easydiffusion/ui/media/js/drawingboard.min.js

/* drawingboard.js v0.4.6 - https://github.com/Leimi/drawingboard.js
* Copyright (c) 2015 Emmanuel Pelletier
* Licensed MIT */
!function(){"use strict";function a(a,b){for(;a.length>b;)a.shift()}var b=function(a){var b=a?a:{},c={provider:function(){throw new Error("No provider!")},maxLength:30,onUpdate:function(){}};this.provider="undefined"!=typeof b.provider?b.provider:c.provider,this.maxLength="undefined"!=typeof b.maxLength?b.maxLength:c.maxLength,this.onUpdate="undefined"!=typeof b.onUpdate?b.onUpdate:c.onUpdate,this.initialItem=null,this.clear()};b.prototype.initialize=function(a){this.stack[0]=a,this.initialItem=a},b.prototype.clear=function(){this.stack=[this.initialItem],this.position=0,this.onUpdate()},b.prototype.save=function(){this.provider(function(b){a(this.stack,this.maxLength),this.position=Math.min(this.position,this.stack.length-1),this.stack=this.stack.slice(0,this.position+1),this.stack.push(b),this.position++,this.onUpdate()}.bind(this))},b.prototype.undo=function(a){if(this.canUndo()){var b=this.stack[--this.position];this.onUpdate(),a&&a(b)}},b.prototype.redo=function(a){if(this.canRedo()){var b=this.stack[++this.position];this.onUpdate(),a&&a(b)}},b.prototype.canUndo=function(){return this.position>0},b.prototype.canRedo=function(){return this.position<this.count()},b.prototype.count=function(){return this.stack.length-1},"undefined"!=typeof module&&(module.exports=b),"undefined"!=typeof window&&(window.SimpleUndo=b)}(),window.DrawingBoard="undefined"!=typeof DrawingBoard?DrawingBoard:{},DrawingBoard.Utils={},DrawingBoard.Utils.tpl=function(){"use strict";var a,b="{{",c="}}",d="[a-z0-9_][\\.a-z0-9_]*",e=new RegExp(b+"\\s*("+d+")\\s*"+c,"gi");return function(b,c){return b.replace(e,function(b,d){for(var e=d.split("."),f=e.length,g=c,h=0;f>h;h++){if(g=g[e[h]],g===a)throw"tim: '"+e[h]+"' not found in "+b;if(h===f-1)return g}})}}(),DrawingBoard.Utils.MicroEvent=function(){},DrawingBoard.Utils.MicroEvent.prototype={bind:function(a,b){this._events=this._events||{},this._events[a]=this._events[a]||[],this._events[a].push(b)},unbind:function(a,b){this._events=this._events||{},a in this._events!=!1&&this._events[a].splice(this._events[a].indexOf(b),1)},trigger:function(a){if(this._events=this._events||{},a in this._events!=!1)for(var b=0;b<this._events[a].length;b++)this._events[a][b].apply(this,Array.prototype.slice.call(arguments,1))}},DrawingBoard.Utils._boxBorderSize=function(a,b,c,d){b=!!b||!0,c=!!c||!1;var e,f=0;"width"==d?(e=["border-left-width","border-right-width"],b&&e.push("padding-left","padding-right"),c&&e.push("margin-left","margin-right")):(e=["border-top-width","border-bottom-width"],b&&e.push("padding-top","padding-bottom"),c&&e.push("margin-top","margin-bottom"));for(var g=e.length-1;g>=0;g--)f+=parseInt(a.css(e[g]).replace("px",""),10);return f},DrawingBoard.Utils.boxBorderWidth=function(a,b,c){return DrawingBoard.Utils._boxBorderSize(a,b,c,"width")},DrawingBoard.Utils.boxBorderHeight=function(a,b,c){return DrawingBoard.Utils._boxBorderSize(a,b,c,"height")},DrawingBoard.Utils.isColor=function(a){return a&&a.length?/(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(a)||-1!