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
   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(__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 {
  83     WXDWORD exstyle;
  84     WXDWORD msStyle = MSWGetStyle(GetWindowStyle(), &exstyle);
  85
  86     return MSWCreateControl(classname, msStyle, pos, size, label, exstyle);
  87 }
  88
  89 bool wxControl::MSWCreateControl(const wxChar *classname,
  90                                  WXDWORD style,
  91                                  const wxPoint& pos,
  92                                  const wxSize& size,
  93                                  const wxString& label,
  94                                  WXDWORD exstyle)
  95 {
  96     // if no extended style given, determine it ourselves
  97     if ( exstyle == (WXDWORD)-1 )
  98     {
  99         exstyle = 0;
 100         (void) MSWGetStyle(GetWindowStyle(), &exstyle);
 101     }
 102
 103     // all controls should have this style
 104     style |= WS_CHILD;
 105
 106     // create the control visible if it's currently shown for wxWindows
 107     if ( m_isShown )
 108     {
 109         style |= WS_VISIBLE;
 110     }
 111
 112     int x = pos.x == -1 ? 0 : pos.x,
 113         y = pos.y == -1 ? 0 : pos.y,
 114         w = size.x == -1 ? 0 : size.x,
 115         h = size.y == -1 ? 0 : size.y;
 116
 117     m_hWnd = (WXHWND)::CreateWindowEx
 118                        (
 119                         exstyle,            // extended style
 120                         classname,          // the kind of control to create
 121                         label,              // the window name
 122                         style,              // the window style
 123                         x, y, w, h,         // the window position and size
 124                         GetHwndOf(GetParent()),  // parent
 125                         (HMENU)GetId(),     // child id
 126                         wxGetInstance(),    // app instance
 127                         NULL                // creation parameters
 128                        );
 129
 130     if ( !m_hWnd )
 131     {
 132         wxLogDebug(wxT("Failed to create a control of class '%s'"), classname);
 133         wxFAIL_MSG(_T("something is very wrong"));
 134
 135         return FALSE;
 136     }
 137
 138 #if wxUSE_CTL3D
 139     if ( want3D )
 140     {
 141         Ctl3dSubclassCtl(GetHwnd());
 142         m_useCtl3D = TRUE;
 143     }
 144 #endif // wxUSE_CTL3D
 145
 146     // install wxWindows window proc for this window
 147     SubclassWin(m_hWnd);
 148
 149     // controls use the same font and colours as their parent dialog by default
 150     InheritAttributes();
 151
 152     // set the size now if no initial size specified
 153     if ( w <= 0 || h <= 0 )
 154     {
 155         SetBestSize(size);
 156     }
 157
 158     return TRUE;
 159 }
 160
 161 wxBorder wxControl::GetDefaultBorder() const
 162 {
 163     // we want to automatically give controls a sunken style (confusingly,
 164     // it may not really mean sunken at all as we map it to WS_EX_CLIENTEDGE
 165     // which is not sunken at all under Windows XP -- rather, just the default)
 166     return wxBORDER_SUNKEN;
 167 }
 168
 169 wxSize wxControl::DoGetBestSize() const
 170 {
 171     return wxSize(DEFAULT_ITEM_WIDTH, DEFAULT_ITEM_HEIGHT);
 172 }
 173
 174 bool wxControl::ProcessCommand(wxCommandEvent& event)
 175 {
 176 #if WXWIN_COMPATIBILITY
 177     if ( m_callback )
 178     {
 179         (void)(*m_callback)(*this, event);
 180
 181         return TRUE;
 182     }
 183     else
 184 #endif // WXWIN_COMPATIBILITY
 185
 186     return GetEventHandler()->ProcessEvent(event);
 187 }
 188
 189 #ifdef __WIN95__
 190 bool wxControl::MSWOnNotify(int idCtrl,
 191                             WXLPARAM lParam,
 192                             WXLPARAM* result)
 193 {
 194     wxEventType eventType = wxEVT_NULL;
 195
 196     NMHDR *hdr = (NMHDR*) lParam;
 197     switch ( hdr->code )
 198     {
 199         case NM_CLICK:
 200             eventType = wxEVT_COMMAND_LEFT_CLICK;
 201             break;
 202
