@doegis/core/views/2d/engine/webgl/GlyphSource.js

DOE GIS API

import t from"../../../../request.js";import e from"../../../../core/pbf.js";class s{constructor(t){for(this._metrics=[],this._bitmaps=[];t.next();)switch(t.tag()){case 1:{const e=t.getMessage();for(;e.next();)switch(e.tag()){case 3:{const t=e.getMessage();let s,a,r,n,i,c,g;for(;t.next();)switch(t.tag()){case 1:s=t.getUInt32();break;case 2:a=t.getBytes();break;case 3:r=t.getUInt32();break;case 4:n=t.getUInt32();break;case 5:i=t.getSInt32();break;case 6:c=t.getSInt32();break;case 7:g=t.getUInt32();break;default:t.skip()}t.release(),s&&(this._metrics[s]={width:r,height:n,left:i,top:c,advance:g},this._bitmaps[s]=a);break}default:e.skip()}e.release();break}default:t.skip()}}getMetrics(t){return this._metrics[t]}getBitmap(t){return this._bitmaps[t]}}class a{constructor(){this._ranges=[]}getRange(t){return this._ranges[t]}addRange(t,e){this._ranges[t]=e}}class r{constructor(t){this._glyphInfo={},this._baseURL=t}getRange(a,r,n){const i=this._getFontStack(a);if(i.getRange(r))return Promise.resolve();const c=256*r,g=c+255,o=this._baseURL.replace("{fontstack}",a).replace("{range}",c+"-"+g);return t(o,{responseType:"array-buffer",...n}).then((t=>{i.addRange(r,new s(new e(new Uint8Array(t.data),new DataView(t.data))))}))}getGlyph(t,e){const s=this._getFontStack(t);if(!s)return;const a=Math.floor(e/256);if(a>256)return;const r=s.getRange(a);return r?{metrics:r.getMetrics(e),bitmap:r.getBitmap(e)}:void 0}_getFontStack(t){let e=this._glyphInfo[t];return e||(e=this._glyphInfo[t]=new a),e}}export{r as default};