@mlightcad/shx-parser
Version:
A TypeScript library for parsing AutoCAD SHX font files
3 lines (2 loc) • 29.8 kB
JavaScript
"use strict";Object.defineProperty(exports,Symbol.toStringTag,{value:"Module"});class x{static byteToSByte(t){return(t&127)-(t&128?128:0)}constructor(t){this.position=0,this.data=new DataView(t)}readBytes(t=1){this.data.byteLength<this.position+t&&this.throwOutOfRangeError(this.position+t);const e=new Uint8Array(this.data.buffer,this.position,t);return this.position+=t,e}skip(t){this.data.byteLength<this.position+t&&this.throwOutOfRangeError(this.position+t),this.position+=t}readUint8(){this.data.byteLength<this.position+1&&this.throwOutOfRangeError(this.position+1);const t=this.data.getUint8(this.position);return this.position+=1,t}readInt8(){this.data.byteLength<this.position+1&&this.throwOutOfRangeError(this.position+1);const t=this.data.getInt8(this.position);return this.position+=1,t}readUint16(t=!0){this.data.byteLength<this.position+2&&this.throwOutOfRangeError(this.position+2);const e=this.data.getUint16(this.position,t);return this.position+=2,e}readInt16(){this.data.byteLength<this.position+2&&this.throwOutOfRangeError(this.position+2);const t=this.data.getInt16(this.position,!0);return this.position+=2,t}readUint32(){this.data.byteLength<this.position+4&&this.throwOutOfRangeError(this.position+4);const t=this.data.getUint32(this.position,!0);return this.position+=4,t}readInt32(){this.data.byteLength<this.position+4&&this.throwOutOfRangeError(this.position+4);const t=this.data.getInt32(this.position,!0);return this.position+=4,t}readFloat32(){this.data.byteLength<this.position+4&&this.throwOutOfRangeError(this.position+4);const t=this.data.getFloat32(this.position,!0);return this.position+=4,t}readFloat64(){this.data.byteLength<this.position+8&&this.throwOutOfRangeError(this.position+8);const t=this.data.getFloat64(this.position,!0);return this.position+=8,t}setPosition(t){this.data.byteLength<t&&this.throwOutOfRangeError(t),this.position=t}isEnd(){return this.position===this.data.byteLength-1}get currentPosition(){return this.position}get length(){return this.data.byteLength}throwOutOfRangeError(t){throw new Error(`Position ${t} is out of range for the data length ${this.data.byteLength}!`)}}var d=(c=>(c.SHAPES="shapes",c.BIGFONT="bigfont",c.UNIFONT="unifont",c))(d||{});class et{parse(t){const n=this.parseHeader(t).split(" "),i=n[1].toLocaleLowerCase();if(!Object.values(d).includes(i))throw new Error(`Invalid font type: ${i}`);return{fileHeader:n[0],fontType:i,fileVersion:n[2]}}parseHeader(t){let e="",i=0;for(;t.currentPosition<t.length-2&&i<1024;){const s=t.readUint8();if(s===13){const o=t.currentPosition,r=t.readUint8(),h=t.readUint8();if(r===10&&h===26)break;t.setPosition(o),e+=String.fromCharCode(s)}else e+=String.fromCharCode(s);i++}return e.trim()}}const O=10,nt=[13,10,0];function H(c,t){if(t===0){c.orientation="horizontal";return}if(t===2){c.orientation="horizontal",c.dualOrientation=!0;return}c.orientation="vertical"}function _(c){const t={};for(const[e,n]of Object.entries(c))t[n]=e;return t}function C(c){const t=c.indexOf(0);return t<0?{name:null,bytecode:c}:{name:t>0?new TextDecoder("ascii").decode(c.subarray(0,t)):null,bytecode:c.subarray(t+1)}}class it{parse(t){try{t.readBytes(4);const e=t.readInt16();if(e<=0)throw new Error("Invalid shape count in font file");const n=[];for(let h=0;h<e;h++){const a=t.readUint16(),l=t.readUint16();l>0&&n.push({code:a,length:l})}const i={};for(const h of n)try{const a=t.readBytes(h.length);a.length===h.length&&(i[h.code]=a)}catch{console.warn(`Failed to read shape data for code ${h.code}`)}const s={},o={};for(const[h,a]of Object.entries(i)){const l=Number(h);if(l===0){s[l]=a;continue}const{name:u,bytecode:p}=C(a);s[l]=p,u&&(o[u]=l)}const r={data:s,names:Object.keys(o).length>0?o:void 0,codeToName:Object.keys(o).length>0?