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 (g_isIdle)
  32         wxapp_install_idle_handler();
  33
  34     if (!cb->m_hasVMT || g_blockEventsOnDrag)
  35         return;
  36
  37     if (cb->m_blockEvent) return;
  38
  39     // Generate a wx event.
  40     wxCommandEvent event(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, cb->GetId());
  41     event.SetInt(cb->GetValue());
  42     event.SetEventObject(cb);
  43     cb->GetEventHandler()->ProcessEvent(event);
  44 }
  45 }
  46
  47 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED)
  48
  49 // ------------------------------------------------------------------------
  50 // wxToggleBitmapButton
  51 // ------------------------------------------------------------------------
  52
  53 IMPLEMENT_DYNAMIC_CLASS(wxToggleBitmapButton, wxControl)
  54
  55 bool wxToggleBitmapButton::Create(wxWindow *parent, wxWindowID id,
  56                             const wxBitmap &label, const wxPoint &pos,
  57                             const wxSize &size, long style,
  58                             const wxValidator& validator,
  59                             const wxString &name)
  60 {
  61     m_needParent = true;
  62     m_acceptsFocus = true;
  63
  64     m_blockEvent = false;
  65
  66     if (!PreCreation(parent, pos, size) ||
  67        !CreateBase(parent, id, pos, size, style, validator, name ))
  68     {
  69         wxFAIL_MSG(wxT("wxToggleBitmapButton creation failed"));
  70         return false;
  71     }
  72
  73     // Create the gtk widget.
  74     m_widget = gtk_toggle_button_new();
  75
  76     if (style & wxNO_BORDER)
  77         gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
  78
  79     m_bitmap = label;
  80     OnSetBitmap();
  81
  82     g_signal_connect (m_widget, "clicked",
  83                       G_CALLBACK (gtk_togglebutton_clicked_callback),
  84                       this);
  85
  86     m_parent->DoAddChild(this);
  87
  88     PostCreation(size);
  89
  90     return true;
  91 }
  92
  93 // void SetValue(bool state)
  94 // Set the value of the toggle button.
  95 void wxToggleBitmapButton::SetValue(bool state)
  96 {
  97     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
  98
  99     if (state == GetValue())
 100         return;
 101
 102     m_blockEvent = true;
 103
 104     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 105
 106     m_blockEvent = false;
 107 }
 108
 109 // bool GetValue() const
 110 // Get the value of the toggle button.
 111 bool wxToggleBitmapButton::GetValue() const
 112 {
 113     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 114
 115     return gtk_toggle_button_get_active((GtkToggleButton*)m_widget);
 116 }
 117
 118 void wxToggleBitmapButton::SetLabel(const wxBitmap& label)
 119 {
 120     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 121
 122     m_bitmap = label;
 123     InvalidateBestSize();
 124
 125     OnSetBitmap();
 126 }
 127
 128 void wxToggleBitmapButton::OnSetBitmap()
 129 {
 130     if (!m_bitmap.Ok()) return;
 131
 132     GtkWidget* image = ((GtkBin*)m_widget)->child;
 133     if (image == NULL)
 134     {
 135         // initial bitmap
 136         image = gtk_image_new_from_pixbuf(m_bitmap.GetPixbuf());
 137         gtk_widget_show(image);
 138         gtk_container_add((GtkContainer*)m_widget, image);
 139     }
 140     else
 141     {   // subsequent bitmaps
 142         gtk_image_set_from_pixbuf((GtkImage*)image, m_bitmap.GetPixbuf());
 143     }
 144 }
 145
 146 bool wxToggleBitmapButton::Enable(bool enable /*=true*/)
 147 {
 148     if (!wxControl::Enable(enable))
 149         return false;
 150
 151     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 152
 153     return true;
 154 }
 155
 156 void wxToggleBitmapButton::DoApplyWidgetStyle(GtkRcStyle *style)
 157 {
 158     gtk_widget_modify_style(m_widget, style);
 159     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 160 }
 161
 162 GdkWindow *
 163 wxToggleBitmapButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 164 {
 165     return GTK_BUTTON(m_widget)->event_window;
 166 }
 167
 168 // Get the "best" size for this control.
