src/osx/cocoa/spinbutt.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        spinbutt.cpp
   3 // Purpose:     wxSpinButton
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id: spinbutt.cpp 54129 2008-06-11 19:30:52Z SC $
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_SPINBTN
  15
  16 #include "wx/spinbutt.h"
  17 #include "wx/osx/private.h"
  18
  19 @interface wxNSStepper : NSStepper
  20 {
  21 }
  22 @end
  23
  24 @implementation wxNSStepper
  25
  26 + (void)initialize
  27 {
  28     static BOOL initialized = NO;
  29     if (!initialized)
  30     {
  31         initialized = YES;
  32         wxOSXCocoaClassAddWXMethods(self);
  33     }
  34 }
  35
  36 @end
  37
  38 class wxSpinButtonCocoaImpl : public wxWidgetCocoaImpl
  39 {
  40 public :
  41     wxSpinButtonCocoaImpl(wxWindowMac* peer , WXWidget w) :
  42         wxWidgetCocoaImpl(peer, w)
  43     {
  44         m_formerValue = 0;
  45     }
  46
  47     ~wxSpinButtonCocoaImpl()
  48     {
  49     }
  50
  51     virtual void controlAction(WXWidget slf, void* _cmd, void *sender);
  52     virtual void mouseEvent(WX_NSEvent event, WXWidget slf, void* _cmd);
  53 private:
  54     int m_formerValue;
  55 };
  56
  57 void wxSpinButtonCocoaImpl::mouseEvent(WX_NSEvent event, WXWidget slf, void *_cmd)
  58 {
  59
  60     // send a release event in case we've been tracking the thumb
  61     if ( strcmp( sel_getName((SEL) _cmd) , "mouseDown:") == 0 )
  62     {
  63         m_formerValue = [(NSStepper*)m_osxView intValue];
  64     }
  65
  66     wxWidgetCocoaImpl::mouseEvent(event, slf, _cmd);
  67 }
  68
  69 void wxSpinButtonCocoaImpl::controlAction( WXWidget slf, void *_cmd, void *sender)
  70 {
  71     wxWindow* wxpeer = (wxWindow*) GetWXPeer();
  72     if ( wxpeer )
  73     {
  74         // because wx expects to be able to veto
  75         // a change we must revert the value change
  76         // and expose it
  77         int currentValue = [(NSStepper*)m_osxView intValue];
  78         [(NSStepper*)m_osxView setIntValue:m_formerValue];
  79         int inc = currentValue-m_formerValue;
  80
  81         // adjust for wrap arounds
  82         if ( inc > 1 )
  83             inc = -1;
  84         else if (inc < -1 )
  85             inc = 1;
  86
  87         if ( inc == 1 )
  88             wxpeer->TriggerScrollEvent(wxEVT_SCROLL_LINEUP);
  89         else if ( inc == -1 )
  90             wxpeer->TriggerScrollEvent(wxEVT_SCROLL_LINEDOWN);
  91
  92         m_formerValue = [(NSStepper*)m_osxView intValue];
  93     }
  94 }
  95
  96 wxWidgetImplType* wxWidgetImpl::CreateSpinButton( wxWindowMac* wxpeer,
  97                                     wxWindowMac* parent,
  98                                     wxWindowID id,
  99                                     wxInt32 value,
 100                                     wxInt32 minimum,
 101                                     wxInt32 maximum,
 102                                     const wxPoint& pos,
 103                                     const wxSize& size,
 104                                     long style,
 105                                     long extraStyle)
 106 {
 107     NSRect r = wxOSXGetFrameForControl( wxpeer, pos , size ) ;
 108     wxNSStepper* v = [[wxNSStepper alloc] initWithFrame:r];
 109
 110     [v setMinValue: minimum];
 111     [v setMaxValue: maximum];
 112     [v setIntValue: value];
 113
 114     if ( style & wxSP_WRAP )
 115         [v setValueWraps:YES];
 116
 117     wxWidgetCocoaImpl* c = new wxSpinButtonCocoaImpl( wxpeer, v );
 118     return c;
 119 }
 120
 121 #endif // wxUSE_SPINBTN