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