 203         case NM_DBLCLK:
 204             eventType = wxEVT_COMMAND_LEFT_DCLICK;
 205             break;
 206
 207         case NM_RCLICK:
 208             eventType = wxEVT_COMMAND_RIGHT_CLICK;
 209             break;
 210
 211         case NM_RDBLCLK:
 212             eventType = wxEVT_COMMAND_RIGHT_DCLICK;
 213             break;
 214
 215         case NM_SETFOCUS:
 216             eventType = wxEVT_COMMAND_SET_FOCUS;
 217             break;
 218
 219         case NM_KILLFOCUS:
 220             eventType = wxEVT_COMMAND_KILL_FOCUS;
 221             break;
 222
 223         case NM_RETURN:
 224             eventType = wxEVT_COMMAND_ENTER;
 225             break;
 226
 227         default:
 228             return wxWindow::MSWOnNotify(idCtrl, lParam, result);
 229     }
 230
 231     wxCommandEvent event(wxEVT_NULL, m_windowId);
 232     event.SetEventType(eventType);
 233     event.SetEventObject(this);
 234
 235     return GetEventHandler()->ProcessEvent(event);
 236 }
 237 #endif // Win95
 238
 239 void wxControl::OnEraseBackground(wxEraseEvent& event)
 240 {
 241     // notice that this 'dumb' implementation may cause flicker for some of the
 242     // controls in which case they should intercept wxEraseEvent and process it
 243     // themselves somehow
 244
 245     RECT rect;
 246     ::GetClientRect(GetHwnd(), &rect);
 247
 248     HBRUSH hBrush = ::CreateSolidBrush(wxColourToRGB(GetBackgroundColour()));
 249
 250     HDC hdc = GetHdcOf((*event.GetDC()));
 251
 252 #ifndef __WXWINCE__
 253     int mode = ::SetMapMode(hdc, MM_TEXT);
 254 #endif
 255
 256     ::FillRect(hdc, &rect, hBrush);
 257     ::DeleteObject(hBrush);
 258
 259 #ifndef __WXWINCE__
 260     ::SetMapMode(hdc, mode);
 261 #endif
 262 }
 263
 264 WXHBRUSH wxControl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
 265 #if wxUSE_CTL3D
 266                                WXUINT message,
 267                                WXWPARAM wParam,
 268                                WXLPARAM lParam
 269 #else
 270                                WXUINT WXUNUSED(message),
 271                                WXWPARAM WXUNUSED(wParam),
 272                                WXLPARAM WXUNUSED(lParam)
 273 #endif
 274     )
 275 {
 276 #if wxUSE_CTL3D
 277     if ( m_useCtl3D )
 278     {
 279         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 280         return (WXHBRUSH) hbrush;
 281     }
 282 #endif // wxUSE_CTL3D
 283
 284     HDC hdc = (HDC)pDC;
 285     wxColour colBack = GetBackgroundColour();
 286
 287     ::SetBkColor(hdc, wxColourToRGB(colBack));
 288     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
 289
 290     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
 291
 292     return (WXHBRUSH)brush->GetResourceHandle();
 293 }
 294
 295 WXDWORD wxControl::MSWGetStyle(long style, WXDWORD *exstyle) const
 296 {
 297     long msStyle = wxWindow::MSWGetStyle(style, exstyle);
 298
 299     if ( AcceptsFocus() )
 300     {
 301         msStyle |= WS_TABSTOP;
 302     }
 303
 304     return msStyle;
 305 }
 306
 307 // ---------------------------------------------------------------------------
 308 // global functions
 309 // ---------------------------------------------------------------------------
 310
 311 // Call this repeatedly for several wnds to find the overall size
 312 // of the widget.
 313 // Call it initially with -1 for all values in rect.
 314 // Keep calling for other widgets, and rect will be modified
 315 // to calculate largest bounding rectangle.
 316 void wxFindMaxSize(WXHWND wnd, RECT *rect)
 317 {
 318     int left = rect->left;
 319     int right = rect->right;
 320     int top = rect->top;
 321     int bottom = rect->bottom;
 322
 323     GetWindowRect((HWND) wnd, rect);
 324
 325     if (left < 0)
 326         return;
 327
 328     if (left < rect->left)
 329         rect->left = left;
 330
 331     if (right > rect->right)
 332         rect->right = right;
 333
 334     if (top < rect->top)
 335         rect->top = top;
 336
 337     if (bottom > rect->bottom)
 338         rect->bottom = bottom;
 339 }
 340
 341 #endif // wxUSE_CONTROLS