src/univ/radiobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_RADIOBOX
  27
  28 #ifndef WX_PRECOMP
  29     #include "wx/dcclient.h"
  30     #include "wx/radiobox.h"
  31     #include "wx/radiobut.h"
  32     #include "wx/validate.h"
  33     #include "wx/arrstr.h"
  34 #endif
  35
  36 #include "wx/tooltip.h"
  37
  38 #include "wx/univ/theme.h"
  39 #include "wx/univ/renderer.h"
  40 #include "wx/univ/inphand.h"
  41 #include "wx/univ/colschem.h"
  42
  43 // ----------------------------------------------------------------------------
  44 // constants
  45 // ----------------------------------------------------------------------------
  46
  47 static const int BUTTON_BORDER_X = 2;
  48 static const int BUTTON_BORDER_Y = 4;
  49
  50 static const int BOX_BORDER_X = 2;
  51 static const int BOX_BORDER_Y = 2;
  52
  53 // ----------------------------------------------------------------------------
  54 // wxRadioBox event handler
  55 // ----------------------------------------------------------------------------
  56
  57 class wxRadioHookHandler : public wxEvtHandler
  58 {
  59 public:
  60     wxRadioHookHandler(wxRadioBox *radio) { m_radio = radio; }
  61
  62     virtual bool ProcessEvent(wxEvent& event)
  63     {
  64         // we intercept the command events from radio buttons
  65         if ( event.GetEventType() == wxEVT_COMMAND_RADIOBUTTON_SELECTED )
  66         {
  67             m_radio->OnRadioButton(event);
  68         }
  69         else if ( event.GetEventType() == wxEVT_KEY_DOWN )
  70         {
  71             if ( m_radio->OnKeyDown((wxKeyEvent &)event) )
  72             {
  73                 return true;
  74             }
  75         }
  76
  77         // just pass it on
  78         return GetNextHandler()->ProcessEvent(event);
  79     }
  80
  81 private:
  82     wxRadioBox *m_radio;
  83 };
  84
  85 // ============================================================================
  86 // implementation
  87 // ============================================================================
  88
  89 IMPLEMENT_DYNAMIC_CLASS(wxRadioBox, wxControl)
  90
  91 // ----------------------------------------------------------------------------
  92 // wxRadioBox creation
  93 // ----------------------------------------------------------------------------
  94
  95 void wxRadioBox::Init()
  96 {
  97     m_selection = -1;
  98 }
  99
 100 wxRadioBox::wxRadioBox(wxWindow *parent, wxWindowID id, const wxString& title,
 101                        const wxPoint& pos, const wxSize& size,
 102                        const wxArrayString& choices,
 103                        int majorDim, long style,
 104                        const wxValidator& val, const wxString& name)
 105 {
 106     wxCArrayString chs(choices);
 107
 108     Init();
 109
 110     (void)Create(parent, id, title, pos, size, chs.GetCount(),
 111                  chs.GetStrings(), majorDim, style, val, name);
 112 }
 113
 114 bool wxRadioBox::Create(wxWindow *parent,
 115                         wxWindowID id,
 116                         const wxString& title,
 117                         const wxPoint& pos,
 118                         const wxSize& size,
 119                         const wxArrayString& choices,
 120                         int majorDim,
 121                         long style,
 122                         const wxValidator& val,
 123                         const wxString& name)
 124 {
 125     wxCArrayString chs(choices);
 126
 127     return Create(parent, id, title, pos, size, chs.GetCount(),
 128                   chs.GetStrings(), majorDim, style, val, name);
 129 }
 130
 131 bool wxRadioBox::Create(wxWindow *parent,
 132                         wxWindowID id,
 133                         const wxString& title,
 134                         const wxPoint& pos,
 135                         const wxSize& size,
 136                         int n,
 137                         const wxString *choices,
 138                         int majorDim,
 139                         long style,
 140                         const wxValidator& wxVALIDATOR_PARAM(val),
 141                         const wxString& name)
 142 {
 143     // for compatibility with the other ports which don't handle (yet?)
 144     // wxRA_LEFTTORIGHT and wxRA_TOPTOBOTTOM flags, we add them ourselves if
 145     // not specified
 146     if ( !(style & (wxRA_LEFTTORIGHT | wxRA_TOPTOBOTTOM)) )
 147     {
 148         // horizontal radiobox use left to right layout
 149         if ( style & wxRA_HORIZONTAL )
 150         {
 151             style |= wxRA_LEFTTORIGHT;
 152         }
 153         else if ( style & wxRA_VERTICAL )
 154         {
 155             style |= wxRA_TOPTOBOTTOM;
 156         }
 157         else
 158         {
 159             wxFAIL_MSG( _T("you must specify wxRA_XXX style!") );
 160
 161             // use default
 162             style = wxRA_HORIZONTAL | wxRA_LEFTTORIGHT;
 163         }
 164     }
 165
 166     if ( !wxStaticBox::Create(parent, id, title, pos, size, style, name) )
 167         return false;
 168
 169 #if wxUSE_VALIDATORS
 170     SetValidator(val);
 171 #endif // wxUSE_VALIDATORS
 172
 173     Append(n, choices);
 174
 175     // majorDim default value is 0 which means make one row/column
 176     SetMajorDim(majorDim == 0 ? n : majorDim, style);
 177
 178     if ( size == wxDefaultSize )
 179     {
 180         SetClientSize(DoGetBestClientSize());
 181     }
 182
 183     // Need to move the radiobox in order to move the radio buttons
 184     wxPoint actualPos = GetPosition();
 185     wxSize actualSize = GetSize();
 186     DoMoveWindow(actualPos.x, actualPos.y, actualSize.x, actualSize.y);
 187
 188     // radiobox should already have selection so select at least one item
 189     SetSelection(0);
 190
 191     return true;
 192 }
 193
 194 wxRadioBox::~wxRadioBox()
 195 {
 196     // remove the event handlers we pushed on them from all buttons and delete
 197     // the buttons themselves: this must be done as the user code expects them
 198     // to disappear now and not some time later when they will be deleted by
 199     // our (common) parent
 200     unsigned int count = m_buttons.GetCount();
 201     for ( unsigned int n = 0; n < count; n++ )
 202     {
 203         m_buttons[n]->PopEventHandler(true /* delete it */);
 204
 205         delete m_buttons[n];
 206     }
 207 }
 208
 209 // ----------------------------------------------------------------------------
 210 // wxRadioBox init
 211 // ----------------------------------------------------------------------------
 212
 213 void wxRadioBox::Append(int count, const wxString *choices)
 214 {
 215     if ( !count )
 216         return;
 217
 218     wxWindow *parent = GetParent();
 219     m_buttons.Alloc(count);
 220     for ( int n = 0; n < count; n++ )
 221     {
 222         // make the first button in the box the start of new group by giving it
 223         // wxRB_GROUP style
 224         wxRadioButton *btn = new wxRadioButton(parent, wxID_ANY, choices[n],
 225                                                wxDefaultPosition,
 226                                                wxDefaultSize,
 227                                                n == 0 ? wxRB_GROUP : 0);
 228
 229         // we want to get the events from the buttons to translate it into
 230         btn->PushEventHandler(new wxRadioHookHandler(this));
 231         m_buttons.Add(btn);
 232     }
 233 }
 234
 235 // ----------------------------------------------------------------------------
 236 // selection
 237 // ----------------------------------------------------------------------------
 238
 239 void wxRadioBox::SetSelection(int n)
 240 {
 241     wxCHECK_RET( IsValid(n), _T("invalid index in wxRadioBox::SetSelection") );
 242
 243     m_selection = n;
 244
 245     wxRadioButton *btn = m_buttons[n];
 246
 247     // the selected button is always focused in the radiobox
 248     btn->SetFocus();
 249
 250     // this will also unselect the previously selected button in our group
 251     btn->SetValue(true);
 252 }
 253
 254 int wxRadioBox::GetSelection() const
 255 {
 256     return m_selection;
 257 }
 258
