src/os2/scrolbar.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        scrolbar.cpp
   3 // Purpose:     wxScrollBar
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/15/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16 #include "wx/defs.h"
  17 #include "wx/utils.h"
  18 #endif
  19
  20 #include "wx/scrolbar.h"
  21 #include "wx/os2/private.h"
  22
  23 #if !USE_SHARED_LIBRARY
  24 IMPLEMENT_DYNAMIC_CLASS(wxScrollBar, wxControl)
  25
  26 BEGIN_EVENT_TABLE(wxScrollBar, wxControl)
  27 #if WXWIN_COMPATIBILITY
  28   EVT_SCROLL(wxScrollBar::OnScroll)
  29 #endif
  30 END_EVENT_TABLE()
  31
  32 #endif
  33
  34 // Scrollbar
  35 bool wxScrollBar::Create(wxWindow *parent, wxWindowID id,
  36            const wxPoint& pos,
  37            const wxSize& size, long style,
  38            const wxValidator& validator,
  39            const wxString& name)
  40 {
  41     if (!parent)
  42         return FALSE;
  43     parent->AddChild(this);
  44     SetName(name);
  45     SetValidator(validator);
  46
  47     SetBackgroundColour(parent->GetBackgroundColour()) ;
  48     SetForegroundColour(parent->GetForegroundColour()) ;
  49     m_windowStyle = style;
  50
  51     if ( id == -1 )
  52         m_windowId = (int)NewControlId();
  53     else
  54         m_windowId = id;
  55
  56     int x = pos.x;
  57     int y = pos.y;
  58     int width = size.x;
  59     int height = size.y;
  60
  61     if (width == -1)
  62     {
  63         if (style & wxHORIZONTAL)
  64             width = 140;
  65         else
  66             width = 14;
  67     }
  68     if (height == -1)
  69     {
  70         if (style & wxVERTICAL)
  71             height = 140;
  72         else
  73             height = 14;
  74     }
  75
  76     // TODO create scrollbar
  77
  78     m_pageSize = 1;
  79     m_viewSize = 1;
  80     m_objectSize = 1;
  81
  82     SetFont(parent->GetFont());
  83
  84     m_hWnd = 0; // TODO: (WXHWND)scroll_bar;
  85
  86     // Subclass again for purposes of dialog editing mode
  87     SubclassWin((WXHWND) scroll_bar);
  88
  89     SetSize(x, y, width, height);
  90
  91     return TRUE;
  92 }
  93
  94 wxScrollBar::~wxScrollBar()
  95 {
  96 }
  97
  98 bool wxScrollBar::OS2OnScroll(int WXUNUSED(orientation), WXWORD wParam,
  99                               WXWORD pos, WXHWND control)
 100 {
 101     // TODO:
 102 /*
 103     int position = ::GetScrollPos((HWND) control, SB_CTL);
 104     int minPos, maxPos;
 105     ::GetScrollRange((HWND) control, SB_CTL, &minPos, &maxPos);
 106
 107 #if defined(__WIN95__)
 108     // A page size greater than one has the effect of reducing the effective
 109     // range, therefore the range has already been boosted artificially - so
 110     // reduce it again.