==$.inArray(a.substring(0,3),["rgb","hsl"]):!1},DrawingBoard.Utils.RGBToInt=function(a,b,c){var d=0;return d|=(255&a)<<16,d|=(255&b)<<8,d|=255&c},DrawingBoard.Utils.pixelAt=function(a,b,c){var d=4*(c*a.width+b),e=DrawingBoard.Utils.RGBToInt(a.data[d],a.data[d+1],a.data[d+2]);return[d,b,c,e]},DrawingBoard.Utils.compareColors=function(a,b,c){if(0===c)return a===b;var d=a>>16&255,e=b>>16&255,f=a>>8&255,g=b>>8&255,h=255&a,i=255&b;return Math.abs(d-e)<=c&&Math.abs(f-g)<=c&&Math.abs(h-i)<=c},function(){for(var a=["ms","moz","webkit","o"],b=0;b<a.length&&!window.requestAnimationFrame;++b)window.requestAnimationFrame=window[a[b]+"RequestAnimationFrame"],window.cancelAnimationFrame=window[a[b]+"CancelAnimationFrame"]||window[a[b]+"CancelRequestAnimationFrame"]}(),window.DrawingBoard="undefined"!=typeof DrawingBoard?DrawingBoard:{},DrawingBoard.Board=function(a,b){if(this.opts=this.mergeOptions(b),this.ev=new DrawingBoard.Utils.MicroEvent,this.id=a,this.$el=$(document.getElementById(a)),!this.$el.length)return!1;var c='<div class="drawing-board-canvas-wrapper"></canvas><canvas class="drawing-board-canvas"></canvas><div class="drawing-board-cursor drawing-board-utils-hidden"></div></div>';return this.opts.controlsPosition.indexOf("bottom")>-1?c+='<div class="drawing-board-controls"></div>':c='<div class="drawing-board-controls"></div>'+c,this.$el.addClass("drawing-board").append(c),this.dom={$canvasWrapper:this.$el.find(".drawing-board-canvas-wrapper"),$canvas:this.$el.find(".drawing-board-canvas"),$cursor:this.$el.find(".drawing-board-cursor"),$controls:this.$el.find(".drawing-board-controls")},$.each(["left","right","center"],$.proxy(function(a,b){return this.opts.controlsPosition.indexOf(b)>-1?(this.dom.$controls.attr("data-align",b),!1):void 0},this)),this.canvas=this.dom.$canvas.get(0),this.ctx=this.canvas&&this.canvas.getContext&&this.canvas.getContext("2d")?this.canvas.getContext("2d"):null,this.color=this.opts.color,this.ctx?(this.storage=this._getStorage(),this.initHistory(),this.reset({webStorage:!1,history:!1,background:!1}),this.initControls(),this.resize(),this.reset({webStorage:!1,history:!1,background:!0}),this.restoreWebStorage(),this.initDropEvents(),void this.initDrawEvents()):(this.opts.errorMessage&&this.$el.html(this.opts.errorMessage),!1)},DrawingBoard.Board.defaultOpts={controls:["Color","DrawingMode","Size","Navigation"],controlsPosition:"top left",color:"#000000",size:1,background:"#fff",eraserColor:"background",fillTolerance:100,fillHack:!0,webStorage:"session",droppable:!1,enlargeYourContainer:!1,errorMessage:'<p>It seems you use an obsolete browser. <a href="http://browsehappy.com/" target="_blank">Update it</a> to start drawing.</p>',stretchImg:!1},DrawingBoard.Board.prototype={mergeOptions:function(a){return a=$.extend({},DrawingBoard.Board.defaultOpts,a),a.background||"background"!==a.eraserColor||(a.eraserColor="transparent"),a},reset:function(a){a=$.extend({color:this.opts.color,size:this.opts.size,webStorage:!0,history:!0,background:!1},a),this.setMode("pencil"),a.background&&this.resetBackground(this.opts.background,$.proxy(function(){a.history&&this.saveHistory()},this)),a.color&&this.setColor(a.color),a.size&&(this.ctx.lineWidth=a.size),this.ctx.lineCap="round",this.ctx.lineJoin="round",a.webStorage&&this.saveWebStorage(),a.history&&!a.background&&this.saveHistory(),this.blankCanvas=this.getImg(),this.ev.trigger("board:reset",a)},resetBackground:function(a,b){a=a||this.opts.background;var c=DrawingBoard.Utils.isColor(a),d=this.getMode();this.setMode("pencil"),this.ctx.clearRect(0,0,this.ctx.canvas.width,this.ctx.canvas.height),c?