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presentationwidget.cpp
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/*
SPDX-FileCopyrightText: 2004 Enrico Ros <[email protected]>
SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "presentationwidget.h"
#include "config-okular.h"
// qt/kde includes
#if HAVE_DBUS
#include <QDBusConnection>
#include <QDBusMessage>
#include <QDBusReply>
#endif
#include <QLoggingCategory>
#include <KActionCollection>
#include <KCursor>
#include <KLineEdit>
#include <KLocalizedString>
#include <KMessageBox>
#include <KSelectAction>
#include <QAction>
#include <QActionGroup>
#include <QApplication>
#include <QDialog>
#include <QEvent>
#include <QFontMetrics>
#include <QGestureEvent>
#include <QIcon>
#include <QImage>
#include <QLabel>
#include <QLayout>
#include <QPainter>
#include <QRandomGenerator>
#include <QScreen>
#include <QStyle>
#include <QStyleOption>
#include <QTimer>
#include <QToolBar>
#include <QToolTip>
#include <QValidator>
#ifdef Q_OS_LINUX
#if HAVE_DBUS
#include <QDBusUnixFileDescriptor>
#endif
#include <unistd.h> // For ::close() for sleep inhibition
#endif
// system includes
#include <math.h>
#include <stdlib.h>
// local includes
#include "annotationtools.h"
#include "core/action.h"
#include "core/annotations.h"
#include "core/audioplayer.h"
#include "core/document.h"
#include "core/generator.h"
#include "core/movie.h"
#include "core/page.h"
#include "drawingtoolactions.h"
#include "gui/debug_ui.h"
#include "gui/guiutils.h"
#include "gui/pagepainter.h"
#include "gui/priorities.h"
#include "presentationsearchbar.h"
#include "settings.h"
#include "settings_core.h"
#include "videowidget.h"
// comment this to disable the top-right progress indicator
#define ENABLE_PROGRESS_OVERLAY
// a frame contains a pointer to the page object, its geometry and the
// transition effect to the next frame
struct PresentationFrame {
PresentationFrame() = default;
~PresentationFrame()
{
qDeleteAll(videoWidgets);
}
PresentationFrame(const PresentationFrame &) = delete;
PresentationFrame &operator=(const PresentationFrame &) = delete;
void recalcGeometry(int width, int height, float screenRatio)
{
// calculate frame geometry keeping constant aspect ratio
float pageRatio = page->ratio();
int pageWidth = width, pageHeight = height;
if (pageRatio > screenRatio) {
pageWidth = (int)((float)pageHeight / pageRatio);
} else {
pageHeight = (int)((float)pageWidth * pageRatio);
}
geometry.setRect((width - pageWidth) / 2, (height - pageHeight) / 2, pageWidth, pageHeight);
for (VideoWidget *vw : std::as_const(videoWidgets)) {
const Okular::NormalizedRect r = vw->normGeometry();
QRect vwgeom = r.geometry(geometry.width(), geometry.height());
vw->resize(vwgeom.size());
vw->move(geometry.topLeft() + vwgeom.topLeft());
}
}
const Okular::Page *page;
QRect geometry;
QHash<Okular::Movie *, VideoWidget *> videoWidgets;
std::vector<SmoothPath> drawings;
};
// a custom QToolBar that basically does not propagate the event if the widget
// background is not automatically filled
class PresentationToolBar : public QToolBar
{
Q_OBJECT
public:
explicit PresentationToolBar(QWidget *parent = Q_NULLPTR)
: QToolBar(parent)
{
}
protected:
void mousePressEvent(QMouseEvent *e) override
{
QToolBar::mousePressEvent(e);
e->accept();
}
void mouseReleaseEvent(QMouseEvent *e) override
{
QToolBar::mouseReleaseEvent(e);
e->accept();
}
};
PresentationWidget::PresentationWidget(QWidget *parent, Okular::Document *doc, DrawingToolActions *drawingToolActions, KActionCollection *collection)
: QWidget(nullptr /* must be null, to have an independent widget */, Qt::FramelessWindowHint)
, m_pressedLink(nullptr)
, m_handCursor(false)
, m_drawingEngine(nullptr)
, m_screenInhibitCookie(0)
, m_sleepInhibitFd(-1)
, m_parentWidget(parent)
, m_document(doc)
, m_frameIndex(-1)
, m_topBar(nullptr)
, m_pagesEdit(nullptr)
, m_searchBar(nullptr)
, m_ac(collection)
, m_screenSelect(nullptr)
, m_isSetup(false)
, m_blockNotifications(false)
