Rasterize page before printing.

chrome/browser/printing/print_view_manager.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 "chrome/browser/printing/print_view_manager.h"
 
 #include <map>
 
 #include "base/bind.h"
+#include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/metrics/histogram.h"
 #include "base/timer.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/printing/print_error_dialog.h"
 #include "chrome/browser/printing/print_job.h"
 #include "chrome/browser/printing/print_job_manager.h"
 #include "chrome/browser/printing/print_preview_tab_controller.h"
 #include "chrome/browser/printing/print_view_manager_observer.h"
 #include "chrome/browser/printing/printer_query.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/webui/print_preview/print_preview_ui.h"
 #include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/print_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
 #include "grit/generated_resources.h"
@@ skipping 177 matching lines @@
   if (!OpportunisticallyCreatePrintJob(params.document_cookie))
     return;
 
   PrintedDocument* document = print_job_->document();
   if (!document || params.document_cookie != document->cookie()) {
     // Out of sync. It may happen since we are completely asynchronous. Old
     // spurious messages can be received if one of the processes is overloaded.
     return;
   }
 
-#if defined(OS_WIN)
-  // http://msdn2.microsoft.com/en-us/library/ms535522.aspx
-  // Windows 2000/XP: When a page in a spooled file exceeds approximately 350
-  // MB, it can fail to print and not send an error message.
-  if (params.data_size && params.data_size >= 350*1024*1024) {
-    NOTREACHED() << "size:" << params.data_size;
-    TerminatePrintJob(true);
-    web_contents()->Stop();
-    return;
-  }
-#endif
-
 #if defined(OS_WIN) || defined(OS_MACOSX)
   const bool metafile_must_be_valid = true;
 #elif defined(OS_POSIX)
   const bool metafile_must_be_valid = expecting_first_page_;
   expecting_first_page_ = false;
 #endif
 
   base::SharedMemory shared_buf(params.metafile_data_handle, true);
   if (metafile_must_be_valid) {
     if (!shared_buf.Map(params.data_size)) {
       NOTREACHED() << "couldn't map";
       web_contents()->Stop();
       return;
     }
   }
 
-  scoped_ptr<Metafile> metafile(new NativeMetafile);
+  scoped_ptr<NativeMetafile> metafile(new NativeMetafile);
   if (metafile_must_be_valid) {
     if (!metafile->InitFromData(shared_buf.memory(), params.data_size)) {
       NOTREACHED() << "Invalid metafile header";
       web_contents()->Stop();
       return;
     }
   }
 
+#if defined(OS_WIN)
+  bool big_emf = (params.data_size && params.data_size >= kMetafileMaxSize);
+  const CommandLine* cmdline = CommandLine::ForCurrentProcess();
+  if (big_emf ||
+      (cmdline && cmdline->HasSwitch(switches::kPrintRaster)) ||
+      (!print_job_->settings().supports_alpha_blend() &&
+       IsAlphaBlendUsed(*metafile))) {
+    int raster_size = std::min(params.page_size.GetArea(), 16*1024*1024);
+    scoped_ptr<NativeMetafile> raster_metafile(RasterizeMetafile(*metafile,
+                                                                 raster_size));
+    if (raster_metafile.get()) {
+      metafile.swap(raster_metafile);
+    } else if (big_emf) {
+      // Don't fall back to emf here.
+      NOTREACHED() << "size:" << params.data_size;
+      TerminatePrintJob(true);
+      web_contents()->Stop();
+      return;
+    }
+  }
+
+#endif
+
   // Update the rendered document. It will send notifications to the listener.
   document->SetPage(params.page_number,
                     metafile.release(),
                     params.actual_shrink,
                     params.page_size,
                     params.content_area);
 
   ShouldQuitFromInnerMessageLoop();
 }
 
@@ skipping 385 matching lines @@
   scoped_refptr<printing::PrinterQuery> printer_query;
   print_job_manager->PopPrinterQuery(cookie, &printer_query);
   if (!printer_query.get())
     return;
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&PrinterQuery::StopWorker, printer_query.get()));
 }
 
 }  // namespace printing