diff options
Diffstat (limited to 'src-qt5/experimental/lumina-pdf/mainUI.cpp')
| -rw-r--r-- | src-qt5/experimental/lumina-pdf/mainUI.cpp | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src-qt5/experimental/lumina-pdf/mainUI.cpp b/src-qt5/experimental/lumina-pdf/mainUI.cpp new file mode 100644 index 00000000..fefa6158 --- /dev/null +++ b/src-qt5/experimental/lumina-pdf/mainUI.cpp @@ -0,0 +1,178 @@ +//=========================================== +// Lumina Desktop source code +// Copyright (c) 2017, Ken Moore +// Available under the 3-clause BSD license +// See the LICENSE file for full details +//=========================================== +#include "mainUI.h" +#include "ui_mainUI.h" + +#include <QPainter> +#include <QImage> +#include <QSize> +#include <QFileDialog> +#include <QInputDialog> +#include <QDebug> +#include <QApplication> +#include <QScreen> + +#include <LuminaXDG.h> + +MainUI::MainUI() : QMainWindow(), ui(new Ui::MainUI()){ + ui->setupUi(this); + + this->setWindowTitle(tr("Lumina PDF Viewer")); + this->setWindowIcon( LXDG::findIcon("application-pdf","unknown")); + + lastdir = QDir::homePath(); + Printer = new QPrinter(); + WIDGET = new QPrintPreviewWidget(Printer,this); + this->setCentralWidget(WIDGET); + connect(WIDGET, SIGNAL(paintRequested(QPrinter*)), this, SLOT(paintOnWidget(QPrinter*)) ); + DOC = 0; + + PrintDLG = new QPrintDialog(this); + connect(PrintDLG, SIGNAL(accepted(QPrinter*)), this, SLOT(paintOnWidget(QPrinter*)) ); //Can change to PaintToPrinter() later + + //Create the other interface widgets + progress = new QProgressBar(this); + progress->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred); + progress->setFormat("%v/%m (%p%)"); // [current]/[total] + progAct = ui->toolBar->addWidget(progress); + progAct->setVisible(false); + //Put the various actions into logical groups + QActionGroup *tmp = new QActionGroup(this); + tmp->setExclusive(true); + tmp->addAction(ui->actionFit_Width); + tmp->addAction(ui->actionFit_Page); + ui->actionFit_Page->setChecked(true); + + tmp = new QActionGroup(this); + tmp->setExclusive(true); + tmp->addAction(ui->actionSingle_Page); + tmp->addAction(ui->actionDual_Pages); + tmp->addAction(ui->actionAll_Pages); + ui->actionSingle_Page->setChecked(true); + + //Connect up the buttons + connect(ui->actionClose, SIGNAL(triggered()), this, SLOT(close()) ); + connect(ui->actionPrint, SIGNAL(triggered()), PrintDLG, SLOT(open()) ); + connect(ui->actionFit_Width, SIGNAL(triggered()), WIDGET, SLOT(fitToWidth()) ); + connect(ui->actionFit_Page, SIGNAL(triggered()), WIDGET, SLOT(fitInView()) ); + connect(ui->actionOpen_PDF, SIGNAL(triggered()), this, SLOT(OpenNewFile()) ); + connect(ui->actionSingle_Page, SIGNAL(triggered()), WIDGET, SLOT(setSinglePageViewMode()) ); + connect(ui->actionDual_Pages, SIGNAL(triggered()), WIDGET, SLOT(setFacingPagesViewMode()) ); + connect(ui->actionAll_Pages, SIGNAL(triggered()), WIDGET, SLOT(setAllPagesViewMode()) ); + + //Setup all the icons + ui->actionPrint->setIcon( LXDG::findIcon("document-print","")); + ui->actionClose->setIcon( LXDG::findIcon("window-close","")); + ui->actionFit_Width->setIcon(LXDG::findIcon("zoom-fit-width","")); + ui->actionFit_Page->setIcon(LXDG::findIcon("zoom-fit-best","")); + ui->actionOpen_PDF->setIcon(LXDG::findIcon("document-open","")); + ui->actionSingle_Page->setIcon(LXDG::findIcon("view-preview","")); + ui->actionDual_Pages->setIcon(LXDG::findIcon("view-split-left-right","")); + ui->actionAll_Pages->setIcon(LXDG::findIcon("view-grid","")); +} + +MainUI::~MainUI(){ + +} + +void MainUI::loadFile(QString