src/osx/scrolbar_osx.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/scrolbar_osx.cpp
   3 // Purpose:     wxScrollBar
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // Copyright:   (c) Stefan Csomor
   8 // Licence:       wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/scrolbar.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/intl.h"
  17     #include "wx/log.h"
  18     #include "wx/settings.h"
  19 #endif
  20
  21 #include "wx/osx/private.h"
  22
  23 #if wxUSE_SCROLLBAR
  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     DontCreatePeer();
  38
  39     if ( !wxControl::Create( parent, id, pos, size, style, validator, name ) )
  40         return false;
  41
  42     SetPeer(wxWidgetImpl::CreateScrollBar( this, parent, id, pos, size, style, GetExtraStyle() ));
  43
  44     MacPostControlCreate( pos, size );
  45
  46     return true;
  47 }
  48
  49 wxScrollBar::~wxScrollBar()
  50 {
  51 }
  52
  53 void wxScrollBar::SetThumbPosition( int viewStart )
  54 {
  55     GetPeer()->SetScrollThumb( viewStart, m_viewSize );
  56 }
  57
  58 int wxScrollBar::GetThumbPosition() const
  59 {
  60     return GetPeer()->GetValue();
  61 }
  62
  63 void wxScrollBar::SetScrollbar( int position,
  64                                 int thumbSize,
  65                                 int range,
  66                                 int pageSize,
  67                                 bool WXUNUSED(refresh) )
  68 {
  69     m_pageSize = pageSize;
  70     m_viewSize = thumbSize;
  71     m_objectSize = range;
  72
  73    int range1 = wxMax( (m_objectSize - m_viewSize), 0 );
  74
  75    GetPeer()->SetMaximum( range1 );
  76    GetPeer()->SetScrollThumb( position, m_viewSize );
  77 }
  78
  79 void wxScrollBar::Command( wxCommandEvent& event )
  80 {
  81     SetThumbPosition( event.GetInt() );
  82     ProcessCommand( event );
  83 }
  84
  85 bool wxScrollBar::OSXHandleClicked( double WXUNUSED(timestampsec) )
  86 {
  87     int new_pos = GetPeer()->GetValue();
  88
  89     wxScrollEvent event( wxEVT_SCROLL_THUMBRELEASE, m_windowId );
  90     if ( m_windowStyle & wxHORIZONTAL )
  91         event.SetOrientation( wxHORIZONTAL );
  92     else
  93         event.SetOrientation( wxVERTICAL );
  94
  95     event.SetPosition( new_pos );
  96     event.SetEventObject( this );
  97     wxWindow* window = GetParent();
  98     if (window && window->MacIsWindowScrollbar( this ))
  99         // this is hardcoded
 100         window->MacOnScroll( event );
 101     else
 102         HandleWindowEvent( event );
 103
 104     return true;
 105 }
 106
 107
 108 wxSize wxScrollBar::DoGetBestSize() const
 109 {
 110     int w = 100;
 111     int h = 100;
 112
 113     if ( IsVertical() )
 114     {
 115         w = wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
 116     }
 117     else
 118     {
 119         h = wxSystemSettings::GetMetric(wxSYS_HSCROLL_Y);
 120     }
 121
 122     wxSize best(w, h);
 123     CacheBestSize(best);
 124     return best;
 125 }
 126
 127 void wxScrollBar::TriggerScrollEvent( wxEventType scrollEvent )
 128 {
 129     int position = GetPeer()->GetValue();
 130     int minPos = 0 ;
 131     int maxPos = GetPeer()->GetMaximum();
 132     int nScrollInc = 0;
 133
 134     if ( scrollEvent == wxEVT_SCROLL_LINEUP )
 135     {
 136         nScrollInc = -1;
 137     }
 138     else if ( scrollEvent == wxEVT_SCROLL_LINEDOWN )
 139     {
 140         nScrollInc = 1;
 141     }
 142     else if ( scrollEvent == wxEVT_SCROLL_PAGEUP )
 143     {
 144         nScrollInc = -m_pageSize;
 145     }
 146     else if ( scrollEvent == wxEVT_SCROLL_PAGEDOWN )
 147     {
 148         nScrollInc = m_pageSize;
 149     }
 150
 151     int new_pos = position + nScrollInc;
 152
 153     if (new_pos < minPos)
 154         new_pos = minPos;
 155     else if (new_pos > maxPos)
 156         new_pos = maxPos;
 157
 158     if ( nScrollInc )
 159         SetThumbPosition( new_pos );
 160
 161     wxScrollEvent event( scrollEvent, m_windowId );
 162     if ( m_windowStyle & wxHORIZONTAL )
 163         event.SetOrientation( wxHORIZONTAL );
 164     else
 165         event.SetOrientation( wxVERTICAL );
 166
 167     event.SetPosition( new_pos );
 168     event.SetEventObject( this );
 169
 170     wxWindow* window = GetParent();
 171     if (window && window->MacIsWindowScrollbar( this ))
 172         // this is hardcoded
 173         window->MacOnScroll( event );
 174     else
 175         HandleWindowEvent( event );
 176 }
 177
 178 #endif