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 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "control.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_CONTROLS
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/event.h"
  35     #include "wx/app.h"
  36     #include "wx/dcclient.h"
  37     #include "wx/log.h"
  38     #include "wx/settings.h"
  39 #endif
  40
  41 #include "wx/control.h"
  42
  43 #include "wx/msw/private.h"
  44
  45 #if defined(__WIN95__) && !(defined(__GNUWIN32_OLD__) && !defined(__CYGWIN10__))
  46     #include <commctrl.h>
  47 #endif
  48
  49 // ----------------------------------------------------------------------------
  50 // wxWin macros
  51 // ----------------------------------------------------------------------------
  52
  53 IMPLEMENT_ABSTRACT_CLASS(wxControl, wxWindow)
  54
  55 BEGIN_EVENT_TABLE(wxControl, wxWindow)
  56     EVT_ERASE_BACKGROUND(wxControl::OnEraseBackground)
  57 END_EVENT_TABLE()
  58
  59 // ============================================================================
  60 // wxControl implementation
  61 // ============================================================================
  62
  63 // ----------------------------------------------------------------------------
  64 // wxControl ctor/dtor
  65 // ----------------------------------------------------------------------------
  66
  67 wxControl::~wxControl()
  68 {
  69     m_isBeingDeleted = TRUE;
  70 }
  71
  72 // ----------------------------------------------------------------------------
  73 // control window creation
  74 // ----------------------------------------------------------------------------
  75
  76 bool wxControl::Create(wxWindow *parent,
  77                        wxWindowID id,
  78                        const wxPoint& pos,
  79                        const wxSize& size,
  80                        long style,
  81                        const wxValidator& wxVALIDATOR_PARAM(validator),
  82                        const wxString& name)
  83 {
  84     if ( !wxWindow::Create(parent, id, pos, size, style, name) )
  85         return FALSE;
  86
  87 #if wxUSE_VALIDATORS
  88     SetValidator(validator);
  89 #endif
  90
  91     return TRUE;
  92 }
  93
  94 bool wxControl::MSWCreateControl(const wxChar *classname,
  95                                  const wxString& label,
  96                                  const wxPoint& pos,
  97                                  const wxSize& size)
  98 {
  99     WXDWORD exstyle;
 100     WXDWORD msStyle = MSWGetStyle(GetWindowStyle(), &exstyle);
 101
 102     return MSWCreateControl(classname, msStyle, pos, size, label, exstyle);
 103 }
 104
 105 bool wxControl::MSWCreateControl(const wxChar *classname,
 106                                  WXDWORD style,
 107                                  const wxPoint& pos,
 108                                  const wxSize& size,
 109                                  const wxString& label,
 110                                  WXDWORD exstyle)
 111 {
 112     // if no extended style given, determine it ourselves
 113     if ( exstyle == (WXDWORD)-1 )
 114     {
 115         exstyle = 0;
 116         (void) MSWGetStyle(GetWindowStyle(), &exstyle);
 117     }
 118
 119     // all controls should have this style
 120     style |= WS_CHILD;
 121
 122     // create the control visible if it's currently shown for wxWindows
 123     if ( m_isShown )
 124     {
 125         style |= WS_VISIBLE;
 126     }
 127
 128     // choose the position for the control
 129     int x = pos.x == -1 ? 0 : pos.x,
 130         y = pos.y == -1 ? 0 : pos.y,
 131         w = size.x == -1 ? 0 : size.x,
 132         h = size.y == -1 ? 0 : size.y;
 133
 134     // ... and adjust it to account for ap ossible parent frames toolbar
 135     AdjustForParentClientOrigin(x, y);
 136
 137     m_hWnd = (WXHWND)::CreateWindowEx
 138                        (
 139                         exstyle,            // extended style
 140                         classname,          // the kind of control to create