path){ + + if(!QFile::exists(path) || path.isEmpty() ){ return; } + Poppler::Document *TDOC = Poppler::Document::load(path); + if(TDOC==0){ + qDebug() << "Could not open file:" << path; + return; + }else if(TDOC->isLocked()){ + //Prompt for password to unlock the document + QString pass = ""; + bool ok = true; //flag this to go into the loop the first time (if password prompt is cancelled - this becomes false) + while( (ok ? true : !TDOC->unlock(QByteArray(), pass.toLocal8Bit())) ){ //make sure the unlock function is only called when ok is true + pass = QInputDialog::getText(this, tr("Unlock PDF"), tr("Password:"), QLineEdit::Password, "", &ok); + } + if(TDOC->isLocked()){ return; } //Cancelled - still locked + } + + if(DOC!=0){ + //Clear out the old document first + delete DOC; + DOC=0; + } + DOC = TDOC; //Save this for later + qDebug() << "Opening File:" << path; + this->setWindowTitle(DOC->title()); + if(this->windowTitle().isEmpty()){ this->setWindowTitle(path.section("/",-1)); } + + //Setup the Document + Poppler::Page *PAGE = DOC->page(0); + if(PAGE!=0){ + lastdir = path.section("/",0,-2); //save this for later + Printer->setPageSize( QPageSize(PAGE->pageSize(), QPageSize::Point) ); + Printer->setPageMargins(QMarginsF(0,0,0,0), QPageLayout::Point); + switch(PAGE->orientation()){ + case Poppler::Page::Landscape: + Printer->setOrientation(QPrinter::Landscape); break; + default: + Printer->setOrientation(QPrinter::Portrait); + } + delete PAGE; + WIDGET->updatePreview(); //start loading the file preview + } + +} + +void MainUI::paintOnWidget(QPrinter *PRINTER){ + if(DOC==0){ return; } + //this->show(); + //QApplication::processEvents(); + int pages = DOC->numPages(); + int firstpage = 0; + //qDebug() << "Start Rendering PDF:" << PRINTER->fromPage() << PRINTER->toPage(); + if(PRINTER->fromPage() != PRINTER->toPage() || PRINTER->fromPage()!=0){ + firstpage = PRINTER->fromPage() - 1; + pages = PRINTER->toPage(); + } + qDebug() << " - Generating Pages:" << firstpage << pages; + //Now start painting all the pages onto the widget + QRectF size = PRINTER->pageRect(QPrinter::DevicePixel); + QSize DPI(PRINTER->resolution(),PRINTER->resolution()); + //QScreen *scrn = QApplication::screens().first(); + //QSize SDPI(scrn->logicalDotsPerInchX(), scrn->logicalDotsPerInchY()); + QPainter painter(PRINTER); + //qDebug() << "Set progress bar range:" << firstpage+1 << pages; + progress->setRange(firstpage+1,pages+1); + //progress->setValue(firstpage); + progAct->setVisible(true); + qDebug() << "Printer DPI:" << DPI; + //qDebug() << "Screen DPI:" << SDPI; + for(int i=firstpage; i<pages; i++){ + //qDebug() << "Loading Page:" << i; + progress->setValue(i+1); + //qDebug() << " - ProcessEvents"; + QApplication::processEvents(); + //Now paint this page on the printer + //qDebug() << " - Load Poppler Page"; + if(i != firstpage){ PRINTER->newPage(); } //this is the start of the next page (not needed for first) + Poppler::Page *PAGE = DOC->page(i); + if(PAGE!=0){ + painter.drawImage(0,0,PAGE->renderToImage(2*DPI.width(), 2*DPI.height()).scaled(size.width(), size.height(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation) ); + }else{ + painter.drawImage(0,0,QImage()); + } + if(PAGE!=0){ delete PAGE; } + //QApplication::processEvents(); + } + //qDebug() << "Done Loading Pages"; + progAct->setVisible(false); +} + +void MainUI::OpenNewFile(){ + //Prompt for a file + QString path = QFileDialog::getOpenFileName(this, tr("Open PDF"), lastdir, tr("PDF Documents (*.pdf)")); + //Now Open it + if(!path.isEmpty()){ loadFile(path); } + +} |