src/mac/carbon/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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "scrolbar.h"
  14 #endif
  15
  16 #include "wx/wxprec.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     m_macIsUserPane = FALSE ;
  44
  45     if ( !wxControl::Create(parent, id, pos, size, style, validator, name) )
  46         return FALSE;
  47
  48     Rect bounds = wxMacGetBoundsForControl( this , pos , size ) ;
  49
  50     m_peer = new wxMacControl() ;
  51     verify_noerr ( CreateScrollBarControl( MAC_WXHWND(parent->MacGetTopLevelWindowRef()) , &bounds ,
  52     0 , 0 , 100 , 1 , true /* liveTracking */ , wxMacLiveScrollbarActionUPP , m_peer->GetControlRefAddr() ) );
  53
  54
  55     MacPostControlCreate(pos,size) ;
  56
  57     return TRUE;
  58 }
  59
  60 wxScrollBar::~wxScrollBar()
  61 {
  62 }
  63
  64 void wxScrollBar::SetThumbPosition(int viewStart)
  65 {
  66     m_peer->SetValue( viewStart ) ;
  67 }
  68
  69 int wxScrollBar::GetThumbPosition() const
  70 {
  71     return m_peer->GetValue() ;
  72 }
  73
  74 void wxScrollBar::SetScrollbar(int position, int thumbSize, int range, int pageSize,
  75     bool refresh)
  76 {
  77     m_pageSize = pageSize;
  78     m_viewSize = thumbSize;
  79     m_objectSize = range;
  80
  81    int range1 = wxMax((m_objectSize - m_viewSize), 0) ;
  82
  83     m_peer->SetMaximum( range1 ) ;
  84     m_peer->SetMinimum( 0 ) ;
  85     m_peer->SetValue( position ) ;
  86     m_peer->SetViewSize( m_viewSize ) ;
  87
  88     if ( refresh )
  89       MacRedrawControl() ;
  90 }
  91
  92
  93 void wxScrollBar::Command(wxCommandEvent& event)
  94 {
  95     SetThumbPosition(event.GetInt());
  96     ProcessCommand(event);
  97 }
  98
  99 void wxScrollBar::MacHandleControlClick( WXWidget control , wxInt16 controlpart , bool mouseStillDown )
 100 {
 101     int position = m_peer->GetValue() ;
 102     int minPos = m_peer->GetMinimum() ;
 103     int maxPos = m_peer->GetMaximum() ;
 104
 105     wxEventType scrollEvent = wxEVT_NULL;
 106     int nScrollInc = 0;
 107
 108     // all events have already been reported during mouse down, except for THUMBRELEASE
 109     if ( !mouseStillDown && controlpart !=kControlIndicatorPart )
 110         return ;
 111
 112     switch( controlpart )
 113     {
 114     case kControlUpButtonPart :
 115         nScrollInc = -1;
 116         scrollEvent = wxEVT_SCROLL_LINEUP;
 117         break ;
 118     case kControlDownButtonPart :
 119         nScrollInc = 1;
 120         scrollEvent = wxEVT_SCROLL_LINEDOWN;
 121         break ;
 122     case kControlPageUpPart :
 123         nScrollInc = -m_pageSize;
 124         scrollEvent = wxEVT_SCROLL_PAGEUP;
 125         break ;
 126     case kControlPageDownPart :
 127         nScrollInc = m_pageSize;
 128         scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 129         break ;
 130     case kControlIndicatorPart :
 131         nScrollInc = 0 ;
 132         if ( mouseStillDown )
 133             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 134         else
 135             scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 136         break ;
 137     default :
 138         wxFAIL_MSG(wxT("illegal scrollbar selector"));
 139         break ;
 140     }
 141
 142     int new_pos = position + nScrollInc;
 143
 144     if (new_pos < minPos)
 145         new_pos = minPos;
 146     if (new_pos > maxPos)
 147         new_pos = maxPos;
 148     if ( nScrollInc )
 149         SetThumbPosition(new_pos);
 150
 151     wxScrollEvent event(scrollEvent, m_windowId);
 152     if ( m_windowStyle & wxHORIZONTAL )
 153     {
 154         event.SetOrientation( wxHORIZONTAL ) ;
 155     }
 156     else
 157     {
 158         event.SetOrientation( wxVERTICAL ) ;
 159     }
 160     event.SetPosition(new_pos);
 161     event.SetEventObject( this );
 162     wxWindow* window = GetParent() ;
 163     if (window && window->MacIsWindowScrollbar(this) )
 164     {
 165         // this is hardcoded
 166         window->MacOnScroll(event);
 167     }
 168     else
 169         GetEventHandler()->ProcessEvent(event);
 170 }
 171
 172 wxInt32 wxScrollBar::MacControlHit( WXEVENTHANDLERREF handler , WXEVENTREF mevent )
 173 {
 174     int position = m_peer->GetValue() ;
 175     int minPos = m_peer->GetMinimum() ;
 176     int maxPos = m_peer->GetMaximum() ;
 177
 178     wxEventType scrollEvent = wxEVT_NULL;
 179     int nScrollInc = 0;
 180
 181     wxMacCarbonEvent cEvent( (EventRef) mevent ) ;
 182     ControlPartCode controlpart = cEvent.GetParameter<ControlPartCode>(kEventParamControlPart,typeControlPartCode) ;
 183
 184     // all events have already been reported during mouse down, except for THUMBRELEASE
 185     if ( controlpart !=kControlIndicatorPart )
 186         return eventNotHandledErr ;
 187
 188     switch( controlpart )
 189     {
 190     case kControlIndicatorPart :
 191         nScrollInc = 0 ;
 192         scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 193         break ;
 194     default :
 195         wxFAIL_MSG(wxT("illegal scrollbar selector"));
 196         break ;
 197     }
 198
 199     int new_pos = position + nScrollInc;
 200
 201     if (new_pos < minPos)
 202         new_pos = minPos;
 203     if (new_pos > maxPos)
 204         new_pos = maxPos;
 205     if ( nScrollInc )
 206         SetThumbPosition(new_pos);
 207
 208     wxScrollEvent event(scrollEvent, m_windowId);
 209     if ( m_windowStyle & wxHORIZONTAL )
 210     {
 211         event.SetOrientation( wxHORIZONTAL ) ;
 212     }
 213     else
 214     {
 215         event.SetOrientation( wxVERTICAL ) ;
 216     }
 217     event.SetPosition(new_pos);
 218     event.SetEventObject( this );
 219     wxWindow* window = GetParent() ;
 220     if (window && window->MacIsWindowScrollbar(this) )
 221     {
 222         // this is hardcoded
 223         window->MacOnScroll(event);
 224     }
 225     else
 226         GetEventHandler()->ProcessEvent(event);
 227     return noErr ;
 228 }
 229
 230