src/msw/spinctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/spinctrl.cpp
   3 // Purpose:     wxSpinCtrl class implementation for Win32
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     22.07.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999-2005 Vadim Zeitlin
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  17     #pragma implementation "spinctrlbase.h"
  18     #pragma implementation "spinctrl.h"
  19 #endif
  20
  21 // ----------------------------------------------------------------------------
  22 // headers
  23 // ----------------------------------------------------------------------------
  24
  25 // for compilers that support precompilation, includes "wx.h".
  26 #include "wx/wxprec.h"
  27
  28 #ifdef __BORLANDC__
  29     #pragma hdrstop
  30 #endif
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/wx.h"
  34 #endif
  35
  36 #if wxUSE_SPINCTRL
  37
  38 #include "wx/spinctrl.h"
  39 #include "wx/msw/private.h"
  40 #include "wx/msw/wrapcctl.h"
  41
  42 #if wxUSE_TOOLTIPS
  43     #include "wx/tooltip.h"
  44 #endif // wxUSE_TOOLTIPS
  45
  46 #include <limits.h>         // for INT_MIN
  47
  48 #define USE_DEFERRED_SIZING 1
  49 #define USE_DEFER_BUG_WORKAROUND 0
  50
  51 // ----------------------------------------------------------------------------
  52 // macros
  53 // ----------------------------------------------------------------------------
  54
  55 #if wxUSE_EXTENDED_RTTI
  56 WX_DEFINE_FLAGS( wxSpinCtrlStyle )
  57
  58 wxBEGIN_FLAGS( wxSpinCtrlStyle )
  59     // new style border flags, we put them first to
  60     // use them for streaming out
  61     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  62     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  63     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  64     wxFLAGS_MEMBER(wxBORDER_RAISED)
  65     wxFLAGS_MEMBER(wxBORDER_STATIC)
  66     wxFLAGS_MEMBER(wxBORDER_NONE)
  67
  68     // old style border flags
  69     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  70     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  71     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  72     wxFLAGS_MEMBER(wxRAISED_BORDER)
  73     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  74     wxFLAGS_MEMBER(wxBORDER)
  75
  76     // standard window styles
  77     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  78     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  79     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  80     wxFLAGS_MEMBER(wxWANTS_CHARS)
  81     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  82     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  83     wxFLAGS_MEMBER(wxVSCROLL)
  84     wxFLAGS_MEMBER(wxHSCROLL)
  85
  86     wxFLAGS_MEMBER(wxSP_HORIZONTAL)
  87     wxFLAGS_MEMBER(wxSP_VERTICAL)
  88     wxFLAGS_MEMBER(wxSP_ARROW_KEYS)
  89     wxFLAGS_MEMBER(wxSP_WRAP)
  90
  91 wxEND_FLAGS( wxSpinCtrlStyle )
  92
  93 IMPLEMENT_DYNAMIC_CLASS_XTI(wxSpinCtrl, wxControl,"wx/spinbut.h")
  94
  95 wxBEGIN_PROPERTIES_TABLE(wxSpinCtrl)
  96     wxEVENT_RANGE_PROPERTY( Spin , wxEVT_SCROLL_TOP , wxEVT_SCROLL_ENDSCROLL , wxSpinEvent )
  97     wxEVENT_PROPERTY( Updated , wxEVT_COMMAND_SPINCTRL_UPDATED , wxCommandEvent )
  98     wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
  99     wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
 100
 101     wxPROPERTY( ValueString , wxString , SetValue , GetValue , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) ;
 102     wxPROPERTY( Value , int , SetValue, GetValue, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 103     wxPROPERTY( Min , int , SetMin, GetMin, 0, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 104     wxPROPERTY( Max , int , SetMax, GetMax, 0 , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 105     wxPROPERTY_FLAGS( WindowStyle , wxSpinCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 106 /*
 107     TODO PROPERTIES
 108         style wxSP_ARROW_KEYS
 109 */
 110 wxEND_PROPERTIES_TABLE()
 111
 112 wxBEGIN_HANDLERS_TABLE(wxSpinCtrl)
 113 wxEND_HANDLERS_TABLE()
 114
 115 wxCONSTRUCTOR_6( wxSpinCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , ValueString , wxPoint , Position , wxSize , Size , long , WindowStyle )
 116 #else
 117 IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl, wxControl)
 118 #endif
 119
 120 BEGIN_EVENT_TABLE(wxSpinCtrl, wxSpinButton)
 121     EVT_CHAR(wxSpinCtrl::OnChar)
 122
 123     EVT_SET_FOCUS(wxSpinCtrl::OnSetFocus)
 124
 125     EVT_SPIN(wxID_ANY, wxSpinCtrl::OnSpinChange)
 126 END_EVENT_TABLE()
 127
 128 #define GetBuddyHwnd()      (HWND)(m_hwndBuddy)
 129
 130 // ----------------------------------------------------------------------------
 131 // constants
 132 // ----------------------------------------------------------------------------
 133
 134 // the margin between the up-down control and its buddy (can be arbitrary,
 135 // choose what you like - or may be decide during run-time depending on the
 136 // font size?)
