src/gtk/tglbtn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/tglbtn.cpp
   3 // Purpose:     Definition of the wxToggleButton class, which implements a
   4 //              toggle button under wxGTK.
   5 // Author:      John Norris, minor changes by Axel Schlueter
   6 // Modified by:
   7 // Created:     08.02.01
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) 2000 Johnny C. Norris II
  10 // License:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // For compilers that support precompilation, includes "wx.h".
  14 #include "wx/wxprec.h"
  15
  16 #if wxUSE_TOGGLEBTN
  17
  18 #include "wx/tglbtn.h"
  19
  20 #ifndef WX_PRECOMP
  21     #include "wx/button.h"
  22 #endif
  23
  24 #include "wx/gtk/private.h"
  25
  26 extern bool      g_blockEventsOnDrag;
  27
  28 extern "C" {
  29 static void gtk_togglebutton_clicked_callback(GtkWidget *WXUNUSED(widget), wxToggleButton *cb)
  30 {
  31     if (!cb->m_hasVMT || g_blockEventsOnDrag)
  32         return;
  33
  34     // Generate a wx event.
  35     wxCommandEvent event(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, cb->GetId());
  36     event.SetInt(cb->GetValue());
  37     event.SetEventObject(cb);
  38     cb->HandleWindowEvent(event);
  39 }
  40 }
  41
  42 wxDEFINE_EVENT( wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, wxCommandEvent );
  43
  44 // ------------------------------------------------------------------------
  45 // wxBitmapToggleButton
  46 // ------------------------------------------------------------------------
  47
  48 IMPLEMENT_DYNAMIC_CLASS(wxBitmapToggleButton, wxControl)
  49
  50 bool wxBitmapToggleButton::Create(wxWindow *parent, wxWindowID id,
  51                             const wxBitmap &label, const wxPoint &pos,
  52                             const wxSize &size, long style,
  53                             const wxValidator& validator,
  54                             const wxString &name)
  55 {
  56     if (!PreCreation(parent, pos, size) ||
  57        !CreateBase(parent, id, pos, size, style, validator, name ))
  58     {
  59         wxFAIL_MSG(wxT("wxBitmapToggleButton creation failed"));
  60         return false;
  61     }
  62
  63     // Create the gtk widget.
  64     m_widget = gtk_toggle_button_new();
  65     g_object_ref(m_widget);
  66
  67     if (style & wxNO_BORDER)
  68         gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
  69
  70     m_bitmap = label;
  71     OnSetBitmap();
  72
  73     g_signal_connect (m_widget, "clicked",
  74                       G_CALLBACK (gtk_togglebutton_clicked_callback),
  75                       this);
  76
  77     m_parent->DoAddChild(this);
  78
  79     PostCreation(size);
  80
  81     return true;
  82 }
  83
  84 void wxBitmapToggleButton::GTKDisableEvents()
  85 {
  86     g_signal_handlers_block_by_func(m_widget,
  87                                 (gpointer) gtk_togglebutton_clicked_callback, this);
  88 }
  89
  90 void wxBitmapToggleButton::GTKEnableEvents()
  91 {
  92     g_signal_handlers_unblock_by_func(m_widget,
  93                                 (gpointer) gtk_togglebutton_clicked_callback, this);
  94 }
  95
  96 // void SetValue(bool state)
  97 // Set the value of the toggle button.
  98 void wxBitmapToggleButton::SetValue(bool state)
  99 {
 100     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 101
 102     if (state == GetValue())
 103         return;
 104
 105     GTKDisableEvents();
 106
 107     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 108
 109     GTKEnableEvents();
 110 }
 111
 112 // bool GetValue() const
 113 // Get the value of the toggle button.
 114 bool wxBitmapToggleButton::GetValue() const
 115 {
 116     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 117
 118     return gtk_toggle_button_get_active((GtkToggleButton*)m_widget);
 119 }
 120
 121 void wxBitmapToggleButton::SetLabel(const wxBitmap& label)
 122 {
 123     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 124
 125     m_bitmap = label;
 126     InvalidateBestSize();
 127
 128     OnSetBitmap();
 129 }
 130
 131 void wxBitmapToggleButton::OnSetBitmap()
 132 {
 133     if (!m_bitmap.Ok()) return;
 134
 135     GtkWidget* image = ((GtkBin*)m_widget)->child;
 136     if (image == NULL)
 137     {
 138         image = gtk_image_new();
 139         gtk_widget_show(image);
 140         gtk_container_add((GtkContainer*)m_widget, image);
 141     }
 142     // always use pixbuf, because pixmap mask does not
 143     // work with disabled images in some themes
 144     gtk_image_set_from_pixbuf((GtkImage*)image, m_bitmap.GetPixbuf());
 145 }
 146
 147 bool wxBitmapToggleButton::Enable(bool enable /*=true*/)
 148 {
 149     bool isEnabled = IsEnabled();
 150
 151     if (!wxControl::Enable(enable))
 152         return false;
 153
 154     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 155
 156     if (!isEnabled && enable)
 157     {
 158         GTKFixSensitivity();
 159     }
 160
 161     return true;
 162 }
 163
 164 void wxBitmapToggleButton::DoApplyWidgetStyle(GtkRcStyle *style)
 165 {
 166     gtk_widget_modify_style(m_widget, style);
 167     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 168 }
 169
 170 GdkWindow *
 171 wxBitmapToggleButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 172 {
 173     return GTK_BUTTON(m_widget)->event_window;
 174 }
 175
 176 // Get the "best" size for this control.
