src/univ/radiobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        univ/radiobox.cpp
   3 // Purpose:     wxRadioBox implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     11.09.00
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "univradiobox.h"
  22 #endif
  23
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #if wxUSE_RADIOBOX
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/dcclient.h"
  34     #include "wx/radiobox.h"
  35     #include "wx/radiobut.h"
  36     #include "wx/validate.h"
  37 #endif
  38
  39 #include "wx/tooltip.h"
  40
  41 #include "wx/univ/theme.h"
  42 #include "wx/univ/renderer.h"
  43 #include "wx/univ/inphand.h"
  44 #include "wx/univ/colschem.h"
  45
  46 // ----------------------------------------------------------------------------
  47 // constants
  48 // ----------------------------------------------------------------------------
  49
  50 static const int BUTTON_BORDER_X = 2;
  51 static const int BUTTON_BORDER_Y = 4;
  52
  53 static const int BOX_BORDER_X = 2;
  54 static const int BOX_BORDER_Y = 2;
  55
  56 // ----------------------------------------------------------------------------
  57 // wxRadioBox event handler
  58 // ----------------------------------------------------------------------------
  59
  60 class wxRadioHookHandler : public wxEvtHandler
  61 {
  62 public:
  63     wxRadioHookHandler(wxRadioBox *radio) { m_radio = radio; }
  64
  65     virtual bool ProcessEvent(wxEvent& event)
  66     {
  67         // we intercept the command events from radio buttons
  68         if ( event.GetEventType() == wxEVT_COMMAND_RADIOBUTTON_SELECTED )
  69         {
  70             m_radio->OnRadioButton(event);
  71         }
  72         else if ( event.GetEventType() == wxEVT_KEY_DOWN )
  73         {
  74             if ( m_radio->OnKeyDown((wxKeyEvent &)event) )
  75             {
  76                 return TRUE;
  77             }
  78         }
  79
  80         // just pass it on
  81         return GetNextHandler()->ProcessEvent(event);
  82     }
  83
  84 private:
  85     wxRadioBox *m_radio;
  86 };
  87
  88 // ============================================================================
  89 // implementation
  90 // ============================================================================
  91
  92 IMPLEMENT_DYNAMIC_CLASS(wxRadioBox, wxControl)
  93
  94 // ----------------------------------------------------------------------------
  95 // wxRadioBox creation
  96 // ----------------------------------------------------------------------------
  97
  98 void wxRadioBox::Init()
  99 {
 100     m_selection = -1;
 101     m_majorDim = 0;
 102 }
 103
 104 bool wxRadioBox::Create(wxWindow *parent,
 105                         wxWindowID id,
 106                         const wxString& title,
 107                         const wxPoint& pos,
 108                         const wxSize& size,
 109                         int n,
 110                         const wxString *choices,
 111                         int majorDim,
 112                         long style,
 113                         const wxValidator& val,
 114                         const wxString& name)
 115 {
 116     // for compatibility with the other ports which don't handle (yet?)
