src/equalizerpresetmanager.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Markus Brueffer <markus@brueffer.de>            *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.          *
  18  ***************************************************************************/
  19
  20 #include "equalizerpresetmanager.h"
  21
  22 #include <k3listview.h>
  23 #include <KApplication>
  24 #include <KInputDialog>
  25 #include <KLocale>
  26 #include <KMessageBox>
  27 #include <KStandardDirs> //locate()
  28 #include <KVBox>
  29
  30 #include <QDomDocument>
  31 #include <QDomElement>
  32 #include <QDomNode>
  33 #include <QFile>
  34 #include <QLayout>
  35 #include <QPushButton>
  36 #include <QTextStream>
  37
  38 EqualizerPresetManager::EqualizerPresetManager( QWidget *parent, const char *name )
  39         : KDialog( parent )
  40 {
  41     setCaption( i18n("Presets") );
  42     setModal( true );
  43     setButtons( Ok | Cancel | Default );
  44     setDefaultButton( Ok );
  45     showButtonSeparator( true );
  46
  47     QWidget *mainWidget = new QWidget( this );
  48     setMainWidget( mainWidget );
  49     QHBoxLayout *mainLayout = new QHBoxLayout( mainWidget, 0, spacingHint() );
  50
  51     m_presetsView = new K3ListView( mainWidget );
  52     m_presetsView->setObjectName( "presetListView" );
  53     m_presetsView->addColumn( i18n( "Presets" ) );
  54     m_presetsView->setFullWidth( true );
  55     connect(m_presetsView, SIGNAL( selectionChanged() ), SLOT( updateButtonState() ));
  56     connect(m_presetsView, SIGNAL( doubleClicked ( Q3ListViewItem*, const QPoint&, int ) ), SLOT( slotRename() ));
  57     mainLayout->addWidget( m_presetsView );
  58
  59     QVBoxLayout* buttonsLayout = new QVBoxLayout( mainLayout );
  60
  61     m_renameBtn = new QPushButton( i18n("&Rename"), mainWidget, "renameBtn" );
  62     m_deleteBtn = new QPushButton( i18n("&Delete"), mainWidget, "deleteBtn" );
  63
  64     buttonsLayout->addWidget( m_renameBtn );
  65     buttonsLayout->addWidget( m_deleteBtn );
  66
  67     connect(m_renameBtn, SIGNAL( clicked() ), SLOT( slotRename() ));
  68     connect(m_deleteBtn, SIGNAL( clicked() ), SLOT( slotDelete() ));
  69     connect(this, SIGNAL( defaultClicked() ), SLOT( slotDefault() ));
  70
  71     QSpacerItem* spacer = new QSpacerItem( 20, 40, QSizePolicy::Minimum, QSizePolicy::Expanding );
  72     buttonsLayout->addItem( spacer );
  73
  74     updateButtonState();
  75
  76     resize( QSize(300, 250).expandedTo(minimumSizeHint()) );
  77 }
  78
  79
  80 EqualizerPresetManager::~EqualizerPresetManager()
  81 {
  82 }
  83
  84 void
  85 EqualizerPresetManager::setPresets(QMap< QString, QList<int> > presets)
  86 {
  87     if ( presets.empty() )
  88         return;
  89
  90     m_presets = presets;
  91     m_presetsView->clear();
  92
  93     QMap< QString, QList<int> >::Iterator end = presets.end();
  94     for ( QMap< QString, QList<int> >::Iterator it = presets.begin(); it != end; ++it )
  95         if ( it.key() != i18n( "Zero" ) && it.key() != i18n( "Manual" ) ) // Don't add 'Manual' and 'Zero'
  96             new K3ListViewItem( m_presetsView, it.key() );
  97 }
  98
  99 QMap< QString, QList<int> >
 100 EqualizerPresetManager::presets()
 101 {
 102     return m_presets;
 103 }
 104
 105 void
 106 EqualizerPresetManager::slotRename()
 107 {
 108     bool ok;
 109     Q3ListViewItem* item = m_presetsView->selectedItem();
