src/osx/radiobox_osx.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/radiobox_osx.cpp
   3 // Purpose:     wxRadioBox
   4 // Author:      Stefan Csomor
   5 // Modified by: JS Lair (99/11/15) first implementation
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_RADIOBOX
  15
  16 #include "wx/radiobox.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/radiobut.h"
  20     #include "wx/arrstr.h"
  21 #endif
  22
  23 #include "wx/osx/private.h"
  24
  25 // regarding layout: note that there are differences in inter-control
  26 // spacing between InterfaceBuild and the Human Interface Guidelines, we stick
  27 // to the latter, as those are also used eg in the System Preferences Dialogs
  28
  29 IMPLEMENT_DYNAMIC_CLASS(wxRadioBox, wxControl)
  30
  31
  32 BEGIN_EVENT_TABLE(wxRadioBox, wxControl)
  33     EVT_RADIOBUTTON( wxID_ANY , wxRadioBox::OnRadioButton )
  34 END_EVENT_TABLE()
  35
  36
  37 void wxRadioBox::OnRadioButton( wxCommandEvent &outer )
  38 {
  39     if ( outer.IsChecked() )
  40     {
  41         wxCommandEvent event( wxEVT_RADIOBOX, m_windowId );
  42         int i = GetSelection() ;
  43         event.SetInt(i);
  44         event.SetString(GetString(i));
  45         event.SetEventObject( this );
  46         ProcessCommand(event);
  47     }
  48 }
  49
  50 wxRadioBox::wxRadioBox()
  51 {
  52     m_noItems = 0;
  53     m_noRowsOrCols = 0;
  54     m_radioButtonCycle = NULL;
  55 }
  56
  57 wxRadioBox::~wxRadioBox()
  58 {
  59     SendDestroyEvent();
  60
  61     wxRadioButton *next, *current;
  62
  63     current = m_radioButtonCycle->NextInCycle();
  64     if (current != NULL)
  65     {
  66         while (current != m_radioButtonCycle)
  67         {
  68             next = current->NextInCycle();
  69             delete current;
  70
  71             current = next;
  72         }
  73
  74         delete current;
  75     }
  76 }
  77
  78 // Create the radiobox for two-step construction
  79
  80 bool wxRadioBox::Create( wxWindow *parent,
  81     wxWindowID id, const wxString& label,
  82     const wxPoint& pos, const wxSize& size,
  83     const wxArrayString& choices,
  84     int majorDim, long style,
  85     const wxValidator& val, const wxString& name )
  86 {
  87     wxCArrayString chs(choices);
  88
  89     return Create(
  90         parent, id, label, pos, size, chs.GetCount(),
  91         chs.GetStrings(), majorDim, style, val, name);
  92 }
  93
  94 bool wxRadioBox::Create( wxWindow *parent,
  95     wxWindowID id, const wxString& label,
  96     const wxPoint& pos, const wxSize& size,
  97     int n, const wxString choices[],
  98     int majorDim, long style,
  99     const wxValidator& val, const wxString& name )
 100 {
 101     DontCreatePeer();
 102
 103     if ( !wxControl::Create( parent, id, pos, size, style, val, name ) )
 104         return false;
 105
 106     // during construction we must keep this at 0, otherwise GetBestSize fails
 107     m_noItems = 0;
 108     m_noRowsOrCols = majorDim;
 109     m_radioButtonCycle = NULL;
 110
 111     SetMajorDim( majorDim == 0 ? n : majorDim, style );
 112
 113     m_labelOrig = m_label = label;
 114
 115     SetPeer(wxWidgetImpl::CreateGroupBox( this, parent, id, label, pos, size, style, GetExtraStyle() ));
 116
 117     for (int i = 0; i < n; i++)
 118     {
 119         wxRadioButton *radBtn = new wxRadioButton(
 120             this,
 121             wxID_ANY,
 122             GetLabelText(choices[i]),
 123             wxPoint( 5, 20 * i + 10 ),
 124             wxDefaultSize,
 125             i == 0 ? wxRB_GROUP : 0 );
 126
 127         if ( i == 0 )
 128             m_radioButtonCycle = radBtn;
 129 //        m_radioButtonCycle = radBtn->AddInCycle( m_radioButtonCycle );
 130     }
 131
 132     // as all radiobuttons have been set-up, set the correct dimensions
 133     m_noItems = (unsigned int)n;
 134     SetMajorDim( majorDim == 0 ? n : majorDim, style );
 135
 136     SetSelection( 0 );
 137     InvalidateBestSize();
 138     SetInitialSize( size );
 139     MacPostControlCreate( pos, size );
 140
 141     return true;
 142 }
 143
 144 // Enables or disables the entire radiobox
 145 //
