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presentationwidget.cpp
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/***************************************************************************
* Copyright (C) 2004 by Enrico Ros <[email protected]> *
* *
* 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 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#include "presentationwidget.h"
// qt/kde includes
#include <qloggingcategory.h>
#include <QDBusConnection>
#include <QDBusMessage>
#include <QDBusReply>
#include <qevent.h>
#include <qfontmetrics.h>
#include <QIcon>
#include <qtimer.h>
#include <qimage.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qpainter.h>
#include <qstyle.h>
#include <qstyleoption.h>
#include <qtooltip.h>
#include <qvalidator.h>
#include <qapplication.h>
#include <qdesktopwidget.h>
#include <QGestureEvent>
#include <kcursor.h>
#include <krandom.h>
#include <qtoolbar.h>
#include <qaction.h>
#include <kactioncollection.h>
#include <klineedit.h>
#include <KLocalizedString>
#include <kiconloader.h>
#include <kmessagebox.h>
#include <kselectaction.h>
#include <QDialog>
#ifdef Q_OS_LINUX
#include <QDBusUnixFileDescriptor>
#include <unistd.h> // For ::close() for sleep inhibition
#endif
// system includes
#include <stdlib.h>
#include <math.h>
// local includes
#include "annotationtools.h"
#include "debug_ui.h"
#include "drawingtoolactions.h"
#include "guiutils.h"
#include "pagepainter.h"
#include "presentationsearchbar.h"
#include "priorities.h"
#include "videowidget.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 "settings.h"
#include "settings_core.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()
{
qDeleteAll( videoWidgets );
}
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 );
Q_FOREACH ( VideoWidget *vw, 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;
QLinkedList< 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:
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_goToNextPageOnRelease( false )
{
Q_UNUSED( parent )
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;
m_screen = -2;
// create top toolbar
m_topBar = new PresentationToolBar( this );
m_topBar->setObjectName( QStringLiteral( "presentationBar" ) );
m_topBar->setMovable( false );
m_topBar->layout()->setMargin(0);
m_topBar->addAction( QIcon::fromTheme( layoutDirection() == Qt::RightToLeft ? QStringLiteral("go-next") : QStringLiteral("go-previous") ), i18n( "Previous Page" ), this, SLOT(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.width( 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, SLOT(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 );
setPlayPauseIcon();
addAction( playPauseAct );
m_topBar->addSeparator();
QAction *eraseDrawingAct = collection->action( QStringLiteral("presentation_erase_drawings") );
eraseDrawingAct->setEnabled( true );
connect(eraseDrawingAct, &QAction::triggered, this, &PresentationWidget::clearDrawings);
m_topBar->addAction( eraseDrawingAct );
addAction( eraseDrawingAct );
foreach(QAction *action, drawingToolActions->actions())
{
action->setEnabled( true );
m_topBar->addAction( action );
addAction( action );
}
connect( drawingToolActions, &DrawingToolActions::changeEngine, this, &PresentationWidget::slotChangeDrawingToolEngine );
connect( drawingToolActions, &DrawingToolActions::actionsRecreated, this, &PresentationWidget::slotAddDrawingToolActions );
QDesktopWidget *desktop = QApplication::desktop();
if ( desktop->numScreens() > 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 );
const int screenCount = desktop->numScreens();
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( qVariantFromValue( 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, SLOT(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::Background, 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);
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();
show();
QTimer::singleShot( 0, this, &PresentationWidget::slotDelayedEvents );
// setFocus() so KCursor::setAutoHideCursor() goes into effect if it's enabled
setFocus( Qt::OtherFocusReason );
}
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 );
foreach( QAction *action, m_topBar->actions() )