 141                         label,              // the window name
 142                         style,              // the window style
 143                         x, y, w, h,         // the window position and size
 144                         GetHwndOf(GetParent()),  // parent
 145                         (HMENU)GetId(),     // child id
 146                         wxGetInstance(),    // app instance
 147                         NULL                // creation parameters
 148                        );
 149
 150     if ( !m_hWnd )
 151     {
 152         wxLogDebug(wxT("Failed to create a control of class '%s'"), classname);
 153         wxFAIL_MSG(_T("something is very wrong"));
 154
 155         return FALSE;
 156     }
 157
 158 #if wxUSE_CTL3D
 159     if ( want3D )
 160     {
 161         Ctl3dSubclassCtl(GetHwnd());
 162         m_useCtl3D = TRUE;
 163     }
 164 #endif // wxUSE_CTL3D
 165
 166     // install wxWindows window proc for this window
 167     SubclassWin(m_hWnd);
 168
 169     // set up fonts and colours
 170     InheritAttributes();
 171     SetFont(GetDefaultAttributes().font);
 172
 173     // set the size now if no initial size specified
 174     if ( w <= 0 || h <= 0 )
 175     {
 176         SetBestSize(size);
 177     }
 178
 179     return TRUE;
 180 }
 181
 182 // ----------------------------------------------------------------------------
 183 // various accessors
 184 // ----------------------------------------------------------------------------
 185
 186 wxBorder wxControl::GetDefaultBorder() const
 187 {
 188     // we want to automatically give controls a sunken style (confusingly,
 189     // it may not really mean sunken at all as we map it to WS_EX_CLIENTEDGE
 190     // which is not sunken at all under Windows XP -- rather, just the default)
 191     return wxBORDER_SUNKEN;
 192 }
 193
 194 WXDWORD wxControl::MSWGetStyle(long style, WXDWORD *exstyle) const
 195 {
 196     long msStyle = wxWindow::MSWGetStyle(style, exstyle);
 197
 198     if ( AcceptsFocus() )
 199     {
 200         msStyle |= WS_TABSTOP;
 201     }
 202
 203     return msStyle;
 204 }
 205
 206 wxSize wxControl::DoGetBestSize() const
 207 {
 208     return wxSize(DEFAULT_ITEM_WIDTH, DEFAULT_ITEM_HEIGHT);
 209 }
 210
 211 /* static */ wxVisualAttributes
 212 wxControl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 213 {
 214     wxVisualAttributes attrs;
 215
 216     // old school (i.e. not "common") controls use the standard dialog font
 217     // by default
 218     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 219
 220     // most, or at least many, of the controls use the same colours as the
 221     // buttons -- others will have to override this (and possibly simply call
 222     // GetCompositeControlsDefaultAttributes() from their versions)
 223     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNTEXT);
 224     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 225
 226     return attrs;
 227 }
 228
 229 // another version for the "composite", i.e. non simple controls
 230 /* static */ wxVisualAttributes
 231 wxControl::GetCompositeControlsDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 232 {
 233     wxVisualAttributes attrs;
 234     attrs.font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT);
 235     attrs.colFg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 236     attrs.colBg = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 237
 238     return attrs;
 239 }
 240
 241 // ----------------------------------------------------------------------------
 242 // message handling
 243 // ----------------------------------------------------------------------------
 244
 245 bool wxControl::ProcessCommand(wxCommandEvent& event)
 246 {
 247     return GetEventHandler()->ProcessEvent(event);
 248 }
 249
 250 #ifdef __WIN95__
 251 bool wxControl::MSWOnNotify(int idCtrl,
 252                             WXLPARAM lParam,
 253                             WXLPARAM* result)
 254 {
 255     wxEventType eventType = wxEVT_NULL;
 256
 257     NMHDR *hdr = (NMHDR*) lParam;
 258     switch ( hdr->code )
 259     {
