src/msw/wince/choicece.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/wince/choicece.cpp
   3 // Purpose:     wxChoice implementation for Smartphones
   4 // Author:      Wlodzimierz ABX Skiba
   5 // Modified by:
   6 // Created:     29.07.2004
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Wlodzimierz Skiba
   9 // License:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12
  13 // ============================================================================
  14 // declarations
  15 // ============================================================================
  16
  17 // ----------------------------------------------------------------------------
  18 // headers
  19 // ----------------------------------------------------------------------------
  20
  21 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  22     #pragma implementation "choicece.h"
  23 #endif
  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/choice.h"
  34 #endif
  35
  36 #include "wx/spinbutt.h" // for wxSpinnerBestSize
  37
  38 #include <commctrl.h>
  39 #include "wx/msw/missing.h"
  40 #include "wx/msw/winundef.h"
  41
  42 #if wxUSE_CHOICE && defined(__SMARTPHONE__)
  43
  44 #if wxUSE_EXTENDED_RTTI
  45 // TODO
  46 #else
  47 IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
  48 #endif
  49
  50 #define GetBuddyHwnd()      (HWND)(m_hwndBuddy)
  51
  52 #define IsVertical(wxStyle) ( (wxStyle & wxSP_HORIZONTAL) != wxSP_HORIZONTAL )
  53
  54 // ----------------------------------------------------------------------------
  55 // constants
  56 // ----------------------------------------------------------------------------
  57
  58 // the margin between the up-down control and its buddy (can be arbitrary,
  59 // choose what you like - or may be decide during run-time depending on the
  60 // font size?)
  61 static const int MARGIN_BETWEEN = 0;
  62
  63 // ============================================================================
  64 // implementation
  65 // ============================================================================
  66
  67 wxArrayChoiceSpins wxChoice::ms_allChoiceSpins;
  68
  69 // ----------------------------------------------------------------------------
  70 // wnd proc for the buddy text ctrl
  71 // ----------------------------------------------------------------------------
  72
  73 LRESULT APIENTRY _EXPORT wxBuddyChoiceWndProc(HWND hwnd,
  74                                             UINT message,
  75                                             WPARAM wParam,
  76                                             LPARAM lParam)
  77 {
  78     wxChoice *spin = (wxChoice *)wxGetWindowUserData(hwnd);
  79
  80     // forward some messages (the key and focus ones only so far) to
  81     // the spin ctrl
  82     switch ( message )
  83     {
  84         case WM_SETFOCUS:
  85             // if the focus comes from the spin control itself, don't set it
  86             // back to it -- we don't want to go into an infinite loop
  87             if ( (WXHWND)wParam == spin->GetHWND() )
  88                 break;
  89             //else: fall through
  90
  91         case WM_KILLFOCUS:
  92         case WM_CHAR:
  93         case WM_DEADCHAR:
  94         case WM_KEYUP:
  95         case WM_KEYDOWN:
  96             spin->MSWWindowProc(message, wParam, lParam);
  97
  98             // The control may have been deleted at this point, so check.
  99             if ( !::IsWindow(hwnd) || wxGetWindowUserData(hwnd) != spin )
 100                 return 0;
 101             break;
 102
 103         case WM_GETDLGCODE:
 104             // we want to get WXK_RETURN in order to generate the event for it
 105             return DLGC_WANTCHARS;
 106     }
 107
 108     return ::CallWindowProc(CASTWNDPROC spin->GetBuddyWndProc(),
 109                             hwnd, message, wParam, lParam);
 110 }
 111
 112 // ----------------------------------------------------------------------------
 113 // creation
 114 // ----------------------------------------------------------------------------
 115
 116 bool wxChoice::Create(wxWindow *parent,
 117                       wxWindowID id,
 118                       const wxPoint& pos,
 119                       const wxSize& size,
 120                       int n, const wxString choices[],
 121                       long style,
 122                       const wxValidator& validator,
 123                       const wxString& name)
 124 {
 125     return CreateAndInit(parent, id, pos, size, n, choices, style,
 126                          validator, name);
 127 }
 128
 129 bool wxChoice::CreateAndInit(wxWindow *parent,