_(o):void 0,info:"",baseUp:8,baseDown:2,height:O,width:O,orientation:"horizontal",isExtended:!1};if(0 in s){const h=s[0];try{const a=new TextDecoder().decode(h);let l=h.findIndex(u=>nt.includes(u));l>=0&&(r.info=a.substring(0,l),l+3<h.length&&(r.baseUp=h[l+1],r.baseDown=h[l+2],r.height=r.baseDown+r.baseUp,r.width=r.height,H(r,h[l+3])))}catch{console.warn("Failed to parse font info block")}}return r}catch(e){const n=e instanceof Error?e.message:String(e);throw new Error(`Failed to parse shape font: ${n}`)}}}class st{parse(t){try{t.readInt16();const e=t.readInt16(),n=t.readInt16();if(e<=0)throw new Error("Invalid character count in font file");t.skip(n*4);const i=[];for(let r=0;r<e;r++){const h=t.readUint16(),a=t.readUint16(),l=t.readUint32();(h!==0||a!==0||l!==0)&&i.push({code:h,length:a,offset:l})}const s={};for(const r of i)try{t.setPosition(r.offset);const h=t.readBytes(r.length);h.length===r.length&&(s[r.code]=h)}catch{console.warn(`Failed to read bigfont data for code ${r.code}`)}const o={data:s,info:"",baseUp:8,baseDown:2,height:O,width:O,orientation:"horizontal",isExtended:!1};if(0 in s){const r=s[0];try{const h=this.utf8ArrayToStr(r);if(h.pos>=0){let a=h.text;for(;a.length>0&&a.charCodeAt(a.length-1)===0;)a=a.slice(0,-1);o.info=a;const l=this.parseBigfontMetrics(r,h.pos+1);l&&Object.assign(o,l)}}catch{console.warn("Failed to parse bigfont info block")}}return o}catch(e){const n=e instanceof Error?e.message:String(e);throw new Error(`Failed to parse big font: ${n}`)}}parseBigfontMetrics(t,e){let n=e;for(;n<t.length&&t[n]===0;)n++;const i=t.length-n;if(i<=0)return null;const s=o=>o===0?"horizontal":"vertical";if(i>=5){const o=t[n++];n++;const r=s(t[n++]),h=t[n++];return{baseUp:o,baseDown:0,height:o,width:h,orientation:r,isExtended:!0}}if(i===4&&t[n+1]===0&&t[n+3]>0&&t[n+3]!==t[n]){const o=t[n++];n++;const r=s(t[n++]),h=t[n];return{baseUp:o,baseDown:0,height:o,width:h,orientation:r,isExtended:!0}}if(i===4){const o=t[n++],r=t[n++],h=s(t[n++]);return{baseUp:o,baseDown:r,height:o+r,width:o+r,orientation:h,isExtended:!1}}if(i===3){const o=t[n++],r=t[n++],h=s(r),a=r===2;return{baseUp:o,baseDown:0,height:o,width:o,orientation:h,isExtended:a,verticalDualMode:a}}return null}utf8ArrayToStr(t){let e="",n=0;for(;n<t.length;){const i=t[n];switch(i>>4){case 0:case 1:case 2:case 3:case 4:case 5:case 6:case 7:e+=String.fromCharCode(i);break;case 12:case 13:{const s=t[n++];e+=String.fromCharCode((i&31)<<6|s&63);break}case 14:{const s=t[n++],o=t[n++];e+=String.fromCharCode((i&15)<<12|(s&63)<<6|(o&63)<<0);break}}if(e.charCodeAt(e.length-1)===0)break;n++}return{text:e,pos:n}}}class ot{parse(t){try{const e=t.readInt32();if(e<=0)throw new Error("Invalid character count in font file");const n=t.readInt16(),i=t.readBytes(n),s={data:{},info:"",baseUp:8,baseDown:2,height:O,width:O,orientation:"horizontal",isExtended:!1};try{const h=new TextDecoder().decode(i);let a=h.indexOf("\0");a>=0&&(s.info=h.substring(0,a),a+3<i.length&&(s.baseUp=i[a+1],s.baseDown=i[a+2],s.height=s.baseUp+s.baseDown,s.width=s.height,H(s,i[a+3])))}catch{console.warn("Failed to parse unifont info block")}const o={},r={};for(let h=0;h<e-1;h++)try{const a=t.readUint16(),l=t.readUint16();if(l>0){const u=t.readBytes(l);if(u.length===l){const{name:p,bytecode:g}=C(u);g.length>0&&(o[a]=g,p&&(r[p]=a))}}}catch{console.warn("Failed to read unifont character data");break}return s.data=o,s.names=Object.keys(r).length>0?r:void 0,s.codeToName=Object.keys(r).length>0?