 146 bool wxRadioBox::Enable(bool enable)
 147 {
 148     wxRadioButton *current;
 149
 150     if (!wxControl::Enable( enable ))
 151         return false;
 152
 153     current = m_radioButtonCycle;
 154     for (unsigned int i = 0; i < m_noItems; i++)
 155     {
 156         current->Enable( enable );
 157         current = current->NextInCycle();
 158     }
 159
 160     return true;
 161 }
 162
 163 // Enables or disables an given button
 164 //
 165 bool wxRadioBox::Enable(unsigned int item, bool enable)
 166 {
 167     if (!IsValid( item ))
 168         return false;
 169
 170     unsigned int i = 0;
 171     wxRadioButton *current = m_radioButtonCycle;
 172     while (i != item)
 173     {
 174         i++;
 175         current = current->NextInCycle();
 176     }
 177
 178     return current->Enable( enable );
 179 }
 180
 181 bool wxRadioBox::IsItemEnabled(unsigned int item) const
 182 {
 183     if (!IsValid( item ))
 184         return false;
 185
 186     unsigned int i = 0;
 187     wxRadioButton *current = m_radioButtonCycle;
 188     while (i != item)
 189     {
 190         i++;
 191         current = current->NextInCycle();
 192     }
 193
 194     return current->IsEnabled();
 195 }
 196
 197 // Returns the radiobox label
 198 //
 199 wxString wxRadioBox::GetLabel() const
 200 {
 201     return wxControl::GetLabel();
 202 }
 203
 204 // Returns the label for the given button
 205 //
 206 wxString wxRadioBox::GetString(unsigned int item) const
 207 {
 208     wxRadioButton *current;
 209
 210     if (!IsValid( item ))
 211         return wxEmptyString;
 212
 213     unsigned int i = 0;
 214     current = m_radioButtonCycle;
 215     while (i != item)
 216     {
 217         i++;
 218         current = current->NextInCycle();
 219     }
 220
 221     return current->GetLabel();
 222 }
 223
 224 // Returns the zero-based position of the selected button
 225 //
 226 int wxRadioBox::GetSelection() const
 227 {
 228     int i;
 229     wxRadioButton *current;
 230
 231     i = 0;
 232     current = m_radioButtonCycle;
 233     while (!current->GetValue())
 234     {
 235         i++;
 236         current = current->NextInCycle();
 237     }
 238
 239     return i;
 240 }
 241
 242 // Sets the radiobox label
 243 //
 244 void wxRadioBox::SetLabel(const wxString& label)
 245 {
 246     return wxControl::SetLabel( label );
 247 }
 248
 249 // Sets the label of a given button
 250 //
 251 void wxRadioBox::SetString(unsigned int item,const wxString& label)
 252 {
 253     if (!IsValid( item ))
 254         return;
 255
 256     unsigned int i = 0;
 257     wxRadioButton *current = m_radioButtonCycle;
 258     while (i != item)
 259     {
 260         i++;
 261         current = current->NextInCycle();
 262     }
 263
 264     return current->SetLabel( label );
 265 }
 266
 267 // Sets a button by passing the desired position. This does not cause
 268 // wxEVT_RADIOBOX event to get emitted
 269 //
 270 void wxRadioBox::SetSelection(int item)
 271 {
 272     int i;
 273     wxRadioButton *current;
 274
 275     if (!IsValid( item ))
 276         return;
 277
 278     i = 0;
 279     current = m_radioButtonCycle;
 280     while (i != item)
 281     {
 282         i++;
 283         current = current->NextInCycle();
 284     }
 285
 286     current->SetValue( true );
 287 }
 288
 289 // Shows or hides the entire radiobox
 290 //
 291 bool wxRadioBox::Show(bool show)
 292 {
 293     wxRadioButton *current;
 294
 295     current = m_radioButtonCycle;
 296     for (unsigned int i=0; i<m_noItems; i++)
 297     {
 298         current->Show( show );
 299         current = current->NextInCycle();
 300     }
 301
 302     wxControl::Show( show );
 303
 304     return true;
 305 }
 306
 307 // Shows or hides the given button
 308 //
 309 bool wxRadioBox::Show(unsigned int item, bool show)
 310 {
 311     if (!IsValid( item ))
 312         return false;
 313
 314     unsigned int i = 0;
 315     wxRadioButton *current = m_radioButtonCycle;
 316     while (i != item)
 317     {
 318         i++;
 319         current = current->NextInCycle();
 320     }
 321
 322     return current->Show( show );
 323 }
 324
