Synched with Xpdf 1.01

1 files changed, 138 insertions, 0 deletions

diff --git a/pdf/xpdf/Annot.cc b/pdf/xpdf/Annot.cc
new file mode 100644
index 0000000..b9c606f
--- /dev/null
+++ b/pdf/xpdf/Annot.cc
@@ -0,0 +1,138 @@
+//========================================================================
+//
+// Annot.cc
+//
+// Copyright 2000-2002 Glyph & Cog, LLC
+//
+//========================================================================
+
+#ifdef __GNUC__
+#pragma implementation
+#endif
+
+#include <aconf.h>
+#include "gmem.h"
+#include "Object.h"
+#include "Gfx.h"
+#include "Annot.h"
+
+//------------------------------------------------------------------------
+// Annot
+//------------------------------------------------------------------------
+
+Annot::Annot(XRef *xrefA, Dict *dict) {
+  Object apObj, asObj, obj1, obj2;
+  double t;
+
+  ok = gFalse;
+  xref = xrefA;
+
+  if (dict->lookup("AP", &apObj)->isDict()) {
+    if (dict->lookup("AS", &asObj)->isName()) {
+      if (apObj.dictLookup("N", &obj1)->isDict()) {
+	if (obj1.dictLookupNF(asObj.getName(), &obj2)->isRef()) {
+	  obj2.copy(&appearance);
+	  ok = gTrue;
+	}
+	obj2.free();
+      }
+      obj1.free();
+    } else {
+      if (apObj.dictLookupNF("N", &obj1)->isRef()) {
+	obj1.copy(&appearance);
+	ok = gTrue;
+      }
+      obj1.free();
+    }
+    asObj.free();
+  }
+  apObj.free();
+
+  if (dict->lookup("Rect", &obj1)->isArray() &&
+      obj1.arrayGetLength() == 4) {
+    //~ should check object types here
+    obj1.arrayGet(0, &obj2);
+    xMin = obj2.getNum();
+    obj2.free();
+    obj1.arrayGet(1, &obj2);
+    yMin = obj2.getNum();
+    obj2.free();
+    obj1.arrayGet(2, &obj2);
+    xMax = obj2.getNum();
+    obj2.free();
+    obj1.arrayGet(3, &obj2);
+    yMax = obj2.getNum();
+    obj2.free();
+    if (xMin > xMax) {
+      t = xMin; xMin = xMax; xMax = t;
+    }
+    if (yMin > yMax) {
+      t = yMin; yMin = yMax; yMax = t;
+    }
+  } else {
+    //~ this should return an error
+    xMin = yMin = 0;
+    xMax = yMax = 1;
+  }
+  obj1.free();
+}
+
+Annot::~Annot() {
+  appearance.free();
+}
+
+void Annot::draw(Gfx *gfx) {
+  Object obj;
+
+  if (appearance.fetch(xref, &obj)->isStream()) {
+    gfx->doAnnot(&obj, xMin, yMin, xMax, yMax);
+  }
+  obj.free();
+}
+
+//------------------------------------------------------------------------
+// Annots
+//------------------------------------------------------------------------
+
+Annots::Annots(XRef *xref, Object *annotsObj) {
+  Annot *annot;
+  Object obj1, obj2;
+  int size;
+  int i;
+
+  annots = NULL;
+  size = 0;
+  nAnnots = 0;
+
+  if (annotsObj->isArray()) {
+    for (i = 0; i < annotsObj->arrayGetLength(); ++i) {
+      if (annotsObj->arrayGet(i, &obj1)->isDict()) {
+	obj1.dictLookup("Subtype", &obj2);
+	if (obj2.isName("Widget") ||
+	    obj2.isName("Stamp")) {
+	  annot = new Annot(xref, obj1.getDict());
+	  if (annot->isOk()) {
+	    if (nAnnots >= size) {
+	      size += 16;
+	      annots = (Annot **)grealloc(annots, size * sizeof(Annot *));
+	    }
+	    annots[nAnnots++] = annot;
+	  } else {
+	    delete annot;
+	  }
+	}
+	obj2.free();
+      }
+      obj1.free();
+    }
+  }
+}
+
+Annots::~Annots() {
+  int i;
+
+  for (i = 0; i < nAnnots; ++i) {
+    delete annots[i];
+  }
+  gfree(annots);
+}