| //======================================================================== |
| // |
| // Link.cc |
| // |
| // Copyright 1996-2003 Glyph & Cog, LLC |
| // |
| //======================================================================== |
| |
| //======================================================================== |
| // |
| // Modified under the Poppler project - http://poppler.freedesktop.org |
| // |
| // All changes made under the Poppler project to this file are licensed |
| // under GPL version 2 or later |
| // |
| // Copyright (C) 2006, 2008 Pino Toscano <pino@kde.org> |
| // Copyright (C) 2007, 2010, 2011 Carlos Garcia Campos <carlosgc@gnome.org> |
| // Copyright (C) 2008 Hugo Mercier <hmercier31@gmail.com> |
| // Copyright (C) 2008-2010, 2012-2014, 2016-2024 Albert Astals Cid <aacid@kde.org> |
| // Copyright (C) 2009 Kovid Goyal <kovid@kovidgoyal.net> |
| // Copyright (C) 2009 Ilya Gorenbein <igorenbein@finjan.com> |
| // Copyright (C) 2012 Tobias Koening <tobias.koenig@kdab.com> |
| // Copyright (C) 2018 Klarälvdalens Datakonsult AB, a KDAB Group company, <info@kdab.com>. Work sponsored by the LiMux project of the city of Munich |
| // Copyright (C) 2018 Intevation GmbH <intevation@intevation.de> |
| // Copyright (C) 2018, 2020 Adam Reichold <adam.reichold@t-online.de> |
| // Copyright (C) 2019, 2020 Oliver Sander <oliver.sander@tu-dresden.de> |
| // Copyright (C) 2020 Marek Kasik <mkasik@redhat.com> |
| // Copyright (C) 2024 Pratham Gandhi <ppg.1382@gmail.com> |
| // |
| // To see a description of the changes please see the Changelog file that |
| // came with your tarball or type make ChangeLog if you are building from git |
| // |
| //======================================================================== |
| |
| #include <config.h> |
| |
| #include <cstddef> |
| #include <cstring> |
| #include "goo/gmem.h" |
| #include "goo/GooString.h" |
| #include "Error.h" |
| #include "Object.h" |
| #include "Array.h" |
| #include "Dict.h" |
| #include "Link.h" |
| #include "Sound.h" |
| #include "FileSpec.h" |
| #include "Rendition.h" |
| #include "Annot.h" |
| |
| //------------------------------------------------------------------------ |
| // LinkAction |
| //------------------------------------------------------------------------ |
| LinkAction::LinkAction() = default; |
| |
| LinkAction::~LinkAction() = default; |
| |
| std::unique_ptr<LinkAction> LinkAction::parseDest(const Object *obj) |
| { |
| auto action = std::unique_ptr<LinkAction>(new LinkGoTo(obj)); |
| if (!action->isOk()) { |
| action.reset(); |
| } |
| return action; |
| } |
| |
| std::unique_ptr<LinkAction> LinkAction::parseAction(const Object *obj, const std::optional<std::string> &baseURI) |
| { |
| std::set<int> seenNextActions; |
| return parseAction(obj, baseURI, &seenNextActions); |
| } |
| |
| std::unique_ptr<LinkAction> LinkAction::parseAction(const Object *obj, const std::optional<std::string> &baseURI, std::set<int> *seenNextActions) |
| { |
| |
| if (!obj->isDict()) { |
| error(errSyntaxWarning, -1, "parseAction: Bad annotation action for URI '{0:s}'", baseURI ? baseURI->c_str() : "NULL"); |
| return nullptr; |
| } |
| |
| std::unique_ptr<LinkAction> action; |
| Object obj2 = obj->dictLookup("S"); |
| |
| // GoTo action |
| if (obj2.isName("GoTo")) { |
| Object obj3 = obj->dictLookup("D"); |
| action = std::make_unique<LinkGoTo>(&obj3); |
| |
| // GoToR action |
| } else if (obj2.isName("GoToR")) { |