 169 wxSize wxToggleBitmapButton::DoGetBestSize() const
 170 {
 171     wxSize best;
 172
 173     if (m_bitmap.Ok())
 174     {
 175         int border = HasFlag(wxNO_BORDER) ? 4 : 10;
 176         best.x = m_bitmap.GetWidth()+border;
 177         best.y = m_bitmap.GetHeight()+border;
 178     }
 179     CacheBestSize(best);
 180     return best;
 181 }
 182
 183
 184 // static
 185 wxVisualAttributes
 186 wxToggleBitmapButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 187 {
 188     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 189 }
 190
 191
 192 // ------------------------------------------------------------------------
 193 // wxToggleButton
 194 // ------------------------------------------------------------------------
 195
 196 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
 197
 198 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
 199                             const wxString &label, const wxPoint &pos,
 200                             const wxSize &size, long style,
 201                             const wxValidator& validator,
 202                             const wxString &name)
 203 {
 204     m_needParent = true;
 205     m_acceptsFocus = true;
 206
 207     m_blockEvent = false;
 208
 209     if (!PreCreation(parent, pos, size) ||
 210         !CreateBase(parent, id, pos, size, style, validator, name ))
 211     {
 212         wxFAIL_MSG(wxT("wxToggleButton creation failed"));
 213         return false;
 214     }
 215
 216     // Create the gtk widget.
 217     m_widget = gtk_toggle_button_new_with_mnemonic("");
 218
 219     SetLabel(label);
 220
 221     g_signal_connect (m_widget, "clicked",
 222                       G_CALLBACK (gtk_togglebutton_clicked_callback),
 223                       this);
 224
 225     m_parent->DoAddChild(this);
 226
 227     PostCreation(size);
 228
 229     return true;
 230 }
 231
 232 // void SetValue(bool state)
 233 // Set the value of the toggle button.
 234 void wxToggleButton::SetValue(bool state)
 235 {
 236     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 237
 238     if (state == GetValue())
 239         return;
 240
 241     m_blockEvent = true;
 242
 243     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 244
 245     m_blockEvent = false;
 246 }
 247
 248 // bool GetValue() const
 249 // Get the value of the toggle button.
 250 bool wxToggleButton::GetValue() const
 251 {
 252     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 253
 254     return GTK_TOGGLE_BUTTON(m_widget)->active;
 255 }
 256
 257 void wxToggleButton::SetLabel(const wxString& label)
 258 {
 259     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 260
 261     wxControl::SetLabel(label);
 262
 263     const wxString labelGTK = GTKConvertMnemonics(label);
 264
 265     gtk_button_set_label(GTK_BUTTON(m_widget), wxGTK_CONV(labelGTK));
 266
 267     ApplyWidgetStyle( false );
 268 }
 269
 270 bool wxToggleButton::Enable(bool enable /*=true*/)
 271 {
 272     if (!wxControl::Enable(enable))
 273         return false;
 274
 275     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 276
 277     return true;
 278 }
 279
 280 void wxToggleButton::DoApplyWidgetStyle(GtkRcStyle *style)
 281 {
 282     gtk_widget_modify_style(m_widget, style);
 283     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 284 }
 285
 286 GdkWindow *
 287 wxToggleButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 288 {
 289     return GTK_BUTTON(m_widget)->event_window;
 290 }
 291
 292 // Get the "best" size for this control.
 293 wxSize wxToggleButton::DoGetBestSize() const
 294 {
 295     wxSize ret(wxControl::DoGetBestSize());
 296
 297     if (!HasFlag(wxBU_EXACTFIT))
 298     {
 299         if (ret.x < 80) ret.x = 80;
 300     }
 301
 302     CacheBestSize(ret);
 303     return ret;
 304 }
 305
 306 // static
 307 wxVisualAttributes
 308 wxToggleButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 309 {
 310     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 311 }
 312
 313 #endif // wxUSE_TOGGLEBTN