mouseMenuBarOffsetX, mouseMenuBarOffsetY = 0
let context
let hintContext
let canvas
let downLink
let lastPositions = []
let strokeWidth = 2
let lastMouse = 0
let eraserColor = "rgb(255, 255, 255)"
let lastStrokeWidthPencil = 2, lastStrokeWidthEraser = 20, lastStrokeWidthRect = 2, lastStrokeWidthCircle = 2,
lastStrokeWidthLine = 2
let hintCanvas
let formAnchor = null;
let textInput
let fileInput
let moverActive = false
let moverWidth = 0, moverHeight = 0
import Drawing from "./Drawing";
import {useState} from "react";
import StartForm from "./StartForm";
export default function App() {
useLayoutEffect(() => {
const [showForm, setShowForm] = useState("flex")
const [showDrawing, setShowDrawing] = useState("none")
window.addEventListener("beforeunload", e => {
e.preventDefault()
e.returnValue = ""
})
const [widthDrawing, setWidthDrawing] = useState(0)
const [heightDrawing, setHeightDrawing] = useState(0)
canvas = document.getElementById("canvas")
context = canvas.getContext("2d")
fileInput = document.getElementById("fileInput")
downLink = document.createElement("a")
downLink.className = "no-display"
textInput = document.getElementById("textInput")
hintCanvas = document.getElementById("hintCanvas")
hintContext = hintCanvas.getContext("2d")
window.scrollTo((5000 / window.innerWidth) * 500, (3000 / window.innerHeight) * 300)
setInterval(() => {
if (selectedTool === "pencil" || selectedTool === "eraser") {
if (lastPositions.length >= 2) {
let point1 = lastPositions.shift()
let point2 = lastPositions[lastPositions.length - 1]
let connection = new Position(point1.x - point2.x, point1.y - point2.y)
for (let i = 0; i < 1; i += 0.001) {
context.beginPath()
context.arc(point1.x - (connection.x * i), point1.y - (connection.y * i), strokeWidth, 0, 2 * Math.PI, false)
context.fill()
}
} else if (Date.now() - lastMouse > 100 && lastPositions.length >= 1) {
let point = lastPositions.shift()
context.beginPath()
context.arc(point.x, point.y, strokeWidth, 0, 2 * Math.PI, false)
context.fill()
}
}
}, 1)
}, [])
const [menuBarLeft, setMenuBarLeft] = useState(50)
const [menuBarTop, setMenuBarTop] = useState(50)
const [strokeWidthSliderValue, setStrokeWidthSliderValue] = useState(strokeWidth)
const [colorValue, setColorValue] = useState("#000000")
const [menuBarShown, setMenuBarShown] = useState(true)
const [selectedTool, setSelectedTool] = useState("pencil")
const [textInputX, setTextInputX] = useState(0)
const [textInputY, setTextInputY] = useState(0)
const [showTextInput, setShowTextInput] = useState(false)
class Position {
constructor(x, y) {
this.x = x
this.y = y
}
function onCreateCanvas(inputWidth, inputHeight) {
setWidthDrawing(parseInt(inputWidth.value))
setHeightDrawing(parseInt(inputHeight.value))
setShowForm("none")
setShowDrawing("block")
}
function handleMouseDownCanvas(e) {
if (e.button === 0) {
if(!moverActive) {
mouseDownCanvas = true
hintContext.clearRect(0, 0, 5000, 3000)
setShowTextInput(false)
context.fillStyle = selectedTool !== "eraser" ? colorValue : eraserColor
if (selectedTool === "pencil" || selectedTool === "eraser") {
context.beginPath()
context.arc(e.pageX, e.pageY, strokeWidthSliderValue, 0, 2 * Math.PI, false)
context.fill()
lastMouse = Date.now()
lastPositions.push(new Position(e.pageX, e.pageY))
} else {
formAnchor = new Position(e.pageX, e.pageY)
}
if (selectedTool === "text") {
mouseDownCanvas = false
setTextInputX(e.pageX + 10)
setTextInputY(e.pageY + 10)
setShowTextInput(true)
hintContext.beginPath()
hintContext.fillStyle = "black"
hintContext.arc(e.pageX, e.pageY, 5, 0, 2 * Math.PI, false)
hintContext.fill()
}
}
else {
context.clearRect(formAnchor.x, formAnchor.y, moverWidth, moverHeight)
context.drawImage(hintCanvas, e.pageX - moverWidth + 3, e.pageY - moverHeight + 3, moverWidth - 6, moverHeight - 6, e.pageX - moverWidth + 3, e.pageY - moverHeight + 3, moverWidth - 6, moverHeight - 6)
hintContext.clearRect(0, 0, 5000, 3000)
moverActive = false
mouseDownCanvas = false
canvas.style.cursor = "crosshair"
}
}
}
function handleMouseUpCanvas(e) {
if (e.button === 0 && mouseDownCanvas) {
mouseDownCanvas = false
if (selectedTool === "rect") {
context.strokeStyle = colorValue
context.beginPath()
context.rect(formAnchor.x, formAnchor.y, e.pageX - formAnchor.x, e.pageY - formAnchor.y)
context.lineWidth = strokeWidthSliderValue
context.stroke()
} else if (selectedTool === "circle") {
context.strokeStyle = colorValue
context.beginPath()
let radius = (e.pageX - formAnchor.x) / 2
let yRad = (e.pageY - formAnchor.y) / 2
context.arc(formAnchor.x + radius, formAnchor.y + yRad, Math.abs(radius), 0, 2 * Math.PI, false)
context.lineWidth = strokeWidthSliderValue
context.stroke()
} else if (selectedTool === "selector") {
context.clearRect(formAnchor.x, formAnchor.y, e.pageX - formAnchor.x, e.pageY - formAnchor.y)
