src/msw/spinctrl.cpp

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