(this.ctx.fillStyle=a,this.ctx.fillRect(0,0,this.ctx.canvas.width,this.ctx.canvas.height),this.history.initialize(this.getImg()),b&&b()):a&&this.setImg(a,{callback:$.proxy(function(){this.history.initialize(this.getImg()),b&&b()},this)}),this.setMode(d)},resize:function(){this.dom.$controls.toggleClass("drawing-board-controls-hidden",!this.controls||!this.controls.length);var a,b,c=[this.$el.width(),DrawingBoard.Utils.boxBorderWidth(this.$el),DrawingBoard.Utils.boxBorderWidth(this.dom.$canvasWrapper,!0,!0)],d=[this.$el.height(),DrawingBoard.Utils.boxBorderHeight(this.$el),this.dom.$controls.height(),DrawingBoard.Utils.boxBorderHeight(this.dom.$controls,!1,!0),DrawingBoard.Utils.boxBorderHeight(this.dom.$canvasWrapper,!0,!0)],e=function(a,b){b=b||1;for(var c=a[0],d=1;d<a.length;d++)c+=a[d]*b;return c},f=function(a){return e(a,-1)};this.opts.enlargeYourContainer?(a=this.$el.width(),b=this.$el.height(),this.$el.width(e(c)),this.$el.height(e(d))):(a=f(c),b=f(d)),this.dom.$canvasWrapper.css("width",a+"px"),this.dom.$canvasWrapper.css("height",b+"px"),this.dom.$canvas.css("width",a+"px"),this.dom.$canvas.css("height",b+"px"),this.canvas.width=a,this.canvas.height=b},initControls:function(){if(this.controls=[],!this.opts.controls.length||!DrawingBoard.Control)return!1;for(var a=0;a<this.opts.controls.length;a++){var b=null;if("string"==typeof this.opts.controls[a])b=new window.DrawingBoard.Control[this.opts.controls[a]](this);else if("object"==typeof this.opts.controls[a]){for(var c in this.opts.controls[a])break;b=new window.DrawingBoard.Control[c](this,this.opts.controls[a][c])}b&&this.addControl(b)}},addControl:function(a,b,c){if("string"!=typeof a&&("object"!=typeof a||!a instanceof DrawingBoard.Control))return!1;var d="object"==typeof b?b:{};c=c?1*c:"number"==typeof b?b:null,"string"==typeof a&&(a=new window.DrawingBoard.Control[a](this,d)),c?this.dom.$controls.children().eq(c).before(a.$el):this.dom.$controls.append(a.$el),this.controls||(this.controls=[]),this.controls.push(a),this.dom.$controls.removeClass("drawing-board-controls-hidden")},initHistory:function(){this.history=new SimpleUndo({maxLength:30,provider:$.proxy(function(a){a(this.getImg())},this),onUpdate:$.proxy(function(){this.ev.trigger("historyNavigation")},this)})},saveHistory:function(){this.history.save()},restoreHistory:function(a){this.setImg(a,{callback:$.proxy(function(){this.saveWebStorage()},this)})},goBackInHistory:function(){this.history.undo($.proxy(this.restoreHistory,this))},goForthInHistory:function(){this.history.redo($.proxy(this.restoreHistory,this))},setImg:function(a,b){b=$.extend({stretch:this.opts.stretchImg,callback:null},b);var c=this.ctx,d=new Image,e=c.globalCompositeOperation;d.onload=function(){c.globalCompositeOperation="source-over",c.clearRect(0,0,c.canvas.width,c.canvas.height),b.stretch?c.drawImage(d,0,0,c.canvas.width,c.canvas.height):c.drawImage(d,0,0),c.globalCompositeOperation=e,b.callback&&b.callback()},d.src=a},getImg:function(){return this.canvas.toDataURL("image/png")},downloadImg:function(){var a=this.getImg();a=a.replace("image/png","image/octet-stream"),window.location.href=a},saveWebStorage:function(){window[this.storage]&&(window[this.storage].setItem("drawing-board-"+this.id,this.getImg()),this.ev.trigger("board:save"+this.storage.charAt(0).toUpperCase()+this.storage.slice(1),this.getImg()))},restoreWebStorage:function(){window[this.storage]&&null!