_(r):void 0,s}catch(e){const n=e instanceof Error?e.message:String(e);throw new Error(`Failed to parse unifont: ${n}`)}}}class G{static createParser(t){switch(t){case d.SHAPES:return new it;case d.BIGFONT:return new st;case d.UNIFONT:return new ot;default:throw new Error(`Unsupported font type: ${t}`)}}}const rt=1e-6,M=.2;class F{markAlignedAdvanceExplicit(t){return!1}}class at extends F{resolve(t,e){var s;const n=((s=t.lastPoint)==null?void 0:s.x)??0,i=t.polylines.some(o=>o.length>=2);return t.hasExplicitAdvance||!i&&Math.abs(n)>rt?n:e}}class E extends F{constructor(t=M){super(),this.cellWidthFactor=t}static isCenterOriginGlyph(t){return t.bbox.minX<-1e-6}static computeAdvance(t,e,n=M){if(!t.polylines.some(r=>r.length>=2))return e*n;const s=e*n,{maxX:o}=t.bbox;return E.isCenterOriginGlyph(t)?Math.max(o,e/2)+s:o+s}resolve(t,e){var n;return t.hasExplicitAdvance?((n=t.lastPoint)==null?void 0:n.x)??0:E.computeAdvance(t,e,this.cellWidthFactor)}markAlignedAdvanceExplicit(t){return!0}}const B=new E;class f{constructor(t=0,e=0){this.x=t,this.y=e}set(t,e){return this.x=t,this.y=e,this}length(){return Math.sqrt(this.x*this.x+this.y*this.y)}normalize(){const t=this.length();return t!==0&&(this.x/=t,this.y/=t),this}clone(){return new f(this.x,this.y)}add(t){return this.x+=t.x,this.y+=t.y,this}subtract(t){return this.x-=t.x,this.y-=t.y,this}multiply(t){return this.x*=t,this.y*=t,this}divide(t){return t!==0&&(this.x/=t,this.y/=t),this}multiplyScalars(t,e){return this.x*=t,this.y*=e,this}divideScalars(t,e){return t!==0&&(this.x/=t),e!==0&&(this.y/=e),this}distanceTo(t){const e=this.x-t.x,n=this.y-t.y;return Math.sqrt(e*e+n*n)}}function R(c){const{width:t,capHeight:e,descenderHeight:n,origin:i="baseline"}=c,s=e+n;return i==="top"?{minX:-t/2,maxX:t/2,minY:-s,maxY:0}:{minX:0,maxX:t,minY:-n,maxY:e}}function ct(c){return[c.minX,c.minY,c.maxX,c.maxY].every(Number.isFinite)}function ht(c,t,e=1e-6){return t.minX>=c.minX-e&&t.maxX<=c.maxX+e&&t.minY>=c.minY-e&&t.maxY<=c.maxY+e}function lt(c,t){return{minX:Math.min(c.minX,t.minX),minY:Math.min(c.minY,t.minY),maxX:Math.max(c.maxX,t.maxX),maxY:Math.max(c.maxY,t.maxY)}}function ut(c,t,e){const n=c.maxX-c.minX,i=c.maxY-c.minY;return`<rect x="${c.minX}" y="${-c.maxY}" width="${n}" height="${i}" fill="none" stroke="${t}" stroke-width="${e}"/>`}function Y(c,t){const e=c.maxX-c.minX,n=c.maxY-c.minY;return`<rect x="${c.minX}" y="${-c.maxY}" width="${e}" height="${n}" fill="${t}"/>`}function dt(c,t,e,n,i,s,o){const r=` stroke-dasharray="${o}"`;return`<line x1="${c}" y1="${-t}" x2="${e}" y2="${-n}" stroke="${i}" stroke-width="${s}"${r}/>`}function ft(c,t,e){const{capHeight:n,descenderHeight:i,origin:s="baseline"}=c,o=n+i,r=R(c);let h,a,l;s==="top"?(n>0&&(h={minX:r.minX,maxX:r.maxX,minY:-n,maxY:0}),i>0&&(a={minX:r.minX,maxX:r.maxX,minY:-o,maxY:-n}),l=-n):(n>0&&(h={minX:r.minX,maxX:r.maxX,minY:0,maxY:n}),i>0&&(a={minX:r.minX,maxX:r.maxX,minY:-i,maxY:0}),l=0);const g=[h?Y(h,"rgba(255, 0, 0, 0.06)"):"",a?Y(a,"rgba(255, 0, 0, 0.14)"):"",ut(r,t,e)];return l!==void 0&&i>0&&n>0&&g.push(dt(r.minX,l,r.maxX,l,t,e,"4 2")),`<g>${g.join("")}</g>`}class k{constructor(t,e=[],n=!1){this.lastPoint=t,this.polylines=e,this.hasExplicitAdvance=n}get bbox(){if(this._bbox)return this._bbox;let t=1/0,e=-1/0,n=1/0,i=-1/0;return this.polylines.forEach(s=>{s.forEach(o=>{t=Math.min(t,o.x),e=Math.max(e,o.x),n=Math.min(n,o.y),i=Math.max(i,o.y)})}),this._bbox={minX:t,minY:n,maxX:e,maxY:i},this._bbox}offset(t,e=!0){var n,i;return e?new k((n=this.lastPoint)==null?void 0:n.clone().add(t),this.polylines.map(s=>s.map(o=>o.clone().add(t))),this.hasExplicitAdvance):((i=this.lastPoint)==null||i.add(t),this.polylines.forEach(s=>s.forEach(o=>o.add(t))),this._bbox&&(this._bbox.maxX+=t.x,this._bbox.minX+=t.x,this._bbox.maxY+=t.y,this._bbox.minY+=t.y),this)}normalizeToOrigin(t=!1){const e=this.bbox;return this.offset(new f(-e.minX,-e.minY),t)}toSVG(t={}){const{strokeWidth:e="0.5%",strokeColor:n="black",isAutoFit:i=!1,fontCell:s}=t;let o,r;const h=a=>this.polylines.map(l=>{let u="";return l.forEach((p,g)=>{const{x:y,y:b}=a(p);u+=g===0?