src/osx/cocoa/slider.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/cocoa/slider.mm
   3 // Purpose:     wxSlider
   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_SLIDER
  14
  15 #include "wx/slider.h"
  16 #include "wx/osx/private.h"
  17
  18 @interface wxNSSlider : NSSlider
  19 {
  20 }
  21 @end
  22
  23 @implementation wxNSSlider
  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 wxSliderCocoaImpl : public wxWidgetCocoaImpl
  38 {
  39 public :
  40     wxSliderCocoaImpl(wxWindowMac* peer , WXWidget w) :
  41         wxWidgetCocoaImpl(peer, w)
  42     {
  43     }
  44
  45     ~wxSliderCocoaImpl()
  46     {
  47     }
  48
  49     virtual void controlAction(WXWidget slf, void* _cmd, void *sender);
  50     virtual void mouseEvent(WX_NSEvent event, WXWidget slf, void* _cmd);
  51 };
  52
  53 // we will have a mouseDown, then in the native
  54 // implementation of mouseDown the tracking code
  55 // is calling clickedAction, therefore we wire this
  56 // to thumbtrack and only after super mouseDown
  57 // returns we will call the thumbrelease
  58
  59 void wxSliderCocoaImpl::controlAction( WXWidget WXUNUSED(slf), void *WXUNUSED(_cmd), void *WXUNUSED(sender))
  60 {
  61     wxWindow* wxpeer = (wxWindow*) GetWXPeer();
  62     if ( wxpeer )
  63         wxpeer->TriggerScrollEvent(wxEVT_SCROLL_THUMBTRACK);
  64 }
  65
  66 void wxSliderCocoaImpl::mouseEvent(WX_NSEvent event, WXWidget slf, void *_cmd)
  67 {
  68     wxWidgetCocoaImpl::mouseEvent(event, slf, _cmd);
  69
  70     if ( strcmp( sel_getName((SEL) _cmd) , "mouseDown:") == 0 )
  71     {
  72         wxWindow* wxpeer = (wxWindow*) GetWXPeer();
  73         if ( wxpeer )
  74             wxpeer->OSXHandleClicked(0);
  75     }
  76 }
  77
  78
  79
  80 wxWidgetImplType* wxWidgetImpl::CreateSlider( wxWindowMac* wxpeer,
  81                                     wxWindowMac* WXUNUSED(parent),
  82                                     wxWindowID WXUNUSED(id),
  83                                     wxInt32 value,
  84                                     wxInt32 minimum,
  85                                     wxInt32 maximum,
  86                                     const wxPoint& pos,
  87                                     const wxSize& size,
  88                                     long style,
  89                                     long WXUNUSED(extraStyle))
  90 {
  91     NSRect r = wxOSXGetFrameForControl( wxpeer, pos , size ) ;
  92     if ( size == wxDefaultSize )
  93     {
  94         if ( style & wxSL_VERTICAL )
  95             r.size.height = r.size.width * 2;
  96         else
  97             r.size.width = r.size.height * 2;
  98     }
  99     wxNSSlider* v = [[wxNSSlider alloc] initWithFrame:r];
 100
 101     int tickMarks = 0;
 102     if ( style & wxSL_AUTOTICKS )
 103     {
 104         tickMarks = (maximum - minimum) + 1; // +1 for the 0 value
 105
 106         // keep the number of tickmarks from becoming unwieldly, therefore below it is ok to cast
 107         // it to a UInt16
 108         while (tickMarks > 20)
 109             tickMarks /= 5;
 110
 111         [v setNumberOfTickMarks:tickMarks];
 112         [v setTickMarkPosition:NSTickMarkBelow];
 113     }
 114
 115     [v setMinValue: minimum];
 116     [v setMaxValue: maximum];
 117     [v setFloatValue: (double) value];
 118     wxWidgetCocoaImpl* c = new wxSliderCocoaImpl( wxpeer, v );
 119     return c;
 120 }
 121
 122 #endif // wxUSE_SLIDER