| Object obj3 = obj->dictLookup("F"); |
| Object obj4 = obj->dictLookup("D"); |
| action = std::make_unique<LinkGoToR>(&obj3, &obj4); |
| |
| // Launch action |
| } else if (obj2.isName("Launch")) { |
| action = std::make_unique<LinkLaunch>(obj); |
| |
| // URI action |
| } else if (obj2.isName("URI")) { |
| Object obj3 = obj->dictLookup("URI"); |
| action = std::make_unique<LinkURI>(&obj3, baseURI); |
| |
| // Named action |
| } else if (obj2.isName("Named")) { |
| Object obj3 = obj->dictLookup("N"); |
| action = std::make_unique<LinkNamed>(&obj3); |
| |
| // Movie action |
| } else if (obj2.isName("Movie")) { |
| action = std::make_unique<LinkMovie>(obj); |
| |
| // Rendition action |
| } else if (obj2.isName("Rendition")) { |
| action = std::make_unique<LinkRendition>(obj); |
| |
| // Sound action |
| } else if (obj2.isName("Sound")) { |
| action = std::make_unique<LinkSound>(obj); |
| |
| // JavaScript action |
| } else if (obj2.isName("JavaScript")) { |
| Object obj3 = obj->dictLookup("JS"); |
| action = std::make_unique<LinkJavaScript>(&obj3); |
| |
| // Set-OCG-State action |
| } else if (obj2.isName("SetOCGState")) { |
| action = std::make_unique<LinkOCGState>(obj); |
| |
| // Hide action |
| } else if (obj2.isName("Hide")) { |
| action = std::make_unique<LinkHide>(obj); |
| |
| // ResetForm action |
| } else if (obj2.isName("ResetForm")) { |
| action = std::make_unique<LinkResetForm>(obj); |
| |
| // SubmitForm action |
| } else if (obj2.isName("SubmitForm")) { |
| action = std::make_unique<LinkSubmitForm>(obj); |
| |
| // unknown action |
| } else if (obj2.isName()) { |
| action = std::make_unique<LinkUnknown>(obj2.getName()); |
| |
| // action is missing or wrong type |
| } else { |
| error(errSyntaxWarning, -1, "parseAction: Unknown annotation action object: URI = '{0:s}'", baseURI ? baseURI->c_str() : "NULL"); |
| action = nullptr; |
| } |
| |
| if (action && !action->isOk()) { |
| action.reset(); |
| return nullptr; |
| } |
| |
| if (!action) { |
| return nullptr; |
| } |
| |
| // parse the next actions |
| const Object nextObj = obj->dictLookup("Next"); |
| std::vector<std::unique_ptr<LinkAction>> actionList; |
| if (nextObj.isDict()) { |
| |
| // Prevent circles in the tree by checking the ref against used refs in |
| // our current tree branch. |
| const Object &nextRefObj = obj->dictLookupNF("Next"); |
| if (nextRefObj.isRef()) { |
| const Ref ref = nextRefObj.getRef(); |
| if (!seenNextActions->insert(ref.num).second) { |
| error(errSyntaxWarning, -1, "parseAction: Circular next actions detected."); |
| return action; |
| } |
| } |
| |
| actionList.reserve(1); |
| actionList.push_back(parseAction(&nextObj, {}, seenNextActions)); |
| } else if (nextObj.isArray()) { |
| const Array *a = nextObj.getArray(); |
| const int n = a->getLength(); |
| actionList.reserve(n); |
| for (int i = 0; i < n; ++i) { |
| const Object obj3 = a->get(i); |
| if (!obj3.isDict()) { |
| error(errSyntaxWarning, -1, "parseAction: Next array does not contain only dicts"); |
| continue; |
| } |
| |
| // Similar circle check as above. |
| const Object &obj3Ref = a->getNF(i); |
| if (obj3Ref.isRef()) { |
| const Ref ref = obj3Ref.getRef(); |
| if (!seenNextActions->insert(ref.num).second) { |
| error(errSyntaxWarning, -1, "parseAction: Circular next actions detected in array."); |
| return action; |
| } |
| } |
| |
| actionList.push_back(parseAction(&obj3, {}, seenNextActions)); |
