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A Pen by Vlad Akilov.
<script>
!function(t,e){"function"==typeof define&&define.amd?define(e):"object"==typeof exports?module.exports=e():t.imagine=e()}(this,function(){var t,e,i;return function(n){function o(t,e){return m.call(t,e)}function s(t,e){var i,n,o,s,r,a,c,p,h,u,f,l=e&&e.split("/"),d=y.map,v=d&&d["*"]||{};if(t&&"."===t.charAt(0))if(e){for(l=l.slice(0,l.length-1),t=t.split("/"),r=t.length-1,y.nodeIdCompat&&j.test(t[r])&&(t[r]=t[r].replace(j,"")),t=l.concat(t),h=0;h<t.length;h+=1)if(f=t[h],"."===f)t.splice(h,1),h-=1;else if(".."===f){if(1===h&&(".."===t[2]||".."===t[0]))break;h>0&&(t.splice(h-1,2),h-=2)}t=t.join("/")}else 0===t.indexOf("./")&&(t=t.substring(2));if((l||v)&&d){for(i=t.split("/"),h=i.length;h>0;h-=1){if(n=i.slice(0,h).join("/"),l)for(u=l.length;u>0;u-=1)if(o=d[l.slice(0,u).join("/")],o&&(o=o[n])){s=o,a=h;break}if(s)break;!c&&v&&v[n]&&(c=v[n],p=h)}!s&&c&&(s=c,a=p),s&&(i.splice(0,a,s),t=i.join("/"))}return t}function r(t,e){return function(){return l.apply(n,O.call(arguments,0).concat([t,e]))}}function a(t){return function(e){return s(e,t)}}function c(t){return function(e){b[t]=e}}function p(t){if(o(g,t)){var e=g[t];delete g[t],w[t]=!0,f.apply(n,e)}if(!o(b,t)&&!o(w,t))throw new Error("No "+t);return b[t]}function h(t){var e,i=t?t.indexOf("!"):-1;return i>-1&&(e=t.substring(0,i),t=t.substring(i+1,t.length)),[e,t]}function u(t){return function(){return y&&y.config&&y.config[t]||{}}}var f,l,d,v,b={},g={},y={},w={},m=Object.prototype.hasOwnProperty,O=[].slice,j=/\.js$/;d=function(t,e){var i,n=h(t),o=n[0];return t=n[1],o&&(o=s(o,e),i=p(o)),o?t=i&&i.normalize?i.normalize(t,a(e)):s(t,e):(t=s(t,e),n=h(t),o=n[0],t=n[1],o&&(i=p(o))),{f:o?o+"!"+t:t,n:t,pr:o,p:i}},v={require:function(t){return r(t)},exports:function(t){var e=b[t];return"undefined"!=typeof e?e:b[t]={}},module:function(t){return{id:t,uri:"",exports:b[t],config:u(t)}}},f=function(t,e,i,s){var a,h,u,f,l,y,m=[],O=typeof 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l(t)},t._defined=b,i=function(t,e,i){e.splice||(i=e,e=[]),o(b,t)||o(g,t)||(g[t]=[t,e,i])},i.amd={jQuery:!0}}(),i("../bower_components/almond/almond.js",function(){}),function(t,e){"object"==typeof exports&&module?module.exports=e():"function"==typeof i&&i.amd?i("../bower_components/pubsub-js/src/pubsub",e):t.PubSub=e()}("object"==typeof window&&window||this,function(){function t(t){var e;for(e in t)if(t.hasOwnProperty(e))return!0;return!1}function e(t){return function(){throw t}}function i(t,i,n){try{t(i,n)}catch(o){setTimeout(e(o),0)}}function n(t,e,i){t(e,i)}function o(t,e,o,s){var r,a=p[e],c=s?n:i;if(p.hasOwnProperty(e))for(r in a)a.hasOwnProperty(r)&&c(a[r],t,o)}function s(t,e,i){return function(){var n=String(t),s=n.lastIndexOf(".");for(o(t,t,e,i);-1!==s;)n=n.substr(0,s),s=n.lastIndexOf("."),o(t,n,e)}}function r(e){for(var i=String(e),n=Boolean(p.hasOwnProperty(i)&&t(p[i])),o=i.lastIndexOf(".");!n&&-1!==o;)i=i.substr(0,o),o=i.lastIndexOf("."),n=Boolean(p.hasOwnProperty(i)&&t(p[i]));return n}function a(t,e,i,n){var o=s(t,e,n),a=r(t);return a?(i===!0?o():setTimeout(o,0),!0):!1}var c={},p={},h=-1;return c.publish=function(t,e){return a(t,e,!1,c.immediateExceptions)},c.publishSync=function(t,e){return a(t,e,!0,c.immediateExceptions)},c.subscribe=function(t,e){if("function"!