src/osx/carbon/scrolbar.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/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 #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/uma.h"
  23
  24 IMPLEMENT_DYNAMIC_CLASS(wxScrollBar, wxControl)
  25
  26 BEGIN_EVENT_TABLE(wxScrollBar, wxControl)
  27 END_EVENT_TABLE()
  28
  29
  30 bool wxScrollBar::Create( wxWindow *parent,
  31     wxWindowID id,
  32     const wxPoint& pos,
  33     const wxSize& size,
  34     long style,
  35     const wxValidator& validator,
  36     const wxString& name )
  37 {
  38     m_macIsUserPane = false;
  39
  40     if ( !wxControl::Create( parent, id, pos, size, style, validator, name ) )
  41         return false;
  42
  43     Rect bounds = wxMacGetBoundsForControl( this, pos, size );
  44
  45     m_peer = new wxMacControl( this );
  46     OSStatus err = CreateScrollBarControl(
  47         MAC_WXHWND(parent->MacGetTopLevelWindowRef()), &bounds,
  48         0, 0, 100, 1, true /* liveTracking */,
  49         GetwxMacLiveScrollbarActionProc(),
  50         m_peer->GetControlRefAddr() );
  51     verify_noerr( err );
  52
  53     MacPostControlCreate( pos, size );
  54
  55     return true;
  56 }
  57
  58 wxScrollBar::~wxScrollBar()
  59 {
  60 }
  61
  62 void wxScrollBar::SetThumbPosition( int viewStart )
  63 {
  64     m_peer->SetValue( viewStart );
  65 }
  66
  67 int wxScrollBar::GetThumbPosition() const
  68 {
  69     return m_peer->GetValue();
  70 }
  71
  72 void wxScrollBar::SetScrollbar( int position,
  73                                 int thumbSize,
  74                                 int range,
  75                                 int pageSize,
  76                                 bool WXUNUSED(refresh) )
  77 {
  78     m_pageSize = pageSize;
  79     m_viewSize = thumbSize;
  80     m_objectSize = range;
  81
  82    int range1 = wxMax( (m_objectSize - m_viewSize), 0 );
  83
  84     m_peer->SetMinimum( 0 );
  85     m_peer->SetMaximum( range1 );
  86     m_peer->SetValue( position );
  87     m_peer->SetViewSize( m_viewSize );
  88 }
  89
  90 void wxScrollBar::Command( wxCommandEvent& event )
  91 {
  92     SetThumbPosition( event.GetInt() );
  93     ProcessCommand( event );
  94 }
  95
  96 void wxScrollBar::MacHandleControlClick( WXWidget WXUNUSED(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
 116     case kControlDownButtonPart:
 117         nScrollInc = 1;
 118         scrollEvent = wxEVT_SCROLL_LINEDOWN;
 119         break;
 120
 121     case kControlPageUpPart:
 122         nScrollInc = -m_pageSize;
 123         scrollEvent = wxEVT_SCROLL_PAGEUP;
 124         break;
 125
 126     case kControlPageDownPart:
 127         nScrollInc = m_pageSize;
 128         scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 129         break;
 130
 131     case kControlIndicatorPart:
 132         nScrollInc = 0;
 133         if ( mouseStillDown )
 134             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 135         else
 136             scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 137         break;
 138
 139     default:
 140         wxFAIL_MSG(wxT("unknown scrollbar selector"));
 141         break;
 142     }
 143
 144     int new_pos = position + nScrollInc;
 145
 146     if (new_pos < minPos)
 147         new_pos = minPos;
 148     else if (new_pos > maxPos)
 149         new_pos = maxPos;
 150
 151     if ( nScrollInc )
 152         SetThumbPosition( new_pos );
 153
 154     wxScrollEvent event( scrollEvent, m_windowId );
 155     if ( m_windowStyle & wxHORIZONTAL )
 156         event.SetOrientation( wxHORIZONTAL );
 157     else
 158         event.SetOrientation( wxVERTICAL );
 159
 160     event.SetPosition( new_pos );
 161     event.SetEventObject( this );
 162
 163     wxWindow* window = GetParent();
 164     if (window && window->MacIsWindowScrollbar( this ))
 165         // this is hardcoded
 166         window->MacOnScroll( event );
 167     else
 168         HandleWindowEvent( event );
 169 }
 170
 171 wxInt32 wxScrollBar::MacControlHit( WXEVENTHANDLERREF WXUNUSED(handler), WXEVENTREF mevent )
 172 {
 173     int position = m_peer->GetValue();
 174     int minPos = m_peer->GetMinimum();
 175     int maxPos = m_peer->GetMaximum();
 176
 177     wxEventType scrollEvent = wxEVT_NULL;
 178     int nScrollInc = 0;
 179
 180     wxMacCarbonEvent cEvent( (EventRef)mevent );
 181     ControlPartCode controlpart = cEvent.GetParameter<ControlPartCode>(kEventParamControlPart, typeControlPartCode);
 182
 183     // all events have already been reported during mouse down, except for THUMBRELEASE
 184     // NB: this may need to be reviewed in light of the fact that scroll wheel events
 185     // aren't being handled properly
 186     if ( controlpart != kControlIndicatorPart )
 187         return eventNotHandledErr;
 188
 189     switch ( controlpart )
 190     {
 191     case kControlIndicatorPart:
 192         nScrollInc = 0;
 193         scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 194         break;
 195
 196     default:
 197         wxFAIL_MSG(wxT("unknown scrollbar selector"));
 198         break;
 199     }
 200
 201     int new_pos = position + nScrollInc;
 202
 203     if (new_pos < minPos)
 204         new_pos = minPos;
 205     else if (new_pos > maxPos)
 206         new_pos = maxPos;
 207
 208     if ( nScrollInc )
 209         SetThumbPosition( new_pos );
 210
 211     wxScrollEvent event( scrollEvent, m_windowId );
 212     if ( m_windowStyle & wxHORIZONTAL )
 213         event.SetOrientation( wxHORIZONTAL );
 214     else
 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         // this is hardcoded
 222         window->MacOnScroll( event );
 223     else
 224         HandleWindowEvent( event );
 225
 226     return noErr;
 227 }
 228
 229
 230 wxSize wxScrollBar::DoGetBestSize() const
 231 {
 232     int w = 100;
 233     int h = 100;
 234
 235     if ( IsVertical() )
 236     {
 237         w = wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
 238     }
 239     else
 240     {
 241         h = wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y);
 242     }
 243
 244     wxSize best(w, h);
 245     CacheBestSize(best);
 246     return best;
 247 }