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 #include "wx/tglbtn.h"
  14 #include "wx/button.h"
  15
  16 #if wxUSE_TOGGLEBTN
  17
  18 #include "wx/gtk/private.h"
  19
  20 extern void wxapp_install_idle_handler();
  21 extern bool g_isIdle;
  22 extern bool      g_blockEventsOnDrag;
  23 extern wxCursor   g_globalCursor;
  24 extern wxWindowGTK *g_delayedFocus;
  25
  26 static void gtk_togglebutton_clicked_callback(GtkWidget *WXUNUSED(widget), wxToggleButton *cb)
  27 {
  28    if (g_isIdle)
  29       wxapp_install_idle_handler();
  30
  31    if (!cb->m_hasVMT || g_blockEventsOnDrag)
  32       return;
  33
  34    if (cb->m_blockEvent) return;
  35
  36    // Generate a wx event.
  37    wxCommandEvent event(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, cb->GetId());
  38    event.SetInt(cb->GetValue());
  39    event.SetEventObject(cb);
  40    cb->GetEventHandler()->ProcessEvent(event);
  41 }
  42
  43 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
  44 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED)
  45
  46 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
  47                             const wxString &label, const wxPoint &pos,
  48                             const wxSize &size, long style,
  49                             const wxValidator& validator,
  50                             const wxString &name)
  51 {
  52    m_needParent = TRUE;
  53    m_acceptsFocus = TRUE;
  54
  55    m_blockEvent = FALSE;
  56
  57    if (!PreCreation(parent, pos, size) ||
  58        !CreateBase(parent, id, pos, size, style, validator, name )) {
  59       wxFAIL_MSG(wxT("wxToggleButton creation failed"));
  60       return FALSE;
  61    }
  62
  63    wxControl::SetLabel(label);
  64
  65    // Create the gtk widget.
  66    m_widget = gtk_toggle_button_new_with_label( wxGTK_CONV( m_label ) );
  67
  68    gtk_signal_connect(GTK_OBJECT(m_widget), "clicked",
  69                       GTK_SIGNAL_FUNC(gtk_togglebutton_clicked_callback),
  70                       (gpointer *)this);
  71
  72    m_parent->DoAddChild(this);
  73
  74    PostCreation();
  75
  76    SetFont(parent->GetFont());
  77
  78    wxSize size_best(DoGetBestSize());
  79    wxSize new_size(size);
  80    if (new_size.x == -1)
  81       new_size.x = size_best.x;
  82    if (new_size.y == -1)
  83       new_size.y = size_best.y;
  84    if ((new_size.x != size.x) || (new_size.y != size.y))
  85       SetSize(new_size.x, new_size.y);
  86
  87    SetBackgroundColour(parent->GetBackgroundColour());
  88    SetForegroundColour(parent->GetForegroundColour());
  89
  90    Show(TRUE);
  91
  92    return TRUE;
  93 }
  94
  95 // void SetValue(bool state)
  96 // Set the value of the toggle button.
  97 void wxToggleButton::SetValue(bool state)
  98 {
  99    wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 100
 101    if (state == GetValue())
 102       return;
 103
 104    m_blockEvent = TRUE;
 105
 106    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 107
 108    m_blockEvent = FALSE;
 109 }
 110
 111 // bool GetValue() const
 112 // Get the value of the toggle button.
 113 bool wxToggleButton::GetValue() const
 114 {
 115    wxCHECK_MSG(m_widget != NULL, FALSE, wxT("invalid toggle button"));
 116
 117    return GTK_TOGGLE_BUTTON(m_widget)->active;
 118 }
 119
 120 void wxToggleButton::SetLabel(const wxString& label)
 121 {
 122     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 123
 124     wxControl::SetLabel(label);
 125
 126     gtk_label_set(GTK_LABEL(BUTTON_CHILD(m_widget)), wxGTK_CONV( GetLabel() ) );
 127 }
 128
 129 bool wxToggleButton::Enable(bool enable /*=TRUE*/)
 130 {
 131     if (!wxControl::Enable(enable))
 132         return FALSE;
 133
 134     gtk_widget_set_sensitive(BUTTON_CHILD(m_widget), enable);
 135
 136     return TRUE;
 137 }
 138
 139 void wxToggleButton::ApplyWidgetStyle()
 140 {
 141     SetWidgetStyle();
 142     gtk_widget_set_style(m_widget, m_widgetStyle);
 143     gtk_widget_set_style(BUTTON_CHILD(m_widget), m_widgetStyle);
 144 }
 145
 146 bool wxToggleButton::IsOwnGtkWindow(GdkWindow *window)
 147 {
 148     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 149 }
 150
 151 void wxToggleButton::OnInternalIdle()
 152 {
 153     wxCursor cursor = m_cursor;
 154
 155     if (g_globalCursor.Ok())
 156         cursor = g_globalCursor;
 157
 158     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 159     if ( win && cursor.Ok() )
 160     {
 161       /* I now set the cursor the anew in every OnInternalIdle call
 162          as setting the cursor in a parent window also effects the
 163          windows above so that checking for the current cursor is
 164          not possible. */
 165
 166         gdk_window_set_cursor(win, cursor.GetCursor());
 167     }
 168
 169     if (wxUpdateUIEvent::CanUpdate())
 170         UpdateWindowUI();
 171 }
 172
 173 // wxSize DoGetBestSize() const
 174 // Get the "best" size for this control.
 175 wxSize wxToggleButton::DoGetBestSize() const
 176 {
 177     wxSize ret(wxControl::DoGetBestSize());
 178
 179     if (!HasFlag(wxBU_EXACTFIT))
 180     {
 181         if (ret.x < 80) ret.x = 80;
 182     }
 183
 184
 185    return ret;
 186 }
 187
 188 #endif // wxUSE_TOGGLEBTN
 189