headers/libs/print/libprint/PrintJobReader.h

   1 /*
   2
   3 PrintJobReader
   4
   5 Copyright (c) 2002 OpenBeOS.
   6
   7 Author:
   8         Michael Pfeiffer
   9
  10 Permission is hereby granted, free of charge, to any person obtaining a copy of
  11 this software and associated documentation files (the "Software"), to deal in
  12 the Software without restriction, including without limitation the rights to
  13 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  14 of the Software, and to permit persons to whom the Software is furnished to do
  15 so, subject to the following conditions:
  16
  17 The above copyright notice and this permission notice shall be included in all
  18 copies or substantial portions of the Software.
  19
  20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  26 THE SOFTWARE.
  27
  28 */
  29
  30 #ifndef _PRINT_JOB_READER_H
  31 #define _PRINT_JOB_READER_H
  32
  33 #include <File.h>
  34 #include <Message.h>
  35 #include <Picture.h>
  36
  37 class PrintJobPage {
  38 public:
  39                                         PrintJobPage();
  40                                         PrintJobPage(const PrintJobPage& copy);
  41                                         PrintJobPage(BFile* jobFile, off_t start);
  42
  43         status_t                InitCheck() const;
  44
  45         int32                   NumberOfPictures() const { return fNumberOfPictures; }
  46
  47         status_t                NextPicture(BPicture& picture, BPoint& p, BRect& r);
  48
  49         PrintJobPage& operator=(const PrintJobPage& copy);
  50
  51 private:
  52         BFile           fJobFile;                       // the job file
  53         off_t           fNextPicture;           // offset to first picture
  54         int32           fNumberOfPictures;      // of this page
  55         int32           fPicture;                       // the picture returned by NextPicture()
  56         status_t        fStatus;
  57 };
  58
  59
  60 class PrintJobReader {
  61 public:
  62                                         PrintJobReader(BFile* jobFile);
  63         virtual                 ~PrintJobReader();
  64
  65                         // test after construction if this is a valid job file
  66                         status_t        InitCheck() const;
  67
  68                         // accessors to informations from job file
  69                         int32           NumberOfPages() const { return fNumberOfPages; }
  70                         int32           FirstPage() const;
  71                         int32           LastPage() const;
  72                         const BMessage* JobSettings() const { return &fJobSettings; }
  73                         BRect           PaperRect() const;
  74                         BRect           PrintableRect() const;
  75                         void            GetResolution(int32* xdpi, int32* ydpi) const;
  76                         float           GetScale() const;
  77
  78                         // retrieve page
  79                         status_t        GetPage(int32 no, PrintJobPage& pjp);
  80
  81 private:
  82                         void            _BuildPageIndex();
  83
  84         BFile           fJobFile;               // the job file
  85         int32           fNumberOfPages; // the number of pages in the job file
  86         BMessage        fJobSettings;   // the settings extracted from the job file
  87         off_t*          fPageIndex;             // start positions of pages in the job file
  88
  89 };
  90
  91 #endif
  92