src/osx/cocoa/spinbutt.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/cocoa/spinbutt.mm
   3 // Purpose:     wxSpinButton
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // Copyright:   (c) Stefan Csomor
   8 // Licence:       wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_SPINBTN
  14
  15 #include "wx/spinbutt.h"
  16 #include "wx/osx/private.h"
  17
  18 @interface wxNSStepper : NSStepper
  19 {
  20 }
  21 @end
  22
  23 @implementation wxNSStepper
  24
  25 + (void)initialize
  26 {
  27     static BOOL initialized = NO;
  28     if (!initialized)
  29     {
  30         initialized = YES;
  31         wxOSXCocoaClassAddWXMethods(self);
  32     }
  33 }
  34
  35 @end
  36
  37 class wxSpinButtonCocoaImpl : public wxWidgetCocoaImpl
  38 {
  39 public :
  40     wxSpinButtonCocoaImpl(wxWindowMac* peer , WXWidget w) :
  41         wxWidgetCocoaImpl(peer, w)
  42     {
  43         m_formerValue = 0;
  44     }
  45
  46     ~wxSpinButtonCocoaImpl()
  47     {
  48     }
  49
  50     virtual void controlAction(WXWidget slf, void* _cmd, void *sender);
  51     virtual void mouseEvent(WX_NSEvent event, WXWidget slf, void* _cmd);
  52 private:
  53     int m_formerValue;
  54 };
  55
  56 void wxSpinButtonCocoaImpl::mouseEvent(WX_NSEvent event, WXWidget slf, void *_cmd)
  57 {
  58
  59     // send a release event in case we've been tracking the thumb
  60     if ( strcmp( sel_getName((SEL) _cmd) , "mouseDown:") == 0 )
  61     {
  62         m_formerValue = [(NSStepper*)m_osxView intValue];
  63     }
  64
  65     wxWidgetCocoaImpl::mouseEvent(event, slf, _cmd);
  66 }
  67
  68 void wxSpinButtonCocoaImpl::controlAction( WXWidget WXUNUSED(slf), void *WXUNUSED(_cmd), void *WXUNUSED(sender))
  69 {
  70     wxWindow* wxpeer = (wxWindow*) GetWXPeer();
  71     if ( wxpeer )
  72     {
  73         // because wx expects to be able to veto
  74         // a change we must revert the value change
  75         // and expose it
  76         int currentValue = [(NSStepper*)m_osxView intValue];
  77         [(NSStepper*)m_osxView setIntValue:m_formerValue];
  78         int inc = currentValue-m_formerValue;
  79
  80         // adjust for wrap arounds
  81         if ( inc > 1 )
  82             inc = -1;
  83         else if (inc < -1 )
  84             inc = 1;
  85
  86         if ( inc == 1 )
  87             wxpeer->TriggerScrollEvent(wxEVT_SCROLL_LINEUP);
  88         else if ( inc == -1 )
  89             wxpeer->TriggerScrollEvent(wxEVT_SCROLL_LINEDOWN);
  90
  91         m_formerValue = [(NSStepper*)m_osxView intValue];
  92     }
  93 }
  94
  95 wxWidgetImplType* wxWidgetImpl::CreateSpinButton( wxWindowMac* wxpeer,
  96                                     wxWindowMac* WXUNUSED(parent),
  97                                     wxWindowID WXUNUSED(id),
  98                                     wxInt32 value,
  99                                     wxInt32 minimum,
 100                                     wxInt32 maximum,
 101                                     const wxPoint& pos,
 102                                     const wxSize& size,
 103                                     long style,
 104                                     long WXUNUSED(extraStyle))
 105 {
 106     NSRect r = wxOSXGetFrameForControl( wxpeer, pos , size ) ;
 107     wxNSStepper* v = [[wxNSStepper alloc] initWithFrame:r];
 108
 109     [v setMinValue: minimum];
 110     [v setMaxValue: maximum];
 111     [v setIntValue: value];
 112
 113     if ( style & wxSP_HORIZONTAL )
 114         [v rotateByAngle:90.0];
 115
 116     BOOL wrap = NO;
 117     if ( style & wxSP_WRAP )
 118         wrap = YES;
 119     [v setValueWraps:wrap];
 120
 121     wxWidgetCocoaImpl* c = new wxSpinButtonCocoaImpl( wxpeer, v );
 122     return c;
 123 }
 124
 125 #endif // wxUSE_SPINBTN