void wxSlider::SetValue( int value )
{
double fpos = (double)value;
m_oldPos = fpos;
if ( AreSameAdjustValues(fpos, m_adjust->value) )
return;
m_adjust->value = fpos;
GtkDisableEvents();
gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" );
GtkEnableEvents();
}
static void gtk_slider_callback( GtkAdjustment *adjust,
SCROLLBAR_CBACK_ARG
wxSlider *win )
{
if (g_isIdle) wxapp_install_idle_handler();
if (!win->m_hasVMT) return;
if (g_blockEventsOnDrag) return;
const double dvalue = adjust->value;
const double diff = dvalue - win->m_oldPos;
if ( AreSameAdjustValues(diff, 0) )
return;
wxEventType evtType;
evtType = GtkScrollTypeToWx(GET_SCROLL_TYPE(win->m_widget));
ProcessScrollEvent(win, evtType, dvalue);
win->m_oldPos = dvalue;
}
static void gtk_slider_callback( GtkAdjustment *adjust,
SCROLLBAR_CBACK_ARG
wxSlider *win )
{
if (g_isIdle) wxapp_install_idle_handler();
if (!win->m_hasVMT) return;
if (g_blockEventsOnDrag) return;
const double dvalue = adjust->value;
const double diff = dvalue - win->m_oldPos;
if ( AreSameAdjustValues(diff, 0) )
return;
wxEventType evtType;
if ( win->m_isScrolling )
evtType = wxEVT_SCROLL_THUMBTRACK;
// it could seem that UP/DOWN are inversed but this is what wxMSW does
else if ( AreSameAdjustValues(diff, adjust->step_increment) )
evtType = wxEVT_SCROLL_LINEDOWN;
else if ( AreSameAdjustValues(diff, -adjust->step_increment) )
evtType = wxEVT_SCROLL_LINEUP;
else if ( AreSameAdjustValues(diff, adjust->page_increment) )
evtType = wxEVT_SCROLL_PAGEDOWN;
else if ( AreSameAdjustValues(diff, -adjust->page_increment) )
evtType = wxEVT_SCROLL_PAGEUP;
else if ( AreSameAdjustValues(adjust->value, adjust->lower) )
evtType = wxEVT_SCROLL_TOP;
else if ( AreSameAdjustValues(adjust->value, adjust->upper) )
evtType = wxEVT_SCROLL_BOTTOM;
else
evtType = wxEVT_NULL; // wxEVT_SCROLL_CHANGED will still be generated
ProcessScrollEvent(win, evtType, dvalue);
win->m_oldPos = dvalue;
}