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