avoid font lookup by id in showText

fonts.js

@@ -413,6 +413,7 @@ function getUnicodeRangeFor(value) {
 var Font = (function() {
   var constructor = function font_constructor(name, file, properties) {
     this.name = name;
+    this.textMatrix = properties.textMatrix || IDENTITY_MATRIX;
     this.encoding = properties.encoding;
 
     // If the font is to be ignored, register it like an already loaded font

pdf.js

@@ -3925,24 +3925,24 @@ var CanvasGraphics = (function() {
     showText: function(text) {
       // TODO: apply charSpacing, wordSpacing, textHScale
 
-      this.ctx.save();
+      var ctx = this.ctx;
-      this.ctx.transform.apply(this.ctx, this.current.textMatrix);
+      var current = this.current;
-      this.ctx.scale(1, -1);
+
+      ctx.save();
+      ctx.transform.apply(ctx, current.textMatrix);
+      ctx.scale(1, -1);
 
       if (this.ctx.$showText) {
-        this.ctx.$showText(this.current.y, Fonts.charsToUnicode(text));
+        ctx.$showText(current.y, Fonts.charsToUnicode(text));
       } else {
         text = Fonts.charsToUnicode(text);
-        this.ctx.translate(this.current.x, -1 * this.current.y);
+        ctx.translate(this.current.x, -1 * this.current.y);
 
         var font = this.current.font;
-        if (font) {
+        if (font)
-          var fontInfo = Fonts.lookupById(font.id);
+          ctx.transform.apply(ctx, font.textMatrix);
-          if (fontInfo && fontInfo.properties.textMatrix)
+        ctx.fillText(text, 0, 0);
-            this.ctx.transform.apply(this.ctx, fontInfo.properties.textMatrix);
+        current.x += Fonts.measureText(text);
-        }
-        this.ctx.fillText(text, 0, 0);
-        this.current.x += Fonts.measureText(text);
       }
 
       this.ctx.restore();