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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)
00040     {
00041         QHash<int, QLabel*>::const_iterator it = items.constBegin();
00042         QHash<int, QLabel*>::const_iterator end = items.constEnd();
00043         while ( it != end ) {
00044             if ( object == it.value() ) {
00045                 return it.key();
00046             }
00047 
00048             ++it;
00049         }
00050         kDebug() << "Danger: Unable to find originating event object in object list. This shouldn't happen!";
00051         return -1;
00052     }
00053 
00054     QHash<int, QLabel*> items;
00055 };
00056 
00057 
00058 bool KStatusBar::eventFilter(QObject* object, QEvent* event)
00059 {
00060     if ( event->type() == QEvent::MouseButtonPress ) {
00061         emit pressed( d->id( object ) );
00062         return true;
00063     }
00064     else if ( event->type() == QEvent::MouseButtonRelease ) {
00065         emit released( d->id( object ) );
00066         return true;
00067     }
00068     return false;
00069 }
00070 
00071 KStatusBar::KStatusBar( QWidget *parent )
00072   : QStatusBar( parent ),
00073     d(new KStatusBarPrivate)
00074 {
00075     // make the size grip stuff configurable
00076     // ...but off by default (sven)
00077     // ...but on by default on OSX, else windows with a KStatusBar are not resizable at all (marijn)
00078     KSharedConfig::Ptr config = KGlobal::config();
00079     KConfigGroup group( config, QLatin1String("StatusBar style") );
00080 #ifdef Q_WS_MAC
00081     bool grip_enabled = group.readEntry(QLatin1String("SizeGripEnabled"), true);
00082 #else
00083     bool grip_enabled = group.readEntry(QLatin1String("SizeGripEnabled"), false);
00084 #endif
00085     setSizeGripEnabled(grip_enabled);
00086 
00087     setStyleSheet( "::item { border: 0px; }" );
00088 }
00089 
00090 KStatusBar::~KStatusBar ()
00091 {
00092   delete d;
00093 }
00094 
00095 void KStatusBar::insertItem( const QString& text, int id, int stretch)
00096 {
00097     if ( d->items[id] ) {
00098         kDebug() << "KStatusBar::insertItem: item id " << id << " already exists.";
00099     }
00100 
00101     KSqueezedTextLabel *l = new KSqueezedTextLabel( text, this );
00102     l->installEventFilter( this );
00103     l->setFixedHeight( fontMetrics().height() + 2 );
00104     l->setAlignment( Qt::AlignHCenter | Qt::AlignVCenter );
00105     d->items.insert( id, l );
00106     addPermanentWidget( l, stretch );
00107     l->show();
00108 }
00109 
00110 void KStatusBar::insertFixedItem( const QString& text, int id )
00111 {
00112     insertItem( text, id, 0 );
00113     setItemFixed( id );
00114 }
00115 
00116 
00117 void KStatusBar::insertPermanentItem( const QString& text, int id, int stretch)
00118 {
00119     if (d->items[id]) {
00120         kDebug() << "KStatusBar::insertPermanentItem: item id " << id << " already exists.";
00121     }
00122 
00123     QLabel *l = new QLabel( text, this );
00124     l->installEventFilter( this );
00125     l->setFixedHeight( fontMetrics().height() + 2 );
00126     l->setAlignment( Qt::AlignHCenter | Qt::AlignVCenter );
00127     d->items.insert( id, l );
00128     addPermanentWidget( l, stretch );
00129     l->show();
00130 }
00131 
00132 void KStatusBar::insertPermanentFixedItem( const QString& text, int id )
00133 {
00134     insertPermanentItem( text, id, 0 );
00135     setItemFixed( id );
00136 }
00137 
00138 void KStatusBar::removeItem (int id)
00139 {
00140     if ( d->items.contains( id ) ) {
00141         QLabel *label = d->items[id];
00142         removeWidget( label );
00143         d->items.remove( id );
00144         delete label;
00145     } else {
00146         kDebug() << "KStatusBar::removeItem: bad item id: " << id;
00147     }
00148 }
00149 
00150 bool KStatusBar::hasItem( int id ) const
00151 {
00152     return d->items.contains(id);
00153 }
00154 
00155 QString KStatusBar::itemText( int id ) const
00156 {
00157     if ( !hasItem( id ) ) {
00158         return QString();
00159     }
00160 
00161     return d->items[id]->text();
00162 }
00163 
00164 void KStatusBar::changeItem( const QString& text, int id )
00165 {
00166     QLabel *label = d->items[id];
00167     KSqueezedTextLabel *squeezed = qobject_cast<KSqueezedTextLabel*>( label );
00168 
00169     if ( squeezed ) {
00170         squeezed->setText( text );
00171     } else if ( label ) {
00172         label->setText( text );
00173         if ( label->minimumWidth () != label->maximumWidth () ) {
00174             reformat();
00175         }
00176     } else {
00177         kDebug() << "KStatusBar::changeItem: bad item id: " << id;
00178     }
00179 }
00180 
00181 void KStatusBar::setItemAlignment (int id, Qt::Alignment alignment)
00182 {
00183     QLabel *label = qobject_cast<QLabel*>( d->items[id] );
00184     if ( label ) {
00185         label->setAlignment( alignment );
00186     } else {
00187         kDebug() << "KStatusBar::setItemAlignment: bad item id: " << id;
00188     }
00189 }
00190 
00191 void KStatusBar::setItemFixed(int id, int w)
00192 {
00193     QLabel *label = qobject_cast<QLabel*>(d->items[id]);
00194     if ( label ) {
00195         if ( w == -1 ) {
00196             w = fontMetrics().boundingRect(label->text()).width()+3;
00197         }
00198 
00199         label->setFixedWidth(w);
00200     } else {
00201         kDebug() << "KStatusBar::setItemFixed: bad item id: " << id;
00202     }
00203 }
00204 
00205 #include "kstatusbar.moc"
00206 

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