=typeof e)return!1;p.hasOwnProperty(t)||(p[t]={});var i="uid_"+String(++h);return p[t][i]=e,i},c.unsubscribe=function(t){var e,i,n,o="string"==typeof t,s=!1;for(e in p)if(p.hasOwnProperty(e)){if(i=p[e],o&&i[t]){delete i[t],s=t;break}if(!o)for(n in i)i.hasOwnProperty(n)&&i[n]===t&&(delete i[n],s=!0)}return s},c}),i("pubsub",["../bower_components/pubsub-js/src/pubsub"],function(t){function e(e,i){return t.publish(e,i)}function i(e,i){return t.subscribe(e,i)}return{publish:e,subscribe:i}}),i("util/mouse",[],function(){function t(t,e){var i=e.getBoundingClientRect();return{x:t.clientX-i.left*(e.width/i.width),y:t.clientY-i.top*(e.height/i.height)}}function e(t,e,i,n){var o,s,r=e.options,a=0,c=0,p=i.width-r.width,h=i.height-r.height;return o=t.x-n.x,o=a>o?a:o>p?p:o,s=t.y-n.y,s=c>s?c:s>h?h:s,{x:o,y:s}}function i(t,e){var i=t.options;return i.left<=e.x&&e.x<=i.left+i.width&&i.top<=e.y&&e.y<=i.top+i.height}function n(t,e){var n,o=-1;for(var s in e){var r=e[s],a=i(r,t);a&&s>o&&(n=s)}return n?e[n]:!1}return{windowToCanvas:t,clampToCanvas:e,isTargetHit:i,getTargetObject:n}}),i("events",["pubsub","util/mouse"],function(t,e){function i(t){var i=e.windowToCanvas(t,this.canvas),n=e.getTargetObject(i,this.canvasObjects);f=n?!0:!1,this.clearActiveObject(),n&&c.apply(this,[t,n]),n&&f&&s.apply(this,[t,n,i,l]),this.canvas.removeEventListener("mousedown",this,!1),window.addEventListener("mouseup",this,!1)}function n(t){var i,n=this.getActiveObject(),o=e.windowToCanvas(t,this.canvas);f&&n&&r.apply(this,[t,n,o,l]),f||(i=e.getTargetObject(o,this.canvasObjects),p.apply(this,[t,i])),n&&n!==i&&!f&&u.apply(this,[t,n])}function o(t){var i=e.windowToCanvas(t,this.canvas),n=e.getTargetObject(i,this.canvasObjects);this.canvas.addEventListener("mousedown",this,!1),window.removeEventListener("mouseup",this,!1),n&&f&&(f=!1,a.apply(this,[t,n])),n&&h.apply(this,[t,n])}function s(e,i,n,o){o.x=n.x-i.options.left,o.y=n.y-i.options.top,window.addEventListener("mousemove",this,!1),t.publish("dragstart",{event:e,object:i})}function r(i,n,o,s){var r=n.options,a=e.clampToCanvas(o,n,this.canvas,s);r.left=a.x,r.top=a.y,t.publish("dragging",{event:i,object:n})}function a(e,i){t.publish("dragend",{event:e,object:i})}function c(e,i){this.setActiveObject(i),i.isActive=!0,t.publish("mousedown",{event:e,object:i})}function p(e,i){this.setActiveObject(i),this.setCursorOnActiveObject(i),t.publish("mouseover",{event:e,object:i})}function h(e,i){t.publish("mouseup",{event:e,object:i})}function u(e,i){t.publish("mouseout",{event:e,object:i})}var f,l={};return{mouseDownListener:i,mouseMoveListener:n,mouseUpListener:o,dragStartObject:s,dragObject:r,dragEndObject:a,mouseDownObject:c,mouseOverObject:p,mouseUpObject:h,mouseOutObject:u}}),i("canvas",["events"],function(t){function e(t){this.id=t,this.canvas=document.getElementById(this.id),this.ctx=this.canvas.getContext("2d"),this.canvas.addEventListener("mousedown",this,!1),window.addEventListener("mousemove",this,!1),this.canvasObjects=[]}return e.prototype.getCanvasId=function(){return this.id},e.prototype.getCanvas=function(){return this.canvas},e.prototype.getContext=function(){return this.ctx},e.prototype.getObjectCount=function(){return this.canvasObjects.length},e.prototype.getActiveObject=function(){return this.activeObject},e.prototype.setActiveObject=function(t){this.activeObject=t},e.prototype.clearActiveObject=function(){for(var t in this.canvasObjects)this.canvasObjects[t].isActive=!1},e.prototype.toDataURL=function(t){return this.canvas.toDataURL(t)},e.prototype.remove=function(t){var e=this.canvasObjects.indexOf(t);return-1!