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KDEUI

ktoolbarlabelaction.cpp

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00001 /* This file is part of the KDE libraries
00002     Copyright (C) 2004 Felix Berger <felixberger@beldesign.de>
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License version 2 as published by the Free Software Foundation.
00007 
00008     This library is distributed in the hope that it will be useful,
00009     but WITHOUT ANY WARRANTY; without even the implied warranty of
00010     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00011     Library General Public License for more details.
00012 
00013     You should have received a copy of the GNU Library General Public License
00014     along with this library; see the file COPYING.LIB.  If not, write to
00015     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00016     Boston, MA 02110-1301, USA.
00017 */
00018 
00019 #include "ktoolbarlabelaction.h"
00020 #include "ktoolbar.h"
00021 
00022 #include <QtCore/QPointer>
00023 #include <QtGui/QApplication>
00024 #include <QtGui/QLabel>
00025 
00026 class KToolBarLabelAction::Private
00027 {
00028   public:
00029     QPointer<QAction> buddy;
00030     QPointer<QLabel> label;
00031 };
00032 
00033 KToolBarLabelAction::KToolBarLabelAction(const QString &text, QObject *parent)
00034   : KAction(text, parent),
00035     d( new Private )
00036 {
00037   d->label = 0;
00038 }
00039 
00040 KToolBarLabelAction::KToolBarLabelAction(QAction* buddy, const QString &text, QObject *parent)
00041   : KAction(text, parent),
00042     d( new Private )
00043 {
00044   setBuddy( buddy );
00045 
00046   d->label = 0;
00047 }
00048 
00049 KToolBarLabelAction::~KToolBarLabelAction()
00050 {
00051   delete d;
00052 }
00053 
00054 void KToolBarLabelAction::setBuddy( QAction* buddy )
00055 {
00056   d->buddy = buddy;
00057 
00058   QList<QLabel*> labels;
00059   foreach ( QWidget* widget, associatedWidgets() )
00060     if ( QToolBar* toolBar = qobject_cast<QToolBar*>( widget ) )
00061       if ( QLabel* label = qobject_cast<QLabel*>( toolBar->widgetForAction( this ) ) )
00062         labels.append( label );
00063 
00064   foreach ( QWidget* widget, buddy->associatedWidgets() )
00065     if ( QToolBar* toolBar = qobject_cast<QToolBar*>( widget ) ) {
00066       QWidget* newBuddy = toolBar->widgetForAction( buddy );
00067       foreach ( QLabel* label, labels )
00068         label->setBuddy( newBuddy );
00069       return;
00070     }
00071 }
00072 
00073 QAction* KToolBarLabelAction::buddy() const
00074 {
00075   return d->buddy;
00076 }
00077 
00078 bool KToolBarLabelAction::event( QEvent *event )
00079 {
00080   if ( event->type() == QEvent::ActionChanged ) {
00081     if ( d->label && text() != d->label->text() ) {
00082       emit textChanged( text() );
00083       d->label->setText(text());
00084     }
00085   }
00086 
00087   return KAction::event( event );
00088 }
00089 
00090 bool KToolBarLabelAction::eventFilter( QObject *watched, QEvent *event )
00091 {
00092   if ( d->label && d->buddy && event->type() == QEvent::PolishRequest && watched == d->label) {
00093     foreach ( QWidget* widget, d->buddy->associatedWidgets() ) {
00094       if ( QToolBar* toolBar = qobject_cast<QToolBar*>( widget ) ) {
00095         QWidget* newBuddy = toolBar->widgetForAction( d->buddy );
00096         d->label->setBuddy( newBuddy );
00097       }
00098     }
00099   }
00100   
00101   return KAction::eventFilter( watched, event );
00102 }
00103 
00104 QWidget *KToolBarLabelAction::createWidget( QWidget* _parent )
00105 {
00106   QToolBar *parent = qobject_cast<QToolBar *>(_parent);
00107   if (!parent)
00108     return KAction::createWidget(_parent);
00109   if (!d->label) {
00110     d->label = new QLabel( parent );
00111 
00116     d->label->setBackgroundRole( QPalette::Button );
00117     d->label->setAlignment( (QApplication::isRightToLeft() ? Qt::AlignRight : Qt::AlignLeft) |
00118                             Qt::AlignVCenter );
00119     d->label->adjustSize();
00120     d->label->setText(text());
00121     d->label->installEventFilter( this );
00122   }
00123 
00124   return d->label;
00125 }
00126 
00127 #include "ktoolbarlabelaction.moc"

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