 137 static const int MARGIN_BETWEEN = 1;
 138
 139 // ============================================================================
 140 // implementation
 141 // ============================================================================
 142
 143 wxArraySpins wxSpinCtrl::ms_allSpins;
 144
 145 // ----------------------------------------------------------------------------
 146 // wnd proc for the buddy text ctrl
 147 // ----------------------------------------------------------------------------
 148
 149 LRESULT APIENTRY _EXPORT wxBuddyTextWndProc(HWND hwnd,
 150                                             UINT message,
 151                                             WPARAM wParam,
 152                                             LPARAM lParam)
 153 {
 154     wxSpinCtrl *spin = (wxSpinCtrl *)wxGetWindowUserData(hwnd);
 155
 156     // forward some messages (the key and focus ones only so far) to
 157     // the spin ctrl
 158     switch ( message )
 159     {
 160         case WM_SETFOCUS:
 161             // if the focus comes from the spin control itself, don't set it
 162             // back to it -- we don't want to go into an infinite loop
 163             if ( (WXHWND)wParam == spin->GetHWND() )
 164                 break;
 165             //else: fall through
 166
 167         case WM_KILLFOCUS:
 168         case WM_CHAR:
 169         case WM_DEADCHAR:
 170         case WM_KEYUP:
 171         case WM_KEYDOWN:
 172             spin->MSWWindowProc(message, wParam, lParam);
 173
 174             // The control may have been deleted at this point, so check.
 175             if ( !::IsWindow(hwnd) || wxGetWindowUserData(hwnd) != spin )
 176                 return 0;
 177             break;
 178
 179         case WM_GETDLGCODE:
 180             // we want to get WXK_RETURN in order to generate the event for it
 181             return DLGC_WANTCHARS;
 182     }
 183
 184     return ::CallWindowProc(CASTWNDPROC spin->GetBuddyWndProc(),
 185                             hwnd, message, wParam, lParam);
 186 }
 187
 188 /* static */
 189 wxSpinCtrl *wxSpinCtrl::GetSpinForTextCtrl(WXHWND hwndBuddy)
 190 {
 191     wxSpinCtrl *spin = (wxSpinCtrl *)wxGetWindowUserData((HWND)hwndBuddy);
 192
 193     int i = ms_allSpins.Index(spin);
 194
 195     if ( i == wxNOT_FOUND )
 196         return NULL;
 197
 198     // sanity check
 199     wxASSERT_MSG( spin->m_hwndBuddy == hwndBuddy,
 200                   _T("wxSpinCtrl has incorrect buddy HWND!") );
 201
 202     return spin;
 203 }
 204
 205 // process a WM_COMMAND generated by the buddy text control
 206 bool wxSpinCtrl::ProcessTextCommand(WXWORD cmd, WXWORD WXUNUSED(id))
 207 {
 208     switch (cmd)
 209     {
 210     case EN_CHANGE:
 211         {
 212             wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
 213             event.SetEventObject(this);
 214             wxString val = wxGetWindowText(m_hwndBuddy);
 215             event.SetString(val);
 216             event.SetInt(GetValue());
 217             return GetEventHandler()->ProcessEvent(event);
 218         }
 219     case EN_SETFOCUS:
 220     case EN_KILLFOCUS:
 221         {
 222             wxFocusEvent event(cmd == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
 223                     : wxEVT_SET_FOCUS,
 224                     m_windowId);
 225             event.SetEventObject( this );
 226             return GetEventHandler()->ProcessEvent(event);
 227         }
 228      default:
 229         break;
 230     }
 231
 232     // not processed
 233     return false;
 234 }
 235
 236 void wxSpinCtrl::OnChar(wxKeyEvent& event)
 237 {
 238     switch ( event.GetKeyCode() )
 239     {
 240         case WXK_RETURN:
 241             {
 242                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 243                 InitCommandEvent(event);
 244                 wxString val = wxGetWindowText(m_hwndBuddy);
 245                 event.SetString(val);
 246                 event.SetInt(GetValue());
 247                 if ( GetEventHandler()->ProcessEvent(event) )
 248                     return;
 249                 break;
 250             }
 251
 252         case WXK_TAB:
 253             // always produce navigation event - even if we process TAB
 254             // ourselves the fact that we got here means that the user code
 255             // decided to skip processing of this TAB - probably to let it
 256             // do its default job.