, m_inBlackScreenMode(false)
, m_showSummaryView(Okular::Settings::slidesShowSummary())
, m_advanceSlides(Okular::SettingsCore::slidesAdvance())
, m_goToPreviousPageOnRelease(false)
, m_goToNextPageOnRelease(false)
{
setAttribute(Qt::WA_DeleteOnClose);
setAttribute(Qt::WA_OpaquePaintEvent);
setObjectName(QStringLiteral("presentationWidget"));
QString caption = doc->metaData(QStringLiteral("DocumentTitle")).toString();
if (caption.trimmed().isEmpty()) {
caption = doc->currentDocument().fileName();
}
caption = i18nc("[document title/filename] – Presentation", "%1 – Presentation", caption);
setWindowTitle(caption);
m_width = -1;
// create top toolbar
m_topBar = new PresentationToolBar(this);
m_topBar->setObjectName(QStringLiteral("presentationBar"));
m_topBar->setMovable(false);
m_topBar->layout()->setContentsMargins(0, 0, 0, 0);
m_topBar->addAction(QIcon::fromTheme(layoutDirection() == Qt::RightToLeft ? QStringLiteral("go-next") : QStringLiteral("go-previous")), i18n("Previous Page"), this, &PresentationWidget::slotPrevPage);
m_pagesEdit = new KLineEdit(m_topBar);
QSizePolicy sp = m_pagesEdit->sizePolicy();
sp.setHorizontalPolicy(QSizePolicy::Minimum);
m_pagesEdit->setSizePolicy(sp);
QFontMetrics fm(m_pagesEdit->font());
QStyleOptionFrame option;
option.initFrom(m_pagesEdit);
m_pagesEdit->setMaximumWidth(fm.horizontalAdvance(QString::number(m_document->pages())) + 2 * style()->pixelMetric(QStyle::PM_DefaultFrameWidth, &option, m_pagesEdit) +
4); // the 4 comes from 2*horizontalMargin, horizontalMargin being a define in qlineedit.cpp
QIntValidator *validator = new QIntValidator(1, m_document->pages(), m_pagesEdit);
m_pagesEdit->setValidator(validator);
m_topBar->addWidget(m_pagesEdit);
QLabel *pagesLabel = new QLabel(m_topBar);
pagesLabel->setText(QLatin1String(" / ") + QString::number(m_document->pages()) + QLatin1String(" "));
m_topBar->addWidget(pagesLabel);
connect(m_pagesEdit, &QLineEdit::returnPressed, this, &PresentationWidget::slotPageChanged);
m_topBar->addAction(QIcon::fromTheme(layoutDirection() == Qt::RightToLeft ? QStringLiteral("go-previous") : QStringLiteral("go-next")), i18n("Next Page"), this, &PresentationWidget::slotNextPage);
m_topBar->addSeparator();
QAction *playPauseAct = collection->action(QStringLiteral("presentation_play_pause"));
playPauseAct->setEnabled(true);
connect(playPauseAct, &QAction::triggered, this, &PresentationWidget::slotTogglePlayPause);
m_topBar->addAction(playPauseAct);
addAction(playPauseAct);
m_topBar->addSeparator();
const QList<QAction *> actionsList = drawingToolActions->actions();
for (QAction *action : actionsList) {
action->setEnabled(true);
m_topBar->addAction(action);
addAction(action);
}
connect(drawingToolActions, &DrawingToolActions::changeEngine, this, &PresentationWidget::slotChangeDrawingToolEngine);
connect(drawingToolActions, &DrawingToolActions::actionsRecreated, this, &PresentationWidget::slotAddDrawingToolActions);
QAction *eraseDrawingAct = collection->action(QStringLiteral("presentation_erase_drawings"));
eraseDrawingAct->setEnabled(true);
connect(eraseDrawingAct, &QAction::triggered, this, &PresentationWidget::clearDrawings);
m_topBar->addAction(eraseDrawingAct);
addAction(eraseDrawingAct);
const int screenCount = QApplication::screens().count();
if (screenCount > 1) {
m_topBar->addSeparator();
m_screenSelect = new KSelectAction(QIcon::fromTheme(QStringLiteral("video-display")), i18n("Switch Screen"), m_topBar);
m_screenSelect->setToolBarMode(KSelectAction::MenuMode);
m_screenSelect->setToolButtonPopupMode(QToolButton::InstantPopup);
m_topBar->addAction(m_screenSelect);
for (int i = 0; i < screenCount; ++i) {
QAction *act = m_screenSelect->addAction(i18nc("%1 is the screen number (0, 1, ...)", "Screen %1", i));
act->setData(QVariant::fromValue(i));
}
}
QWidget *spacer = new QWidget(m_topBar);
spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::MinimumExpanding);
m_topBar->addWidget(spacer);
