src/gtk1/tglbtn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/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/gtk1/private.h"
  25
  26 extern void wxapp_install_idle_handler();
  27 extern bool g_isIdle;
  28 extern bool      g_blockEventsOnDrag;
  29 extern wxCursor   g_globalCursor;
  30
  31 extern "C" {
  32 static void gtk_togglebutton_clicked_callback(GtkWidget *WXUNUSED(widget), wxToggleButton *cb)
  33 {
  34     if (g_isIdle)
  35         wxapp_install_idle_handler();
  36
  37     if (!cb->m_hasVMT || g_blockEventsOnDrag)
  38         return;
  39
  40     if (cb->m_blockEvent) return;
  41
  42     // Generate a wx event.
  43     wxCommandEvent event(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, cb->GetId());
  44     event.SetInt(cb->GetValue());
  45     event.SetEventObject(cb);
  46     cb->GetEventHandler()->ProcessEvent(event);
  47 }
  48 }
  49
  50 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED)
  51
  52 // ------------------------------------------------------------------------
  53 // wxToggleBitmapButton
  54 // ------------------------------------------------------------------------
  55
  56 IMPLEMENT_DYNAMIC_CLASS(wxToggleBitmapButton, wxControl)
  57
  58 bool wxToggleBitmapButton::Create(wxWindow *parent, wxWindowID id,
  59                             const wxBitmap &label, const wxPoint &pos,
  60                             const wxSize &size, long style,
  61                             const wxValidator& validator,
  62                             const wxString &name)
  63 {
  64     m_needParent = true;
  65     m_acceptsFocus = true;
  66
  67     m_blockEvent = false;
  68
  69     if (!PreCreation(parent, pos, size) ||
  70        !CreateBase(parent, id, pos, size, style, validator, name ))
  71     {
  72         wxFAIL_MSG(wxT("wxToggleBitmapButton creation failed"));
  73         return false;
  74     }
  75
  76     m_bitmap = label;
  77
  78     // Create the gtk widget.
  79     m_widget = gtk_toggle_button_new();
  80
  81     if (style & wxNO_BORDER)
  82        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
  83
  84     if (m_bitmap.Ok())
  85     {
  86         OnSetBitmap();
  87     }
  88
  89     gtk_signal_connect(GTK_OBJECT(m_widget), "clicked",
  90                       GTK_SIGNAL_FUNC(gtk_togglebutton_clicked_callback),
  91                       (gpointer *)this);
  92
  93     m_parent->DoAddChild(this);
  94
  95     PostCreation(size);
  96
  97     return true;
  98 }
  99
 100 // void SetValue(bool state)
 101 // Set the value of the toggle button.
 102 void wxToggleBitmapButton::SetValue(bool state)
 103 {
 104     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 105
 106     if (state == GetValue())
 107         return;
 108
 109     m_blockEvent = true;
 110
 111     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 112
 113     m_blockEvent = false;
 114 }
 115
 116 // bool GetValue() const
 117 // Get the value of the toggle button.
 118 bool wxToggleBitmapButton::GetValue() const
 119 {
 120     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 121
 122     return GTK_TOGGLE_BUTTON(m_widget)->active;
 123 }
 124
 125 void wxToggleBitmapButton::SetLabel(const wxBitmap& label)
 126 {
 127     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 128
 129     m_bitmap = label;
 130     InvalidateBestSize();
 131
 132     OnSetBitmap();
 133 }
 134
 135 void wxToggleBitmapButton::OnSetBitmap()
 136 {
 137     if (!m_bitmap.Ok()) return;
 138
 139     GdkBitmap *mask = (GdkBitmap *) NULL;
 140     if (m_bitmap.GetMask()) mask = m_bitmap.GetMask()->GetBitmap();
 141
 142     GtkWidget *child = BUTTON_CHILD(m_widget);
 143     if (child == NULL)
 144     {
 145         // initial bitmap
 146         GtkWidget *pixmap = gtk_pixmap_new(m_bitmap.GetPixmap(), mask);
 147         gtk_widget_show(pixmap);
 148         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 149     }
 150     else
 151     {   // subsequent bitmaps
 152         GtkPixmap *g_pixmap = GTK_PIXMAP(child);
 153         gtk_pixmap_set(g_pixmap, m_bitmap.GetPixmap(), mask);
 154     }
 155 }
 156
 157 bool wxToggleBitmapButton::Enable(bool enable /*=true*/)
 158 {
 159     if (!wxControl::Enable(enable))
 160         return false;
 161
 162     gtk_widget_set_sensitive(BUTTON_CHILD(m_widget), enable);
 163
 164     return true;
 165 }
 166
 167 void wxToggleBitmapButton::DoApplyWidgetStyle(GtkRcStyle *style)
 168 {
 169     gtk_widget_modify_style(m_widget, style);
 170     gtk_widget_modify_style(BUTTON_CHILD(m_widget), style);
 171 }
 172
 173 bool wxToggleBitmapButton::IsOwnGtkWindow(GdkWindow *window)
 174 {
 175     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 176 }
 177
 178 void wxToggleBitmapButton::OnInternalIdle()
 179 {
 180     wxCursor cursor = m_cursor;
 181
 182     if (g_globalCursor.Ok())
 183         cursor = g_globalCursor;
 184
 185     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 186     if ( win && cursor.Ok() )
 187     {
 188       /* I now set the cursor the anew in every OnInternalIdle call
 189          as setting the cursor in a parent window also effects the
 190          windows above so that checking for the current cursor is
 191          not possible. */
 192
 193         gdk_window_set_cursor(win, cursor.GetCursor());
 194     }
 195
 196     if (wxUpdateUIEvent::CanUpdate(this))
 197         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 198 }
 199
 200
 201 // Get the "best" size for this control.
