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 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     m_peer = wxWidgetImpl::CreateScrollBar( this, parent, id, pos, size, style, GetExtraStyle() );
  44
  45     MacPostControlCreate( pos, size );
  46
  47     return true;
  48 }
  49
  50 wxScrollBar::~wxScrollBar()
  51 {
  52 }
  53
  54 void wxScrollBar::SetThumbPosition( int viewStart )
  55 {
  56     m_peer->SetScrollThumb( viewStart, m_viewSize );
  57 }
  58
  59 int wxScrollBar::GetThumbPosition() const
  60 {
  61     return m_peer->GetValue();
  62 }
  63
  64 void wxScrollBar::SetScrollbar( int position,
  65                                 int thumbSize,
  66                                 int range,
  67                                 int pageSize,
  68                                 bool WXUNUSED(refresh) )
  69 {
  70     m_pageSize = pageSize;
  71     m_viewSize = thumbSize;
  72     m_objectSize = range;
  73
  74    int range1 = wxMax( (m_objectSize - m_viewSize), 0 );
  75
  76    m_peer->SetMaximum( range1 );
  77    m_peer->SetScrollThumb( position, m_viewSize );
  78 }
  79
  80 void wxScrollBar::Command( wxCommandEvent& event )
  81 {
  82     SetThumbPosition( event.GetInt() );
  83     ProcessCommand( event );
  84 }
  85
  86 bool wxScrollBar::OSXHandleClicked( double WXUNUSED(timestampsec) )
  87 {
  88     int new_pos = m_peer->GetValue();
  89
  90     wxScrollEvent event( wxEVT_SCROLL_THUMBRELEASE, m_windowId );
  91     if ( m_windowStyle & wxHORIZONTAL )
  92         event.SetOrientation( wxHORIZONTAL );
  93     else
  94         event.SetOrientation( wxVERTICAL );
  95
  96     event.SetPosition( new_pos );
  97     event.SetEventObject( this );
  98     wxWindow* window = GetParent();
  99     if (window && window->MacIsWindowScrollbar( this ))
 100         // this is hardcoded
 101         window->MacOnScroll( event );
 102     else
 103         HandleWindowEvent( event );
 104
 105     return true;
 106 }
 107
 108
 109 wxSize wxScrollBar::DoGetBestSize() const
 110 {
 111     int w = 100;
 112     int h = 100;
 113
 114     if ( IsVertical() )
 115     {
 116         w = wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
 117     }
 118     else
 119     {
 120         h = wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y);
 121     }
 122
 123     wxSize best(w, h);
 124     CacheBestSize(best);
 125     return best;
 126 }
 127
 128 void wxScrollBar::TriggerScrollEvent( wxEventType scrollEvent )
 129 {
 130     int position = m_peer->GetValue();
 131     int minPos = 0 ;
 132     int maxPos = m_peer->GetMaximum();
 133     int nScrollInc = 0;
 134
 135     if ( scrollEvent == wxEVT_SCROLL_LINEUP )
 136     {
 137         nScrollInc = -1;
 138     }
 139     else if ( scrollEvent == wxEVT_SCROLL_LINEDOWN )
 140     {
 141         nScrollInc = 1;
 142     }
 143     else if ( scrollEvent == wxEVT_SCROLL_PAGEUP )
 144     {
 145         nScrollInc = -m_pageSize;
 146     }
 147     else if ( scrollEvent == wxEVT_SCROLL_PAGEDOWN )
 148     {
 149         nScrollInc = m_pageSize;
 150     }
 151
 152     int new_pos = position + nScrollInc;
 153
 154     if (new_pos < minPos)
 155         new_pos = minPos;
 156     else if (new_pos > maxPos)
 157         new_pos = maxPos;
 158
 159     if ( nScrollInc )
 160         SetThumbPosition( new_pos );
 161
 162     wxScrollEvent event( scrollEvent, m_windowId );
 163     if ( m_windowStyle & wxHORIZONTAL )
 164         event.SetOrientation( wxHORIZONTAL );
 165     else
 166         event.SetOrientation( wxVERTICAL );
 167
 168     event.SetPosition( new_pos );
 169     event.SetEventObject( this );
 170
 171     wxWindow* window = GetParent();
 172     if (window && window->MacIsWindowScrollbar( this ))
 173         // this is hardcoded
 174         window->MacOnScroll( event );
 175     else
 176         HandleWindowEvent( event );
 177 }