m_topBar->addAction(QIcon::fromTheme(QStringLiteral("application-exit")), i18n("Exit Presentation Mode"), this, &PresentationWidget::close);
m_topBar->setAutoFillBackground(true);
showTopBar(false);
// change topbar background color
QPalette p = m_topBar->palette();
p.setColor(QPalette::Active, QPalette::Button, Qt::gray);
p.setColor(QPalette::Active, QPalette::Window, Qt::darkGray);
m_topBar->setPalette(p);
// Grab swipe gestures to change pages
grabGesture(Qt::SwipeGesture);
// misc stuff
setMouseTracking(true);
setContextMenuPolicy(Qt::PreventContextMenu);
m_transitionTimer = new QTimer(this);
m_transitionTimer->setSingleShot(true);
connect(m_transitionTimer, &QTimer::timeout, this, &PresentationWidget::slotTransitionStep);
m_overlayHideTimer = new QTimer(this);
m_overlayHideTimer->setSingleShot(true);
connect(m_overlayHideTimer, &QTimer::timeout, this, &PresentationWidget::slotHideOverlay);
m_nextPageTimer = new QTimer(this);
m_nextPageTimer->setSingleShot(true);
connect(m_nextPageTimer, &QTimer::timeout, this, &PresentationWidget::slotNextPage);
setPlayPauseIcon();
connect(m_document, &Okular::Document::processMovieAction, this, &PresentationWidget::slotProcessMovieAction);
connect(m_document, &Okular::Document::processRenditionAction, this, &PresentationWidget::slotProcessRenditionAction);
// handle cursor appearance as specified in configuration
if (Okular::Settings::slidesCursor() == Okular::Settings::EnumSlidesCursor::HiddenDelay) {
KCursor::setAutoHideCursor(this, true);
KCursor::setHideCursorDelay(3000);
} else if (Okular::Settings::slidesCursor() == Okular::Settings::EnumSlidesCursor::Hidden) {
setCursor(QCursor(Qt::BlankCursor));
}
setupActions();
// inhibit power management
inhibitPowerManagement();
QTimer::singleShot(0, this, &PresentationWidget::slotDelayedEvents);
// setFocus() so KCursor::setAutoHideCursor() goes into effect if it's enabled
setFocus(Qt::OtherFocusReason);
// Catch TabletEnterProximity and TabletLeaveProximity events from the QApplication
qApp->installEventFilter(this);
}
PresentationWidget::~PresentationWidget()
{
// allow power management saver again
allowPowerManagement();
// stop the audio playbacks
Okular::AudioPlayer::instance()->stopPlaybacks();
// remove our highlights
if (m_searchBar) {
m_document->resetSearch(PRESENTATION_SEARCH_ID);
}
// remove this widget from document observer
m_document->removeObserver(this);
const QList<QAction *> actionsList = actions();
for (QAction *action : actionsList) {
action->setChecked(false);
action->setEnabled(false);
}
delete m_drawingEngine;
// delete frames
qDeleteAll(m_frames);
qApp->removeEventFilter(this);
}
void PresentationWidget::notifySetup(const QVector<Okular::Page *> &pageSet, int setupFlags)
{
// same document, nothing to change - here we assume the document sets up
// us with the whole document set as first notifySetup()
if (!(setupFlags & Okular::DocumentObserver::DocumentChanged)) {
return;
}
// delete previous frames (if any (shouldn't be))
qDeleteAll(m_frames);
if (!m_frames.isEmpty()) {
qCWarning(OkularUiDebug) << "Frames setup changed while a Presentation is in progress.";
}
m_frames.clear();
// create the new frames
float screenRatio = (float)m_height / (float)m_width;
for (const Okular::Page *page : pageSet) {
PresentationFrame *frame = new PresentationFrame();
frame->page = page;
const QList<Okular::Annotation *> annotations = page->annotations();
for (Okular::Annotation *a : annotations) {
if (a->subType() == Okular::Annotation::AMovie) {
Okular::MovieAnnotation *movieAnn = static_cast<Okular::MovieAnnotation *>(a);
VideoWidget *vw = new VideoWidget(movieAnn, movieAnn->movie(), m_document, this);
frame->videoWidgets.insert(movieAnn->movie(), vw);
vw->pageInitialized();
} else if (a->subType() == Okular::Annotation::ARichMedia) {
Okular::RichMediaAnnotation *richMediaAnn = static_cast<Okular::RichMediaAnnotation *>(a);
if (richMediaAnn->movie()) {
VideoWidget *vw = new VideoWidget(richMediaAnn, richMediaAnn->movie(), m_document, this);
frame->videoWidgets.insert(richMediaAnn->movie(), vw);