} else if (selectedTool === "line") {
context.strokeStyle = colorValue
context.beginPath()
context.lineWidth = strokeWidthSliderValue
context.moveTo(formAnchor.x, formAnchor.y)
context.lineTo(e.pageX, e.pageY)
context.stroke()
context.moveTo(0, 0)
}
else if (selectedTool === "mover") {
canvas.style.cursor = "move"
moverActive = true
moverWidth = e.pageX - formAnchor.x
moverHeight = e.pageY - formAnchor.y
}
}
if (selectedTool !== "text") {
hintContext.clearRect(0, 0, 5000, 3000)
} else {
textInput.focus()
}
}
function handleMouseMove(e) {
let mouseX = e.pageX
let mouseY = e.pageY
if (selectedTool === "pencil" || selectedTool === "eraser") {
hintContext.clearRect(0, 0, 5000, 3000)
hintContext.beginPath()
hintContext.fillStyle = colorValue
hintContext.arc(mouseX, mouseY, strokeWidthSliderValue, 0, 2 * Math.PI, false)
hintContext.fill()
}
if (mouseDownMenuBar) {
setMenuBarLeft(mouseX - mouseMenuBarOffsetX)
setMenuBarTop(mouseY - mouseMenuBarOffsetY)
} else if (mouseDownCanvas) {
hintContext.clearRect(0, 0, 5000, 3000)
if (selectedTool === "pencil" || selectedTool === "eraser") {
context.fillStyle = selectedTool !== "eraser" ? colorValue : eraserColor
lastPositions.push(new Position(mouseX, mouseY))
lastMouse = Date.now()
} else if (selectedTool === "rect" || selectedTool === "circle" || selectedTool === "selector" || selectedTool === "line" || selectedTool === "mover") {
hintContext.strokeStyle = colorValue
hintContext.lineWidth = strokeWidthSliderValue
if (selectedTool === "selector") {
hintContext.setLineDash([10, 15])
hintContext.lineWidth = 3
hintContext.strokeStyle = "rgb(200, 0, 0)"
}
else if(selectedTool === "mover") {
hintContext.setLineDash([10, 15])
hintContext.lineWidth = 3
hintContext.strokeStyle = "rgb(0, 0, 0)"
} else {
hintContext.setLineDash([])
}
hintContext.beginPath()
if (selectedTool === "rect" || selectedTool === "selector" || selectedTool === "mover") {
hintContext.rect(formAnchor.x, formAnchor.y, mouseX - formAnchor.x, mouseY - formAnchor.y)
hintContext.stroke()
}
if (selectedTool === "circle") {
let radius = (mouseX - formAnchor.x) / 2
let yRad = (mouseY - formAnchor.y) / 2
hintContext.arc(formAnchor.x + radius, formAnchor.y + yRad, Math.abs(radius), 0, 2 * Math.PI, false)
hintContext.stroke()
}
if (selectedTool === "line") {
hintContext.moveTo(formAnchor.x, formAnchor.y)
hintContext.lineTo(mouseX, mouseY)
hintContext.stroke()
}
}
} else if (moverActive) {
hintContext.clearRect(0, 0, 5000, 3000)
hintContext.drawImage(canvas, formAnchor.x, formAnchor.y, moverWidth, moverHeight, e.pageX - moverWidth, e.pageY - moverHeight, moverWidth, moverHeight)
}
}
function onExportButtonClick(e) {
let tempCanvas = document.createElement("canvas")
tempCanvas.width = 5000
tempCanvas.height = 3000
let tempContext = tempCanvas.getContext("2d")
tempContext.fillStyle = "rgb(255, 255, 255)"
tempContext.fillRect(0, 0, 5000, 3000)
tempContext.drawImage(canvas, 0, 0, 5000, 3000, 0, 0, 5000, 3000)
context.drawImage(tempCanvas, 0, 0, 5000, 3000, 0, 0, 5000, 3000)
let img = canvas.toDataURL("image/png")
let image = new Image()
image.src = "data:image/png;base64," + img
downLink.href = img
downLink.download = "export.png"
downLink.click()
}
function onSaveButtonClick()
{
let img = canvas.toDataURL("image/png")
let blob = new Blob([img], {type: "text/plain"})
var url = URL.createObjectURL(blob)
downLink.href = url
downLink.download = "save.redraw"
downLink.click()
}
function onOpenButtonClick() {
fileInput.click()
}
function handleToolChange(e) {
setShowTextInput(false)
hintContext.clearRect(0, 0, 5000, 3000)
setSelectedTool(e.target.value)
if (e.target.value === "pencil") {
setStrokeWidthSliderValue(lastStrokeWidthPencil)
strokeWidth = lastStrokeWidthPencil
} else if (e.target.value === "eraser") {
setStrokeWidthSliderValue(lastStrokeWidthEraser)
strokeWidth = lastStrokeWidthEraser
} else if (e.target.value === "rect") {
setStrokeWidthSliderValue(lastStrokeWidthRect)
strokeWidth = lastStrokeWidthRect
} else if (e.target.value === "circle") {
setStrokeWidthSliderValue(lastStrokeWidthCircle)
strokeWidth = lastStrokeWidthCircle
} else if (e.target.value === "line") {
setStrokeWidthSliderValue(lastStrokeWidthLine)
strokeWidth = lastStrokeWidthLine
}
}
return (
<div onMouseMove={e => handleMouseMove(e)} style={{overflow: "unset"}}>
<canvas id="canvas" style={{backgroundColor: "rgb(255, 255, 255)", cursor: "crosshair"}}
width={5000}
height={3000}
onMouseDown={e => {
handleMouseDownCanvas(e)
}}
onMouseUp={e => {
handleMouseUpCanvas(e)
}}
>
</canvas>
<canvas id="hintCanvas" style={{
backgroundColor: "rgba(255, 255, 255, 0)",
pointerEvents: "none",
position: "absolute",
left: 0,
top: 0
}}
width={5000}
height={3000}
>
</canvas>
