diff options
Diffstat (limited to 'src-qt5/experimental/lumina-pdf/mainUI.cpp')
| -rw-r--r-- | src-qt5/experimental/lumina-pdf/mainUI.cpp | 292 |
1 files changed, 0 insertions, 292 deletions
diff --git a/src-qt5/experimental/lumina-pdf/mainUI.cpp b/src-qt5/experimental/lumina-pdf/mainUI.cpp deleted file mode 100644 index a5304221..00000000 --- a/src-qt5/experimental/lumina-pdf/mainUI.cpp +++ /dev/null @@ -1,292 +0,0 @@ -//=========================================== -// 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 <QTimer> - -#include <QtConcurrent> - -#include <LuminaXDG.h> - -MainUI::MainUI() : QMainWindow(), ui(new Ui::MainUI()){ - ui->setupUi(this); - presentationLabel = 0; - this->setWindowTitle(tr("Lumina PDF Viewer")); - this->setWindowIcon( LXDG::findIcon("application-pdf","unknown")); - CurrentPage = 0; - 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; - connect(this, SIGNAL(PageLoaded(int)), this, SLOT(slotPageLoaded(int)) ); - - PrintDLG = new QPrintDialog(this); - connect(PrintDLG, SIGNAL(accepted(QPrinter*)), this, SLOT(paintOnWidget(QPrinter*)) ); //Can change to PaintToPrinter() later - connect(ui->menuStart_Presentation, SIGNAL(triggered(QAction*)), this, SLOT(slotStartPresentation(QAction*)) ); - - //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("arrow-expand-all","")); - 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("format-view-agenda","")); - ui->actionAll_Pages->setIcon(LXDG::findIcon("format-view-grid-small","")); -} - -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; - } - loadingHash.clear(); //clear out this hash - numPages = -1; - 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; - qDebug() << " - Document Setup"; - QTimer::singleShot(10, WIDGET, SLOT(updatePreview())); //start loading the file preview - } - -} - -void MainUI::loadPage(int num, Poppler::Document *doc, MainUI *obj, QSize dpi, QSizeF page){ - //qDebug() << " - Render Page:" << num; - Poppler::Page *PAGE = doc->page(num); - if(PAGE!=0){ - loadingHash.insert(num, PAGE->renderToImage(3*dpi.width(), 3*dpi.height()).scaled(page.width(), page.height(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation) ); - }else{ - loadingHash.insert(num, QImage()); - } - if(PAGE!=0){ delete PAGE; } - obj->emit PageLoaded(num); -} - -QScreen* MainUI::getScreen(bool current, bool &cancelled){ - //Note: the "cancelled" boolian is actually an output - not an input - QList<QScreen*> screens = QApplication::screens(); - cancelled = false; - if(screens.length() ==1){ return screens[0]; } //only one option - //Multiple screens available - figure it out - if(current){ - //Just return the screen the window is currently on - for(int i=0; i<screens.length(); i++){ - if(screens[i]->geometry().contains( this->mapToGlobal(this->pos()) )){ - return screens[i]; - } - } - //If it gets this far, there was an error and it should just return the primary screen - return QApplication::primaryScreen(); - }else{ - //Ask the user to select a screen (for presentations, etc..) - QStringList names; - for(int i=0; i<screens.length(); i++){ - QString screensize = QString::number(screens[i]->size().width())+"x"+QString::number(screens[i]->size().height()); - names << QString(tr("%1 (%2)")).arg(screens[i]->name(), screensize); - } - bool ok = false; - QString sel = QInputDialog::getItem(this, tr("Select Screen"), tr("Screen:"), names, 0, false, &ok); - cancelled = !ok; - if(!ok){ return screens[0]; } //cancelled - just return the first one - int index = names.indexOf(sel); - if(index < 0){ return screens[0]; } //error - should never happen though - return screens[index]; //return the selected screen - } -} - -void MainUI::startPresentation(bool atStart){ - if(DOC==0){ return; } //just in case - bool cancelled = false; - QScreen *screen = getScreen(false, cancelled); //let the user select which screen to use (if multiples) - if(cancelled){ return;} - int page = 0; - if(!atStart){ page = CurrentPage; } - //PDPI = QSize(SCALEFACTOR*screen->physicalDotsPerInchX(), SCALEFACTOR*screen->physicalDotsPerInchY()); - //Now create the full-screen window on the selected screen - if(presentationLabel == 0){ - //Create the label and any special flags for it - presentationLabel = new QLabel(0, Qt::Window | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint); - presentationLabel->setStyleSheet("background-color: black;"); - presentationLabel->setAlignment(Qt::AlignCenter); - } - //Now put the label in the proper location - presentationLabel->setGeometry(screen->geometry()); - presentationLabel->showFullScreen(); - - ui->actionStop_Presentation->setEnabled(true); - ui->menuStart_Presentation->setEnabled(false); - QApplication::processEvents(); - //Now start at the proper page - ShowPage(page); - this->grabKeyboard(); //Grab any keyboard events - even from the presentation window -} - -void MainUI::ShowPage(int page){ - if(presentationLabel == 0 || !presentationLabel->isVisible()){ return; } - //Check for valid document/page - if(page<0 || page >=numPages ){ - endPresentation(); - return; //invalid - no document loaded or invalid page specified - } - CurrentPage = page; - QImage PAGEIMAGE = loadingHash[page]; - - //Now scale the image according to the user-designations and show it - if(!PAGEIMAGE.isNull()){ - QPixmap pix; - pix.convertFromImage( PAGEIMAGE.scaled( presentationLabel->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation) ); - presentationLabel->setPixmap(pix); - presentationLabel->show(); //always make sure it was not hidden - }else{ - presentationLabel->setPixmap(QPixmap()); - endPresentation(); - } -} - -void MainUI::endPresentation(){ - if(presentationLabel==0 || !presentationLabel->isVisible()){ return; } //not in presentation mode - presentationLabel->hide(); //just hide this (no need to re-create the label for future presentations) - ui->actionStop_Presentation->setEnabled(false); - ui->menuStart_Presentation->setEnabled(true); - this->releaseKeyboard(); -} - -void MainUI::startLoadingPages(QPrinter *printer){ - if(numPages>0){ return; } //currently loaded[ing] - //qDebug() << " - Start Loading Pages"; - numPages = DOC->numPages(); - progress->setRange(0,numPages); - progress->setValue(0); - progAct->setVisible(true); - QRectF pageSize = printer->pageRect(QPrinter::DevicePixel); - QSize DPI(printer->resolution(),printer->resolution()); - for(int i=0; i<numPages; i++){ - //qDebug() << " - Kickoff page load:" << i; - QtConcurrent::run(this, &MainUI::loadPage, i, DOC, this, DPI, pageSize.size() ); - } -} - -void MainUI::slotPageLoaded(int page){ - //qDebug() << "Page Loaded:" << page; - int finished = loadingHash.keys().length(); - if(finished == numPages){ - progress->setVisible(false); - progAct->setVisible(false); - QTimer::singleShot(0, WIDGET, SLOT(updatePreview())); - }else{ - progress->setValue(finished); - } -} - -void MainUI::slotStartPresentation(QAction *act){ - startPresentation(act == ui->actionAt_Beginning); -} - -void MainUI::paintOnWidget(QPrinter *PRINTER){ - if(DOC==0){ return; } - //this->show(); - if(loadingHash.keys().length() != numPages){ startLoadingPages(PRINTER); return; } - - 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(); - } - QPainter painter(PRINTER); - for(int i=firstpage; i<pages; i++){ - if(i != firstpage){ PRINTER->newPage(); } //this is the start of the next page (not needed for first) - if(loadingHash.contains(i)){ painter.drawImage(0,0, loadingHash[i]); } - else{ painter.drawImage(0,0, QImage()); } - } -} - -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); } -} |