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 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
  47 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED)
  48
  49 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
  50                             const wxString &label, const wxPoint &pos,
  51                             const wxSize &size, long style,
  52                             const wxValidator& validator,
  53                             const wxString &name)
  54 {
  55    m_needParent = TRUE;
  56    m_acceptsFocus = TRUE;
  57
  58    m_blockEvent = FALSE;
  59
  60    if (!PreCreation(parent, pos, size) ||
  61        !CreateBase(parent, id, pos, size, style, validator, name )) {
  62       wxFAIL_MSG(wxT("wxToggleButton creation failed"));
  63       return FALSE;
  64    }
  65
  66    wxControl::SetLabel(label);
  67
  68    // Create the gtk widget.
  69    m_widget = gtk_toggle_button_new_with_label( wxGTK_CONV( m_label ) );
  70
  71    gtk_signal_connect(GTK_OBJECT(m_widget), "clicked",
  72                       GTK_SIGNAL_FUNC(gtk_togglebutton_clicked_callback),
  73                       (gpointer *)this);
  74
  75    m_parent->DoAddChild(this);
  76
  77    PostCreation();
  78
  79    SetFont(parent->GetFont());
  80
  81    wxSize size_best(DoGetBestSize());
  82    wxSize new_size(size);
  83    if (new_size.x == -1)
  84       new_size.x = size_best.x;
  85    if (new_size.y == -1)
  86       new_size.y = size_best.y;
  87    if ((new_size.x != size.x) || (new_size.y != size.y))
  88       SetSize(new_size.x, new_size.y);
  89
  90    SetBackgroundColour(parent->GetBackgroundColour());
  91    SetForegroundColour(parent->GetForegroundColour());
  92
  93    Show(TRUE);
  94
  95    return TRUE;
  96 }
  97
  98 // void SetValue(bool state)
  99 // Set the value of the toggle button.
 100 void wxToggleButton::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 wxToggleButton::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 wxToggleButton::SetLabel(const wxString& label)
 124 {
 125     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 126
 127     wxControl::SetLabel(label);
 128
 129     gtk_label_set(GTK_LABEL(BUTTON_CHILD(m_widget)), wxGTK_CONV( GetLabel() ) );
 130 }
 131
 132 bool wxToggleButton::Enable(bool enable /*=TRUE*/)
 133 {
 134     if (!wxControl::Enable(enable))
 135         return FALSE;
 136
 137     gtk_widget_set_sensitive(BUTTON_CHILD(m_widget), enable);
 138
 139     return TRUE;
 140 }
 141
 142 void wxToggleButton::ApplyWidgetStyle()
 143 {
 144     SetWidgetStyle();
 145     gtk_widget_set_style(m_widget, m_widgetStyle);
 146     gtk_widget_set_style(BUTTON_CHILD(m_widget), m_widgetStyle);
 147 }
 148
 149 bool wxToggleButton::IsOwnGtkWindow(GdkWindow *window)
 150 {
 151     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 152 }
 153
 154 void wxToggleButton::OnInternalIdle()
 155 {
 156     wxCursor cursor = m_cursor;
 157
 158     if (g_globalCursor.Ok())
 159         cursor = g_globalCursor;
 160
 161     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 162     if ( win && cursor.Ok() )
 163     {
 164       /* I now set the cursor the anew in every OnInternalIdle call
 165          as setting the cursor in a parent window also effects the
 166          windows above so that checking for the current cursor is
 167          not possible. */
 168
 169         gdk_window_set_cursor(win, cursor.GetCursor());
 170     }
 171
 172     if (wxUpdateUIEvent::CanUpdate(this))
 173         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 174 }
 175
 176 // wxSize DoGetBestSize() const
 177 // Get the "best" size for this control.
 178 wxSize wxToggleButton::DoGetBestSize() const
 179 {
 180     wxSize ret(wxControl::DoGetBestSize());
 181
 182     if (!HasFlag(wxBU_EXACTFIT))
 183     {
 184         if (ret.x < 80) ret.x = 80;
 185     }
 186
 187
 188    return ret;
 189 }
 190
 191 #endif // wxUSE_TOGGLEBTN
 192