src/generic/spinctlg.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/spinctlg.cpp
   3 // Purpose:     implements wxSpinCtrl as a composite control
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     29.01.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // License:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 // There are port-specific versions for MSW, GTK, OS/2 and Mac, so exclude the
  28 // contents of this file in those cases
  29 #if !(defined(__WXMSW__) || defined(__WXGTK__) || defined(__WXPM__) || \
  30     defined(__WXMAC__)) || defined(__WXUNIVERSAL__)
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/textctrl.h"
  34 #endif //WX_PRECOMP
  35
  36 #if wxUSE_SPINCTRL
  37
  38 #include "wx/spinbutt.h"
  39 #include "wx/spinctrl.h"
  40
  41 // ----------------------------------------------------------------------------
  42 // constants
  43 // ----------------------------------------------------------------------------
  44
  45 // the margin between the text control and the spin
  46 static const wxCoord MARGIN = 2;
  47
  48 // ----------------------------------------------------------------------------
  49 // wxSpinCtrlText: text control used by spin control
  50 // ----------------------------------------------------------------------------
  51
  52 class wxSpinCtrlText : public wxTextCtrl
  53 {
  54 public:
  55     wxSpinCtrlText(wxSpinCtrl *spin, const wxString& value)
  56         : wxTextCtrl(spin->GetParent(), wxID_ANY, value)
  57     {
  58         m_spin = spin;
  59
  60         // remove the default minsize, the spinctrl will have one instead
  61         SetSizeHints(wxDefaultCoord,wxDefaultCoord);
  62     }
  63
  64 protected:
  65     void OnTextChange(wxCommandEvent& event)
  66     {
  67         int val;
  68         if ( m_spin->GetTextValue(&val) )
  69         {
  70             m_spin->GetSpinButton()->SetValue(val);
  71         }
  72
  73         event.Skip();
  74     }
  75
  76     bool ProcessEvent(wxEvent &event)
  77     {
  78         // Hand button down events to wxSpinCtrl. Doesn't work.
  79         if (event.GetEventType() == wxEVT_LEFT_DOWN && m_spin->ProcessEvent( event ))
  80             return true;
  81
  82         return wxTextCtrl::ProcessEvent( event );
  83     }
  84
  85 private:
  86     wxSpinCtrl *m_spin;
  87
  88     DECLARE_EVENT_TABLE()
  89 };
  90
  91 BEGIN_EVENT_TABLE(wxSpinCtrlText, wxTextCtrl)
  92     EVT_TEXT(wxID_ANY, wxSpinCtrlText::OnTextChange)
  93 END_EVENT_TABLE()
  94
  95 // ----------------------------------------------------------------------------
  96 // wxSpinCtrlButton: spin button used by spin control
  97 // ----------------------------------------------------------------------------
  98
  99 class wxSpinCtrlButton : public wxSpinButton
 100 {
 101 public:
 102     wxSpinCtrlButton(wxSpinCtrl *spin, int style)
 103         : wxSpinButton(spin->GetParent())
 104     {
 105         m_spin = spin;
 106
 107         SetWindowStyle(style | wxSP_VERTICAL);
 108
 109         // remove the default minsize, the spinctrl will have one instead
 110         SetSizeHints(wxDefaultCoord,wxDefaultCoord);
 111     }
 112
 113 protected:
 114     void OnSpinButton(wxSpinEvent& eventSpin)
 115     {
 116         m_spin->SetTextValue(eventSpin.GetPosition());
 117
 118         wxCommandEvent event(wxEVT_COMMAND_SPINCTRL_UPDATED, m_spin->GetId());
 119         event.SetEventObject(m_spin);
 120         event.SetInt(eventSpin.GetPosition());
 121
 122         m_spin->GetEventHandler()->ProcessEvent(event);
 123
 124         eventSpin.Skip();
 125     }
 126
 127 private:
 128     wxSpinCtrl *m_spin;
 129
 130     DECLARE_EVENT_TABLE()
 131 };
 132
 133 BEGIN_EVENT_TABLE(wxSpinCtrlButton, wxSpinButton)
 134     EVT_SPIN(wxID_ANY, wxSpinCtrlButton::OnSpinButton)
 135 END_EVENT_TABLE()
 136
 137 IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl, wxControl)
 138
 139 // ============================================================================
 140 // implementation
 141 // ============================================================================
 142
 143 // ----------------------------------------------------------------------------
 144 // wxSpinCtrl creation
 145 // ----------------------------------------------------------------------------
 146
 147 void wxSpinCtrl::Init()
 148 {
 149     m_text = NULL;
 150     m_btn = NULL;
 151 }
 152
 153 bool wxSpinCtrl::Create(wxWindow *parent,
 154                         wxWindowID id,
 155                         const wxString& value,
 156                         const wxPoint& pos,
 157                         const wxSize& size,
 158                         long style,
 159                         int min,
 160                         int max,
 161                         int initial,
 162                         const wxString& name)
 163 {
 164     if ( !wxControl::Create(parent, id, wxDefaultPosition, wxDefaultSize, style,
 165                             wxDefaultValidator, name) )
 166     {
 167         return false;
 168     }
 169
 170     // the string value overrides the numeric one (for backwards compatibility
 171     // reasons and also because it is simpler to satisfy the string value which
 172     // comes much sooner in the list of arguments and leave the initial
 173     // parameter unspecified)
 174     if ( !value.empty() )
 175     {
 176         long l;
 177         if ( value.ToLong(&l) )
 178             initial = l;
 179     }
 180
 181     m_text = new wxSpinCtrlText(this, value);
 182     m_btn = new wxSpinCtrlButton(this, style);
 183
 184     m_btn->SetRange(min, max);
 185     m_btn->SetValue(initial);
 186     SetInitialSize(size);
 187     Move(pos);
 188
 189     // have to disable this window to avoid interfering it with message
 190     // processing to the text and the button... but pretend it is enabled to
 191     // make IsEnabled() return true
 192     wxControl::Enable(false); // don't use non virtual Disable() here!