==window[this.storage].getItem("drawing-board-"+this.id)&&(this.setImg(window[this.storage].getItem("drawing-board-"+this.id)),this.ev.trigger("board:restore"+this.storage.charAt(0).toUpperCase()+this.storage.slice(1),window[this.storage].getItem("drawing-board-"+this.id)))},clearWebStorage:function(){window[this.storage]&&null!==window[this.storage].getItem("drawing-board-"+this.id)&&(window[this.storage].removeItem("drawing-board-"+this.id),this.ev.trigger("board:clear"+this.storage.charAt(0).toUpperCase()+this.storage.slice(1)))},_getStorage:function(){return!this.opts.webStorage||"session"!==this.opts.webStorage&&"local"!==this.opts.webStorage?!1:this.opts.webStorage+"Storage"},initDropEvents:function(){return this.opts.droppable?(this.dom.$canvas.on("dragover dragenter drop",function(a){a.stopPropagation(),a.preventDefault()}),void this.dom.$canvas.on("drop",$.proxy(this._onCanvasDrop,this))):!1},_onCanvasDrop:function(a){a=a.originalEvent?a.originalEvent:a;var b=a.dataTransfer.files;if(!b||!b.length||-1==b[0].type.indexOf("image")||!window.FileReader)return!1;var c=new FileReader;c.readAsDataURL(b[0]),c.onload=$.proxy(function(a){this.setImg(a.target.result,{callback:$.proxy(function(){this.saveHistory()},this)}),this.ev.trigger("board:imageDropped",a.target.result),this.ev.trigger("board:userAction")},this)},setMode:function(a,b){b=b||!1,a=a||"pencil",this.ev.unbind("board:startDrawing",$.proxy(this.fill,this)),"transparent"===this.opts.eraserColor?this.ctx.globalCompositeOperation="eraser"===a?"destination-out":"source-over":("eraser"===a?"background"===this.opts.eraserColor&&DrawingBoard.Utils.isColor(this.opts.background)?this.ctx.strokeStyle=this.opts.background:DrawingBoard.Utils.isColor(this.opts.eraserColor)&&(this.ctx.strokeStyle=this.opts.eraserColor):this.mode&&"eraser"!==this.mode||(this.ctx.strokeStyle=this.color),"filler"===a&&this.ev.bind("board:startDrawing",$.proxy(this.fill,this))),this.mode=a,b||this.ev.trigger("board:mode",this.mode)},getMode:function(){return this.mode||"pencil"},setColor:function(a){var b=this;if(a=a||this.color,!DrawingBoard.Utils.isColor(a))return!1;if(this.color=a,"transparent"!==this.opts.eraserColor&&"eraser"===this.mode){var c=function(a){"eraser"!==a&&(b.strokeStyle=b.color),b.ev.unbind("board:mode",c)};this.ev.bind("board:mode",c)}else this.ctx.strokeStyle=this.color},fill:function(a){function b(a){c.data[a[d]]=i,c.data[a[d]+1]=j,c.data[a[d]+2]=k}if(this.getImg()===this.blankCanvas)return this.ctx.clearRect(0,0,this.ctx.canvas.width,this.ctx.canvas.height),this.ctx.fillStyle=this.color,void this.ctx.fillRect(0,0,this.ctx.canvas.width,this.ctx.canvas.height);var c=this.ctx.getImageData(0,0,this.canvas.width,this.canvas.height),d=0,e=1,f=2,g=3,h=this.ctx.strokeStyle,i=parseInt(h.substr(1,2),16),j=parseInt(h.substr(3,2),16),k=parseInt(h.substr(5,2),16),l=DrawingBoard.Utils.pixelAt(c,parseInt(a.coords.x,10),parseInt(a.coords.y,10)),m=l[g],n=this.opts.fillTolerance,o=this.opts.fillHack;if(!DrawingBoard.Utils.compareColors(m,DrawingBoard.Utils.RGBToInt(i,j,k),n)){for(var