`M ${y} ${b} `:`L ${y} ${b} `}),`<path d="${u}" stroke="${n}" stroke-width="${e}" fill="none"/>`}).join("");if(s){const{padding:a=.1,expandToFit:l=!1,showFrame:u=!1,frameColor:p="red",frameStrokeWidth:g="0.5%"}=s,y=R(s),b=this.bbox;let m=y;l&&ct(b)&&!ht(y,b)&&(m=lt(y,b));const A=m.maxX-m.minX,w=m.maxY-m.minY,S=A*a,P=w*a,v=m.minX-S,J=m.maxX+S,Q=m.minY-P,N=m.maxY+P;r=h(X=>({x:X.x,y:-X.y}));const tt=u?ft(s,p,g):"";return o=`${v} ${-N} ${J-v} ${N-Q}`,`<svg width="100%" height="100%" viewBox="${o}" preserveAspectRatio="xMidYMid meet">${tt}${r}</svg>`}else if(i){const a=this.bbox,l=.2,u=a.maxX-a.minX,p=a.maxY-a.minY,g=u===0?p:u,y=p===0?u:p,b=a.minX-g*l,m=a.maxX+g*l,A=a.minY-y*l,w=a.maxY+y*l;r=h(S=>({x:S.x,y:-S.y})),o=`${b} ${-w} ${m-b} ${w-A}`}else o="0 0 20 20",r=h(a=>({x:a.x+5,y:-a.y+15}));return`<svg width="100%" height="100%" viewBox="${o}" preserveAspectRatio="xMidYMid meet">${r}</svg>`}}const U=8,$=48,gt=.4,pt=[52164,45795,49829,50150,54992,47610,54754,46532,51906,53947,49332,51706,46532,54224,52946,52714,52219,45755,51403,46532,53947,50410,49332,52219,52141,46532,50150,51120,50150,54992,51663,50119,53186,46532,46525,51365,52149,47016,46532,51889,51706,46025,47037,55031,48122,50935,47531,48122,51965,55e3];function I(c,t){const{height:e,width:n,baseUp:i,baseDown:s}=c,o=e>0?t/e:1,r=o*i,h=o*s;return{size:t,capHeight:r,descenderHeight:h,cellWidth:o*n,totalHeight:r+h}}function W(c,t,e){if(c.header.fontType!==d.SHAPES||!(0 in c.content.data))return!1;const n=-(e.descenderHeight+e.capHeight*.2);return t.bbox.minY<n}function D(c,t){const e=-(t.descenderHeight+t.capHeight*.05);return!(c.bbox.minY<e||c.bbox.maxY-c.bbox.minY<t.capHeight*.05)}function V(c,t,e){if(c.header.fontType!==d.BIGFONT||c.content.baseDown>0)return 0;const{height:n}=c.content;if(n<=0)return 0;const i=n*gt,s=[],o=new Set,r=a=>{if(o.has(a)||a<=255||!(a in c.content.data))return;o.add(a);const l=t(a);if(!l)return;const u=l.bbox.minY;u>0&&u<=i&&s.push(u)};for(const a of pt)if(r(a),s.length>=$)break;if(s.length<U){for(const a of Object.keys(c.content.data))if(r(Number(a)),s.length>=$)break}if(s.length<U)return 0;s.sort((a,l)=>a-l);const h=Math.floor(s.length/2);return s.length%2===0?(s[h-1]+s[h])/2:s[h]}function j(c,t,e){if(c.header.fontType!==d.UNIFONT)return!1;if(c.content.dualOrientation)return!0;const n=I(c.content,e);for(const i of[48,65,78,49]){if(!(i in c.content.data))continue;const s=t(i);if(s&&D(s,n))return!0}return!1}function yt(c,t,e,n=B,i=!1,s=0){var a;let o=c;if(t.header.fontType===d.BIGFONT&&s>0){const l=t.content.height>0?e.size/t.content.height:1;o=o.offset(new f(0,-s*l),!0)}if(t.header.fontType===d.UNIFONT||W(t,c,e)){const l=t.header.fontType===d.UNIFONT&&(i||t.content.dualOrientation||D(c,e));(t.header.fontType===d.UNIFONT?!l:!0)&&(o=o.offset(new f(0,e.capHeight),!0))}const r=n.resolve(o,e.cellWidth),h=n.markAlignedAdvanceExplicit(o)?!0:o.hasExplicitAdvance;return new k(new f(r,((a=o.lastPoint)==null?void 0:a.y)??0),o.polylines,h)}function z(c,t,e,n=B,i=!1,s=0){const o=I(t.content,e);return yt(c,t,o,n,i,s)}const L=Math.PI/4;class T{static fromBulge(t,e,n){const i=Math.max(-1,Math.min(1,n));return new T({start:t,end:e,bulge:i})}static fromOctant(t,e,n,i,s){return new T({center:t,radius:e,startOctant:n,octantCount:i,isClockwise:s})}constructor(t){if(t.start&&t.end&&t.bulge!