printing/pdf_metafile_skia.h

   1 // Copyright (c) 2011 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 namespace printing {
  19
  20 struct PdfMetafileSkiaData;
  21
  22 // This class uses Skia graphics library to generate a PDF document.
  23 class PRINTING_EXPORT PdfMetafileSkia : public Metafile {
  24  public:
  25   PdfMetafileSkia();
  26   virtual ~PdfMetafileSkia();
  27
  28   // Metafile methods.
  29   virtual bool Init() OVERRIDE;
  30   virtual bool InitFromData(const void* src_buffer,
  31                             uint32 src_buffer_size) OVERRIDE;
  32
  33   virtual SkDevice* StartPageForVectorCanvas(
  34       const gfx::Size& page_size,
  35       const gfx::Rect& content_area,
  36       const float& scale_factor) OVERRIDE;
  37
  38   virtual bool StartPage(const gfx::Size& page_size,
  39                          const gfx::Rect& content_area,
  40                          const float& scale_factor) OVERRIDE;
  41   virtual bool FinishPage() OVERRIDE;
  42   virtual bool FinishDocument() OVERRIDE;
  43
  44   virtual uint32 GetDataSize() const OVERRIDE;
  45   virtual bool GetData(void* dst_buffer, uint32 dst_buffer_size) const OVERRIDE;
  46
  47   virtual bool SaveTo(const FilePath& file_path) const OVERRIDE;
  48
  49   virtual gfx::Rect GetPageBounds(unsigned int page_number) const OVERRIDE;
  50   virtual unsigned int GetPageCount() const OVERRIDE;
  51
  52   virtual gfx::NativeDrawingContext context() const OVERRIDE;
  53
  54 #if defined(OS_WIN)
  55   virtual bool Playback(gfx::NativeDrawingContext hdc,
  56                         const RECT* rect) const OVERRIDE;
  57   virtual bool SafePlayback(gfx::NativeDrawingContext hdc) const OVERRIDE;
  58   virtual HENHMETAFILE emf() const OVERRIDE;
  59 #elif defined(OS_MACOSX)
  60   virtual bool RenderPage(unsigned int page_number,
  61                           CGContextRef context,
  62                           const CGRect rect,
  63                           bool shrink_to_fit,
  64                           bool stretch_to_fit,
  65                           bool center_horizontally,
  66                           bool center_vertically) const OVERRIDE;
  67 #endif
  68
  69 #if defined(OS_CHROMEOS)
  70   virtual bool SaveToFD(const base::FileDescriptor& fd) const OVERRIDE;
  71 #endif  // if defined(OS_CHROMEOS)
  72
  73   // Return a new metafile containing just the current page in draft mode.
  74   PdfMetafileSkia* GetMetafileForCurrentPage();
  75
  76  private:
  77   scoped_ptr<PdfMetafileSkiaData> data_;
  78
  79   // True when finish page is outstanding for current page.
  80   bool page_outstanding_;
  81
  82   DISALLOW_COPY_AND_ASSIGN(PdfMetafileSkia);
  83 };
  84
  85 }  // namespace printing
  86
  87 #endif  // PRINTING_PDF_METAFILE_SKIA_H_