| } |
| } |
| |
| action->nextActionList = std::move(actionList); |
| |
| return action; |
| } |
| |
| const std::vector<std::unique_ptr<LinkAction>> &LinkAction::nextActions() const |
| { |
| return nextActionList; |
| } |
| |
| //------------------------------------------------------------------------ |
| // LinkDest |
| //------------------------------------------------------------------------ |
| |
| LinkDest::LinkDest(const Array *a) |
| { |
| // initialize fields |
| left = bottom = right = top = zoom = 0; |
| changeLeft = changeTop = changeZoom = false; |
| ok = false; |
| |
| // get page |
| if (a->getLength() < 2) { |
| error(errSyntaxWarning, -1, "Annotation destination array is too short"); |
| return; |
| } |
| const Object &obj0 = a->getNF(0); |
| if (obj0.isInt()) { |
| pageNum = obj0.getInt() + 1; |
| pageIsRef = false; |
| } else if (obj0.isRef()) { |
| pageRef = obj0.getRef(); |
| pageIsRef = true; |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination"); |
| return; |
| } |
| |
| // get destination type |
| Object obj1 = a->get(1); |
| |
| // XYZ link |
| if (obj1.isName("XYZ")) { |
| kind = destXYZ; |
| if (a->getLength() < 3) { |
| changeLeft = false; |
| } else { |
| Object obj2 = a->get(2); |
| if (obj2.isNull()) { |
| changeLeft = false; |
| } else if (obj2.isNum()) { |
| changeLeft = true; |
| left = obj2.getNum(); |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination position"); |
| return; |
| } |
| } |
| if (a->getLength() < 4) { |
| changeTop = false; |
| } else { |
| Object obj2 = a->get(3); |
| if (obj2.isNull()) { |
| changeTop = false; |
| } else if (obj2.isNum()) { |
| changeTop = true; |
| top = obj2.getNum(); |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination position"); |
| return; |
| } |
| } |
| if (a->getLength() < 5) { |
| changeZoom = false; |
| } else { |
| Object obj2 = a->get(4); |
| if (obj2.isNull()) { |
| changeZoom = false; |
| } else if (obj2.isNum()) { |
| zoom = obj2.getNum(); |
| changeZoom = (zoom == 0) ? false : true; |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination position"); |
| return; |
| } |
| } |
| |
| // Fit link |
| } else if (obj1.isName("Fit")) { |
| kind = destFit; |
| |
| // FitH link |
| } else if (obj1.isName("FitH")) { |
| kind = destFitH; |
| if (a->getLength() < 3) { |
| changeTop = false; |
| } else { |
| Object obj2 = a->get(2); |
| if (obj2.isNull()) { |
| changeTop = false; |
| } else if (obj2.isNum()) { |
| changeTop = true; |
| top = obj2.getNum(); |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination position"); |
| kind = destFit; |
| } |
| } |
| |
| // FitV link |
| } else if (obj1.isName("FitV")) { |
| if (a->getLength() < 3) { |
| error(errSyntaxWarning, -1, "Annotation destination array is too short"); |
| return; |
| } |
| kind = destFitV; |
| Object obj2 = a->get(2); |
| if (obj2.isNull()) { |
| changeLeft = false; |
| } else if (obj2.isNum()) { |
| changeLeft = true; |
| left = obj2.getNum(); |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination position"); |
| kind = destFit; |
| } |
| |
| // FitR link |
| } else if (obj1.isName("FitR")) { |
| if (a->getLength() < 6) { |
| error(errSyntaxWarning, -1, "Annotation destination array is too short"); |
| return; |
| } |
| kind = destFitR; |
| Object obj2 = a->get(2); |
| if (obj2.isNum()) { |
| left = obj2.getNum(); |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination position"); |
