scratchblocks.js

/**
 * scratchblocks v3.6.1
 * https://scratchblocks.github.io/
 * Render scratchblocks code to SVG images.
 *
 * Copyright 2013–2022, Tim Radvan
 * @license MIT
 */

var scratchblocks=function(){"use strict";function e(e,t){var i=Object.keys(e);if(Object.getOwnPropertySymbols){var s=Object.getOwnPropertySymbols(e);t&&(s=s.filter((function(t){return Object.getOwnPropertyDescriptor(e,t).enumerable}))),i.push.apply(i,s)}return i}function t(t){for(var i=1;i<arguments.length;i++){var s=null!=arguments[i]?arguments[i]:{};i%2?e(Object(s),!0).forEach((function(e){r(t,e,s[e])})):Object.getOwnPropertyDescriptors?Object.defineProperties(t,Object.getOwnPropertyDescriptors(s)):e(Object(s)).forEach((function(e){Object.defineProperty(t,e,Object.getOwnPropertyDescriptor(s,e))}))}return t}function i(e,t){for(var i=0;i<t.length;i++){var s=t[i];s.enumerable=s.enumerable||!1,s.configurable=!0,"value"in s&&(s.writable=!0),Object.defineProperty(e,s.key,s)}}function s(e,t,s){return t&&i(e.prototype,t),s&&i(e,s),Object.defineProperty(e,"prototype",{writable:!1}),e}function r(e,t,i){return t in e?Object.defineProperty(e,t,{value:i,enumerable:!0,configurable:!0,writable:!0}):e[t]=i,e}function n(){return n=Object.assign||function(e){for(var t=1;t<arguments.length;t++){var i=arguments[t];for(var s in i)Object.prototype.hasOwnProperty.call(i,s)&&(e[s]=i[s])}return e},n.apply(this,arguments)}function o(e){return function(e){if(Array.isArray(e))return c(e)}(e)||function(e){if("undefined"!=typeof Symbol&&null!=e[Symbol.iterator]||null!=e["@@iterator"])return Array.from(e)}(e)||a(e)||function(){throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}()}function a(e,t){if(e){if("string"==typeof e)return c(e,t);var i=Object.prototype.toString.call(e).slice(8,-1);return"Object"===i&&e.constructor&&(i=e.constructor.name),"Map"===i||"Set"===i?Array.from(e):"Arguments"===i||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(i)?c(e,t):void 0}}function c(e,t){(null==t||t>e.length)&&(t=e.length);for(var i=0,s=Array(t);i<t;i++)s[i]=e[i];return s}function l(e,t){var i="undefined"!=typeof Symbol&&e[Symbol.iterator]||e["@@iterator"];if(!i){if(Array.isArray(e)||(i=a(e))||t&&e&&"number"==typeof e.length){i&&(e=i);var s=0,r=function(){};return{s:r,n:function(){return s>=e.length?{done:!0}:{done:!1,value:e[s++]}},e:function(e){throw e},f:r}}throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}var n,o=!0,c=!1;return{s:function(){i=i.call(e)},n:function(){var e=i.next();return o=e.done,e},e:function(e){c=!0,n=e},f:function(){try{o||null==i.return||i.return()}finally{if(c)throw n}}}}var h={pen:"pen",video:"sensing",music:"sound"},u=t(t({},h),{},{tts:"tts",translate:"translate",microbit:"microbit",wedo:"wedo",makeymakey:"makeymakey",ev3:"ev3",boost:"boost",gdxfor:"gdxfor"}),p={wedo2:"wedo",text2speech:"tts"},f=["motion","looks","sound","variables","list","events","control","sensing","operators","custom","custom-arg","extension","grey","obsolete"].concat(o(Object.keys(u)),o(Object.keys(p))),d=["hat","cap","stack","boolean","reporter","ring","cat"],g=["ar","ckb","fa","he"],y=/%([0-9]+)/,v=/(%[a-zA-Z0-9](?:\.