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::setPixmap(gPixmap *pixmap)
   9 {
  10         m_pixmap = pixmap;
  11         event(evtChangedSlider);
  12 }
  13
  14 void eSlider::setBorderWidth(int pixel)
  15 {
  16         m_border_width=pixel;
  17         invalidate();
  18 }
  19
  20 void eSlider::setBorderColor(const gRGB &color)
  21 {
  22         m_border_color=color;
  23         m_have_border_color=true;
  24         invalidate();
  25 }
  26
  27 int eSlider::event(int event, void *data, void *data2)
  28 {
  29         switch (event)
  30         {
  31         case evtPaint:
  32         {
  33                 ePtr<eWindowStyle> style;
  34
  35                 eSize s(size());
  36                 getStyle(style);
  37                         /* paint background */
  38                 eWidget::event(evtPaint, data, data2);
  39
  40                 gPainter &painter = *(gPainter*)data2;
  41
  42                 style->setStyle(painter, eWindowStyle::styleLabel); // TODO - own style
  43
  44                 if (!m_pixmap)
  45                         painter.fill(m_currently_filled);
  46                 else
  47                         painter.blit(m_pixmap, ePoint(0, 0), m_currently_filled.extends, isTransparent() ? gPainter::BT_ALPHATEST : 0);
  48
  49 // border
  50                 if (m_have_border_color)
  51                         painter.setForegroundColor(m_border_color);
  52                 painter.fill(eRect(0, 0, s.width(), m_border_width));
  53                 painter.fill(eRect(0, m_border_width, m_border_width, s.height()-m_border_width));
  54                 painter.fill(eRect(m_border_width, s.height()-m_border_width, s.width()-m_border_width, m_border_width));
  55                 painter.fill(eRect(s.width()-m_border_width, m_border_width, m_border_width, s.height()-m_border_width));
  56
  57                 return 0;
  58         }
  59         case evtChangedSlider:
  60         {
  61                 int num_pix = 0, start_pix = 0;
  62                 gRegion old_currently_filled = m_currently_filled;
  63
  64                 int pixsize = (m_orientation == orHorizontal) ? size().width() : size().height();
  65
  66                 if (m_min < m_max)
  67                 {
  68                         num_pix = pixsize * (m_value - m_start) / (m_max - m_min);
  69                         start_pix = pixsize * m_start / (m_max - m_min);
  70                 }
  71
  72                 if  (start_pix < 0)
  73                 {
  74                         num_pix += start_pix;
  75                         start_pix = 0;
  76                 }
  77
  78                 if (num_pix < 0)
  79                         num_pix = 0;
  80
  81                 if (m_orientation == orHorizontal)
  82                         m_currently_filled = eRect(start_pix, 0, num_pix, pixsize);
  83                 else
  84                         m_currently_filled = eRect(0, start_pix, pixsize, num_pix);
  85
  86                         // redraw what *was* filled before and now isn't.
  87                 invalidate(m_currently_filled - old_currently_filled);
  88                         // redraw what wasn't filled before and is now.
  89                 invalidate(old_currently_filled - m_currently_filled);
  90
  91                 return 0;
  92         }
  93         default:
  94                 return eWidget::event(event, data, data2);
  95         }
  96 }
  97
  98 void eSlider::setValue(int value)
  99 {
 100         m_value = value;
 101         event(evtChangedSlider);
 102 }
 103
 104 void eSlider::setStartEnd(int start, int end)
 105 {
 106         m_value = end;
 107         m_start = start;
 108         event(evtChangedSlider);
 109 }
 110
 111 void eSlider::setOrientation(int orientation)
 112 {
 113         m_orientation = orientation;
 114         event(evtChangedSlider);
 115 }
 116
 117 void eSlider::setRange(int min, int max)
 118 {
 119         m_min = min;
 120         m_max = max;
 121         event(evtChangedSlider);
 122 }