Merge branch stretchy-chars into master

Author: dpvc

mathjax3-ts/output/chtml.ts

@@ -29,7 +29,10 @@ import {MmlNode} from '../core/MmlTree/MmlNode.js';
 import {HTMLNodes} from '../util/HTMLNodes.js';
 import {CHTMLWrapper} from './chtml/Wrapper.js';
 import {CHTMLWrapperFactory} from './chtml/WrapperFactory.js';
+import {FontData} from './chtml/FontData.js';
+import {TeXFont} from './chtml/fonts/tex.js';
 import {percent} from '../util/lengths.js';
+import {BBox} from './chtml/BBox.js';
 
 /*****************************************************************/
 /*
@@ -43,14 +46,16 @@ export class CHTML extends AbstractOutputJax {
         ...AbstractOutputJax.OPTIONS,
         scale: 1,                      // Global scaling factor for all expressions
         skipAttributes: {},            // RFDa and other attributes NOT to copy to CHTML output
-        CHTMLWrapperFactory: null      // The CHTMLWrapper factory to use
+        CHTMLWrapperFactory: null,     // The CHTMLWrapper factory to use
+        font: null                     // The FontData object to use
     };
 
     /*
-     *  Used to store the HTMLNodes factory and the CHTMLWraper factory.
+     *  Used to store the HTMLNodes factory, the CHTMLWraper factory, and FontData object.
      */
     public nodes: HTMLNodes;
     public factory: CHTMLWrapperFactory;
+    public font: FontData;
 
     /*
      * The MathDocument for the math we find
@@ -78,6 +83,7 @@ export class CHTML extends AbstractOutputJax {
         this.factory = this.options.CHTMLWrapperFactory || new CHTMLWrapperFactory();
         this.factory.chtml = this;
         this.nodes = new HTMLNodes();
+        this.font = this.options.font || new TeXFont();
     }
 
     /*
@@ -105,6 +111,21 @@ export class CHTML extends AbstractOutputJax {
         return node;
     }
 
+    /*
+     * @param{MathItem} math      The MathItem to get the bounding box for
+     * @param{MathDocument} html  The MathDocument for the math
+     */
+    public getBBox(math: MathItem, html: MathDocument) {
+        this.document = html;
+        this.math = math;
+        this.nodes.document = html.document;
+        math.root.setTeXclass(null);
+        this.nodeMap = new Map<MmlNode, CHTMLWrapper>();
+        let bbox = this.factory.wrap(math.root).getBBox();
+        this.nodeMap = null;
+        return bbox;
+    }
+
     /*
      * @override
      */

mathjax3-ts/output/chtml/BBox.ts

@@ -144,7 +144,7 @@ export class BBox {
             this.h = scale * cbox.h;
         }
         if (scale * cbox.d > this.d) {
-            this.d = scale*cbox.d;
+            this.d = scale * cbox.d;
         }
     }