Home | History | Annotate | Download | only in printing 
      1 // Copyright 2014 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 CHROME_BROWSER_PRINTING_PDF_TO_EMF_CONVERTER_H_
      6 #define CHROME_BROWSER_PRINTING_PDF_TO_EMF_CONVERTER_H_
      7 
      8 #include "base/callback.h"
      9 #include "base/memory/ref_counted_memory.h"
     10 #include "base/memory/scoped_ptr.h"
     11 
     12 namespace base {
     13 class FilePath;
     14 }
     15 
     16 namespace printing {
     17 
     18 class MetafilePlayer;
     19 class PdfRenderSettings;
     20 
     21 class PdfToEmfConverter {
     22  public:
     23   typedef base::Callback<void(int page_count)> StartCallback;
     24   typedef base::Callback<void(int page_number,
     25                               double scale_factor,
     26                               scoped_ptr<MetafilePlayer> emf)> GetPageCallback;
     27 
     28   virtual ~PdfToEmfConverter();
     29 
     30   static scoped_ptr<PdfToEmfConverter> CreateDefault();
     31 
     32   // Starts conversion of PDF provided as |data|. Calls |start_callback|
     33   // with positive |page_count|. |page_count| is 0 if initialization failed.
     34   virtual void Start(const scoped_refptr<base::RefCountedMemory>& data,
     35                      const PdfRenderSettings& conversion_settings,
     36                      const StartCallback& start_callback) = 0;
     37 
     38   // Requests conversion of the page. |page_number| is 0-base page number in
     39   // PDF provided in Start() call.
     40   // Calls |get_page_callback| after conversion. |emf| of callback in not NULL
     41   // if conversion succeeded.
     42   virtual void GetPage(int page_number,
     43                        const GetPageCallback& get_page_callback) = 0;
     44 };
     45 
     46 }  // namespace printing
     47 
     48 #endif  // CHROME_BROWSER_PRINTING_PDF_TO_EMF_CONVERTER_H_
     49