vw->pageInitialized();
}
} else if (a->subType() == Okular::Annotation::AScreen) {
const Okular::ScreenAnnotation *screenAnn = static_cast<Okular::ScreenAnnotation *>(a);
Okular::Movie *movie = GuiUtils::renditionMovieFromScreenAnnotation(screenAnn);
if (movie) {
VideoWidget *vw = new VideoWidget(screenAnn, movie, m_document, this);
frame->videoWidgets.insert(movie, vw);
vw->pageInitialized();
}
}
}
frame->recalcGeometry(m_width, m_height, screenRatio);
// add the frame to the vector
m_frames.push_back(frame);
}
// get metadata from the document
m_metaStrings.clear();
const Okular::DocumentInfo info = m_document->documentInfo(QSet<Okular::DocumentInfo::Key>() << Okular::DocumentInfo::Title << Okular::DocumentInfo::Author);
if (!info.get(Okular::DocumentInfo::Title).isNull()) {
m_metaStrings += i18n("Title: %1", info.get(Okular::DocumentInfo::Title));
}
if (!info.get(Okular::DocumentInfo::Author).isNull()) {
m_metaStrings += i18n("Author: %1", info.get(Okular::DocumentInfo::Author));
}
m_metaStrings += i18n("Pages: %1", m_document->pages());
m_metaStrings += i18n("Click to begin");
m_isSetup = true;
}
void PresentationWidget::notifyViewportChanged(bool /*smoothMove*/)
{
// display the current page
changePage(m_document->viewport().pageNumber);
// auto advance to the next page if set
startAutoChangeTimer();
}
void PresentationWidget::notifyPageChanged(int pageNumber, int changedFlags)
{
// if we are blocking the notifications, do nothing
if (m_blockNotifications) {
return;
}
// check if it's the last requested pixmap. if so update the widget.
if ((changedFlags & (DocumentObserver::Pixmap | DocumentObserver::Annotations | DocumentObserver::Highlights)) && pageNumber == m_frameIndex) {
generatePage(changedFlags & (DocumentObserver::Annotations | DocumentObserver::Highlights));
}
}
void PresentationWidget::notifyCurrentPageChanged(int previousPage, int currentPage)
{
if (previousPage != -1) {
// stop video playback
for (VideoWidget *vw : std::as_const(m_frames[previousPage]->videoWidgets)) {
vw->stop();
vw->pageLeft();
}
// stop audio playback, if any
Okular::AudioPlayer::instance()->stopPlaybacks();
// perform the page closing action, if any
if (m_document->page(previousPage)->pageAction(Okular::Page::Closing)) {
m_document->processAction(m_document->page(previousPage)->pageAction(Okular::Page::Closing));
}
// perform the additional actions of the page's annotations, if any
const QList<Okular::Annotation *> annotationsList = m_document->page(previousPage)->annotations();
for (const Okular::Annotation *annotation : annotationsList) {
Okular::Action *action = nullptr;
if (annotation->subType() == Okular::Annotation::AScreen) {
action = static_cast<const Okular::ScreenAnnotation *>(annotation)->additionalAction(Okular::Annotation::PageClosing);
} else if (annotation->subType() == Okular::Annotation::AWidget) {
action = static_cast<const Okular::WidgetAnnotation *>(annotation)->additionalAction(Okular::Annotation::PageClosing);
}
if (action) {
m_document->processAction(action);
}
}
}
if (currentPage != -1) {
m_frameIndex = currentPage;
// check if pixmap exists or else request it
PresentationFrame *frame = m_frames[m_frameIndex];
int pixW = frame->geometry.width();
int pixH = frame->geometry.height();
bool signalsBlocked = m_pagesEdit->signalsBlocked();
m_pagesEdit->blockSignals(true);
m_pagesEdit->setText(QString::number(m_frameIndex + 1));
m_pagesEdit->blockSignals(signalsBlocked);
// if pixmap not inside the Okular::Page we request it and wait for
// notifyPixmapChanged call or else we can proceed to pixmap generation
if (!frame->page->hasPixmap(this, ceil(pixW * devicePixelRatioF()), ceil(pixH * devicePixelRatioF()))) {
requestPixmaps();
} else {
// make the background pixmap
generatePage();
}
// perform the page opening action, if any
if (m_document->page(m_frameIndex)->pageAction(Okular::Page::Opening)) {
m_document->processAction(m_document->page(m_frameIndex)->pageAction(Okular::Page::Opening));
}
