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canvasHW done

Vadym Hlushko 3 years ago
parent
15d9cadda1
commit
0f7c7d4a2e
4 changed files with 356 additions and 2 deletions
Unified View Show Diff Stats
  1. 30 0
      canvasHW/index.html
  2. 28 0
      canvasHW/main.css
  3. 298 0
      canvasHW/main.js
  4. 0 2
      shopGQL/main.js

+ 30 - 0
canvasHW/index.html
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@@ -0,0 +1,30 @@
 
+<!DOCTYPE html>
 
+<html>
 
+    <head>
 
+        <meta charset="utf-8">
 
+        <meta name="viewport" content="width=device-width">
 
+        <title>eval</title>
 
+        <link href="main.css" rel="stylesheet" type="text/css" />
 
+        <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
 
+        <script src="https://cdnjs.cloudflare.com/ajax/libs/PapaParse/4.1.3/papaparse.min.js"></script>
 
+        <script src="http://gitlab.a-level.com.ua/gitgod/nanobind/raw/master/static/nb.js"></script>
 
+    </head>
 
+    <body>
 
+        <main id="mainCanvas">
 
+        <canvas id='canvas' width=1200 height=450></canvas> 
+        </main> 
+        <button id='undo'>UNDO</button>
 
+        <input type='color' id='color'>
 
+        <select id='tool'>
 
+            <option value='graffity'>Graffity</option>
 
+            <option value='circle'>Circle</option>
 
+            <option value='line'>Line</option>
 
+            <option value="rectangle">Rectangle</option>
 
+            <option value="elipse">Elipse</option>
 
+            <option value='select'>Select</option>
 
+        </select>
 
+        <input type='number' id='size' value=10>
 
+        <button id='delete'>Delete...</button>
 
+        <script src="main.js"></script>
 
+    </body>
 
+</html>

+ 28 - 0
canvasHW/main.css
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@@ -0,0 +1,28 @@
 
+* {
 
+    box-sizing: border-box;   
+    margin: 0;
 
+    padding: 0;
 
+}
 
+
 
+body {
 
+    margin: 0;
 
+    padding: 0;
 
+}
 
+
 
+ button{
 
+    width: 100%;
 
+    font-size: 2em;
 
+}
 
+input, button, select{
 
+    width: 100%;
 
+    font-size: 2em;
 
+}
 
+
 
+table {
 
+    border: 1px;
 
+    border-collapse: collapse;
 
+}
 
+
 
+td,th {
 
+    border: 1px solid black;
 
+}

+ 298 - 0
canvasHW/main.js
View File 

@@ -0,0 +1,298 @@
 
+const canvas = document.getElementById('canvas')
 
+const ctx    = canvas.getContext('2d')
 
+
 
+const width  = canvas.width;
 
+const height = canvas.height;
 
+
 
+let current;
 
+let selection = []
 
+
 
+const tools = {
 
+    graffity: {
 
+        mousemove(e){ //e.buttons 0b00000x11 & 0b00000100 == x
 
+            (e.buttons & 1) && new Circle(e.clientX, e.clientY, +size.value, color.value)
 
+        }
 
+    },
 
+    circle: {
 
+        mousedown(e){
 
+            current = new Circle(e.clientX,e.clientY, 1, color.value)
 
+        },
 
+        mousemove(e){
 
+            if (!current) return;
 
+
 
+            current.radius = current.distanceTo(e.clientX, e.clientY)
 
+            Drawable.drawAll()
 
+        },
 
+
 
+        mouseup(e){
 
+            current = null
 
+        }
 
+    },
 
+    elipse: {
 
+        mousedown(e){
 
+            current = new Elipse(e.clientX,e.clientY, 1,1, color.value)
 
+        },
 
+        mousemove(e){
 
+            if (!current) return;
 
+            var width = e.clientX - current.x;
 
+            var height = e.clientY - current.y;
 
+            current.width = width ? width : width * -1;
 
+            current.height = height ? height : height * -1;
 
+            Drawable.drawAll()
 
+        },
 
+
 
+        mouseup(e){
 
+            current = null
 
+        }
 
+    },
 
+    line: {
 
+        mousedown(e){
 
+            current = new Line(e.clientX, e.clientY, 0, 0, color.value, +size.value)
 
