src/osx/scrolbar_osx.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/scrolbar.cpp
   3 // Purpose:     wxScrollBar
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id: scrolbar.cpp 54129 2008-06-11 19:30:52Z SC $
   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/private.h"
  23
  24 #if wxUSE_SCROLLBAR
  25
  26 IMPLEMENT_DYNAMIC_CLASS(wxScrollBar, wxControl)
  27
  28 BEGIN_EVENT_TABLE(wxScrollBar, wxControl)
  29 END_EVENT_TABLE()
  30
  31
  32 bool wxScrollBar::Create( wxWindow *parent,
  33     wxWindowID id,
  34     const wxPoint& pos,
  35     const wxSize& size,
  36     long style,
  37     const wxValidator& validator,
  38     const wxString& name )
  39 {
  40     m_macIsUserPane = false;
  41
  42     if ( !wxControl::Create( parent, id, pos, size, style, validator, name ) )
  43         return false;
  44
  45     m_peer = wxWidgetImpl::CreateScrollBar( this, parent, id, pos, size, style, GetExtraStyle() );
  46
  47     MacPostControlCreate( pos, size );
  48
  49     return true;
  50 }
  51
  52 wxScrollBar::~wxScrollBar()
  53 {
  54 }
  55
  56 void wxScrollBar::SetThumbPosition( int viewStart )
  57 {
  58     m_peer->SetScrollThumb( viewStart, m_viewSize );
  59 }
  60
  61 int wxScrollBar::GetThumbPosition() const
  62 {
  63     return m_peer->GetValue();
  64 }
  65
  66 void wxScrollBar::SetScrollbar( int position,
  67                                 int thumbSize,
  68                                 int range,
  69                                 int pageSize,
  70                                 bool WXUNUSED(refresh) )
  71 {
  72     m_pageSize = pageSize;
  73     m_viewSize = thumbSize;
  74     m_objectSize = range;
  75
  76    int range1 = wxMax( (m_objectSize - m_viewSize), 0 );
  77
  78    m_peer->SetMaximum( range1 );
  79    m_peer->SetScrollThumb( position, m_viewSize );
  80 }
  81
  82 void wxScrollBar::Command( wxCommandEvent& event )
  83 {
  84     SetThumbPosition( event.GetInt() );
  85     ProcessCommand( event );
  86 }
  87
  88 bool wxScrollBar::OSXHandleClicked( double WXUNUSED(timestampsec) )
  89 {
  90     int new_pos = m_peer->GetValue();
  91
  92     wxScrollEvent event( wxEVT_SCROLL_THUMBRELEASE, m_windowId );
  93     if ( m_windowStyle & wxHORIZONTAL )
  94         event.SetOrientation( wxHORIZONTAL );
  95     else
  96         event.SetOrientation( wxVERTICAL );
  97
  98     event.SetPosition( new_pos );
  99     event.SetEventObject( this );
 100     wxWindow* window = GetParent();
 101     if (window && window->MacIsWindowScrollbar( this ))
 102         // this is hardcoded
 103         window->MacOnScroll( event );
 104     else
 105         HandleWindowEvent( event );
 106
 107     return true;
 108 }
 109
 110
 111 wxSize wxScrollBar::DoGetBestSize() const
 112 {
 113     int w = 100;
 114     int h = 100;
 115
 116     if ( IsVertical() )
 117     {
 118         w = wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
 119     }
 120     else
 121     {
 122         h = wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y);
 123     }
 124
 125     wxSize best(w, h);
 126     CacheBestSize(best);
 127     return best;
 128 }
 129
 130 void wxScrollBar::TriggerScrollEvent( wxEventType scrollEvent )
 131 {
 132     int position = m_peer->GetValue();
 133     int minPos = 0 ;
 134     int maxPos = m_peer->GetMaximum();
 135     int nScrollInc = 0;
 136
 137     if ( scrollEvent == wxEVT_SCROLL_LINEUP )
 138     {
 139         nScrollInc = -1;
 140     }
 141     else if ( scrollEvent == wxEVT_SCROLL_LINEDOWN )
 142     {
 143         nScrollInc = 1;
 144     }
 145     else if ( scrollEvent == wxEVT_SCROLL_PAGEUP )
 146     {
 147         nScrollInc = -m_pageSize;
 148     }
 149     else if ( scrollEvent == wxEVT_SCROLL_PAGEDOWN )
 150     {
 151         nScrollInc = m_pageSize;
 152     }
 153
 154     int new_pos = position + nScrollInc;
 155
 156     if (new_pos < minPos)
 157         new_pos = minPos;
 158     else if (new_pos > maxPos)
 159         new_pos = maxPos;
 160
 161     if ( nScrollInc )
 162         SetThumbPosition( new_pos );
 163
 164     wxScrollEvent event( scrollEvent, m_windowId );
 165     if ( m_windowStyle & wxHORIZONTAL )
 166         event.SetOrientation( wxHORIZONTAL );
 167     else
 168         event.SetOrientation( wxVERTICAL );
 169
 170     event.SetPosition( new_pos );
 171     event.SetEventObject( this );
 172
 173     wxWindow* window = GetParent();
 174     if (window && window->MacIsWindowScrollbar( this ))
 175         // this is hardcoded
 176         window->MacOnScroll( event );
 177     else
 178         HandleWindowEvent( event );
 179 }
 180
 181 #endif