kdeui Library API Documentation

kpushbutton.cpp

00001 /* This file is part of the KDE libraries
00002     Copyright (C) 2000 Carsten Pfeiffer <pfeiffer@kde.org>
00003 
00004     library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public License
00015     along with this library; see the file COPYING.LIB.  If not, write to
00016     the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
00017     Boston, MA 02111-1307, USA.
00018 */
00019 
00020 #include <kglobalsettings.h>
00021 #include <qdragobject.h>
00022 #include <kconfig.h>
00023 #include <kglobal.h>
00024 #include <kipc.h>
00025 #include <kapplication.h>
00026 
00027 #include "kpushbutton.h"
00028 
00029 class KPushButton::KPushButtonPrivate
00030 {
00031 public:
00032     KGuiItem item;
00033 };
00034 
00035 bool KPushButton::s_useIcons = false;
00036 
00037 KPushButton::KPushButton( QWidget *parent, const char *name )
00038     : QPushButton( parent, name ),
00039       m_dragEnabled( false )
00040 {
00041     init( KGuiItem( "" ) );
00042 }
00043 
00044 KPushButton::KPushButton( const QString &text, QWidget *parent,
00045                                   const char *name)
00046     : QPushButton( parent, name ),
00047       m_dragEnabled( false )
00048 {
00049     init( KGuiItem( text ) );
00050 }
00051 
00052 KPushButton::KPushButton( const QIconSet &icon, const QString &text,
00053                                   QWidget *parent, const char *name )
00054     : QPushButton( text, parent, name ),
00055       m_dragEnabled( false )
00056 {
00057     init( KGuiItem( text, icon ) );
00058 }
00059 
00060 KPushButton::KPushButton( const KGuiItem &item, QWidget *parent,
00061                           const char *name )
00062     : QPushButton( parent, name ),
00063       m_dragEnabled( false )
00064 {
00065     init( item );
00066 }
00067 
00068 KPushButton::~KPushButton()
00069 {
00070     if( d )
00071     {
00072         delete d;
00073         d = 0L;
00074     }
00075 }
00076 
00077 void KPushButton::init( const KGuiItem &item )
00078 {
00079     d = new KPushButtonPrivate;
00080     d->item = item;
00081     setText( item.text() );
00082 
00083     static bool initialized = false;
00084     if ( !initialized ) {
00085         readSettings();
00086         initialized = true;
00087     }
00088     
00089     if ( needIcons() )
00090         setIconSet( d->item.iconSet() );
00091     
00092     setSizePolicy( QSizePolicy( QSizePolicy::Minimum, QSizePolicy::Minimum ) );
00093 
00094     if (kapp)
00095     {
00096        connect( kapp, SIGNAL( settingsChanged(int) ),
00097                SLOT( slotSettingsChanged(int) ) );
00098        kapp->addKipcEventMask( KIPC::SettingsChanged );
00099     }
00100 }
00101 
00102 bool KPushButton::needIcons()
00103 {
00104     return s_useIcons && d->item.hasIconSet();
00105 }
00106 
00107 void KPushButton::readSettings()
00108 {
00109     KConfigGroup cg ( KGlobal::config(), "KDE" );
00110     s_useIcons = cg.readBoolEntry( "ShowIconsOnPushButtons", false );
00111 }
00112 
00113 void KPushButton::setGuiItem( const KGuiItem& item )
00114 {
00115     d->item = item;
00116     setText( item.text() );
00117     if ( needIcons() )
00118         setIconSet( d->item.iconSet() );
00119 }
00120 
00121 void KPushButton::slotSettingsChanged( int /* category */ )
00122 {
00123     readSettings();
00124     if ( needIcons() )
00125         setIconSet( d->item.iconSet() );
00126     else
00127         setIconSet( QIconSet() );
00128 }
00129 
00130 void KPushButton::setDragEnabled( bool enable )
00131 {
00132     m_dragEnabled = enable;
00133 }
00134 
00135 void KPushButton::mousePressEvent( QMouseEvent *e )
00136 {
00137     if ( m_dragEnabled )
00138         startPos = e->pos();
00139     QPushButton::mousePressEvent( e );
00140 }
00141 
00142 void KPushButton::mouseMoveEvent( QMouseEvent *e )
00143 {
00144     if ( !m_dragEnabled ) {
00145         QPushButton::mouseMoveEvent( e );
00146         return;
00147     }
00148 
00149     if ( (e->state() & LeftButton) &&
00150          (e->pos() - startPos).manhattanLength() >
00151          KGlobalSettings::dndEventDelay() ) {
00152 
00153         startDrag();
00154         setDown( false );
00155     }
00156 }
00157 
00158 QDragObject * KPushButton::dragObject()
00159 {
00160     return 0L;
00161 }
00162 
00163 void KPushButton::startDrag()
00164 {
00165     QDragObject *d = dragObject();
00166     if ( d )
00167         d->dragCopy();
00168 }
00169 
00170 void KPushButton::virtual_hook( int, void* )
00171 { /*BASE::virtual_hook( id, data );*/ }
00172 
00173 #include "kpushbutton.moc"
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This file is part of the documentation for kdelibs Version 3.1.5.
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