<input autoFocus name={"textInput"} id={"textInput"} type={"text"} style={{
display: (showTextInput ? "block" : "none"),
position: "absolute",
top: textInputY,
left: textInputX,
fontSize: 25,
fontFamily: "sans-serif"
}} onKeyDown={e => {
if (e.key === "Enter") {
mouseDownCanvas = false
context.font = "25px sans-serif"
context.textAlign = "center"
context.fillText(textInput.value, formAnchor.x, formAnchor.y + 10)
textInput.value = ""
setShowTextInput(false)
hintContext.clearRect(0, 0, 5000, 3000)
}
}}/>
<div id="menubar" style={{
position: "fixed",
backgroundColor: "white",
borderRadius: 15,
boxShadow: "0 0 5px gray",
padding: 25,
top: menuBarTop,
left: menuBarLeft,
display: "flex",
justifyContent: "center",
alignItems: "center"
}}
onMouseDown={(e) => {
if (e.currentTarget === e.target) {
mouseDownMenuBar = true
mouseMenuBarOffsetX = e.pageX - e.currentTarget.getBoundingClientRect().left
mouseMenuBarOffsetY = e.pageY - e.currentTarget.getBoundingClientRect().top
}
hintContext.clearRect(0, 0, 5000, 3000)
setShowTextInput(false)
}}
onMouseUp={(e) => {
mouseDownMenuBar = false
}}
onDoubleClick={() => {
setMenuBarShown(!menuBarShown)
}}
>
<div style={{
display: "flex",
justifyContent: "flex-start",
alignItems: "center",
flexDirection: "column",
pointerEvents: "none"
}}>
<div style={{
pointerEvents: "none"
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="30" height="30" fill="currentColor"
className="bi bi-grip-horizontal" viewBox="0 0 16 16">
<path
d="M2 8a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm0-3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm3 3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm0-3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm3 3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm0-3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm3 3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm0-3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm3 3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm0-3a1 1 0 1 1 0 2 1 1 0 0 1 0-2z"/>
</svg>
</div>
<div style={{
display: menuBarShown ? "flex" : "none",
justifyContent: "center",
alignItems: "center",
pointerEvents: "none"
}}>
{/*stroke width*/}
<div style={{
display: "flex",
flexDirection: "column",
justifyContent: "center",
gap: 5,
alignItems: "center",
pointerEvents: "none"
}}>
<div style={{
display: "flex",
flexDirection: "row",
}}>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-pencil-fill" viewBox="0 0 16 16">
<path
d="M12.854.146a.5.5 0 0 0-.707 0L10.5 1.793 14.207 5.5l1.647-1.646a.5.5 0 0 0 0-.708l-3-3zm.646 6.061L9.793 2.5 3.293 9H3.5a.5.5 0 0 1 .5.5v.5h.5a.5.5 0 0 1 .5.5v.5h.5a.5.5 0 0 1 .5.5v.5h.5a.5.5 0 0 1 .5.5v.207l6.5-6.5zm-7.468 7.468A.5.5 0 0 1 6 13.5V13h-.5a.5.5 0 0 1-.5-.5V12h-.5a.5.5 0 0 1-.5-.5V11h-.5a.5.5 0 0 1-.5-.5V10h-.5a.499.499 0 0 1-.175-.032l-.179.178a.5.5 0 0 0-.11.168l-2 5a.5.5 0 0 0 .65.65l5-2a.5.5 0 0 0 .168-.11l.178-.178z"/>
</svg>
<input type={"radio"} name={"tool"} value={"pencil"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "pencil"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-eraser-fill" viewBox="0 0 16 16">
<path
d="M8.086 2.207a2 2 0 0 1 2.828 0l3.879 3.879a2 2 0 0 1 0 2.828l-5.5 5.5A2 2 0 0 1 7.879 15H5.12a2 2 0 0 1-1.414-.586l-2.5-2.5a2 2 0 0 1 0-2.828l6.879-6.879zm.66 11.34L3.453 8.254 1.914 9.793a1 1 0 0 0 0 1.414l2.5 2.5a1 1 0 0 0 .707.293H7.88a1 1 0 0 0 .707-.293l.16-.16z"/>
</svg>
<input type={"radio"} value={"eraser"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "eraser"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-circle" viewBox="0 0 16 16">
<path
d="M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14zm0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16z"/>
</svg>
<input type={"radio"} value={"circle"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "circle"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-square" viewBox="0 0 16 16">
<path
d="M14 1a1 1 0 0 1 1 1v12a1 1 0 0 1-1 1H2a1 1 0 0 1-1-1V2a1 1 0 0 1 1-1h12zM2 0a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V2a2 2 0 0 0-2-2H2z"/>
</svg>
<input type={"radio"} value={"rect"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "rect"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-dash" viewBox="0 0 16 16">
<path d="M4 8a.5.5 0 0 1 .5-.5h7a.5.5 0 0 1 0 1h-7A.5.5 0 0 1 4 8z"/>
</svg>
<input type={"radio"} value={"line"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "line"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-fonts" viewBox="0 0 16 16">
<path
d="M12.258 3h-8.51l-.083 2.46h.479c.26-1.544.758-1.783 2.693-1.845l.424-.013v7.827c0 .663-.144.82-1.3.923v.52h4.082v-.52c-1.162-.103-1.306-.26-1.306-.923V3.602l.431.013c1.934.062 2.434.301 2.693 1.846h.479L12.258 3z"/>
</svg>
