src/gtk/spinctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/spinbutt.cpp
   3 // Purpose:     wxSpinCtrl
   4 // Author:      Robert
   5 // Modified by:
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) Robert Roebling
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_SPINCTRL
  15
  16 #include "wx/spinctrl.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/textctrl.h"    // for wxEVT_COMMAND_TEXT_UPDATED
  20     #include "wx/utils.h"
  21 #endif
  22
  23 #include "wx/gtk/private.h"
  24
  25 //-----------------------------------------------------------------------------
  26 // data
  27 //-----------------------------------------------------------------------------
  28
  29 extern bool   g_blockEventsOnDrag;
  30
  31 //-----------------------------------------------------------------------------
  32 // "value_changed"
  33 //-----------------------------------------------------------------------------
  34
  35 extern "C" {
  36 static void
  37 gtk_value_changed(GtkSpinButton* spinbutton, wxSpinCtrl* win)
  38 {
  39     win->m_pos = int(gtk_spin_button_get_value(spinbutton));
  40     if (!win->m_hasVMT || g_blockEventsOnDrag || win->m_blockScrollEvent)
  41         return;
  42
  43     wxCommandEvent event( wxEVT_COMMAND_SPINCTRL_UPDATED, win->GetId());
  44     event.SetEventObject( win );
  45
  46     // note that we don't use wxSpinCtrl::GetValue() here because it would
  47     // adjust the value to fit into the control range and this means that we
  48     // would never be able to enter an "invalid" value in the control, even
  49     // temporarily - and trying to enter 10 into the control which accepts the
  50     // values in range 5..50 is then, ummm, quite challenging (hint: you can't
  51     // enter 1!) (VZ)
  52     event.SetInt(win->m_pos);
  53     win->GetEventHandler()->ProcessEvent( event );
  54 }
  55 }
  56
  57 //-----------------------------------------------------------------------------
  58 //  "changed"
  59 //-----------------------------------------------------------------------------
  60
  61 extern "C" {
  62 static void
  63 gtk_changed(GtkSpinButton* spinbutton, wxSpinCtrl* win)
  64 {
  65     if (!win->m_hasVMT || win->m_blockScrollEvent)
  66         return;
  67
  68     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
  69     event.SetEventObject( win );
  70     event.SetString( GTK_ENTRY(spinbutton)->text );
  71
  72     // see above
  73     event.SetInt(win->m_pos);
  74     win->GetEventHandler()->ProcessEvent( event );
  75 }
  76 }
  77
  78 //-----------------------------------------------------------------------------
  79 // wxSpinCtrl
  80 //-----------------------------------------------------------------------------
  81
  82 IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl,wxControl)
  83
  84 BEGIN_EVENT_TABLE(wxSpinCtrl, wxControl)
  85     EVT_CHAR(wxSpinCtrl::OnChar)
  86 END_EVENT_TABLE()
  87
  88 wxSpinCtrl::wxSpinCtrl()
  89 {
  90     m_pos = 0;
  91 }
  92
  93 bool wxSpinCtrl::Create(wxWindow *parent, wxWindowID id,
  94                         const wxString& value,
  95                         const wxPoint& pos,  const wxSize& size,
  96                         long style,
  97                         int min, int max, int initial,
  98                         const wxString& name)
  99 {
 100     m_needParent = true;
 101
 102     if (!PreCreation( parent, pos, size ) ||
 103         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 104     {
 105         wxFAIL_MSG( wxT("wxSpinCtrl creation failed") );
 106         return false;
 107     }
 108
 109     m_widget = gtk_spin_button_new_with_range(min, max, 1);
 110     gtk_spin_button_set_value((GtkSpinButton*)m_widget, initial);
 111     m_pos = int(gtk_spin_button_get_value((GtkSpinButton*)m_widget));
 112
 113     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget),
 114                               (int)(m_windowStyle & wxSP_WRAP) );
 115
 116     g_signal_connect(m_widget, "value_changed", G_CALLBACK(gtk_value_changed), this);
 117     g_signal_connect(m_widget, "changed", G_CALLBACK(gtk_changed), this);
 118
 119     m_parent->DoAddChild( this );
 120
 121     PostCreation(size);
 122
 123     if (!value.empty())
 124     {
 125         SetValue(value);
 126     }
 127
 128     return true;
 129 }
 130