 130                              wxWindowID id,
 131                              const wxPoint& pos,
 132                              const wxSize& size,
 133                              int n, const wxString choices[],
 134                              long style,
 135                              const wxValidator& validator,
 136                              const wxString& name)
 137 {
 138     if ( !(style & wxSP_VERTICAL) )
 139         style |= wxSP_HORIZONTAL;
 140
 141     if ( (style & wxBORDER_MASK) == wxBORDER_DEFAULT )
 142         style |= wxBORDER_SIMPLE;
 143
 144     style |= wxSP_ARROW_KEYS;
 145
 146     SetWindowStyle(style);
 147
 148     WXDWORD exStyle = 0;
 149     WXDWORD msStyle = MSWGetStyle(GetWindowStyle(), & exStyle) ;
 150
 151     wxSize sizeText(size), sizeBtn(size);
 152     sizeBtn.x = GetBestSpinerSize(IsVertical(style)).x;
 153
 154     sizeBtn.x;
 155
 156     if ( sizeText.x == wxDefaultCoord )
 157     {
 158         // DEFAULT_ITEM_WIDTH is the default width for the text control
 159         sizeText.x = DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN + sizeBtn.x;
 160     }
 161
 162     sizeText.x -= sizeBtn.x + MARGIN_BETWEEN;
 163     if ( sizeText.x <= 0 )
 164     {
 165         wxLogDebug(_T("not enough space for wxSpinCtrl!"));
 166     }
 167
 168     wxPoint posBtn(pos);
 169     posBtn.x += sizeText.x + MARGIN_BETWEEN;
 170
 171     // we must create the list control before the spin button for the purpose
 172     // of the dialog navigation: if there is a static text just before the spin
 173     // control, activating it by Alt-letter should give focus to the text
 174     // control, not the spin and the dialog navigation code will give focus to
 175     // the next control (at Windows level), not the one after it
 176
 177     // create the text window
 178
 179     m_hwndBuddy = (WXHWND)::CreateWindowEx
 180                     (
 181                      exStyle,                // sunken border
 182                      _T("LISTBOX"),          // window class
 183                      NULL,                   // no window title
 184                      msStyle,                // style (will be shown later)
 185                      pos.x, pos.y,           // position
 186                      0, 0,                   // size (will be set later)
 187                      GetHwndOf(parent),      // parent
 188                      (HMENU)-1,              // control id
 189                      wxGetInstance(),        // app instance
 190                      NULL                    // unused client data
 191                     );
 192
 193     if ( !m_hwndBuddy )
 194     {
 195         wxLogLastError(wxT("CreateWindow(buddy text window)"));
 196
 197         return false;
 198     }
 199
 200     // initialize wxControl
 201     if ( !CreateControl(parent, id, posBtn, sizeBtn, style, validator, name) )
 202         return false;
 203
 204     // now create the real HWND
 205     WXDWORD spiner_style = WS_VISIBLE |
 206                            UDS_ALIGNRIGHT |
 207                            UDS_ARROWKEYS |
 208                            UDS_SETBUDDYINT |
 209                            UDS_EXPANDABLE;
 210
 211     if ( !IsVertical(style) )
 212         spiner_style |= UDS_HORZ;
 213
 214     if ( style & wxSP_WRAP )
 215         spiner_style |= UDS_WRAP;
 216
 217     if ( !MSWCreateControl(UPDOWN_CLASS, spiner_style, posBtn, sizeBtn, _T(""), 0) )
 218         return false;
 219
 220     // subclass the text ctrl to be able to intercept some events
 221     wxSetWindowUserData(GetBuddyHwnd(), this);
 222     m_wndProcBuddy = (WXFARPROC)wxSetWindowProc(GetBuddyHwnd(),
 223                                                 wxBuddyChoiceWndProc);
 224
 225     // set up fonts and colours  (This is nomally done in MSWCreateControl)
 226     InheritAttributes();
 227     if (!m_hasFont)
 228         SetFont(GetDefaultAttributes().font);
 229
 230     // set the size of the text window - can do it only now, because we
 231     // couldn't call DoGetBestSize() before as font wasn't set
 232     if ( sizeText.y <= 0 )
 233     {
 234         int cx, cy;
 235         wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
 236
 237         sizeText.y = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
 238     }
 239
 240     SetBestSize(size);
 241
 242     (void)::ShowWindow(GetBuddyHwnd(), SW_SHOW);
 243
 244     // associate the list window with the spin button
 245     (void)::SendMessage(GetHwnd(), UDM_SETBUDDY, (WPARAM)GetBuddyHwnd(), 0);
 246