 111     if ( m_pageSize > 1 )
 112         maxPos -= (m_pageSize - 1);
 113 #endif // __WIN95__
 114
 115     wxEventType scrollEvent = wxEVT_NULL;
 116
 117     int nScrollInc;
 118     switch ( wParam )
 119     {
 120         case SB_TOP:
 121             nScrollInc = maxPos - position;
 122             scrollEvent = wxEVT_SCROLL_TOP;
 123             break;
 124
 125         case SB_BOTTOM:
 126             nScrollInc = - position;
 127             scrollEvent = wxEVT_SCROLL_BOTTOM;
 128             break;
 129
 130         case SB_LINEUP:
 131             nScrollInc = -1;
 132             scrollEvent = wxEVT_SCROLL_LINEUP;
 133             break;
 134
 135         case SB_LINEDOWN:
 136             nScrollInc = 1;
 137             scrollEvent = wxEVT_SCROLL_LINEDOWN;
 138             break;
 139
 140         case SB_PAGEUP:
 141             nScrollInc = -GetPageSize();
 142             scrollEvent = wxEVT_SCROLL_PAGEUP;
 143             break;
 144
 145         case SB_PAGEDOWN:
 146             nScrollInc = GetPageSize();
 147             scrollEvent = wxEVT_SCROLL_PAGEDOWN;
 148             break;
 149
 150         case SB_THUMBTRACK:
 151         case SB_THUMBPOSITION:
 152             nScrollInc = pos - position;
 153             scrollEvent = wxEVT_SCROLL_THUMBTRACK;
 154             break;
 155
 156         default:
 157             nScrollInc = 0;
 158     }
 159
 160     if ( nScrollInc == 0 )
 161     {
 162         // no event to process, so don't process it
 163         return FALSE;
 164     }
 165
 166     int new_pos = position + nScrollInc;
 167
 168     if (new_pos < 0)
 169         new_pos = 0;
 170     if (new_pos > maxPos)
 171         new_pos = maxPos;
 172
 173     SetThumbPosition(new_pos);
 174     wxScrollEvent event(scrollEvent, m_windowId);
 175     event.SetPosition(new_pos);
 176     event.SetEventObject( this );
 177
 178     return GetEventHandler()->ProcessEvent(event);
 179 */
 180     return FALSE;
 181 }
 182
 183 void wxScrollBar::SetThumbPosition(int viewStart)
 184 {
 185     // TODO
 186 }
 187
 188 int wxScrollBar::GetThumbPosition() const
 189 {
 190     // TODO
 191     return 0;
 192 }
 193
 194 void wxScrollBar::SetScrollbar(int position, int thumbSize, int range, int pageSize,
 195     bool refresh)
 196 {
 197     m_viewSize = pageSize;
 198     m_pageSize = thumbSize;
 199     m_objectSize = range;
 200
 201     // TODO
 202 }
 203
 204 #if WXWIN_COMPATIBILITY
 205 void wxScrollBar::SetPageSize(int pageLength)
 206 {
 207     m_pageSize = pageLength;
 208
 209     // TODO:
 210 }
 211
 212 void wxScrollBar::SetObjectLength(int objectLength)
 213 {
 214     m_objectSize = objectLength;
 215
 216     // The range (number of scroll steps) is the
 217     // object length minus the view size.
 218     int range = wxMax((objectLength - m_viewSize), 0) ;
 219
 220     // TODO:
 221 }
 222
 223 void wxScrollBar::SetViewLength(int viewLength)
 224 {
 225     m_viewSize = viewLength;
 226 }
 227
 228 void wxScrollBar::GetValues(int *viewStart, int *viewLength, int *objectLength,
 229            int *pageLength) const
 230 {
 231 // TODO:
 232 /*
 233     *viewStart = ::GetScrollPos((HWND)m_hWnd, SB_CTL);
 234     *viewLength = m_viewSize;
 235     *objectLength = m_objectSize;
 236     *pageLength = m_pageSize;
 237 */
 238 }
 239 #endif
 240
 241 WXHBRUSH wxScrollBar::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
 242             WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
 243 {
 244   return 0;
 245 }
 246
 247 void wxScrollBar::Command(wxCommandEvent& event)
 248 {
 249     SetThumbPosition(event.m_commandInt);
 250     ProcessCommand(event);
 251 }
 252
 253 #if WXWIN_COMPATIBILITY
 254 // Backward compatibility
 255 void wxScrollBar::OnScroll(wxScrollEvent& event)
 256 {
 257     // TODO:
 258 /*
 259     wxEventType oldEvent = event.GetEventType();
 260     event.SetEventType( wxEVT_COMMAND_SCROLLBAR_UPDATED );
 261     if ( !GetEventHandler()->ProcessEvent(event) )
 262     {
 263         event.SetEventType( oldEvent );
 264         if (!GetParent()->GetEventHandler()->ProcessEvent(event))
 265             event.Skip();
 266     }
 267 */
 268 }
 269 #endif