p,q=[l],r=c.width-1,s=c.height-1;p=q.pop();)o&&b(p),DrawingBoard.Utils.compareColors(p[g],m,n)&&(o||b(p),p[e]>0&&q.push(DrawingBoard.Utils.pixelAt(c,p[e]-1,p[f])),p[e]<r&&q.push(DrawingBoard.Utils.pixelAt(c,p[e]+1,p[f])),p[f]>0&&q.push(DrawingBoard.Utils.pixelAt(c,p[e],p[f]-1)),p[f]<s&&q.push(DrawingBoard.Utils.pixelAt(c,p[e],p[f]+1)));this.ctx.putImageData(c,0,0)}},initDrawEvents:function(){this.isDrawing=!1,this.isMouseHovering=!1,this.coords={},this.coords.old=this.coords.current=this.coords.oldMid={x:0,y:0},this.dom.$canvas.on("mousedown touchstart",$.proxy(function(a){this._onInputStart(a,this._getInputCoords(a))},this)),this.dom.$canvas.on("mousemove touchmove",$.proxy(function(a){this._onInputMove(a,this._getInputCoords(a))},this)),this.dom.$canvas.on("mousemove",$.proxy(function(){},this)),this.dom.$canvas.on("mouseup touchend",$.proxy(function(a){this._onInputStop(a,this._getInputCoords(a))},this)),this.dom.$canvas.on("mouseover",$.proxy(function(a){this._onMouseOver(a,this._getInputCoords(a))},this)),this.dom.$canvas.on("mouseout",$.proxy(function(a){this._onMouseOut(a,this._getInputCoords(a))},this)),$("body").on("mouseup touchend",$.proxy(function(){this.isDrawing=!1},this)),window.requestAnimationFrame&&requestAnimationFrame($.proxy(this.draw,this))},draw:function(){if(window.requestAnimationFrame&&this.ctx.lineWidth>10&&this.isMouseHovering){this.dom.$cursor.css({width:this.ctx.lineWidth+"px",height:this.ctx.lineWidth+"px"});var a=DrawingBoard.Utils.tpl("translateX({{x}}px) translateY({{y}}px)",{x:this.coords.current.x-this.ctx.lineWidth/2,y:this.coords.current.y-this.ctx.lineWidth/2});this.dom.$cursor.css({transform:a,"-webkit-transform":a,"-ms-transform":a}),this.dom.$cursor.removeClass("drawing-board-utils-hidden")}else this.dom.$cursor.addClass("drawing-board-utils-hidden");if(this.isDrawing){var b=this._getMidInputCoords(this.coords.current);this.ctx.beginPath(),this.ctx.moveTo(b.x,b.y),this.ctx.quadraticCurveTo(this.coords.old.x,this.coords.old.y,this.coords.oldMid.x,this.coords.oldMid.y),this.ctx.stroke(),this.coords.old=this.coords.current,this.coords.oldMid=b}window.requestAnimationFrame&&requestAnimationFrame($.proxy(function(){this.draw()},this))},_onInputStart:function(a,b){this.coords.current=this.coords.old=b,this.coords.oldMid=this._getMidInputCoords(b),this.isDrawing=!0,window.requestAnimationFrame||this.draw(),this.ev.trigger("board:startDrawing",{e:a,coords:b}),a.stopPropagation(),a.preventDefault()},_onInputMove:function(a,b){this.coords.current=b,this.ev.trigger("board:drawing",{e:a,coords:b}),window.requestAnimationFrame||this.draw(),a.stopPropagation(),a.preventDefault()},_onInputStop:function(a,b){!this.isDrawing||a.touches&&0!==a.touches.length||(this.isDrawing=!1,this.saveWebStorage(),this.saveHistory(),this.ev.trigger("board:stopDrawing",{e:a,coords:b}),this.ev.trigger("board:userAction"),a.stopPropagation(),a.preventDefault())},_onMouseOver:function(a,b){this.isMouseHovering=!0,this.coords.old=this._getInputCoords(a),this.coords.oldMid=this._getMidInputCoords(this.coords.old),this.ev.trigger("board:mouseOver",{e:a,coords:b})},_onMouseOut:function(a,b){this.isMouseHovering=!1,this.ev.trigger("board:mouseOut",{e:a,coords:b})},_getInputCoords:function(a){a=a.originalEvent?a.originalEvent:a;var b,c,d=this.canvas.getBoundingClientRect(),e=this.dom.