printing/pdf_metafile_skia.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef PRINTING_PDF_METAFILE_SKIA_H_
   6 #define PRINTING_PDF_METAFILE_SKIA_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/logging.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "build/build_config.h"
  12 #include "printing/metafile.h"
  13
  14 #if defined(OS_WIN)
  15 #include <windows.h>
  16 #endif
  17
  18 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
  19 namespace base {
  20 struct FileDescriptor;
  21 }
  22 #endif
  23
  24 namespace printing {
  25
  26 struct PdfMetafileSkiaData;
  27
  28 // This class uses Skia graphics library to generate a PDF document.
  29 class PRINTING_EXPORT PdfMetafileSkia : public Metafile {
  30  public:
  31   PdfMetafileSkia();
  32   virtual ~PdfMetafileSkia();
  33
  34   // Metafile methods.
  35   virtual bool Init() OVERRIDE;
  36   virtual bool InitFromData(const void* src_buffer,
  37                             uint32 src_buffer_size) OVERRIDE;
  38
  39   virtual SkBaseDevice* StartPageForVectorCanvas(
  40       const gfx::Size& page_size,
  41       const gfx::Rect& content_area,
  42       const float& scale_factor) OVERRIDE;
  43
  44   virtual bool StartPage(const gfx::Size& page_size,
  45                          const gfx::Rect& content_area,
  46                          const float& scale_factor) OVERRIDE;
  47   virtual bool FinishPage() OVERRIDE;
  48   virtual bool FinishDocument() OVERRIDE;
  49
  50   virtual uint32 GetDataSize() const OVERRIDE;
  51   virtual bool GetData(void* dst_buffer, uint32 dst_buffer_size) const OVERRIDE;
  52
  53   virtual gfx::Rect GetPageBounds(unsigned int page_number) const OVERRIDE;
  54   virtual unsigned int GetPageCount() const OVERRIDE;
  55
  56   virtual gfx::NativeDrawingContext context() const OVERRIDE;
  57
  58 #if defined(OS_WIN)
  59   virtual bool Playback(gfx::NativeDrawingContext hdc,
  60                         const RECT* rect) const OVERRIDE;
  61   virtual bool SafePlayback(gfx::NativeDrawingContext hdc) const OVERRIDE;
  62 #elif defined(OS_MACOSX)
  63   virtual bool RenderPage(unsigned int page_number,
  64                           gfx::NativeDrawingContext context,
  65                           const CGRect rect,
  66                           const MacRenderPageParams& params) const OVERRIDE;
  67 #endif
  68
  69 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
  70   // TODO(vitalybuka): replace with SaveTo().
  71   bool SaveToFD(const base::FileDescriptor& fd) const;
  72 #endif  // if defined(OS_CHROMEOS) || defined(OS_ANDROID)
  73
  74   // Return a new metafile containing just the current page in draft mode.
  75   scoped_ptr<PdfMetafileSkia> GetMetafileForCurrentPage();
  76
  77  private:
  78   scoped_ptr<PdfMetafileSkiaData> data_;
  79
  80   // True when finish page is outstanding for current page.
  81   bool page_outstanding_;
  82
  83   DISALLOW_COPY_AND_ASSIGN(PdfMetafileSkia);
  84 };
  85
  86 }  // namespace printing
  87
  88 #endif  // PRINTING_PDF_METAFILE_SKIA_H_