src/msw/control.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/control.cpp
   3 // Purpose:     wxControl class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   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 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #if wxUSE_CONTROLS
  24
  25 #ifndef WX_PRECOMP
  26     #include "wx/event.h"
  27     #include "wx/app.h"
  28     #include "wx/dcclient.h"
  29     #include "wx/log.h"
  30 #endif
  31
  32 #include "wx/control.h"
  33
  34 #include "wx/msw/private.h"
  35
  36 #if defined(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__TWIN32__)) && !defined(__CYGWIN10__))
  37     #include <commctrl.h>
  38 #endif
  39
  40 IMPLEMENT_ABSTRACT_CLASS(wxControl, wxWindow)
  41
  42 BEGIN_EVENT_TABLE(wxControl, wxWindow)
  43     EVT_ERASE_BACKGROUND(wxControl::OnEraseBackground)
  44 END_EVENT_TABLE()
  45
  46 // Item members
  47 wxControl::wxControl()
  48 {
  49 #if WXWIN_COMPATIBILITY
  50     m_callback = 0;
  51 #endif // WXWIN_COMPATIBILITY
  52 }
  53
  54 wxControl::~wxControl()
  55 {
  56     m_isBeingDeleted = TRUE;
  57 }
  58
  59
  60 bool wxControl::Create(wxWindow *parent,
  61                        wxWindowID id,
  62                        const wxPoint& pos,
  63                        const wxSize& size,
  64                        long style,
  65                        const wxValidator& validator,
  66                        const wxString& name)
  67 {
  68     if ( !wxWindow::Create(parent, id, pos, size, style, name) )
  69         return FALSE;
  70
  71 #if wxUSE_VALIDATORS
  72     SetValidator(validator);
  73 #endif
  74
  75     return TRUE;
  76 }
  77
  78 bool wxControl::MSWCreateControl(const wxChar *classname,
  79                                  const wxString& label,
  80                                  const wxPoint& pos,
  81                                  const wxSize& size,
  82                                  long style)
  83 {
  84     WXDWORD exstyle;
  85     WXDWORD msStyle = MSWGetStyle(style, &exstyle);
  86
  87     return MSWCreateControl(classname, msStyle, pos, size, label, exstyle);
  88 }
  89
  90 bool wxControl::MSWCreateControl(const wxChar *classname,
  91                                  WXDWORD style,
  92                                  const wxPoint& pos,
  93                                  const wxSize& size,
  94                                  const wxString& label,
  95                                  WXDWORD exstyle)
  96 {
  97     // want3D tells us whether or not the style specified a 3D border.
  98     // If so, under WIN16 we can use Ctl3D to give it an appropriate style.
  99     // Sometimes want3D is used to indicate that the non-extended style should have
 100     // WS_BORDER.
 101     bool want3D = TRUE;
 102
 103     // if no extended style given, determine it ourselves
 104     if ( exstyle == (WXDWORD)-1 )
 105     {
 106         exstyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
 107     }
 108
 109     // all controls should have this style
 110     style |= WS_CHILD;
 111
 112     // create the control visible if it's currently shown for wxWindows
 113     if ( m_isShown )
 114     {
 115         style |= WS_VISIBLE;
 116     }
 117
 118     int x = pos.x == -1 ? 0 : pos.x,
 119         y = pos.y == -1 ? 0 : pos.y,
 120         w = size.x == -1 ? 0 : size.x,
 121         h = size.y == -1 ? 0 : size.y;
 122
 123     m_hWnd = (WXHWND)::CreateWindowEx
 124                        (
 125                         exstyle,            // extended style
 126                         classname,          // the kind of control to create
 127                         label,              // the window name
 128                         style,              // the window style
 129                         x, y, w, h,         // the window position and size
 130                         GetHwndOf(GetParent()),  // parent
 131                         (HMENU)GetId(),     // child id
 132                         wxGetInstance(),    // app instance
 133                         NULL                // creation parameters
 134                        );
 135
 136     if ( !m_hWnd )
 137     {
 138         wxLogDebug(wxT("Failed to create a control of class '%s'"), classname);
 139         wxFAIL_MSG(_T("something is very wrong"));
 140
 141         return FALSE;
 142     }
 143
 144 #if wxUSE_CTL3D
 145     if ( want3D )
 146     {
 147         Ctl3dSubclassCtl(GetHwnd());
 148         m_useCtl3D = TRUE;
 149     }
 150 #endif // wxUSE_CTL3D
 151
 152     // install wxWindows window proc for this window
 153     SubclassWin(m_hWnd);
 154
 155     // controls use the same font and colours as their parent dialog by default
 156     InheritAttributes();
 157
 158     // set the size now if no initial size specified
 159     if ( w <= 0 || h <= 0 )
 160     {
 161         SetBestSize(size);
 162     }
 163
 164     return TRUE;
 165 }
 166
 167 wxSize wxControl::DoGetBestSize() const
 168 {