 202 wxSize wxToggleBitmapButton::DoGetBestSize() const
 203 {
 204     wxSize best;
 205
 206     if (m_bitmap.Ok())
 207     {
 208         int border = HasFlag(wxNO_BORDER) ? 4 : 10;
 209         best.x = m_bitmap.GetWidth()+border;
 210         best.y = m_bitmap.GetHeight()+border;
 211     }
 212     CacheBestSize(best);
 213     return best;
 214 }
 215
 216
 217 // static
 218 wxVisualAttributes
 219 wxToggleBitmapButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 220 {
 221     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 222 }
 223
 224
 225 // ------------------------------------------------------------------------
 226 // wxToggleButton
 227 // ------------------------------------------------------------------------
 228
 229 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
 230
 231 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
 232                             const wxString &label, const wxPoint &pos,
 233                             const wxSize &size, long style,
 234                             const wxValidator& validator,
 235                             const wxString &name)
 236 {
 237     m_needParent = true;
 238     m_acceptsFocus = true;
 239
 240     m_blockEvent = false;
 241
 242     if (!PreCreation(parent, pos, size) ||
 243         !CreateBase(parent, id, pos, size, style, validator, name )) {
 244         wxFAIL_MSG(wxT("wxToggleButton creation failed"));
 245         return false;
 246     }
 247
 248     wxControl::SetLabel(label);
 249
 250     // Create the gtk widget.
 251     m_widget = gtk_toggle_button_new_with_label( wxGTK_CONV( m_label ) );
 252
 253     gtk_signal_connect(GTK_OBJECT(m_widget), "clicked",
 254                        GTK_SIGNAL_FUNC(gtk_togglebutton_clicked_callback),
 255                        (gpointer *)this);
 256
 257     m_parent->DoAddChild(this);
 258
 259     PostCreation(size);
 260
 261     return true;
 262 }
 263
 264 // void SetValue(bool state)
 265 // Set the value of the toggle button.
 266 void wxToggleButton::SetValue(bool state)
 267 {
 268     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 269
 270     if (state == GetValue())
 271         return;
 272
 273     m_blockEvent = true;
 274
 275     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 276
 277     m_blockEvent = false;
 278 }
 279
 280 // bool GetValue() const
 281 // Get the value of the toggle button.
 282 bool wxToggleButton::GetValue() const
 283 {
 284     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 285
 286     return GTK_TOGGLE_BUTTON(m_widget)->active;
 287 }
 288
 289 void wxToggleButton::SetLabel(const wxString& label)
 290 {
 291     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 292
 293     wxControl::SetLabel(label);
 294
 295     gtk_label_set(GTK_LABEL(BUTTON_CHILD(m_widget)), wxGTK_CONV( GetLabel() ) );
 296 }
 297
 298 bool wxToggleButton::Enable(bool enable /*=true*/)
 299 {
 300     if (!wxControl::Enable(enable))
 301         return false;
 302
 303     gtk_widget_set_sensitive(BUTTON_CHILD(m_widget), enable);
 304
 305     return true;
 306 }
 307
 308 void wxToggleButton::DoApplyWidgetStyle(GtkRcStyle *style)
 309 {
 310     gtk_widget_modify_style(m_widget, style);
 311     gtk_widget_modify_style(BUTTON_CHILD(m_widget), style);
 312 }
 313
 314 bool wxToggleButton::IsOwnGtkWindow(GdkWindow *window)
 315 {
 316     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 317 }
 318
 319 void wxToggleButton::OnInternalIdle()
 320 {
 321     wxCursor cursor = m_cursor;
 322
 323     if (g_globalCursor.Ok())
 324         cursor = g_globalCursor;
 325
 326     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 327     if ( win && cursor.Ok() )
 328     {
 329       /* I now set the cursor the anew in every OnInternalIdle call
 330          as setting the cursor in a parent window also effects the
 331          windows above so that checking for the current cursor is
 332          not possible. */
 333
 334         gdk_window_set_cursor(win, cursor.GetCursor());
 335     }
 336
 337     if (wxUpdateUIEvent::CanUpdate(this))
 338         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 339 }
 340
 341
 342 // Get the "best" size for this control.
 343 wxSize wxToggleButton::DoGetBestSize() const
 344 {
 345     wxSize ret(wxControl::DoGetBestSize());
 346
 347     if (!HasFlag(wxBU_EXACTFIT))
 348     {
 349         if (ret.x < 80) ret.x = 80;
 350     }
 351
 352     CacheBestSize(ret);
 353     return ret;
 354 }
 355
 356 // static
 357 wxVisualAttributes
 358 wxToggleButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 359 {
 360     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 361 }
 362
 363 #endif // wxUSE_TOGGLEBTN