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(this) ;
  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
  89
  90 void wxScrollBar::Command(wxCommandEvent& event)
  91 {
  92     SetThumbPosition(event.GetInt());
  93     ProcessCommand(event);
  94 }
  95
  96 void wxScrollBar::MacHandleControlClick( WXWidget control , wxInt16 controlpart , bool mouseStillDown )
  97 {
  98     int position = m_peer->GetValue() ;
  99     int minPos = m_peer->GetMinimum() ;
 100     int maxPos = m_peer->GetMaximum() ;
 101
 102     wxEventType scrollEvent = wxEVT_NULL;
 103     int nScrollInc = 0;
 104
 105     // all events have already been reported during mouse down, except for THUMBRELEASE
 106     if ( !mouseStillDown && controlpart !=kControlIndicatorPart )
 107         return ;
 108
 109     switch( controlpart )
 110     {
 111     case kControlUpButtonPart :
 112         nScrollInc = -1;
 113         scrollEvent = wxEVT_SCROLL_LINEUP;
 114         break ;
 115     case kControlDownButtonPart :
 116         nScrollInc = 1;
 117         scrollEvent = wxEVT_SCROLL_LINEDOWN;
 118         break ;
 119     case kControlPageUpPart :
 120         nScrollInc = -m_pageSize;
 121         scrollEvent = wxEVT_SCROLL_PAGEUP;
 122         break ;
 123     case kControlPageDownPart :
 124         nScrollInc = m_pageSize;
 125         scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 126         break ;
 127     case kControlIndicatorPart :
 128         nScrollInc = 0 ;
 129         if ( mouseStillDown )
 130             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 131         else
 132             scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 133         break ;
 134     default :
 135         wxFAIL_MSG(wxT("illegal scrollbar selector"));
 136         break ;
 137     }
 138
 139     int new_pos = position + nScrollInc;
 140
 141     if (new_pos < minPos)
 142         new_pos = minPos;
 143     if (new_pos > maxPos)
 144         new_pos = maxPos;
 145     if ( nScrollInc )
 146         SetThumbPosition(new_pos);
 147
 148     wxScrollEvent event(scrollEvent, m_windowId);
 149     if ( m_windowStyle & wxHORIZONTAL )
 150     {
 151         event.SetOrientation( wxHORIZONTAL ) ;
 152     }
 153     else
 154     {
 155         event.SetOrientation( wxVERTICAL ) ;
 156     }
 157     event.SetPosition(new_pos);
 158     event.SetEventObject( this );
 159     wxWindow* window = GetParent() ;
 160     if (window && window->MacIsWindowScrollbar(this) )
 161     {
 162         // this is hardcoded
 163         window->MacOnScroll(event);
 164     }
 165     else
 166         GetEventHandler()->ProcessEvent(event);
 167 }
 168
 169 wxInt32 wxScrollBar::MacControlHit( WXEVENTHANDLERREF handler , WXEVENTREF mevent )
 170 {
 171     int position = m_peer->GetValue() ;
 172     int minPos = m_peer->GetMinimum() ;
 173     int maxPos = m_peer->GetMaximum() ;
 174
 175     wxEventType scrollEvent = wxEVT_NULL;
 176     int nScrollInc = 0;
 177
 178     wxMacCarbonEvent cEvent( (EventRef) mevent ) ;
 179     ControlPartCode controlpart = cEvent.GetParameter<ControlPartCode>(kEventParamControlPart,typeControlPartCode) ;
 180
 181     // all events have already been reported during mouse down, except for THUMBRELEASE
 182     if ( controlpart !=kControlIndicatorPart )
 183         return eventNotHandledErr ;
 184
 185     switch( controlpart )
 186     {
 187     case kControlIndicatorPart :
 188         nScrollInc = 0 ;
 189         scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 190         break ;
 191     default :
 192         wxFAIL_MSG(wxT("illegal scrollbar selector"));
 193         break ;
 194     }
 195
 196     int new_pos = position + nScrollInc;
 197
 198     if (new_pos < minPos)
 199         new_pos = minPos;
 200     if (new_pos > maxPos)
 201         new_pos = maxPos;
 202     if ( nScrollInc )
 203         SetThumbPosition(new_pos);
 204
 205     wxScrollEvent event(scrollEvent, m_windowId);
 206     if ( m_windowStyle & wxHORIZONTAL )
 207     {
 208         event.SetOrientation( wxHORIZONTAL ) ;
 209     }
 210     else
 211     {
 212         event.SetOrientation( wxVERTICAL ) ;
 213     }
 214     event.SetPosition(new_pos);
 215     event.SetEventObject( this );
 216     wxWindow* window = GetParent() ;
 217     if (window && window->MacIsWindowScrollbar(this) )
 218     {
 219         // this is hardcoded
 220         window->MacOnScroll(event);
 221     }
 222     else
 223         GetEventHandler()->ProcessEvent(event);
 224     return noErr ;
 225 }
 226
 227