| kind = destFit; |
| } |
| obj2 = a->get(3); |
| if (obj2.isNum()) { |
| bottom = obj2.getNum(); |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination position"); |
| kind = destFit; |
| } |
| obj2 = a->get(4); |
| if (obj2.isNum()) { |
| right = obj2.getNum(); |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination position"); |
| kind = destFit; |
| } |
| obj2 = a->get(5); |
| if (obj2.isNum()) { |
| top = obj2.getNum(); |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination position"); |
| kind = destFit; |
| } |
| |
| // FitB link |
| } else if (obj1.isName("FitB")) { |
| kind = destFitB; |
| |
| // FitBH link |
| } else if (obj1.isName("FitBH")) { |
| if (a->getLength() < 3) { |
| error(errSyntaxWarning, -1, "Annotation destination array is too short"); |
| return; |
| } |
| kind = destFitBH; |
| Object obj2 = a->get(2); |
| if (obj2.isNull()) { |
| changeTop = false; |
| } else if (obj2.isNum()) { |
| changeTop = true; |
| top = obj2.getNum(); |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination position"); |
| kind = destFit; |
| } |
| |
| // FitBV link |
| } else if (obj1.isName("FitBV")) { |
| if (a->getLength() < 3) { |
| error(errSyntaxWarning, -1, "Annotation destination array is too short"); |
| return; |
| } |
| kind = destFitBV; |
| Object obj2 = a->get(2); |
| if (obj2.isNull()) { |
| changeLeft = false; |
| } else if (obj2.isNum()) { |
| changeLeft = true; |
| left = obj2.getNum(); |
| } else { |
| error(errSyntaxWarning, -1, "Bad annotation destination position"); |
| kind = destFit; |
| } |
| |
| // unknown link kind |
| } else { |
| error(errSyntaxWarning, -1, "Unknown annotation destination type"); |
| return; |
| } |
| |
| ok = true; |
| } |
| |
| //------------------------------------------------------------------------ |
| // LinkGoTo |
| //------------------------------------------------------------------------ |
| |
| LinkGoTo::LinkGoTo(const Object *destObj) |
| { |
| // named destination |
| if (destObj->isName()) { |
| namedDest = std::make_unique<GooString>(destObj->getName()); |
| } else if (destObj->isString()) { |
| namedDest = destObj->getString()->copy(); |
| |
| // destination dictionary |
| } else if (destObj->isArray()) { |
| dest = std::make_unique<LinkDest>(destObj->getArray()); |
| if (!dest->isOk()) { |
| dest.reset(); |
| } |
| |
| // error |
| } else { |
| error(errSyntaxWarning, -1, "Illegal annotation destination"); |
| } |
| } |
| |
| LinkGoTo::~LinkGoTo() = default; |
| |
| //------------------------------------------------------------------------ |
| // LinkGoToR |
| //------------------------------------------------------------------------ |
| |
| LinkGoToR::LinkGoToR(Object *fileSpecObj, Object *destObj) |
| { |
| // get file name |
| Object obj1 = getFileSpecNameForPlatform(fileSpecObj); |
| if (obj1.isString()) { |
| fileName = obj1.getString()->copy(); |
| } |
| |
| // named destination |
| if (destObj->isName()) { |
| namedDest = std::make_unique<GooString>(destObj->getName()); |
| } else if (destObj->isString()) { |
| namedDest = destObj->getString()->copy(); |
| |
| // destination dictionary |
| } else if (destObj->isArray()) { |
| dest = std::make_unique<LinkDest>(destObj->getArray()); |
| if (!dest->isOk()) { |
| dest.reset(); |
| } |
| |
| // error |
| } else { |
| error(errSyntaxWarning, -1, "Illegal annotation destination"); |
| } |
| } |
| |
| LinkGoToR::~LinkGoToR() = default; |