{
action->setChecked( false );
action->setEnabled( false );
}
delete m_drawingEngine;
// delete frames
QVector< PresentationFrame * >::iterator fIt = m_frames.begin(), fEnd = m_frames.end();
for ( ; fIt != fEnd; ++fIt )
delete *fIt;
}
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))
QVector< PresentationFrame * >::iterator fIt = m_frames.begin(), fEnd = m_frames.end();
for ( ; fIt != fEnd; ++fIt )
delete *fIt;
if ( !m_frames.isEmpty() )
qCWarning(OkularUiDebug) << "Frames setup changed while a Presentation is in progress.";
m_frames.clear();
// create the new frames
QVector< Okular::Page * >::const_iterator setIt = pageSet.begin(), setEnd = pageSet.end();
float screenRatio = (float)m_height / (float)m_width;
for ( ; setIt != setEnd; ++setIt )
{
PresentationFrame * frame = new PresentationFrame();
frame->page = *setIt;
const QLinkedList< Okular::Annotation * > annotations = (*setIt)->annotations();
QLinkedList< Okular::Annotation * >::const_iterator aIt = annotations.begin(), aEnd = annotations.end();
for ( ; aIt != aEnd; ++aIt )
{
Okular::Annotation * a = *aIt;
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
Q_FOREACH ( VideoWidget *vw, 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
Q_FOREACH ( const Okular::Annotation *annotation, m_document->page( previousPage )->annotations() )
{
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 * qApp->devicePixelRatio()), ceil(pixH * qApp->devicePixelRatio()) ) )
{
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
Q_FOREACH ( const Okular::Annotation *annotation, m_document->page( m_frameIndex )->annotations() )
{
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
Q_FOREACH ( VideoWidget *vw, 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( QString::fromLocal8Bit(KStandardAction::name( KStandardAction::Prior ) ) ) );
addAction( m_ac->action( QString::fromLocal8Bit(KStandardAction::name( KStandardAction::Next ) ) ) );
addAction( m_ac->action( QString::fromLocal8Bit(KStandardAction::name( KStandardAction::DocumentBack ) ) ) );
addAction( m_ac->action( QString::fromLocal8Bit(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_advanceSlides )
{
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" ) );
}
}
// <widget events>
bool PresentationWidget::event( QEvent * 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->x(), he->y(), &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->delta() / 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->x(), e->y() ) ) )
return;
const Okular::Annotation *annotation = getAnnotation( e->x(), e->y() );
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;
}
m_goToNextPageOnRelease = true;
}
// pressing the "move forward" mouse button: unlike the left button this
// always means "show next page", so we unconditionally delegate to that
// action on mouse button press
else if ( e->button() == Qt::ForwardButton ) {
slotNextPage();
}
// pressing right or backward button
else if ( e->button() == Qt::RightButton || e->button() == Qt::BackButton )
slotPrevPage();
}
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->x(), e->y() );
if ( link == m_pressedLink )
m_document->processAction( link );
m_pressedLink = nullptr;
}
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->x(), e->y() );
if ( !m_topBar->isHidden() )
{
// hide a shown bar when exiting the area
if ( e->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->y() <= 1 )
showTopBar( true );
// handle "dragging the wheel" if clicking on its geometry
else if ( ( QApplication::mouseButtons() & Qt::LeftButton ) && m_overlayGeometry.contains( e->pos() ) )
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 consistancy
QRect r = pe->rect().intersected( QRect( QPoint( 0, 0 ), geometry().size() ) );
if ( r.isNull() )
return;
if ( m_lastRenderedPixmap.isNull() )
{
QPainter painter( this );
painter.fillRect( pe->rect(), Okular::Settings::slidesBackgroundColor() );
return;
}
// blit the pixmap to the screen
QVector<QRect> allRects = pe->region().rects();
uint numRects = allRects.count();
QPainter painter( this );
for ( uint i = 0; i < numRects; i++ )
{
const QRect & r = allRects[i];
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;