<input type={"radio"} value={"text"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "text"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-x-lg" viewBox="0 0 16 16">
<path
d="M2.146 2.854a.5.5 0 1 1 .708-.708L8 7.293l5.146-5.147a.5.5 0 0 1 .708.708L8.707 8l5.147 5.146a.5.5 0 0 1-.708.708L8 8.707l-5.146 5.147a.5.5 0 0 1-.708-.708L7.293 8 2.146 2.854Z"/>
</svg>
<input type={"radio"} value={"selector"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "selector"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-arrows-move" viewBox="0 0 16 16">
<path fill-rule="evenodd"
d="M7.646.146a.5.5 0 0 1 .708 0l2 2a.5.5 0 0 1-.708.708L8.5 1.707V5.5a.5.5 0 0 1-1 0V1.707L6.354 2.854a.5.5 0 1 1-.708-.708l2-2zM8 10a.5.5 0 0 1 .5.5v3.793l1.146-1.147a.5.5 0 0 1 .708.708l-2 2a.5.5 0 0 1-.708 0l-2-2a.5.5 0 0 1 .708-.708L7.5 14.293V10.5A.5.5 0 0 1 8 10zM.146 8.354a.5.5 0 0 1 0-.708l2-2a.5.5 0 1 1 .708.708L1.707 7.5H5.5a.5.5 0 0 1 0 1H1.707l1.147 1.146a.5.5 0 0 1-.708.708l-2-2zM10 8a.5.5 0 0 1 .5-.5h3.793l-1.147-1.146a.5.5 0 0 1 .708-.708l2 2a.5.5 0 0 1 0 .708l-2 2a.5.5 0 0 1-.708-.708L14.293 8.5H10.5A.5.5 0 0 1 10 8z"/>
</svg>
<input type={"radio"} value={"mover"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "mover"} onChange={e => {
handleToolChange(e)
}}/>
</div>
</div>
<input type={"range"} min={1} max={40} value={strokeWidthSliderValue} onChange={e => {
setStrokeWidthSliderValue(e.currentTarget.value)
strokeWidth = e.currentTarget.value
if (selectedTool === "pencil") {
lastStrokeWidthPencil = strokeWidth
} else if (selectedTool === "eraser") {
lastStrokeWidthEraser = strokeWidth;
} else if (selectedTool === "rect") {
lastStrokeWidthRect = strokeWidth;
} else if (selectedTool === "circle") {
lastStrokeWidthCircle = strokeWidth
} else if (selectedTool === "line") {
lastStrokeWidthLine = strokeWidth
}
}} style={{
pointerEvents: "auto",
display: ((selectedTool === "selector" || selectedTool === "text" || selectedTool === "mover") ? "none" : "block")
}}/>
<p style={{
userSelect: "none",
display: ((selectedTool === "selector" || selectedTool === "text" || selectedTool === "mover") ? "none" : "block")
}}>{strokeWidthSliderValue}</p>
</div>
{/*Color Selector*/}
<input type={"color"}
style={{
pointerEvents: "auto",
borderWidth: 0,
borderRadius: 5,
boxShadow: "0 0 5px gray",
marginLeft: 100
}} onChange={e => {
setColorValue(e.target.value)
}} value={colorValue}/>
<div style={{
display: "flex",
flexDirection: "column",
justifyContent: "center",
alignItems: "center",
gap: 5
}}>
{/*open button*/}
<button style={{
padding: 10,
backgroundColor: "white",
borderRadius: 15,
marginLeft: 10,
boxShadow: "0 0 5px gray",
borderWidth: 0,
width: 60,
pointerEvents: "auto"
}}
onClick={onOpenButtonClick}>
Open
</button>
<input onChange={() => {
let file = fileInput.files[0]
let reader = new FileReader()
reader.onload = e => {
let image = new Image()
image.onload = () => {
context.clearRect(0, 0, 5000, 3000)
context.drawImage(image, 0, 0)
}
image.src = e.target.result
}
reader.readAsText(file)
}} id={"fileInput"} type={"file"} accept={".redraw"} style={{pointerEvents: "auto", display: "none"}}/>
{/*save button*/}
<button style={{
padding: 10,
backgroundColor: "white",
borderRadius: 15,
marginLeft: 10,
boxShadow: "0 0 5px gray",
borderWidth: 0,
width: 60,
pointerEvents: "auto"
}}
onClick={onSaveButtonClick}>
Save
</button>
{/*export button*/}
<button style={{
padding: 10,
backgroundColor: "white",
borderRadius: 15,
marginLeft: 10,
boxShadow: "0 0 5px gray",
borderWidth: 0,
width: 60,
pointerEvents: "auto"
}}
onClick={onExportButtonClick}>
Export
</button>
</div>
</div>
</div>
</div>
</div>
return (
<div>
<StartForm show={showForm} onCreateCanvas={onCreateCanvas}/>
<Drawing show={showDrawing} width={widthDrawing} height={heightDrawing}/>
</div>
);
}
src/Drawing.js
+702
View File
@@ -0,0 +1,702 @@
import './App.css';
import {useEffect, useLayoutEffect, useRef, useState} from "react";
let mouseDownMenuBar = false
let mouseDownCanvas = false
let mouseMenuBarOffsetX, mouseMenuBarOffsetY = 0
let context
let hintContext
let canvas
let downLink
let lastPositions = []
let strokeWidth = 2
let lastMouse = 0
let eraserColor = "rgb(255, 255, 255)"
let lastStrokeWidthPencil = 2, lastStrokeWidthEraser = 20, lastStrokeWidthRect = 2, lastStrokeWidthCircle = 2,
lastStrokeWidthLine = 2
let hintCanvas
let formAnchor = null;
let textInput
let fileInput
let moverActive = false
let moverWidth = 0, moverHeight = 0
export default function Drawing(p) {
useEffect(() => {
if(p.show !== "none") {
let body = document.querySelector("body")
body.style.background = "rgb(200, 200, 200)"
}
})
useLayoutEffect(() => {
canvas = document.getElementById("canvas")
context = canvas.getContext("2d")
fileInput = document.getElementById("fileInput")
downLink = document.createElement("a")
