src/gtk/tglbtn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/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 #include "wx/tglbtn.h"
  17 #include "wx/button.h"
  18
  19 #if wxUSE_TOGGLEBTN
  20
  21 #include "wx/gtk/private.h"
  22
  23 extern void wxapp_install_idle_handler();
  24 extern bool g_isIdle;
  25 extern bool      g_blockEventsOnDrag;
  26 extern wxCursor   g_globalCursor;
  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     m_bitmap = label;
  74
  75     // Create the gtk widget.
  76     m_widget = gtk_toggle_button_new();
  77
  78     if (style & wxNO_BORDER)
  79        gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );
  80
  81     if (m_bitmap.Ok())
  82     {
  83         OnSetBitmap();
  84     }
  85
  86     g_signal_connect (m_widget, "clicked",
  87                       G_CALLBACK (gtk_togglebutton_clicked_callback),
  88                       this);
  89
  90     m_parent->DoAddChild(this);
  91
  92     PostCreation(size);
  93
  94     return true;
  95 }
  96
  97 // void SetValue(bool state)
  98 // Set the value of the toggle button.
  99 void wxToggleBitmapButton::SetValue(bool state)
 100 {
 101     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 102
 103     if (state == GetValue())
 104         return;
 105
 106     m_blockEvent = true;
 107
 108     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 109
 110     m_blockEvent = false;
 111 }
 112
 113 // bool GetValue() const
 114 // Get the value of the toggle button.
 115 bool wxToggleBitmapButton::GetValue() const
 116 {
 117     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 118
 119     return GTK_TOGGLE_BUTTON(m_widget)->active;
 120 }
 121
 122 void wxToggleBitmapButton::SetLabel(const wxBitmap& label)
 123 {
 124     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 125
 126     m_bitmap = label;
 127     InvalidateBestSize();
 128
 129     OnSetBitmap();
 130 }
 131
 132 void wxToggleBitmapButton::OnSetBitmap()
 133 {
 134     if (!m_bitmap.Ok()) return;
 135
 136     GdkBitmap *mask = (GdkBitmap *) NULL;
 137     if (m_bitmap.GetMask()) mask = m_bitmap.GetMask()->GetBitmap();
 138
 139     GtkWidget *child = BUTTON_CHILD(m_widget);
 140     if (child == NULL)
 141     {
 142         // initial bitmap
 143         GtkWidget *pixmap = gtk_pixmap_new(m_bitmap.GetPixmap(), mask);
 144         gtk_widget_show(pixmap);
 145         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 146     }
 147     else
 148     {   // subsequent bitmaps
 149         GtkPixmap *g_pixmap = GTK_PIXMAP(child);
 150         gtk_pixmap_set(g_pixmap, m_bitmap.GetPixmap(), mask);
 151     }
 152 }
 153
 154 bool wxToggleBitmapButton::Enable(bool enable /*=true*/)
 155 {
 156     if (!wxControl::Enable(enable))
 157         return false;
 158
 159     gtk_widget_set_sensitive(BUTTON_CHILD(m_widget), enable);
 160
 161     return true;
 162 }
 163
 164 void wxToggleBitmapButton::DoApplyWidgetStyle(GtkRcStyle *style)
 165 {
 166     gtk_widget_modify_style(m_widget, style);
 167     gtk_widget_modify_style(BUTTON_CHILD(m_widget), style);
 168 }
 169
 170 bool wxToggleBitmapButton::IsOwnGtkWindow(GdkWindow *window)
 171 {
 172     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 173 }
 174
 175 void wxToggleBitmapButton::OnInternalIdle()
 176 {
 177     wxCursor cursor = m_cursor;
 178
 179     if (g_globalCursor.Ok())
 180         cursor = g_globalCursor;
 181
 182     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 183     if ( win && cursor.Ok() )
 184     {
 185       /* I now set the cursor the anew in every OnInternalIdle call
 186          as setting the cursor in a parent window also effects the
 187          windows above so that checking for the current cursor is
 188          not possible. */
 189
 190         gdk_window_set_cursor(win, cursor.GetCursor());
 191     }
 192
 193     if (wxUpdateUIEvent::CanUpdate(this))
 194         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 195 }
 196
 197
 198 // Get the "best" size for this control.
