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