downLink.className = "no-display"
textInput = document.getElementById("textInput")
hintCanvas = document.getElementById("hintCanvas")
hintContext = hintCanvas.getContext("2d")
setInterval(() => {
if (selectedTool === "pencil" || selectedTool === "eraser") {
if (lastPositions.length >= 2) {
let point1 = lastPositions.shift()
let point2 = lastPositions[lastPositions.length - 1]
let connection = new Position(point1.x - point2.x, point1.y - point2.y)
for (let i = 0; i < 1; i += 0.001) {
context.beginPath()
context.arc(point1.x - (connection.x * i), point1.y - (connection.y * i), strokeWidth, 0, 2 * Math.PI, false)
context.fill()
}
} else if (Date.now() - lastMouse > 100 && lastPositions.length >= 1) {
let point = lastPositions.shift()
context.beginPath()
context.arc(point.x, point.y, strokeWidth, 0, 2 * Math.PI, false)
context.fill()
}
}
}, 1)
}, [])
const [menuBarLeft, setMenuBarLeft] = useState(50)
const [menuBarTop, setMenuBarTop] = useState(50)
const [strokeWidthSliderValue, setStrokeWidthSliderValue] = useState(strokeWidth)
const [colorValue, setColorValue] = useState("#000000")
const [menuBarShown, setMenuBarShown] = useState(true)
const [selectedTool, setSelectedTool] = useState("pencil")
const [textInputX, setTextInputX] = useState(0)
const [textInputY, setTextInputY] = useState(0)
const [showTextInput, setShowTextInput] = useState(false)
class Position {
constructor(x, y) {
this.x = x
this.y = y
}
}
function handleMouseDownCanvas(e) {
if (e.button === 0) {
if(!moverActive) {
mouseDownCanvas = true
hintContext.clearRect(0, 0, p.width, p.height)
setShowTextInput(false)
context.fillStyle = selectedTool !== "eraser" ? colorValue : eraserColor
if (selectedTool === "pencil" || selectedTool === "eraser") {
context.beginPath()
context.arc(e.pageX, e.pageY, strokeWidthSliderValue, 0, 2 * Math.PI, false)
context.fill()
lastMouse = Date.now()
lastPositions.push(new Position(e.pageX, e.pageY))
} else {
formAnchor = new Position(e.pageX, e.pageY)
}
if (selectedTool === "text") {
mouseDownCanvas = false
setTextInputX(e.pageX + 10)
setTextInputY(e.pageY + 10)
setShowTextInput(true)
hintContext.beginPath()
hintContext.fillStyle = "black"
hintContext.arc(e.pageX, e.pageY, 5, 0, 2 * Math.PI, false)
hintContext.fill()
}
}
else {
context.clearRect(formAnchor.x, formAnchor.y, moverWidth, moverHeight)
context.drawImage(hintCanvas, e.pageX - moverWidth + 3, e.pageY - moverHeight + 3, moverWidth - 6, moverHeight - 6, e.pageX - moverWidth + 3, e.pageY - moverHeight + 3, moverWidth - 6, moverHeight - 6)
hintContext.clearRect(0, 0, p.width, p.height)
moverActive = false
mouseDownCanvas = false
canvas.style.cursor = "crosshair"
}
}
}
function handleMouseUpCanvas(e) {
if (e.button === 0 && mouseDownCanvas) {
mouseDownCanvas = false
if (selectedTool === "rect") {
context.strokeStyle = colorValue
context.beginPath()
context.rect(formAnchor.x, formAnchor.y, e.pageX - formAnchor.x, e.pageY - formAnchor.y)
context.lineWidth = strokeWidthSliderValue
context.stroke()
} else if (selectedTool === "circle") {
context.strokeStyle = colorValue
context.beginPath()
let radius = (e.pageX - formAnchor.x) / 2
let yRad = (e.pageY - formAnchor.y) / 2
context.arc(formAnchor.x + radius, formAnchor.y + yRad, Math.abs(radius), 0, 2 * Math.PI, false)
context.lineWidth = strokeWidthSliderValue
context.stroke()
} else if (selectedTool === "selector") {
context.clearRect(formAnchor.x, formAnchor.y, e.pageX - formAnchor.x, e.pageY - formAnchor.y)
} else if (selectedTool === "line") {
context.strokeStyle = colorValue
context.beginPath()
context.lineWidth = strokeWidthSliderValue
context.moveTo(formAnchor.x, formAnchor.y)
context.lineTo(e.pageX, e.pageY)
context.stroke()
context.moveTo(0, 0)
}
else if (selectedTool === "mover") {
canvas.style.cursor = "move"
moverActive = true
moverWidth = e.pageX - formAnchor.x
moverHeight = e.pageY - formAnchor.y
}
}
if (selectedTool !== "text") {
hintContext.clearRect(0, 0, p.width, p.height)
} else {
textInput.focus()
}
}
function handleMouseMove(e) {
let mouseX = e.pageX
let mouseY = e.pageY
if (selectedTool === "pencil" || selectedTool === "eraser") {
hintContext.clearRect(0, 0, p.width, p.height)
hintContext.beginPath()
hintContext.fillStyle = colorValue
hintContext.arc(mouseX, mouseY, strokeWidthSliderValue, 0, 2 * Math.PI, false)
hintContext.fill()
}
if (mouseDownMenuBar) {
setMenuBarLeft(mouseX - mouseMenuBarOffsetX)
setMenuBarTop(mouseY - mouseMenuBarOffsetY)
} else if (mouseDownCanvas) {
hintContext.clearRect(0, 0, p.width, p.height)
if (selectedTool === "pencil" || selectedTool === "eraser") {
context.fillStyle = selectedTool !== "eraser" ? colorValue : eraserColor
lastPositions.push(new Position(mouseX, mouseY))
lastMouse = Date.now()
