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     if (g_isIdle) wxapp_install_idle_handler();
  40
  41     win->m_pos = int(gtk_spin_button_get_value(spinbutton));
  42     if (!win->m_hasVMT || g_blockEventsOnDrag || win->m_blockScrollEvent)
  43         return;
  44
  45     wxCommandEvent event( wxEVT_COMMAND_SPINCTRL_UPDATED, win->GetId());
  46     event.SetEventObject( win );
  47
  48     // note that we don't use wxSpinCtrl::GetValue() here because it would
  49     // adjust the value to fit into the control range and this means that we
  50     // would never be able to enter an "invalid" value in the control, even
  51     // temporarily - and trying to enter 10 into the control which accepts the
  52     // values in range 5..50 is then, ummm, quite challenging (hint: you can't
  53     // enter 1!) (VZ)
  54     event.SetInt(win->m_pos);
  55     win->GetEventHandler()->ProcessEvent( event );
  56 }
  57 }
  58
  59 //-----------------------------------------------------------------------------
  60 //  "changed"
  61 //-----------------------------------------------------------------------------
  62
  63 extern "C" {
  64 static void
  65 gtk_changed(GtkSpinButton* spinbutton, wxSpinCtrl* win)
  66 {
  67     if (g_isIdle)
  68         wxapp_install_idle_handler();
  69
  70     if (!win->m_hasVMT || win->m_blockScrollEvent)
  71         return;
  72
  73     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
  74     event.SetEventObject( win );
  75
  76     // see above
  77     event.SetInt(win->m_pos);
  78     win->GetEventHandler()->ProcessEvent( event );
  79 }
  80 }
  81
  82 //-----------------------------------------------------------------------------
  83 // wxSpinCtrl
  84 //-----------------------------------------------------------------------------
  85
  86 IMPLEMENT_DYNAMIC_CLASS(wxSpinCtrl,wxControl)
  87
  88 BEGIN_EVENT_TABLE(wxSpinCtrl, wxControl)
  89     EVT_CHAR(wxSpinCtrl::OnChar)
  90 END_EVENT_TABLE()
  91
  92 wxSpinCtrl::wxSpinCtrl()
  93 {
  94     m_pos = 0;
  95 }
  96
  97 bool wxSpinCtrl::Create(wxWindow *parent, wxWindowID id,
  98                         const wxString& value,
  99                         const wxPoint& pos,  const wxSize& size,
 100                         long style,
 101                         int min, int max, int initial,
 102                         const wxString& name)
 103 {
 104     m_needParent = true;
 105
 106     if (!PreCreation( parent, pos, size ) ||
 107         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 108     {
 109         wxFAIL_MSG( wxT("wxSpinCtrl creation failed") );
 110         return false;
 111     }
 112
 113     m_widget = gtk_spin_button_new_with_range(min, max, 1);
 114     gtk_spin_button_set_value((GtkSpinButton*)m_widget, initial);
 115     m_pos = int(gtk_spin_button_get_value((GtkSpinButton*)m_widget));
 116
 117     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget),
 118                               (int)(m_windowStyle & wxSP_WRAP) );
 119
 120     g_signal_connect(m_widget, "value_changed", G_CALLBACK(gtk_value_changed), this);
 121     g_signal_connect(m_widget, "changed", G_CALLBACK(gtk_changed), this);
 122
 123     m_parent->DoAddChild( this );
 124
 125     PostCreation(size);
 126
 127     if (!value.empty())
 128     {
 129         SetValue(value);
 130     }
 131
 132     return true;
 133 }
 134
 135 int wxSpinCtrl::GetMin() const
 136 {
 137     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 138
 139     double min;
 140     gtk_spin_button_get_range((GtkSpinButton*)m_widget, &min, NULL);
 141     return int(min);
 142 }
 143
 144 int wxSpinCtrl::GetMax() const
 145 {
 146     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 147
 148     double max;
 149     gtk_spin_button_get_range((GtkSpinButton*)m_widget, NULL, &max);
 150     return int(max);
 151 }
 152