 117     // wxRA_LEFTTORIGHT and wxRA_TOPTOBOTTOM flags, we add them ourselves if
 118     // not specified
 119     if ( !(style & (wxRA_LEFTTORIGHT | wxRA_TOPTOBOTTOM)) )
 120     {
 121         // horizontal radiobox use left to right layout
 122         if ( style & wxRA_HORIZONTAL )
 123         {
 124             style |= wxRA_LEFTTORIGHT;
 125         }
 126         else if ( style & wxRA_VERTICAL )
 127         {
 128             style |= wxRA_TOPTOBOTTOM;
 129         }
 130         else
 131         {
 132             wxFAIL_MSG( _T("you must specify wxRA_XXX style!") );
 133
 134             // use default
 135             style = wxRA_HORIZONTAL | wxRA_LEFTTORIGHT;
 136         }
 137     }
 138
 139     if ( !wxStaticBox::Create(parent, id, title, pos, size, style, name) )
 140         return FALSE;
 141
 142 #if wxUSE_VALIDATORS
 143     SetValidator(val);
 144 #endif // wxUSE_VALIDATORS
 145
 146     Append(n, choices);
 147
 148     // majorDim default value is 0 which means make one row/column
 149     SetMajorDim(majorDim == 0 ? n : majorDim);
 150
 151     if ( size == wxDefaultSize )
 152     {
 153         SetClientSize(DoGetBestClientSize());
 154     }
 155
 156     // radiobox should already have selection so select at least one item
 157     SetSelection(0);
 158
 159     return TRUE;
 160 }
 161
 162 wxRadioBox::~wxRadioBox()
 163 {
 164     // remove the event handlers we pushed on them from all buttons and delete
 165     // the buttons themselves: this must be done as the user code expects them
 166     // to disappear now and not some time later when they will be deleted by
 167     // our (common) parent
 168     size_t count = m_buttons.GetCount();
 169     for ( size_t n = 0; n < count; n++ )
 170     {
 171         m_buttons[n]->PopEventHandler(TRUE /* delete it */);
 172
 173         delete m_buttons[n];
 174     }
 175 }
 176
 177 // ----------------------------------------------------------------------------
 178 // wxRadioBox init
 179 // ----------------------------------------------------------------------------
 180
 181 void wxRadioBox::SetMajorDim(int majorDim)
 182 {
 183     wxCHECK_RET( majorDim != 0, _T("major radiobox dimension can't be 0") );
 184
 185     m_majorDim = majorDim;
 186
 187     int minorDim = (GetCount() + m_majorDim - 1) / m_majorDim;
 188
 189     if ( GetWindowStyle() & wxRA_SPECIFY_COLS )
 190     {
 191         m_numCols = majorDim;
 192         m_numRows = minorDim;
 193     }
 194     else // wxRA_SPECIFY_ROWS
 195     {
 196         m_numCols = minorDim;
 197         m_numRows = majorDim;
 198     }
 199 }
 200
 201 void wxRadioBox::Append(int count, const wxString *choices)
 202 {
 203     if ( !count )
 204         return;
 205
 206     wxWindow *parent = GetParent();
 207     m_buttons.Alloc(count);
 208     for ( int n = 0; n < count; n++ )
 209     {
 210         // make the first button in the box the start of new group by giving it
 211         // wxRB_GROUP style
 212         wxRadioButton *btn = new wxRadioButton(parent, -1, choices[n],
 213                                                wxDefaultPosition,
 214                                                wxDefaultSize,
 215                                                n == 0 ? wxRB_GROUP : 0);
 216
 217         // we want to get the events from the buttons to translate it into
 218         btn->PushEventHandler(new wxRadioHookHandler(this));
 219         m_buttons.Add(btn);
 220     }
 221 }
 222
 223 // ----------------------------------------------------------------------------
 224 // selection
 225 // ----------------------------------------------------------------------------
 226
 227 void wxRadioBox::SetSelection(int n)
 228 {
 229     wxCHECK_RET( IsValid(n), _T("invalid index in wxRadioBox::SetSelection") );
 230