} else if (selectedTool === "rect" || selectedTool === "circle" || selectedTool === "selector" || selectedTool === "line" || selectedTool === "mover") {
hintContext.strokeStyle = colorValue
hintContext.lineWidth = strokeWidthSliderValue
if (selectedTool === "selector") {
hintContext.setLineDash([10, 15])
hintContext.lineWidth = 3
hintContext.strokeStyle = "rgb(200, 0, 0)"
}
else if(selectedTool === "mover") {
hintContext.setLineDash([10, 15])
hintContext.lineWidth = 3
hintContext.strokeStyle = "rgb(0, 0, 0)"
} else {
hintContext.setLineDash([])
}
hintContext.beginPath()
if (selectedTool === "rect" || selectedTool === "selector" || selectedTool === "mover") {
hintContext.rect(formAnchor.x, formAnchor.y, mouseX - formAnchor.x, mouseY - formAnchor.y)
hintContext.stroke()
}
if (selectedTool === "circle") {
let radius = (mouseX - formAnchor.x) / 2
let yRad = (mouseY - formAnchor.y) / 2
hintContext.arc(formAnchor.x + radius, formAnchor.y + yRad, Math.abs(radius), 0, 2 * Math.PI, false)
hintContext.stroke()
}
if (selectedTool === "line") {
hintContext.moveTo(formAnchor.x, formAnchor.y)
hintContext.lineTo(mouseX, mouseY)
hintContext.stroke()
}
}
} else if (moverActive) {
hintContext.clearRect(0, 0, p.width, p.height)
hintContext.drawImage(canvas, formAnchor.x, formAnchor.y, moverWidth, moverHeight, e.pageX - moverWidth, e.pageY - moverHeight, moverWidth, moverHeight)
}
}
function onExportButtonClick(e) {
let tempCanvas = document.createElement("canvas")
tempCanvas.width = p.width
tempCanvas.height = p.height
let tempContext = tempCanvas.getContext("2d")
tempContext.fillStyle = "rgb(255, 255, 255)"
tempContext.fillRect(0, 0, p.width, p.height)
tempContext.drawImage(canvas, 0, 0, p.width, p.height, 0, 0, p.width, p.height)
context.drawImage(tempCanvas, 0, 0, p.width, p.height, 0, 0, p.width, p.height)
let img = canvas.toDataURL("image/png")
let image = new Image()
image.src = "data:image/png;base64," + img
downLink.href = img
downLink.download = "export.png"
downLink.click()
}
function onSaveButtonClick()
{
let img = canvas.toDataURL("image/png")
let blob = new Blob([img], {type: "text/plain"})
var url = URL.createObjectURL(blob)
downLink.href = url
downLink.download = "save.redraw"
downLink.click()
}
function onOpenButtonClick() {
fileInput.click()
}
function handleToolChange(e) {
setShowTextInput(false)
hintContext.clearRect(0, 0, p.width, p.height)
setSelectedTool(e.target.value)
if (e.target.value === "pencil") {
setStrokeWidthSliderValue(lastStrokeWidthPencil)
strokeWidth = lastStrokeWidthPencil
} else if (e.target.value === "eraser") {
setStrokeWidthSliderValue(lastStrokeWidthEraser)
strokeWidth = lastStrokeWidthEraser
} else if (e.target.value === "rect") {
setStrokeWidthSliderValue(lastStrokeWidthRect)
strokeWidth = lastStrokeWidthRect
} else if (e.target.value === "circle") {
setStrokeWidthSliderValue(lastStrokeWidthCircle)
strokeWidth = lastStrokeWidthCircle
} else if (e.target.value === "line") {
setStrokeWidthSliderValue(lastStrokeWidthLine)
strokeWidth = lastStrokeWidthLine
}
}
return (
<div onMouseMove={e => handleMouseMove(e)} style={{overflow: "unset", display: p.show}}>
<canvas id="canvas" style={{backgroundColor: "rgb(255, 255, 255)", cursor: "crosshair"}}
width={p.width}
height={p.height}
onMouseDown={e => {
handleMouseDownCanvas(e)
}}
onMouseUp={e => {
handleMouseUpCanvas(e)
}}
>
</canvas>
<canvas id="hintCanvas" style={{
backgroundColor: "rgba(255, 255, 255, 0)",
pointerEvents: "none",
position: "absolute",
left: 0,
top: 0
}}
width={p.width}
height={p.height}
>
</canvas>
<input autoFocus name={"textInput"} id={"textInput"} type={"text"} style={{
display: (showTextInput ? "block" : "none"),
position: "absolute",
top: textInputY,
left: textInputX,
fontSize: 25,
fontFamily: "sans-serif"
}} onKeyDown={e => {
if (e.key === "Enter") {
mouseDownCanvas = false
context.font = "25px sans-serif"
context.textAlign = "center"
context.fillText(textInput.value, formAnchor.x, formAnchor.y + 10)
textInput.value = ""
setShowTextInput(false)
hintContext.clearRect(0, 0, p.width, p.height)
}
}}/>
<div id="menubar" style={{
position: "fixed",
backgroundColor: "white",
borderRadius: 15,
boxShadow: "0 0 5px gray",
padding: 25,
top: menuBarTop,
left: menuBarLeft,
display: "flex",
justifyContent: "center",
alignItems: "center"
}}
onMouseDown={(e) => {
if (e.currentTarget === e.target) {
mouseDownMenuBar = true
mouseMenuBarOffsetX = e.pageX - e.currentTarget.getBoundingClientRect().left
mouseMenuBarOffsetY = e.pageY - e.currentTarget.getBoundingClientRect().top
}
hintContext.clearRect(0, 0, p.width, p.height)
setShowTextInput(false)
}}
onMouseUp={(e) => {
mouseDownMenuBar = false
}}
onDoubleClick={() => {
setMenuBarShown(!menuBarShown)
}}
>
<div style={{
display: "flex",
justifyContent: "flex-start",