==e&&(this.canvasObjects.splice(e,1),this.reDrawObjects()),this},e.prototype.add=function(t){t.draw(this.ctx),t.options.layer=this.getObjectCount()+1,this.canvasObjects.push(t)},e.prototype.reDrawObjects=function(){this.ctx.clearRect(0,0,this.canvas.width,this.canvas.height);for(var t in this.canvasObjects){var e=this.canvasObjects[t];e.draw(this.ctx)}},e.prototype.setCursorOnActiveObject=function(t){this.canvas.style.cursor=t?"move":"default"},e.prototype.handleEvent=function(e){switch(e.type){case"mousedown":t.mouseDownListener.apply(this,[e]);break;case"mousemove":t.mouseMoveListener.apply(this,[e]);break;case"mouseup":t.mouseUpListener.apply(this,[e])}this.reDrawObjects()},e}),i("shapes/shape",["pubsub"],function(t){function e(){}return e.prototype.initializeOptions=function(t,e){this.isActive=!1,this.options=e||{};for(var i in t)this.options[i]=this.options[i]||t[i]},e.prototype.set=function(t){for(var e in t)this.options[e]=t[e]},e.prototype.drawBorder=function(t){var e=1;t.save(),t.strokeStyle="skyblue",t.lineWidth=e,t.strokeRect(this.options.left-e/2,this.options.top-e/2,this.options.width+e,this.options.height+e),t.restore()},e.prototype.on=function(e,i){var n=this;t.subscribe(e,function(t,e){n===e.object&&i&&i.apply(n,[t,e])})},e.prototype.trigger=function(e){t.publish(e,{object:this})},e}),i("shapes/rectangle",["shapes/shape"],function(t){function e(t){this.type="rectangle",this.initializeOptions(i,t)}var i={left:0,top:0,fill:"black",width:100,height:100,strokeStyle:"#fff",strokeWidth:null};return e.prototype=new t,e.prototype.draw=function(t){t.fillStyle=this.options.fill,t.fillRect(this.options.left,this.options.top,this.options.width,this.options.height),t.strokeStyle=this.options.strokeStyle,t.lineWidth=this.options.strokeWidth,this.options.strokeWidth&&t.strokeRect(this.options.left,this.options.top,this.options.width,this.options.height),this.isActive&&this.drawBorder(t)},e}),i("shapes/circle",["shapes/shape"],function(t){function e(t){this.type="circle",this.initializeOptions(i,t);var e=this.options.width||2*this.options.radius,n=this.options.height||2*this.options.radius;this.options.width=e,this.options.height=n}var i={left:0,top:0,fill:"black",radius:25};return e.prototype=new t,e.prototype.draw=function(t){t.beginPath(),t.arc(this.options.left+this.options.radius,this.options.top+this.options.radius,this.options.radius,0,2*Math.PI,!1),t.fillStyle=this.options.fill,t.fill(),this.options.strokeWidth&&t.strokeRect(this.options.left,this.options.top,this.options.width,this.options.height),this.isActive&&this.drawBorder(t)},e}),i("shapes/image",["shapes/shape"],function(t){function e(t,e){this.type="image",this.imageObj=t,e.width=e.width||this.imageObj.width,e.height=e.height||this.imageObj.height,this.initializeOptions(i,e)}var i={left:0,top:0,angle:0,opacity:1};return e.prototype=new t,e.prototype.draw=function(t){t.drawImage(this.imageObj,this.options.left,this.options.top,this.options.width,this.options.height),this.isActive&&this.drawBorder(t)},e}),i("shapes/text",["shapes/shape"],function(t){function e(t){this.type="text",this.initializeOptions(i,t)}var