// perform the additional actions of the page's annotations, if any
const QList<Okular::Annotation *> annotationsList = m_document->page(m_frameIndex)->annotations();
for (const Okular::Annotation *annotation : annotationsList) {
Okular::Action *action = nullptr;
if (annotation->subType() == Okular::Annotation::AScreen) {
action = static_cast<const Okular::ScreenAnnotation *>(annotation)->additionalAction(Okular::Annotation::PageOpening);
} else if (annotation->subType() == Okular::Annotation::AWidget) {
action = static_cast<const Okular::WidgetAnnotation *>(annotation)->additionalAction(Okular::Annotation::PageOpening);
}
if (action) {
m_document->processAction(action);
}
}
// start autoplay video playback
for (VideoWidget *vw : std::as_const(m_frames[m_frameIndex]->videoWidgets)) {
vw->pageEntered();
}
}
}
bool PresentationWidget::canUnloadPixmap(int pageNumber) const
{
if (Okular::SettingsCore::memoryLevel() == Okular::SettingsCore::EnumMemoryLevel::Low || Okular::SettingsCore::memoryLevel() == Okular::SettingsCore::EnumMemoryLevel::Normal) {
// can unload all pixmaps except for the currently visible one
return pageNumber != m_frameIndex;
} else {
// can unload all pixmaps except for the currently visible one, previous and next
return qAbs(pageNumber - m_frameIndex) <= 1;
}
}
void PresentationWidget::setupActions()
{
addAction(m_ac->action(QStringLiteral("first_page")));
addAction(m_ac->action(QStringLiteral("last_page")));
addAction(m_ac->action(KStandardAction::name(KStandardAction::Prior)));
addAction(m_ac->action(KStandardAction::name(KStandardAction::Next)));
addAction(m_ac->action(KStandardAction::name(KStandardAction::DocumentBack)));
addAction(m_ac->action(KStandardAction::name(KStandardAction::DocumentForward)));
QAction *action = m_ac->action(QStringLiteral("switch_blackscreen_mode"));
connect(action, &QAction::toggled, this, &PresentationWidget::toggleBlackScreenMode);
action->setEnabled(true);
addAction(action);
}
void PresentationWidget::setPlayPauseIcon()
{
QAction *playPauseAction = m_ac->action(QStringLiteral("presentation_play_pause"));
if (m_nextPageTimer->isActive()) {
playPauseAction->setIcon(QIcon::fromTheme(QStringLiteral("media-playback-pause")));
playPauseAction->setToolTip(i18nc("For Presentation", "Pause"));
} else {
playPauseAction->setIcon(QIcon::fromTheme(QStringLiteral("media-playback-start")));
playPauseAction->setToolTip(i18nc("For Presentation", "Play"));
}
}
bool PresentationWidget::eventFilter(QObject *o, QEvent *e)
{
if (o == qApp) {
if (e->type() == QTabletEvent::TabletEnterProximity) {
setCursor(QCursor(Qt::CrossCursor));
} else if (e->type() == QTabletEvent::TabletLeaveProximity) {
setCursor(QCursor(Okular::Settings::slidesCursor() == Okular::Settings::EnumSlidesCursor::Hidden ? Qt::BlankCursor : Qt::ArrowCursor));
if (Okular::Settings::slidesCursor() == Okular::Settings::EnumSlidesCursor::HiddenDelay) {
// Trick KCursor to hide the cursor if needed by sending an "unknown" key press event
// Send also the key release to make the world happy even it's probably not needed
QKeyEvent kp(QEvent::KeyPress, 0, Qt::NoModifier);
qApp->sendEvent(this, &kp);
QKeyEvent kr(QEvent::KeyRelease, 0, Qt::NoModifier);
qApp->sendEvent(this, &kr);
}
}
}
return false;
}
// <widget events>
bool PresentationWidget::event(QEvent *e)
{
if (e->type() == QEvent::DevicePixelRatioChange) {
invalidatePixmaps();
return QWidget::event(e);
}
if (e->type() == QEvent::Gesture) {
return gestureEvent(static_cast<QGestureEvent *>(e));
}
if (e->type() == QEvent::ToolTip) {
QHelpEvent *he = (QHelpEvent *)e;
QRect r;
const Okular::Action *link = getLink(he->pos(), &r);
if (link) {
QString tip = link->actionTip();
if (!tip.isEmpty()) {
QToolTip::showText(he->globalPos(), tip, this, r);
}
}
e->accept();
return true;
} else {
// do not stop the event
return QWidget::event(e);
}
}
bool PresentationWidget::gestureEvent(QGestureEvent *event)
{
// Swiping left or right on a touch screen will go to the previous or next slide, respectively.
