src/osx/spinctrl_osx.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/spinbutt.cpp
   3 // Purpose:     wxSpinCtrl
   4 // Author:      Robert
   5 // Modified by: Mark Newsam (Based on GTK file)
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) Robert Roebling
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_SPINCTRL
  14
  15 #include "wx/spinctrl.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/textctrl.h"
  19     #include "wx/containr.h"
  20 #endif
  21
  22 #include "wx/spinbutt.h"
  23
  24 // ----------------------------------------------------------------------------
  25 // constants
  26 // ----------------------------------------------------------------------------
  27
  28 // the focus rect around a text may have 4 pixels in each direction
  29 // we handle these problems right now in an extended vis region of a window
  30 static const wxCoord TEXTBORDER = 4 ;
  31 // the margin between the text control and the spin
  32 // HIG says 2px between text and stepper control,
  33 // but a value of 3 leads to the same look as the
  34 // spin controls in Apple's apps
  35 static const wxCoord MARGIN = 3;
  36
  37 // ----------------------------------------------------------------------------
  38 // wxSpinCtrlText: text control used by spin control
  39 // ----------------------------------------------------------------------------
  40
  41 class wxSpinCtrlText : public wxTextCtrl
  42 {
  43 public:
  44     wxSpinCtrlText(wxSpinCtrl *spin, const wxString& value, int style)
  45         : wxTextCtrl(spin , wxID_ANY, value, wxDefaultPosition, wxSize(40, wxDefaultCoord), style )
  46     {
  47         m_spin = spin;
  48
  49         // remove the default minsize, the spinctrl will have one instead
  50         SetMinSize(wxDefaultSize);
  51     }
  52
  53     bool ProcessEvent(wxEvent &event)
  54     {
  55         // Hand button down events to wxSpinCtrl. Doesn't work.
  56         if (event.GetEventType() == wxEVT_LEFT_DOWN && m_spin->ProcessEvent( event ))
  57             return true;
  58
  59         return wxTextCtrl::ProcessEvent( event );
  60     }
  61
  62 protected:
  63      void OnSetFocus(wxFocusEvent& event)
  64      {
  65          // delegate to parent control
  66          event.SetEventObject( GetParent() );
  67          GetParent()->HandleWindowEvent(event);
  68      }
  69
  70      void OnKillFocus(wxFocusEvent& event)
  71      {
  72          long l;
  73          if ( !GetValue().ToLong(&l) )
  74          {
  75              // not a number at all
  76              return;
  77          }
  78
  79          // is within range
  80          if (l < m_spin->GetMin())
  81              l = m_spin->GetMin();
  82          if (l > m_spin->GetMax())
  83              l = m_spin->GetMax();
  84
  85          // Update text control
  86          wxString str;
  87          str.Printf( wxT("%d"), (int)l );
  88          if (str != GetValue())
  89              SetValue( str );
  90
  91          if (l != m_spin->m_oldValue)
  92          {
  93              // set value in spin button
  94              // does that trigger an event?
  95              m_spin->m_btn->SetValue( l );
  96
  97              // if not
  98              wxCommandEvent cevent(wxEVT_COMMAND_SPINCTRL_UPDATED, m_spin->GetId());
  99              cevent.SetEventObject(m_spin);
 100              cevent.SetInt(l);
 101              m_spin->HandleWindowEvent(cevent);
 102
 103              m_spin->m_oldValue = l;
 104          }
 105
 106          // delegate to parent control
 107          event.SetEventObject( GetParent() );
 108          GetParent()->HandleWindowEvent(event);
 109     }
 110
 111     void OnTextChange(wxCommandEvent& event)
 112     {
 113         int val;
 114         if ( m_spin->GetTextValue(&val) )
 115         {
 116             m_spin->GetSpinButton()->SetValue(val);
 117
 118             // If we're already processing a text update from m_spin,
 119             // don't send it again, since we could end up recursing
 120             // infinitely.
 121             if (event.GetId() == m_spin->GetId())
 122             {
 123                 event.Skip();
 124                 return;
 125             }
 126
 127             // Send event that the text was manually changed
 128             wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_spin->GetId());
 129             event.SetEventObject(m_spin);
 130             event.SetString(m_spin->GetText()->GetValue());
 131             event.SetInt(val);
 132
 133             m_spin->HandleWindowEvent(event);
 134         }
 135
 136         event.Skip();
 137     }
 138
 139 private:
 140     wxSpinCtrl *m_spin;
 141
 142     DECLARE_EVENT_TABLE()
 143 };
 144
 145 BEGIN_EVENT_TABLE(wxSpinCtrlText, wxTextCtrl)
 146     EVT_TEXT(wxID_ANY, wxSpinCtrlText::OnTextChange)
 147     EVT_SET_FOCUS(wxSpinCtrlText::OnSetFocus)
 148     EVT_KILL_FOCUS(wxSpinCtrlText::OnKillFocus)
 149 END_EVENT_TABLE()
 150
 151 // ----------------------------------------------------------------------------
 152 // wxSpinCtrlButton: spin button used by spin control
 153 // ----------------------------------------------------------------------------
 154
 155 class wxSpinCtrlButton : public wxSpinButton
 156 {
 157 public:
 158     wxSpinCtrlButton(wxSpinCtrl *spin, int style)
 159         : wxSpinButton(spin )
 160     {
 161         m_spin = spin;
 162         SetWindowStyle(style | wxSP_VERTICAL);
 163
 164         // TODO: The spin button gets truncated a little bit due to size
 165         // differences so change it's default size a bit.  SMALL still gets a
 166         // bit truncated, but MINI seems to be too small...  Readdress this
 167         // when the textctrl issues are all sorted out.