 110     const QString title = KInputDialog::getText( i18n("Rename Equalizer Preset"),
 111                                                  i18n("Enter new preset name:"), item->text(0), &ok, this);
 112
 113     if ( ok && item->text(0) != title ) {
 114         // Check if the new preset title exists
 115         if ( m_presets.find( title ) != m_presets.end() ) {
 116             int button = KMessageBox::warningYesNo( this, i18n( "A preset with the name %1 already exists. Overwrite?", title ) );
 117
 118             if ( button != KMessageBox::Yes )
 119                 return;
 120         }
 121
 122         m_presets[ title ] = m_presets[ item->text(0)];
 123         m_presets.remove( item->text(0) );
 124         item->setText(0, title);
 125     }
 126 }
 127
 128 void
 129 EqualizerPresetManager::slotDefault()
 130 {
 131     int button = KMessageBox::warningYesNo( this, i18n( "All presets will be deleted and defaults will be restored. Are you sure?" ) );
 132
 133     if ( button != KMessageBox::Yes )
 134         return;
 135
 136     // Preserve the 'Manual' preset
 137     QList<int> manualGains = m_presets[ i18n("Manual") ];
 138
 139     // Delete all presets
 140     m_presets.clear();
 141
 142     // Create predefined presets 'Zero' and 'Manual'
 143     QList<int> zeroGains;
 144     zeroGains << 0 << 0 << 0 << 0 << 0 << 0 << 0 << 0 << 0 << 0;
 145     m_presets[ i18n("Zero") ] = zeroGains;
 146     m_presets[ i18n("Manual") ] = manualGains;
 147
 148     // Load the default presets
 149     QFile file( KStandardDirs::locate( "data", "amarok/data/equalizer_presets.xml" ) );
 150
 151     QTextStream stream( &file );
 152     stream.setCodec( "UTF8" );
 153
 154     QDomDocument d;
 155
 156     if( !file.open( QIODevice::ReadOnly ) || !d.setContent( stream.read() ) )
 157         return;
 158
 159     QDomNode n = d.namedItem( "equalizerpresets" ).namedItem("preset");
 160
 161     for( ; !n.isNull();  n = n.nextSibling() )
 162     {
 163         QDomElement e = n.toElement();
 164         QString title = e.attribute( "name" );
 165
 166         QList<int> gains;
 167         gains << e.namedItem( "b0" ).toElement().text().toInt();
 168         gains << e.namedItem( "b1" ).toElement().text().toInt();
 169         gains << e.namedItem( "b2" ).toElement().text().toInt();
 170         gains << e.namedItem( "b3" ).toElement().text().toInt();
 171         gains << e.namedItem( "b4" ).toElement().text().toInt();
 172         gains << e.namedItem( "b5" ).toElement().text().toInt();
 173         gains << e.namedItem( "b6" ).toElement().text().toInt();
 174         gains << e.namedItem( "b7" ).toElement().text().toInt();
 175         gains << e.namedItem( "b8" ).toElement().text().toInt();
 176         gains << e.namedItem( "b9" ).toElement().text().toInt();
 177
 178         m_presets[ title ] = gains;
 179     }
 180
 181     file.close();
 182
 183     // Update listview
 184     setPresets( m_presets );
 185 }
 186
 187 void
 188 EqualizerPresetManager::slotDelete()
 189 {
 190     Q3ListViewItem* item = m_presetsView->selectedItem();
 191
 192     m_presets.remove( item->text(0) );
 193
 194     delete item;
 195 }
 196
 197 void
 198 EqualizerPresetManager::updateButtonState()
 199 {
 200     bool selected = ( m_presetsView->selectedItem() != 0 );
 201
 202     m_deleteBtn->setEnabled( selected );
 203     m_renameBtn->setEnabled( selected );
 204 }
 205
 206 #include "equalizerpresetmanager.moc"