Linux: Take into account the weight/italic parameters when mapping fonts on Linux.

pdf/pdfium/pdfium_engine.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "pdf/pdfium/pdfium_engine.h"
 
 #include <math.h>
 
 #include "base/json/json_writer.h"
 #include "base/logging.h"
@@ skipping 203 matching lines @@
       if (PDFFontSubstitutions[i].italic)
         description.set_italic(true);
       break;
     }
   }
 
   if (i == arraysize(PDFFontSubstitutions)) {
     // TODO(kochi): Pass the face in UTF-8. If face is not encoded in UTF-8,
     // convert to UTF-8 before passing.
     description.set_face(face);
+    int normalized_weight = std::min(std::max(weight, 100), 900);
+    normalized_weight = (normalized_weight / 100) - 1;

[jam, 2014/06/10 05:47:07]

nit: put the 100 and 900 into constants

[Lei Zhang, 2014/06/10 07:10:27]

Done.

+    description.set_weight(
+        static_cast<PP_BrowserFont_Trusted_Weight>(normalized_weight));
+    description.set_italic(italic > 0);
   }
 
   if (!pp::PDF::IsAvailable()) {
     NOTREACHED();
     return NULL;
   }
 
   PP_Resource font_resource = pp::PDF::GetFontFileWithFallback(
       pp::InstanceHandle(g_last_instance_id),
       &description.pp_font_description(),
@@ skipping 3144 matching lines @@
       if (page_width > *max_page_width) {
         *max_page_width = page_width;
       }
     }
   }
   FPDF_CloseDocument(doc);
   return true;
 }
 
 }  // namespace chrome_pdf