 260         case NM_CLICK:
 261             eventType = wxEVT_COMMAND_LEFT_CLICK;
 262             break;
 263
 264         case NM_DBLCLK:
 265             eventType = wxEVT_COMMAND_LEFT_DCLICK;
 266             break;
 267
 268         case NM_RCLICK:
 269             eventType = wxEVT_COMMAND_RIGHT_CLICK;
 270             break;
 271
 272         case NM_RDBLCLK:
 273             eventType = wxEVT_COMMAND_RIGHT_DCLICK;
 274             break;
 275
 276         case NM_SETFOCUS:
 277             eventType = wxEVT_COMMAND_SET_FOCUS;
 278             break;
 279
 280         case NM_KILLFOCUS:
 281             eventType = wxEVT_COMMAND_KILL_FOCUS;
 282             break;
 283
 284         case NM_RETURN:
 285             eventType = wxEVT_COMMAND_ENTER;
 286             break;
 287
 288         default:
 289             return wxWindow::MSWOnNotify(idCtrl, lParam, result);
 290     }
 291
 292     wxCommandEvent event(wxEVT_NULL, m_windowId);
 293     event.SetEventType(eventType);
 294     event.SetEventObject(this);
 295
 296     return GetEventHandler()->ProcessEvent(event);
 297 }
 298 #endif // Win95
 299
 300 void wxControl::OnEraseBackground(wxEraseEvent& event)
 301 {
 302     // notice that this 'dumb' implementation may cause flicker for some of the
 303     // controls in which case they should intercept wxEraseEvent and process it
 304     // themselves somehow
 305
 306     RECT rect;
 307     ::GetClientRect(GetHwnd(), &rect);
 308
 309     HBRUSH hBrush = ::CreateSolidBrush(wxColourToRGB(GetBackgroundColour()));
 310
 311     HDC hdc = GetHdcOf((*event.GetDC()));
 312
 313 #ifndef __WXWINCE__
 314     int mode = ::SetMapMode(hdc, MM_TEXT);
 315 #endif
 316
 317     ::FillRect(hdc, &rect, hBrush);
 318     ::DeleteObject(hBrush);
 319
 320 #ifndef __WXWINCE__
 321     ::SetMapMode(hdc, mode);
 322 #endif
 323 }
 324
 325 WXHBRUSH wxControl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
 326 #if wxUSE_CTL3D
 327                                WXUINT message,
 328                                WXWPARAM wParam,
 329                                WXLPARAM lParam
 330 #else
 331                                WXUINT WXUNUSED(message),
 332                                WXWPARAM WXUNUSED(wParam),
 333                                WXLPARAM WXUNUSED(lParam)
 334 #endif
 335     )
 336 {
 337 #if wxUSE_CTL3D
 338     if ( m_useCtl3D )
 339     {
 340         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
 341         return (WXHBRUSH) hbrush;
 342     }
 343 #endif // wxUSE_CTL3D
 344
 345     HDC hdc = (HDC)pDC;
 346     wxColour colBack = GetBackgroundColour();
 347
 348     ::SetBkColor(hdc, wxColourToRGB(colBack));
 349     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
 350
 351     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
 352
 353     return (WXHBRUSH)brush->GetResourceHandle();
 354 }
 355
 356 // ---------------------------------------------------------------------------
 357 // global functions
 358 // ---------------------------------------------------------------------------
 359
 360 // this is used in radiobox.cpp and slider95.cpp and should be removed as soon
 361 // as it is not needed there any more!
 362 //
 363 // Call this repeatedly for several wnds to find the overall size
 364 // of the widget.
 365 // Call it initially with -1 for all values in rect.
 366 // Keep calling for other widgets, and rect will be modified
 367 // to calculate largest bounding rectangle.
 368 void wxFindMaxSize(WXHWND wnd, RECT *rect)
 369 {
 370     int left = rect->left;
 371     int right = rect->right;
 372     int top = rect->top;
 373     int bottom = rect->bottom;
 374
 375     GetWindowRect((HWND) wnd, rect);
 376
 377     if (left < 0)
 378         return;
 379
 380     if (left < rect->left)
 381         rect->left = left;
 382
 383     if (right > rect->right)
 384         rect->right = right;
 385
 386     if (top < rect->top)
 387         rect->top = top;
 388
 389     if (bottom > rect->bottom)
 390         rect->bottom = bottom;
 391 }
 392
 393 #endif // wxUSE_CONTROLS