 231     m_selection = n;
 232
 233     wxRadioButton *btn = m_buttons[n];
 234
 235     // the selected button is always focused in the radiobox
 236     btn->SetFocus();
 237
 238     // this will also unselect the previously selected button in our group
 239     btn->SetValue(TRUE);
 240 }
 241
 242 int wxRadioBox::GetSelection() const
 243 {
 244     return m_selection;
 245 }
 246
 247 void wxRadioBox::SendRadioEvent()
 248 {
 249     wxCHECK_RET( m_selection != -1, _T("no active radio button") );
 250
 251     wxCommandEvent event(wxEVT_COMMAND_RADIOBOX_SELECTED, GetId());
 252     InitCommandEvent(event);
 253     event.SetInt(m_selection);
 254     event.SetString(GetString(m_selection));
 255
 256     Command(event);
 257 }
 258
 259 void wxRadioBox::OnRadioButton(wxEvent& event)
 260 {
 261     int n = m_buttons.Index((wxRadioButton *)event.GetEventObject());
 262     wxCHECK_RET( n != wxNOT_FOUND, _T("click from alien radio button") );
 263
 264     m_selection = n;
 265
 266     SendRadioEvent();
 267 }
 268
 269 // ----------------------------------------------------------------------------
 270 // methods forwarded to the buttons
 271 // ----------------------------------------------------------------------------
 272
 273 wxString wxRadioBox::GetString(int n) const
 274 {
 275     wxCHECK_MSG( IsValid(n), _T(""),
 276                  _T("invalid index in wxRadioBox::GetString") );
 277
 278     return m_buttons[n]->GetLabel();
 279 }
 280
 281 void wxRadioBox::SetString(int n, const wxString& label)
 282 {
 283     wxCHECK_RET( IsValid(n), _T("invalid index in wxRadioBox::SetString") );
 284
 285     m_buttons[n]->SetLabel(label);
 286 }
 287
 288 void wxRadioBox::Enable(int n, bool enable)
 289 {
 290     wxCHECK_RET( IsValid(n), _T("invalid index in wxRadioBox::Enable") );
 291
 292     m_buttons[n]->Enable(enable);
 293 }
 294
 295 void wxRadioBox::Show(int n, bool show)
 296 {
 297     wxCHECK_RET( IsValid(n), _T("invalid index in wxRadioBox::Show") );
 298
 299     m_buttons[n]->Show(show);
 300 }
 301
 302 // ----------------------------------------------------------------------------
 303 // methods forwarded to the static box
 304 // ----------------------------------------------------------------------------
 305
 306 bool wxRadioBox::Enable(bool enable)
 307 {
 308     if ( !wxStaticBox::Enable(enable) )
 309         return FALSE;
 310
 311     // also enable/disable the buttons
 312     size_t count = m_buttons.GetCount();
 313     for ( size_t n = 0; n < count; n++ )
 314     {
 315         Enable(n, enable);
 316     }
 317
 318     return TRUE;
 319 }
 320
 321 bool wxRadioBox::Show(bool show)
 322 {
 323     if ( !wxStaticBox::Show(show) )
 324         return FALSE;
 325
 326     // also show/hide the buttons
 327     size_t count = m_buttons.GetCount();
 328     for ( size_t n = 0; n < count; n++ )
 329     {
 330         Show(n, show);
 331     }
 332
 333     return TRUE;
 334 }
 335
 336 wxString wxRadioBox::GetLabel() const
 337 {
 338     return wxStaticBox::GetLabel();
 339 }
 340
 341 void wxRadioBox::SetLabel(const wxString& label)
 342 {
 343     wxStaticBox::SetLabel(label);
 344 }
 345
 346 #if wxUSE_TOOLTIPS
 347 void wxRadioBox::DoSetToolTip(wxToolTip *tooltip)
 348 {
 349     wxControl::DoSetToolTip(tooltip);
 350
 351     // Also set them for all Radio Buttons
 352     size_t count = m_buttons.GetCount();
 353     for ( size_t n = 0; n < count; n++ )
 354     {
 355         if (tooltip)
 356             m_buttons[n]->SetToolTip(tooltip->GetTip());
 357         else
 358             m_buttons[n]->SetToolTip(NULL);
 359     }
 360 }
 361 #endif // wxUSE_TOOLTIPS
 362
 363 // ----------------------------------------------------------------------------
 364 // buttons positioning
 365 // ----------------------------------------------------------------------------
