lib/gui/slider.cpp

   1 #include <lib/gui/slider.h>
   2
   3 #include <lib/gui/eskin.h>
   4 #include <lib/gui/elabel.h>
   5 #include <lib/gui/guiactions.h>
   6 #include <lib/system/init.h>
   7 #include <lib/system/init_num.h>
   8
   9 inline void swap( gColor& a, gColor& b )
  10 {
  11         gColor tmp = a;
  12         a = b;
  13         b = tmp;
  14 }
  15
  16 eSlider::eSlider( eWidget* parent, const eWidget *descr, int min, int max )
  17         :eProgress( parent, 1), descr(descr)
  18 {
  19         activated_left = eSkin::getActive()->queryScheme( "eSlider.activated.left" );
  20         activated_right = eSkin::getActive()->queryScheme( "eSlider.activated.right" );
  21         setMin(min);
  22         setMax(max);
  23         incrementation = 4; // in Percent
  24         addActionMap(&i_cursorActions->map);
  25 }
  26
  27 void eSlider::setMin( int i )
  28 {
  29         min = i;
  30 }
  31
  32 void eSlider::setMax( int i )
  33 {
  34         max = (i <= min) ? 99 : i;
  35 }
  36
  37 void eSlider::setValue( int i )
  38 {
  39         if ( i >= min && i <= max )
  40 //              setPerc( (int) round( i * (double)100/((max-min)+1) ) );
  41                 setPerc((i-min) * 100 / (max-min));
  42         else
  43                 setPerc( 0 );
  44 }
  45
  46 int eSlider::getValue()
  47 {
  48         int ret = (int) ( (double) perc / 100 * ( (max-min)+1));
  49         return (ret > max ? max : ret);
  50 }
  51
  52 void eSlider::setIncrement( int i )
  53 {
  54         if (!i)
  55                 incrementation = 4;
  56         else
  57                 incrementation = i;
  58 }
  59
  60 int eSlider::setProperty( const eString &prop, const eString &val)
  61 {
  62         if (prop == "leftColorActive")
  63                 activated_left=eSkin::getActive()->queryColor( prop );
  64         else if (prop == "rightColorActive")
  65                 activated_right=eSkin::getActive()->queryColor( prop );
  66         else if (prop == "incrementation")
  67                 setIncrement( atoi( val.c_str() ) );
  68         else if (prop == "min")
  69                 setMin( atoi(val.c_str()) );
  70         else if (prop == "max")
  71                 setMax( atoi(val.c_str()) );
  72         else
  73                 return eProgress::setProperty( prop, val );
  74         return 0;
  75 }
  76
  77 void eSlider::gotFocus()
  78 {
  79         have_focus++;
  80         swap( left, activated_left );
  81         swap( right, activated_right );
  82
  83 #ifndef DISABLE_LCD
  84         if (parent && parent->LCDElement)  // detect if LCD Avail
  85         {
  86                 LCDTmp = new eProgress( parent->LCDElement );
  87                 LCDTmp->hide();
  88                 LCDTmp->setForegroundColor( 255 );
  89                 ((eSlider*)LCDTmp)->left=255;
  90                 ((eSlider*)LCDTmp)->right=0;
  91                 ((eProgress*)LCDTmp)->setPerc( perc );
  92                 eSize s = parent->LCDElement->getSize();
  93
  94                 if (descr)
  95                 {
  96                         LCDTmp->move(ePoint(0, s.height()/2 + s.height()/4 - 6 ));
  97                         LCDTmp->resize( eSize(s.width(), 12) );
  98                         tmpDescr = new eLabel(parent->LCDElement);
  99                         tmpDescr->hide();
 100                         tmpDescr->move(ePoint(0,0));
 101                         tmpDescr->resize(eSize(s.width(), s.height()/2));
 102                         tmpDescr->setText(descr->getText());
 103                         tmpDescr->show();
 104                 }
 105                 else
 106                 {
 107                         LCDTmp->resize( eSize(s.width(), 8) );
 108                         LCDTmp->move(ePoint(0, s.height() / 2 - 6));
 109                 }
 110                 ((eProgress*)LCDTmp)->setPerc( perc );
 111                 LCDTmp->show();
 112         }
 113 #endif // DISABLE_LCD
 114         redraw();
 115 }
 116
 117 void eSlider::lostFocus()
 118 {
 119 // swap back;
 120         swap( left, activated_left );
 121         swap( right, activated_right );
 122
 123 #ifndef DISABLE_LCD
 124         if (LCDTmp)
 125         {
 126                 delete LCDTmp;
 127                 LCDTmp=0;
 128                 if (tmpDescr)
 129                 {
 130                         delete tmpDescr;
 131                         tmpDescr=0;
 132                 }
 133         }
 134 #endif
 135         have_focus--;
 136         invalidate();
 137 }
 138
 139 int eSlider::eventHandler( const eWidgetEvent& event )
 140 {
 141         switch (event.type)
 142         {
 143                 case eWidgetEvent::evtAction:
 144                 {
 145                         if(event.action == &i_cursorActions->right)
 146                         {
 147                                 if ( (perc += incrementation) > 100 )
 148                                         perc = 100;
 149                         }
 150                         else if(event.action == &i_cursorActions->left)
 151                         {
 152                                 if ( (perc-=incrementation) < 0 )
 153                                         perc = 0;
 154                         }
 155                         else
 156                                 break;
 157                         redraw();
 158                         /* emit */ changed( getValue() );
 159 #ifndef DISABLE_LCD
 160                         if (LCDTmp)
 161                                 ((eProgress*)LCDTmp)->setPerc( perc );
 162 #endif
 163                         return 1;
 164                 }
 165                 default:
 166                         break;
 167         }
 168         return eProgress::eventHandler( event );
 169 }
 170
 171 static eWidget *create_eSlider(eWidget *parent)
 172 {
 173         return new eSlider(parent);
 174 }
 175
 176 class eSliderSkinInit
 177 {
 178 public:
 179         eSliderSkinInit()
 180         {
 181                 eSkin::addWidgetCreator("eSlider", create_eSlider);
 182         }
 183         ~eSliderSkinInit()
 184         {
 185                 eSkin::removeWidgetCreator("eSlider", create_eSlider);
 186         }
 187 };
 188
 189 eAutoInitP0<eSliderSkinInit> init_eSliderSkinInit(eAutoInitNumbers::guiobject, "eSlider");