src/osx/cocoa/scrolbar.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/cocoa/scrolbar.mm
   3 // Purpose:     wxScrollBar
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id: scrolbar.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 #include "wx/scrolbar.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/intl.h"
  18     #include "wx/log.h"
  19     #include "wx/settings.h"
  20 #endif
  21
  22 #include "wx/osx/private.h"
  23
  24 @interface wxNSScroller : NSScroller
  25 {
  26 }
  27 @end
  28
  29 @implementation wxNSScroller
  30
  31 + (void)initialize
  32 {
  33     static BOOL initialized = NO;
  34     if (!initialized)
  35     {
  36         initialized = YES;
  37         wxOSXCocoaClassAddWXMethods(self);
  38     }
  39 }
  40
  41 @end
  42
  43 class wxOSXScrollBarCocoaImpl : public wxWidgetCocoaImpl
  44 {
  45 public :
  46     wxOSXScrollBarCocoaImpl( wxWindowMac* peer, WXWidget w) : wxWidgetCocoaImpl( peer, w )
  47     {
  48         m_maximum = 1;
  49     }
  50
  51     void SetMaximum(wxInt32 v)
  52     {
  53         m_maximum = (v == 0) ? 1 : v;
  54     }
  55
  56     void    SetScrollThumb( wxInt32 value, wxInt32 thumbSize )
  57     {
  58         double v = ((double) value)/m_maximum;
  59         double t = ((double) thumbSize)/(m_maximum+thumbSize);
  60 #if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
  61         [(wxNSScroller*) m_osxView setFloatValue:v knobProportion:t];
  62 #else
  63         [(wxNSScroller*) m_osxView setDoubleValue:v];
  64         [(wxNSScroller*) m_osxView setKnobProportion:t];
  65 #endif
  66     }
  67
  68     virtual wxInt32 GetValue() const
  69     {
  70         return [(wxNSScroller*) m_osxView floatValue] * m_maximum;
  71     }
  72
  73     virtual wxInt32 GetMaximum() const
  74     {
  75         return m_maximum;
  76     }
  77
  78     virtual void controlAction(WXWidget slf, void* _cmd, void *sender);
  79     virtual void mouseEvent(WX_NSEvent event, WXWidget slf, void* _cmd);
  80 protected:
  81     wxInt32 m_maximum;
  82 };
  83
  84 // we will have a mouseDown, then in the native
  85 // implementation of mouseDown the tracking code
  86 // is calling clickedAction, therefore we wire this
  87 // to thumbtrack and only after super mouseDown
  88 // returns we will call the thumbrelease
  89
  90 void wxOSXScrollBarCocoaImpl::controlAction( WXWidget slf, void *_cmd, void *sender)
  91 {
  92     wxEventType scrollEvent = wxEVT_NULL;
  93     switch ([(NSScroller*)m_osxView hitPart])
  94     {
  95     case NSScrollerIncrementLine:
  96         scrollEvent = wxEVT_SCROLL_LINEDOWN;
  97         break;
  98     case NSScrollerIncrementPage:
  99         scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 100         break;
 101     case NSScrollerDecrementLine:
 102         scrollEvent = wxEVT_SCROLL_LINEUP;
 103         break;
 104     case NSScrollerDecrementPage:
 105         scrollEvent = wxEVT_SCROLL_PAGEUP;
 106         break;
 107     case NSScrollerKnob:
 108     case NSScrollerKnobSlot:
 109         scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 110         break;
 111     case NSScrollerNoPart:
 112     default:
 113         return;
 114     }
 115
 116     wxWindow* wxpeer = (wxWindow*) GetWXPeer();
 117     if ( wxpeer )
 118         wxpeer->TriggerScrollEvent(scrollEvent);
 119 }
 120
 121 void wxOSXScrollBarCocoaImpl::mouseEvent(WX_NSEvent event, WXWidget slf, void *_cmd)
 122 {
 123     wxWidgetCocoaImpl::mouseEvent(event, slf, _cmd);
 124
 125     // send a release event in case we've been tracking the thumb
 126     if ( strcmp( sel_getName((SEL) _cmd) , "mouseDown:") == 0 )
 127     {
 128         NSScrollerPart hit = [(NSScroller*)m_osxView hitPart];
 129         if ( (hit == NSScrollerKnob || hit == NSScrollerKnobSlot) )
 130         {
 131             wxWindow* wxpeer = (wxWindow*) GetWXPeer();
 132             if ( wxpeer )
 133                 wxpeer->OSXHandleClicked(0);
 134         }
 135     }
 136 }
 137
 138 wxWidgetImplType* wxWidgetImpl::CreateScrollBar( wxWindowMac* wxpeer,
 139                                     wxWindowMac* parent,
 140                                     wxWindowID id,
 141                                     const wxPoint& pos,
 142                                     const wxSize& size,
 143                                     long style,
 144                                     long extraStyle)
 145 {
 146     NSRect r = wxOSXGetFrameForControl( wxpeer, pos , size ) ;
 147     wxNSScroller* v = [[wxNSScroller alloc] initWithFrame:r];
 148
 149     wxWidgetCocoaImpl* c = new wxOSXScrollBarCocoaImpl( wxpeer, v );
 150     [v setEnabled:YES];
 151     return c;
 152 }