 193     m_isEnabled = true;
 194
 195     // we don't even need to show this window itself - and not doing it avoids
 196     // that it overwrites the text control
 197     wxControl::Show(false);
 198     m_isShown = true;
 199     return true;
 200 }
 201
 202 wxSpinCtrl::~wxSpinCtrl()
 203 {
 204     // delete the controls now, don't leave them alive even though they would
 205     // still be eventually deleted by our parent - but it will be too late, the
 206     // user code expects them to be gone now
 207     delete m_text;
 208     m_text = NULL ;
 209     delete m_btn;
 210     m_btn = NULL ;
 211 }
 212
 213 // ----------------------------------------------------------------------------
 214 // geometry
 215 // ----------------------------------------------------------------------------
 216
 217 wxSize wxSpinCtrl::DoGetBestSize() const
 218 {
 219     wxSize sizeBtn = m_btn->GetBestSize(),
 220            sizeText = m_text->GetBestSize();
 221
 222     return wxSize(sizeBtn.x + sizeText.x + MARGIN, sizeText.y);
 223 }
 224
 225 void wxSpinCtrl::DoMoveWindow(int x, int y, int width, int height)
 226 {
 227     wxControl::DoMoveWindow(x, y, width, height);
 228
 229     // position the subcontrols inside the client area
 230     wxSize sizeBtn = m_btn->GetSize();
 231
 232     wxCoord wText = width - sizeBtn.x;
 233     m_text->SetSize(x, y, wText, height);
 234     m_btn->SetSize(x + wText + MARGIN, y, wxDefaultCoord, height);
 235 }
 236
 237 // ----------------------------------------------------------------------------
 238 // operations forwarded to the subcontrols
 239 // ----------------------------------------------------------------------------
 240
 241 bool wxSpinCtrl::Enable(bool enable)
 242 {
 243     if ( !wxControl::Enable(enable) )
 244         return false;
 245
 246     m_btn->Enable(enable);
 247     m_text->Enable(enable);
 248
 249     return true;
 250 }
 251
 252 bool wxSpinCtrl::Show(bool show)
 253 {
 254     if ( !wxControl::Show(show) )
 255         return false;
 256
 257     // under GTK Show() is called the first time before we are fully
 258     // constructed
 259     if ( m_btn )
 260     {
 261         m_btn->Show(show);
 262         m_text->Show(show);
 263     }
 264
 265     return true;
 266 }
 267
 268 // ----------------------------------------------------------------------------
 269 // value and range access
 270 // ----------------------------------------------------------------------------
 271
 272 bool wxSpinCtrl::GetTextValue(int *val) const
 273 {
 274     long l;
 275     if ( !m_text->GetValue().ToLong(&l) )
 276     {
 277         // not a number at all
 278         return false;
 279     }
 280
 281     if ( l < GetMin() || l > GetMax() )
 282     {
 283         // out of range
 284         return false;
 285     }
 286
 287     *val = l;
 288
 289     return true;
 290 }
 291
 292 int wxSpinCtrl::GetValue() const
 293 {
 294     return m_btn ? m_btn->GetValue() : 0;
 295 }
 296
 297 int wxSpinCtrl::GetMin() const
 298 {
 299     return m_btn ? m_btn->GetMin() : 0;
 300 }
 301
 302 int wxSpinCtrl::GetMax() const
 303 {
 304     return m_btn ? m_btn->GetMax() : 0;
 305 }
 306
 307 // ----------------------------------------------------------------------------
 308 // changing value and range
 309 // ----------------------------------------------------------------------------
 310
 311 void wxSpinCtrl::SetTextValue(int val)
 312 {
 313     wxCHECK_RET( m_text, _T("invalid call to wxSpinCtrl::SetTextValue") );
 314
 315     m_text->SetValue(wxString::Format(_T("%d"), val));
 316
 317     // select all text
 318     m_text->SetSelection(0, -1);
 319
 320     // and give focus to the control!
 321     // m_text->SetFocus();    Why???? TODO.
 322 }
 323
 324 void wxSpinCtrl::SetValue(int val)
 325 {
 326     wxCHECK_RET( m_btn, _T("invalid call to wxSpinCtrl::SetValue") );
 327
 328     SetTextValue(val);
 329
 330     m_btn->SetValue(val);
 331 }
 332
 333 void wxSpinCtrl::SetValue(const wxString& text)
 334 {
 335     wxCHECK_RET( m_text, _T("invalid call to wxSpinCtrl::SetValue") );
 336
 337     long val;
 338     if ( text.ToLong(&val) && ((val > INT_MIN) && (val < INT_MAX)) )
 339     {
 340         SetValue((int)val);
 341     }
 342     else // not a number at all or out of range
 343     {
 344         m_text->SetValue(text);
 345         m_text->SetSelection(0, -1);
 346     }
 347 }
 348
 349 void wxSpinCtrl::SetRange(int min, int max)
 350 {
 351     wxCHECK_RET( m_btn, _T("invalid call to wxSpinCtrl::SetRange") );
 352
 353     m_btn->SetRange(min, max);
 354 }
 355
 356 void wxSpinCtrl::SetSelection(long from, long to)
 357 {
 358     wxCHECK_RET( m_text, _T("invalid call to wxSpinCtrl::SetSelection") );
 359
 360     m_text->SetSelection(from, to);
 361 }
 362
 363 #endif // wxUSE_SPINCTRL
 364 #endif // !wxPort-with-native-spinctrl