| |
| //------------------------------------------------------------------------ |
| // LinkLaunch |
| //------------------------------------------------------------------------ |
| |
| LinkLaunch::LinkLaunch(const Object *actionObj) |
| { |
| |
| if (actionObj->isDict()) { |
| Object obj1 = actionObj->dictLookup("F"); |
| if (!obj1.isNull()) { |
| Object obj3 = getFileSpecNameForPlatform(&obj1); |
| if (obj3.isString()) { |
| fileName = obj3.getString()->copy(); |
| } |
| } else { |
| #ifdef _WIN32 |
| obj1 = actionObj->dictLookup("Win"); |
| #else |
| //~ This hasn't been defined by Adobe yet, so assume it looks |
| //~ just like the Win dictionary until they say otherwise. |
| obj1 = actionObj->dictLookup("Unix"); |
| #endif |
| if (obj1.isDict()) { |
| Object obj2 = obj1.dictLookup("F"); |
| Object obj3 = getFileSpecNameForPlatform(&obj2); |
| if (obj3.isString()) { |
| fileName = obj3.getString()->copy(); |
| } |
| obj2 = obj1.dictLookup("P"); |
| if (obj2.isString()) { |
| params = obj2.getString()->copy(); |
| } |
| } else { |
| error(errSyntaxWarning, -1, "Bad launch-type link action"); |
| } |
| } |
| } |
| } |
| |
| LinkLaunch::~LinkLaunch() = default; |
| |
| //------------------------------------------------------------------------ |
| // LinkURI |
| //------------------------------------------------------------------------ |
| |
| LinkURI::LinkURI(const Object *uriObj, const std::optional<std::string> &baseURI) |
| { |
| hasURIFlag = false; |
| if (uriObj->isString()) { |
| hasURIFlag = true; |
| const std::string &uri2 = uriObj->getString()->toStr(); |
| size_t n = strcspn(uri2.c_str(), "/:"); |
| if (n < uri2.size() && uri2[n] == ':') { |
| // "http:..." etc. |
| uri = uri2; |
| } else if (!uri2.compare(0, 4, "www.")) { |
| // "www.[...]" without the leading "http://" |
| uri = "http://" + uri2; |
| } else { |
| // relative URI |
| if (baseURI) { |
| uri = *baseURI; |
| if (!uri.empty()) { |
| char c = uri.back(); |
| if (c != '/' && c != '?') { |
| uri += '/'; |
| } |
| } |
| if (uri2[0] == '/') { |
| uri.append(uri2.c_str() + 1, uri2.size() - 1); |
| } else { |
| uri += uri2; |
| } |
| } else { |
| uri = uri2; |
| } |
| } |
| } else { |
| error(errSyntaxWarning, -1, "Illegal URI-type link"); |
| } |
| } |
| |
| LinkURI::~LinkURI() = default; |
| |
| //------------------------------------------------------------------------ |
| // LinkNamed |
| //------------------------------------------------------------------------ |
| |
| LinkNamed::LinkNamed(const Object *nameObj) |
| { |
| hasNameFlag = false; |
| if (nameObj->isName()) { |
| name = (nameObj->getName()) ? nameObj->getName() : ""; |
| hasNameFlag = true; |
| } |
| } |
| |
| LinkNamed::~LinkNamed() = default; |
| |
| //------------------------------------------------------------------------ |
| // LinkMovie |
| //------------------------------------------------------------------------ |
| |
| LinkMovie::LinkMovie(const Object *obj) |
| { |
| annotRef = Ref::INVALID(); |
| hasAnnotTitleFlag = false; |
| |
| const Object &annotationObj = obj->dictLookupNF("Annotation"); |
| if (annotationObj.isRef()) { |
| annotRef = annotationObj.getRef(); |
| } |
| |
| Object tmp = obj->dictLookup("T"); |
| if (tmp.isString()) { |
| annotTitle = tmp.getString()->toStr(); |
| hasAnnotTitleFlag = true; |
| } |
| |
| if ((!hasAnnotTitleFlag) && (annotRef == Ref::INVALID())) { |