 257             {
 258                 wxNavigationKeyEvent eventNav;
 259                 eventNav.SetDirection(!event.ShiftDown());
 260                 eventNav.SetWindowChange(event.ControlDown());
 261                 eventNav.SetEventObject(this);
 262
 263                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
 264                     return;
 265             }
 266             break;
 267     }
 268
 269     // no, we didn't process it
 270     event.Skip();
 271 }
 272
 273 void wxSpinCtrl::OnSetFocus(wxFocusEvent& event)
 274 {
 275     // when we get focus, give it to our buddy window as it needs it more than
 276     // we do
 277     ::SetFocus((HWND)m_hwndBuddy);
 278
 279     event.Skip();
 280 }
 281
 282 // ----------------------------------------------------------------------------
 283 // construction
 284 // ----------------------------------------------------------------------------
 285
 286 bool wxSpinCtrl::Create(wxWindow *parent,
 287                         wxWindowID id,
 288                         const wxString& value,
 289                         const wxPoint& pos,
 290                         const wxSize& size,
 291                         long style,
 292                         int min, int max, int initial,
 293                         const wxString& name)
 294 {
 295     // before using DoGetBestSize(), have to set style to let the base class
 296     // know whether this is a horizontal or vertical control (we're always
 297     // vertical)
 298     style |= wxSP_VERTICAL;
 299
 300     if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
 301 #ifdef __WXWINCE__
 302         style |= wxBORDER_SIMPLE;
 303 #else
 304         style |= wxBORDER_SUNKEN;
 305 #endif
 306
 307     SetWindowStyle(style);
 308
 309     WXDWORD exStyle = 0;
 310     WXDWORD msStyle = MSWGetStyle(GetWindowStyle(), & exStyle) ;
 311
 312     // calculate the sizes: the size given is the toal size for both controls
 313     // and we need to fit them both in the given width (height is the same)
 314     wxSize sizeText(size), sizeBtn(size);
 315     sizeBtn.x = wxSpinButton::DoGetBestSize().x;
 316     if ( sizeText.x <= 0 )
 317     {
 318         // DEFAULT_ITEM_WIDTH is the default width for the text control
 319         sizeText.x = DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN + sizeBtn.x;
 320     }
 321
 322     sizeText.x -= sizeBtn.x + MARGIN_BETWEEN;
 323     if ( sizeText.x <= 0 )
 324     {
 325         wxLogDebug(_T("not enough space for wxSpinCtrl!"));
 326     }
 327
 328     wxPoint posBtn(pos);
 329     posBtn.x += sizeText.x + MARGIN_BETWEEN;
 330
 331     // we must create the text control before the spin button for the purpose
 332     // of the dialog navigation: if there is a static text just before the spin
 333     // control, activating it by Alt-letter should give focus to the text
 334     // control, not the spin and the dialog navigation code will give focus to
 335     // the next control (at Windows level), not the one after it
 336
 337     // create the text window
 338
 339     m_hwndBuddy = (WXHWND)::CreateWindowEx
 340                     (
 341                      exStyle,                // sunken border
 342                      _T("EDIT"),             // window class
 343                      NULL,                   // no window title
 344                      msStyle,                // style (will be shown later)
 345                      pos.x, pos.y,           // position
 346                      0, 0,                   // size (will be set later)
 347                      GetHwndOf(parent),      // parent
 348                      (HMENU)-1,              // control id
 349                      wxGetInstance(),        // app instance
 350                      NULL                    // unused client data
 351                     );
 352
 353     if ( !m_hwndBuddy )
 354     {
 355         wxLogLastError(wxT("CreateWindow(buddy text window)"));
 356
 357         return false;
 358     }
 359
