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     WXCOCOAIMPL_COMMON_MEMBERS
  27 }
  28
  29 WXCOCOAIMPL_COMMON_INTERFACE
  30
  31  - (void) clickedAction: (id) sender;
  32
  33 @end
  34
  35 @implementation wxNSScroller
  36
  37 - (id)initWithFrame:(NSRect)frame
  38 {
  39     [super initWithFrame:frame];
  40     impl = NULL;
  41     [self setTarget: self];
  42     [self setAction: @selector(clickedAction:)];
  43     return self;
  44 }
  45
  46 WXCOCOAIMPL_COMMON_IMPLEMENTATION_NO_MOUSEDOWN
  47
  48 // we will have a mouseDown, then in the native
  49 // implementation of mouseDown the tracking code
  50 // is calling clickedAction, therefore we wire this
  51 // to thumbtrack and only after super mouseDown
  52 // returns we will call the thumbrelease
  53
  54 - (void) clickedAction: (id) sender
  55 {
  56     if ( impl )
  57     {
  58         wxEventType scrollEvent = wxEVT_NULL;
  59         switch ([self hitPart])
  60         {
  61         case NSScrollerIncrementLine:
  62             scrollEvent = wxEVT_SCROLL_LINEDOWN;
  63             break;
  64         case NSScrollerIncrementPage:
  65             scrollEvent = wxEVT_SCROLL_PAGEDOWN;
  66             break;
  67         case NSScrollerDecrementLine:
  68             scrollEvent = wxEVT_SCROLL_LINEUP;
  69             break;
  70         case NSScrollerDecrementPage:
  71             scrollEvent = wxEVT_SCROLL_PAGEUP;
  72             break;
  73         case NSScrollerKnob:
  74         case NSScrollerKnobSlot:
  75             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
  76             break;
  77         case NSScrollerNoPart:
  78         default:
  79             return;
  80         }
  81
  82         wxWindow* wxpeer = (wxWindow*) impl->GetWXPeer();
  83         if ( wxpeer )
  84             wxpeer->TriggerScrollEvent(scrollEvent);
  85     }
  86 }
  87
  88 -(void)mouseDown:(NSEvent *)event
  89 {
  90     if ( !impl->DoHandleMouseEvent(event) )
  91         [super mouseDown:event];
  92
  93     // send a release event in case we've been tracking the thumb
  94     NSScrollerPart hit = [self hitPart];
  95     if ( impl && (hit == NSScrollerKnob || hit == NSScrollerKnobSlot) )
  96     {
  97         wxWindow* wxpeer = (wxWindow*) impl->GetWXPeer();
  98         if ( wxpeer )
  99             wxpeer->TriggerScrollEvent(wxEVT_SCROLL_THUMBRELEASE);
 100     }
 101 }
 102
 103 @end
 104
 105 class wxOSXScrollBarCocoaImpl : public wxWidgetCocoaImpl
 106 {
 107 public :
 108     wxOSXScrollBarCocoaImpl( wxWindowMac* peer, WXWidget w) : wxWidgetCocoaImpl( peer, w )
 109     {
 110         m_maximum = 1;
 111     }
 112
 113     void SetMaximum(wxInt32 v)
 114     {
 115         m_maximum = (v == 0) ? 1 : v;
 116     }
 117
 118     void    SetScrollThumb( wxInt32 value, wxInt32 thumbSize )
 119     {
 120         double v = ((double) value)/m_maximum;
 121         double t = ((double) thumbSize)/m_maximum;
 122 #if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
 123         [(wxNSScroller*) m_osxView setFloatValue:v knobProportion:t];
 124 #else
 125         [(wxNSScroller*) m_osxView setDoubleValue:v];
 126         [(wxNSScroller*) m_osxView setKnobProportion:t];
 127 #endif
 128     }
 129
 130     wxInt32 GetValue() const
 131     {
 132         return [(wxNSScroller*) m_osxView floatValue] * m_maximum;
 133     }
 134
 135     wxInt32 GetMaximum() const
 136     {
 137         return m_maximum;
 138     }
 139 protected:
 140     wxInt32 m_maximum;
 141 };
 142
 143 wxWidgetImplType* wxWidgetImpl::CreateScrollBar( wxWindowMac* wxpeer,
 144                                     wxWindowMac* parent,
 145                                     wxWindowID id,
 146                                     const wxPoint& pos,
 147                                     const wxSize& size,
 148                                     long style,
 149                                     long extraStyle)
 150 {
 151     NSRect r = wxOSXGetFrameForControl( wxpeer, pos , size ) ;
 152     wxNSScroller* v = [[wxNSScroller alloc] initWithFrame:r];
 153
 154     wxWidgetCocoaImpl* c = new wxOSXScrollBarCocoaImpl( wxpeer, v );
 155     [v setImplementation:c];
 156     [v setEnabled:YES];
 157     return c;
 158 }