i={left:0,top:0,font:"Times New Roman",fontSize:24,fontWeight:"normal",text:"text",lineHeight:1.3,baseline:"top",fill:"black",strokeStyle:null,strokeWidth:0};return e.prototype=new t,e.prototype.getLineHeight=function(){return this.options.fontSize*this.options.lineHeight},e.prototype.draw=function(t){t.font=this.options.fontSize+"px "+this.options.font,t.fillStyle=this.options.fill,t.textBaseline=this.options.baseline;var e=t.measureText(this.options.text),i=e.width,n=this.options.height||this.getLineHeight();this.options.width=i,this.options.height=n,t.fillText(this.options.text,this.options.left,this.options.top),this.options.strokeWidth&&t.strokeRect(this.options.left,this.options.top,this.options.width,this.options.height),this.isActive&&this.drawBorder(t)},e}),i("imagine",["canvas","shapes/rectangle","shapes/circle","shapes/image","shapes/text"],function(t,e,i,n,o){var s=function(t){return t};return s.Canvas=t,s.Rectangle=e,s.Circle=i,s.Image=n,s.Text=o,s}),e("imagine")});
</script>
<div id="wrapper">
<p>The text object has event handling and logs events.<p>
<p id="loadingtime"></p>
<canvas id="canvas" width="400" height="400"></canvas>
<div id="console"></div>
</div>
var t1, t2,
consoleEl = document.getElementById('console'),
startTimer = function() {
t1 = new Date().getTime();
return t1;
},
stopTimer = function() {
t2 = new Date().getTime();
return t2 - t1;
},
randomIntFromInterval = function(min, max) {
return Math.floor(Math.random() * (max - min + 1) + min);
},
logToConsole = function(text) {
consoleEl.insertAdjacentHTML('beforeend', text + '<br>');
};
startTimer();
var c1 = new imagine.Canvas('canvas');
var rect = new imagine.Rectangle({
top: 200
});
var circle = new imagine.Circle();
var text = new imagine.Text({
top: 200,
left: 150,
font: 'Helvetica Neue',
text: 'ImagineJS is simple!'
});
var imageObj = new Image();
imageObj.src = 'http://www.w3.org/html/logo/downloads/HTML5_Logo_512.png';
imageObj.addEventListener('load', function() {
img = new imagine.Image(imageObj, {
left: 30,
top: 0,
angle: 0,
opacity: .5,
width: 128,
height: 128
});
c1.add(img);
}, false);
c1.add(circle);
c1.add(rect);
c1.add(text);
for (var i = 0; i < 15; i++) {
var rect = new imagine.Circle({
top: randomIntFromInterval(0, 400),
left: randomIntFromInterval(0, 400),
radius: randomIntFromInterval(2, 30),
fill: '#' + Math.floor(Math.random() * 16777215).toString(16)
});
c1.add(rect);
}
logToConsole('Canvas objects loaded in ' + stopTimer() + 'ms');
text.on('dragging', function(e, data) {
data.object.set({
text: 'dragging'
})
c1.reDrawObjects();
logToConsole('dragging');
});
text.on('mousedown', function(e, data) {
data.object.set({
text: 'mousedown'
});
c1.reDrawObjects();
logToConsole('mousedown');
});
text.on('mouseup', function(e, data) {
data.object.set({
text: 'mouseup'
})
c1.reDrawObjects();
logToConsole('mouseup');
});
text.on('mouseover', function(e, data) {
data.object.set({
text: 'mouseover'
})
c1.reDrawObjects();
logToConsole('mouseover');
});
text.on('mouseout', function(e, data) {
data.object.set({
text: 'mouseout'
});
c1.reDrawObjects();
logToConsole('mouseout');
});
#wrapper {
width: 820px;
}
#canvas {
border: 1px dashed #f2f2f2;
float: left;
}
#console {
width: 400px;
height: 400px;
border: 1px solid #f2f2f2;
float: right;
overflow-y: auto;
}
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