 168         //SetWindowVariant(wxWINDOW_VARIANT_SMALL);
 169
 170         // remove the default minsize, the spinctrl will have one instead
 171         SetMinSize(wxDefaultSize);
 172     }
 173
 174 protected:
 175     void OnSpinButton(wxSpinEvent& eventSpin)
 176     {
 177         int pos = eventSpin.GetPosition();
 178         m_spin->SetTextValue(pos);
 179
 180         wxCommandEvent event(wxEVT_COMMAND_SPINCTRL_UPDATED, m_spin->GetId());
 181         event.SetEventObject(m_spin);
 182         event.SetInt(pos);
 183
 184         m_spin->HandleWindowEvent(event);
 185
 186         m_spin->m_oldValue = pos;
 187     }
 188
 189 private:
 190     wxSpinCtrl *m_spin;
 191
 192     DECLARE_EVENT_TABLE()
 193 };
 194
 195 BEGIN_EVENT_TABLE(wxSpinCtrlButton, wxSpinButton)
 196     EVT_SPIN(wxID_ANY, wxSpinCtrlButton::OnSpinButton)
 197 END_EVENT_TABLE()
 198
 199 BEGIN_EVENT_TABLE(wxSpinCtrl, wxControl)
 200     WX_EVENT_TABLE_CONTROL_CONTAINER(wxSpinCtrl)
 201 END_EVENT_TABLE()
 202
 203 WX_DELEGATE_TO_CONTROL_CONTAINER(wxSpinCtrl, wxControl)
 204
 205
 206 // ============================================================================
 207 // implementation
 208 // ============================================================================
 209
 210 // ----------------------------------------------------------------------------
 211 // wxSpinCtrl creation
 212 // ----------------------------------------------------------------------------
 213
 214 void wxSpinCtrl::Init()
 215 {
 216     m_text = NULL;
 217     m_btn = NULL;
 218     WX_INIT_CONTROL_CONTAINER();
 219 }
 220
 221 bool wxSpinCtrl::Create(wxWindow *parent,
 222                         wxWindowID id,
 223                         const wxString& value,
 224                         const wxPoint& pos,
 225                         const wxSize& size,
 226                         long style,
 227                         int min,
 228                         int max,
 229                         int initial,
 230                         const wxString& name)
 231 {
 232     DontCreatePeer();
 233
 234     if ( !wxControl::Create(parent, id, pos, size, style,
 235                             wxDefaultValidator, name) )
 236     {
 237         return false;
 238     }
 239
 240     // the string value overrides the numeric one (for backwards compatibility
 241     // reasons and also because it is simpler to satisfy the string value which
 242     // comes much sooner in the list of arguments and leave the initial
 243     // parameter unspecified)
 244     if ( !value.empty() )
 245     {
 246         long l;
 247         if ( value.ToLong(&l) )
 248             initial = l;
 249     }
 250
 251     wxSize csize = size ;
 252     m_text = new wxSpinCtrlText(this, value, style & ( wxTE_PROCESS_ENTER | wxALIGN_MASK ) );
 253     m_btn = new wxSpinCtrlButton(this, style);
 254
 255     m_btn->SetRange(min, max);
 256     m_btn->SetValue(initial);
 257     // make it different
 258     m_oldValue = GetMin()-1;
 259
 260     if ( size.x == wxDefaultCoord ){
 261         csize.x = m_text->GetSize().x + MARGIN + m_btn->GetSize().x ;
 262     }
 263
 264     if ( size.y == wxDefaultCoord ) {
 265         csize.y = m_text->GetSize().y + 2 * TEXTBORDER ; //allow for text border highlights
 266         if ( m_btn->GetSize().y > csize.y )
 267             csize.y = m_btn->GetSize().y ;
 268     }
 269
 270     //SetSize(csize);
 271
 272     //MacPostControlCreate(pos, csize);
 273     SetInitialSize(csize);
 274
 275     return true;
 276 }
 277
 278 wxSpinCtrl::~wxSpinCtrl()
 279 {
 280     // delete the controls now, don't leave them alive even though they would
 281     // still be eventually deleted by our parent - but it will be too late, the
 282     // user code expects them to be gone now
 283     wxDELETE(m_text);
 284     wxDELETE(m_btn);
 285 }
 286
 287 // ----------------------------------------------------------------------------
 288 // geometry
 289 // ----------------------------------------------------------------------------
 290
 291 wxSize wxSpinCtrl::DoGetBestSize() const
 292 {
 293     if (!m_btn || !m_text)
 294         return GetSize();
 295
