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Diffstat (limited to 'kdecore/kclipboard.cpp')
| -rw-r--r-- | kdecore/kclipboard.cpp | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/kdecore/kclipboard.cpp b/kdecore/kclipboard.cpp new file mode 100644 index 000000000..3a266c171 --- /dev/null +++ b/kdecore/kclipboard.cpp @@ -0,0 +1,199 @@ +/* This file is part of the KDE libraries + Copyright (C) 2002 Carsten Pfeiffer <pfeiffer@kde.org> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License version 2, as published by the Free Software Foundation. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#include <kapplication.h> +#include <kconfig.h> +#include <kglobal.h> + +#include "kclipboard.h" + +/* + * This class provides an automatic synchronization of the X11 Clipboard and Selection + * buffers. There are two configuration options in the kdeglobals configuration file, + * in the [General] section: + * - SynchronizeClipboardAndSelection - whenever the Selection changes, Clipboard is + * set to the same value. This can be also enabled in Klipper. + * - ClipboardSetSelection - whenever the Clipboard changes, Selection is set + * to the same value. This setting is only for die-hard fans of the old broken + * KDE1/2 behavior, which can potentionally lead to unexpected problems, + * and this setting therefore can be enabled only in the configuration file. + * + * Whenever reporting any bug only remotely related to clipboard, first make + * sure you can reproduce it when both these two options are turned off, + * especially the second one. + */ + +class KClipboardSynchronizer::MimeSource : public QMimeSource +{ +public: + MimeSource( const QMimeSource * src ) + : QMimeSource(), + m_formats( true ) // deep copies! + { + m_formats.setAutoDelete( true ); + m_data.setAutoDelete( true ); + + if ( src ) + { + QByteArray *byteArray; + const char *format; + int i = 0; + while ( (format = src->format( i++ )) ) + { + byteArray = new QByteArray(); + *byteArray = src->encodedData( format ).copy(); + m_data.append( byteArray ); + m_formats.append( format ); + } + } + } + + ~MimeSource() {} + + virtual const char *format( int i ) const { + if ( i < (int) m_formats.count() ) + return m_formats.at( i ); + else + return 0L; + } + virtual bool provides( const char *mimeType ) const { + return ( m_formats.find( mimeType ) > -1 ); + } + virtual QByteArray encodedData( const char *format ) const + { + int index = m_formats.find( format ); + if ( index > -1 ) + return *(m_data.at( index )); + + return QByteArray(); + } + +private: + mutable QStrList m_formats; + mutable QPtrList<QByteArray> m_data; +}; + + +KClipboardSynchronizer * KClipboardSynchronizer::s_self = 0L; +bool KClipboardSynchronizer::s_sync = false; +bool KClipboardSynchronizer::s_reverse_sync = false; +bool KClipboardSynchronizer::s_blocked = false; + +KClipboardSynchronizer * KClipboardSynchronizer::self() +{ + if ( !s_self ) + s_self = new KClipboardSynchronizer( kapp, "KDE Clipboard" ); + + return s_self; +} + +KClipboardSynchronizer::KClipboardSynchronizer( QObject *parent, const char *name ) + : QObject( parent, name ) +{ + s_self = this; + + KConfigGroup config( KGlobal::config(), "General" ); + s_sync = config.readBoolEntry( "SynchronizeClipboardAndSelection", s_sync); + s_reverse_sync = config.readBoolEntry( "ClipboardSetSelection", + s_reverse_sync ); + + setupSignals(); +} + +KClipboardSynchronizer::~KClipboardSynchronizer() +{ + if ( s_self == this ) + s_self = 0L; +} + +void KClipboardSynchronizer::setupSignals() +{ + QClipboard *clip = QApplication::clipboard(); + disconnect( clip, NULL, this, NULL ); + if( s_sync ) + connect( clip, SIGNAL( selectionChanged() ), + SLOT( slotSelectionChanged() )); + if( s_reverse_sync ) + connect( clip, SIGNAL( dataChanged() ), + SLOT( slotClipboardChanged() )); +} + +void KClipboardSynchronizer::slotSelectionChanged() +{ + QClipboard *clip = QApplication::clipboard(); + +// qDebug("*** sel changed: %i", s_blocked); + if ( s_blocked || !clip->ownsSelection() ) + return; + + setClipboard( new MimeSource( clip->data( QClipboard::Selection) ), + QClipboard::Clipboard ); +} + +void KClipboardSynchronizer::slotClipboardChanged() +{ + QClipboard *clip = QApplication::clipboard(); + +// qDebug("*** clip changed : %i (implicit: %i, ownz: clip: %i, selection: %i)", s_blocked, s_implicitSelection, clip->ownsClipboard(), clip->ownsSelection()); + if ( s_blocked || !clip->ownsClipboard() ) + return; + + setClipboard( new MimeSource( clip->data( QClipboard::Clipboard ) ), + QClipboard::Selection ); +} + +void KClipboardSynchronizer::setClipboard( QMimeSource *data, QClipboard::Mode mode ) +{ +// qDebug("---> setting clipboard: %p", data); + + QClipboard *clip = QApplication::clipboard(); + + s_blocked = true; + + if ( mode == QClipboard::Clipboard ) + { + clip->setData( data, QClipboard::Clipboard ); + } + else if ( mode == QClipboard::Selection ) + { + clip->setData( data, QClipboard::Selection ); + } + + s_blocked = false; +} + +void KClipboardSynchronizer::setSynchronizing( bool sync ) +{ + s_sync = sync; + self()->setupSignals(); +} + +void KClipboardSynchronizer::setReverseSynchronizing( bool enable ) +{ + s_reverse_sync = enable; + self()->setupSignals(); +} + +// private, called by KApplication +void KClipboardSynchronizer::newConfiguration( int config ) +{ + s_sync = (config & Synchronize); + self()->setupSignals(); +} + +#include "kclipboard.moc" |