| error(errSyntaxError, -1, "Movie action is missing both the Annot and T keys"); |
| } |
| |
| tmp = obj->dictLookup("Operation"); |
| if (tmp.isName()) { |
| const char *name = tmp.getName(); |
| |
| if (!strcmp(name, "Play")) { |
| operation = operationTypePlay; |
| } else if (!strcmp(name, "Stop")) { |
| operation = operationTypeStop; |
| } else if (!strcmp(name, "Pause")) { |
| operation = operationTypePause; |
| } else if (!strcmp(name, "Resume")) { |
| operation = operationTypeResume; |
| } |
| } |
| } |
| |
| LinkMovie::~LinkMovie() = default; |
| |
| //------------------------------------------------------------------------ |
| // LinkSound |
| //------------------------------------------------------------------------ |
| |
| LinkSound::LinkSound(const Object *soundObj) |
| { |
| volume = 1.0; |
| sync = false; |
| repeat = false; |
| mix = false; |
| sound = nullptr; |
| if (soundObj->isDict()) { |
| // volume |
| Object tmp = soundObj->dictLookup("Volume"); |
| if (tmp.isNum()) { |
| volume = tmp.getNum(); |
| } |
| // sync |
| tmp = soundObj->dictLookup("Synchronous"); |
| if (tmp.isBool()) { |
| sync = tmp.getBool(); |
| } |
| // repeat |
| tmp = soundObj->dictLookup("Repeat"); |
| if (tmp.isBool()) { |
| repeat = tmp.getBool(); |
| } |
| // mix |
| tmp = soundObj->dictLookup("Mix"); |
| if (tmp.isBool()) { |
| mix = tmp.getBool(); |
| } |
| // 'Sound' object |
| tmp = soundObj->dictLookup("Sound"); |
| sound = Sound::parseSound(&tmp); |
| } |
| } |
| |
| LinkSound::~LinkSound() = default; |
| |
| //------------------------------------------------------------------------ |
| // LinkRendition |
| //------------------------------------------------------------------------ |
| |
| LinkRendition::LinkRendition(const Object *obj) |
| { |
| operation = NoRendition; |
| media = nullptr; |
| int operationCode = -1; |
| |
| screenRef = Ref::INVALID(); |
| |
| if (obj->isDict()) { |
| Object tmp = obj->dictLookup("JS"); |
| if (!tmp.isNull()) { |
| if (tmp.isString()) { |
| js = tmp.getString()->toStr(); |
| } else if (tmp.isStream()) { |
| Stream *stream = tmp.getStream(); |
| stream->fillString(js); |
| } else { |
| error(errSyntaxWarning, -1, "Invalid Rendition Action: JS not string or stream"); |
| } |
| } |
| |
| tmp = obj->dictLookup("OP"); |
| if (tmp.isInt()) { |
| operationCode = tmp.getInt(); |
| if (js.empty() && (operationCode < 0 || operationCode > 4)) { |
| error(errSyntaxWarning, -1, "Invalid Rendition Action: unrecognized operation valued: {0:d}", operationCode); |
| } else { |
| // retrieve rendition object |
| Object renditionObj = obj->dictLookup("R"); |
| if (renditionObj.isDict()) { |
| media = new MediaRendition(&renditionObj); |
| } else if (operationCode == 0 || operationCode == 4) { |
| error(errSyntaxWarning, -1, "Invalid Rendition Action: no R field with op = {0:d}", operationCode); |
| renditionObj.setToNull(); |
| } |
| |
| const Object &anObj = obj->dictLookupNF("AN"); |
| if (anObj.isRef()) { |
| screenRef = anObj.getRef(); |
| } else if (operation >= 0 && operation <= 4) { |
| error(errSyntaxWarning, -1, "Invalid Rendition Action: no AN field with op = {0:d}", operationCode); |
| } |
| } |
| |
| switch (operationCode) { |
| case 0: |
| operation = PlayRendition; |
| break; |
| case 1: |
| operation = StopRendition; |
| break; |
| case 2: |
| operation = PauseRendition; |
| break; |
| case 3: |
| operation = ResumeRendition; |
| break; |
| case 4: |
| operation = PlayRendition; |