 259 void wxRadioBox::SendRadioEvent()
 260 {
 261     wxCHECK_RET( m_selection != -1, _T("no active radio button") );
 262
 263     wxCommandEvent event(wxEVT_COMMAND_RADIOBOX_SELECTED, GetId());
 264     InitCommandEvent(event);
 265     event.SetInt(m_selection);
 266     event.SetString(GetString(m_selection));
 267
 268     Command(event);
 269 }
 270
 271 void wxRadioBox::OnRadioButton(wxEvent& event)
 272 {
 273     int n = m_buttons.Index((wxRadioButton *)event.GetEventObject());
 274     wxCHECK_RET( n != wxNOT_FOUND, _T("click from alien radio button") );
 275
 276     m_selection = n;
 277
 278     SendRadioEvent();
 279 }
 280
 281 // ----------------------------------------------------------------------------
 282 // methods forwarded to the buttons
 283 // ----------------------------------------------------------------------------
 284
 285 wxString wxRadioBox::GetString(unsigned int n) const
 286 {
 287     wxCHECK_MSG( IsValid(n), wxEmptyString,
 288                  _T("invalid index in wxRadioBox::GetString") );
 289
 290     return m_buttons[n]->GetLabel();
 291 }
 292
 293 void wxRadioBox::SetString(unsigned int n, const wxString& label)
 294 {
 295     wxCHECK_RET( IsValid(n), _T("invalid index in wxRadioBox::SetString") );
 296
 297     m_buttons[n]->SetLabel(label);
 298 }
 299
 300 bool wxRadioBox::Enable(unsigned int n, bool enable)
 301 {
 302     wxCHECK_MSG( IsValid(n), false, _T("invalid index in wxRadioBox::Enable") );
 303
 304     return m_buttons[n]->Enable(enable);
 305 }
 306
 307 bool wxRadioBox::IsItemEnabled(unsigned int n) const
 308 {
 309     wxCHECK_MSG( IsValid(n), false, _T("invalid index in wxRadioBox::IsItemEnabled") );
 310
 311     return m_buttons[n]->IsEnabled();
 312 }
 313
 314 bool wxRadioBox::Show(unsigned int n, bool show)
 315 {
 316     wxCHECK_MSG( IsValid(n), false, _T("invalid index in wxRadioBox::Show") );
 317
 318     return m_buttons[n]->Show(show);
 319 }
 320
 321 bool wxRadioBox::IsItemShown(unsigned int n) const
 322 {
 323     wxCHECK_MSG( IsValid(n), false, _T("invalid index in wxRadioBox::IsItemShown") );
 324
 325     return m_buttons[n]->IsShown();
 326 }
 327
 328 // ----------------------------------------------------------------------------
 329 // methods forwarded to the static box
 330 // ----------------------------------------------------------------------------
 331
 332 bool wxRadioBox::Enable(bool enable)
 333 {
 334     if ( !wxStaticBox::Enable(enable) )
 335         return false;
 336
 337     // also enable/disable the buttons
 338     const unsigned int count = m_buttons.GetCount();
 339     for ( unsigned int n = 0; n < count; n++ )
 340     {
 341         Enable(n, enable);
 342     }
 343
 344     return true;
 345 }
 346
 347 bool wxRadioBox::Show(bool show)
 348 {
 349     if ( !wxStaticBox::Show(show) )
 350         return false;
 351
 352     // also show/hide the buttons
 353     const unsigned int count = m_buttons.GetCount();
 354     for ( unsigned int n = 0; n < count; n++ )
 355     {
 356         Show(n, show);
 357     }
 358
 359     return true;
 360 }
 361
 362 wxString wxRadioBox::GetLabel() const
 363 {
 364     return wxStaticBox::GetLabel();
 365 }
 366
 367 void wxRadioBox::SetLabel(const wxString& label)
 368 {
 369     wxStaticBox::SetLabel(label);
 370 }
 371
 372 #if wxUSE_TOOLTIPS
 373 void wxRadioBox::DoSetToolTip(wxToolTip *tooltip)
 374 {
 375     wxControl::DoSetToolTip(tooltip);
 376
 377     // Also set them for all Radio Buttons
 378     const unsigned int count = m_buttons.GetCount();
 379     for ( unsigned int n = 0; n < count; n++ )
 380     {
 381         if (tooltip)
 382             m_buttons[n]->SetToolTip(tooltip->GetTip());
 383         else
 384             m_buttons[n]->SetToolTip(NULL);
 385     }
 386 }
 387 #endif // wxUSE_TOOLTIPS
 388
 389 // ----------------------------------------------------------------------------
 390 // buttons positioning
