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#include "Renderer.h"
#include <poppler/qt5/poppler-qt5.h>
#include <QThread>
class Link {
public:
Link(TextData *_data, Poppler::Link *_link) : data(_data), link(_link) { }
~Link() { delete data; }
TextData* getData() { return data; }
Poppler::Link* getLink() { return link; }
private:
TextData *data;
Poppler::Link *link;
};
static Poppler::Document *DOC;
QHash<int, QImage> loadingHash;
QHash<int, QList<Link*>> linkHash;
Renderer::Renderer(){
DOC = 0;
needpass = false;
pnum = 0;
degrees = 0;
}
Renderer::~Renderer(){
//qDeleteAll(loadingHash);
loadingHash.clear();
}
bool Renderer::loadMultiThread(){ return true; }
/*QJsonObject Renderer::properties(){
return QJsonObject(); //TO-DO
}*/
bool Renderer::loadDocument(QString path, QString password){
//qDebug() << "Load Document:" << path;
if(DOC!=0 && path!=docpath){
//Clear out the old document first
delete DOC;
DOC=0;
if(linkHash.size() > 0) {
foreach(QList<Link*> linkArray, linkHash) {
qDeleteAll(linkArray);
}
linkHash.clear();
}
needpass = false;
pnum=0;
docpath = path;
}
//Load the Document (if needed);
if(DOC==0){
//qDebug() << "Loading Document";
DOC = Poppler::Document::load(path);
docpath = path;
}
if(DOC==0){
qDebug() << "Could not open file:" << path;
return false;
}else if(DOC->isLocked()){
//qDebug() << "Document Locked";
needpass = true;
if(password.isEmpty()){ return false; } //stop here - need to get password from user before continuing
needpass = !DOC->unlock(QByteArray(), password.toLocal8Bit());
if(needpass){ return false; } //invalid password
}
//qDebug() << "Opening File:" << path;
doctitle = DOC->title();
if(doctitle.isEmpty()){ doctitle = path.section("/",-1); }
pnum = DOC->numPages();
//Setup the Document
Poppler::Page *PAGE = DOC->page(0);
if(PAGE!=0){
/*switch(PAGE->orientation()){
case Poppler::Page::Landscape:
WIDGET->setOrientation(QPageLayout::Landscape); break;
default:
WIDGET->setOrientation(QPageLayout::Portrait);
}*/
delete PAGE;
return true; //could load the first page
}
return false; //nothing to load
}
void Renderer::renderPage(int pagenum, QSize DPI, int degrees){
//qDebug() << "Render Page:" << pagenum << DPI << degrees;
if(DOC!=0){
Poppler::Page *PAGE = DOC->page(pagenum);
QImage img;
if(PAGE!=0){
Poppler::Page::Rotation rotation;
switch(degrees) {
case 90:
rotation = Poppler::Page::Rotation::Rotate90;
break;
case 180:
rotation = Poppler::Page::Rotation::Rotate180;
break;
case 270:
rotation = Poppler::Page::Rotation::Rotate270;
break;
default:
rotation = Poppler::Page::Rotation::Rotate0;
}
img = PAGE->renderToImage(DPI.width(), DPI.height(), -1, -1, -1, -1, rotation);
loadingHash.insert(pagenum, img);
QList<Link*> linkArray;
foreach(Poppler::Link *link, PAGE->links()) {
QString location;
if(link->linkType() == Poppler::Link::LinkType::Goto)
location = dynamic_cast<Poppler::LinkGoto*>(link)->fileName();
else if(link->linkType() == Poppler::Link::LinkType::Goto)
location = dynamic_cast<Poppler::LinkBrowse*>(link)->url();
Link *newLink = new Link(new TextData(link->linkArea(), pagenum, location), link);
linkArray.append(newLink);
}
linkHash.insert(pagenum, linkArray);
delete PAGE;
}
//qDebug() << "Done Render Page:" << pagenum << img.size();
}else{
loadingHash.insert(pagenum, QImage());
}
emit PageLoaded(pagenum);
}
QList<TextData*> Renderer::searchDocument(QString text, bool matchCase){
QList<TextData*> results;
for(int i = 0; i < pnum; i++) {
QList<Poppler::TextBox*> textList = DOC->page(i)->textList();
for(int j = 0; j < textList.size(); j++) {
if(textList[j]->text().contains(text,
(matchCase) ? Qt::CaseSensitive : Qt::CaseInsensitive)) {
TextData *t = new TextData(textList[j]->boundingBox(), i+1, text);
results.append(t);
}
}
}
return results;
}
QImage Renderer::imageHash(int pagenum) {
return loadingHash[pagenum];
}
int Renderer::hashSize() {
return loadingHash.keys().length();
}
void Renderer::clearHash() {
loadingHash.clear();
}
//Highlighting found text, bookmarks, and page properties disabled for Poppler
bool Renderer::supportsExtraFeatures() { return false; }
void Renderer::traverseOutline(void *, int) { }
void Renderer::handleLink(QString linkDest) {
Poppler::Link* trueLink;
foreach(QList<Link*> linkArray, linkHash) {
for(int i = 0; i < linkArray.size(); i++) {
Poppler::Link* link = linkArray[i]->getLink();
if(link->linkType() == Poppler::Link::LinkType::Browse) {
if(linkDest == dynamic_cast<Poppler::LinkBrowse*>(link)->url())
trueLink = link;
}else if(link->linkType() == Poppler::Link::LinkType::Goto) {
if(linkDest == dynamic_cast<Poppler::LinkGoto*>(link)->fileName())
trueLink = link;
}
}
}
if(trueLink) {
if(trueLink->linkType() == Poppler::Link::LinkType::Goto)
emit goToPosition(dynamic_cast<Poppler::LinkGoto*>(trueLink)->destination().pageNumber(), 0, 0);
}
}
TextData* Renderer::linkList(int pageNum, int entry) {
if(linkHash[pageNum].size() > 0)
return linkHash[pageNum][entry]->getData();
else
return 0;
}
QList<QString> Renderer::annotList(int pageNum, int entry) {
Q_UNUSED(pageNum)
Q_UNUSED(entry)
return QList<QString>() << QString() << QString();
}
int Renderer::linkSize(int pageNum) { Q_UNUSED(pageNum) return linkHash[pageNum].size(); }
int Renderer::annotSize(int pageNum) { Q_UNUSED(pageNum) return 0; }
QRectF Renderer::annotLoc(int pageNum, int entry) { Q_UNUSED(pageNum) Q_UNUSED(entry) return QRectF(); }
bool Renderer::isExternalLink(int pageNum, QString text) {
Q_UNUSED(pageNum)
Poppler::Link* trueLink;
foreach(QList<Link*> linkArray, linkHash) {
for(int i = 0; i < linkArray.size(); i++) {
Poppler::Link* link = linkArray[i]->getLink();
if(link->linkType() == Poppler::Link::LinkType::Browse) {
if(text == dynamic_cast<Poppler::LinkBrowse*>(link)->url())
trueLink = link;
}else if(link->linkType() == Poppler::Link::LinkType::Goto) {
if(text == dynamic_cast<Poppler::LinkGoto*>(link)->fileName())
trueLink = link;
}
}
}
if(trueLink) {
if(trueLink->linkType() == Poppler::Link::LinkType::Goto)
return dynamic_cast<Poppler::LinkGoto*>(trueLink)->isExternal();
if(trueLink->linkType() == Poppler::Link::LinkType::Browse)
return true;
}
return false;
}
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