 247     // do it after finishing with m_hwndBuddy creation to avoid generating
 248     // initial wxEVT_COMMAND_TEXT_UPDATED message
 249     ms_allChoiceSpins.Add(this);
 250
 251     // initialize the controls contents
 252     for ( int i = 0; i < n; i++ )
 253     {
 254         Append(choices[i]);
 255     }
 256
 257     return true;
 258 }
 259
 260 bool wxChoice::Create(wxWindow *parent,
 261                       wxWindowID id,
 262                       const wxPoint& pos,
 263                       const wxSize& size,
 264                       const wxArrayString& choices,
 265                       long style,
 266                       const wxValidator& validator,
 267                       const wxString& name)
 268 {
 269     wxCArrayString chs(choices);
 270     return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
 271                   style, validator, name);
 272 }
 273
 274 WXDWORD wxChoice::MSWGetStyle(long style, WXDWORD *exstyle) const
 275 {
 276     // we never have an external border
 277     WXDWORD msStyle = wxControl::MSWGetStyle
 278                       (
 279                         (style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle
 280                       );
 281
 282     msStyle |= WS_VISIBLE;
 283
 284     // wxChoice-specific styles
 285     msStyle |= LBS_NOINTEGRALHEIGHT;
 286     if ( style & wxCB_SORT )
 287         msStyle |= LBS_SORT;
 288
 289     return msStyle;
 290 }
 291
 292 wxChoice::~wxChoice()
 293 {
 294     Free();
 295 }
 296
 297 // ----------------------------------------------------------------------------
 298 // adding/deleting items to/from the list
 299 // ----------------------------------------------------------------------------
 300
 301 int wxChoice::DoAppend(const wxString& item)
 302 {
 303     int n = (int)SendMessage(GetBuddyHwnd(), LB_ADDSTRING, 0, (LPARAM)item.c_str());
 304
 305     if ( n == LB_ERR )
 306     {
 307         wxLogLastError(wxT("SendMessage(LB_ADDSTRING)"));
 308     }
 309
 310     return n;
 311 }
 312
 313 int wxChoice::DoInsert(const wxString& item, int pos)
 314 {
 315     wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into choice"));
 316     wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
 317
 318     int n = (int)SendMessage(GetBuddyHwnd(), LB_INSERTSTRING, pos, (LPARAM)item.c_str());
 319     if ( n == LB_ERR )
 320     {
 321         wxLogLastError(wxT("SendMessage(LB_INSERTSTRING)"));
 322     }
 323
 324     return n;
 325 }
 326
 327 void wxChoice::Delete(int n)
 328 {
 329     wxCHECK_RET( n < GetCount(), wxT("invalid item index in wxChoice::Delete") );
 330
 331     if ( HasClientObjectData() )
 332     {
 333         delete GetClientObject(n);
 334     }
 335
 336     SendMessage(GetBuddyHwnd(), LB_DELETESTRING, n, 0);
 337 }
 338
 339 void wxChoice::Clear()
 340 {
 341     Free();
 342
 343     SendMessage(GetBuddyHwnd(), LB_RESETCONTENT, 0, 0);
 344 }
 345
 346 void wxChoice::Free()
 347 {
 348     if ( HasClientObjectData() )
 349     {
 350         size_t count = GetCount();
 351         for ( size_t n = 0; n < count; n++ )
 352         {
 353             delete GetClientObject(n);
 354         }
 355     }
 356 }
 357
 358 // ----------------------------------------------------------------------------
 359 // selection
 360 // ----------------------------------------------------------------------------
 361
 362 int wxChoice::GetSelection() const
 363 {
 364     return (int)SendMessage(GetBuddyHwnd(), LB_GETCURSEL, 0, 0);
 365 }
 366
 367 void wxChoice::SetSelection(int n)
 368 {
 369     SendMessage(GetBuddyHwnd(), LB_SETCURSEL, n, 0);
 370 }
 371
 372 // ----------------------------------------------------------------------------
 373 // string list functions
 374 // ----------------------------------------------------------------------------
 375
 376 int wxChoice::GetCount() const
 377 {
 378     return (int)SendMessage(GetBuddyHwnd(), LB_GETCOUNT, 0, 0);
 379 }
 380
 381 int wxChoice::FindString(const wxString& s) const
 382 {
 383     int pos = (int)SendMessage(GetBuddyHwnd(), LB_FINDSTRINGEXACT,
 384                                (WPARAM)-1, (LPARAM)s.c_str());
 385
 386     return pos == LB_ERR ? wxNOT_FOUND : pos;
 387 }
 388
 389 void wxChoice::SetString(int n, const wxString& s)
 390 {
 391     wxCHECK_RET( n >= 0 && n < GetCount(),
 392                  wxT("invalid item index in wxChoice::SetString") );
 393
 394     // we have to delete and add back the string as there is no way to change a
 395     // string in place
 396
 397     // we need to preserve the client data
 398     void *data;
 399     if ( m_clientDataItemsType != wxClientData_None )
