src/mac/classic/scrolbar.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        scrolbar.cpp
   3 // Purpose:     wxScrollBar
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "scrolbar.h"
  14 #endif
  15
  16 #include "wx/defs.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/intl.h"
  20     #include "wx/log.h"
  21 #endif // WX_PRECOMP
  22
  23 #include "wx/scrolbar.h"
  24 #include "wx/mac/uma.h"
  25
  26 #if !USE_SHARED_LIBRARY
  27 IMPLEMENT_DYNAMIC_CLASS(wxScrollBar, wxControl)
  28
  29 BEGIN_EVENT_TABLE(wxScrollBar, wxControl)
  30 END_EVENT_TABLE()
  31
  32 #endif
  33
  34 extern ControlActionUPP wxMacLiveScrollbarActionUPP ;
  35
  36 // Scrollbar
  37 bool wxScrollBar::Create(wxWindow *parent, wxWindowID id,
  38            const wxPoint& pos,
  39            const wxSize& size, long style,
  40            const wxValidator& validator,
  41            const wxString& name)
  42 {
  43     if ( !wxControl::Create(parent, id, pos, size, style, validator, name) )
  44         return FALSE;
  45
  46     Rect bounds ;
  47     Str255 title ;
  48
  49     MacPreControlCreate( parent , id ,  wxEmptyString , pos , size ,style, validator , name , &bounds , title ) ;
  50
  51     m_macControl = ::NewControl(MAC_WXHWND(parent->MacGetRootWindow()) ,
  52                                 &bounds , title , false , 0 , 0 , 100,
  53                                 kControlScrollBarLiveProc , (long) this) ;
  54
  55     wxASSERT_MSG( (ControlHandle) m_macControl != NULL , wxT("No valid mac control") ) ;
  56
  57     ::SetControlAction( (ControlHandle) m_macControl , wxMacLiveScrollbarActionUPP ) ;
  58
  59     MacPostControlCreate() ;
  60
  61     return TRUE;
  62 }
  63
  64 wxScrollBar::~wxScrollBar()
  65 {
  66 }
  67
  68 void wxScrollBar::SetThumbPosition(int viewStart)
  69 {
  70     ::SetControl32BitValue( (ControlHandle) m_macControl , viewStart ) ;
  71 }
  72
  73 int wxScrollBar::GetThumbPosition() const
  74 {
  75     return ::GetControl32BitValue( (ControlHandle) m_macControl ) ;
  76 }
  77
  78 void wxScrollBar::SetScrollbar(int position, int thumbSize, int range, int pageSize,
  79     bool refresh)
  80 {
  81     m_pageSize = pageSize;
  82     m_viewSize = thumbSize;
  83     m_objectSize = range;
  84
  85       int range1 = wxMax((m_objectSize - m_viewSize), 0) ;
  86
  87     SetControl32BitMaximum( (ControlHandle) m_macControl , range1 ) ;
  88     SetControl32BitMinimum( (ControlHandle) m_macControl , 0 ) ;
  89     SetControl32BitValue( (ControlHandle) m_macControl , position ) ;
  90
  91     if ( UMAGetAppearanceVersion() >= 0x0110  )
  92     {
  93         if ( SetControlViewSize != (void*) kUnresolvedCFragSymbolAddress )
  94         {
  95                 SetControlViewSize( (ControlHandle) m_macControl , m_viewSize ) ;
  96         }
  97     }
  98     if ( refresh )
  99       MacRedrawControl() ;
 100 }
 101
 102
 103 void wxScrollBar::Command(wxCommandEvent& event)
 104 {
 105     SetThumbPosition(event.m_commandInt);
 106     ProcessCommand(event);
 107 }
 108
 109 void wxScrollBar::MacHandleControlClick( WXWidget control , wxInt16 controlpart , bool mouseStillDown )
 110 {
 111     if ( (ControlHandle) m_macControl == NULL )
 112         return ;
 113
 114     int position = GetControl32BitValue( (ControlHandle) m_macControl) ;
 115     int minPos = GetControl32BitMinimum( (ControlHandle) m_macControl) ;
 116     int maxPos = GetControl32BitMaximum( (ControlHandle) m_macControl) ;
 117
 118     wxEventType scrollEvent = wxEVT_NULL;
 119     int nScrollInc = 0;
 120
 121     // all events have already been reported during mouse down, except for THUMBRELEASE
 122     if ( !mouseStillDown && controlpart !=kControlIndicatorPart )
 123         return ;
 124
 125     switch( controlpart )
 126     {
 127     case kControlUpButtonPart :
 128         nScrollInc = -1;
 129         scrollEvent = wxEVT_SCROLL_LINEUP;
 130         break ;
 131     case kControlDownButtonPart :
 132         nScrollInc = 1;
 133         scrollEvent = wxEVT_SCROLL_LINEDOWN;
 134         break ;
 135     case kControlPageUpPart :
 136         nScrollInc = -m_pageSize;
 137         scrollEvent = wxEVT_SCROLL_PAGEUP;
 138         break ;
 139     case kControlPageDownPart :
 140         nScrollInc = m_pageSize;
 141         scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 142         break ;
 143     case kControlIndicatorPart :
 144         nScrollInc = 0 ;
 145         if ( mouseStillDown )
 146             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 147         else
 148             scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 149         break ;
 150     default :
 151         wxFAIL_MSG(wxT("illegal scrollbar selector"));
 152         break ;
 153     }
 154
 155     int new_pos = position + nScrollInc;
 156
 157     if (new_pos < minPos)
 158         new_pos = minPos;
 159     if (new_pos > maxPos)
 160         new_pos = maxPos;
 161     if ( nScrollInc )
 162         SetThumbPosition(new_pos);
 163
 164     wxScrollEvent event(scrollEvent, m_windowId);
 165     if ( m_windowStyle & wxHORIZONTAL )
 166     {
 167         event.SetOrientation( wxHORIZONTAL ) ;
 168     }
 169     else
 170     {
 171         event.SetOrientation( wxVERTICAL ) ;
 172     }
 173     event.SetPosition(new_pos);
 174     event.SetEventObject( this );
 175     wxWindow* window = GetParent() ;
 176     if (window && window->MacIsWindowScrollbar(this) )
 177     {
 178         // this is hardcoded
 179         window->MacOnScroll(event);
 180     }
 181     else
 182         GetEventHandler()->ProcessEvent(event);
 183 }
 184