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