separated js to file
This commit is contained in:
parent
a8c32d7051
commit
17d17e95c9
|
|
@ -0,0 +1,267 @@
|
|||
const socket = new WebSocket("ws://localhost:7865");
|
||||
var canvas = document.getElementById("board");
|
||||
var colorInput = document.getElementById("color");
|
||||
var canvasHidden = document.getElementById("hidden");
|
||||
var ctx = canvas.getContext("2d");
|
||||
var ctx2 = canvasHidden.getContext("2d");
|
||||
var currentColor = "#000000"
|
||||
canvas.width = 1920;
|
||||
canvas.height = 1080;
|
||||
canvasHidden.width = 1920;
|
||||
canvasHidden.height = 1080;
|
||||
var imgData = ctx2.createImageData(canvasHidden.width, canvasHidden.height)
|
||||
|
||||
function drawPixel(x, y, color) {
|
||||
let pixelNumber;
|
||||
if (y > 0)
|
||||
pixelNumber = (y) * canvas.width + x
|
||||
if (y == 0)
|
||||
pixelNumber = x
|
||||
if (color == undefined) rgbColor = hexToRgb(currentColor);
|
||||
for (let l = 0; l < 4; l ++)
|
||||
for (let l = 0; l < 5; l ++){
|
||||
imgData.data[pixelNumber + 0] = color == undefined? rgbColor.r : color.r;
|
||||
imgData.data[pixelNumber + 1] = color == undefined? rgbColor.g : color.g;
|
||||
imgData.data[pixelNumber + 2] = color == undefined? rgbColor.b : color.b;
|
||||
imgData.data[pixelNumber + 3] = 255;
|
||||
}
|
||||
|
||||
redraw();
|
||||
}
|
||||
|
||||
function redraw() {
|
||||
ctx.save();
|
||||
ctx.setTransform(1,0,0,1,0,0);
|
||||
ctx.clearRect(0,0,canvas.width,canvas.height);
|
||||
ctx.restore();
|
||||
|
||||
ctx2.putImageData(imgData, 0, 0);
|
||||
ctx.drawImage(canvasHidden, 0, 0)
|
||||
ctx.imageSmoothingEnabled = false
|
||||
}
|
||||
|
||||
socket.addEventListener("open", (event) => {
|
||||
socket.send("{\"code\":0}");
|
||||
});
|
||||
|
||||
socket.addEventListener("message", (event) => {
|
||||
// console.log("Message from server ", JSON.stringify(event.data.toString()));
|
||||
event.data.text().then(function(packet){
|
||||
packet = JSON.parse(packet)
|
||||
let code = packet.code
|
||||
let content = packet.content
|
||||
switch (code){
|
||||
case 0:
|
||||
//Ineffective way to do that, fix that later ;)
|
||||
let converted = Uint8ClampedArray.from(content)
|
||||
|
||||
for (let i = 0; i < converted.length; i ++)
|
||||
imgData.data[i] = converted[i]
|
||||
redraw();
|
||||
break;
|
||||
case 1:
|
||||
contentJson = JSON.parse(content);
|
||||
let color = {
|
||||
r: contentJson.r,
|
||||
g: contentJson.g,
|
||||
b: contentJson.b
|
||||
}
|
||||
|
||||
drawPixel(contentJson.x * 4, contentJson.y * 4, color)
|
||||
redraw();
|
||||
break;
|
||||
}
|
||||
});
|
||||
});
|
||||
|
||||
// All the code that is making zooms and moving around cavnas is made with big help of http://phrogz.net/tmp/canvas_zoom_to_cursor.html. Thanks alot!