 366
 367 wxSize wxRadioBox::GetMaxButtonSize() const
 368 {
 369     int widthMax, heightMax, width, height;
 370     widthMax = heightMax = 0;
 371
 372     int count = GetCount();
 373     for ( int n = 0; n < count; n++ )
 374     {
 375         m_buttons[n]->GetBestSize(&width, &height);
 376
 377         if ( width > widthMax )
 378             widthMax = width;
 379         if ( height > heightMax )
 380             heightMax = height;
 381     }
 382
 383     return wxSize(widthMax + BUTTON_BORDER_X, heightMax + BUTTON_BORDER_Y);
 384 }
 385
 386 wxSize wxRadioBox::DoGetBestClientSize() const
 387 {
 388     wxSize sizeBtn = GetMaxButtonSize();
 389
 390     sizeBtn.x *= m_numCols;
 391     sizeBtn.y *= m_numRows;
 392
 393     // add a border around all buttons
 394     sizeBtn.x += 2*BOX_BORDER_X;
 395     sizeBtn.y += 2*BOX_BORDER_Y;
 396
 397     // account for the area taken by static box
 398     wxRect rect = GetBorderGeometry();
 399     sizeBtn.x += rect.x + rect.width;
 400     sizeBtn.y += rect.y + rect.height;
 401
 402     return sizeBtn;
 403 }
 404
 405 void wxRadioBox::DoMoveWindow(int x0, int y0, int width, int height)
 406 {
 407     wxStaticBox::DoMoveWindow(x0, y0, width, height);
 408
 409     wxSize sizeBtn = GetMaxButtonSize();
 410     wxPoint ptOrigin = GetBoxAreaOrigin();
 411     wxPoint clientOrigin = GetParent() ? GetParent()->GetClientAreaOrigin() : wxPoint(0,0);
 412
 413     x0 += ptOrigin.x + BOX_BORDER_X - clientOrigin.x;
 414     y0 += ptOrigin.y + BOX_BORDER_Y - clientOrigin.y;
 415
 416     int x = x0,
 417         y = y0;
 418
 419     int count = GetCount();
 420     for ( int n = 0; n < count; n++ )
 421     {
 422         m_buttons[n]->SetSize(x, y, sizeBtn.x, sizeBtn.y);
 423
 424         if ( GetWindowStyle() & wxRA_TOPTOBOTTOM )
 425         {
 426             // from top to bottom
 427             if ( (n + 1) % m_numRows )
 428             {
 429                 // continue in this column
 430                 y += sizeBtn.y;
 431             }
 432             else
 433             {
 434                 // start a new column
 435                 x += sizeBtn.x;
 436                 y = y0;
 437             }
 438         }
 439         else // wxRA_LEFTTORIGHT: mirror the code above
 440         {
 441             // from left to right
 442             if ( (n + 1) % m_numCols )
 443             {
 444                 // continue in this row
 445                 x += sizeBtn.x;
 446             }
 447             else
 448             {
 449                 // start a new row
 450                 y += sizeBtn.y;
 451                 x = x0;
 452             }
 453         }
 454     }
 455 }
 456
 457 // ----------------------------------------------------------------------------
 458 // keyboard navigation
 459 // ----------------------------------------------------------------------------
 460
 461 bool wxRadioBox::OnKeyDown(wxKeyEvent& event)
 462 {
 463     wxDirection dir;
 464     switch ( event.GetKeyCode() )
 465     {
 466         case WXK_UP:
 467             dir = wxUP;
 468             break;
 469
 470         case WXK_LEFT:
 471             dir = wxLEFT;
 472             break;
 473
 474         case WXK_DOWN:
 475             dir = wxDOWN;
 476             break;
 477
 478         case WXK_RIGHT:
 479             dir = wxRIGHT;
 480             break;
 481
 482         default:
 483             return FALSE;
 484     }
 485
 486     int selOld = GetSelection();
 487     int selNew = GetNextItem(selOld, dir, GetWindowStyle());
 488     if ( selNew != selOld )
 489     {
 490         SetSelection(selNew);
 491
 492         // emulate the button click
 493         SendRadioEvent();
 494     }
 495
 496     return TRUE;
 497 }
 498
 499 #endif // wxUSE_RADIOBOX
 500