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//===========================================
// Lumina Desktop source code
// Copyright (c) 2017, Ken Moore
// Available under the 3-clause BSD license
// See the LICENSE file for full details
//===========================================
#ifndef _LUMINA_PDF_VIEWER_MAIN_WINDOW_H
#define _LUMINA_PDF_VIEWER_MAIN_WINDOW_H
#include <QPrintPreviewWidget>
#include <QPrintDialog>
#include <QPrinter>
#include <QMainWindow>
#include <QProgressBar>
#include <QLabel>
#include <QKeyEvent>
#include <QDebug>
#include <poppler-qt5.h>
namespace Ui{
class MainUI;
};
class MainUI : public QMainWindow{
Q_OBJECT
public:
MainUI();
~MainUI();
void loadFile(QString path);
private:
Poppler::Document *DOC;
QPrintPreviewWidget *WIDGET;
Ui::MainUI *ui;
QPrinter* Printer;
QPrintDialog *PrintDLG;
QString lastdir;
//Other Interface elements
QProgressBar *progress;
QAction *progAct; //action associated with the progressbar
//PDF Page Loading cache variables
QHash<int, QImage> loadingHash;
int numPages;
void loadPage(int num, Poppler::Document *doc, MainUI *obj, QSize dpi, QSizeF page);
//Functions/variables for the presentation mode
QLabel *presentationLabel;
QScreen *getScreen(bool current, bool &cancelled);
int CurrentPage;
void startPresentation(bool atStart);
void ShowPage(int page);
void endPresentation();
private slots:
void startLoadingPages(QPrinter *printer);
void slotPageLoaded(int);
void slotStartPresentation(QAction *act);
void paintOnWidget(QPrinter *PRINTER);
void paintToPrinter(QPrinter *PRINTER);
//Button Slots
void OpenNewFile();
signals:
void PageLoaded(int);
protected:
void keyPressEvent(QKeyEvent *event){
//See if this is one of the special hotkeys and act appropriately
// NOTE: Some of this is duplicated with the QShortcut definitions (for non-presentation mode)
// This routine does not always work for the main window viewer due to differing widget focus policies
if(presentationLabel!=0 && presentationLabel->isVisible()){
//qDebug() << "Got Key Press:";
if( event->key()==Qt::Key_Escape || event->key()==Qt::Key_Backspace){
//qDebug() << " - Escape/Backspace";
endPresentation();
}else if(event->key()==Qt::Key_Right || event->key()==Qt::Key_Down || event->key()==Qt::Key_Space){
//qDebug() << " - Right/Down/Spacebar";
ShowPage( CurrentPage+1 );
}else if(event->key()==Qt::Key_Left || event->key()==Qt::Key_Up){
//qDebug() << " - Left/Up";
ShowPage( CurrentPage-1 );
}else if(event->key()==Qt::Key_Home){
//qDebug() << " - Home";
ShowPage(0); //go to the first page
}else if(event->key()==Qt::Key_End){
//qDebug() << " - End";
ShowPage( numPages-1 ); //go to the last page
}else if(event->key()==Qt::Key_F11){
//qDebug() << " - F11";
endPresentation();
}else{
QMainWindow::keyPressEvent(event);
}
}else{
QMainWindow::keyPressEvent(event);
}
}
};
#endif
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