[a-zA-Z0-9]+)?)/,m=RegExp(v.source,"g"),k=/(@[a-zA-Z]+)/,b=RegExp(v.source+"|"+k.source+"| +","g"),w=/^#(?:[0-9a-fA-F]{3}){1,2}?$/;function A(e){var t=y.exec(e);return t?+t[1]:0}function O(e){var t=e.split(b).filter((function(e){return e})),i=t.filter((function(e){return v.test(e)}));return{spec:e,parts:t,inputs:i,hash:S(e)}}function S(e){return L(e.replace(m," _ "))}function L(e){return e.replace(/_/g," _ ").replace(/ +/g," ").replace(/[,%?:]/g,"").replace(/ß/g,"ss").replace(/ä/g,"a").replace(/ö/g,"o").replace(/ü/g,"u").replace(". . .","...").replace(/^…$/,"...").trim().toLowerCase()}var E={},T=[{id:"MOTION_MOVESTEPS",selector:"forward:",spec:"move %1 steps",inputs:["%n"],shape:"stack",category:"motion"},{id:"MOTION_TURNRIGHT",selector:"turnRight:",spec:"turn @turnRight %1 degrees",inputs:["%n"],shape:"stack",category:"motion"},{id:"MOTION_TURNLEFT",selector:"turnLeft:",spec:"turn @turnLeft %1 degrees",inputs:["%n"],shape:"stack",category:"motion"},{id:"MOTION_POINTINDIRECTION",selector:"heading:",spec:"point in direction %1",inputs:["%d.direction"],shape:"stack",category:"motion"},{id:"MOTION_POINTTOWARDS",selector:"pointTowards:",spec:"point towards %1",inputs:["%m.spriteOrMouse"],shape:"stack",category:"motion"},{id:"MOTION_GOTOXY",selector:"gotoX:y:",spec:"go to x:%1 y:%2",inputs:["%n","%n"],shape:"stack",category:"motion"},{id:"MOTION_GOTO",selector:"gotoSpriteOrMouse:",spec:"go to %1",inputs:["%m.location"],shape:"stack",category:"motion"},{id:"MOTION_GLIDESECSTOXY",selector:"glideSecs:toX:y:elapsed:from:",spec:"glide %1 secs to x:%2 y:%3",inputs:["%n","%n","%n"],shape:"stack",category:"motion"},{id:"MOTION_GLIDETO",spec:"glide %1 secs to %2",inputs:["%n","%m.location"],shape:"stack",category:"motion"},{id:"MOTION_CHANGEXBY",selector:"changeXposBy:",spec:"change x by %1",inputs:["%n"],shape:"stack",category:"motion"},{id:"MOTION_SETX",selector:"xpos:",spec:"set x to %1",inputs:["%n"],shape:"stack",category:"motion"},{id:"MOTION_CHANGEYBY",selector:"changeYposBy:",spec:"change y by %1",inputs:["%n"],shape:"stack",category:"motion"},{id:"MOTION_SETY",selector:"ypos:",spec:"set y to %1",inputs:["%n"],shape:"stack",category:"motion"},{id:"MOTION_SETROTATIONSTYLE",selector:"setRotationStyle",spec:"set rotation style %1",inputs:["%m.rotationStyle"],shape:"stack",category:"motion"},{id:"LOOKS_SAYFORSECS",selector:"say:duration:elapsed:from:",spec:"say %1 for %2 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sb3-"+this.info.category+"-alt"});if(this.isRing){var r=this.children[0];if(r&&(r.isInput||r.isBlock||r.isScript))return Oe.roundRect(t,i,{class:"sb3-"+this.info.category})}var n=e.shapes[this.info.shape];if(!n)throw Error("no shape func: "+this.info.shape);return n(t,i,{class:"sb3-"+this.info.category})}},{key:"horizontalPadding",value:function(e){if(this.isRound){if(e.isIcon)return 