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         wxSize newSize = size;
  83         int border = (style & wxNO_BORDER) ? 4 : 10;
  84         if (newSize.x == -1)
  85             newSize.x = m_bitmap.GetWidth()+border;
  86         if (newSize.y == -1)
  87             newSize.y = m_bitmap.GetHeight()+border;
  88         SetSize( newSize.x, newSize.y );
  89         OnSetBitmap();
  90     }
  91
  92     gtk_signal_connect(GTK_OBJECT(m_widget), "clicked",
  93                       GTK_SIGNAL_FUNC(gtk_togglebutton_clicked_callback),
  94                       (gpointer *)this);
  95
  96     m_parent->DoAddChild(this);
  97
  98     PostCreation();
  99     InheritAttributes();
 100
 101     Show( TRUE );
 102
 103     return TRUE;
 104 }
 105
 106 // void SetValue(bool state)
 107 // Set the value of the toggle button.
 108 void wxToggleBitmapButton::SetValue(bool state)
 109 {
 110    wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 111
 112    if (state == GetValue())
 113       return;
 114
 115    m_blockEvent = TRUE;
 116
 117    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 118
 119    m_blockEvent = FALSE;
 120 }
 121
 122 // bool GetValue() const
 123 // Get the value of the toggle button.
 124 bool wxToggleBitmapButton::GetValue() const
 125 {
 126    wxCHECK_MSG(m_widget != NULL, FALSE, wxT("invalid toggle button"));
 127
 128    return GTK_TOGGLE_BUTTON(m_widget)->active;
 129 }
 130
 131 void wxToggleBitmapButton::SetLabel(const wxBitmap& label)
 132 {
 133     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 134
 135     m_bitmap = label;
 136
 137     OnSetBitmap();
 138 }
 139
 140 void wxToggleBitmapButton::OnSetBitmap()
 141 {
 142     if (!m_bitmap.Ok()) return;
 143
 144     GdkBitmap *mask = (GdkBitmap *) NULL;
 145     if (m_bitmap.GetMask()) mask = m_bitmap.GetMask()->GetBitmap();
 146
 147     GtkWidget *child = BUTTON_CHILD(m_widget);
 148     if (child == NULL)
 149     {
 150         // initial bitmap
 151         GtkWidget *pixmap = gtk_pixmap_new(m_bitmap.GetPixmap(), mask);
 152         gtk_widget_show(pixmap);
 153         gtk_container_add(GTK_CONTAINER(m_widget), pixmap);
 154     }
 155     else
 156     {   // subsequent bitmaps
 157         GtkPixmap *g_pixmap = GTK_PIXMAP(child);
 158         gtk_pixmap_set(g_pixmap, m_bitmap.GetPixmap(), mask);
 159     }
 160 }
 161
 162 bool wxToggleBitmapButton::Enable(bool enable /*=TRUE*/)
 163 {
 164     if (!wxControl::Enable(enable))
 165         return FALSE;
 166
 167     gtk_widget_set_sensitive(BUTTON_CHILD(m_widget), enable);
 168
 169     return TRUE;
 170 }
 171
 172 void wxToggleBitmapButton::ApplyWidgetStyle()
 173 {
 174     SetWidgetStyle();
 175     gtk_widget_set_style(m_widget, m_widgetStyle);
 176     gtk_widget_set_style(BUTTON_CHILD(m_widget), m_widgetStyle);
 177 }
 178
 179 bool wxToggleBitmapButton::IsOwnGtkWindow(GdkWindow *window)
 180 {
 181     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 182 }
 183
 184 void wxToggleBitmapButton::OnInternalIdle()
 185 {
 186     wxCursor cursor = m_cursor;
 187
 188     if (g_globalCursor.Ok())
 189         cursor = g_globalCursor;
 190
 191     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 192     if ( win && cursor.Ok() )
 193     {
 194       /* I now set the cursor the anew in every OnInternalIdle call
 195          as setting the cursor in a parent window also effects the
 196          windows above so that checking for the current cursor is
 197          not possible. */
 198
 199         gdk_window_set_cursor(win, cursor.GetCursor());
 200     }
 201
 202     if (wxUpdateUIEvent::CanUpdate(this))
 203         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 204 }
 205
 206 // wxSize DoGetBestSize() const
 207 // Get the "best" size for this control.
