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     m_acceptsFocus = true;
 106
 107     if (!PreCreation( parent, pos, size ) ||
 108         !CreateBase( parent, id, pos, size, style, wxDefaultValidator, name ))
 109     {
 110         wxFAIL_MSG( wxT("wxSpinCtrl creation failed") );
 111         return false;
 112     }
 113
 114     m_widget = gtk_spin_button_new_with_range(min, max, 1);
 115     gtk_spin_button_set_value((GtkSpinButton*)m_widget, initial);
 116     m_pos = int(gtk_spin_button_get_value((GtkSpinButton*)m_widget));
 117
 118     gtk_spin_button_set_wrap( GTK_SPIN_BUTTON(m_widget),
 119                               (int)(m_windowStyle & wxSP_WRAP) );
 120
 121     g_signal_connect(m_widget, "value_changed", G_CALLBACK(gtk_value_changed), this);
 122     g_signal_connect(m_widget, "changed", G_CALLBACK(gtk_changed), this);
 123
 124     m_parent->DoAddChild( this );
 125
 126     PostCreation(size);
 127
 128     if (!value.empty())
 129     {
 130         SetValue(value);
 131     }
 132
 133     return true;
 134 }
 135
 136 int wxSpinCtrl::GetMin() const
 137 {
 138     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 139
 140     double min;
 141     gtk_spin_button_get_range((GtkSpinButton*)m_widget, &min, NULL);
 142     return int(min);
 143 }
 144
 145 int wxSpinCtrl::GetMax() const
 146 {
 147     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 148
 149     double max;
 150     gtk_spin_button_get_range((GtkSpinButton*)m_widget, NULL, &max);
 151     return int(max);
 152 }
 153
 154 int wxSpinCtrl::GetValue() const
 155 {
 156     wxCHECK_MSG( (m_widget != NULL), 0, wxT("invalid spin button") );
 157
 158     wx_const_cast(wxSpinCtrl*, this)->BlockScrollEvent();
 159     gtk_spin_button_update( GTK_SPIN_BUTTON(m_widget) );
 160     wx_const_cast(wxSpinCtrl*, this)->UnblockScrollEvent();
 161
 162     return m_pos;
 163 }
 164
 165 void wxSpinCtrl::SetValue( const wxString& value )
 166 {
 167     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 168
 169     int n;
 170     if ( (wxSscanf(value, wxT("%d"), &n) == 1) )
 171     {
 172         // a number - set it
 173         SetValue(n);
 174     }
 175     else
 176     {
 177         // invalid number - set text as is (wxMSW compatible)
 178         BlockScrollEvent();
 179         gtk_entry_set_text( GTK_ENTRY(m_widget), wxGTK_CONV( value ) );
 180         UnblockScrollEvent();
 181     }
 182 }
 183
 184 void wxSpinCtrl::SetValue( int value )
 185 {
 186     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 187
 188     BlockScrollEvent();
 189     gtk_spin_button_set_value((GtkSpinButton*)m_widget, value);
 190     UnblockScrollEvent();
 191 }
 192
 193 void wxSpinCtrl::SetSelection(long from, long to)
 194 {
 195     // translate from wxWidgets conventions to GTK+ ones: (-1, -1) means the
 196     // entire range
 197     if ( from == -1 && to == -1 )
 198     {
 199         from = 0;
 200         to = INT_MAX;
 201     }
 202
 203     gtk_editable_select_region( GTK_EDITABLE(m_widget), (gint)from, (gint)to );
 204 }
 205
 206 void wxSpinCtrl::SetRange(int minVal, int maxVal)
 207 {
 208     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 209
 210     BlockScrollEvent();
 211     gtk_spin_button_set_range((GtkSpinButton*)m_widget, minVal, maxVal);
 212     UnblockScrollEvent();
 213 }
 214
 215 void wxSpinCtrl::OnChar( wxKeyEvent &event )
 216 {
 217     wxCHECK_RET( m_widget != NULL, wxT("invalid spin ctrl") );
 218
 219     if (event.GetKeyCode() == WXK_RETURN)
 220     {
 221         wxWindow *top_frame = wxGetTopLevelParent(m_parent);
 222
 223         if ( GTK_IS_WINDOW(top_frame->m_widget) )
 224         {
 225             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 226             if ( window )
 227             {
 228                 GtkWidget *widgetDef = window->default_widget;
 229
 230                 if ( widgetDef )
 231                 {
 232                     gtk_widget_activate(widgetDef);
 233                     return;
 234                 }
 235             }
 236         }
 237     }
 238
 239     if ((event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxTE_PROCESS_ENTER))
 240     {
 241         wxCommandEvent evt( wxEVT_COMMAND_TEXT_ENTER, m_windowId );
 242         evt.SetEventObject(this);
 243         GtkSpinButton *gsb = GTK_SPIN_BUTTON(m_widget);
 244         wxString val = wxGTK_CONV_BACK( gtk_entry_get_text( &gsb->entry ) );
 245         evt.SetString( val );
 246         if (GetEventHandler()->ProcessEvent(evt)) return;
 247     }
 248
 249     event.Skip();
 250 }
 251
 252 bool wxSpinCtrl::IsOwnGtkWindow( GdkWindow *window )
 253 {
 254     GtkSpinButton* spinbutton = GTK_SPIN_BUTTON(m_widget);
 255     return window == spinbutton->entry.text_area || window == spinbutton->panel;
 256 }
 257
 258 wxSize wxSpinCtrl::DoGetBestSize() const
 259 {
 260     wxSize ret( wxControl::DoGetBestSize() );
 261     wxSize best(95, ret.y);
 262     CacheBestSize(best);
 263     return best;
 264 }
 265
 266 // static
 267 wxVisualAttributes
 268 wxSpinCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 269 {
 270     // TODO: overload to accept functions like gtk_spin_button_new?
 271     // Until then use a similar type
 272     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
 273 }
 274
 275 #endif
 276    // wxUSE_SPINCTRL