==void 0){this.start=t.start.clone(),this.end=t.end.clone(),this.bulge=t.bulge,this.isClockwise=t.bulge<0;const e=this.end.clone().subtract(this.start),n=e.length();if(Math.abs(this.bulge)*n/2===0){this.radius=0,this.center=this.start.clone(),this.startAngle=Math.atan2(e.y,e.x),this.endAngle=this.startAngle;return}const s=4*Math.atan(Math.abs(this.bulge));this.radius=n/(2*Math.sin(s/2));const o=this.start.clone().add(e.clone().divide(2)),r=new f(-e.y,e.x);r.normalize(),r.multiply(Math.abs(this.radius*Math.cos(s/2))),this.center=o.clone(),this.isClockwise?this.center.subtract(r):this.center.add(r),this.startAngle=Math.atan2(this.start.y-this.center.y,this.start.x-this.center.x),this.endAngle=Math.atan2(this.end.y-this.center.y,this.end.x-this.center.x),this.isClockwise?this.endAngle>=this.startAngle&&(this.endAngle-=2*Math.PI):this.endAngle<=this.startAngle&&(this.endAngle+=2*Math.PI)}else if(t.center&&t.radius!==void 0&&t.startOctant!==void 0&&t.octantCount!==void 0&&t.isClockwise!==void 0){this.center=t.center.clone(),this.radius=t.radius,this.isClockwise=t.isClockwise,this.startAngle=t.startOctant*L;const e=(t.octantCount===0?8:t.octantCount)*L;this.endAngle=this.startAngle+(this.isClockwise?-e:e),this.start=this.center.clone().add(new f(this.radius*Math.cos(this.startAngle),this.radius*Math.sin(this.startAngle))),this.end=this.center.clone().add(new f(this.radius*Math.cos(this.endAngle),this.radius*Math.sin(this.endAngle)))}else throw new Error("Invalid arc parameters")}tessellate(t=Math.PI/18){if(this.radius===0)return[this.start.clone(),this.end.clone()];const e=[this.start.clone()],n=Math.abs(this.endAngle-this.startAngle),i=Math.max(1,Math.floor(n/t));for(let s=1;s<i;s++){const o=s/i,r=this.isClockwise?this.startAngle-o*n:this.startAngle+o*n;e.push(this.center.clone().add(new f(this.radius*Math.cos(r),this.radius*Math.sin(r))))}return e.push(this.end?this.end.clone():this.center.clone().add(new f(this.radius*Math.cos(this.endAngle),this.radius*Math.sin(this.endAngle)))),e}}const bt=Math.PI/18,mt=1e-6;class K{constructor(t){this.shapeCache=new Map,this.subshapeCache=new Map,this.shapeData=new Map,this.fontData=t}release(){this.shapeCache.clear(),this.subshapeCache.clear(),this.shapeData.clear()}getCharShape(t,e){const i=this.fontData.header.fontType===d.SHAPES&&!(0 in this.fontData.content.data)?e:e/this.fontData.content.height;return this.parseAndScale(t,{factor:i})}parseAndScale(t,e){if(t===0)return;let n;if(this.shapeCache.has(t))n=this.shapeCache.get(t);else{const i=this.fontData.content.data;if(i[t]){const s=this.prepareBigfontGlyphBytecode(t,i[t]),o=this.fontData.header.fontType!==d.BIGFONT;n=this.parseShape(s,{flushOnEnd:!0,initialPenDown:o}),this.shapeData.set(t,n),this.shapeCache.set(t,n)}}if(n){if(e.factor!==void 0)return this.scaleShapeByFactor(n,e.factor);if(e.height!==void 0){const i=e.width??e.height;return this.scaleShapeByHeightAndWidth(n,e.height,i)}else return n}}prepareBigfontGlyphBytecode(t,e){if(this.fontData.header.fontType!==d.BIGFONT||t<=255)return e;const n=t>>8&255,i=t&255;if(e.length>=2&&e[0]===n&&e[1]===i){let s=2;return e[s]===0&&s++,e.slice(s)}return e}isVerticalDualBigfontMarker(t,e,n){return this.fontData.content.verticalDualMode?n==="open"?t[e]===142:t[e]===143:!1}scaleShapeByFactor(t,e){var n;return new k((n=t.lastPoint)==null?void 0:n.clone().multiply(e),t.polylines.map(i=>i.map(s=>s.clone().multiply(e))),t.hasExplicitAdvance)}scaleShapeByHeightAndWidth(t,e,n){var u;const i=t.bbox,s=i.maxY-i.minY,o=i.maxX-i.minX,r=s>0?e/s:1,h=o>0?n/o:1,a=(u=t.lastPoint)==null?void 0:u.clone();a&&(a.x*=h,a.y*=r);const l=t.polylines.map(p=>p.map(g=>{const y=g.clone();return y.x*=h,y.y*=r,y}));return new k(a,l,t.hasExplicitAdvance)}shouldSkipVerticalFlagCommand(t=!1){const{content:e,header:n}=this.fontData;return n.fontType===d.BIGFONT?!e.verticalDualMode:e.dualOrientation?!t:e.orientation==="horizontal"}markAdvanceDefined(t){t.hasExplicitAdvance=!0}notePenUpPositioning(t){t.pendingTerminalAdvance=!0}clearPendingAdvance(t){t.pendingTerminalAdvance=!1}stateHasInk(t){return