$canvas.width(),f=this.dom.$canvas.height();return a.touches&&1==a.touches.length?(b=a.touches[0].pageX,c=a.touches[0].pageY):(b=a.pageX,c=a.pageY),b-=this.dom.$canvas.offset().left,c-=this.dom.$canvas.offset().top,b*=e/d.width,c*=f/d.height,{x:b,y:c}},_getMidInputCoords:function(a){return{x:this.coords.old.x+a.x>>1,y:this.coords.old.y+a.y>>1}}},DrawingBoard.Control=function(a,b){return this.board=a,this.opts=$.extend({},this.defaults,b),this.$el=$(document.createElement("div")).addClass("drawing-board-control"),this.name&&this.$el.addClass("drawing-board-control-"+this.name),this.board.ev.bind("board:reset",$.proxy(this.onBoardReset,this)),this.initialize.apply(this,arguments),this},DrawingBoard.Control.prototype={name:"",defaults:{},initialize:function(){},addToBoard:function(){this.board.addControl(this)},onBoardReset:function(){}},DrawingBoard.Control.extend=function(a,b){var c,d=this;c=a&&a.hasOwnProperty("constructor")?a.constructor:function(){return d.apply(this,arguments)},$.extend(c,d,b);var e=function(){this.constructor=c};return e.prototype=d.prototype,c.prototype=new e,a&&$.extend(c.prototype,a),c.__super__=d.prototype,c},DrawingBoard.Control.Color=DrawingBoard.Control.extend({name:"colors",initialize:function(){this.initTemplate();var a=this;this.$el.on("click",".drawing-board-control-colors-picker",function(b){var c=$(this).attr("data-color");a.board.setColor(c),a.$el.find(".drawing-board-control-colors-current").css("background-color",c).attr("data-color",c),a.board.ev.trigger("color:changed",c),a.$el.find(".drawing-board-control-colors-rainbows").addClass("drawing-board-utils-hidden"),b.preventDefault()}),this.$el.on("click",".drawing-board-control-colors-current",function(b){a.$el.find(".drawing-board-control-colors-rainbows").toggleClass("drawing-board-utils-hidden"),b.preventDefault()}),$("body").on("click",function(b){var c=$(b.target),d=c.hasClass("drawing-board-control-colors-current")?c:c.closest(".drawing-board-control-colors-current"),e=a.$el.find(".drawing-board-control-colors-current"),f=a.$el.find(".drawing-board-control-colors-rainbows");d.length&&d.get(0)===e.get(0)||f.hasClass("drawing-board-utils-hidden")||f.addClass("drawing-board-utils-hidden")})},initTemplate:function(){var a='<div class="drawing-board-control-inner"><div class="drawing-board-control-colors-current" style="background-color: {{color}}" data-color="{{color}}"></div><div class="drawing-board-control-colors-rainbows">{{rainbows}}</div></div>',b='<div class="drawing-board-control-colors-picker" data-color="{{color}}" style="background-color: {{color}}"></div>',c="";$.each([.75,.5,.25],$.proxy(function(a,d){var e=0,f=null;for(c+='<div class="drawing-board-control-colors-rainbow">',.25==d&&(f=this._rgba(0,0,0,1)),.5==d&&(f=this._rgba(150,150,150,1)),.75==d&&(f=this._rgba(255,255,255,1)),c+=DrawingBoard.Utils.tpl(b,{color:f.toString()});330>=e;)c+=DrawingBoard.Utils.tpl(b,{color:this._hsl2Rgba(this._hsl(e-60,1,d)).toString()}),e+=30;c+="</div>"},this)),this.