+        },
 
+        mousemove(e){
 
+            if (!current) return;
 
+
 
+            current.width = e.clientX - current.x
 
+            current.height = e.clientY - current.y
 
+
 
+            Drawable.drawAll()
 
+        },
 
+
 
+        mouseup(e){
 
+            current = null
 
+        }
 
+    },
 
+    rectangle : {
 
+        mousedown(e){
 
+            current = new Rectangle(e.clientX, e.clientY, 0, 0, color.value, +size.value)
 
+        },
 
+        mousemove(e){
 
+            if (!current) return;
 
+
 
+            current.width = e.clientX - current.x
 
+            current.height = e.clientY - current.y
 
+
 
+            Drawable.drawAll()
 
+        },
 
+
 
+        mouseup(e){
 
+            current = null
 
+        }
 
+    },
 
+    select: {
 
+        click(e){
 
+            console.log(e)
 
+            let found = Drawable.instances.filter(c => c.in && c.in(e.clientX, e.clientY))
 
+            if (found.length){
 
+                if (e.ctrlKey){
 
+                    selection.push(found.pop())
 
+                }
 
+                else {
 
+                    selection = [found.pop()]
 
+                }
 
+            }
 
+            else {
 
+                if (!e.ctrlKey) selection = []
 
+            }
 
+
 
+            Drawable.drawAll(selection)
 
+        },
 
+        mousedown(e){
 
+            //
 
+        },
 
+        mousemove(e){
 
+
 
+        },
 
+
 
+        mouseup(e){
 
+            //x,y, w, h прямоугольника
 
+            //selection - только те элеменеты Drawable.instances которые в границах прямоугольника.
 
+        },
 
+    }
 
+}
 
+
 
+
 
+
 
+function superHandler(evt){
 
+    let t = tools[tool.value]
 
+    if (typeof t[evt.type] === 'function')
 
+        t[evt.type].call(this, evt)
 
+}
 
+
 
+canvas.onmousemove = superHandler
 
+canvas.onmouseup   = superHandler
 
+canvas.onmousedown = superHandler
 
+canvas.onclick = superHandler
 
+
 
+////
 
+
 
+
 
+function Drawable(){
 
+   Drawable.addInstance(this);   
+}
 
+
 
+const distance = (x1,y1, x2, y2) => ((x1-x2)**2 + (y1-y2)**2)**0.5
 
+
 
+Drawable.prototype.draw = function(){};
 
+Drawable.prototype.distanceTo = function(x,y){
 
+    if (typeof this.x !== 'number' ||
 
+        typeof this.y !== 'number'){
 
+        return NaN
 
+    }
 
+    return distance(this.x, this.y, x, y)
 
+};
 
+Drawable.instances = [];
 
+Drawable.addInstance = function(item){
 
+    Drawable.instances.push(item);
 
+}
 
+
 
+Drawable.drawAll = function(selection=[]){
 
+    ctx.clearRect(0,0,width,height);
 
+    Drawable.forAll(item => item.draw())
 
+    selection.forEach(item  => item.draw(true))
 
+}
 
+
 
+Drawable.forAll = function(callback){
 
+    for(var i = 0; i<Drawable.instances.length;i++){
 
+        callback(Drawable.instances[i])
 
+    }
 
+}
 
+
 
+class Circle extends Drawable {
 
+    constructor(x,y,radius, color){
 
+        super()
 
+        this.x      = x;
 
+        this.y      = y;
 
+        this.radius = radius;
 
+        this.color  = color;
 
+
 
+        this.draw(); 
+    }
 
+
 
+    draw(selected){
 
+        ctx.beginPath();
 
+        ctx.arc(this.x, this.y, this.radius, 0, 2 * Math.PI);
 
+        ctx.closePath();
 
+        ctx.fillStyle = this.color;
 
+        if (selected){
 
+            ctx.lineWidth = 2
 
+            ctx.stroke();
 
+        }
 
+        ctx.fill();
 
+    }
 
+
 
+    in(x,y){
 
+        return this.distanceTo(x,y) < this.radius
 
+    }
 
+
 
+    inBounds(x,y,w,h){ // x = 100, this.x = 102, w = 5
 
+        return this.x >= x && this.x <= x + w &&
 
+               this.y >= y && this.y <= y + h 
+    }
 
+}
 
+
 
+class Elipse extends Drawable {
 
+    constructor(x,y,width,height,color){
 
+        super()
 