|
||||
window.onload = function() {
|
||||
var ctx = canvas.getContext("2d");
|
||||
trackTransforms(ctx);
|
||||
|
||||
var lastX=canvas.width/2, lastY=canvas.height/2;
|
||||
var dragStart,dragged;
|
||||
canvas.addEventListener('mousedown',function(evt){
|
||||
if (evt.button == 1 || 1 == evt.button&2){
|
||||
document.body.style.mozUserSelect = document.body.style.webkitUserSelect = document.body.style.userSelect = 'none';
|
||||
lastX = evt.offsetX || (evt.pageX - canvas.offsetLeft);
|
||||
lastY = evt.offsetY || (evt.pageY - canvas.offsetTop);
|
||||
dragStart = ctx.transformedPoint(lastX,lastY);
|
||||
dragged = false;
|
||||
}
|
||||
},false);
|
||||
canvas.addEventListener('mousemove',function(evt){
|
||||
lastX = evt.offsetX || (evt.pageX - canvas.offsetLeft);
|
||||
lastY = evt.offsetY || (evt.pageY - canvas.offsetTop);
|
||||
dragged = true;
|
||||
if (dragStart){
|
||||
var pt = ctx.transformedPoint(lastX,lastY);
|
||||
ctx.translate(pt.x-dragStart.x,pt.y-dragStart.y);
|
||||
redraw();
|
||||
}
|
||||
},false);
|
||||
canvas.addEventListener('mouseup',function(evt){
|
||||
if (evt.button == 1 || 1 == evt.button&2){
|
||||
dragStart = null;
|
||||
if (dragged) {
|
||||
|
||||
let point = ctx.transformedPoint(
|
||||
evt.clientX - canvas.offsetLeft,
|
||||
evt.clientY - canvas.offsetTop
|
||||
);
|
||||
} else {
|
||||
let point = {
|
||||
x: Math.floor(ctx.transformedPoint(lastX,lastY).x) * 4,
|
||||
y: Math.floor(ctx.transformedPoint(lastX,lastY).y) * 4,
|
||||
};
|
||||
x = point.x; y = point.y;
|
||||
let pixelNumber;
|
||||
if (y > 0)
|
||||
pixelNumber = (y) * canvas.width + x
|
||||
if (y == 0)
|
||||
pixelNumber = x
|
||||
|
||||
let color = {
|
||||
r: imgData.data[pixelNumber + 0],
|
||||
g: imgData.data[pixelNumber + 1],
|
||||
b: imgData.data[pixelNumber + 2]
|
||||
};
|
||||
|
||||
changeColor(rgbToHex(color.r, color.g, color.b));
|
||||
}
|
||||
} else if (evt.button == 0) {
|
||||
let point = {
|
||||
x: Math.floor(ctx.transformedPoint(lastX,lastY).x) * 4,
|
||||
y: Math.floor(ctx.transformedPoint(lastX,lastY).y) * 4,
|
||||
};
|
||||
let rgbColor = hexToRgb(currentColor);
|
||||
let pixel = JSON.stringify({
|
||||
"x": `${point.x/4}`,
|
||||
"y": `${point.y/4}`,
|
||||
"r": `${rgbColor.r}`,
|
||||
"g": `${rgbColor.g}`,
|
||||
"b": `${rgbColor.b}`
|
||||
});
|
||||
let packet = {
|
||||
"code": 1,
|
||||
"content": pixel
|
||||
}
|
||||
socket.send(JSON.stringify(packet));
|
||||
// console.log(`{\"code\":1, \"content\":${pixel}}`)
|
||||
|
||||
drawPixel(point.x, point.y, undefined);
|
||||
}
|
||||
},false);
|
||||
|
||||
var scaleFactor = 1.1;
|
||||
var zoom = function(clicks){
|
||||
var pt = ctx.transformedPoint(lastX,lastY);
|
||||
ctx.translate(pt.x,pt.y);
|
||||
var factor = Math.pow(scaleFactor,clicks);
|
||||
ctx.scale(factor,factor);
|
||||
ctx.translate(-pt.x,-pt.y);
|
||||
redraw();
|
||||
}
|
||||
|
||||
var handleScroll = function(evt){
|
||||
var delta = evt.wheelDelta ? evt.wheelDelta/40 : evt.detail ? -evt.detail : 0;
|
||||
if (delta) zoom(delta);
|
||||
return evt.preventDefault() && false;
|
||||
};
|
||||
canvas.addEventListener('DOMMouseScroll',handleScroll,false);
