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