pdftops/Page.h

   1 //========================================================================
   2 //
   3 // Page.h
   4 //
   5 // Copyright 1996 Derek B. Noonburg
   6 //
   7 //========================================================================
   8
   9 #ifndef PAGE_H
  10 #define PAGE_H
  11
  12 #ifdef __GNUC__
  13 #pragma interface
  14 #endif
  15
  16 #include "Object.h"
  17
  18 class Dict;
  19 class XRef;
  20 class OutputDev;
  21 class Links;
  22 class Catalog;
  23
  24 //------------------------------------------------------------------------
  25 // PageAttrs
  26 //------------------------------------------------------------------------
  27
  28 class PageAttrs {
  29 public:
  30
  31   // Construct a new PageAttrs object by merging a dictionary
  32   // (of type Pages or Page) into another PageAttrs object.  If
  33   // <attrs> is NULL, uses defaults.
  34   PageAttrs(PageAttrs *attrs, Dict *dict);
  35
  36   // Destructor.
  37   ~PageAttrs();
  38
  39   // Accessors.
  40   double getX1() { return limitToCropBox ? cropX1 : x1; }
  41   double getY1() { return limitToCropBox ? cropY1 : y1; }
  42   double getX2() { return limitToCropBox ? cropX2 : x2; }
  43   double getY2() { return limitToCropBox ? cropY2 : y2; }
  44   GBool isCropped() { return cropX2 > cropX1; }
  45   double getCropX1() { return cropX1; }
  46   double getCropY1() { return cropY1; }
  47   double getCropX2() { return cropX2; }
  48   double getCropY2() { return cropY2; }
  49   int getRotate() { return rotate; }
  50   Dict *getResourceDict()
  51     { return resources.isDict() ? resources.getDict() : (Dict *)NULL; }
  52
  53 private:
  54
  55   double x1, y1, x2, y2;
  56   double cropX1, cropY1, cropX2, cropY2;
  57   GBool limitToCropBox;
  58   int rotate;
  59   Object resources;
  60 };
  61
  62 //------------------------------------------------------------------------
  63 // Page
  64 //------------------------------------------------------------------------
  65
  66 class Page {
  67 public:
  68
  69   // Constructor.
  70   Page(int num1, Dict *pageDict, PageAttrs *attrs1);
  71
  72   // Destructor.
  73   ~Page();
  74
  75   // Is page valid?
  76   GBool isOk() { return ok; }
  77
  78   // Get page parameters.
  79   double getX1() { return attrs->getX1(); }
  80   double getY1() { return attrs->getY1(); }
  81   double getX2() { return attrs->getX2(); }
  82   double getY2() { return attrs->getY2(); }
  83   GBool isCropped() { return attrs->isCropped(); }
  84   double getCropX1() { return attrs->getCropX1(); }
  85   double getCropY1() { return attrs->getCropY1(); }
  86   double getCropX2() { return attrs->getCropX2(); }
  87   double getCropY2() { return attrs->getCropY2(); }
  88   double getWidth() { return attrs->getX2() - attrs->getX1(); }
  89   double getHeight() { return attrs->getY2() - attrs->getY1(); }
  90   int getRotate() { return attrs->getRotate(); }
  91
  92   // Get resource dictionary.
  93   Dict *getResourceDict() { return attrs->getResourceDict(); }
  94
  95   // Get annotations array.
  96   Object *getAnnots(Object *obj) { return annots.fetch(obj); }
  97
  98   // Get contents.
  99   Object *getContents(Object *obj) { return contents.fetch(obj); }
 100
 101   // Display a page.
 102   void display(OutputDev *out, double dpi, int rotate,
 103                Links *links, Catalog *catalog);
 104
 105 private:
 106
 107   int num;                      // page number
 108   PageAttrs *attrs;             // page attributes
 109   Object annots;                // annotations array
 110   Object contents;              // page contents
 111   GBool ok;                     // true if page is valid
 112 };
 113
 114 #endif