--- /dev/null
+//========================================================================
+//
+// Annot.cc
+//
+// Copyright 2000-2003 Glyph & Cog, LLC
+//
+//========================================================================
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma implementation
+#endif
+
+#include <stdlib.h>
+#include "gmem.h"
+#include "Object.h"
+#include "Catalog.h"
+#include "Gfx.h"
+#include "Lexer.h"
+#include "Annot.h"
+
+//------------------------------------------------------------------------
+// Annot
+//------------------------------------------------------------------------
+
+Annot::Annot(XRef *xrefA, Dict *acroForm, Dict *dict) {
+ Object apObj, asObj, obj1, obj2;
+ GBool regen, isTextField;
+ double t;
+
+ ok = gFalse;
+ xref = xrefA;
+ appearBuf = NULL;
+
+ 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();
+
+ // check if field apperances need to be regenerated
+ regen = gFalse;
+ if (acroForm) {
+ acroForm->lookup("NeedAppearances", &obj1);
+ if (obj1.isBool() && obj1.getBool()) {
+ regen = gTrue;
+ }
+ obj1.free();
+ }
+
+ // check for a text-type field
+ isTextField = dict->lookup("FT", &obj1)->isName("Tx");
+ obj1.free();
+
+#if 0 //~ appearance stream generation is not finished yet
+ if (regen && isTextField) {
+ generateAppearance(acroForm, dict);
+ } else {
+#endif
+ 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;
+ } else {
+ obj2.free();
+ if (obj1.dictLookupNF("Off", &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 0 //~ appearance stream generation is not finished yet
+ }
+#endif
+}
+
+Annot::~Annot() {
+ appearance.free();
+ if (appearBuf) {
+ delete appearBuf;
+ }
+}
+
+void Annot::generateAppearance(Dict *acroForm, Dict *dict) {
+ MemStream *appearStream;
+ Object daObj, vObj, drObj, appearDict, obj1, obj2;
+ GString *daStr, *daStr1, *vStr, *s;
+ char buf[256];
+ double fontSize;
+ int c;
+ int i0, i1;
+
+ //~ DA can be inherited
+ if (dict->lookup("DA", &daObj)->isString()) {
+ daStr = daObj.getString();
+
+ // look for a font size
+ //~ may want to parse the DS entry in place of this (if it exists)
+ daStr1 = NULL;
+ fontSize = 10;
+ for (i1 = daStr->getLength() - 2; i1 >= 0; --i1) {
+ if (daStr->getChar(i1) == 'T' && daStr->getChar(i1+1) == 'f') {
+ for (--i1; i1 >= 0 && Lexer::isSpace(daStr->getChar(i1)); --i1) ;
+ for (i0 = i1; i0 >= 0 && !Lexer::isSpace(daStr->getChar(i0)); --i0) ;
+ if (i0 >= 0) {
+ ++i0;
+ ++i1;
+ s = new GString(daStr, i0, i1 - i0);
+ fontSize = atof(s->getCString());
+ delete s;
+
+ // autosize the font
+ if (fontSize == 0) {
+ fontSize = 0.67 * (yMax - yMin);
+ daStr1 = new GString(daStr, 0, i0);
+ sprintf(buf, "%.2f", fontSize);
+ daStr1->append(buf);
+ daStr1->append(daStr->getCString() + i1,
+ daStr->getLength() - i1);
+ }
+ }
+ break;
+ }
+ }
+
+ // build the appearance stream contents
+ appearBuf = new GString();
+ appearBuf->append("/Tx BMC\n");
+ appearBuf->append("q BT\n");
+ appearBuf->append(daStr1 ? daStr1 : daStr)->append("\n");
+ if (dict->lookup("V", &vObj)->isString()) {
+ //~ handle quadding -- this requires finding the font and using