|
||||
canvas.addEventListener('mousewheel',handleScroll,false);
|
||||
};
|
||||
|
||||
function evaulatePixelNumber(x, y) {
|
||||
let pixelNumber;
|
||||
if (y > 0)
|
||||
pixelNumber = (y) * canvas.width + x
|
||||
if (y == 0)
|
||||
pixelNumber = x
|
||||
return pixelNumber
|
||||
}
|
||||
function changeColor(color) {
|
||||
if (color == undefined) currentColor = colorInput.value;
|
||||
else {
|
||||
currentColor = color
|
||||
colorInput.value = color
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//Code from https://stackoverflow.com/questions/5623838/rgb-to-hex-and-hex-to-rgb#5624139
|
||||
function hexToRgb(hex) {
|
||||
// Expand shorthand form (e.g. "03F") to full form (e.g. "0033FF")
|
||||
var shorthandRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i;
|
||||
hex = hex.replace(shorthandRegex, function(m, r, g, b) {
|
||||
return r + r + g + g + b + b;
|
||||
});
|
||||
|
||||
var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
|
||||
return result ? {
|
||||
r: parseInt(result[1], 16),
|
||||
g: parseInt(result[2], 16),
|
||||
b: parseInt(result[3], 16)
|
||||
} : null;
|
||||
}
|
||||
|
||||
const rgbToHex = (r, g, b) => '#' + [r, g, b].map(x => {
|
||||
const hex = x.toString(16)
|
||||
return hex.length === 1 ? '0' + hex : hex
|
||||
}).join('')
|
||||
|
||||
function trackTransforms(ctx){
|
||||
var svg = document.createElementNS("http://www.w3.org/2000/svg",'svg');
|
||||
var xform = svg.createSVGMatrix();
|
||||
ctx.getTransform = function(){ return xform; };
|
||||
|
||||
var savedTransforms = [];
|
||||
var save = ctx.save;
|
||||
ctx.save = function(){
|
||||
savedTransforms.push(xform.translate(0,0));
|
||||
return save.call(ctx);
|
||||
};
|
||||
var restore = ctx.restore;
|
||||
ctx.restore = function(){
|
||||
xform = savedTransforms.pop();
|
||||
return restore.call(ctx);
|
||||
};
|
||||
|
||||
var scale = ctx.scale;
|
||||
ctx.scale = function(sx,sy){
|
||||
xform = xform.scaleNonUniform(sx,sy);
|
||||
return scale.call(ctx,sx,sy);
|
||||
};
|
||||
var rotate = ctx.rotate;
|
||||
ctx.rotate = function(radians){
|
||||
xform = xform.rotate(radians*180/Math.PI);
|
||||
return rotate.call(ctx,radians);
|
||||
};
|
||||
var translate = ctx.translate;
|
||||
ctx.translate = function(dx,dy){
|
||||
xform = xform.translate(dx,dy);
|
||||
return translate.call(ctx,dx,dy);
|
||||
};
|
||||
var transform = ctx.transform;
|
||||
ctx.transform = function(a,b,c,d,e,f){
|
||||
var m2 = svg.createSVGMatrix();
|
||||
m2.a=a; m2.b=b; m2.c=c; m2.d=d; m2.e=e; m2.f=f;
|
||||
xform = xform.multiply(m2);
|
||||
return transform.call(ctx,a,b,c,d,e,f);
|
||||
};
|
||||
var setTransform = ctx.setTransform;
|
||||
ctx.setTransform = function(a,b,c,d,e,f){
|
||||
xform.a = a;
|
||||
xform.b = b;
|
||||
xform.c = c;
|
||||
xform.d = d;
|
||||
xform.e = e;
|
||||
xform.f = f;
|
||||
return setTransform.call(ctx,a,b,c,d,e,f);
|
||||
};
|
||||
var pt = svg.createSVGPoint();
|
||||
ctx.transformedPoint = function(x,y){
|
||||
pt.x=x; pt.y=y;
|
||||
return pt.matrixTransform(xform.inverse());
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue