src/mac/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 #ifndef WX_PRECOMP
  15     #include "wx/intl.h"
  16     #include "wx/log.h"
  17 #endif
  18
  19 #include "wx/settings.h"
  20 #include "wx/scrolbar.h"
  21 #include "wx/mac/uma.h"
  22
  23 IMPLEMENT_DYNAMIC_CLASS(wxScrollBar, wxControl)
  24
  25 BEGIN_EVENT_TABLE(wxScrollBar, wxControl)
  26 END_EVENT_TABLE()
  27
  28
  29 bool wxScrollBar::Create( wxWindow *parent,
  30     wxWindowID id,
  31     const wxPoint& pos,
  32     const wxSize& size,
  33     long style,
  34     const wxValidator& validator,
  35     const wxString& name )
  36 {
  37     m_macIsUserPane = false;
  38
  39     if ( !wxControl::Create( parent, id, pos, size, style, validator, name ) )
  40         return false;
  41
  42     Rect bounds = wxMacGetBoundsForControl( this, pos, size );
  43
  44     m_peer = new wxMacControl( this );
  45     OSStatus err = CreateScrollBarControl(
  46         MAC_WXHWND(parent->MacGetTopLevelWindowRef()), &bounds,
  47         0, 0, 100, 1, true /* liveTracking */,
  48         GetwxMacLiveScrollbarActionProc(),
  49         m_peer->GetControlRefAddr() );
  50     verify_noerr( err );
  51
  52     MacPostControlCreate( pos, size );
  53
  54     return true;
  55 }
  56
  57 wxScrollBar::~wxScrollBar()
  58 {
  59 }
  60
  61 void wxScrollBar::SetThumbPosition( int viewStart )
  62 {
  63     m_peer->SetValue( viewStart );
  64 }
  65
  66 int wxScrollBar::GetThumbPosition() const
  67 {
  68     return m_peer->GetValue();
  69 }
  70
  71 void wxScrollBar::SetScrollbar( int position, int thumbSize, int range, int pageSize, bool refresh )
  72 {
  73     m_pageSize = pageSize;
  74     m_viewSize = thumbSize;
  75     m_objectSize = range;
  76
  77    int range1 = wxMax( (m_objectSize - m_viewSize), 0 );
  78
  79     m_peer->SetMinimum( 0 );
  80     m_peer->SetMaximum( range1 );
  81     m_peer->SetValue( position );
  82     m_peer->SetViewSize( m_viewSize );
  83 }
  84
  85 void wxScrollBar::Command( wxCommandEvent& event )
  86 {
  87     SetThumbPosition( event.GetInt() );
  88     ProcessCommand( event );
  89 }
  90
  91 void wxScrollBar::MacHandleControlClick( WXWidget control, wxInt16 controlpart, bool mouseStillDown )
  92 {
  93     int position = m_peer->GetValue();
  94     int minPos = m_peer->GetMinimum();
  95     int maxPos = m_peer->GetMaximum();
  96
  97     wxEventType scrollEvent = wxEVT_NULL;
  98     int nScrollInc = 0;
  99
 100     // all events have already been reported during mouse down, except for THUMBRELEASE
 101     if ( !mouseStillDown && controlpart != kControlIndicatorPart )
 102         return;
 103
 104     switch ( controlpart )
 105     {
 106     case kControlUpButtonPart:
 107         nScrollInc = -1;
 108         scrollEvent = wxEVT_SCROLL_LINEUP;
 109         break;
 110
 111     case kControlDownButtonPart:
 112         nScrollInc = 1;
 113         scrollEvent = wxEVT_SCROLL_LINEDOWN;
 114         break;
 115
 116     case kControlPageUpPart:
 117         nScrollInc = -m_pageSize;
 118         scrollEvent = wxEVT_SCROLL_PAGEUP;
 119         break;
 120
 121     case kControlPageDownPart:
 122         nScrollInc = m_pageSize;
 123         scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 124         break;
 125
 126     case kControlIndicatorPart:
 127         nScrollInc = 0;
 128         if ( mouseStillDown )
 129             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 130         else