 296     wxSize sizeBtn = m_btn->GetBestSize(),
 297            sizeText = m_text->GetBestSize();
 298
 299     sizeText.y += 2 * TEXTBORDER ;
 300     sizeText.x += 2 * TEXTBORDER ;
 301
 302     int height;
 303     if (sizeText.y > sizeBtn.y)
 304         height = sizeText.y;
 305     else
 306         height = sizeBtn.y;
 307
 308     return wxSize(sizeBtn.x + sizeText.x + MARGIN, height );
 309 }
 310
 311 void wxSpinCtrl::DoMoveWindow(int x, int y, int width, int height)
 312 {
 313     // position the subcontrols inside the client area
 314     wxSize sizeBtn = m_btn->GetSize();
 315     wxSize sizeText = m_text->GetSize();
 316
 317     wxControl::DoMoveWindow(x, y, width, height);
 318
 319     wxCoord wText = width - sizeBtn.x - MARGIN - 2 * TEXTBORDER;
 320
 321     m_text->SetSize(TEXTBORDER, (height - sizeText.y) / 2, wText, -1);
 322     m_btn->SetSize(0 + wText + MARGIN + TEXTBORDER , (height - sizeBtn.y) / 2 , -1, -1 );
 323 }
 324
 325 // ----------------------------------------------------------------------------
 326 // operations forwarded to the subcontrols
 327 // ----------------------------------------------------------------------------
 328
 329 bool wxSpinCtrl::Enable(bool enable)
 330 {
 331     if ( !wxControl::Enable(enable) )
 332         return false;
 333     return true;
 334 }
 335
 336 bool wxSpinCtrl::Show(bool show)
 337 {
 338     if ( !wxControl::Show(show) )
 339         return false;
 340     return true;
 341 }
 342
 343 // ----------------------------------------------------------------------------
 344 // value and range access
 345 // ----------------------------------------------------------------------------
 346
 347 bool wxSpinCtrl::GetTextValue(int *val) const
 348 {
 349     long l;
 350     if ( !m_text->GetValue().ToLong(&l) )
 351     {
 352         // not a number at all
 353         return false;
 354     }
 355
 356     if ( l < GetMin() || l > GetMax() )
 357     {
 358         // out of range
 359         return false;
 360     }
 361
 362     *val = l;
 363
 364     return true;
 365 }
 366
 367 int wxSpinCtrl::GetValue() const
 368 {
 369     return m_btn ? m_btn->GetValue() : 0;
 370 }
 371
 372 int wxSpinCtrl::GetMin() const
 373 {
 374     return m_btn ? m_btn->GetMin() : 0;
 375 }
 376
 377 int wxSpinCtrl::GetMax() const
 378 {
 379     return m_btn ? m_btn->GetMax() : 0;
 380 }
 381
 382 // ----------------------------------------------------------------------------
 383 // changing value and range
 384 // ----------------------------------------------------------------------------
 385
 386 void wxSpinCtrl::SetTextValue(int val)
 387 {
 388     wxCHECK_RET( m_text, wxT("invalid call to wxSpinCtrl::SetTextValue") );
 389
 390     m_text->SetValue(wxString::Format(wxT("%d"), val));
 391
 392     // select all text
 393     m_text->SetSelection(0, -1);
 394
 395     m_text->SetInsertionPointEnd();
 396
 397     // and give focus to the control!
 398     // m_text->SetFocus();    Why???? TODO.
 399 }
 400
 401 void wxSpinCtrl::SetValue(int val)
 402 {
 403     wxCHECK_RET( m_btn, wxT("invalid call to wxSpinCtrl::SetValue") );
 404
 405     SetTextValue(val);
 406
 407     m_btn->SetValue(val);
 408     m_oldValue = val;
 409 }
 410
 411 void wxSpinCtrl::SetValue(const wxString& text)
 412 {
 413     wxCHECK_RET( m_text, wxT("invalid call to wxSpinCtrl::SetValue") );
 414
 415     long val;
 416     if ( text.ToLong(&val) && ((val > INT_MIN) && (val < INT_MAX)) )
 417     {
 418         SetValue((int)val);
 419     }
 420     else // not a number at all or out of range
 421     {
 422         m_text->SetValue(text);
 423         m_text->SetSelection(0, -1);
 424     }
 425 }
 426
 427 void wxSpinCtrl::SetRange(int min, int max)
 428 {
 429     wxCHECK_RET( m_btn, wxT("invalid call to wxSpinCtrl::SetRange") );
 430
 431     m_btn->SetRange(min, max);
 432 }
 433
 434 void wxSpinCtrl::SetSelection(long from, long to)
 435 {
 436     // if from and to are both -1, it means (in wxWidgets) that all text should
 437     // be selected
 438     if ( (from == -1) && (to == -1) )
 439     {
 440         from = 0;
 441     }
 442     m_text->SetSelection(from, to);
 443 }
 444
 445 #endif // wxUSE_SPINCTRL