Print support for Windows Metro...

printing/printed_document.h

Index: printing/printed_document.h
diff --git a/printing/printed_document.h b/printing/printed_document.h
index bdb092fc3223d6055f138c63c8de9443e75eda61..b253f72ed7fd9be9a543b405215373106ca5d287 100644
--- a/printing/printed_document.h
+++ b/printing/printed_document.h
@@ -32,10 +32,21 @@ class PrintingContext;
 class PRINTING_EXPORT PrintedDocument
     : public base::RefCountedThreadSafe<PrintedDocument> {
  public:
+  // A delegate can be used to deviated the rendering of the pages to a
+  // specific destination.
+  class Delegate: public base::RefCountedThreadSafe<Delegate> {

[Albert Bodenhamer, 2012/06/15 18:41:24]

Perhaps "PrintDestinationInterface" instead of "Delegate"?  I'd go as far as to
pull it into its own header.

[MAD, 2012/06/19 14:24:10]

Good idea... Will do...

[MAD, 2012/06/28 15:48:14]

Done.

+   public:
+    virtual void SetPageCount(int page_count) = 0;
+    virtual void SetPageContent(int page_number,
+                                void* content,
+                                size_t content_size) = 0;
+  };
+
   // The cookie shall be unique and has a specific relationship with its
   // originating source and settings.
   PrintedDocument(const PrintSettings& settings,
                   PrintedPagesSource* source,
+                  Delegate* delegate,
                   int cookie);
 
   // Sets a page's data. 0-based. Takes metafile ownership.
@@ -136,7 +147,9 @@ class PRINTING_EXPORT PrintedDocument
   // any lock held. This is because it can't be changed after the object's
   // construction.
   struct Immutable {
-    Immutable(const PrintSettings& settings, PrintedPagesSource* source,
+    Immutable(const PrintSettings& settings,
+              PrintedPagesSource* source,
+              Delegate* delegate,
               int cookie);
     ~Immutable();
 
@@ -149,6 +162,9 @@ class PRINTING_EXPORT PrintedDocument
     // Document name. Immutable.
     string16 name_;
 
+    // A potential Delegate where to redirect page rendering if not NULL.
+    Delegate* delegate_;
+
     // Cookie to uniquely identify this document. It is used to make sure that a
     // PrintedPage is correctly belonging to the PrintedDocument. Since
     // PrintedPage generation is completely asynchronous, it could be easy to