Linux: Refactor printing to be more like Windows/Mac....

printing/printed_document.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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.
 
 #ifndef PRINTING_PRINTED_DOCUMENT_H_
 #define PRINTING_PRINTED_DOCUMENT_H_
 
 #include <map>
 
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
 #include "base/string16.h"
 #include "base/synchronization/lock.h"
 #include "googleurl/src/gurl.h"
 #include "printing/print_settings.h"
 #include "printing/native_metafile.h"
 #include "ui/gfx/native_widget_types.h"
 
 class FilePath;
 class MessageLoop;
 
 namespace gfx {
 class Font;
 }
 
 namespace printing {
 
 class PrintedPage;
 class PrintedPagesSource;
+class PrintingContextCairo;
 
 // A collection of rendered pages. The settings are immutable. If the print
 // settings are changed, a new PrintedDocument must be created.
 // Warning: May be accessed from many threads at the same time. Only one thread
 // will have write access. Sensible functions are protected by a lock.
 // Warning: Once a page is loaded, it cannot be replaced. Pages may be discarded
 // under low memory conditions.
 class PrintedDocument : public base::RefCountedThreadSafe<PrintedDocument> {
  public:
   // The cookie shall be unique and has a specific relationship with its
   // originating source and settings.
   PrintedDocument(const PrintSettings& settings,
                   PrintedPagesSource* source,
                   int cookie);
 
   // Sets a page's data. 0-based. Takes metafile ownership.
   // Note: locks for a short amount of time.
   void SetPage(int page_number, NativeMetafile* metafile, double shrink,
                const gfx::Size& paper_size, const gfx::Rect& page_rect,
                bool has_visible_overlays);
 
   // Retrieves a page. If the page is not available right now, it
   // requests to have this page be rendered and returns false.
   // Note: locks for a short amount of time.
   bool GetPage(int page_number, scoped_refptr<PrintedPage>* page);
 
   // Draws the page in the context.
   // Note: locks for a short amount of time in debug only.
+#if defined(OS_WIN) || defined(OS_MAC)
   void RenderPrintedPage(const PrintedPage& page,
                          gfx::NativeDrawingContext context) const;
+#elif defined(OS_POSIX)
+  void RenderPrintedPage(const PrintedPage& page,
+                         PrintingContextCairo* context) const;
+#endif
 
   // Returns true if all the necessary pages for the settings are already
   // rendered.
   // Note: locks while parsing the whole tree.
   bool IsComplete() const;
 
   // Disconnects the PrintedPage source (PrintedPagesSource). It is done when
   // the source is being destroyed.
   void DisconnectSource();
 
@@ skipping 131 matching lines @@
 
   // All the immutable members.
   const Immutable immutable_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintedDocument);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PRINTED_DOCUMENT_H_