 208 wxSize wxToggleBitmapButton::DoGetBestSize() const
 209 {
 210     wxSize ret(wxControl::DoGetBestSize());
 211
 212     if (!HasFlag(wxBU_EXACTFIT))
 213     {
 214         if (ret.x < 80) ret.x = 80;
 215     }
 216
 217
 218    return ret;
 219 }
 220 // ------------------------------------------------------------------------
 221 // wxToggleButton
 222 // ------------------------------------------------------------------------
 223
 224 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
 225
 226 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
 227                             const wxString &label, const wxPoint &pos,
 228                             const wxSize &size, long style,
 229                             const wxValidator& validator,
 230                             const wxString &name)
 231 {
 232    m_needParent = TRUE;
 233    m_acceptsFocus = TRUE;
 234
 235    m_blockEvent = FALSE;
 236
 237    if (!PreCreation(parent, pos, size) ||
 238        !CreateBase(parent, id, pos, size, style, validator, name )) {
 239       wxFAIL_MSG(wxT("wxToggleButton creation failed"));
 240       return FALSE;
 241    }
 242
 243    wxControl::SetLabel(label);
 244
 245    // Create the gtk widget.
 246    m_widget = gtk_toggle_button_new_with_label( wxGTK_CONV( m_label ) );
 247
 248    gtk_signal_connect(GTK_OBJECT(m_widget), "clicked",
 249                       GTK_SIGNAL_FUNC(gtk_togglebutton_clicked_callback),
 250                       (gpointer *)this);
 251
 252    m_parent->DoAddChild(this);
 253
 254    PostCreation();
 255    InheritAttributes();
 256
 257    wxSize size_best(DoGetBestSize());
 258    wxSize new_size(size);
 259    if (new_size.x == -1)
 260       new_size.x = size_best.x;
 261    if (new_size.y == -1)
 262       new_size.y = size_best.y;
 263    if ((new_size.x != size.x) || (new_size.y != size.y))
 264       SetSize(new_size.x, new_size.y);
 265
 266    Show(TRUE);
 267
 268    return TRUE;
 269 }
 270
 271 // void SetValue(bool state)
 272 // Set the value of the toggle button.
 273 void wxToggleButton::SetValue(bool state)
 274 {
 275    wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 276
 277    if (state == GetValue())
 278       return;
 279
 280    m_blockEvent = TRUE;
 281
 282    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 283
 284    m_blockEvent = FALSE;
 285 }
 286
 287 // bool GetValue() const
 288 // Get the value of the toggle button.
 289 bool wxToggleButton::GetValue() const
 290 {
 291    wxCHECK_MSG(m_widget != NULL, FALSE, wxT("invalid toggle button"));
 292
 293    return GTK_TOGGLE_BUTTON(m_widget)->active;
 294 }
 295
 296 void wxToggleButton::SetLabel(const wxString& label)
 297 {
 298     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 299
 300     wxControl::SetLabel(label);
 301
 302     gtk_label_set(GTK_LABEL(BUTTON_CHILD(m_widget)), wxGTK_CONV( GetLabel() ) );
 303 }
 304
 305 bool wxToggleButton::Enable(bool enable /*=TRUE*/)
 306 {
 307     if (!wxControl::Enable(enable))
 308         return FALSE;
 309
 310     gtk_widget_set_sensitive(BUTTON_CHILD(m_widget), enable);
 311
 312     return TRUE;
 313 }
 314
 315 void wxToggleButton::ApplyWidgetStyle()
 316 {
 317     SetWidgetStyle();
 318     gtk_widget_set_style(m_widget, m_widgetStyle);
 319     gtk_widget_set_style(BUTTON_CHILD(m_widget), m_widgetStyle);
 320 }
 321
 322 bool wxToggleButton::IsOwnGtkWindow(GdkWindow *window)
 323 {
 324     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 325 }
 326
 327 void wxToggleButton::OnInternalIdle()
 328 {
 329     wxCursor cursor = m_cursor;
 330
 331     if (g_globalCursor.Ok())
 332         cursor = g_globalCursor;
 333
 334     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 335     if ( win && cursor.Ok() )
 336     {
 337       /* I now set the cursor the anew in every OnInternalIdle call
 338          as setting the cursor in a parent window also effects the
 339          windows above so that checking for the current cursor is
 340          not possible. */
 341
 342         gdk_window_set_cursor(win, cursor.GetCursor());
 343     }
 344
 345     if (wxUpdateUIEvent::CanUpdate(this))
 346         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 347 }
 348
 349 // wxSize DoGetBestSize() const
 350 // Get the "best" size for this control.
 351 wxSize wxToggleButton::DoGetBestSize() const
 352 {
 353     wxSize ret(wxControl::DoGetBestSize());
 354
 355     if (!HasFlag(wxBU_EXACTFIT))
 356     {
 357         if (ret.x < 80) ret.x = 80;
 358     }
 359
 360
 361    return ret;
 362 }
 363
 364 #endif // wxUSE_TOGGLEBTN
 365