t.currentPolyline.length>1?!0:t.polylines.some(e=>e.length>=2)}finalizeAdvanceFlag(t){if(!t.pendingTerminalAdvance)return;const e=t.currentPoint.x;if(Math.abs(e)>mt){t.hasExplicitAdvance=!0;return}this.stateHasInk(t)||(t.hasExplicitAdvance=!0)}parseShape(t,e={}){let n=new f;const i=[];let s=[];const o=[];let r=e.initialPenDown??!1;r&&s.push(n.clone());const h={currentPoint:n,polylines:i,currentPolyline:s,sp:o,isPenDown:r,scale:1,flushEndPolyline:e.flushOnEnd??!1,hasExplicitAdvance:!1,pendingTerminalAdvance:!1};for(let a=0;a<t.length;a++){const l=t[a];l<=15?a=this.handleSpecialCommand(l,t,a,h):(this.clearPendingAdvance(h),this.handleVectorCommand(l,h))}return this.finalizeAdvanceFlag(h),this.buildShapeFromState(h)}buildShapeFromState(t){const e=t.polylines.map(n=>n.map(i=>i.clone()));return t.currentPolyline.length>1&&e.push(t.currentPolyline.map(n=>n.clone())),new k(t.currentPoint.clone(),e,t.hasExplicitAdvance)}handleSpecialCommand(t,e,n,i){let s=n;switch(t){case 0:this.finalizeAdvanceFlag(i),i.flushEndPolyline&&i.currentPolyline.length>1?(i.polylines.push(i.currentPolyline.slice()),i.currentPolyline=[]):i.flushEndPolyline&&(i.currentPolyline=[]),i.isPenDown=!1;break;case 1:this.clearPendingAdvance(i),i.isPenDown||i.currentPolyline.push(i.currentPoint.clone()),i.isPenDown=!0;break;case 2:i.isPenDown=!1,i.currentPolyline.length>1&&i.polylines.push(i.currentPolyline.slice()),i.currentPolyline=[];break;case 3:this.clearPendingAdvance(i),s++,i.scale/=e[s];break;case 4:this.clearPendingAdvance(i),s++,i.scale*=e[s];break;case 5:if(this.clearPendingAdvance(i),i.sp.length===4)throw new Error("The position stack is only four locations deep");i.sp.push(i.currentPoint.clone());break;case 6:this.clearPendingAdvance(i),i.currentPoint=i.sp.pop()??i.currentPoint,i.currentPolyline.length>1&&(i.polylines.push(i.currentPolyline.slice()),i.currentPolyline=[]),i.isPenDown&&i.currentPolyline.push(i.currentPoint.clone());break;case 7:this.clearPendingAdvance(i),s=this.handleSubshapeCommand(e,s,i);break;case 8:s=this.handleXYDisplacement(e,s,i);break;case 9:s=this.handleMultipleXYDisplacements(e,s,i);break;case 10:this.clearPendingAdvance(i),s=this.handleOctantArc(e,s,i);break;case 11:this.clearPendingAdvance(i),s=this.handleFractionalArc(e,s,i);break;case 12:this.clearPendingAdvance(i),s=this.handleBulgeArc(e,s,i);break;case 13:this.clearPendingAdvance(i),s=this.handleMultipleBulgeArcs(e,s,i);break;case 14:this.clearPendingAdvance(i),this.shouldSkipVerticalFlagCommand()&&(s=this.skipCode(e,++s));break}return s}handleVectorCommand(t,e){const n=(t&240)>>4,i=t&15,s=this.getVectorForDirection(i);e.currentPoint.add(s.multiply(n*e.scale)),e.isPenDown&&e.currentPolyline.push(e.currentPoint.clone())}getVectorForDirection(t){const e=new f;switch(t){case 0:e.x=1;break;case 1:e.x=1,e.y=.5;break;case 2:e.x=1,e.y=1;break;case 3:e.x=.5,e.y=1;break;case 4:e.y=1;break;case 5:e.x=-.5,e.y=1;break;case 6:e.x=-1,e.y=1;break;case 7:e.x=-1,e.y=.5;break;case 8:e.x=-1;break;case 9:e.x=-1,e.y=-.5;break;case 10:e.x=-1,e.y=-1;break;case 11:e.x=-.5,e.y=-1;break;case 12:e.y=-1;break;case 13:e.x=.5,e.y=-1;break;case 14:e.x=1,e.y=-1;break;case 15:e.x=1,e.y=-.5;break}return e}handleSubshapeCommand(t,e,n){let i=e,s=0,o,r=n.scale*this.fontData.content.baseUp,h=r;const a=n.currentPoint.clone();switch(n.currentPolyline.length>1&&(n.polylines.push(n.currentPolyline.slice()),n.currentPolyline=[]),this.fontData.header.fontType){case d.SHAPES:i++,s=t[i];break;case d.BIGFONT:if(i++,this.isVerticalDualBigfontMarker(t,i,"open"))return i;if(this.isVerticalDualBigfontMarker(t,i,"close"))return i+1;s=t[i],s===0&&(i++,s=t[i++]<<8|t[i++],a.x=x.byteToSByte(t[i++])*n.scale,a.y=x.byteToSByte(t[i++])*n.scale,this.fontData.content.isExtended?