lib/gui/eslider.cpp

   1 #include <lib/gui/eslider.h>
   2
   3 eSlider::eSlider(eWidget *parent)
   4         :eWidget(parent), m_have_border_color(false), m_start(0), m_orientation(orHorizontal), m_border_width(0)
   5 {
   6 }
   7
   8 void eSlider::setBorderWidth(int pixel)
   9 {
  10         m_border_width=pixel;
  11         invalidate();
  12 }
  13
  14 void eSlider::setBorderColor(const gRGB &color)
  15 {
  16         m_border_color=color;
  17         m_have_border_color=true;
  18         invalidate();
  19 }
  20
  21 int eSlider::event(int event, void *data, void *data2)
  22 {
  23         switch (event)
  24         {
  25         case evtPaint:
  26         {
  27                 ePtr<eWindowStyle> style;
  28                 gPainter &painter = *(gPainter*)data2;
  29
  30                 eSize s(size());
  31
  32                 getStyle(style);
  33                 style->paintBackground(painter, ePoint(0,0), s);
  34                 style->setStyle(painter, eWindowStyle::styleLabel); // TODO - own style
  35                 painter.fill(m_currently_filled);
  36
  37 // border
  38                 if (m_have_border_color)
  39                         painter.setForegroundColor(m_border_color);
  40                 painter.fill(eRect(0, 0, s.width(), m_border_width));
  41                 painter.fill(eRect(0, m_border_width, m_border_width, s.height()-m_border_width));
  42                 painter.fill(eRect(m_border_width, s.height()-m_border_width, s.width()-m_border_width, m_border_width));
  43                 painter.fill(eRect(s.width()-m_border_width, m_border_width, m_border_width, s.height()-m_border_width));
  44
  45                 return 0;
  46         }
  47         case evtChangedSlider:
  48         {
  49                 int num_pix = 0, start_pix = 0;
  50                 gRegion old_currently_filled = m_currently_filled;
  51
  52                 int pixsize = (m_orientation == orHorizontal) ? size().width() : size().height();
  53
  54                 if (m_min < m_max)
  55                 {
  56                         num_pix = pixsize * (m_value - m_start) / (m_max - m_min);
  57                         start_pix = pixsize * m_start / (m_max - m_min);
  58                 }
  59
  60                 if  (start_pix < 0)
  61                 {
  62                         num_pix += start_pix;
  63                         start_pix = 0;
  64                 }
  65
  66                 if (num_pix < 0)
  67                         num_pix = 0;
  68
  69                 if (m_orientation == orHorizontal)
  70                         m_currently_filled = eRect(start_pix, 0, num_pix, pixsize);
  71                 else
  72                         m_currently_filled = eRect(0, start_pix, pixsize, num_pix);
  73
  74                         // redraw what *was* filled before and now isn't.
  75                 invalidate(m_currently_filled - old_currently_filled);
  76                         // redraw what wasn't filled before and is now.
  77                 invalidate(old_currently_filled - m_currently_filled);
  78
  79                 return 0;
  80         }
  81         default:
  82                 return eWidget::event(event, data, data2);
  83         }
  84 }
  85
  86 void eSlider::setValue(int value)
  87 {
  88         m_value = value;
  89         event(evtChangedSlider);
  90 }
  91
  92 void eSlider::setStartEnd(int start, int end)
  93 {
  94         m_value = end;
  95         m_start = start;
  96         event(evtChangedSlider);
  97 }
  98
  99 void eSlider::setOrientation(int orientation)
 100 {
 101         m_orientation = orientation;
 102         event(evtChangedSlider);
 103 }
 104
 105 void eSlider::setRange(int min, int max)
 106 {
 107         m_min = min;
 108         m_max = max;
 109         event(evtChangedSlider);
 110 }