// The precise gesture is the standard Qt swipe: with three(!) fingers.
if (QGesture *swipe = event->gesture(Qt::SwipeGesture)) {
QSwipeGesture *swipeEvent = static_cast<QSwipeGesture *>(swipe);
if (swipeEvent->state() == Qt::GestureFinished) {
if (swipeEvent->horizontalDirection() == QSwipeGesture::Left) {
slotPrevPage();
event->accept();
return true;
}
if (swipeEvent->horizontalDirection() == QSwipeGesture::Right) {
slotNextPage();
event->accept();
return true;
}
}
}
return false;
}
void PresentationWidget::keyPressEvent(QKeyEvent *e)
{
if (!m_isSetup) {
return;
}
switch (e->key()) {
case Qt::Key_Left:
case Qt::Key_Backspace:
case Qt::Key_PageUp:
case Qt::Key_Up:
slotPrevPage();
break;
case Qt::Key_Right:
case Qt::Key_Space:
case Qt::Key_PageDown:
case Qt::Key_Down:
slotNextPage();
break;
case Qt::Key_Home:
slotFirstPage();
break;
case Qt::Key_End:
slotLastPage();
break;
case Qt::Key_Escape:
if (!m_topBar->isHidden()) {
showTopBar(false);
} else {
close();
}
break;
}
}
void PresentationWidget::wheelEvent(QWheelEvent *e)
{
if (!m_isSetup) {
return;
}
// performance note: don't remove the clipping
int div = e->angleDelta().y() / 120;
if (div > 0) {
if (div > 3) {
div = 3;
}
while (div--) {
slotPrevPage();
}
} else if (div < 0) {
if (div < -3) {
div = -3;
}
while (div++) {
slotNextPage();
}
}
}
void PresentationWidget::mousePressEvent(QMouseEvent *e)
{
if (!m_isSetup) {
return;
}
if (m_drawingEngine) {
QRect r = routeMouseDrawingEvent(e);
if (r.isValid()) {
m_drawingRect |= r.translated(m_frames[m_frameIndex]->geometry.topLeft());
update(m_drawingRect);
}
return;
}
// pressing left button
if (e->button() == Qt::LeftButton) {
// if pressing on a link, skip other checks
if ((m_pressedLink = getLink(e->position()))) {
return;
}
const Okular::Annotation *annotation = getAnnotation(e->position());
if (annotation) {
if (annotation->subType() == Okular::Annotation::AMovie) {
const Okular::MovieAnnotation *movieAnnotation = static_cast<const Okular::MovieAnnotation *>(annotation);
VideoWidget *vw = m_frames[m_frameIndex]->videoWidgets.value(movieAnnotation->movie());
vw->show();
vw->play();
return;
} else if (annotation->subType() == Okular::Annotation::ARichMedia) {
const Okular::RichMediaAnnotation *richMediaAnnotation = static_cast<const Okular::RichMediaAnnotation *>(annotation);
VideoWidget *vw = m_frames[m_frameIndex]->videoWidgets.value(richMediaAnnotation->movie());
vw->show();
vw->play();
return;
} else if (annotation->subType() == Okular::Annotation::AScreen) {
m_document->processAction(static_cast<const Okular::ScreenAnnotation *>(annotation)->action());
return;
}
}
// handle clicking on top-right overlay
if (!(Okular::Settings::slidesCursor() == Okular::Settings::EnumSlidesCursor::Hidden) && m_overlayGeometry.contains(e->pos())) {
overlayClick(e->pos());
return;
}
// Actual mouse press events always lead to the next page page
if (e->source() == Qt::MouseEventNotSynthesized) {
m_goToNextPageOnRelease = true;
}
// Touch events may lead to the previous or next page
else if (Okular::Settings::slidesTapNavigation() != Okular::Settings::EnumSlidesTapNavigation::Disabled) {
switch (Okular::Settings::slidesTapNavigation()) {
case Okular::Settings::EnumSlidesTapNavigation::ForwardBackward: {
if (e->position().x() < (qreal(geometry().width()) / 2)) {
m_goToPreviousPageOnRelease = true;
} else {
m_goToNextPageOnRelease = true;
}
break;
}
case Okular::Settings::EnumSlidesTapNavigation::Forward: {
m_goToNextPageOnRelease = true;
break;
}
case Okular::Settings::EnumSlidesTapNavigation::Disabled: {
// Do Nothing
}
}
}
}
// pressing forward button