+        this.x      = x ? x : x*-1;
 
+        this.y      = y ? y : y*-1;
 
+        this.width  = width;
 
+        this.height = height;
 
+        this.color  = color;
 
+
 
+        this.draw(); 
+    }
 
+
 
+    draw(){
 
+        this.width = this.width > 0 ? this.width : this.width * (-1);
 
+        this.height = this.height > 0 ? this.height : this.height * (-1);
 
+        ctx.beginPath();
 
+        ctx.moveTo(this.x, this.y);
 
+        ctx.ellipse(this.x, this.y, this.height, this.width,  Math.PI / 2, 0, 2 * Math.PI);
 
+        ctx.closePath();
 
+        ctx.fillStyle = this.color;
 
+        ctx.fill();
 
+    }
 
+
 
+    in(x,y){
 
+        return this.distanceTo(x,y) < this.radius
 
+    }
 
+
 
+    inBounds(x,y,w,h){ // x = 100, this.x = 102, w = 5
 
+        return this.x >= x && this.x <= x + w &&
 
+               this.y >= y && this.y <= y + h 
+    }
 
+}
 
+
 
+
 
+
 
+
 
+class Line extends Drawable {
 
+    constructor(x,y, width, height, color, lineWidth){
 
+        super()
 
+        this.x      = x;
 
+        this.y      = y;
 
+        this.width  = width;
 
+        this.height = height;
 
+        this.color  = color;
 
+        this.lineWidth  = lineWidth;
 
+
 
+        this.draw(); 
+    }
 
+    
+
 
+    draw(){
 
+        ctx.beginPath();
 
+        ctx.moveTo(this.x, this.y);
 
+        ctx.lineTo(this.x + this.width, this.y + this.height);
 
+        ctx.closePath();
 
+        ctx.strokeStyle = this.color;
 
+        ctx.lineWidth   = this.lineWidth
 
+        ctx.stroke();
 
+    }
 
+}
 
+
 
+class Rectangle extends Drawable {
 
+    constructor(x,y, width, height, color, lineWidth){
 
+        super()
 
+        this.x      = x;
 
+        this.y      = y;
 
+        this.width  = width;
 
+        this.height = height;
 
+        this.color  = color;
 
+        this.lineWidth  = lineWidth;
 
+        this.draw(); 
+    }
 
+    
+
 
+    draw(){
 
+        ctx.beginPath();
 
+        ctx.rect(this.x , this.y ,this.width,this.height);
 
+        ctx.fillStyle = this.color;
 
+        ctx.fill();
 
+    }
 
+}
 
+
 
+color.onchange = () => {
 
+    selection.forEach(c => c.color = color.value)
 
+    Drawable.drawAll(selection)
 
+}
 
+
 
+document.getElementById('delete').onclick = () =>{
 
+    Drawable.instances = Drawable.instances.filter(item => !selection.includes(item))
 
+    selection = []
 
+    Drawable.drawAll()
 
+}
 
+
 
+
 
+//new Line(0,0,100,100, "red")
 
+////new Circle(30,30,10, "red")
 
+
 
+////canvas.onmousemove = function(e){
 
+////}
 
+
 
+undo.onclick = function(){
 
+    Drawable.instances.pop()
 
+    //Drawable.instances = []
 
+    Drawable.drawAll()
 
+}

+ 0 - 2
shopGQL/main.js
View File 

@@ -601,7 +601,6 @@ actionFullRegister = (login,password) => async dispatch => {
 
 }
 
 }
 
 
 
         let pLog = document.createElement('p')
 
         let pLog = document.createElement('p')
 
-       
         pLog.style.float = 'right'
 
         pLog.style.float = 'right'
 
         pLog.style.fontWeight = 'bold'
 
         pLog.style.fontWeight = 'bold'
 
         pLog.style.marginTop = '20px'
 
         pLog.style.marginTop = '20px'
 
@@ -637,7 +636,6 @@ let newOrder = async(obj) => {
 
       }
 
       }
 
       
       
       let result = await shopGQL(query,qVariables)
 
       let result = await shopGQL(query,qVariables)
 
-      console.log(result)
 
       return result
 
       return result
 
 }
 
 }