 169     return wxSize(DEFAULT_ITEM_WIDTH, DEFAULT_ITEM_HEIGHT);
 170 }
 171
 172 bool wxControl::ProcessCommand(wxCommandEvent& event)
 173 {
 174 #if WXWIN_COMPATIBILITY
 175     if ( m_callback )
 176     {
 177         (void)(*m_callback)(*this, event);
 178
 179         return TRUE;
 180     }
 181     else
 182 #endif // WXWIN_COMPATIBILITY
 183
 184     return GetEventHandler()->ProcessEvent(event);
 185 }
 186
 187 #ifdef __WIN95__
 188 bool wxControl::MSWOnNotify(int idCtrl,
 189                             WXLPARAM lParam,
 190                             WXLPARAM* result)
 191 {
 192     wxEventType eventType = wxEVT_NULL;
 193
 194     NMHDR *hdr = (NMHDR*) lParam;
 195     switch ( hdr->code )
 196     {
 197         case NM_CLICK:
 198             eventType = wxEVT_COMMAND_LEFT_CLICK;
 199             break;
 200
 201         case NM_DBLCLK:
 202             eventType = wxEVT_COMMAND_LEFT_DCLICK;
 203             break;
 204
 205         case NM_RCLICK:
 206             eventType = wxEVT_COMMAND_RIGHT_CLICK;
 207             break;
 208
 209         case NM_RDBLCLK:
 210             eventType = wxEVT_COMMAND_RIGHT_DCLICK;
 211             break;
 212
 213         case NM_SETFOCUS:
 214             eventType = wxEVT_COMMAND_SET_FOCUS;
 215             break;
 216
 217         case NM_KILLFOCUS:
 218             eventType = wxEVT_COMMAND_KILL_FOCUS;
 219             break;
 220
 221         case NM_RETURN:
 222             eventType = wxEVT_COMMAND_ENTER;
 223             break;
 224
 225         default:
 226             return wxWindow::MSWOnNotify(idCtrl, lParam, result);
 227     }
 228
 229     wxCommandEvent event(wxEVT_NULL, m_windowId);
 230     event.SetEventType(eventType);
 231     event.SetEventObject(this);
 232
 233     return GetEventHandler()->ProcessEvent(event);
 234 }
 235 #endif // Win95
 236
 237 void wxControl::OnEraseBackground(wxEraseEvent& event)
 238 {
 239     // notice that this 'dumb' implementation may cause flicker for some of the
 240     // controls in which case they should intercept wxEraseEvent and process it
 241     // themselves somehow
 242
 243     RECT rect;
 244     ::GetClientRect(GetHwnd(), &rect);
 245
 246     HBRUSH hBrush = ::CreateSolidBrush(wxColourToRGB(GetBackgroundColour()));
 247
 248     HDC hdc = GetHdcOf((*event.GetDC()));
 249     int mode = ::SetMapMode(hdc, MM_TEXT);
 250
 251     ::FillRect(hdc, &rect, hBrush);
 252     ::DeleteObject(hBrush);
 253     ::SetMapMode(hdc, mode);
 254 }
 255
 256 WXHBRUSH wxControl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
 257 #if wxUSE_CTL3D
 258                                WXUINT message,
 259                                WXWPARAM wParam,
 260                                WXLPARAM lParam
 261 #else
 262                                WXUINT WXUNUSED(message),
 263                                WXWPARAM WXUNUSED(wParam),
 264                                WXLPARAM WXUNUSED(lParam)
 265 #endif
 266     )
 267 {
 268 #if wxUSE_CTL3D
 269     if ( m_useCtl3D )
 270     {
 271         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 272         return (WXHBRUSH) hbrush;
 273     }
 274 #endif // wxUSE_CTL3D
 275
 276     HDC hdc = (HDC)pDC;
 277     if (GetParent()->GetTransparentBackground())
 278         SetBkMode(hdc, TRANSPARENT);
 279     else
 280         SetBkMode(hdc, OPAQUE);
 281
 282     wxColour colBack = GetBackgroundColour();
 283
 284     ::SetBkColor(hdc, wxColourToRGB(colBack));
 285     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
 286
 287     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
 288
 289     return (WXHBRUSH)brush->GetResourceHandle();
 290 }
 291
 292 WXDWORD wxControl::MSWGetStyle(long style, WXDWORD *exstyle) const
 293 {
 294     long msStyle = wxWindow::MSWGetStyle(style, exstyle);
 295
 296     if ( AcceptsFocus() )
 297     {
 298         msStyle |= WS_TABSTOP;
 299     }
 300
 301     return msStyle;
 302 }
 303
 304 // ---------------------------------------------------------------------------
 305 // global functions
 306 // ---------------------------------------------------------------------------
 307
 308 // Call this repeatedly for several wnds to find the overall size
 309 // of the widget.
 310 // Call it initially with -1 for all values in rect.
 311 // Keep calling for other widgets, and rect will be modified
 312 // to calculate largest bounding rectangle.
 313 void wxFindMaxSize(WXHWND wnd, RECT *rect)
 314 {
 315     int left = rect->left;
 316     int right = rect->right;
 317     int top = rect->top;
 318     int bottom = rect->bottom;
 319
 320     GetWindowRect((HWND) wnd, rect);
 321
 322     if (left < 0)
 323         return;
 324
 325     if (left < rect->left)
 326         rect->left = left;
 327
 328     if (right > rect->right)
 329         rect->right = right;
 330
 331     if (top < rect->top)
 332         rect->top = top;
 333
 334     if (bottom > rect->bottom)
 335         rect->bottom = bottom;
 336 }
 337
 338 #endif // wxUSE_CONTROLS