vlc | branch: master | Francois Cartegnie <fcvlc...@free.fr> | Thu Apr 4 23:20:42 2013 +0200| [c38081e5680bb6c35c65ea8de3dfbd7c4e484586] | committer: Francois Cartegnie
Qt: add events extender > http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=c38081e5680bb6c35c65ea8de3dfbd7c4e484586 --- modules/gui/qt4/Modules.am | 3 + modules/gui/qt4/util/events_extender.cpp | 144 ++++++++++++++++++++++++++++++ modules/gui/qt4/util/events_extender.hpp | 94 +++++++++++++++++++ 3 files changed, 241 insertions(+) diff --git a/modules/gui/qt4/Modules.am b/modules/gui/qt4/Modules.am index 30f1f59..3916b28 100644 --- a/modules/gui/qt4/Modules.am +++ b/modules/gui/qt4/Modules.am @@ -70,6 +70,7 @@ nodist_SOURCES_qt4 = \ util/input_slider.moc.cpp \ util/timetooltip.moc.cpp \ util/customwidgets.moc.cpp \ + util/events_extender.moc.cpp \ util/searchlineedit.moc.cpp \ util/qmenuview.moc.cpp \ util/qvlcapp.moc.cpp \ @@ -333,6 +334,7 @@ SOURCES_qt4 = qt4.cpp \ util/input_slider.cpp \ util/timetooltip.cpp \ util/customwidgets.cpp \ + util/events_extender.cpp \ util/searchlineedit.cpp \ util/registry.cpp \ util/qmenuview.cpp \ @@ -411,6 +413,7 @@ noinst_HEADERS = \ util/input_slider.hpp \ util/timetooltip.hpp \ util/customwidgets.hpp \ + util/events_extender.hpp \ util/searchlineedit.hpp \ util/qvlcframe.hpp \ util/qvlcapp.hpp \ diff --git a/modules/gui/qt4/util/events_extender.cpp b/modules/gui/qt4/util/events_extender.cpp new file mode 100644 index 0000000..b184941 --- /dev/null +++ b/modules/gui/qt4/util/events_extender.cpp @@ -0,0 +1,144 @@ +/***************************************************************************** + * events_extender.cpp: Events Extenders / Modifiers + **************************************************************************** + * Copyright (C) 2013 the VideoLAN team + * + * 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. + * + * 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. + *****************************************************************************/ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include "events_extender.hpp" + +#include <QTimer> +#include <QApplication> +#include <QMouseEvent> + +const QEvent::Type MouseEventExtenderFilter::MouseButtonLongPress = + (QEvent::Type)QEvent::registerEventType(); +const QEvent::Type MouseEventExtenderFilter::MouseButtonShortClick = + (QEvent::Type)QEvent::registerEventType(); +const QEvent::Type MouseEventExtenderFilter::MouseButtonLongClick = + (QEvent::Type)QEvent::registerEventType(); + +MouseEventExtenderFilter::ButtonState::ButtonState( QObject *parent, Qt::MouseButton b ) +{ + state = RELEASED; + button = b; + timer = new QTimer( parent ); + timer->setInterval( 2 * QApplication::doubleClickInterval() ); + timer->setSingleShot( true ); + timer->installEventFilter( parent ); +} + +MouseEventExtenderFilter::ButtonState::~ButtonState() +{ + delete timer; +} + +//! MouseEventExtenderFilter constructor +/*! +\param The QObject we're extending events. +*/ +MouseEventExtenderFilter::MouseEventExtenderFilter( QObject *parent ) : QObject( parent ) +{} + +MouseEventExtenderFilter::~MouseEventExtenderFilter() +{ + qDeleteAll( buttonsStates.begin(), buttonsStates.end() ); +} + +MouseEventExtenderFilter::ButtonState * MouseEventExtenderFilter::getState( Qt::MouseButton button ) +{ + foreach( ButtonState *bs, buttonsStates ) + if ( bs->button == button ) + return bs; + + ButtonState *bs = new ButtonState( this, button ); + buttonsStates << bs; + return bs; +} + +MouseEventExtenderFilter::ButtonState * MouseEventExtenderFilter::getStateByTimer( int id ) +{ + foreach( ButtonState *bs, buttonsStates ) + if ( bs->timer->timerId() == id ) + return bs; + return NULL; +} + +void MouseEventExtenderFilter::postEvent( QObject *obj, QEvent::Type type, ButtonState *bs ) const +{ + QApplication::postEvent( obj, + new QMouseEvent( type, bs->localPos, bs->button, bs->buttons, bs->modifiers ) ); +} + +bool MouseEventExtenderFilter::eventFilter( QObject *obj, QEvent *e ) +{ + ButtonState *bs; + QMouseEvent *mouseevent; + QTimerEvent *timerevent; + + switch ( e->type() ) + { + case QEvent::Timer: + timerevent = static_cast<QTimerEvent *>(e); + bs = getStateByTimer( timerevent->timerId() ); + if ( bs ) + { + killTimer( timerevent->timerId() ); + bs->state = ButtonState::LONGPRESSED; + postEvent( obj, MouseButtonLongPress, bs ); + } + break; + + case QEvent::MouseButtonPress: + mouseevent = static_cast<QMouseEvent *>(e); + bs = getState( mouseevent->button() ); + bs->state = ButtonState::PRESSED; + bs->localPos = mouseevent->pos(); + bs->buttons = mouseevent->buttons(); + bs->modifiers = mouseevent->modifiers(); + bs->timer->start(); + break; + + case QEvent::MouseButtonRelease: + mouseevent = static_cast<QMouseEvent *>(e); + bs = getState( mouseevent->button() ); + if ( bs->state == ButtonState::LONGPRESSED ) + postEvent( obj, MouseButtonLongClick, bs ); + else if ( bs->state == ButtonState::PRESSED ) + postEvent( obj, MouseButtonShortClick, bs ); + bs->state = ButtonState::RELEASED; + bs->timer->stop(); + break; + + case QEvent::Leave: + case QEvent::MouseButtonDblClick: + mouseevent = static_cast<QMouseEvent *>(e); + bs = getState( mouseevent->button() ); + bs->state = ButtonState::RELEASED; + bs->timer->stop(); + // ff + + default: + break; + } + + /* Pass requests to original handler */ + return parent()->eventFilter( obj, e ); +} diff --git a/modules/gui/qt4/util/events_extender.hpp b/modules/gui/qt4/util/events_extender.hpp new file mode 100644 index 0000000..3bae638 --- /dev/null +++ b/modules/gui/qt4/util/events_extender.hpp @@ -0,0 +1,94 @@ +/***************************************************************************** + * events_extender.hpp: Events Extenders / Modifiers + **************************************************************************** + * Copyright (C) 2013 the VideoLAN team + * + * 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. + * + * 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. + *****************************************************************************/ + +#ifndef EVENTS_EXTENDER_HPP +#define EVENTS_EXTENDER_HPP + +#include <QObject> +#include <QEvent> +#include <QList> +#include <QPoint> + +class QMouseEvent; +class QTimer; + +//! MouseEventExtenderFilter +/*! +Adds special QObject mouse events per button: LongPress, ShortClick +and LongClick. +Use by registering the extender as Object's event Filter. Will pass +back every original event to Object's filter. +*/ + +/* Note: The Extender being a QObject too, you can chain multiple extenders */ + +class MouseEventExtenderFilter : public QObject +{ + Q_OBJECT + +public: + //! MouseButtonLongPress Event. + /*! + Fired when the mouse has been pressed for longer than a single + click time. + */ + static const QEvent::Type MouseButtonLongPress; + //! MouseButtonShortClick Event. + /*! + Single mouse click event. Sent by extender to differenciate + from the Object's unmodified clicked() signal. + */ + static const QEvent::Type MouseButtonShortClick; + //! MouseButtonLongClick Event. + /*! + Single mouse long click event. Preceded by a LongPress Event. + */ + static const QEvent::Type MouseButtonLongClick; + MouseEventExtenderFilter( QObject *parent ); + ~MouseEventExtenderFilter(); + +protected: + bool eventFilter( QObject *, QEvent * ); + +private: + class ButtonState + { + public: + ButtonState( QObject *, Qt::MouseButton ); + ~ButtonState(); + enum + { + RELEASED, + PRESSED, + LONGPRESSED + } state; + QPoint localPos; + Qt::MouseButton button; + Qt::MouseButtons buttons; + Qt::KeyboardModifiers modifiers; + QTimer *timer; + }; + ButtonState * getState( Qt::MouseButton ); + ButtonState * getStateByTimer( int ); + void postEvent( QObject *, QEvent::Type, ButtonState * ) const; + QList<ButtonState *> buttonsStates; +}; + +#endif // EVENTS_EXTENDER_HPP _______________________________________________ vlc-commits mailing list vlc-commits@videolan.org http://mailman.videolan.org/listinfo/vlc-commits
