| /* poppler-annotation-helper.h: qt interface to poppler |
| * Copyright (C) 2006, 2008, 2017-2019, Albert Astals Cid <aacid@kde.org> |
| * Copyright (C) 2008, Pino Toscano <pino@kde.org> |
| * Copyright (C) 2012, Fabio D'Urso <fabiodurso@hotmail.it> |
| * Copyright (C) 2018, Dileep Sankhla <sankhla.dileep96@gmail.com> |
| * Copyright (C) 2018, Carlos Garcia Campos <carlosgc@gnome.org> |
| * Copyright (C) 2018, 2019, Oliver Sander <oliver.sander@tu-dresden.de> |
| * Adapting code from |
| * Copyright (C) 2004 by Enrico Ros <eros.kde@email.it> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2, or (at your option) |
| * any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef _POPPLER_ANNOTATION_HELPER_H_ |
| #define _POPPLER_ANNOTATION_HELPER_H_ |
| |
| #include <memory> |
| |
| #include <QtCore/QDebug> |
| |
| #include <Object.h> |
| |
| class QColor; |
| |
| class AnnotColor; |
| |
| namespace Poppler { |
| |
| class XPDFReader |
| { |
| public: |
| // find named symbol and parse it |
| static inline void lookupName( Dict *, char *, QString & dest ); |
| static inline void lookupString( Dict *, char *, QString & dest ); |
| static inline void lookupBool( Dict *, char *, bool & dest ); |
| static inline void lookupInt( Dict *, char *, int & dest ); |
| static inline void lookupNum( Dict *, char *, double & dest ); |
| static inline int lookupNumArray( Dict *, char *, double * dest, int len ); |
| static inline void lookupColor( Dict *, char *, QColor & color ); |
| static inline void lookupIntRef( Dict *, char *, int & dest ); |
| static inline void lookupDate( Dict *, char *, QDateTime & dest ); |
| // transform from user coords to normalized ones using the matrix M |
| static inline void transform( double * M, double x, double y, QPointF &res ); |
| static inline void invTransform( double * M, const QPointF p, double &x, double &y ); |
| }; |
| |
| void XPDFReader::lookupName( Dict * dict, char * type, QString & dest ) |
| { |
| Object nameObj = dict->lookup( type ); |
| if ( nameObj.isNull() ) |
| return; |
| if ( nameObj.isName() ) |
| dest = nameObj.getName(); |
| else |
| qDebug() << type << " is not Name." << endl; |
| } |
| |
| void XPDFReader::lookupString( Dict * dict, char * type, QString & dest ) |
| { |
| Object stringObj = dict->lookup( type ); |
| if ( stringObj.isNull() ) |
| return; |
| if ( stringObj.isString() ) |
| dest = stringObj.getString()->c_str(); |
| else |
| qDebug() << type << " is not String." << endl; |
| } |
| |
| void XPDFReader::lookupBool( Dict * dict, char * type, bool & dest ) |
| { |
| Object boolObj = dict->lookup( type ); |
| if ( boolObj.isNull() ) |
| return; |
| if ( boolObj.isBool() ) |
| dest = boolObj.getBool() == true; |
| else |
| qDebug() << type << " is not Bool." << endl; |
| } |
| |
| void XPDFReader::lookupInt( Dict * dict, char * type, int & dest ) |
| { |
| Object intObj = dict->lookup( type ); |
| if ( intObj.isNull() ) |
| return; |
| if ( intObj.isInt() ) |
| dest = intObj.getInt(); |
| else |
| qDebug() << type << " is not Int." << endl; |
| } |
| |
| void XPDFReader::lookupNum( Dict * dict, char * type, double & dest ) |
| { |
| Object numObj = dict->lookup( type ); |
| if ( numObj.isNull() ) |
| return; |
| if ( numObj.isNum() ) |
| dest = numObj.getNum(); |
| else |
| qDebug() << type << " is not Num." << endl; |
| } |
| |
| int XPDFReader::lookupNumArray( Dict * dict, char * type, double * dest, int len ) |
| { |
| Object arrObj = dict->lookup( type ); |
| if ( arrObj.isNull() ) |
| return 0; |
| if ( arrObj.isArray() ) |
| { |
| len = qMin( len, arrObj.arrayGetLength() ); |
| for ( int i = 0; i < len; i++ ) |
| { |
| Object numObj = arrObj.arrayGet( i ); |
| dest[i] = numObj.getNum(); |
| } |
| } |
| else |
| { |
| len = 0; |
| qDebug() << type << "is not Array." << endl; |
| } |
| return len; |
| } |
| |
| void XPDFReader::lookupColor( Dict * dict, char * type, QColor & dest ) |
| { |
| double c[3]; |
| if ( XPDFReader::lookupNumArray( dict, type, c, 3 ) == 3 ) |
| dest = QColor( (int)(c[0]*255.0), (int)(c[1]*255.0), (int)(c[2]*255.0)); |
| } |
| |
| void XPDFReader::lookupIntRef( Dict * dict, char * type, int & dest ) |
| { |
| const Object &refObj = dict->lookupNF( type ); |
| if ( refObj.isNull() ) |
| return; |
| if ( refObj.isRef() ) |
| dest = refObj.getRefNum(); |
| else |
| qDebug() << type << " is not Ref." << endl; |
| } |
| |
| void XPDFReader::lookupDate( Dict * dict, char * type, QDateTime & dest ) |
| { |
| Object dateObj = dict->lookup( type ); |
| if ( dateObj.isNull() ) |
| return; |
| if ( dateObj.isString() ) |
| { |
| dest = convertDate( dateObj.getString()->c_str() ); |
| } |
| else |
| qDebug() << type << " is not Date" << endl; |
| } |
| |
| void XPDFReader::transform( double * M, double x, double y, QPointF &res ) |
| { |
| res.setX( M[0] * x + M[2] * y + M[4] ); |
| res.setY( M[1] * x + M[3] * y + M[5] ); |
| } |
| |
| void XPDFReader::invTransform( double * M, const QPointF p, double &x, double &y ) |
| { |
| const double det = M[0]*M[3] - M[1]*M[2]; |
| Q_ASSERT(det != 0); |
| |
| const double invM[4] = { M[3]/det, -M[1]/det, -M[2]/det, M[0]/det }; |
| const double xt = p.x() - M[4]; |
| const double yt = p.y() - M[5]; |
| |
| x = invM[0] * xt + invM[2] * yt; |
| y = invM[1] * xt + invM[3] * yt; |
| } |
| |
| QColor convertAnnotColor( const AnnotColor *color ); |
| std::unique_ptr<AnnotColor> convertQColor( const QColor &color ); |
| |
| } |
| |
| #endif |