alignItems: "center",
flexDirection: "column",
pointerEvents: "none"
}}>
<div style={{
pointerEvents: "none"
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="30" height="30" fill="currentColor"
className="bi bi-grip-horizontal" viewBox="0 0 16 16">
<path
d="M2 8a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm0-3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm3 3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm0-3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm3 3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm0-3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm3 3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm0-3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm3 3a1 1 0 1 1 0 2 1 1 0 0 1 0-2zm0-3a1 1 0 1 1 0 2 1 1 0 0 1 0-2z"/>
</svg>
</div>
<div style={{
display: menuBarShown ? "flex" : "none",
justifyContent: "center",
alignItems: "center",
pointerEvents: "none"
}}>
{/*stroke width*/}
<div style={{
display: "flex",
flexDirection: "column",
justifyContent: "center",
gap: 5,
alignItems: "center",
pointerEvents: "none"
}}>
<div style={{
display: "flex",
flexDirection: "row",
}}>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-pencil-fill" viewBox="0 0 16 16">
<path
d="M12.854.146a.5.5 0 0 0-.707 0L10.5 1.793 14.207 5.5l1.647-1.646a.5.5 0 0 0 0-.708l-3-3zm.646 6.061L9.793 2.5 3.293 9H3.5a.5.5 0 0 1 .5.5v.5h.5a.5.5 0 0 1 .5.5v.5h.5a.5.5 0 0 1 .5.5v.5h.5a.5.5 0 0 1 .5.5v.207l6.5-6.5zm-7.468 7.468A.5.5 0 0 1 6 13.5V13h-.5a.5.5 0 0 1-.5-.5V12h-.5a.5.5 0 0 1-.5-.5V11h-.5a.5.5 0 0 1-.5-.5V10h-.5a.499.499 0 0 1-.175-.032l-.179.178a.5.5 0 0 0-.11.168l-2 5a.5.5 0 0 0 .65.65l5-2a.5.5 0 0 0 .168-.11l.178-.178z"/>
</svg>
<input type={"radio"} name={"tool"} value={"pencil"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "pencil"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-eraser-fill" viewBox="0 0 16 16">
<path
d="M8.086 2.207a2 2 0 0 1 2.828 0l3.879 3.879a2 2 0 0 1 0 2.828l-5.5 5.5A2 2 0 0 1 7.879 15H5.12a2 2 0 0 1-1.414-.586l-2.5-2.5a2 2 0 0 1 0-2.828l6.879-6.879zm.66 11.34L3.453 8.254 1.914 9.793a1 1 0 0 0 0 1.414l2.5 2.5a1 1 0 0 0 .707.293H7.88a1 1 0 0 0 .707-.293l.16-.16z"/>
</svg>
<input type={"radio"} value={"eraser"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "eraser"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-circle" viewBox="0 0 16 16">
<path
d="M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14zm0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16z"/>
</svg>
<input type={"radio"} value={"circle"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "circle"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-square" viewBox="0 0 16 16">
<path
d="M14 1a1 1 0 0 1 1 1v12a1 1 0 0 1-1 1H2a1 1 0 0 1-1-1V2a1 1 0 0 1 1-1h12zM2 0a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V2a2 2 0 0 0-2-2H2z"/>
</svg>
<input type={"radio"} value={"rect"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "rect"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-dash" viewBox="0 0 16 16">
<path d="M4 8a.5.5 0 0 1 .5-.5h7a.5.5 0 0 1 0 1h-7A.5.5 0 0 1 4 8z"/>
</svg>
<input type={"radio"} value={"line"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "line"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-fonts" viewBox="0 0 16 16">
<path
d="M12.258 3h-8.51l-.083 2.46h.479c.26-1.544.758-1.783 2.693-1.845l.424-.013v7.827c0 .663-.144.82-1.3.923v.52h4.082v-.52c-1.162-.103-1.306-.26-1.306-.923V3.602l.431.013c1.934.062 2.434.301 2.693 1.846h.479L12.258 3z"/>
</svg>
<input type={"radio"} value={"text"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "text"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-x-lg" viewBox="0 0 16 16">
<path
d="M2.146 2.854a.5.5 0 1 1 .708-.708L8 7.293l5.146-5.147a.5.5 0 0 1 .708.708L8.707 8l5.147 5.146a.5.5 0 0 1-.708.708L8 8.707l-5.146 5.147a.5.5 0 0 1-.708-.708L7.293 8 2.146 2.854Z"/>
</svg>
<input type={"radio"} value={"selector"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "selector"} onChange={e => {
handleToolChange(e)
}}/>
</div>
<div style={{
display: "flex",
flexDirection: "column",
alignItems: "center",
justifyContent: "flex-end",
gap: 10
}}>
<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
className="bi bi-arrows-move" viewBox="0 0 16 16">
<path fill-rule="evenodd"
d="M7.646.146a.5.5 0 0 1 .708 0l2 2a.5.5 0 0 1-.708.708L8.5 1.707V5.5a.5.5 0 0 1-1 0V1.707L6.354 2.854a.5.5 0 1 1-.708-.708l2-2zM8 10a.5.5 0 0 1 .5.5v3.793l1.146-1.147a.5.5 0 0 1 .708.708l-2 2a.5.5 0 0 1-.708 0l-2-2a.5.5 0 0 1 .708-.708L7.5 14.293V10.5A.5.5 0 0 1 8 10zM.146 8.354a.5.5 0 0 1 0-.708l2-2a.5.5 0 1 1 .708.708L1.707 7.5H5.5a.5.5 0 0 1 0 1H1.707l1.147 1.146a.5.5 0 0 1-.708.708l-2-2zM10 8a.5.5 0 0 1 .5-.5h3.793l-1.147-1.146a.5.5 0 0 1 .708-.708l2 2a.5.5 0 0 1 0 .708l-2 2a.5.5 0 0 1-.708-.708L14.293 8.5H10.5A.5.5 0 0 1 10 8z"/>