 177 wxSize wxBitmapToggleButton::DoGetBestSize() const
 178 {
 179     wxSize best;
 180
 181     if (m_bitmap.Ok())
 182     {
 183         int border = HasFlag(wxNO_BORDER) ? 4 : 10;
 184         best.x = m_bitmap.GetWidth()+border;
 185         best.y = m_bitmap.GetHeight()+border;
 186     }
 187     CacheBestSize(best);
 188     return best;
 189 }
 190
 191
 192 // static
 193 wxVisualAttributes
 194 wxBitmapToggleButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 195 {
 196     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 197 }
 198
 199
 200 // ------------------------------------------------------------------------
 201 // wxToggleButton
 202 // ------------------------------------------------------------------------
 203
 204 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
 205
 206 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
 207                             const wxString &label, const wxPoint &pos,
 208                             const wxSize &size, long style,
 209                             const wxValidator& validator,
 210                             const wxString &name)
 211 {
 212     if (!PreCreation(parent, pos, size) ||
 213         !CreateBase(parent, id, pos, size, style, validator, name ))
 214     {
 215         wxFAIL_MSG(wxT("wxToggleButton creation failed"));
 216         return false;
 217     }
 218
 219     // Create the gtk widget.
 220     m_widget = gtk_toggle_button_new_with_mnemonic("");
 221     g_object_ref(m_widget);
 222
 223     SetLabel(label);
 224
 225     g_signal_connect (m_widget, "clicked",
 226                       G_CALLBACK (gtk_togglebutton_clicked_callback),
 227                       this);
 228
 229     m_parent->DoAddChild(this);
 230
 231     PostCreation(size);
 232
 233     return true;
 234 }
 235
 236 void wxToggleButton::GTKDisableEvents()
 237 {
 238     g_signal_handlers_block_by_func(m_widget,
 239                                 (gpointer) gtk_togglebutton_clicked_callback, this);
 240 }
 241
 242 void wxToggleButton::GTKEnableEvents()
 243 {
 244     g_signal_handlers_unblock_by_func(m_widget,
 245                                 (gpointer) gtk_togglebutton_clicked_callback, this);
 246 }
 247
 248 // void SetValue(bool state)
 249 // Set the value of the toggle button.
 250 void wxToggleButton::SetValue(bool state)
 251 {
 252     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 253
 254     if (state == GetValue())
 255         return;
 256
 257     GTKDisableEvents();
 258
 259     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 260
 261     GTKEnableEvents();
 262 }
 263
 264 // bool GetValue() const
 265 // Get the value of the toggle button.
 266 bool wxToggleButton::GetValue() const
 267 {
 268     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 269
 270     return GTK_TOGGLE_BUTTON(m_widget)->active;
 271 }
 272
 273 void wxToggleButton::SetLabel(const wxString& label)
 274 {
 275     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 276
 277     wxControl::SetLabel(label);
 278
 279     const wxString labelGTK = GTKConvertMnemonics(label);
 280
 281     gtk_button_set_label(GTK_BUTTON(m_widget), wxGTK_CONV(labelGTK));
 282
 283     GTKApplyWidgetStyle( false );
 284 }
 285
 286 bool wxToggleButton::Enable(bool enable /*=true*/)
 287 {
 288     if (!base_type::Enable(enable))
 289         return false;
 290
 291     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 292
 293     if (enable)
 294         GTKFixSensitivity();
 295
 296     return true;
 297 }
 298
 299 void wxToggleButton::DoApplyWidgetStyle(GtkRcStyle *style)
 300 {
 301     gtk_widget_modify_style(m_widget, style);
 302     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 303 }
 304
 305 GdkWindow *
 306 wxToggleButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 307 {
 308     return GTK_BUTTON(m_widget)->event_window;
 309 }
 310
 311 // Get the "best" size for this control.
 312 wxSize wxToggleButton::DoGetBestSize() const
 313 {
 314     wxSize ret(wxControl::DoGetBestSize());
 315
 316     if (!HasFlag(wxBU_EXACTFIT))
 317     {
 318         if (ret.x < 80) ret.x = 80;
 319     }
 320
 321     CacheBestSize(ret);
 322     return ret;
 323 }
 324
 325 // static
 326 wxVisualAttributes
 327 wxToggleButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 328 {
 329     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 330 }
 331
 332 #endif // wxUSE_TOGGLEBTN