$el.append($(DrawingBoard.Utils.tpl(a,{color:this.board.color,rainbows:c}))),this.$el.find(".drawing-board-control-colors-rainbows").addClass("drawing-board-utils-hidden")},onBoardReset:function(){this.board.setColor(this.$el.find(".drawing-board-control-colors-current").attr("data-color"))},_rgba:function(a,b,c,d){return{r:a,g:b,b:c,a:d,toString:function(){return"rgba("+a+", "+b+", "+c+", "+d+")"}}},_hsl:function(a,b,c){return{h:a,s:b,l:c,toString:function(){return"hsl("+a+", "+100*b+"%, "+100*c+"%)"}}},_hex2Rgba:function(a){var b=parseInt(a.substring(1),16);return this._rgba(b>>16,b>>8&255,255&b,1)},_hsl2Rgba:function(a){function b(a,b,c){return 0>c&&(c+=1),c>1&&(c-=1),1/6>c?a+6*(b-a)*c:.5>c?b:2/3>c?a+(b-a)*(2/3-c)*6:a}var c,d,e,f=a.h/360,g=a.s,h=a.l;if(0===g)c=d=e=h;else{var i=.5>h?h*(1+g):h+g-h*g,j=2*h-i;c=Math.floor(255*b(j,i,f+1/3)),d=Math.floor(255*b(j,i,f)),e=Math.floor(255*b(j,i,f-1/3))}return this._rgba(c,d,e,1)}}),DrawingBoard.Control.DrawingMode=DrawingBoard.Control.extend({name:"drawingmode",defaults:{pencil:!0,eraser:!0,filler:!0},initialize:function(){this.prevMode=this.board.getMode(),$.each(["pencil","eraser","filler"],$.proxy(function(a,b){this.opts[b]&&this.$el.append('<button class="drawing-board-control-drawingmode-'+b+'-button" data-mode="'+b+'"></button>')},this)),this.$el.on("click","button[data-mode]",$.proxy(function(a){var b=$(a.currentTarget).attr("data-mode"),c=this.board.getMode();c!==b&&(this.prevMode=c);var d=c===b?this.prevMode:b;this.board.setMode(d),a.preventDefault()},this)),this.board.ev.bind("board:mode",$.proxy(function(a){this.toggleButtons(a)},this)),this.toggleButtons(this.board.getMode())},toggleButtons:function(a){this.$el.find("button[data-mode]").each(function(b,c){var d=$(c);d.toggleClass("active",a===d.attr("data-mode"))})}}),DrawingBoard.Control.Navigation=DrawingBoard.Control.extend({name:"navigation",defaults:{back:!0,forward:!0,reset:!0},initialize:function(){var a="";if(this.opts.back&&(a+='<button class="drawing-board-control-navigation-back">&larr;</button>'),this.opts.forward&&(a+='<button class="drawing-board-control-navigation-forward">&rarr;</button>'),this.opts.reset&&(a+='<button class="drawing-board-control-navigation-reset">&times;</button>'),this.$el.append(a),this.opts.back){var b=this.$el.find(".drawing-board-control-navigation-back");this.board.ev.bind("historyNavigation",$.proxy(this.updateBack,this,b)),this.$el.on("click",".drawing-board-control-navigation-back",$.proxy(function(a){this.board.goBackInHistory(),a.preventDefault()},this)),this.updateBack(b)}if(this.opts.forward){var c=this.$el.find(".drawing-board-control-navigation-forward");this.board.ev.bind("historyNavigation",$.proxy(this.updateForward,this,c)),this.$el.on("click",".drawing-board-control-navigation-forward",$.proxy(function(a){this.board.goForthInHistory(),a.preventDefault()},this)),this.updateForward(c)}this.opts.reset&&this.$el.on("click",".drawing-board-control-navigation-reset",$.proxy(function(a){this.board.reset({background:!0}),a.preventDefault()},this))},updateBack:function(a){this.board.history.canUndo()?a.removeAttr("disabled"):a.attr("disabled","disabled")},updateForward:function(a){this.board.history.canRedo()?a.removeAttr("disabled"):a.attr("disabled","disabled")}}),DrawingBoard.Control.Size=DrawingBoard.Control.extend({name:"size",defaults:{type:"auto",dropdownValues:[1,3,6,10,20,30,40,50],min:1,max:50},types:["dropdown","range"],initialize:function(){"auto"==this.opts.type&&(this.opts.type=this._iHasRangeInput()?"range":"dropdown");var a=$.inArray(this.opts.type,this.types)>-1?this["_"+this.opts.type+"Template"]():!1;if(!a)return!1;this.val=this.board.opts.size,this.