 325 bool wxRadioBox::IsItemShown(unsigned int item) const
 326 {
 327     if (!IsValid( item ))
 328         return false;
 329
 330     unsigned int i = 0;
 331     wxRadioButton *current = m_radioButtonCycle;
 332     while (i != item)
 333     {
 334         i++;
 335         current = current->NextInCycle();
 336     }
 337
 338     return current->IsShown();
 339 }
 340
 341
 342 // Simulates the effect of the user issuing a command to the item
 343 //
 344 void wxRadioBox::Command( wxCommandEvent& event )
 345 {
 346     SetSelection( event.GetInt() );
 347     ProcessCommand( event );
 348 }
 349
 350 // Sets the selected button to receive keyboard input
 351 //
 352 void wxRadioBox::SetFocus()
 353 {
 354     wxRadioButton *current;
 355
 356     current = m_radioButtonCycle;
 357     while (!current->GetValue())
 358     {
 359         current = current->NextInCycle();
 360     }
 361
 362     current->SetFocus();
 363 }
 364
 365 // Simulates the effect of the user issuing a command to the item
 366 //
 367 #if wxOSX_USE_CARBON
 368     #define RADIO_SIZE 20
 369 #else
 370     // Cocoa has an additional border are of about 3 pixels
 371     #define RADIO_SIZE 23
 372 #endif
 373
 374 void wxRadioBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 375 {
 376     int i;
 377     wxRadioButton *current;
 378
 379     // define the position
 380
 381     int x_current, y_current;
 382     int x_offset, y_offset;
 383     int widthOld, heightOld;
 384
 385     GetSize( &widthOld, &heightOld );
 386     GetPosition( &x_current, &y_current );
 387
 388     x_offset = x;
 389     y_offset = y;
 390     if (!(sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 391     {
 392         if (x == wxDefaultCoord)
 393             x_offset = x_current;
 394         if (y == wxDefaultCoord)
 395             y_offset = y_current;
 396     }
 397
 398     // define size
 399     int charWidth, charHeight;
 400     int maxWidth, maxHeight;
 401     int eachWidth[128], eachHeight[128];
 402     int totWidth, totHeight;
 403
 404     GetTextExtent(
 405         wxT("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"),
 406         &charWidth, &charHeight );
 407
 408     charWidth /= 52;
 409
 410     maxWidth = -1;
 411     maxHeight = -1;
 412     wxSize bestSizeRadio ;
 413     if ( m_radioButtonCycle )
 414         bestSizeRadio = m_radioButtonCycle->GetBestSize();
 415
 416     for (unsigned int i = 0 ; i < m_noItems; i++)
 417     {
 418         GetTextExtent(GetString(i), &eachWidth[i], &eachHeight[i] );
 419         eachWidth[i] = eachWidth[i] + RADIO_SIZE;
 420         eachHeight[i] = wxMax( eachHeight[i], bestSizeRadio.y );
 421
 422         if (maxWidth < eachWidth[i])
 423             maxWidth = eachWidth[i];
 424         if (maxHeight < eachHeight[i])
 425             maxHeight = eachHeight[i];
 426     }
 427
 428     // according to HIG (official space - 3 Pixels Diff between Frame and Layout size)
 429     int space = 3;
 430     if ( GetWindowVariant() == wxWINDOW_VARIANT_MINI )
 431         space = 2;
 432
 433     totHeight = GetRowCount() * maxHeight + (GetRowCount() - 1) * space;
 434     totWidth  = GetColumnCount() * (maxWidth + charWidth);
 435
 436     wxSize sz = DoGetSizeFromClientSize( wxSize( totWidth, totHeight ) ) ;
 437
 438     // change the width / height only when specified
 439     if ( width == wxDefaultCoord )
 440     {
 441         if ( sizeFlags & wxSIZE_AUTO_WIDTH )
 442             width = sz.x;
 443         else
 444             width = widthOld;
 445     }
 446
 447     if ( height == wxDefaultCoord )
 448     {
 449         if ( sizeFlags & wxSIZE_AUTO_HEIGHT )
 450             height = sz.y;
 451         else
 452             height = heightOld;
 453     }
 454
 455     wxControl::DoSetSize( x_offset, y_offset, width, height, wxSIZE_AUTO );
 456
 457     // arrange radio buttons
 458     int x_start, y_start;
 459
 460     x_start = ( width - sz.x ) / 2;
 461     y_start = ( height - sz.y ) / 2;
 462
 463     x_offset = x_start;
 464     y_offset = y_start;
 465
 466     current = m_radioButtonCycle;
 467     for (i = 0 ; i < (int)m_noItems; i++)
 468     {
 469         // not to do for the zero button!