 199 wxSize wxToggleBitmapButton::DoGetBestSize() const
 200 {
 201     wxSize best;
 202
 203     if (m_bitmap.Ok())
 204     {
 205         int border = HasFlag(wxNO_BORDER) ? 4 : 10;
 206         best.x = m_bitmap.GetWidth()+border;
 207         best.y = m_bitmap.GetHeight()+border;
 208     }
 209     CacheBestSize(best);
 210     return best;
 211 }
 212
 213
 214 // static
 215 wxVisualAttributes
 216 wxToggleBitmapButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 217 {
 218     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 219 }
 220
 221
 222 // ------------------------------------------------------------------------
 223 // wxToggleButton
 224 // ------------------------------------------------------------------------
 225
 226 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
 227
 228 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
 229                             const wxString &label, const wxPoint &pos,
 230                             const wxSize &size, long style,
 231                             const wxValidator& validator,
 232                             const wxString &name)
 233 {
 234     m_needParent = true;
 235     m_acceptsFocus = true;
 236
 237     m_blockEvent = false;
 238
 239     if (!PreCreation(parent, pos, size) ||
 240         !CreateBase(parent, id, pos, size, style, validator, name )) {
 241         wxFAIL_MSG(wxT("wxToggleButton creation failed"));
 242         return false;
 243     }
 244
 245     wxControl::SetLabel(label);
 246
 247     // Create the gtk widget.
 248     m_widget = gtk_toggle_button_new_with_label( wxGTK_CONV( m_label ) );
 249
 250     g_signal_connect (m_widget, "clicked",
 251                       G_CALLBACK (gtk_togglebutton_clicked_callback),
 252                       this);
 253
 254     m_parent->DoAddChild(this);
 255
 256     PostCreation(size);
 257
 258     return true;
 259 }
 260
 261 // void SetValue(bool state)
 262 // Set the value of the toggle button.
 263 void wxToggleButton::SetValue(bool state)
 264 {
 265     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 266
 267     if (state == GetValue())
 268         return;
 269
 270     m_blockEvent = true;
 271
 272     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 273
 274     m_blockEvent = false;
 275 }
 276
 277 // bool GetValue() const
 278 // Get the value of the toggle button.
 279 bool wxToggleButton::GetValue() const
 280 {
 281     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 282
 283     return GTK_TOGGLE_BUTTON(m_widget)->active;
 284 }
 285
 286 void wxToggleButton::SetLabel(const wxString& label)
 287 {
 288     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 289
 290     wxControl::SetLabel(label);
 291
 292     gtk_label_set(GTK_LABEL(BUTTON_CHILD(m_widget)), wxGTK_CONV( GetLabel() ) );
 293 }
 294
 295 bool wxToggleButton::Enable(bool enable /*=true*/)
 296 {
 297     if (!wxControl::Enable(enable))
 298         return false;
 299
 300     gtk_widget_set_sensitive(BUTTON_CHILD(m_widget), enable);
 301
 302     return true;
 303 }
 304
 305 void wxToggleButton::DoApplyWidgetStyle(GtkRcStyle *style)
 306 {
 307     gtk_widget_modify_style(m_widget, style);
 308     gtk_widget_modify_style(BUTTON_CHILD(m_widget), style);
 309 }
 310
 311 bool wxToggleButton::IsOwnGtkWindow(GdkWindow *window)
 312 {
 313     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 314 }
 315
 316 void wxToggleButton::OnInternalIdle()
 317 {
 318     wxCursor cursor = m_cursor;
 319
 320     if (g_globalCursor.Ok())
 321         cursor = g_globalCursor;
 322
 323     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 324     if ( win && cursor.Ok() )
 325     {
 326       /* I now set the cursor the anew in every OnInternalIdle call
 327          as setting the cursor in a parent window also effects the
 328          windows above so that checking for the current cursor is
 329          not possible. */
 330
 331         gdk_window_set_cursor(win, cursor.GetCursor());
 332     }
 333
 334     if (wxUpdateUIEvent::CanUpdate(this))
 335         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 336 }
 337
 338
 339 // Get the "best" size for this control.
 340 wxSize wxToggleButton::DoGetBestSize() const
 341 {
 342     wxSize ret(wxControl::DoGetBestSize());
 343
 344     if (!HasFlag(wxBU_EXACTFIT))
 345     {
 346         if (ret.x < 80) ret.x = 80;
 347     }
 348
 349     CacheBestSize(ret);
 350     return ret;
 351 }
 352
 353 // static
 354 wxVisualAttributes
 355 wxToggleButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 356 {
 357     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new);
 358 }
 359
 360 #endif // wxUSE_TOGGLEBTN
 361