apdf/xpdf/Outline2.cc

   1 //========================================================================
   2 //
   3 // Outline2.cc
   4 //
   5 // Copyright 1999-2005 Emmanuel Lesueur
   6 //
   7 //========================================================================
   8
   9 #ifdef __GNUC__
  10 #pragma implementation
  11 #endif
  12
  13 #include <stddef.h>
  14 #include "gmem.h"
  15 #include "Object.h"
  16 #include "Dict.h"
  17 #include "Error.h"
  18 #include "Action.h"
  19 #include "Outline2.h"
  20
  21 //------------------------------------------------------------------------
  22 // Outline
  23 //------------------------------------------------------------------------
  24
  25 Outline::~Outline() {
  26   delete action;
  27   delete children;
  28 }
  29
  30 //------------------------------------------------------------------------
  31 // OutlineTree
  32 //------------------------------------------------------------------------
  33
  34 OutlineTree::~OutlineTree() {
  35   if (beg) {
  36     Outline **p = cur;
  37     while (p != beg)
  38       delete *--p;
  39     gfree(beg);
  40   }
  41 }
  42
  43 void OutlineTree::addChild(Outline *outline) {
  44   DEBUG_INFO
  45   if (cur == end) {
  46     int sz = cur - beg;
  47     beg = (Outline **)greallocn(beg, sz + 16, sizeof(*beg));
  48     cur = beg + sz;
  49     end = beg + sz + 16;
  50   }
  51   *cur++ = outline;
  52 }
  53
  54 OutlineTree *OutlineTree::read(Object *root) {
  55   DEBUG_INFO
  56   Object outline;
  57   OutlineTree *tree = NULL;
  58   if (root->dictLookup("First", &outline)->isDict()) {
  59     Object obj;
  60     GBool opened = gFalse;
  61
  62     if (root->dictLookup("Count", &obj)->isInt() && obj.getInt() > 0)
  63       opened = gTrue;
  64     obj.free();
  65     tree = new OutlineTree(opened);
  66
  67     while (gTrue) {
  68       Action *action = NULL;
  69       if (!outline.dictLookup("Dest", &obj)->isNull())
  70         action = new ActionGoTo(new Destination(&obj));
  71       else {
  72         obj.free();
  73         if (outline.dictLookup("A", &obj)->isDict())
  74           action = Action::makeAction(&obj);
  75       }
  76       obj.free();
  77       outline.dictLookup("Title", &obj);
  78       if (obj.isString()) {
  79         tree->addChild(new Outline(obj.getString(), action, read(&outline)));
  80       } else {
  81         error(-1, "Bad outline title.");
  82         delete action;
  83       }
  84       obj.free();
  85       outline.dictLookup("Next", &obj);
  86       outline.free();
  87       if(obj.isDict()) {
  88         outline = obj;
  89         obj.clear();
  90       } else {
  91         obj.free();
  92         break;
  93       }
  94     }
  95   }
  96   outline.free();
  97   return tree;
  98 }
  99