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kstatusbar.cpp

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00001 /* This file is part of the KDE libraries
00002     Copyright (C) 1997 Mark Donohoe (donohoe@kde.org)
00003               (C) 1997,1998, 2000 Sven Radej (radej@kde.org)
00004               (C) 2007 Aron Boström (aron.bostrom@gmail.com)
00005 
00006     This library is free software; you can redistribute it and/or
00007     modify it under the terms of the GNU Library General Public
00008     License as published by the Free Software Foundation; either
00009     version 2 of the License, or (at your option) any later version.
00010 
00011     This library is distributed in the hope that it will be useful,
00012     but WITHOUT ANY WARRANTY; without even the implied warranty of
00013     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014     Library General Public License for more details.
00015 
00016     You should have received a copy of the GNU Library General Public License
00017     along with this library; see the file COPYING.LIB.  If not, write to
00018     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019     Boston, MA 02110-1301, USA.
00020 */
00021 
00022 #include "kstatusbar.h"
00023 
00024 #include <QtCore/QHash>
00025 #include <QtCore/QEvent>
00026 #include <QtGui/QLabel>
00027 
00028 #include <kdebug.h>
00029 #include <kglobal.h>
00030 #include <ksharedconfig.h>
00031 #include <kconfiggroup.h>
00032 
00033 #include "ksqueezedtextlabel.h"
00034 
00035 
00036 class KStatusBarPrivate
00037 {
00038 public:
00039     int id(QObject* object) const
00040     {
00041         QHash<int, QLabel*>::const_iterator it = qFind(items, object);
00042         if (it != items.constEnd())
00043             return it.key();
00044         // Not found. This happens when a subclass uses an eventFilter too,
00045         // on objects not registered here.
00046         return -1;
00047     }
00048 
00049     QHash<int, QLabel*> items;
00050 };
00051 
00052 
00053 bool KStatusBar::eventFilter(QObject* object, QEvent* event)
00054 {
00055     if ( event->type() == QEvent::MouseButtonPress ) {
00056         const int id = d->id(object);
00057         if (id > -1) {
00058             emit pressed( d->id( object ) );
00059             return true;
00060         }
00061     }
00062     else if ( event->type() == QEvent::MouseButtonRelease ) {
00063         const int id = d->id(object);
00064         if (id > -1) {
00065             emit released( d->id( object ) );
00066             return true;
00067         }
00068     }
00069     return QStatusBar::eventFilter(object, event);
00070 }
00071 
00072 KStatusBar::KStatusBar( QWidget *parent )
00073   : QStatusBar( parent ),
00074     d(new KStatusBarPrivate)
00075 {
00076     // make the size grip stuff configurable
00077     // ...but off by default (sven)
00078     // ...but on by default on OSX, else windows with a KStatusBar are not resizable at all (marijn)
00079     KSharedConfig::Ptr config = KGlobal::config();
00080     KConfigGroup group( config, QLatin1String("StatusBar style") );
00081 #ifdef Q_WS_MAC
00082     bool grip_enabled = group.readEntry(QLatin1String("SizeGripEnabled"), true);
00083 #else
00084     bool grip_enabled = group.readEntry(QLatin1String("SizeGripEnabled"), false);
00085 #endif
00086     setSizeGripEnabled(grip_enabled);
00087 }
00088 
00089 KStatusBar::~KStatusBar ()
00090 {
00091   delete d;
00092 }
00093 
00094 void KStatusBar::insertItem( const QString& text, int id, int stretch)
00095 {
00096     if ( d->items[id] ) {
00097         kDebug() << "KStatusBar::insertItem: item id " << id << " already exists.";
00098     }
00099 
00100     KSqueezedTextLabel *l = new KSqueezedTextLabel( text, this );
00101     l->installEventFilter( this );
00102     l->setFixedHeight( fontMetrics().height() + 2 );
00103     l->setAlignment( Qt::AlignHCenter | Qt::AlignVCenter );
00104     d->items.insert( id, l );
00105     addPermanentWidget( l, stretch );
00106     l->show();
00107 }
00108 
00109 void KStatusBar::insertFixedItem( const QString& text, int id )
00110 {
00111     insertItem( text, id, 0 );
00112     setItemFixed( id );
00113 }
00114 
00115 
00116 void KStatusBar::insertPermanentItem( const QString& text, int id, int stretch)
00117 {
00118     if (d->items[id]) {
00119         kDebug() << "KStatusBar::insertPermanentItem: item id " << id << " already exists.";
00120     }
00121 
00122     QLabel *l = new QLabel( text, this );
00123     l->installEventFilter( this );
00124     l->setFixedHeight( fontMetrics().height() + 2 );
00125     l->setAlignment( Qt::AlignHCenter | Qt::AlignVCenter );
00126     d->items.insert( id, l );
00127     addPermanentWidget( l, stretch );
00128     l->show();
00129 }
00130 
00131 void KStatusBar::insertPermanentFixedItem( const QString& text, int id )
00132 {
00133     insertPermanentItem( text, id, 0 );
00134     setItemFixed( id );
00135 }
00136 
00137 void KStatusBar::removeItem (int id)
00138 {
00139     if ( d->items.contains( id ) ) {
00140         QLabel *label = d->items[id];
00141         removeWidget( label );
00142         d->items.remove( id );
00143         delete label;
00144     } else {
00145         kDebug() << "KStatusBar::removeItem: bad item id: " << id;
00146     }
00147 }
00148 
00149 bool KStatusBar::hasItem( int id ) const
00150 {
00151     return d->items.contains(id);
00152 }
00153 
00154 QString KStatusBar::itemText( int id ) const
00155 {
00156     if ( !hasItem( id ) ) {
00157         return QString();
00158     }
00159 
00160     return d->items[id]->text();
00161 }
00162 
00163 void KStatusBar::changeItem( const QString& text, int id )
00164 {
00165     QLabel *label = d->items[id];
00166     KSqueezedTextLabel *squeezed = qobject_cast<KSqueezedTextLabel*>( label );
00167 
00168     if ( squeezed ) {
00169         squeezed->setText( text );
00170     } else if ( label ) {
00171         label->setText( text );
00172         if ( label->minimumWidth () != label->maximumWidth () ) {
00173             reformat();
00174         }
00175     } else {
00176         kDebug() << "KStatusBar::changeItem: bad item id: " << id;
00177     }
00178 }
00179 
00180 void KStatusBar::setItemAlignment (int id, Qt::Alignment alignment)
00181 {
00182     QLabel *label = qobject_cast<QLabel*>( d->items[id] );
00183     if ( label ) {
00184         label->setAlignment( alignment );
00185     } else {
00186         kDebug() << "KStatusBar::setItemAlignment: bad item id: " << id;
00187     }
00188 }
00189 
00190 void KStatusBar::setItemFixed(int id, int w)
00191 {
00192     QLabel *label = qobject_cast<QLabel*>(d->items[id]);
00193     if ( label ) {
00194         if ( w == -1 ) {
00195             w = fontMetrics().boundingRect(label->text()).width()+3;
00196         }
00197 
00198         label->setFixedWidth(w);
00199     } else {
00200         kDebug() << "KStatusBar::setItemFixed: bad item id: " << id;
00201     }
00202 }
00203 
00204 #include "kstatusbar.moc"
00205 

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