| break; |
| } |
| } else if (js.empty()) { |
| error(errSyntaxWarning, -1, "Invalid Rendition action: no OP or JS field defined"); |
| } |
| } |
| } |
| |
| LinkRendition::~LinkRendition() |
| { |
| delete media; |
| } |
| |
| //------------------------------------------------------------------------ |
| // LinkJavaScript |
| //------------------------------------------------------------------------ |
| |
| LinkJavaScript::LinkJavaScript(Object *jsObj) |
| { |
| isValid = false; |
| |
| if (jsObj->isString()) { |
| js = jsObj->getString()->toStr(); |
| isValid = true; |
| } else if (jsObj->isStream()) { |
| Stream *stream = jsObj->getStream(); |
| stream->fillString(js); |
| isValid = true; |
| } |
| } |
| |
| LinkJavaScript::~LinkJavaScript() = default; |
| |
| Object LinkJavaScript::createObject(XRef *xref, const std::string &js) |
| { |
| Dict *linkDict = new Dict(xref); |
| linkDict->add("S", Object(objName, "JavaScript")); |
| linkDict->add("JS", Object(new GooString(js))); |
| |
| return Object(linkDict); |
| } |
| |
| //------------------------------------------------------------------------ |
| // LinkOCGState |
| //------------------------------------------------------------------------ |
| LinkOCGState::LinkOCGState(const Object *obj) : isValid(true) |
| { |
| Object obj1 = obj->dictLookup("State"); |
| if (obj1.isArray()) { |
| StateList stList; |
| |
| for (int i = 0; i < obj1.arrayGetLength(); ++i) { |
| const Object &obj2 = obj1.arrayGetNF(i); |
| if (obj2.isName()) { |
| if (!stList.list.empty()) { |
| stateList.push_back(stList); |
| } |
| |
| const char *name = obj2.getName(); |
| stList.list.clear(); |
| if (!strcmp(name, "ON")) { |
| stList.st = On; |
| } else if (!strcmp(name, "OFF")) { |
| stList.st = Off; |
| } else if (!strcmp(name, "Toggle")) { |
| stList.st = Toggle; |
| } else { |
| error(errSyntaxWarning, -1, "Invalid name '{0:s}' in OCG Action state array", name); |
| isValid = false; |
| } |
| } else if (obj2.isRef()) { |
| stList.list.push_back(obj2.getRef()); |
| } else { |
| error(errSyntaxWarning, -1, "Invalid item in OCG Action State array"); |
| isValid = false; |
| } |
| } |
| // Add the last group |
| if (!stList.list.empty()) { |
| stateList.push_back(stList); |
| } |
| } else { |
| error(errSyntaxWarning, -1, "Invalid OCGState action"); |
| isValid = false; |
| } |
| |
| preserveRB = obj->dictLookup("PreserveRB").getBoolWithDefaultValue(true); |
| } |
| |
| LinkOCGState::~LinkOCGState() = default; |
| |
| //------------------------------------------------------------------------ |
| // LinkHide |
| //------------------------------------------------------------------------ |
| |
| LinkHide::LinkHide(const Object *hideObj) |
| { |
| hasTargetNameFlag = false; |
| show = false; // Default |
| |
| if (hideObj->isDict()) { |
| const Object targetObj = hideObj->dictLookup("T"); |
| if (targetObj.isString()) { |
| targetName = targetObj.getString()->toStr(); |
| hasTargetNameFlag = true; |
| } |
| const Object shouldHide = hideObj->dictLookup("H"); |
| if (shouldHide.isBool()) { |
| show = !shouldHide.getBool(); |
| } |
| } |
| } |
| |
| LinkHide::~LinkHide() = default; |
| |
| //------------------------------------------------------------------------ |
| // LinkResetForm |
| //------------------------------------------------------------------------ |
| |
| LinkResetForm::LinkResetForm(const Object *obj) |
| { |
| Object obj1; |
| |
| exclude = false; |