16;if(e.isLabel)return 12;if(e.isDropdown)return 12;if(e.isBoolean)return 12;if(e.isRound)return 4}else if(this.isBoolean){if(e.isIcon)return 24;if(e.isLabel)return 20;if(e.isDropdown)return 20;if(e.isRound&&e.isBlock)return 24;if(e.isRound)return 20;if(e.isBoolean)return 8}return 8}},{key:"marginBetween",value:function(e,t){return e.isLabel&&t.isLabel?5:8}},{key:"draw",value:function(){var t="define-hat"===this.info.shape,i=this.children,s=this.isCommand,r=e.padding[this.info.shape]||e.padding.null,n=r[0],o=r[1],a="cat"===this.info.shape?16:0,c=function(e){this.y=e,this.width=0,this.height=s?40:32,this.children=[]},l=0,h=0,u=new c(a),p=function(){0===m.length?u.height+=n+o:(u.height-=11,u.y-=2),a+=u.height,m.push(u)};if(this.info.isRTL){var f,d=0,g=function(){i=i.slice(0,d).concat(i.slice(d,f).reverse()).concat(i.slice(f))};for(f=0;f<i.length;f++)i[f].isScript&&(g(),d=f+1);d<f&&g()}for(var y,v,m=[],k=0;k<i.length;k++){var b=i[k];if(b.el=b.draw(this),b.isScript&&this.isCommand)this.hasScript=!0,p(),b.y=a-1,m.push(b),h=Math.max(h,Math.max(1,b.width)),b.height=Math.max(29,b.height+3)-2,a+=b.height,u=new c(a),y=null;else if(b.isArrow)u.children.push(b),y=b;else{if(m.length||(v=b),y&&(u.width+=this.marginBetween(y,b)),null!=i[0]){var w=48-this.horizontalPadding(i[0]);(this.isCommand||this.isOutline)&&!b.isLabel&&!b.isIcon&&u.width<w&&(u.width=w)}b.isIcon&&0===k&&this.isCommand&&(u.height=Math.max(u.height,b.height+8)),b.x=u.width,u.width+=b.width,l=Math.max(l,u.width),b.isLabel||(u.height=Math.max(u.height,b.height)),u.children.push(b),y=b}}p();var A=i.length?this.horizontalPadding(i[0]):0,O=l+=A+(i.length?this.horizontalPadding(v):0);l=Math.max(this.hasScript?160:this.isHat?108:this.isCommand||this.isOutline?64:this.isReporter?48:0,l),this.isReporter&&(A+=(l-O)/2),this.height=a,this.width=h?Math.max(l,15+h):l,this.firstLine=m[0],this.innerWidth=l;for(var S=[],L=0;L<m.length;L++){var E=m[L];if(E.isScript)S.push(Oe.move(16,E.y,E.el));else for(var T=E.height,R=0;R<E.children.length;R++){var C=E.children[R];if(C.isArrow)S.push(Oe.move(l-32,this.height-28,C.el));else{var I=n+(T-C.height-n-o)/2;C.isLabel&&0===L?I-=1:t&&C.isLabel?I+=3:C.isIcon&&(I+=0|C.dy,this.isCommand&&0===L&&0===R&&(I+=4));var M=A+C.x;C.dx&&(M+=C.dx),S.push(Oe.move(M,E.y+I|0,C.el))}}}var N=this.drawSelf(l,this.height,m);return S.splice(0,0,N),this.info.color&&Oe.setProps(N,{fill:this.info.color,stroke:"rgba(0, 0, 0, 0.2)"}),Oe.group(S)}}],[{key:"shapes",get:function(){return{stack:Oe.stackRect,"c-block":Oe.stackRect,"if-block":Oe.stackRect,celse:Oe.stackRect,cend:Oe.stackRect,cap:Oe.capRect,reporter:Oe.pillRect,boolean:Oe.pointedRect,hat:Oe.hatRect,cat:Oe.catHat,"define-hat":Oe.procHatRect,ring:Oe.pillRect}}},{key:"padding",get:function(){return{hat:[24,8],cat:[24,8],"define-hat":[20,16],null:[4,4]}}}]),e}(),Be=function(){function e(e){n(this,e),this.label=ze(e.label),this.width=null}return