else if (e->button() == Qt::ForwardButton) {
m_goToNextPageOnRelease = true;
}
// pressing right or backward button
else if (e->button() == Qt::RightButton || e->button() == Qt::BackButton) {
m_goToPreviousPageOnRelease = true;
}
}
void PresentationWidget::mouseReleaseEvent(QMouseEvent *e)
{
if (m_drawingEngine) {
routeMouseDrawingEvent(e);
return;
}
// if releasing on the same link we pressed over, execute it
if (m_pressedLink && e->button() == Qt::LeftButton) {
const Okular::Action *link = getLink(e->position());
if (link == m_pressedLink) {
m_document->processAction(link);
}
m_pressedLink = nullptr;
}
if (m_goToPreviousPageOnRelease) {
slotPrevPage();
m_goToPreviousPageOnRelease = false;
}
if (m_goToNextPageOnRelease) {
slotNextPage();
m_goToNextPageOnRelease = false;
}
}
void PresentationWidget::mouseMoveEvent(QMouseEvent *e)
{
// safety check
if (!m_isSetup) {
return;
}
// update cursor and tooltip if hovering a link
if (!m_drawingEngine && Okular::Settings::slidesCursor() != Okular::Settings::EnumSlidesCursor::Hidden) {
testCursorOnLink(e->position());
}
if (!m_topBar->isHidden()) {
// hide a shown bar when exiting the area
if (e->position().y() > (m_topBar->height() + 1)) {
showTopBar(false);
setFocus(Qt::OtherFocusReason);
}
} else {
if (m_drawingEngine && e->buttons() != Qt::NoButton) {
QRect r = routeMouseDrawingEvent(e);
if (r.isValid()) {
m_drawingRect |= r.translated(m_frames[m_frameIndex]->geometry.topLeft());
update(m_drawingRect);
}
} else {
// show the bar if reaching top 2 pixels
if (e->position().y() <= 1) {
showTopBar(true);
} else if ((QApplication::mouseButtons() & Qt::LeftButton) && m_overlayGeometry.contains(e->pos())) {
// handle "dragging the wheel" if clicking on its geometry
overlayClick(e->pos());
}
}
}
}
void PresentationWidget::paintEvent(QPaintEvent *pe)
{
qreal dpr = devicePixelRatioF();
if (m_inBlackScreenMode) {
QPainter painter(this);
painter.fillRect(pe->rect(), Qt::black);
return;
}
if (!m_isSetup) {
m_width = width();
m_height = height();
connect(m_document, &Okular::Document::linkFind, this, &PresentationWidget::slotFind);
// register this observer in document. events will come immediately
m_document->addObserver(this);
// show summary if requested
if (Okular::Settings::slidesShowSummary()) {
generatePage();
}
}
// check painting rect consistency
QRect paintRect = pe->rect().intersected(QRect(QPoint(0, 0), geometry().size()));
if (paintRect.isNull()) {
return;
}
if (m_lastRenderedPixmap.isNull()) {
QPainter painter(this);
painter.fillRect(pe->rect(), Okular::Settings::slidesBackgroundColor());
return;
}
// blit the pixmap to the screen
QPainter painter(this);
for (const QRect &r : pe->region()) {
if (!r.isValid()) {
continue;
}
#ifdef ENABLE_PROGRESS_OVERLAY
const QRect dR(QRectF(r.x() * dpr, r.y() * dpr, r.width() * dpr, r.height() * dpr).toAlignedRect());
if (Okular::Settings::slidesShowProgress() && r.intersects(m_overlayGeometry)) {
// backbuffer the overlay operation
QPixmap backPixmap(dR.size());
backPixmap.setDevicePixelRatio(dpr);
QPainter pixPainter(&backPixmap);
// first draw the background on the backbuffer
pixPainter.drawPixmap(QPoint(0, 0), m_lastRenderedPixmap, dR);
// then blend the overlay (a piece of) over the background
QRect ovr = m_overlayGeometry.intersected(r);
pixPainter.drawPixmap((ovr.left() - r.left()), (ovr.top() - r.top()), m_lastRenderedOverlay, (ovr.left() - m_overlayGeometry.left()) * dpr, (ovr.top() - m_overlayGeometry.top()) * dpr, ovr.width() * dpr, ovr.height() * dpr);
// finally blit the pixmap to the screen
pixPainter.end();
const QRect backPixmapRect = backPixmap.rect();