 131 int wxSpinCtrl::GetMin() const
 132 {
 133     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 134
 135     double min;
 136     gtk_spin_button_get_range((GtkSpinButton*)m_widget, &min, NULL);
 137     return int(min);
 138 }
 139
 140 int wxSpinCtrl::GetMax() const
 141 {
 142     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 143
 144     double max;
 145     gtk_spin_button_get_range((GtkSpinButton*)m_widget, NULL, &max);
 146     return int(max);
 147 }
 148
 149 int wxSpinCtrl::GetValue() const
 150 {
 151     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 152
 153     wx_const_cast(wxSpinCtrl*, this)->BlockScrollEvent();
 154     gtk_spin_button_update( GTK_SPIN_BUTTON(m_widget) );
 155     wx_const_cast(wxSpinCtrl*, this)->UnblockScrollEvent();
 156
 157     return m_pos;
 158 }
 159
 160 void wxSpinCtrl::SetValue( const wxString& value )
 161 {
 162     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 163
 164     int n;
 165     if ( (wxSscanf(value, wxT("%d"), &n) == 1) )
 166     {
 167         // a number - set it
 168         SetValue(n);
 169     }
 170     else
 171     {
 172         // invalid number - set text as is (wxMSW compatible)
 173         BlockScrollEvent();
 174         gtk_entry_set_text( GTK_ENTRY(m_widget), wxGTK_CONV( value ) );
 175         UnblockScrollEvent();
 176     }
 177 }
 178
 179 void wxSpinCtrl::SetValue( int value )
 180 {
 181     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 182
 183     BlockScrollEvent();
 184     gtk_spin_button_set_value((GtkSpinButton*)m_widget, value);
 185     UnblockScrollEvent();
 186 }
 187
 188 void wxSpinCtrl::SetSelection(long from, long to)
 189 {
 190     // translate from wxWidgets conventions to GTK+ ones: (-1, -1) means the
 191     // entire range
 192     if ( from == -1 && to == -1 )
 193     {
 194         from = 0;
 195         to = INT_MAX;
 196     }
 197
 198     gtk_editable_select_region( GTK_EDITABLE(m_widget), (gint)from, (gint)to );
 199 }
 200
 201 void wxSpinCtrl::SetRange(int minVal, int maxVal)
 202 {
 203     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 204
 205     BlockScrollEvent();
 206     gtk_spin_button_set_range((GtkSpinButton*)m_widget, minVal, maxVal);
 207     UnblockScrollEvent();
 208 }
 209
 210 void wxSpinCtrl::OnChar( wxKeyEvent &event )
 211 {
 212     wxCHECK_RET( m_widget != NULL, wxT("invalid spin ctrl") );
 213
 214     if (event.GetKeyCode() == WXK_RETURN)
 215     {
 216         wxWindow *top_frame = wxGetTopLevelParent(m_parent);
 217
 218         if ( GTK_IS_WINDOW(top_frame->m_widget) )
 219         {
 220             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 221             if ( window )
 222             {
 223                 GtkWidget *widgetDef = window->default_widget;
 224
 225                 if ( widgetDef )
 226                 {
 227                     gtk_widget_activate(widgetDef);
 228                     return;
 229                 }
 230             }
 231         }
 232     }
 233
 234     if ((event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxTE_PROCESS_ENTER))
 235     {
 236         wxCommandEvent evt( wxEVT_COMMAND_TEXT_ENTER, m_windowId );
 237         evt.SetEventObject(this);
 238         GtkSpinButton *gsb = GTK_SPIN_BUTTON(m_widget);
 239         wxString val = wxGTK_CONV_BACK( gtk_entry_get_text( &gsb->entry ) );
 240         evt.SetString( val );
 241         if (GetEventHandler()->ProcessEvent(evt)) return;
 242     }
 243
 244     event.Skip();
 245 }
 246
 247 GdkWindow *wxSpinCtrl::GTKGetWindow(wxArrayGdkWindows& windows) const
 248 {
 249     GtkSpinButton* spinbutton = GTK_SPIN_BUTTON(m_widget);
 250
 251     windows.push_back(spinbutton->entry.text_area);
 252     windows.push_back(spinbutton->panel);
 253
 254     return NULL;
 255 }
 256
 257 wxSize wxSpinCtrl::DoGetBestSize() const
 258 {
 259     wxSize ret( wxControl::DoGetBestSize() );
 260     wxSize best(95, ret.y); // FIXME: 95?
 261     CacheBestSize(best);
 262     return best;
 263 }
 264
 265 // static
 266 wxVisualAttributes
 267 wxSpinCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 268 {
 269     // TODO: overload to accept functions like gtk_spin_button_new?
 270     // Until then use a similar type
 271     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
 272 }
 273
 274 #endif
 275    // wxUSE_SPINCTRL