s(e,[{key:"isComment",get:function(){return!0}},{key:"height",get:function(){return 20}},{key:"measure",value:function(){this.label.measure()}},{key:"draw",value:function(){var t=this.label.draw();return this.width=this.label.width+16,Oe.group([Oe.commentLine(this.hasBlock?e.lineLength:0,6),Oe.commentRect(this.width,this.height,{class:"sb3-comment"}),Oe.move(8,4,t)])}}],[{key:"lineLength",get:function(){return 12}}]),e}(),De=function(){function e(e){n(this,e),this.child=ze(e.child),this.width=null,this.height=null,this.y=0}return s(e,[{key:"isGlow",get:function(){return!0}},{key:"measure",value:function(){this.child.measure()}},{key:"drawSelf",value:function(){var e,t=this.child,i=this.width,s=this.height-1;return e=t.isScript?!t.isEmpty&&t.blocks[0].isHat?Oe.hatRect(i,s):t.isFinal?Oe.capRect(i,s):Oe.stackRect(i,s):t.drawSelf(i,s,[]),Oe.setProps(e,{class:"sb3-diff sb3-diff-ins"})}},{key:"draw",value:function(){var e=this.child,t=e.isScript?e.draw(!0):e.draw();return this.width=e.width,this.height=e.isBlock&&e.firstLine.height||e.height,Oe.group([t,this.drawSelf()])}}]),e}(),Pe=function(){function e(e){n(this,e),this.blocks=e.blocks.map(ze),this.y=0}return s(e,[{key:"isScript",get:function(){return!0}},{key:"measure",value:function(){var e,t=l(this.blocks);try{for(t.s();!(e=t.n()).done;){e.value.measure()}}catch(e){t.e(e)}finally{t.f()}}},{key:"draw",value:function(e){var t=[],i=1;this.width=0;var s,r=l(this.blocks);try{for(r.s();!(s=r.n()).done;){var n=s.value,o=e?0:2,a=n.draw();if(t.push(Oe.move(o,i,a)),this.width=Math.max(this.width,n.width),"-"===n.diff){var c=n.width,h=n.firstLine.height||n.height;t.push(Oe.move(o,i+h/2+1,Oe.strikethroughLine(c))),this.width=Math.max(this.width,n.width)}i+=n.height;var u=n.comment;if(u){var p=n.firstLine,f=n.innerWidth+2+Be.lineLength,d=i-n.height+p.height/2,g=u.draw();t.push(Oe.move(f,d-u.height/2,g)),this.width=Math.max(this.width,f+u.width)}}}catch(e){r.e(e)}finally{r.f()}var y=this.blocks[this.blocks.length-1];return this.height=i+1,e||this.isFinal||(this.height+=y.hasPuzzle?8:0),!e&&y.isGlow&&(this.height+=7),Oe.group(t)}}]),e}(),Fe=function(){function e(e,t){n(this,e),this.scripts=e.scripts.map(ze),this.width=null,this.height=null,this.el=null,this.defs=null,this.scale=t.scale}return s(e,[{key:"measure",value:function(){this.scripts.forEach((function(e){e.measure()}))}},{key:"render",value:function(e){if("function"==typeof e)throw Error("render() no longer takes a callback");this.measure();for(var t=0,i=0,s=[],r=0;r<this.scripts.length;r++){var n=this.scripts[r];i&&(i+=10),n.y=i,s.push(Oe.move(0,i,n.draw())),i+=n.height,r!