Add paper size support for printing to local printer on Windows.

printing/printing_context_win.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 "printing/printing_context_win.h"
 
 #include <winspool.h>
 
 #include <algorithm>
 
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "printing/backend/print_backend.h"
 #include "printing/backend/printing_info_win.h"
 #include "printing/backend/win_helper.h"
 #include "printing/print_job_constants.h"
 #include "printing/print_settings_initializer_win.h"
 #include "printing/printed_document.h"
 #include "printing/printing_utils.h"
 #include "printing/units.h"
@@ skipping 313 matching lines @@
         dev_mode->dmFields |= DM_DUPLEX;
         dev_mode->dmDuplex = DMDUP_SIMPLEX;
         break;
       default:  // UNKNOWN_DUPLEX_MODE
         break;
     }
 
     dev_mode->dmFields |= DM_ORIENTATION;
     dev_mode->dmOrientation = settings_.landscape() ? DMORIENT_LANDSCAPE :
                                                       DMORIENT_PORTRAIT;
+
+    const PrintSettings::RequestedMedia& requested_media =
+        settings_.requested_media();
+    static const int kFromUm = 100;  // Windows uses 0.1mm.
+    int width = requested_media.size_microns.width() / kFromUm;
+    int height = requested_media.size_microns.height() / kFromUm;
+    uint32 id = 0;
+    if (base::HexStringToUInt(requested_media.vendor_id, &id) && id) {
+      dev_mode->dmFields |= DM_PAPERSIZE;
+      dev_mode->dmPaperSize = static_cast<short>(id);
+    } else if (width > 0 && height > 0) {
+      dev_mode->dmFields |= DM_PAPERWIDTH;
+      dev_mode->dmPaperWidth = width;
+      dev_mode->dmFields |= DM_PAPERLENGTH;
+      dev_mode->dmPaperLength = height;
+    }
   }
 
   // Update data using DocumentProperties.
   scoped_dev_mode = CreateDevMode(printer, scoped_dev_mode.get());
   if (!scoped_dev_mode)
     return OnError();
 
   // Set printer then refresh printer settings.
   if (!AllocateContext(settings_.device_name(), scoped_dev_mode.get(),
                        &context_)) {
@@ skipping 339 matching lines @@
 
   if (dialog_options.hDevMode != NULL)
     GlobalFree(dialog_options.hDevMode);
   if (dialog_options.hDevNames != NULL)
     GlobalFree(dialog_options.hDevNames);
 
   return context_ ? OK : FAILED;
 }
 
 }  // namespace printing