const QRect dBackPixmapRect(QRectF(backPixmapRect.x() * dpr, backPixmapRect.y() * dpr, backPixmapRect.width() * dpr, backPixmapRect.height() * dpr).toAlignedRect());
painter.drawPixmap(r.topLeft(), backPixmap, dBackPixmapRect);
} else {
#endif
// copy the rendered pixmap to the screen
painter.drawPixmap(r.topLeft(), m_lastRenderedPixmap, dR);
}
}
// paint drawings
if (m_frameIndex != -1) {
painter.save();
const QRect &geom = m_frames[m_frameIndex]->geometry;
const QSize pmSize(geom.width() * dpr, geom.height() * dpr);
QPixmap pm(pmSize);
pm.fill(Qt::transparent);
QPainter pmPainter(&pm);
pm.setDevicePixelRatio(dpr);
pmPainter.setRenderHints(QPainter::Antialiasing);
// Paint old paths
for (const SmoothPath &drawing : m_frames[m_frameIndex]->drawings) {
drawing.paint(&pmPainter, pmSize.width(), pmSize.height());
}
// Paint the path that is currently being drawn by the user
if (m_drawingEngine && m_drawingRect.intersects(pe->rect())) {
m_drawingEngine->paint(&pmPainter, pmSize.width(), pmSize.height(), m_drawingRect.intersected(pe->rect()));
}
painter.setRenderHints(QPainter::Antialiasing);
painter.drawPixmap(geom.topLeft(), pm);
painter.restore();
}
painter.end();
}
void PresentationWidget::resizeEvent(QResizeEvent *re)
{
m_width = width();
m_height = height();
// if by chance the new size equals the old, do not invalidate pixmaps and such..
if (size() == re->oldSize()) {
return;
}
// BEGIN Top toolbar
// tool bar height in pixels, make it large enough to hold the text fields with the page numbers
const int toolBarHeight = m_pagesEdit->height() * 1.5;
m_topBar->setGeometry(0, 0, width(), toolBarHeight);
m_topBar->setIconSize(QSize(toolBarHeight * 0.75, toolBarHeight * 0.75));
// END Top toolbar
// BEGIN Content area
// update the frames
const float screenRatio = (float)m_height / (float)m_width;
for (PresentationFrame *frame : std::as_const(m_frames)) {
frame->recalcGeometry(m_width, m_height, screenRatio);
}
invalidatePixmaps();
if (m_transitionTimer->isActive()) {
m_transitionTimer->stop();
}
generatePage(true /* no transitions */);
// END Content area
}
void PresentationWidget::enterEvent(QEnterEvent *e)
{
if (!m_topBar->isHidden()) {
// This can happen when we exited the widget via a "tooltip" and the tooltip disappears
if (e->position().y() > (m_topBar->height() + 1)) {
showTopBar(false);
}
}
QWidget::enterEvent(e);
}
void PresentationWidget::leaveEvent(QEvent *e)
{
Q_UNUSED(e)
if (!m_topBar->isHidden()) {
if (QToolTip::isVisible()) {
// make sure we're not hovering over the tooltip
// because the world is sad, this works differently on Wayland and X11
// on X11 the widget under the cursor is the tooltip window
// on wayland it's the button generating the tooltip (why? no idea)
const QWidget *widgetUnderCursor = qApp->widgetAt(QCursor::pos());
if (widgetUnderCursor) {
const QWidget *widgetUnderCursorWindow = widgetUnderCursor->window();
if (widgetUnderCursorWindow == this) {
qDebug() << "Wayland";
return;
} else {
const QWidget *widgetUnderCursorParentWindow = widgetUnderCursorWindow->parentWidget() ? widgetUnderCursorWindow->parentWidget()->window() : nullptr;
if (widgetUnderCursorParentWindow == this) {
qDebug() << "X11";
return;
}
}
}
}
showTopBar(false);
}
}
// </widget events>
const void *PresentationWidget::getObjectRect(Okular::ObjectRect::ObjectType type, QPointF point, QRect *geometry) const
{
// no links on invalid pages
if (geometry && !geometry->isNull()) {
geometry->setRect(0, 0, 0, 0);
}
if (m_frameIndex < 0 || m_frameIndex >= (int)m_frames.size()) {
return nullptr;
}
// get frame, page and geometry