src/osx/carbon/slider.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/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 class wxMacSliderCarbonControl : public wxMacControl
  20 {
  21 public :
  22     wxMacSliderCarbonControl( wxWindowMac* peer ) : wxMacControl( peer )
  23     {
  24     }
  25
  26     // work around an OSX bug : if the control is having the keyboard focus it cannot
  27     // be set to the full max/min values by dragging
  28     virtual bool CanFocus() const
  29     {
  30         return false;
  31     }
  32 };
  33
  34
  35 wxWidgetImplType* wxWidgetImpl::CreateSlider( wxWindowMac* wxpeer,
  36                                     wxWindowMac* parent,
  37                                     wxWindowID WXUNUSED(id),
  38                                     wxInt32 value,
  39                                     wxInt32 minimum,
  40                                     wxInt32 maximum,
  41                                     const wxPoint& pos,
  42                                     const wxSize& size,
  43                                     long style,
  44                                     long WXUNUSED(extraStyle))
  45 {
  46     Rect bounds = wxMacGetBoundsForControl( wxpeer, pos, size );
  47     int tickMarks = 0;
  48     if ( style & wxSL_AUTOTICKS )
  49         tickMarks = (maximum - minimum) + 1; // +1 for the 0 value
  50
  51     // keep the number of tickmarks from becoming unwieldy, therefore below it is ok to cast
  52     // it to a UInt16
  53     while (tickMarks > 20)
  54         tickMarks /= 5;
  55
  56
  57     wxMacControl* peer = new wxMacSliderCarbonControl( wxpeer );
  58     OSStatus err = CreateSliderControl(
  59         MAC_WXHWND(parent->MacGetTopLevelWindowRef()), &bounds,
  60         value, minimum, maximum,
  61         kControlSliderPointsDownOrRight,
  62         (UInt16) tickMarks, true /* liveTracking */,
  63         GetwxMacLiveScrollbarActionProc(),
  64         peer->GetControlRefAddr() );
  65     verify_noerr( err );
  66
  67     return peer;
  68 }
  69
  70 #endif // wxUSE_SLIDER