| |
| obj1 = obj->dictLookup("Fields"); |
| if (obj1.isArray()) { |
| fields.resize(obj1.arrayGetLength()); |
| for (int i = 0; i < obj1.arrayGetLength(); ++i) { |
| const Object &obj2 = obj1.arrayGetNF(i); |
| if (obj2.isName()) { |
| fields[i] = std::string(obj2.getName()); |
| } else if (obj2.isString()) { |
| fields[i] = obj2.getString()->toStr(); |
| } else if (obj2.isRef()) { |
| fields[i] = std::to_string(obj2.getRef().num); |
| fields[i].append(" "); |
| fields[i].append(std::to_string(obj2.getRef().gen)); |
| fields[i].append(" R"); |
| } else { |
| error(errSyntaxWarning, -1, "LinkResetForm: unexpected Field type"); |
| } |
| } |
| } |
| |
| obj1 = obj->dictLookup("Flags"); |
| if (obj1.isInt()) { |
| int flags = obj1.getInt(); |
| |
| if (flags & 0x1) { |
| exclude = true; |
| } |
| } |
| } |
| |
| LinkResetForm::~LinkResetForm() = default; |
| |
| //------------------------------------------------------------------------ |
| // LinkSubmitForm |
| //------------------------------------------------------------------------ |
| |
| LinkSubmitForm::LinkSubmitForm(const Object *obj) |
| { |
| if (!obj->isDict()) { |
| return; |
| } |
| |
| const Object objFields = obj->dictLookup("Fields"); |
| if (objFields.isArray()) { |
| fields.resize(objFields.arrayGetLength()); |
| for (int i = 0; i < objFields.arrayGetLength(); ++i) { |
| const Object &objNF = objFields.arrayGetNF(i); |
| if (objNF.isName()) { |
| fields[i] = std::string(objNF.getName()); |
| } else if (objNF.isString()) { |
| fields[i] = objNF.getString()->toStr(); |
| } else if (objNF.isRef()) { |
| fields[i] = std::to_string(objNF.getRef().num); |
| fields[i].append(" "); |
| fields[i].append(std::to_string(objNF.getRef().gen)); |
| fields[i].append(" R"); |
| } else { |
| error(errSyntaxWarning, -1, "LinkSubmitForm: unexpected Field type"); |
| } |
| } |
| } |
| |
| Object objFileSpecification = obj->dictLookup("F"); |
| if (objFileSpecification.isDict()) { |
| objFileSpecification = objFileSpecification.dictLookup("F"); |
| if (objFileSpecification.isString()) { |
| url = objFileSpecification.getString()->toStr(); |
| } |
| } else if (objFileSpecification.isString()) { |
| url = objFileSpecification.getString()->toStr(); |
| } |
| |
| const Object objFlags = obj->dictLookup("Flags"); |
| if (objFlags.isInt()) { |
| flags = objFlags.getInt(); |
| } |
| // It is the responsibility of the frontend to remove fields that have NoExport flag set. |
| } |
| |
| LinkSubmitForm::~LinkSubmitForm() = default; |
| |
| //------------------------------------------------------------------------ |
| // LinkUnknown |
| //------------------------------------------------------------------------ |
| |
| LinkUnknown::LinkUnknown(const char *actionA) |
| { |
| action = std::string(actionA ? actionA : ""); |
| } |
| |
| LinkUnknown::~LinkUnknown() = default; |
| |
| //------------------------------------------------------------------------ |
| // Links |
| //------------------------------------------------------------------------ |
| |
| Links::Links(Annots *annots) |
| { |
| if (!annots) { |
| return; |
| } |
| |
| for (Annot *annot : annots->getAnnots()) { |
| |
| if (annot->getType() != Annot::typeLink) { |
| continue; |
| } |
| |
| annot->incRefCnt(); |
| links.push_back(static_cast<AnnotLink *>(annot)); |
| } |
| } |
| |
| Links::~Links() |
| { |
| for (AnnotLink *link : links) { |
| link->decRefCnt(); |
| } |
| } |
