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Diffstat (limited to 'qt5/demos/viewer.cpp')
| -rw-r--r-- | qt5/demos/viewer.cpp | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/qt5/demos/viewer.cpp b/qt5/demos/viewer.cpp new file mode 100644 index 00000000..a95d7f33 --- /dev/null +++ b/qt5/demos/viewer.cpp @@ -0,0 +1,319 @@ +/* + * Copyright (C) 2008-2009, Pino Toscano <pino@kde.org> + * Copyright (C) 2008, Albert Astals Cid <aacid@kde.org> + * Copyright (C) 2009, Shawn Rutledge <shawn.t.rutledge@gmail.com> + * Copyright (C) 2013, Fabio D'Urso <fabiodurso@hotmail.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. + */ + +#include "viewer.h" + +#include "embeddedfiles.h" +#include "fonts.h" +#include "info.h" +#include "metadata.h" +#include "navigationtoolbar.h" +#include "optcontent.h" +#include "pageview.h" +#include "permissions.h" +#include "thumbnails.h" +#include "toc.h" + +#include <poppler-qt5.h> + +#include <QtCore/QDir> +#include <QtWidgets/QAction> +#include <QtWidgets/QApplication> +#include <QtWidgets/QFileDialog> +#include <QtWidgets/QInputDialog> +#include <QtWidgets/QMenu> +#include <QtWidgets/QMenuBar> +#include <QtWidgets/QMessageBox> + +PdfViewer::PdfViewer() + : QMainWindow(), m_currentPage(0), m_doc(0) +{ + setWindowTitle(tr("Poppler-Qt5 Demo")); + + // setup the menus + QMenu *fileMenu = menuBar()->addMenu(tr("&File")); + m_fileOpenAct = fileMenu->addAction(tr("&Open"), this, SLOT(slotOpenFile())); + m_fileOpenAct->setShortcut(Qt::CTRL + Qt::Key_O); + fileMenu->addSeparator(); + m_fileSaveCopyAct = fileMenu->addAction(tr("&Save a Copy..."), this, SLOT(slotSaveCopy())); + m_fileSaveCopyAct->setShortcut(Qt::CTRL + Qt::SHIFT + Qt::Key_S); + m_fileSaveCopyAct->setEnabled(false); + fileMenu->addSeparator(); + QAction *act = fileMenu->addAction(tr("&Quit"), qApp, SLOT(closeAllWindows())); + act->setShortcut(Qt::CTRL + Qt::Key_Q); + + QMenu *viewMenu = menuBar()->addMenu(tr("&View")); + + QMenu *settingsMenu = menuBar()->addMenu(tr("&Settings")); + m_settingsTextAAAct = settingsMenu->addAction(tr("Text Antialias")); + m_settingsTextAAAct->setCheckable(true); + connect(m_settingsTextAAAct, SIGNAL(toggled(bool)), this, SLOT(slotToggleTextAA(bool))); + m_settingsGfxAAAct = settingsMenu->addAction(tr("Graphics Antialias")); + m_settingsGfxAAAct->setCheckable(true); + connect(m_settingsGfxAAAct, SIGNAL(toggled(bool)), this, SLOT(slotToggleGfxAA(bool))); + QMenu *settingsRenderMenu = settingsMenu->addMenu(tr("Render Backend")); + m_settingsRenderBackendGrp = new QActionGroup(settingsRenderMenu); + m_settingsRenderBackendGrp->setExclusive(true); + act = settingsRenderMenu->addAction(tr("Splash")); + act->setCheckable(true); + act->setChecked(true); + act->setData(qVariantFromValue(0)); + m_settingsRenderBackendGrp->addAction(act); + act = settingsRenderMenu->addAction(tr("Arthur")); + act->setCheckable(true); + act->setData(qVariantFromValue(1)); + m_settingsRenderBackendGrp->addAction(act); + connect(m_settingsRenderBackendGrp, SIGNAL(triggered(QAction*)), + this, SLOT(slotRenderBackend(QAction*))); + + QMenu *helpMenu = menuBar()->addMenu(tr("&Help")); + act = helpMenu->addAction(tr("&About"), this, SLOT(slotAbout())); + act = helpMenu->addAction(tr("About &Qt"), this, SLOT(slotAboutQt())); + + NavigationToolBar *navbar = new NavigationToolBar(this); + addToolBar(navbar); + m_observers.append(navbar); + + PageView *view = new PageView(this); + setCentralWidget(view); + m_observers.append(view); + + InfoDock *infoDock = new InfoDock(this); + addDockWidget(Qt::LeftDockWidgetArea, infoDock); + infoDock->hide(); + viewMenu->addAction(infoDock->toggleViewAction()); + m_observers.append(infoDock); + + TocDock *tocDock = new TocDock(this); + addDockWidget(Qt::LeftDockWidgetArea, tocDock); + tocDock->hide(); + viewMenu->addAction(tocDock->toggleViewAction()); + m_observers.append(tocDock); + + FontsDock *fontsDock = new FontsDock(this); + addDockWidget(Qt::LeftDockWidgetArea, fontsDock); + fontsDock->hide(); + viewMenu->addAction(fontsDock->toggleViewAction()); + m_observers.append(fontsDock); + + PermissionsDock *permissionsDock = new PermissionsDock(this); + addDockWidget(Qt::LeftDockWidgetArea, permissionsDock); + permissionsDock->hide(); + viewMenu->addAction(permissionsDock->toggleViewAction()); + m_observers.append(permissionsDock); + + ThumbnailsDock *thumbnailsDock = new ThumbnailsDock(this); + addDockWidget(Qt::LeftDockWidgetArea, thumbnailsDock); + thumbnailsDock->hide(); + viewMenu->addAction(thumbnailsDock->toggleViewAction()); + m_observers.append(thumbnailsDock); + + EmbeddedFilesDock *embfilesDock = new EmbeddedFilesDock(this); + addDockWidget(Qt::BottomDockWidgetArea, embfilesDock); + embfilesDock->hide(); + viewMenu->addAction(embfilesDock->toggleViewAction()); + m_observers.append(embfilesDock); + + MetadataDock *metadataDock = new MetadataDock(this); + addDockWidget(Qt::BottomDockWidgetArea, metadataDock); + metadataDock->hide(); + viewMenu->addAction(metadataDock->toggleViewAction()); + m_observers.append(metadataDock); + + OptContentDock *optContentDock = new OptContentDock(this); + addDockWidget(Qt::LeftDockWidgetArea, optContentDock); + optContentDock->hide(); + viewMenu->addAction(optContentDock->toggleViewAction()); + m_observers.append(optContentDock); + + Q_FOREACH(DocumentObserver *obs, m_observers) { + obs->m_viewer = this; + } + + connect(navbar, SIGNAL(zoomChanged(qreal)), view, SLOT(slotZoomChanged(qreal))); + connect(navbar, SIGNAL(rotationChanged(int)), view, SLOT(slotRotationChanged(int))); + + // activate AA by default + m_settingsTextAAAct->setChecked(true); + m_settingsGfxAAAct->setChecked(true); +} + +PdfViewer::~PdfViewer() +{ + closeDocument(); +} + +QSize PdfViewer::sizeHint() const +{ + return QSize(500, 600); +} + +void PdfViewer::loadDocument(const QString &file) +{ + Poppler::Document *newdoc = Poppler::Document::load(file); + if (!newdoc) { + QMessageBox msgbox(QMessageBox::Critical, tr("Open Error"), tr("Cannot open:\n") + file, + QMessageBox::Ok, this); + msgbox.exec(); + return; + } + + while (newdoc->isLocked()) { + bool ok = true; + QString password = QInputDialog::getText(this, tr("Document Password"), + tr("Please insert the password of the document:"), + QLineEdit::Password, QString(), &ok); + if (!ok) { + delete newdoc; + return; + } + newdoc->unlock(password.toLatin1(), password.toLatin1()); + } + + closeDocument(); + + m_doc = newdoc; + + m_doc->setRenderHint(Poppler::Document::TextAntialiasing, m_settingsTextAAAct->isChecked()); + m_doc->setRenderHint(Poppler::Document::Antialiasing, m_settingsGfxAAAct->isChecked()); + m_doc->setRenderBackend((Poppler::Document::RenderBackend)m_settingsRenderBackendGrp->checkedAction()->data().toInt()); + + Q_FOREACH(DocumentObserver *obs, m_observers) { + obs->documentLoaded(); + obs->pageChanged(0); + } + + m_fileSaveCopyAct->setEnabled(true); +} + +void PdfViewer::closeDocument() +{ + if (!m_doc) { + return; + } + + Q_FOREACH(DocumentObserver *obs, m_observers) { + obs->documentClosed(); + } + + m_currentPage = 0; + delete m_doc; + m_doc = 0; + + m_fileSaveCopyAct->setEnabled(false); +} + +void PdfViewer::slotOpenFile() +{ + QString fileName = QFileDialog::getOpenFileName(this, tr("Open PDF Document"), QDir::homePath(), tr("PDF Documents (*.pdf)")); + if (fileName.isEmpty()) { + return; + } + + loadDocument(fileName); +} + +void PdfViewer::slotSaveCopy() +{ + if (!m_doc) { + return; + } + + QString fileName = QFileDialog::getSaveFileName(this, tr("Save Copy"), QDir::homePath(), tr("PDF Documents (*.pdf)")); + if (fileName.isEmpty()) { + return; + } + + Poppler::PDFConverter *converter = m_doc->pdfConverter(); + converter->setOutputFileName(fileName); + converter->setPDFOptions(converter->pdfOptions() & ~Poppler::PDFConverter::WithChanges); + if (!converter->convert()) { + QMessageBox msgbox(QMessageBox::Critical, tr("Save Error"), tr("Cannot export to:\n%1").arg(fileName), + QMessageBox::Ok, this); + } + delete converter; +} + +void PdfViewer::slotAbout() +{ + const QString text("This is a demo of the Poppler-Qt5 library."); + QMessageBox::about(this, QString::fromLatin1("About Poppler-Qt5 Demo"), text); +} + +void PdfViewer::slotAboutQt() +{ + QMessageBox::aboutQt(this); +} + +void PdfViewer::slotToggleTextAA(bool value) +{ + if (!m_doc) { + return; + } + + m_doc->setRenderHint(Poppler::Document::TextAntialiasing, value); + + Q_FOREACH(DocumentObserver *obs, m_observers) { + obs->pageChanged(m_currentPage); + } +} + +void PdfViewer::slotToggleGfxAA(bool value) +{ + if (!m_doc) { + return; + } + + m_doc->setRenderHint(Poppler::Document::Antialiasing, value); + + Q_FOREACH(DocumentObserver *obs, m_observers) { + obs->pageChanged(m_currentPage); + } +} + +void PdfViewer::slotRenderBackend(QAction *act) +{ + if (!m_doc || !act) { + return; + } + + m_doc->setRenderBackend((Poppler::Document::RenderBackend)act->data().toInt()); + + Q_FOREACH(DocumentObserver *obs, m_observers) { + obs->pageChanged(m_currentPage); + } +} + +void PdfViewer::setPage(int page) +{ + Q_FOREACH(DocumentObserver *obs, m_observers) { + obs->pageChanged(page); + } + + m_currentPage = page; +} + +int PdfViewer::page() const +{ + return m_currentPage; +} + +#include "viewer.moc" |