(h=t[i++]*n.scale,r=t[i]*n.scale):(r=t[i]*n.scale,h=r));break;case d.UNIFONT:i++,s=t[i++]<<8|t[i++],i--;break}if(s!==0)if(this.fontData.header.fontType===d.UNIFONT){const l=n.isPenDown;o=this.getScaledSubshapeAtInsertPoint(s,h,r,a,l),o!=null&&o.polylines.some(u=>u.length>=2)&&(n.polylines.push(...o.polylines.slice()),o.lastPoint&&(n.currentPoint=o.lastPoint.clone()),n.currentPolyline=[],n.isPenDown&&n.currentPolyline.push(n.currentPoint.clone()))}else if(this.fontData.header.fontType===d.SHAPES)o=this.getScaledSubshapeAtInsertPoint(s,h,r,a),o&&(n.polylines.push(...o.polylines.slice()),o.lastPoint&&(n.currentPoint=o.lastPoint.clone(),o.hasExplicitAdvance&&this.markAdvanceDefined(n))),n.currentPolyline=[],n.isPenDown&&n.currentPolyline.push(n.currentPoint.clone());else{if(o=this.getScaledSubshapeAtInsertPoint(s,h,r,a),o&&(n.polylines.push(...o.polylines.slice()),s===2&&o.lastPoint)){const l=o.lastPoint.x-a.x;l>n.currentPoint.x&&(n.currentPoint.x=l),this.markAdvanceDefined(n)}n.currentPolyline=[]}return i}handleXYDisplacement(t,e,n){let i=e;const s=new f;return s.x=x.byteToSByte(t[++i]),s.y=x.byteToSByte(t[++i]),n.currentPoint.add(s.multiply(n.scale)),n.isPenDown?n.currentPolyline.push(n.currentPoint.clone()):this.notePenUpPositioning(n),i}handleMultipleXYDisplacements(t,e,n){let i=e;for(;!(i+1>=t.length);){const s=new f;if(s.x=x.byteToSByte(t[++i]),s.y=x.byteToSByte(t[++i]),s.x===0&&s.y===0)break;n.currentPoint.add(s.multiply(n.scale)),n.isPenDown?n.currentPolyline.push(n.currentPoint.clone()):this.notePenUpPositioning(n)}return i}handleOctantArc(t,e,n){let i=e;const s=t[++i]*n.scale,o=x.byteToSByte(t[++i]),r=(o&112)>>4;let h=o&7;const a=o<0,l=Math.PI/4*r,u=n.currentPoint.clone().subtract(new f(Math.cos(l)*s,Math.sin(l)*s)),g=T.fromOctant(u,s,r,h,a).tessellate();return n.isPenDown&&(n.currentPolyline.pop(),n.currentPolyline.push(...g.slice())),n.currentPoint=g[g.length-1].clone(),i}handleFractionalArc(t,e,n){let i=e;const s=t[++i],o=t[++i],r=t[++i],h=t[++i],a=(r*255+h)*n.scale,l=x.byteToSByte(t[++i]),u=(l&112)>>4;let p=l&7;p===0&&(p=8),o!==0&&p--;const g=Math.PI/4;let y=g*p,b=bt,m=1;l<0&&(b=-b,y=-y,m=-1);let A=g*u,w=A+y;A+=g*s/256*m,w+=g*o/256*m;const S=n.currentPoint.clone().subtract(new f(a*Math.cos(A),a*Math.sin(A)));if(n.currentPoint=S.clone().add(new f(a*Math.cos(w),a*Math.sin(w))),n.isPenDown){let P=A;const v=[];if(v.push(S.clone().add(new f(a*Math.cos(P),a*Math.sin(P)))),b>0)for(;P+b<w;)P+=b,v.push(S.clone().add(new f(a*Math.cos(P),a*Math.sin(P))));else for(;P+b>w;)P+=b,v.push(S.clone().add(new f(a*Math.cos(P),a*Math.sin(P))));v.push(S.clone().add(new f(a*Math.cos(w),a*Math.sin(w)))),n.currentPolyline.push(...v)}return i}handleBulgeArc(t,e,n){let i=e;const s=new f;s.x=x.byteToSByte(t[++i]),s.y=x.byteToSByte(t[++i]);const o=x.byteToSByte(t[++i]);return n.currentPoint=this.handleArcSegment(n.currentPoint,s,o,n.scale,n.isPenDown,n.currentPolyline),i}handleMultipleBulgeArcs(t,e,n){let i=e;for(;!(i+1>=t.length);){const s=new f;if(s.x=x.byteToSByte(t[++i]),s.y=x.byteToSByte(t[++i]),s.x===0&&s.y===0||i+1>=t.length)break;const o=x.byteToSByte(t[++i]);n.currentPoint=this.handleArcSegment(n.currentPoint,s,o,n.scale,n.isPenDown,n.currentPolyline)}return i}skipCode(t,e){switch(t[e]){case 0:break;case 1:break;case 2:break;case 3:case 4:e++;break;case 5:break;case 6:break;case 7:switch(this.fontData.header.fontType){case d.SHAPES:e++;break;case d.BIGFONT:e++,this.isVerticalDualBigfontMarker(t,e,"open")?e++:this.isVerticalDualBigfontMarker(t,e,"close")?e+=2:t[e]===0&&(e+=this.fontData.content.isExtended?6:5);break;case d.UNIFONT:e+=2;break}break;case 8:e+=2;break;case 9:for(;e++,!