From 98a1e3f36567639344f12932b629e526a8783aa8 Mon Sep 17 00:00:00 2001
From: sandman <sandman>
Date: Sat, 13 Apr 2002 00:47:20 +0000
Subject: CVS import of QPdf

---
(limited to 'noncore/unsupported/qpdf/xpdf/Page.cc')

diff --git a/noncore/unsupported/qpdf/xpdf/Page.cc b/noncore/unsupported/qpdf/xpdf/Page.cc
new file mode 100644
index 0000000..17c4481
--- a/dev/null
+++ b/noncore/unsupported/qpdf/xpdf/Page.cc
@@ -0,0 +1,267 @@
+//========================================================================
+//
+// Page.cc
+//
+// Copyright 1996 Derek B. Noonburg
+//
+//========================================================================
+
+#ifdef __GNUC__
+#pragma implementation
+#endif
+
+#include <aconf.h>
+#include <stddef.h>
+#include "Object.h"
+#include "Array.h"
+#include "Dict.h"
+#include "XRef.h"
+#include "Link.h"
+#include "OutputDev.h"
+#ifndef PDF_PARSER_ONLY
+#include "Gfx.h"
+#include "FormWidget.h"
+#endif
+#include "Error.h"
+#include "Page.h"
+
+//------------------------------------------------------------------------
+// PageAttrs
+//------------------------------------------------------------------------
+
+PageAttrs::PageAttrs(PageAttrs *attrs, Dict *dict) {
+  Object obj1;
+  fouble w, h;
+
+  // get old/default values
+  if (attrs) {
+    mediaBox = attrs->mediaBox;
+    cropBox = attrs->cropBox;
+    haveCropBox = attrs->haveCropBox;
+    rotate = attrs->rotate;
+    attrs->resources.copy(&resources);
+  } else {
+    // set default MediaBox to 8.5" x 11" -- this shouldn't be necessary
+    // but some (non-compliant) PDF files don't specify a MediaBox
+    mediaBox.x1 = 0;
+    mediaBox.y1 = 0;
+    mediaBox.x2 = 612;
+    mediaBox.y2 = 792;
+    cropBox.x1 = cropBox.y1 = cropBox.x2 = cropBox.y2 = 0;
+    haveCropBox = gFalse;
+    rotate = 0;
+    resources.initNull();
+  }
+
+  // media box
+  readBox(dict, "MediaBox", &mediaBox);
+
+  // crop box
+  cropBox = mediaBox;
+  haveCropBox = readBox(dict, "CropBox", &cropBox);
+
+  // if the MediaBox is excessively larger than the CropBox,
+  // just use the CropBox
+  limitToCropBox = gFalse;
+  if (haveCropBox) {
+    w = 0.25 * (cropBox.x2 - cropBox.x1);
+    h = 0.25 * (cropBox.y2 - cropBox.y1);
+    if ((cropBox.x1 - mediaBox.x1) + (mediaBox.x2 - cropBox.x2) > w ||
+	(cropBox.y1 - mediaBox.y1) + (mediaBox.y2 - cropBox.y2) > h) {
+      limitToCropBox = gTrue;
+    }
+  }
+
+  // other boxes
+  bleedBox = cropBox;
+  readBox(dict, "BleedBox", &bleedBox);
+  trimBox = cropBox;
+  readBox(dict, "TrimBox", &trimBox);
+  artBox = cropBox;
+  readBox(dict, "ArtBox", &artBox);
+
+  // rotate
+  dict->lookup("Rotate", &obj1);
+  if (obj1.isInt()) {
+    rotate = obj1.getInt();
+  }
+  obj1.free();
+  while (rotate < 0) {
+    rotate += 360;
+  }
+  while (rotate >= 360) {
+    rotate -= 360;
+  }
+
+  // resource dictionary
+  dict->lookup("Resources", &obj1);
+  if (obj1.isDict()) {
+    resources.free();
+    obj1.copy(&resources);
+  }
+  obj1.free();
+}
+
+PageAttrs::~PageAttrs() {
+  resources.free();
+}
+
+GBool PageAttrs::readBox(Dict *dict, char *key, PDFRectangle *box) {
+  PDFRectangle tmp;
+  Object obj1, obj2;
+  GBool ok;
+
+  dict->lookup(key, &obj1);
+  if (obj1.isArray() && obj1.arrayGetLength() == 4) {
+    ok = gTrue;
+    obj1.arrayGet(0, &obj2);
+    if (obj2.isNum()) {
+      tmp.x1 = obj2.getNum();
+    } else {