 360
 361     // create the spin button
 362     if ( !wxSpinButton::Create(parent, id, posBtn, sizeBtn, style, name) )
 363     {
 364         return false;
 365     }
 366
 367     SetRange(min, max);
 368     SetValue(initial);
 369
 370     // subclass the text ctrl to be able to intercept some events
 371     wxSetWindowUserData(GetBuddyHwnd(), this);
 372     m_wndProcBuddy = (WXFARPROC)wxSetWindowProc(GetBuddyHwnd(),
 373                                                 wxBuddyTextWndProc);
 374
 375     // set up fonts and colours  (This is nomally done in MSWCreateControl)
 376     InheritAttributes();
 377     if (!m_hasFont)
 378         SetFont(GetDefaultAttributes().font);
 379
 380     // set the size of the text window - can do it only now, because we
 381     // couldn't call DoGetBestSize() before as font wasn't set
 382     if ( sizeText.y <= 0 )
 383     {
 384         int cx, cy;
 385         wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
 386
 387         sizeText.y = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
 388     }
 389
 390     SetBestSize(size);
 391
 392     (void)::ShowWindow(GetBuddyHwnd(), SW_SHOW);
 393
 394     // associate the text window with the spin button
 395     (void)::SendMessage(GetHwnd(), UDM_SETBUDDY, (WPARAM)m_hwndBuddy, 0);
 396
 397     if ( !value.IsEmpty() )
 398     {
 399         SetValue(value);
 400     }
 401
 402     // do it after finishing with m_hwndBuddy creation to avoid generating
 403     // initial wxEVT_COMMAND_TEXT_UPDATED message
 404     ms_allSpins.Add(this);
 405
 406     return true;
 407 }
 408
 409 wxSpinCtrl::~wxSpinCtrl()
 410 {
 411     ms_allSpins.Remove(this);
 412
 413     // This removes spurious memory leak reporting
 414     if (ms_allSpins.GetCount() == 0)
 415         ms_allSpins.Clear();
 416
 417     // destroy the buddy window because this pointer which wxBuddyTextWndProc
 418     // uses will not soon be valid any more
 419     ::DestroyWindow(GetBuddyHwnd());
 420 }
 421
 422 // ----------------------------------------------------------------------------
 423 // wxTextCtrl-like methods
 424 // ----------------------------------------------------------------------------
 425
 426 void wxSpinCtrl::SetValue(const wxString& text)
 427 {
 428     if ( !::SetWindowText(GetBuddyHwnd(), text.c_str()) )
 429     {
 430         wxLogLastError(wxT("SetWindowText(buddy)"));
 431     }
 432 }
 433
 434 int wxSpinCtrl::GetValue() const
 435 {
 436     wxString val = wxGetWindowText(m_hwndBuddy);
 437
 438     long n;
 439     if ( (wxSscanf(val, wxT("%lu"), &n) != 1) )
 440         n = INT_MIN;
 441
 442     if (n < m_min) n = m_min;
 443     if (n > m_max) n = m_max;
 444
 445     return n;
 446 }
 447
 448 void wxSpinCtrl::SetSelection(long from, long to)
 449 {
 450     // if from and to are both -1, it means (in wxWidgets) that all text should
 451     // be selected - translate into Windows convention
 452     if ( (from == -1) && (to == -1) )
 453     {
 454         from = 0;
 455     }
 456
 457     ::SendMessage((HWND)m_hwndBuddy, EM_SETSEL, (WPARAM)from, (LPARAM)to);
 458 }
 459
 460 // ----------------------------------------------------------------------------
 461 // forward some methods to subcontrols
 462 // ----------------------------------------------------------------------------
 463
 464 bool wxSpinCtrl::SetFont(const wxFont& font)
 465 {
 466     if ( !wxWindowBase::SetFont(font) )
 467     {
 468         // nothing to do
 469         return false;
 470     }
 471
 472     WXHANDLE hFont = GetFont().GetResourceHandle();
 473     (void)::SendMessage(GetBuddyHwnd(), WM_SETFONT, (WPARAM)hFont, TRUE);
 474
 475     return true;
 476 }
 477
 478 bool wxSpinCtrl::Show(bool show)
 479 {
 480     if ( !wxControl::Show(show) )
 481     {
 482         return false;
 483     }
 484
 485     ::ShowWindow(GetBuddyHwnd(), show ? SW_SHOW : SW_HIDE);
 486
 487     return true;
 488 }
 489
 490 bool wxSpinCtrl::Enable(bool enable)
 491 {
 492     if ( !wxControl::Enable(enable) )
