Connect Skia PDF backend to printing subsystem.

printing/pdf_metafile_skia.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_PDF_METAFILE_SKIA_H_
+#define PRINTING_PDF_METAFILE_SKIA_H_
+
+#include "base/basictypes.h"
+#include "base/logging.h"
+#include "base/scoped_ptr.h"
+#include "build/build_config.h"
+#include "printing/native_metafile.h"
+
+#if defined(OS_WIN)
+#include <windows.h>
+#endif
+
+namespace printing {
+
+struct PdfMetafileSkiaData;
+
+// This class uses Skia graphics library to generate a PDF document.
+class PdfMetafileSkia : public NativeMetafile {
+ public:
+  virtual ~PdfMetafileSkia();
+
+  // NativeMetafile interface
+  virtual bool Init();
+  virtual bool InitFromData(const void* src_buffer, uint32 src_buffer_size);
+
+  virtual skia::PlatformDevice* StartPageForVectorCanvas(
+      const gfx::Size& page_size,
+      const gfx::Point& content_origin,
+      const float& scale_factor);
+  virtual bool StartPage(const gfx::Size& page_size,
+                         const gfx::Point& content_origin,
+                         const float& scale_factor);
+  virtual bool FinishPage();
+  virtual bool FinishDocument();
+
+  virtual uint32 GetDataSize() const;
+  virtual bool GetData(void* dst_buffer, uint32 dst_buffer_size) const;
+
+  virtual bool SaveTo(const FilePath& file_path) const;
+
+  virtual gfx::Rect GetPageBounds(unsigned int page_number) const;
+  virtual unsigned int GetPageCount() const;
+
+  virtual gfx::NativeDrawingContext context() const;
+
+#if defined(OS_WIN)
+  virtual bool Playback(gfx::NativeDrawingContext hdc, const RECT* rect) const;
+  virtual bool SafePlayback(gfx::NativeDrawingContext hdc) const;
+  virtual HENHMETAFILE emf() const;
+#endif  // if defined(OS_WIN)
+
+#if defined(OS_CHROMEOS)
+  virtual bool SaveToFD(const base::FileDescriptor& fd) const = 0;
+#endif  // if defined(OS_CHROMEOS)
+
+ protected:
+  PdfMetafileSkia();
+
+ private:
+  friend class NativeMetafileFactory;
+
+  scoped_ptr<PdfMetafileSkiaData> data_;
+
+  DISALLOW_COPY_AND_ASSIGN(PdfMetafileSkia);
+};
+
+}  // namespace printing
+
+#endif  // PRINTING_PDF_METAFILE_MAC_H_