</svg>
<input type={"radio"} value={"mover"} name={"tool"}
style={{width: 20, height: 20, pointerEvents: "auto"}}
checked={selectedTool === "mover"} onChange={e => {
handleToolChange(e)
}}/>
</div>
</div>
<input type={"range"} min={1} max={40} value={strokeWidthSliderValue} onChange={e => {
setStrokeWidthSliderValue(e.currentTarget.value)
strokeWidth = e.currentTarget.value
if (selectedTool === "pencil") {
lastStrokeWidthPencil = strokeWidth
} else if (selectedTool === "eraser") {
lastStrokeWidthEraser = strokeWidth;
} else if (selectedTool === "rect") {
lastStrokeWidthRect = strokeWidth;
} else if (selectedTool === "circle") {
lastStrokeWidthCircle = strokeWidth
} else if (selectedTool === "line") {
lastStrokeWidthLine = strokeWidth
}
}} style={{
pointerEvents: "auto",
display: ((selectedTool === "selector" || selectedTool === "text" || selectedTool === "mover") ? "none" : "block")
}}/>
<p style={{
userSelect: "none",
display: ((selectedTool === "selector" || selectedTool === "text" || selectedTool === "mover") ? "none" : "block")
}}>{strokeWidthSliderValue}</p>
</div>
{/*Color Selector*/}
<input type={"color"}
style={{
pointerEvents: "auto",
borderWidth: 0,
borderRadius: 5,
boxShadow: "0 0 5px gray",
marginLeft: 100
}} onChange={e => {
setColorValue(e.target.value)
}} value={colorValue}/>
<div style={{
display: "flex",
flexDirection: "column",
justifyContent: "center",
alignItems: "center",
gap: 5
}}>
{/*open button*/}
<button style={{
padding: 10,
backgroundColor: "white",
borderRadius: 15,
marginLeft: 10,
boxShadow: "0 0 5px gray",
borderWidth: 0,
width: 60,
pointerEvents: "auto"
}}
onClick={onOpenButtonClick}>
Open
</button>
<input onChange={() => {
let file = fileInput.files[0]
let reader = new FileReader()
reader.onload = e => {
let image = new Image()
image.onload = () => {
context.clearRect(0, 0, p.width, p.height)
context.drawImage(image, 0, 0)
}
image.src = e.target.result
}
reader.readAsText(file)
}} id={"fileInput"} type={"file"} accept={".redraw"} style={{pointerEvents: "auto", display: "none"}}/>
{/*save button*/}
<button style={{
padding: 10,
backgroundColor: "white",
borderRadius: 15,
marginLeft: 10,
boxShadow: "0 0 5px gray",
borderWidth: 0,
width: 60,
pointerEvents: "auto"
}}
onClick={onSaveButtonClick}>
Save
</button>
{/*export button*/}
<button style={{
padding: 10,
backgroundColor: "white",
borderRadius: 15,
marginLeft: 10,
boxShadow: "0 0 5px gray",
borderWidth: 0,
width: 60,
pointerEvents: "auto"
}}
onClick={onExportButtonClick}>
Export
</button>
{/*home button*/}
<button style={{
padding: 10,
backgroundColor: "white",
borderRadius: 15,
marginLeft: 10,
boxShadow: "0 0 5px gray",
borderWidth: 0,
width: 60,
pointerEvents: "auto"
}}
onClick={() => {
window.location.reload()
}}>
Home
</button>
</div>
</div>
</div>
</div>
</div>
);
}
src/StartForm.js
+77
View File
@@ -0,0 +1,77 @@
import {useEffect} from "react";
let inputWidth, inputHeight
export default function StartForm(p) {
useEffect(() => {
if(p.show !== "none") {
inputWidth = document.getElementById("inputWidth")
inputHeight = document.getElementById("inputHeight")
}
}, [])
useEffect(() => {
let body = document.querySelector("body")
body.style.background = "white"
})
return (
<div style={{
display: p.show,
width: "100vw",
height: "100vh",
justifyContent: "center",
alignItems: "center"
}}>
<div style={{
width: 800,
height: 600,
borderRadius: 15,
boxShadow: "0 0 5px gray",
display: "flex",
flexDirection: "column",
justifyContent: "space-around",
alignItems: "center"
}}>
<h2>Welcome To ReDraw</h2>
<h3>Specify your drawing canvas width and height</h3>
<div style={{
display: "flex",
flexDirection: "column",
gap: 20
}}>
<div style={{
display: "flex",
justifyContent: "center",
alignItems: "center",
gap: 20
}}>
<input id={"inputWidth"} name={"dim"} type={"number"} placeholder={"Width"}
style={{boxShadow: "0 0 5px gray", borderWidth: 0, borderRadius: 15, padding: 10}}
required={true}></input>
<input id={"inputHeight"} name={"dim"} type={"number"} placeholder={"Height"}
style={{boxShadow: "0 0 5px gray", borderWidth: 0, borderRadius: 15, padding: 10}}
required={true}></input>
</div>
<button onClick={() => {
if (inputWidth.value !== "" && inputHeight.value !== "") {
p.onCreateCanvas(inputWidth, inputHeight)
}
}}
style={{
boxShadow: "0 0 5px gray",
borderWidth: 0,
borderRadius: 15,
padding: 10,
background: "rgba(0, 0, 0, 0)"
}}>Create</button>
</div>
<h4>Please note that ReDraw is still in beta and will not guarantee correctness</h4>
</div>
</div>
);
}
src/index.css
+1 -1
View File
@@ -5,7 +5,7 @@ body {
sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
background-color: rgb(255, 255, 255);
background-color: rgb(200, 200, 200);
}
code {