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 {
  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     // want3D tells us whether or not the style specified a 3D border.
  97     // If so, under WIN16 we can use Ctl3D to give it an appropriate style.
  98     // Sometimes want3D is used to indicate that the non-extended style should have
  99     // WS_BORDER.
 100     bool want3D = TRUE;
 101
 102     // if no extended style given, determine it ourselves
 103     if ( exstyle == (WXDWORD)-1 )
 104     {
 105         exstyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
 106     }
 107
 108     // all controls should have this style
 109     style |= WS_CHILD;
 110
 111     // create the control visible if it's currently shown for wxWindows
 112     if ( m_isShown )
 113     {
 114         style |= WS_VISIBLE;
 115     }
 116
 117     int x = pos.x == -1 ? 0 : pos.x,
 118         y = pos.y == -1 ? 0 : pos.y,
 119         w = size.x == -1 ? 0 : size.x,
 120         h = size.y == -1 ? 0 : size.y;
 121
 122     m_hWnd = (WXHWND)::CreateWindowEx
 123                        (
 124                         exstyle,            // extended style
 125                         classname,          // the kind of control to create
 126                         label,              // the window name
 127                         style,              // the window style
 128                         x, y, w, h,         // the window position and size
 129                         GetHwndOf(GetParent()),  // parent
 130                         (HMENU)GetId(),     // child id
 131                         wxGetInstance(),    // app instance
 132                         NULL                // creation parameters
 133                        );
 134
 135     if ( !m_hWnd )
 136     {
 137         wxLogDebug(wxT("Failed to create a control of class '%s'"), classname);
 138         wxFAIL_MSG(_T("something is very wrong"));
 139
 140         return FALSE;
 141     }
 142
 143 #if wxUSE_CTL3D
 144     if ( want3D )
 145     {
 146         Ctl3dSubclassCtl(GetHwnd());
 147         m_useCtl3D = TRUE;
 148     }
 149 #endif // wxUSE_CTL3D
 150
 151     // install wxWindows window proc for this window
 152     SubclassWin(m_hWnd);
 153
 154     // controls use the same font and colours as their parent dialog by default
 155     InheritAttributes();
 156
 157     // set the size now if no initial size specified
 158     if ( w <= 0 || h <= 0 )
 159     {
 160         SetBestSize(size);
 161     }
 162
 163     return TRUE;
 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 #if WXWIN_COMPATIBILITY
 174     if ( m_callback )
 175     {
 176         (void)(*m_callback)(*this, event);
 177
 178         return TRUE;
 179     }
 180     else
 181 #endif // WXWIN_COMPATIBILITY
 182
 183     return GetEventHandler()->ProcessEvent(event);
 184 }
 185
 186 #ifdef __WIN95__
 187 bool wxControl::MSWOnNotify(int idCtrl,
 188                             WXLPARAM lParam,
 189                             WXLPARAM* result)
 190 {
 191     wxEventType eventType = wxEVT_NULL;
 192
 193     NMHDR *hdr = (NMHDR*) lParam;
 194     switch ( hdr->code )
 195     {
 196         case NM_CLICK:
 197             eventType = wxEVT_COMMAND_LEFT_CLICK;
 198             break;
 199
 200         case NM_DBLCLK:
 201             eventType = wxEVT_COMMAND_LEFT_DCLICK;
 202             break;
 203
 204         case NM_RCLICK:
 205             eventType = wxEVT_COMMAND_RIGHT_CLICK;
 206             break;
 207
 208         case NM_RDBLCLK:
 209             eventType = wxEVT_COMMAND_RIGHT_DCLICK;
 210             break;
 211
 212         case NM_SETFOCUS:
 213             eventType = wxEVT_COMMAND_SET_FOCUS;
 214             break;