$el.append($(a)),this.$el.attr("data-drawing-board-type",this.opts.type),this.updateView();var b=this;"range"==this.opts.type&&this.$el.on("change",".drawing-board-control-size-range-input",function(a){b.val=$(this).val(),b.updateView(),b.board.ev.trigger("size:changed",b.val),a.preventDefault()}),"dropdown"==this.opts.type&&(this.$el.on("click",".drawing-board-control-size-dropdown-current",$.proxy(function(){this.$el.find(".drawing-board-control-size-dropdown").toggleClass("drawing-board-utils-hidden")},this)),this.$el.on("click","[data-size]",function(a){b.val=parseInt($(this).attr("data-size"),0),b.updateView(),b.board.ev.trigger("size:changed",b.val),a.preventDefault()}))},_rangeTemplate:function(){var a='<div class="drawing-board-control-inner" title="{{size}}"><input type="range" min="{{min}}" max="{{max}}" value="{{size}}" step="1" class="drawing-board-control-size-range-input"><span class="drawing-board-control-size-range-current"></span></div>';return DrawingBoard.Utils.tpl(a,{min:this.opts.min,max:this.opts.max,size:this.board.opts.size})},_dropdownTemplate:function(){var a='<div class="drawing-board-control-inner" title="{{size}}"><div class="drawing-board-control-size-dropdown-current"><span></span></div><ul class="drawing-board-control-size-dropdown">';return $.each(this.opts.dropdownValues,function(b,c){a+=DrawingBoard.Utils.tpl('<li data-size="{{size}}"><span style="width: {{size}}px; height: {{size}}px; border-radius: {{size}}px;"></span></li>',{size:c})}),a+="</ul></div>"},onBoardReset:function(){this.updateView()},updateView:function(){var a=this.val;if(this.board.ctx.lineWidth=a,this.$el.find(".drawing-board-control-size-range-current, .drawing-board-control-size-dropdown-current span").css({width:a+"px",height:a+"px",borderRadius:a+"px",marginLeft:-1*a/2+"px",marginTop:-1*a/2+"px"}),this.$el.find(".drawing-board-control-inner").attr("title",a),"dropdown"==this.opts.type){var b=null;$.each(this.opts.dropdownValues,function(c,d){(null===b||Math.abs(d-a)<Math.abs(b-a))&&(b=d)}),this.$el.find(".drawing-board-control-size-dropdown").addClass("drawing-board-utils-hidden")}},_iHasRangeInput:function(){var a,b=document.createElement("input"),c=":)",d=document.documentElement,e="range";return b.setAttribute("type",e),a="text"!==b.type,b.value=c,b.style.cssText="position:absolute;visibility:hidden;",/^range$/.test(e)&&void 0!==b.style.WebkitAppearance&&(d.appendChild(b),defaultView=document.defaultView,a=defaultView.getComputedStyle&&"textfield"!==defaultView.getComputedStyle(b,null).WebkitAppearance&&0!==b.offsetHeight,d.removeChild(b)),!!a}}),DrawingBoard.Control.Download=DrawingBoard.Control.extend({name:"download",initialize:function(){this.$el.append('<button class="drawing-board-control-download-button"></button>'),this.$el.on("click",".drawing-board-control-download-button",$.proxy(function(a){this.board.downloadImg(),a.preventDefault()},this))}});