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     if (cb->m_blockEvent) return;
  35
  36     // Generate a wx event.
  37     wxCommandEvent event(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, cb->GetId());
  38     event.SetInt(cb->GetValue());
  39     event.SetEventObject(cb);
  40     cb->GetEventHandler()->ProcessEvent(event);
  41 }
  42 }
  43
  44 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED)
  45
  46 // ------------------------------------------------------------------------
  47 // wxToggleBitmapButton
  48 // ------------------------------------------------------------------------
  49
  50 IMPLEMENT_DYNAMIC_CLASS(wxToggleBitmapButton, wxControl)
  51
  52 bool wxToggleBitmapButton::Create(wxWindow *parent, wxWindowID id,
  53                             const wxBitmap &label, const wxPoint &pos,
  54                             const wxSize &size, long style,
  55                             const wxValidator& validator,
  56                             const wxString &name)
  57 {
  58     m_blockEvent = false;
  59
  60     if (!PreCreation(parent, pos, size) ||
  61        !CreateBase(parent, id, pos, size, style, validator, name ))
  62     {
  63         wxFAIL_MSG(wxT("wxToggleBitmapButton creation failed"));
  64         return false;
  65     }
  66
  67     // Create the gtk widget.
  68     m_widget = gtk_toggle_button_new();
  69
  70     if (style & wxNO_BORDER)
  71         gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
  72
  73     m_bitmap = label;
  74     OnSetBitmap();
  75
  76     g_signal_connect (m_widget, "clicked",
  77                       G_CALLBACK (gtk_togglebutton_clicked_callback),
  78                       this);
  79
  80     m_parent->DoAddChild(this);
  81
  82     PostCreation(size);
  83
  84     return true;
  85 }
  86
  87 // void SetValue(bool state)
  88 // Set the value of the toggle button.
  89 void wxToggleBitmapButton::SetValue(bool state)
  90 {
  91     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
  92
  93     if (state == GetValue())
  94         return;
  95
  96     m_blockEvent = true;
  97
  98     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
  99
 100     m_blockEvent = false;
 101 }
 102
 103 // bool GetValue() const
 104 // Get the value of the toggle button.
 105 bool wxToggleBitmapButton::GetValue() const
 106 {
 107     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 108
 109     return gtk_toggle_button_get_active((GtkToggleButton*)m_widget);
 110 }
 111
 112 void wxToggleBitmapButton::SetLabel(const wxBitmap& label)
 113 {
 114     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 115
 116     m_bitmap = label;
 117     InvalidateBestSize();
 118
 119     OnSetBitmap();
 120 }
 121
 122 void wxToggleBitmapButton::OnSetBitmap()
 123 {
 124     if (!m_bitmap.Ok()) return;
 125
 126     GtkWidget* image = ((GtkBin*)m_widget)->child;
 127     if (image == NULL)
 128     {
 129         // initial bitmap
 130         image = gtk_image_new_from_pixbuf(m_bitmap.GetPixbuf());
 131         gtk_widget_show(image);
 132         gtk_container_add((GtkContainer*)m_widget, image);
 133     }
 134     else
 135     {   // subsequent bitmaps
 136         gtk_image_set_from_pixbuf((GtkImage*)image, m_bitmap.GetPixbuf());
 137     }
 138 }
 139
 140 bool wxToggleBitmapButton::Enable(bool enable /*=true*/)
 141 {
 142     if (!wxControl::Enable(enable))
 143         return false;
 144
 145     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 146
 147     return true;
 148 }
 149
 150 void wxToggleBitmapButton::DoApplyWidgetStyle(GtkRcStyle *style)
 151 {
 152     gtk_widget_modify_style(m_widget, style);
 153     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 154 }
 155
 156 GdkWindow *
 157 wxToggleBitmapButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 158 {
 159     return GTK_BUTTON(m_widget)->event_window;
 160 }
 161
 162 // Get the "best" size for this control.