 493     {
 494         return false;
 495     }
 496
 497     ::EnableWindow(GetBuddyHwnd(), enable);
 498
 499     return true;
 500 }
 501
 502 void wxSpinCtrl::SetFocus()
 503 {
 504     ::SetFocus(GetBuddyHwnd());
 505 }
 506
 507 #if wxUSE_TOOLTIPS
 508
 509 void wxSpinCtrl::DoSetToolTip(wxToolTip *tip)
 510 {
 511     wxSpinButton::DoSetToolTip(tip);
 512
 513     if ( tip )
 514         tip->Add(m_hwndBuddy);
 515 }
 516
 517 #endif // wxUSE_TOOLTIPS
 518
 519 // ----------------------------------------------------------------------------
 520 // event processing
 521 // ----------------------------------------------------------------------------
 522
 523 void wxSpinCtrl::OnSpinChange(wxSpinEvent& eventSpin)
 524 {
 525     wxCommandEvent event(wxEVT_COMMAND_SPINCTRL_UPDATED, GetId());
 526     event.SetEventObject(this);
 527     event.SetInt(eventSpin.GetPosition());
 528
 529     (void)GetEventHandler()->ProcessEvent(event);
 530
 531     if ( eventSpin.GetSkipped() )
 532     {
 533         event.Skip();
 534     }
 535 }
 536
 537 // ----------------------------------------------------------------------------
 538 // size calculations
 539 // ----------------------------------------------------------------------------
 540
 541 wxSize wxSpinCtrl::DoGetBestSize() const
 542 {
 543     wxSize sizeBtn = wxSpinButton::DoGetBestSize();
 544     sizeBtn.x += DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN;
 545
 546     int y;
 547     wxGetCharSize(GetHWND(), NULL, &y, GetFont());
 548     y = EDIT_HEIGHT_FROM_CHAR_HEIGHT(y);
 549
 550     // JACS: we should always use the height calculated
 551     // from above, because otherwise we'll get a spin control
 552     // that's too big. So never use the height calculated
 553     // from wxSpinButton::DoGetBestSize().
 554
 555     // if ( sizeBtn.y < y )
 556     {
 557         // make the text tall enough
 558         sizeBtn.y = y;
 559     }
 560
 561     return sizeBtn;
 562 }
 563
 564 void wxSpinCtrl::DoMoveWindow(int x, int y, int width, int height)
 565 {
 566     int widthBtn = wxSpinButton::DoGetBestSize().x;
 567     int widthText = width - widthBtn - MARGIN_BETWEEN;
 568     if ( widthText <= 0 )
 569     {
 570         wxLogDebug(_T("not enough space for wxSpinCtrl!"));
 571     }
 572
 573     // if our parent had prepared a defer window handle for us, use it (unless
 574     // we are a top level window)
 575     wxWindowMSW *parent = GetParent();
 576     int originalX = x;
 577
 578 #if USE_DEFERRED_SIZING
 579     HDWP hdwp = parent && !IsTopLevel() ? (HDWP)parent->m_hDWP : NULL;
 580 #else
 581     HDWP hdwp = 0;
 582 #endif
 583
 584     // 1) The buddy window
 585     wxMoveWindowDeferred(hdwp, this, GetBuddyHwnd(),
 586                      x, y, widthText, height);
 587
 588     // 2) The button window
 589     x += widthText + MARGIN_BETWEEN;
 590     wxMoveWindowDeferred(hdwp, this, GetHwnd(),
 591                      x, y, widthBtn, height);
 592
 593 #if USE_DEFERRED_SIZING
 594     if (parent)
 595     {
 596         // hdwp must be updated as it may have been changed
 597         parent->m_hDWP = (WXHANDLE)hdwp;
 598     }
 599 #endif
 600 }
 601
 602 // get total size of the control
 603 void wxSpinCtrl::DoGetSize(int *x, int *y) const
 604 {
 605     RECT spinrect, textrect, ctrlrect;
 606     GetWindowRect(GetHwnd(), &spinrect);
 607     GetWindowRect(GetBuddyHwnd(), &textrect);
 608     UnionRect(&ctrlrect,&textrect, &spinrect);
 609
 610     if ( x )
 611         *x = ctrlrect.right - ctrlrect.left;
 612     if ( y )
 613         *y = ctrlrect.bottom - ctrlrect.top;
 614 }
 615
 616 void wxSpinCtrl::DoGetPosition(int *x, int *y) const
 617 {
 618     // hack: pretend that our HWND is the text control just for a moment
 619     WXHWND hWnd = GetHWND();
 620     wxConstCast(this, wxSpinCtrl)->m_hWnd = m_hwndBuddy;
 621
 622     wxSpinButton::DoGetPosition(x, y);
 623
 624     wxConstCast(this, wxSpinCtrl)->m_hWnd = hWnd;
 625 }
 626
 627 #endif // wxUSE_SPINCTRL
 628