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     if (!PreCreation( parent, pos, size ) ||
 101         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 102     {
 103         wxFAIL_MSG( wxT("wxSpinCtrl creation failed") );
 104         return false;
 105     }
 106
 107     m_widget = gtk_spin_button_new_with_range(min, max, 1);
 108     gtk_spin_button_set_value((GtkSpinButton*)m_widget, initial);
 109     m_pos = int(gtk_spin_button_get_value((GtkSpinButton*)m_widget));
 110
 111     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget),
 112                               (int)(m_windowStyle & wxSP_WRAP) );
 113
 114     g_signal_connect(m_widget, "value_changed", G_CALLBACK(gtk_value_changed), this);
 115     g_signal_connect(m_widget, "changed", G_CALLBACK(gtk_changed), this);
 116
 117     m_parent->DoAddChild( this );
 118
 119     PostCreation(size);
 120
 121     if (!value.empty())
 122     {
 123         SetValue(value);
 124     }
 125
 126     return true;
 127 }
 128
 129 int wxSpinCtrl::GetMin() const
 130 {
 131     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 132
 133     double min;
 134     gtk_spin_button_get_range((GtkSpinButton*)m_widget, &min, NULL);
 135     return int(min);
 136 }
 137
 138 int wxSpinCtrl::GetMax() const
 139 {
 140     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 141
 142     double max;
 143     gtk_spin_button_get_range((GtkSpinButton*)m_widget, NULL, &max);
 144     return int(max);
 145 }
 146
 147 int wxSpinCtrl::GetValue() const
 148 {
 149     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 150
 151     wx_const_cast(wxSpinCtrl*, this)->BlockScrollEvent();
 152     gtk_spin_button_update( GTK_SPIN_BUTTON(m_widget) );
 153     wx_const_cast(wxSpinCtrl*, this)->UnblockScrollEvent();
 154
 155     return m_pos;
 156 }
 157
 158 void wxSpinCtrl::SetValue( const wxString& value )
 159 {
 160     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 161
 162     int n;
 163     if ( (wxSscanf(value, wxT("%d"), &n) == 1) )
 164     {
 165         // a number - set it
 166         SetValue(n);
 167     }
 168     else
 169     {
 170         // invalid number - set text as is (wxMSW compatible)
 171         BlockScrollEvent();
 172         gtk_entry_set_text( GTK_ENTRY(m_widget), wxGTK_CONV( value ) );
 173         UnblockScrollEvent();
 174     }
 175 }
 176
 177 void wxSpinCtrl::SetValue( int value )
 178 {
 179     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 180
 181     BlockScrollEvent();
 182     gtk_spin_button_set_value((GtkSpinButton*)m_widget, value);
 183     UnblockScrollEvent();
 184 }
 185
 186 void wxSpinCtrl::SetSelection(long from, long to)
 187 {
 188     // translate from wxWidgets conventions to GTK+ ones: (-1, -1) means the
 189     // entire range
 190     if ( from == -1 && to == -1 )
 191     {
 192         from = 0;
 193         to = INT_MAX;
 194     }
 195
 196     gtk_editable_select_region( GTK_EDITABLE(m_widget), (gint)from, (gint)to );
 197 }
 198
 199 void wxSpinCtrl::SetRange(int minVal, int maxVal)
 200 {
 201     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 202
 203     BlockScrollEvent();
 204     gtk_spin_button_set_range((GtkSpinButton*)m_widget, minVal, maxVal);
 205     UnblockScrollEvent();
 206 }
 207
 208 void wxSpinCtrl::OnChar( wxKeyEvent &event )
 209 {
 210     wxCHECK_RET( m_widget != NULL, wxT("invalid spin ctrl") );
 211
 212     if (event.GetKeyCode() == WXK_RETURN)
 213     {
 214         wxWindow *top_frame = wxGetTopLevelParent(m_parent);
 215
 216         if ( GTK_IS_WINDOW(top_frame->m_widget) )
 217         {
 218             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 219             if ( window )
 220             {
 221                 GtkWidget *widgetDef = window->default_widget;
 222
 223                 if ( widgetDef )
 224                 {
 225                     gtk_widget_activate(widgetDef);
 226                     return;
 227                 }
 228             }
 229         }
 230     }
 231
 232     if ((event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxTE_PROCESS_ENTER))
 233     {
 234         wxCommandEvent evt( wxEVT_COMMAND_TEXT_ENTER, m_windowId );
 235         evt.SetEventObject(this);
 236         GtkSpinButton *gsb = GTK_SPIN_BUTTON(m_widget);
 237         wxString val = wxGTK_CONV_BACK( gtk_entry_get_text( &gsb->entry ) );
 238         evt.SetString( val );
 239         if (GetEventHandler()->ProcessEvent(evt)) return;
 240     }
 241
 242     event.Skip();
 243 }
 244
 245 GdkWindow *wxSpinCtrl::GTKGetWindow(wxArrayGdkWindows& windows) const
 246 {
 247     GtkSpinButton* spinbutton = GTK_SPIN_BUTTON(m_widget);
 248
 249     windows.push_back(spinbutton->entry.text_area);
 250     windows.push_back(spinbutton->panel);
 251
 252     return NULL;
 253 }
 254
 255 wxSize wxSpinCtrl::DoGetBestSize() const
 256 {
 257     wxSize ret( wxControl::DoGetBestSize() );
 258     wxSize best(95, ret.y); // FIXME: 95?
 259     CacheBestSize(best);
 260     return best;
 261 }
 262
 263 // static
 264 wxVisualAttributes
 265 wxSpinCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 266 {
 267     // TODO: overload to accept functions like gtk_spin_button_new?
 268     // Until then use a similar type
 269     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
 270 }
 271
 272 #endif
 273    // wxUSE_SPINCTRL