src/os2/control.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        control.cpp
   3 // Purpose:     wxControl class
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     09/17/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "control.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifndef WX_PRECOMP
  20 #include "wx/event.h"
  21 #include "wx/app.h"
  22 #include "wx/dcclient.h"
  23 #endif
  24 #include "wx/os2/private.h"
  25 #include "wx/control.h"
  26
  27 IMPLEMENT_ABSTRACT_CLASS(wxControl, wxWindow)
  28
  29 BEGIN_EVENT_TABLE(wxControl, wxWindow)
  30     EVT_ERASE_BACKGROUND(wxControl::OnEraseBackground)
  31 END_EVENT_TABLE()
  32
  33 // Item members
  34 wxControl::wxControl()
  35 {
  36   m_backgroundColour = *wxWHITE;
  37   m_foregroundColour = *wxBLACK;
  38
  39 #if WXWIN_COMPATIBILITY
  40   m_callback = 0;
  41 #endif // WXWIN_COMPATIBILITY
  42 }
  43
  44 wxControl::~wxControl()
  45 {
  46     m_isBeingDeleted = TRUE;
  47 }
  48
  49 bool wxControl::OS2CreateControl(const wxChar *classname, WXDWORD style)
  50 {
  51     m_hWnd = (WXHWND)::WinCreateWindow( GetHwndOf(GetParent())
  52                                        ,classname
  53                                        ,NULL
  54                                        ,style
  55                                        ,0,0,0,0
  56                                        ,NULLHANDLE
  57                                        ,HWND_TOP
  58                                        ,(HMENU)GetId()
  59                                        ,NULL
  60                                        ,NULL
  61                                       );
  62
  63
  64     if ( !m_hWnd )
  65     {
  66 #ifdef __WXDEBUG__
  67         wxLogError(wxT("Failed to create a control of class '%s'"), classname);
  68 #endif // DEBUG
  69
  70         return FALSE;
  71     }
  72
  73     // subclass again for purposes of dialog editing mode
  74     SubclassWin(m_hWnd);
  75
  76     // controls use the same font and colours as their parent dialog by default
  77     InheritAttributes();
  78
  79     return TRUE;
  80 }
  81
  82 wxSize wxControl::DoGetBestSize() const
  83 {
  84     return wxSize(DEFAULT_ITEM_WIDTH, DEFAULT_ITEM_HEIGHT);
  85 }
  86
  87 bool wxControl::ProcessCommand(wxCommandEvent& event)
  88 {
  89 #if WXWIN_COMPATIBILITY
  90     if ( m_callback )
  91     {
  92         (void)(*m_callback)(this, event);
  93
  94         return TRUE;
  95     }
  96     else
  97 #endif // WXWIN_COMPATIBILITY
  98
  99     return GetEventHandler()->ProcessEvent(event);
 100 }
 101
 102 bool wxControl::OS2OnNotify(int idCtrl,
 103                             WXLPARAM lParam,
 104                             WXLPARAM* result)
 105 {
 106     wxCommandEvent event(wxEVT_NULL, m_windowId);
 107     wxEventType eventType = wxEVT_NULL;
 108 /* TODO:
 109     NMHDR *hdr1 = (NMHDR*) lParam;
 110     switch ( hdr1->code )
 111     {
 112         case NM_CLICK:
 113             eventType = wxEVT_COMMAND_LEFT_CLICK;
 114             break;
 115
 116         case NM_DBLCLK:
 117             eventType = wxEVT_COMMAND_LEFT_DCLICK;
 118             break;
 119
 120         case NM_RCLICK:
 121             eventType = wxEVT_COMMAND_RIGHT_CLICK;
 122             break;
 123
 124         case NM_RDBLCLK:
 125             eventType = wxEVT_COMMAND_RIGHT_DCLICK;
 126             break;
 127
 128         case NM_SETFOCUS:
 129             eventType = wxEVT_COMMAND_SET_FOCUS;
 130             break;
 131
 132         case NM_KILLFOCUS:
 133             eventType = wxEVT_COMMAND_KILL_FOCUS;
 134             break;
 135
 136         case NM_RETURN:
 137             eventType = wxEVT_COMMAND_ENTER;
 138             break;
 139
 140         default:
 141             return wxWindow::OS2OnNotify(idCtrl, lParam, result);
 142     }
 143 */
 144     event.SetEventType(eventType);
 145     event.SetEventObject(this);
 146
 147     return GetEventHandler()->ProcessEvent(event);
 148 }
 149
 150 void wxControl::OnEraseBackground(wxEraseEvent& event)
 151 {
 152     // In general, you don't want to erase the background of a control,
 153     // or you'll get a flicker.
 154     // TODO: move this 'null' function into each control that
 155     // might flicker.
 156
 157     RECT rect;
 158 /*
 159 * below is msw code.
 160 * TODO: convert to PM Code
 161 *   ::GetClientRect((HWND) GetHWND(), &rect);
 162 *
 163 *   HBRUSH hBrush = ::CreateSolidBrush(PALETTERGB(GetBackgroundColour().Red(),
 164 *                                                 GetBackgroundColour().Green(),
 165 *                                                 GetBackgroundColour().Blue()));
 166 *   int mode = ::SetMapMode((HDC) event.GetDC()->GetHDC(), MM_TEXT);
 167 *
 168 *   ::FillRect ((HDC) event.GetDC()->GetHDC(), &rect, hBrush);
 169 *   ::DeleteObject(hBrush);
 170 *   ::SetMapMode((HDC) event.GetDC()->GetHDC(), mode);
 171 */
 172 }
 173
 174 WXDWORD wxControl::GetExStyle(WXDWORD& style) const
 175 {
 176     bool want3D;
 177     WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
 178
 179     // Even with extended styles, need to combine with FS_BORDER
 180     // for them to look right.  Check it out later, base window style does
 181     // not designate BORDERS.  Down in Frame and And controls.
 182
 183     if ( want3D || wxStyleHasBorder(m_windowStyle) )
 184         style |= FS_BORDER;
 185
 186     return exStyle;
 187 }
 188
 189 // ---------------------------------------------------------------------------
 190 // global functions
 191 // ---------------------------------------------------------------------------
 192
 193 // Call this repeatedly for several wnds to find the overall size
 194 // of the widget.
 195 // Call it initially with -1 for all values in rect.
 196 // Keep calling for other widgets, and rect will be modified
 197 // to calculate largest bounding rectangle.
 198 void wxFindMaxSize(WXHWND wnd, RECT *rect)
 199 {
 200     int left = rect->xLeft;
 201     int right = rect->xRight;
 202     int top = rect->yTop;
 203     int bottom = rect->yBottom;
 204
 205     ::WinQueryWindowRect((HWND) wnd, rect);
 206
 207     if (left < 0)
 208         return;
 209
 210     if (left < rect->xLeft)
 211         rect->xLeft = left;
 212
 213     if (right > rect->xRight)
 214         rect->xRight = right;
 215
 216     if (top < rect->yTop)
 217         rect->yTop = top;
 218
 219     if (bottom > rect->yBottom)
 220         rect->yBottom = bottom;
 221 }
 222