Unfork VectorPlatformCanvas.

printing/native_metafile.h

 // 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_NATIVE_METAFILE_H_
 #define PRINTING_NATIVE_METAFILE_H_
 
 #include "base/basictypes.h"
 #include "build/build_config.h"
 #include "ui/gfx/native_widget_types.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <vector>
 #elif defined(OS_MACOSX)
 #include <ApplicationServices/ApplicationServices.h>
 #include <CoreFoundation/CoreFoundation.h>
 #include "base/mac/scoped_cftyperef.h"
 #endif
 
 class FilePath;
 
 namespace gfx {
 class Point;
 class Rect;
 class Size;
 }
 
+namespace skia {
+class PlatformDevice;
+}
+
 #if defined(OS_CHROMEOS)
 namespace base {
 class  FileDescriptor;
 }
 #endif
 
 namespace printing {
 
 // This class creates a graphics context that renders into a data stream
 // (usually PDF or EMF).
 class NativeMetafile {
  public:
   virtual ~NativeMetafile() {}
 
   // Initializes a fresh new metafile for rendering. Returns false on failure.
   // Note: It should only be called from within the renderer process to allocate
   // rendering resources.
   virtual bool Init() = 0;
 
   // Initializes the metafile with the data in |src_buffer|. Returns true
   // on success.
   // Note: It should only be called from within the browser process.
   virtual bool InitFromData(const void* src_buffer, uint32 src_buffer_size) = 0;
 
+  // This method calls StartPage and then returns an appropriate
+  // VectorPlatformDevice implementation bound to the context created by
+  // StartPage or NULL on error.
+  virtual skia::PlatformDevice* StartPageForVectorCanvas(
+      const gfx::Size& page_size, const gfx::Point& content_origin,
+      const float& scale_factor) = 0;
+
   // Prepares a context for rendering a new page at the specified
   // |content_origin| with the given |page_size| and a |scale_factor| to use for
   // the drawing. The units are in points (=1/72 in). Returns true on success.
   virtual bool StartPage(const gfx::Size& page_size,
                          const gfx::Point& content_origin,
                          const float& scale_factor) = 0;
 
   // Closes the current page and destroys the context used in rendering that
   // page. The results of current page will be appended into the underlying
   // data stream. Returns true on success.
@@ skipping 103 matching lines @@
   // Returns true if writing succeeded.
   virtual bool SaveToFD(const base::FileDescriptor& fd) const = 0;
 #endif  // if defined(OS_CHROMEOS)
 
 #endif
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_NATIVE_METAFILE_H_