 131             scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 132         break;
 133
 134     default:
 135         wxFAIL_MSG(wxT("unknown scrollbar selector"));
 136         break;
 137     }
 138
 139     int new_pos = position + nScrollInc;
 140
 141     if (new_pos < minPos)
 142         new_pos = minPos;
 143     else if (new_pos > maxPos)
 144         new_pos = maxPos;
 145
 146     if ( nScrollInc )
 147         SetThumbPosition( new_pos );
 148
 149     wxScrollEvent event( scrollEvent, m_windowId );
 150     if ( m_windowStyle & wxHORIZONTAL )
 151         event.SetOrientation( wxHORIZONTAL );
 152     else
 153         event.SetOrientation( wxVERTICAL );
 154
 155     event.SetPosition( new_pos );
 156     event.SetEventObject( this );
 157
 158     wxWindow* window = GetParent();
 159     if (window && window->MacIsWindowScrollbar( this ))
 160         // this is hardcoded
 161         window->MacOnScroll( event );
 162     else
 163         GetEventHandler()->ProcessEvent( event );
 164 }
 165
 166 wxInt32 wxScrollBar::MacControlHit( WXEVENTHANDLERREF handler, WXEVENTREF mevent )
 167 {
 168     int position = m_peer->GetValue();
 169     int minPos = m_peer->GetMinimum();
 170     int maxPos = m_peer->GetMaximum();
 171
 172     wxEventType scrollEvent = wxEVT_NULL;
 173     int nScrollInc = 0;
 174
 175     wxMacCarbonEvent cEvent( (EventRef)mevent );
 176     ControlPartCode controlpart = cEvent.GetParameter<ControlPartCode>(kEventParamControlPart, typeControlPartCode);
 177
 178     // all events have already been reported during mouse down, except for THUMBRELEASE
 179     // NB: this may need to be reviewed in light of the fact that scroll wheel events
 180     // aren't being handled properly
 181     if ( controlpart != kControlIndicatorPart )
 182         return eventNotHandledErr;
 183
 184     switch ( controlpart )
 185     {
 186     case kControlIndicatorPart:
 187         nScrollInc = 0;
 188         scrollEvent = wxEVT_SCROLL_THUMBRELEASE;
 189         break;
 190
 191     default:
 192         wxFAIL_MSG(wxT("unknown scrollbar selector"));
 193         break;
 194     }
 195
 196     int new_pos = position + nScrollInc;
 197
 198     if (new_pos < minPos)
 199         new_pos = minPos;
 200     else if (new_pos > maxPos)
 201         new_pos = maxPos;
 202
 203     if ( nScrollInc )
 204         SetThumbPosition( new_pos );
 205
 206     wxScrollEvent event( scrollEvent, m_windowId );
 207     if ( m_windowStyle & wxHORIZONTAL )
 208         event.SetOrientation( wxHORIZONTAL );
 209     else
 210         event.SetOrientation( wxVERTICAL );
 211
 212     event.SetPosition( new_pos );
 213     event.SetEventObject( this );
 214     wxWindow* window = GetParent();
 215     if (window && window->MacIsWindowScrollbar( this ))
 216         // this is hardcoded
 217         window->MacOnScroll( event );
 218     else
 219         GetEventHandler()->ProcessEvent( event );
 220
 221     return noErr;
 222 }
 223
 224
 225 wxSize wxScrollBar::DoGetBestSize() const
 226 {
 227     int w = 100;
 228     int h = 100;
 229
 230     if ( IsVertical() )
 231     {
 232         w = wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
 233     }
 234     else
 235     {
 236         h = wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y);
 237     }
 238
 239     wxSize best(w, h);
 240     CacheBestSize(best);
 241     return best;
 242 }