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