QPixmap pm( geom.size() );
pm.fill( Qt::transparent );
QPainter pmPainter( &pm );
pmPainter.setRenderHints( QPainter::Antialiasing );
foreach ( const SmoothPath &drawing, m_frames[ m_frameIndex ]->drawings )
drawing.paint( &pmPainter, geom.width(), geom.height() );
if ( m_drawingEngine && m_drawingRect.intersects( pe->rect() ) )
m_drawingEngine->paint( &pmPainter, geom.width(), geom.height(), m_drawingRect.intersected( pe->rect() ) );
painter.setRenderHints( QPainter::Antialiasing );
painter.drawPixmap( geom.topLeft() , pm );
painter.restore();
}
painter.end();
}
void PresentationWidget::resizeEvent( QResizeEvent *re )
{
// qCDebug(OkularUiDebug) << re->oldSize() << "=>" << re->size();
if ( re->oldSize() == QSize( -1, -1 ) )
return;
m_screen = QApplication::desktop()->screenNumber( this );
applyNewScreenSize( re->oldSize() );
}
void PresentationWidget::leaveEvent( QEvent * e )
{
Q_UNUSED( e )
if ( !m_topBar->isHidden() )
{
showTopBar( false );
}
}
// </widget events>
const void * PresentationWidget::getObjectRect( Okular::ObjectRect::ObjectType type, int x, int y, 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
const PresentationFrame * frame = m_frames[ m_frameIndex ];
const Okular::Page * page = frame->page;
const QRect & frameGeometry = frame->geometry;
// compute normalized x and y
double nx = (double)(x - frameGeometry.left()) / (double)frameGeometry.width();
double ny = (double)(y - frameGeometry.top()) / (double)frameGeometry.height();
// no links outside the pages
if ( nx < 0 || nx > 1 || ny < 0 || ny > 1 )
return nullptr;
// check if 1) there is an object and 2) it's a link
const QRect d = QApplication::desktop()->screenGeometry( m_screen );
const Okular::ObjectRect * object = page->objectRect( type, nx, ny, d.width(), d.height() );
if ( !object )
return nullptr;
// compute link geometry if destination rect present
if ( geometry )
{
*geometry = object->boundingRect( frameGeometry.width(), frameGeometry.height() );
geometry->translate( frameGeometry.left(), frameGeometry.top() );
}
// return the link pointer
return object->object();
}
const Okular::Action * PresentationWidget::getLink( int x, int y, QRect * geometry ) const
{
return reinterpret_cast<const Okular::Action*>( getObjectRect( Okular::ObjectRect::Action, x, y, geometry ) );
}
const Okular::Annotation * PresentationWidget::getAnnotation( int x, int y, QRect * geometry ) const
{
return reinterpret_cast<const Okular::Annotation*>( getObjectRect( Okular::ObjectRect::OAnnotation, x, y, geometry ) );
}
void PresentationWidget::testCursorOnLink( int x, int y )
{
const Okular::Action * link = getLink( x, y, nullptr );
const Okular::Annotation *annotation = getAnnotation( x, y, nullptr );
const bool needsHandCursor = ( ( link != nullptr ) ||
( ( annotation != nullptr ) && ( annotation->subType() == Okular::Annotation::AMovie ) ) ||
( ( annotation != nullptr ) && ( annotation->subType() == Okular::Annotation::ARichMedia ) ) ||
( ( annotation != nullptr ) && ( annotation->subType() == Okular::Annotation::AScreen ) && ( GuiUtils::renditionMovieFromScreenAnnotation( static_cast< const Okular::ScreenAnnotation * >( annotation ) ) != nullptr ) ) );
// only react on changes (in/out from a link)
if ( ( needsHandCursor && !m_handCursor ) || ( !needsHandCursor && m_handCursor ) )
{
// change cursor shape
m_handCursor = needsHandCursor;
setCursor( QCursor( m_handCursor ? Qt::PointingHandCursor : Qt::ArrowCursor ) );
}
}
void PresentationWidget::overlayClick( const QPoint & position )
{
// clicking the progress indicator
int xPos = position.x() - m_overlayGeometry.x() - m_overlayGeometry.width() / 2,
yPos = m_overlayGeometry.height() / 2 - position.y();
if ( !xPos && !yPos )
return;
// compute angle relative to indicator (note coord transformation)
float angle = 0.5 + 0.5 * atan2( (double)-xPos, (double)-yPos ) / M_PI;
int pageIndex = (int)( angle * ( m_frames.count() - 1 ) + 0.5 );
// go to selected page
changePage( pageIndex );
}
void PresentationWidget::changePage( int newPage )
{
if ( m_showSummaryView ) {
m_showSummaryView = false;
m_frameIndex = -1;
return;
}
if ( m_frameIndex == newPage )
return;
// switch to newPage