src/osx/carbon/slider.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        slider.cpp
   3 // Purpose:     wxSlider
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_SLIDER
  15
  16 #include "wx/slider.h"
  17 #include "wx/osx/private.h"
  18
  19 wxWidgetImplType* wxWidgetImpl::CreateSlider( wxWindowMac* wxpeer,
  20                                     wxWindowMac* parent,
  21                                     wxWindowID WXUNUSED(id),
  22                                     wxInt32 value,
  23                                     wxInt32 minimum,
  24                                     wxInt32 maximum,
  25                                     const wxPoint& pos,
  26                                     const wxSize& size,
  27                                     long style,
  28                                     long WXUNUSED(extraStyle))
  29 {
  30     Rect bounds = wxMacGetBoundsForControl( wxpeer, pos, size );
  31     int tickMarks = 0;
  32     if ( style & wxSL_AUTOTICKS )
  33         tickMarks = (maximum - minimum) + 1; // +1 for the 0 value
  34
  35     // keep the number of tickmarks from becoming unwieldly, therefore below it is ok to cast
  36     // it to a UInt16
  37     while (tickMarks > 20)
  38         tickMarks /= 5;
  39
  40
  41     wxMacControl* peer = new wxMacControl( wxpeer );
  42     OSStatus err = CreateSliderControl(
  43         MAC_WXHWND(parent->MacGetTopLevelWindowRef()), &bounds,
  44         value, minimum, maximum,
  45         kControlSliderPointsDownOrRight,
  46         (UInt16) tickMarks, true /* liveTracking */,
  47         GetwxMacLiveScrollbarActionProc(),
  48         peer->GetControlRefAddr() );
  49     verify_noerr( err );
  50
  51     return peer;
  52 }
  53
  54 #endif // wxUSE_SLIDER