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_needParent = true;
  59
  60     m_blockEvent = false;
  61
  62     if (!PreCreation(parent, pos, size) ||
  63        !CreateBase(parent, id, pos, size, style, validator, name ))
  64     {
  65         wxFAIL_MSG(wxT("wxToggleBitmapButton creation failed"));
  66         return false;
  67     }
  68
  69     // Create the gtk widget.
  70     m_widget = gtk_toggle_button_new();
  71
  72     if (style & wxNO_BORDER)
  73         gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
  74
  75     m_bitmap = label;
  76     OnSetBitmap();
  77
  78     g_signal_connect (m_widget, "clicked",
  79                       G_CALLBACK (gtk_togglebutton_clicked_callback),
  80                       this);
  81
  82     m_parent->DoAddChild(this);
  83
  84     PostCreation(size);
  85
  86     return true;
  87 }
  88
  89 // void SetValue(bool state)
  90 // Set the value of the toggle button.
  91 void wxToggleBitmapButton::SetValue(bool state)
  92 {
  93     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
  94
  95     if (state == GetValue())
  96         return;
  97
  98     m_blockEvent = true;
  99
 100     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 101
 102     m_blockEvent = false;
 103 }
 104
 105 // bool GetValue() const
 106 // Get the value of the toggle button.
 107 bool wxToggleBitmapButton::GetValue() const
 108 {
 109     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 110
 111     return gtk_toggle_button_get_active((GtkToggleButton*)m_widget);
 112 }
 113
 114 void wxToggleBitmapButton::SetLabel(const wxBitmap& label)
 115 {
 116     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 117
 118     m_bitmap = label;
 119     InvalidateBestSize();
 120
 121     OnSetBitmap();
 122 }
 123
 124 void wxToggleBitmapButton::OnSetBitmap()
 125 {
 126     if (!m_bitmap.Ok()) return;
 127
 128     GtkWidget* image = ((GtkBin*)m_widget)->child;
 129     if (image == NULL)
 130     {
 131         // initial bitmap
 132         image = gtk_image_new_from_pixbuf(m_bitmap.GetPixbuf());
 133         gtk_widget_show(image);
 134         gtk_container_add((GtkContainer*)m_widget, image);
 135     }
 136     else
 137     {   // subsequent bitmaps
 138         gtk_image_set_from_pixbuf((GtkImage*)image, m_bitmap.GetPixbuf());
 139     }
 140 }
 141
 142 bool wxToggleBitmapButton::Enable(bool enable /*=true*/)
 143 {
 144     if (!wxControl::Enable(enable))
 145         return false;
 146
 147     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 148
 149     return true;
 150 }
 151
 152 void wxToggleBitmapButton::DoApplyWidgetStyle(GtkRcStyle *style)
 153 {
 154     gtk_widget_modify_style(m_widget, style);
 155     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 156 }
 157
 158 GdkWindow *
 159 wxToggleBitmapButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 160 {
 161     return GTK_BUTTON(m_widget)->event_window;
 162 }
 163
 164 // Get the "best" size for this control.
 165 wxSize wxToggleBitmapButton::DoGetBestSize() const
 166 {
 167     wxSize best;
 168
 169     if (m_bitmap.Ok())
 170     {
 171         int border = HasFlag(wxNO_BORDER) ? 4 : 10;
 172         best.x = m_bitmap.GetWidth()+border;
 173         best.y = m_bitmap.GetHeight()+border;
 174     }
 175     CacheBestSize(best);
 176     return best;
 177 }
 178
 179
 180 // static
 181 wxVisualAttributes
 182 wxToggleBitmapButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 183 {
 184     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 185 }
 186
 187
 188 // ------------------------------------------------------------------------
 189 // wxToggleButton
 190 // ------------------------------------------------------------------------
 191
 192 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
 193
 194 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
 195                             const wxString &label, const wxPoint &pos,
 196                             const wxSize &size, long style,
 197                             const wxValidator& validator,
 198                             const wxString &name)
 199 {
 200     m_needParent = true;
 201
 202     m_blockEvent = false;
 203
 204     if (!PreCreation(parent, pos, size) ||
 205         !CreateBase(parent, id, pos, size, style, validator, name ))
 206     {
 207         wxFAIL_MSG(wxT("wxToggleButton creation failed"));
 208         return false;
 209     }
 210
 211     // Create the gtk widget.
 212     m_widget = gtk_toggle_button_new_with_mnemonic("");
 213
 214     SetLabel(label);
 215
 216     g_signal_connect (m_widget, "clicked",
 217                       G_CALLBACK (gtk_togglebutton_clicked_callback),
 218                       this);
 219
 220     m_parent->DoAddChild(this);
 221
 222     PostCreation(size);
 223
 224     return true;
 225 }
 226
 227 // void SetValue(bool state)
 228 // Set the value of the toggle button.
 229 void wxToggleButton::SetValue(bool state)
 230 {
 231     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 232
 233     if (state == GetValue())
 234         return;
 235
 236     m_blockEvent = true;
 237
 238     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 239
 240     m_blockEvent = false;
 241 }
 242
 243 // bool GetValue() const
 244 // Get the value of the toggle button.
 245 bool wxToggleButton::GetValue() const
 246 {
 247     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 248
 249     return GTK_TOGGLE_BUTTON(m_widget)->active;
 250 }
 251
 252 void wxToggleButton::SetLabel(const wxString& label)
 253 {
 254     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 255
 256     wxControl::SetLabel(label);
 257
 258     const wxString labelGTK = GTKConvertMnemonics(label);
 259
 260     gtk_button_set_label(GTK_BUTTON(m_widget), wxGTK_CONV(labelGTK));
 261
 262     ApplyWidgetStyle( false );
 263 }
 264
 265 bool wxToggleButton::Enable(bool enable /*=true*/)
 266 {
 267     if (!wxControl::Enable(enable))
 268         return false;
 269
 270     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 271
 272     return true;
 273 }
 274
 275 void wxToggleButton::DoApplyWidgetStyle(GtkRcStyle *style)
 276 {
 277     gtk_widget_modify_style(m_widget, style);
 278     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 279 }
 280
 281 GdkWindow *
 282 wxToggleButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 283 {
 284     return GTK_BUTTON(m_widget)->event_window;
 285 }
 286
 287 // Get the "best" size for this control.
 288 wxSize wxToggleButton::DoGetBestSize() const
 289 {
 290     wxSize ret(wxControl::DoGetBestSize());
 291
 292     if (!HasFlag(wxBU_EXACTFIT))
 293     {
 294         if (ret.x < 80) ret.x = 80;
 295     }
 296
 297     CacheBestSize(ret);
 298     return ret;
 299 }
 300
 301 // static
 302 wxVisualAttributes
 303 wxToggleButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 304 {
 305     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 306 }
 307
 308 #endif // wxUSE_TOGGLEBTN