==this.scripts.length-1&&(i+=36),t=Math.max(t,n.width+4)}this.width=t,this.height=i;var o=Oe.newSVG(t,i,this.scale);return o.appendChild(this.defs=Oe.withChildren(Oe.el("defs"),Re())),o.appendChild(Oe.setProps(Oe.group(s),{style:"transform: scale("+this.scale+")"})),this.el=o,o}},{key:"exportSVGString",value:function(){if(null==this.el)throw Error("call draw() first");var e=Te();this.defs.appendChild(e);var t=(new Oe.XMLSerializer).serializeToString(this.el);return this.defs.removeChild(e),t}},{key:"exportSVG",value:function(){return"data:image/svg+xml;utf8,"+this.exportSVGString().replace(/[#]/g,encodeURIComponent)}},{key:"toCanvas",value:function(e,t){t=t||1;var i=Oe.makeCanvas();i.width=Math.max(1,this.width*t*this.scale),i.height=Math.max(1,this.height*t*this.scale);var s=i.getContext("2d"),r=new Image;r.src=this.exportSVG(),r.onload=function(){s.save(),s.scale(t,t),s.drawImage(r,0,0),s.restore(),e(i)}}},{key:"exportPNG",value:function(e,t){this.toCanvas((function(t){URL&&URL.createObjectURL&&Blob&&t.toBlob?t.toBlob((function(t){e(URL.createObjectURL(t))}),"image/png"):e(t.toDataURL("image/png"))}),t)}}]),e}(),ze=function(e,t){return new(function(e){switch(e.constructor){case P:return Ce;case F:return Ie;case z:return Ne;case H:return xe;case G:return Be;case U:return De;case V:return Pe;case _:return Fe;default:throw Error("no view for "+e.constructor.name)}}(e))(e,t)};var He=Se.makeStyle;var Ge=window.scratchblocks=function(e){var i=e.document;function s(e,i){switch((i=t({style:"scratch2"},i)).scale=i.scale||1,i.style){case"scratch2":return me(e,i);case"scratch3":return ze(e,i);default:throw Error("Unknown style: "+i.style)}}function r(e,t){if("function"==typeof t)throw Error("render() no longer takes a callback");return s(e,t).render()}function n(e,s){s=t({inline:!1},s);var r=e.innerHTML.replace(/<br>\s?|\n|\r\n|\r/gi,"\n"),n=i.createElement("pre");n.innerHTML=r;var o=n.textContent;return s.inline&&(o=o.replace("\n","")),o}function o(e,t,s,r){var n;if(r.inline){n=i.createElement("span");var o="scratchblocks scratchblocks-inline";s.scripts[0]&&!s.scripts[0].isEmpty&&(o+=" scratchblocks-inline-"+s.scripts[0].blocks[0].shape),n.className=o,n.style.display="inline-block",n.style.verticalAlign="middle"}else(n=i.createElement("div")).className="scratchblocks";n.appendChild(t),e.innerHTML="",e.appendChild(n)}return function(e){te.init(e),he.measuring=te.makeCanvas().getContext("2d")}(e),function(e){Oe.init(e),Ce.measuring=Oe.makeCanvas().getContext("2d")}(e),{allLanguages:C,loadLanguages:I,stringify:function(e){return e.stringify()},Label:P,Icon:F,Input:z,Block:H,Comment:G,Script:V,Document:_,newView:s,read:n,parse:J,replace:o,render:r,renderMatching:function(e,s){e=e||"pre.blocks",s=t({style:"scratch2",inline:!1,languages:["en"],scale:1,read:n,parse:J,render:r,replace:o},s),[].slice.apply(i.querySelectorAll(e)).forEach((function(e){var t=s.read(e,s),i=s.parse(t,s),r=s.render(i,s);s.replace(e,r,i,s)}))},appendStyles:function(){i.head.appendChild(we()),i.head.appendChild(He())}}}(window);return Ge.appendStyles(),Ge}();

// Set up scratchblocks
scratchblocks.renderMatching('pre.blocks', {
  style:     'scratch3',   // Optional, defaults to 'scratch2'.
  languages: ['en', 'de'], // Optional, defaults to ['en'].
  scale: 1,                // Optional, defaults to 1
});