 391 // ----------------------------------------------------------------------------
 392
 393 wxSize wxRadioBox::GetMaxButtonSize() const
 394 {
 395     int widthMax, heightMax, width = 0, height = 0;
 396     widthMax = heightMax = 0;
 397
 398     const unsigned int count = GetCount();
 399     for ( unsigned int n = 0; n < count; n++ )
 400     {
 401         m_buttons[n]->GetBestSize(&width, &height);
 402
 403         if ( width > widthMax )
 404             widthMax = width;
 405         if ( height > heightMax )
 406             heightMax = height;
 407     }
 408
 409     return wxSize(widthMax + BUTTON_BORDER_X, heightMax + BUTTON_BORDER_Y);
 410 }
 411
 412 wxSize wxRadioBox::DoGetBestClientSize() const
 413 {
 414     wxSize sizeBtn = GetMaxButtonSize();
 415
 416     sizeBtn.x *= GetColumnCount();
 417     sizeBtn.y *= GetRowCount();
 418
 419     // add a border around all buttons
 420     sizeBtn.x += 2*BOX_BORDER_X;
 421     sizeBtn.y += 2*BOX_BORDER_Y;
 422
 423     // account for the area taken by static box
 424     wxRect rect = GetBorderGeometry();
 425     sizeBtn.x += rect.x + rect.width;
 426     sizeBtn.y += rect.y + rect.height;
 427
 428     return sizeBtn;
 429 }
 430
 431 void wxRadioBox::DoMoveWindow(int x0, int y0, int width, int height)
 432 {
 433     wxStaticBox::DoMoveWindow(x0, y0, width, height);
 434
 435     wxSize sizeBtn = GetMaxButtonSize();
 436     wxPoint ptOrigin = GetBoxAreaOrigin();
 437     wxPoint clientOrigin = GetParent() ? GetParent()->GetClientAreaOrigin() : wxPoint(0,0);
 438
 439     x0 += ptOrigin.x + BOX_BORDER_X - clientOrigin.x;
 440     y0 += ptOrigin.y + BOX_BORDER_Y - clientOrigin.y;
 441
 442     int x = x0,
 443         y = y0;
 444
 445     const unsigned int count = GetCount();
 446     for ( unsigned int n = 0; n < count; n++ )
 447     {
 448         m_buttons[n]->SetSize(x, y, sizeBtn.x, sizeBtn.y);
 449
 450         if ( GetWindowStyle() & wxRA_TOPTOBOTTOM )
 451         {
 452             // from top to bottom
 453             if ( (n + 1) % GetRowCount() )
 454             {
 455                 // continue in this column
 456                 y += sizeBtn.y;
 457             }
 458             else
 459             {
 460                 // start a new column
 461                 x += sizeBtn.x;
 462                 y = y0;
 463             }
 464         }
 465         else // wxRA_LEFTTORIGHT: mirror the code above
 466         {
 467             // from left to right
 468             if ( (n + 1) % GetColumnCount() )
 469             {
 470                 // continue in this row
 471                 x += sizeBtn.x;
 472             }
 473             else
 474             {
 475                 // start a new row
 476                 y += sizeBtn.y;
 477                 x = x0;
 478             }
 479         }
 480     }
 481 }
 482
 483 // ----------------------------------------------------------------------------
 484 // keyboard navigation
 485 // ----------------------------------------------------------------------------
 486
 487 bool wxRadioBox::OnKeyDown(wxKeyEvent& event)
 488 {
 489     wxDirection dir;
 490     switch ( event.GetKeyCode() )
 491     {
 492         case WXK_UP:
 493             dir = wxUP;
 494             break;
 495
 496         case WXK_LEFT:
 497             dir = wxLEFT;
 498             break;
 499
 500         case WXK_DOWN:
 501             dir = wxDOWN;
 502             break;
 503
 504         case WXK_RIGHT:
 505             dir = wxRIGHT;
 506             break;
 507
 508         default:
 509             return false;
 510     }
 511
 512     int selOld = GetSelection();
 513     int selNew = GetNextItem(selOld, dir, GetWindowStyle());
 514     if ( selNew != selOld )
 515     {
 516         SetSelection(selNew);
 517
 518         // emulate the button click
 519         SendRadioEvent();
 520     }
 521
 522     return true;
 523 }
 524
 525 #endif // wxUSE_RADIOBOX