 215
 216         case NM_KILLFOCUS:
 217             eventType = wxEVT_COMMAND_KILL_FOCUS;
 218             break;
 219
 220         case NM_RETURN:
 221             eventType = wxEVT_COMMAND_ENTER;
 222             break;
 223
 224         default:
 225             return wxWindow::MSWOnNotify(idCtrl, lParam, result);
 226     }
 227
 228     wxCommandEvent event(wxEVT_NULL, m_windowId);
 229     event.SetEventType(eventType);
 230     event.SetEventObject(this);
 231
 232     return GetEventHandler()->ProcessEvent(event);
 233 }
 234 #endif // Win95
 235
 236 void wxControl::OnEraseBackground(wxEraseEvent& event)
 237 {
 238     // notice that this 'dumb' implementation may cause flicker for some of the
 239     // controls in which case they should intercept wxEraseEvent and process it
 240     // themselves somehow
 241
 242     RECT rect;
 243     ::GetClientRect(GetHwnd(), &rect);
 244
 245     HBRUSH hBrush = ::CreateSolidBrush(wxColourToRGB(GetBackgroundColour()));
 246
 247     HDC hdc = GetHdcOf((*event.GetDC()));
 248     int mode = ::SetMapMode(hdc, MM_TEXT);
 249
 250     ::FillRect(hdc, &rect, hBrush);
 251     ::DeleteObject(hBrush);
 252     ::SetMapMode(hdc, mode);
 253 }
 254
 255 WXHBRUSH wxControl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
 256 #if wxUSE_CTL3D
 257                                WXUINT message,
 258                                WXWPARAM wParam,
 259                                WXLPARAM lParam
 260 #else
 261                                WXUINT WXUNUSED(message),
 262                                WXWPARAM WXUNUSED(wParam),
 263                                WXLPARAM WXUNUSED(lParam)
 264 #endif
 265     )
 266 {
 267 #if wxUSE_CTL3D
 268     if ( m_useCtl3D )
 269     {
 270         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 271         return (WXHBRUSH) hbrush;
 272     }
 273 #endif // wxUSE_CTL3D
 274
 275     HDC hdc = (HDC)pDC;
 276     if (GetParent()->GetTransparentBackground())
 277         SetBkMode(hdc, TRANSPARENT);
 278     else
 279         SetBkMode(hdc, OPAQUE);
 280
 281     wxColour colBack = GetBackgroundColour();
 282
 283     ::SetBkColor(hdc, wxColourToRGB(colBack));
 284     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
 285
 286     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
 287
 288     return (WXHBRUSH)brush->GetResourceHandle();
 289 }
 290
 291 WXDWORD wxControl::MSWGetStyle(long style, WXDWORD *exstyle) const
 292 {
 293     long msStyle = wxWindow::MSWGetStyle(style, exstyle);
 294
 295     if ( AcceptsFocus() )
 296     {
 297         msStyle |= WS_TABSTOP;
 298     }
 299
 300     return msStyle;
 301 }
 302
 303 // ---------------------------------------------------------------------------
 304 // global functions
 305 // ---------------------------------------------------------------------------
 306
 307 // Call this repeatedly for several wnds to find the overall size
 308 // of the widget.
 309 // Call it initially with -1 for all values in rect.
 310 // Keep calling for other widgets, and rect will be modified
 311 // to calculate largest bounding rectangle.
 312 void wxFindMaxSize(WXHWND wnd, RECT *rect)
 313 {
 314     int left = rect->left;
 315     int right = rect->right;
 316     int top = rect->top;
 317     int bottom = rect->bottom;
 318
 319     GetWindowRect((HWND) wnd, rect);
 320
 321     if (left < 0)
 322         return;
 323
 324     if (left < rect->left)
 325         rect->left = left;
 326
 327     if (right > rect->right)
 328         rect->right = right;
 329
 330     if (top < rect->top)
 331         rect->top = top;
 332
 333     if (bottom > rect->bottom)
 334         rect->bottom = bottom;
 335 }
 336
 337 #endif // wxUSE_CONTROLS