 470         if ((i > 0) && ((i % GetMajorDim()) == 0))
 471         {
 472             if (m_windowStyle & wxRA_SPECIFY_ROWS)
 473             {
 474                 x_offset += maxWidth + charWidth;
 475                 y_offset = y_start;
 476             }
 477             else
 478             {
 479                 x_offset = x_start;
 480                 y_offset += maxHeight + space;
 481             }
 482         }
 483
 484         current->SetSize( x_offset, y_offset, eachWidth[i], eachHeight[i] );
 485         current = current->NextInCycle();
 486
 487         if (m_windowStyle & wxRA_SPECIFY_ROWS)
 488             y_offset += maxHeight + space;
 489         else
 490             x_offset += maxWidth + charWidth;
 491     }
 492 }
 493
 494 wxSize wxRadioBox::DoGetBestSize() const
 495 {
 496     int charWidth, charHeight;
 497     int maxWidth, maxHeight;
 498     int eachWidth, eachHeight;
 499     int totWidth, totHeight;
 500
 501     wxFont font = GetFont(); // GetParent()->GetFont()
 502     GetTextExtent(
 503         wxT("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"),
 504         &charWidth, &charHeight, NULL, NULL, &font );
 505
 506     charWidth /= 52;
 507
 508     maxWidth = -1;
 509     maxHeight = -1;
 510
 511     wxSize bestSizeRadio ;
 512     if ( m_radioButtonCycle )
 513         bestSizeRadio = m_radioButtonCycle->GetBestSize();
 514
 515     for (unsigned int i = 0 ; i < m_noItems; i++)
 516     {
 517         GetTextExtent(GetString(i), &eachWidth, &eachHeight, NULL, NULL, &font );
 518         eachWidth  = (eachWidth + RADIO_SIZE);
 519         eachHeight = wxMax(eachHeight, bestSizeRadio.y );
 520         if (maxWidth < eachWidth)
 521             maxWidth = eachWidth;
 522         if (maxHeight < eachHeight)
 523             maxHeight = eachHeight;
 524     }
 525
 526     // according to HIG (official space - 3 Pixels Diff between Frame and Layout size)
 527     int space = 3;
 528     if ( GetWindowVariant() == wxWINDOW_VARIANT_MINI )
 529         space = 2;
 530
 531     totHeight = GetRowCount() * maxHeight + (GetRowCount() - 1) * space;
 532     totWidth  = GetColumnCount() * (maxWidth + charWidth);
 533
 534     wxSize sz = DoGetSizeFromClientSize( wxSize( totWidth, totHeight ) );
 535     totWidth = sz.x;
 536     totHeight = sz.y;
 537
 538     // optimum size is an additional 5 pt border to all sides
 539     totWidth += 10;
 540     totHeight += 10;
 541
 542     // handle radio box title as well
 543     GetTextExtent( GetLabel(), &eachWidth, NULL );
 544     eachWidth  = (int)(eachWidth + RADIO_SIZE) +  3 * charWidth;
 545     if (totWidth < eachWidth)
 546         totWidth = eachWidth;
 547
 548     return wxSize( totWidth, totHeight );
 549 }
 550
 551 bool wxRadioBox::SetFont(const wxFont& font)
 552 {
 553     bool retval = wxWindowBase::SetFont( font );
 554
 555     // dont' update the native control, it has its own small font
 556
 557     // should we iterate over the children ?
 558
 559     return retval;
 560 }
 561
 562 #endif // wxUSE_RADIOBOX