 163 wxSize wxToggleBitmapButton::DoGetBestSize() const
 164 {
 165     wxSize best;
 166
 167     if (m_bitmap.Ok())
 168     {
 169         int border = HasFlag(wxNO_BORDER) ? 4 : 10;
 170         best.x = m_bitmap.GetWidth()+border;
 171         best.y = m_bitmap.GetHeight()+border;
 172     }
 173     CacheBestSize(best);
 174     return best;
 175 }
 176
 177
 178 // static
 179 wxVisualAttributes
 180 wxToggleBitmapButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 181 {
 182     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 183 }
 184
 185
 186 // ------------------------------------------------------------------------
 187 // wxToggleButton
 188 // ------------------------------------------------------------------------
 189
 190 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
 191
 192 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
 193                             const wxString &label, const wxPoint &pos,
 194                             const wxSize &size, long style,
 195                             const wxValidator& validator,
 196                             const wxString &name)
 197 {
 198     m_blockEvent = false;
 199
 200     if (!PreCreation(parent, pos, size) ||
 201         !CreateBase(parent, id, pos, size, style, validator, name ))
 202     {
 203         wxFAIL_MSG(wxT("wxToggleButton creation failed"));
 204         return false;
 205     }
 206
 207     // Create the gtk widget.
 208     m_widget = gtk_toggle_button_new_with_mnemonic("");
 209
 210     SetLabel(label);
 211
 212     g_signal_connect (m_widget, "clicked",
 213                       G_CALLBACK (gtk_togglebutton_clicked_callback),
 214                       this);
 215
 216     m_parent->DoAddChild(this);
 217
 218     PostCreation(size);
 219
 220     return true;
 221 }
 222
 223 // void SetValue(bool state)
 224 // Set the value of the toggle button.
 225 void wxToggleButton::SetValue(bool state)
 226 {
 227     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 228
 229     if (state == GetValue())
 230         return;
 231
 232     m_blockEvent = true;
 233
 234     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 235
 236     m_blockEvent = false;
 237 }
 238
 239 // bool GetValue() const
 240 // Get the value of the toggle button.
 241 bool wxToggleButton::GetValue() const
 242 {
 243     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 244
 245     return GTK_TOGGLE_BUTTON(m_widget)->active;
 246 }
 247
 248 void wxToggleButton::SetLabel(const wxString& label)
 249 {
 250     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 251
 252     wxControl::SetLabel(label);
 253
 254     const wxString labelGTK = GTKConvertMnemonics(label);
 255
 256     gtk_button_set_label(GTK_BUTTON(m_widget), wxGTK_CONV(labelGTK));
 257
 258     ApplyWidgetStyle( false );
 259 }
 260
 261 bool wxToggleButton::Enable(bool enable /*=true*/)
 262 {
 263     if (!wxControl::Enable(enable))
 264         return false;
 265
 266     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 267
 268     return true;
 269 }
 270
 271 void wxToggleButton::DoApplyWidgetStyle(GtkRcStyle *style)
 272 {
 273     gtk_widget_modify_style(m_widget, style);
 274     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 275 }
 276
 277 GdkWindow *
 278 wxToggleButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 279 {
 280     return GTK_BUTTON(m_widget)->event_window;
 281 }
 282
 283 // Get the "best" size for this control.
 284 wxSize wxToggleButton::DoGetBestSize() const
 285 {
 286     wxSize ret(wxControl::DoGetBestSize());
 287
 288     if (!HasFlag(wxBU_EXACTFIT))
 289     {
 290         if (ret.x < 80) ret.x = 80;
 291     }
 292
 293     CacheBestSize(ret);
 294     return ret;
 295 }
 296
 297 // static
 298 wxVisualAttributes
 299 wxToggleButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 300 {
 301     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 302 }
 303
 304 #endif // wxUSE_TOGGLEBTN