Adding functionality to print PDF embedded in the html page.

chrome/renderer/chrome_ppb_pdf_impl.cc

 // Copyright (c) 2011 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/renderer/chrome_ppb_pdf_impl.h"
 
 #include "base/metrics/histogram.h"
 #include "base/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/common/render_messages.h"
+#include "chrome/renderer/print_web_view_helper.h"
 #include "content/public/common/child_process_sandbox_support_linux.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view.h"
 #include "grit/webkit_resources.h"
 #include "grit/webkit_strings.h"
 #include "ppapi/c/pp_resource.h"
 #include "ppapi/c/private/ppb_pdf.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/shared_impl/resource_tracker.h"
 #include "ppapi/shared_impl/var.h"
 #include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebElement.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPluginContainer.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebNode.h"

[Lei Zhang, 2012/01/12 22:10:20]

nit: WebNode before WebPluginContainer.

 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "unicode/usearch.h"
 #include "webkit/plugins/ppapi/host_globals.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 #include "webkit/plugins/ppapi/ppb_image_data_impl.h"
 
@@ skipping 291 matching lines @@
       render_view->GetRoutingId()));
 }
 
 void SaveAs(PP_Instance instance_id) {
   PluginInstance* instance = HostGlobals::Get()->GetInstance(instance_id);
   if (!instance)
     return;
   instance->delegate()->SaveURLAs(instance->plugin_url());
 }
 
+void Print(PP_Instance instance_id) {
+  PluginInstance* instance = HostGlobals::Get()->GetInstance(instance_id);
+  if (!instance)
+    return;
+
+  WebView* view = instance->container()->element().document().frame()->view();

[Lei Zhang, 2012/01/12 22:10:20]

nit: you can make instance->container()->element() a variable and then you don't
have to write it out again on line 349.

+  content::RenderView* render_view = content::RenderView::FromWebView(view);
+
+  PrintWebViewHelper* print_view_helper = PrintWebViewHelper::Get(render_view);
+  if (print_view_helper) {
+    print_view_helper->PrintNode(instance->container()->element());
+  }
+}
+
 const PPB_PDF ppb_pdf = {
   &GetLocalizedString,
   &GetResourceImage,
   &GetFontFileWithFallback,
   &GetFontTableForPrivateFontFile,
   &SearchString,
   &DidStartLoading,
   &DidStopLoading,
   &SetContentRestriction,
   &HistogramPDFPageCount,
   &UserMetricsRecordAction,
   &HasUnsupportedFeature,
-  &SaveAs
+  &SaveAs,
+  &Print
 };
 
 // static
 const PPB_PDF* PPB_PDF_Impl::GetInterface() {
   return &ppb_pdf;
 }
 
 }  // namespace chrome