(e>=t.length);){const s=t[e];if(e++,e>=t.length)break;const o=t[e];if(s===0&&o===0)break}break;case 10:e+=2;break;case 11:e+=5;break;case 12:e+=3;break;case 13:for(;e++,!(e>=t.length);){const s=t[e];if(e++,e>=t.length)break;const o=t[e];if(s===0&&o===0)break;e++}break}return e}getScaledSubshapeAtInsertPoint(t,e,n,i,s=!1){let o;if(s){const l=this.fontData.content.data[t];if(!l)return;o=this.parseShape(l,{initialPenDown:!0,flushOnEnd:!0})}else if(o=this.subshapeCache.get(t),!o){const l=this.fontData.content.data[t];if(!l)return;const u=this.fontData.header.fontType!==d.BIGFONT;o=this.parseShape(l,{flushOnEnd:!1,initialPenDown:u}),this.shapeData.set(t,o),this.subshapeCache.set(t,o)}const r=this.fontData.header.fontType===d.BIGFONT?void 0:n/this.fontData.content.baseUp,h=o.polylines.some(l=>l.length>0);return(r!==void 0?this.scaleShapeByFactor(o,r):this.scaleShapeByHeightAndWidth(h?o.normalizeToOrigin(!0):o,n,e)).offset(i,!1)}handleArcSegment(t,e,n,i,s,o){e.x*=i,e.y*=i,n<-127&&(n=-127);const r=t.clone();if(s)if(n===0)o.push(r.clone().add(e));else{const h=r.clone().add(e),l=T.fromBulge(r,h,n/127).tessellate();o.push(...l.slice(1))}return r.add(e),r}}class xt{constructor(t){if(t instanceof ArrayBuffer){const e=new x(t),i=new et().parse(e),o=G.createParser(i.fontType).parse(e);this.fontData={header:i,content:o}}else this.fontData=t;this.shapeParser=new K(this.fontData)}hasChar(t){return this.fontData.content.data[t]!==void 0}hasShape(t){return this.getShapeCode(t)!==void 0}getShapeCode(t){const e=this.fontData.content.names;if(e)return e[t.toUpperCase()]}getShapeName(t){var i;const e=(i=this.fontData.content.codeToName)==null?void 0:i[t];if(e!==void 0)return e;const n=this.fontData.content.names;if(n){for(const[s,o]of Object.entries(n))if(o===t)return s}}getFontMetrics(t){return I(this.fontData.content,t)}getLayoutCharShape(t,e,n=B){const i=this.getCharShape(t,e);if(i)return z(i,this.fontData,e,n,this.usesUnifontBaselineOriginFont(e),this.getBigfontBaselineInkPaddingNative())}getBigfontBaselineInkPaddingNative(){if(this.bigfontBaselineInkPaddingNative===void 0){const t=this.fontData.content.height;this.bigfontBaselineInkPaddingNative=V(this.fontData,e=>this.getCharShape(e,t))}return this.bigfontBaselineInkPaddingNative}usesUnifontBaselineOriginFont(t){return this.unifontBaselineOriginFont===void 0&&(this.unifontBaselineOriginFont=j(this.fontData,e=>this.getCharShape(e,t),t)),this.unifontBaselineOriginFont}getShapeByName(t,e){const n=this.getShapeCode(t);if(n!==void 0)return this.getCharShape(n,e)}getCharShape(t,e){return this.shapeParser.getCharShape(t,e)}release(){this.shapeParser.release()}}function Pt(c){if(c.lastPoint)return c.lastPoint.x;const{minX:t,maxX:e}=c.bbox;return e-t}function q(c,t,e,n=B){const i=I(t.content,e);return n.resolve(c,i.cellWidth)}function Z(c,t,e=0){return c.offset(new f(t,e),!0)}function wt(c,t=0,e={}){const n=e.advance??B;let i=0;const s=[];for(const{font:o,code:r,size:h}of c){const a=o.getLayoutCharShape(r,h,n);a&&(s.push({shape:Z(a,i,t),x:i}),i+=q(a,o.fontData,h,n))}return s}exports.DEFAULT_INK_WIDTH_CELL_FACTOR=M;exports.InkWidthAdvanceStrategy=E;exports.Point=f;exports.ShxAdvanceWidthStrategy=F;exports.ShxContentParserFactory=G;exports.ShxFont=xt;exports.ShxFontType=d;exports.ShxNativeAdvanceStrategy=at;exports.ShxShape=k;exports.ShxShapeParser=K;exports.alignShxGlyphForLayout=z;exports.computeFontMetrics=I;exports.defaultAdvanceWidthStrategy=B;exports.detectBigfontBaselineInkPadding=V;exports.detectUnifontBaselineOriginFont=j;exports.getAdvanceWidth=Pt;exports.layoutTextRun=wt;exports.placeGlyphOnBaseline=Z;exports.resolveAdvanceWidth=q;exports.shapeEncodedWithTopOrigin=W;exports.splitShapeNameAndBytecode=C;exports.unifontUsesBaselineOrigin=D;
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