+ //~ the encoding and char widths
+ sprintf(buf, "1 0 0 1 %.2f %.2f Tm\n", 2.0, yMax - yMin - fontSize);
+ appearBuf->append(buf);
+ sprintf(buf, "%g TL\n", fontSize);
+ appearBuf->append(buf);
+ vStr = vObj.getString();
+ i0 = 0;
+ while (i0 < vStr->getLength()) {
+ for (i1 = i0;
+ i1 < vStr->getLength() &&
+ vStr->getChar(i1) != '\n' && vStr->getChar(i1) != '\r';
+ ++i1) ;
+ if (i0 > 0) {
+ appearBuf->append("T*\n");
+ }
+ appearBuf->append('(');
+ for (; i0 < i1; ++i0) {
+ c = vStr->getChar(i0);
+ if (c == '(' || c == ')' || c == '\\') {
+ appearBuf->append('\\');
+ appearBuf->append(c);
+ } else if (c < 0x20 || c >= 0x80) {
+ sprintf(buf, "\\%03o", c);
+ appearBuf->append(buf);
+ } else {
+ appearBuf->append(c);
+ }
+ }
+ appearBuf->append(") Tj\n");
+ if (i1 + 1 < vStr->getLength() &&
+ vStr->getChar(i1) == '\r' && vStr->getChar(i1 + 1) == '\n') {
+ i0 = i1 + 2;
+ } else {
+ i0 = i1 + 1;
+ }
+ }
+ }
+ vObj.free();
+ appearBuf->append("ET Q\n");
+ appearBuf->append("EMC\n");
+
+ // build the appearance stream dictionary
+ appearDict.initDict(xref);
+ appearDict.dictAdd(copyString("Length"),
+ obj1.initInt(appearBuf->getLength()));
+ appearDict.dictAdd(copyString("Subtype"), obj1.initName("Form"));
+ obj1.initArray(xref);
+ obj1.arrayAdd(obj2.initReal(0));
+ obj1.arrayAdd(obj2.initReal(0));
+ obj1.arrayAdd(obj2.initReal(xMax - xMin));
+ obj1.arrayAdd(obj2.initReal(yMax - yMin));
+ appearDict.dictAdd(copyString("BBox"), &obj1);
+
+ // find the resource dictionary
+ dict->lookup("DR", &drObj);
+ if (!drObj.isDict()) {
+ dict->lookup("Parent", &obj1);
+ while (obj1.isDict()) {
+ drObj.free();
+ obj1.dictLookup("DR", &drObj);
+ if (drObj.isDict()) {
+ break;
+ }
+ obj1.dictLookup("Parent", &obj2);
+ obj1.free();
+ obj1 = obj2;
+ }
+ obj1.free();
+ if (!drObj.isDict()) {
+ if (acroForm) {
+ drObj.free();
+ acroForm->lookup("DR", &drObj);
+ }
+ }
+ }
+ if (drObj.isDict()) {
+ appearDict.dictAdd(copyString("Resources"), drObj.copy(&obj1));
+ }
+ drObj.free();
+
+ // build the appearance stream
+ appearStream = new MemStream(appearBuf->getCString(), 0,
+ appearBuf->getLength(), &appearDict);
+ appearance.initStream(appearStream);
+ ok = gTrue;
+
+ if (daStr1) {
+ delete daStr1;
+ }
+ }
+ daObj.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, Catalog *catalog, Object *annotsObj) {
+ Dict *acroForm;
+ Annot *annot;
+ Object obj1;
+ int size;
+ int i;
+
+ annots = NULL;
+ size = 0;
+ nAnnots = 0;
+
+ acroForm = catalog->getAcroForm()->isDict() ?
+ catalog->getAcroForm()->getDict() : NULL;
+ if (annotsObj->isArray()) {
+ for (i = 0; i < annotsObj->arrayGetLength(); ++i) {
+ if (annotsObj->arrayGet(i, &obj1)->isDict()) {
+ annot = new Annot(xref, acroForm, obj1.getDict());
+ if (annot->isOk()) {
+ if (nAnnots >= size) {
+ size += 16;
+ annots = (Annot **)greallocn(annots, size, sizeof(Annot *));
+ }
+ annots[nAnnots++] = annot;
+ } else {
+ delete annot;
+ }
+ }
+ obj1.free();
+ }
+ }
+}
+
+Annots::~Annots() {
+ int i;
+
+ for (i = 0; i < nAnnots; ++i) {
+ delete annots[i];
+ }
+ gfree(annots);
+}
git.asbjorn.biz / swftools.git / blobdiff