+      ok = gFalse;
+    }
+    obj2.free();
+    obj1.arrayGet(1, &obj2);
+    if (obj2.isNum()) {
+      tmp.y1 = obj2.getNum();
+    } else {
+      ok = gFalse;
+    }
+    obj2.free();
+    obj1.arrayGet(2, &obj2);
+    if (obj2.isNum()) {
+      tmp.x2 = obj2.getNum();
+    } else {
+      ok = gFalse;
+    }
+    obj2.free();
+    obj1.arrayGet(3, &obj2);
+    if (obj2.isNum()) {
+      tmp.y2 = obj2.getNum();
+    } else {
+      ok = gFalse;
+    }
+    obj2.free();
+    if (ok) {
+      *box = tmp;
+    }
+  } else {
+    ok = gFalse;
+  }
+  obj1.free();
+  return ok;
+}
+
+//------------------------------------------------------------------------
+// Page
+//------------------------------------------------------------------------
+
+Page::Page(XRef *xrefA, int numA, Dict *pageDict, PageAttrs *attrsA,
+	   GBool printCommandsA) {
+
+  ok = gTrue;
+  xref = xrefA;
+  num = numA;
+  printCommands = printCommandsA;
+
+  // get attributes
+  attrs = attrsA;
+
+  // annotations
+  pageDict->lookupNF("Annots", &annots);
+  if (!(annots.isRef() || annots.isArray() || annots.isNull())) {
+    error(-1, "Page annotations object (page %d) is wrong type (%s)",
+	  num, annots.getTypeName());
+    annots.free();
+    goto err2;
+  }
+
+  // contents
+  pageDict->lookupNF("Contents", &contents);
+  if (!(contents.isRef() || contents.isArray() ||
+	contents.isNull())) {
+    error(-1, "Page contents object (page %d) is wrong type (%s)",
+	  num, contents.getTypeName());
+    contents.free();
+    goto err1;
+  }
+
+  return;
+
+ err2:
+  annots.initNull();
+ err1:
+  contents.initNull();
+  ok = gFalse;
+}
+
+Page::~Page() {
+  delete attrs;
+  annots.free();
+  contents.free();
+}
+
+void Page::display(OutputDev *out, fouble dpi, int rotate,
+		   Links *links, Catalog *catalog) {
+#ifndef PDF_PARSER_ONLY
+  PDFRectangle *box, *cropBox;
+  Gfx *gfx;
+  Object obj;
+  Link *link;
+  int i;
+  FormWidgets *formWidgets;
+
+  box = getBox();
+  cropBox = getCropBox();
+
+  if (printCommands) {
+    printf("***** MediaBox = ll:%g,%g ur:%g,%g\n",
+	   box->x1, box->y1, box->x2, box->y2);
+    if (isCropped()) {
+      printf("***** CropBox = ll:%g,%g ur:%g,%g\n",
+	     cropBox->x1, cropBox->y1, cropBox->x2, cropBox->y2);
+    }
+    printf("***** Rotate = %d\n", attrs->getRotate());
+  }
+
+  rotate += getRotate();
+  if (rotate >= 360) {
+    rotate -= 360;
+  } else if (rotate < 0) {
+    rotate += 360;
+  }
+  gfx = new Gfx(xref, out, num, attrs->getResourceDict(),
+		dpi, box, isCropped(), cropBox, rotate, printCommands);
+  contents.fetch(xref, &obj);
+  if (!obj.isNull()) {
+    gfx->display(&obj);
+  }
+  obj.free();
+
+  // draw links
+  if (links) {
+    for (i = 0; i < links->getNumLinks(); ++i) {
+      link = links->getLink(i);
+      out->drawLink(link, catalog);
+    }
+    out->dump();
+  }
+
+  // draw AcroForm widgets
+  //~ need to reset CTM ???
+  formWidgets = new FormWidgets(xref, annots.fetch(xref, &obj));
+  obj.free();
+  if (printCommands && formWidgets->getNumWidgets() > 0) {
+    printf("***** AcroForm widgets\n");
+  }
+  for (i = 0; i < formWidgets->getNumWidgets(); ++i) {
+    formWidgets->getWidget(i)->draw(gfx);
+  }
+  if (formWidgets->getNumWidgets() > 0) {
+    out->dump();
+  }
+  delete formWidgets;
+
+  delete gfx;
+#endif
+}
--
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