 153 int wxSpinCtrl::GetValue() const
 154 {
 155     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 156
 157     wx_const_cast(wxSpinCtrl*, this)->BlockScrollEvent();
 158     gtk_spin_button_update( GTK_SPIN_BUTTON(m_widget) );
 159     wx_const_cast(wxSpinCtrl*, this)->UnblockScrollEvent();
 160
 161     return m_pos;
 162 }
 163
 164 void wxSpinCtrl::SetValue( const wxString& value )
 165 {
 166     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 167
 168     int n;
 169     if ( (wxSscanf(value, wxT("%d"), &n) == 1) )
 170     {
 171         // a number - set it
 172         SetValue(n);
 173     }
 174     else
 175     {
 176         // invalid number - set text as is (wxMSW compatible)
 177         BlockScrollEvent();
 178         gtk_entry_set_text( GTK_ENTRY(m_widget), wxGTK_CONV( value ) );
 179         UnblockScrollEvent();
 180     }
 181 }
 182
 183 void wxSpinCtrl::SetValue( int value )
 184 {
 185     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 186
 187     BlockScrollEvent();
 188     gtk_spin_button_set_value((GtkSpinButton*)m_widget, value);
 189     UnblockScrollEvent();
 190 }
 191
 192 void wxSpinCtrl::SetSelection(long from, long to)
 193 {
 194     // translate from wxWidgets conventions to GTK+ ones: (-1, -1) means the
 195     // entire range
 196     if ( from == -1 && to == -1 )
 197     {
 198         from = 0;
 199         to = INT_MAX;
 200     }
 201
 202     gtk_editable_select_region( GTK_EDITABLE(m_widget), (gint)from, (gint)to );
 203 }
 204
 205 void wxSpinCtrl::SetRange(int minVal, int maxVal)
 206 {
 207     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 208
 209     BlockScrollEvent();
 210     gtk_spin_button_set_range((GtkSpinButton*)m_widget, minVal, maxVal);
 211     UnblockScrollEvent();
 212 }
 213
 214 void wxSpinCtrl::OnChar( wxKeyEvent &event )
 215 {
 216     wxCHECK_RET( m_widget != NULL, wxT("invalid spin ctrl") );
 217
 218     if (event.GetKeyCode() == WXK_RETURN)
 219     {
 220         wxWindow *top_frame = wxGetTopLevelParent(m_parent);
 221
 222         if ( GTK_IS_WINDOW(top_frame->m_widget) )
 223         {
 224             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 225             if ( window )
 226             {
 227                 GtkWidget *widgetDef = window->default_widget;
 228
 229                 if ( widgetDef )
 230                 {
 231                     gtk_widget_activate(widgetDef);
 232                     return;
 233                 }
 234             }
 235         }
 236     }
 237
 238     if ((event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxTE_PROCESS_ENTER))
 239     {
 240         wxCommandEvent evt( wxEVT_COMMAND_TEXT_ENTER, m_windowId );
 241         evt.SetEventObject(this);
 242         GtkSpinButton *gsb = GTK_SPIN_BUTTON(m_widget);
 243         wxString val = wxGTK_CONV_BACK( gtk_entry_get_text( &gsb->entry ) );
 244         evt.SetString( val );
 245         if (GetEventHandler()->ProcessEvent(evt)) return;
 246     }
 247
 248     event.Skip();
 249 }
 250
 251 GdkWindow *wxSpinCtrl::GTKGetWindow(wxArrayGdkWindows& windows) const
 252 {
 253     GtkSpinButton* spinbutton = GTK_SPIN_BUTTON(m_widget);
 254
 255     windows.push_back(spinbutton->entry.text_area);
 256     windows.push_back(spinbutton->panel);
 257
 258     return NULL;
 259 }
 260
 261 wxSize wxSpinCtrl::DoGetBestSize() const
 262 {
 263     wxSize ret( wxControl::DoGetBestSize() );
 264     wxSize best(95, ret.y); // FIXME: 95?
 265     CacheBestSize(best);
 266     return best;
 267 }
 268
 269 // static
 270 wxVisualAttributes
 271 wxSpinCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 272 {
 273     // TODO: overload to accept functions like gtk_spin_button_new?
 274     // Until then use a similar type
 275     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
 276 }
 277
 278 #endif
 279    // wxUSE_SPINCTRL