XFA - Fix font scale factors (bug 1720888)

- All the scale factors in for the substitution font were wrong because of different glyph positions between Liberation and the other ones:
    - regenerate all the factors
  - Text may have polish chars for example and in this case the glyph widths were wrong:
    - treat substitution font as a composite one
    - add a map glyphIndex to unicode for Liberation in order to generate width array for cid font

src/core/xfa/html_utils.js

@@ -560,6 +560,11 @@ function isPrintOnly(node) {
   );
 }
 
+function getCurrentPara(node) {
+  const stack = node[$getTemplateRoot]()[$extra].paraStack;
+  return stack.length ? stack[stack.length - 1] : null;
+}
+
 function setPara(node, nodeStyle, value) {
   if (value.attributes.class && value.attributes.class.includes("xfaRich")) {
     if (nodeStyle) {
@@ -570,13 +575,15 @@ function setPara(node, nodeStyle, value) {
         nodeStyle.width = "auto";
       }
     }
-    if (node.para) {
+
+    const para = getCurrentPara(node);
+    if (para) {
       // By definition exData are external data so para
       // has no effect on it.
       const valueStyle = value.attributes.style;
       valueStyle.display = "flex";
       valueStyle.flexDirection = "column";
-      switch (node.para.vAlign) {
+      switch (para.vAlign) {
         case "top":
           valueStyle.justifyContent = "start";
           break;
@@ -588,7 +595,7 @@ function setPara(node, nodeStyle, value) {
           break;
       }
 
-      const paraStyle = node.para[$toStyle]();
+      const paraStyle = para[$toStyle]();
       for (const [key, val] of Object.entries(paraStyle)) {
         if (!(key in valueStyle)) {
           valueStyle[key] = val;
@@ -598,7 +605,7 @@ function setPara(node, nodeStyle, value) {
   }
 }
 
-function setFontFamily(xfaFont, fontFinder, style) {
+function setFontFamily(xfaFont, node, fontFinder, style) {
   const name = stripQuotes(xfaFont.typeface);
   const typeface = fontFinder.find(name);
 
@@ -608,6 +615,12 @@ function setFontFamily(xfaFont, fontFinder, style) {
     if (fontFamily !== name) {
       style.fontFamily = `"${fontFamily}"`;
     }
+
+    const para = getCurrentPara(node);
+    if (para && para.lineHeight !== "") {
+      return;
+    }
+
     if (style.lineHeight) {
       // Already something so don't overwrite.
       return;