src/YQSlider.cc

   1 /*---------------------------------------------------------------------\
   2 |                                                                      |
   3 |                      __   __    ____ _____ ____                      |
   4 |                      \ \ / /_ _/ ___|_   _|___ \                     |
   5 |                       \ V / _` \___ \ | |   __) |                    |
   6 |                        | | (_| |___) || |  / __/                     |
   7 |                        |_|\__,_|____/ |_| |_____|                    |
   8 |                                                                      |
   9 |                               core system                            |
  10 |                                                        (C) SuSE GmbH |
  11 \----------------------------------------------------------------------/
  12
  13   File:       YQSlider.cc
  14
  15   Author:     Stefan Hundhammer <sh@suse.de>
  16
  17 /-*/
  18
  19 #include <QSlider>
  20 #include <QSpinBox>
  21 #include <QLabel>
  22 #include <QVBoxLayout>
  23
  24 #define y2log_component "qt-ui"
  25 #include <ycp/y2log.h>
  26
  27 #include "utf8.h"
  28 #include "YQUI.h"
  29 #include "YEvent.h"
  30 #include "YQSlider.h"
  31 #include "YQSignalBlocker.h"
  32 #include "YQWidgetCaption.h"
  33
  34
  35 YQSlider::YQSlider( YWidget *           parent,
  36                     const string &      label,
  37                     int                 minValue,
  38                     int                 maxValue,
  39                     int                 initialValue,
  40                     bool                reverseLayout )
  41
  42     : QFrame( (QWidget *) parent->widgetRep() )
  43     , YSlider( parent, label, minValue, maxValue )
  44 {
  45     setWidgetRep( this );
  46
  47     QVBoxLayout* layout = new QVBoxLayout( this );
  48     setLayout( layout );
  49
  50     layout->setSpacing( YQWidgetSpacing );
  51     layout->setMargin ( YQWidgetMargin );
  52
  53     _caption = new YQWidgetCaption( this, label );
  54     YUI_CHECK_NEW( _caption );
  55     layout->addWidget( _caption );
  56
  57     _hbox = new QFrame( this );
  58     YUI_CHECK_NEW( _hbox );
  59     layout->addWidget( _hbox );
  60
  61     layout = new QVBoxLayout( _hbox );
  62     _hbox->setLayout( layout );
  63
  64     layout->setMargin ( YQWidgetMargin );
  65     layout->setSpacing( YQWidgetSpacing );
  66
  67     if ( reverseLayout )
  68     {
  69         _qt_spinBox = new QSpinBox( _hbox );
  70         _qt_spinBox->setMinimum(minValue);
  71         _qt_spinBox->setMaximum(maxValue);
  72         _qt_spinBox->setSingleStep(1);
  73         layout->addWidget( _qt_spinBox );
  74     }
  75     else
  76     {
  77         _caption->setAlignment( Qt::AlignRight );
  78     }
  79
  80     _qt_slider = new QSlider( Qt::Horizontal, _hbox );
  81     _qt_slider->setMinimum(minValue);
  82     _qt_slider->setMaximum(maxValue);
  83     _qt_slider->setPageStep(1);
  84     YUI_CHECK_NEW( _qt_slider );
  85     layout->addWidget( _qt_slider );
  86
  87     if ( ! reverseLayout )
  88     {
  89         _qt_spinBox = new QSpinBox( _hbox );
  90         _qt_spinBox->setMinimum(minValue);
  91         _qt_spinBox->setMaximum(maxValue);
  92         _qt_spinBox->setSingleStep(1);
  93
  94         layout->addWidget( _qt_spinBox );
  95     }
  96     YUI_CHECK_NEW( _qt_spinBox );
  97
  98     _qt_spinBox->setValue( initialValue );
  99     _caption->setBuddy( _qt_spinBox );
 100
 101     setValue( initialValue );
 102
 103     connect( _qt_spinBox, SIGNAL( valueChanged(int) ),
 104              _qt_slider,  SLOT  ( setValue    (int) ) );
 105
 106     connect( _qt_slider,  SIGNAL( valueChanged(int) ),
 107              _qt_spinBox, SLOT  ( setValue    (int) ) );
 108
 109     connect( _qt_spinBox, SIGNAL( valueChanged    (int) ),
 110              this,        SLOT  ( valueChangedSlot(int) ) );
 111 }
 112
 113
 114 YQSlider::~YQSlider()
 115 {
 116     // NOP
 117 }
 118
 119
 120 int
 121 YQSlider::value()
 122 {
 123     return _qt_spinBox->value();
 124 }
 125
 126
 127 void
 128 YQSlider::setValueInternal( int newValue )
 129 {
 130     YQSignalBlocker sigBlocker1( _qt_spinBox );
 131     YQSignalBlocker sigBlocker2( _qt_slider  );
 132     _qt_slider->setValue ( newValue );
 133     _qt_spinBox->setValue( newValue );
 134 }
 135
 136
 137 void
 138 YQSlider::valueChangedSlot( int newValue )
 139 {
 140     if ( notify() )
 141         YQUI::ui()->sendEvent( new YWidgetEvent( this, YEvent::ValueChanged ) );
 142
 143     emit valueChanged( newValue );
 144 }
 145
 146
 147 void
 148 YQSlider::setEnabled( bool enabled )
 149 {
 150     _caption->setEnabled  ( enabled );
 151     _qt_slider->setEnabled ( enabled );
 152     _qt_spinBox->setEnabled( enabled );
 153     YWidget::setEnabled( enabled );
 154 }
 155
 156
 157 int
 158 YQSlider::preferredWidth()
 159 {
 160     int hintWidth = !_caption->isHidden() ? _caption->sizeHint().width() : 0;
 161
 162     // Arbitrary value - there is no really good default
 163     return max( 200, hintWidth );
 164 }
 165
 166
 167 int
 168 YQSlider::preferredHeight()
 169 {
 170     return sizeHint().height();
 171 }
 172
 173
 174 void
 175 YQSlider::setSize( int newWidth, int newHeight )
 176 {
 177     resize( newWidth, newHeight );
 178 }
 179
 180
 181 void
 182 YQSlider::setLabel( const string & newLabel )
 183 {
 184     _caption->setText( newLabel );
 185     YSlider::setLabel( newLabel );
 186 }
 187
 188
 189 bool
 190 YQSlider::setKeyboardFocus()
 191 {
 192     _qt_spinBox->setFocus();
 193
 194     return true;
 195 }
 196
 197
 198 #include "YQSlider.moc"