 400     {
 401         data = DoGetItemClientData(n);
 402     }
 403     else // no client data
 404     {
 405         data = NULL;
 406     }
 407
 408     ::SendMessage(GetBuddyHwnd(), LB_DELETESTRING, n, 0);
 409     ::SendMessage(GetBuddyHwnd(), LB_INSERTSTRING, n, (LPARAM)s.c_str() );
 410
 411     if ( data )
 412     {
 413         DoSetItemClientData(n, data);
 414     }
 415     //else: it's already NULL by default
 416 }
 417
 418 wxString wxChoice::GetString(int n) const
 419 {
 420     int len = (int)::SendMessage(GetBuddyHwnd(), LB_GETTEXTLEN, n, 0);
 421
 422     wxString str;
 423     if ( len != LB_ERR && len > 0 )
 424     {
 425         if ( ::SendMessage
 426                (
 427                 GetBuddyHwnd(),
 428                 LB_GETTEXT,
 429                 n,
 430                 (LPARAM)(wxChar *)wxStringBuffer(str, len)
 431                 ) == LB_ERR )
 432         {
 433             wxLogLastError(wxT("SendMessage(LB_GETLBTEXT)"));
 434         }
 435     }
 436
 437     return str;
 438 }
 439
 440 // ----------------------------------------------------------------------------
 441 // client data
 442 // ----------------------------------------------------------------------------
 443
 444 void wxChoice::DoSetItemClientData( int n, void* clientData )
 445 {
 446     if ( ::SendMessage(GetHwnd(), LB_SETITEMDATA,
 447                        n, (LPARAM)clientData) == LB_ERR )
 448     {
 449         wxLogLastError(wxT("LB_SETITEMDATA"));
 450     }
 451 }
 452
 453 void* wxChoice::DoGetItemClientData( int n ) const
 454 {
 455     LPARAM rc = SendMessage(GetHwnd(), LB_GETITEMDATA, n, 0);
 456     if ( rc == LB_ERR )
 457     {
 458         wxLogLastError(wxT("LB_GETITEMDATA"));
 459
 460         // unfortunately, there is no way to return an error code to the user
 461         rc = (LPARAM) NULL;
 462     }
 463
 464     return (void *)rc;
 465 }
 466
 467 void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData )
 468 {
 469     DoSetItemClientData(n, clientData);
 470 }
 471
 472 wxClientData* wxChoice::DoGetItemClientObject( int n ) const
 473 {
 474     return (wxClientData *)DoGetItemClientData(n);
 475 }
 476
 477 // ----------------------------------------------------------------------------
 478 // size calculations
 479 // ----------------------------------------------------------------------------
 480
 481 wxSize wxChoice::DoGetBestSize() const
 482 {
 483     wxSize sizeBtn = GetBestSpinerSize(IsVertical(GetWindowStyle()));
 484     sizeBtn.x += DEFAULT_ITEM_WIDTH + MARGIN_BETWEEN;
 485
 486     int y;
 487     wxGetCharSize(GetHWND(), NULL, &y, GetFont());
 488     y = EDIT_HEIGHT_FROM_CHAR_HEIGHT(y);
 489
 490     // JACS: we should always use the height calculated
 491     // from above, because otherwise we'll get a spin control
 492     // that's too big. So never use the height calculated
 493     // from wxSpinButton::DoGetBestSize().
 494
 495     // if ( sizeBtn.y < y )
 496     {
 497         // make the text tall enough
 498         sizeBtn.y = y;
 499     }
 500
 501     return sizeBtn;
 502 }
 503
 504 void wxChoice::DoMoveWindow(int x, int y, int width, int height)
 505 {
 506     int widthBtn = GetBestSpinerSize(IsVertical(GetWindowStyle())).x;
 507     int widthText = width - widthBtn - MARGIN_BETWEEN;
 508     if ( widthText <= 0 )
 509     {
 510         wxLogDebug(_T("not enough space for wxSpinCtrl!"));
 511     }
 512
 513     if ( !::MoveWindow(GetBuddyHwnd(), x, y, widthText, height, TRUE) )
 514     {
 515         wxLogLastError(wxT("MoveWindow(buddy)"));
 516     }
 517
 518     x += widthText + MARGIN_BETWEEN;
 519     if ( !::MoveWindow(GetHwnd(), x, y, widthBtn, height, TRUE) )
 520     {
 521         wxLogLastError(wxT("MoveWindow"));
 522     }
 523 }
 524
 525 // get total size of the control
 526 void wxChoice::DoGetSize(int *x, int *y) const
 527 {
 528     RECT spinrect, textrect, ctrlrect;
 529     GetWindowRect(GetHwnd(), &spinrect);
 530     GetWindowRect(GetBuddyHwnd(), &textrect);
 531     UnionRect(&ctrlrect, &textrect, &spinrect);
 532
 533     if ( x )
 534         *x = ctrlrect.right - ctrlrect.left;
 535     if ( y )
 536         *y = ctrlrect.bottom - ctrlrect.top;
 537 }
 538
 539 void wxChoice::DoGetPosition(int *x, int *y) const
 540 {
 541     // hack: pretend that our HWND is the text control just for a moment
 542     WXHWND hWnd = GetHWND();
 543     wxConstCast(this, wxChoice)->m_hWnd = m_hwndBuddy;
 544
 545     wxChoiceBase::DoGetPosition(x, y);
 546
 547     wxConstCast(this, wxChoice)->m_hWnd = hWnd;
 548 }
 549
 550 #endif // wxUSE_CHOICE && __SMARTPHONE__