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
  25 // void gtk_togglebutton_clicked_callback(GtkWidget *widget, wxToggleButton *cb)
  26 // Callback function given to gtk.
  27 static void gtk_togglebutton_clicked_callback(GtkWidget *WXUNUSED(widget), wxToggleButton *cb)
  28 {
  29    if (g_isIdle)
  30       wxapp_install_idle_handler();
  31
  32    if (!cb->m_hasVMT || g_blockEventsOnDrag)
  33       return;
  34
  35    if (cb->m_blockEvent) return;
  36
  37    // Generate a wx event.
  38    wxCommandEvent event(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, cb->GetId());
  39    event.SetInt(cb->GetValue());
  40    event.SetEventObject(cb);
  41    cb->GetEventHandler()->ProcessEvent(event);
  42 }
  43
  44 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
  45 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED)
  46
  47 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
  48                             const wxString &label, const wxPoint &pos,
  49                             const wxSize &size, long style,
  50                             const wxValidator& validator,
  51                             const wxString &name)
  52 {
  53    m_needParent = TRUE;
  54    m_acceptsFocus = TRUE;
  55
  56    m_blockEvent = FALSE;
  57
  58    if (!PreCreation(parent, pos, size) ||
  59        !CreateBase(parent, id, pos, size, style, validator, name )) {
  60       wxFAIL_MSG(wxT("wxToggleButton creation failed"));
  61       return FALSE;
  62    }
  63
  64    wxControl::SetLabel(label);
  65
  66    // Create the gtk widget.
  67    m_widget = gtk_toggle_button_new_with_label(m_label.mbc_str());
  68
  69    gtk_signal_connect(GTK_OBJECT(m_widget), "clicked",
  70                       GTK_SIGNAL_FUNC(gtk_togglebutton_clicked_callback),
  71                       (gpointer *)this);
  72
  73    m_parent->DoAddChild(this);
  74
  75    PostCreation();
  76
  77    SetFont(parent->GetFont());
  78
  79    wxSize size_best(DoGetBestSize());
  80    wxSize new_size(size);
  81    if (new_size.x == -1)
  82       new_size.x = size_best.x;
  83    if (new_size.y == -1)
  84       new_size.y = size_best.y;
  85    if ((new_size.x != size.x) || (new_size.y != size.y))
  86       SetSize(new_size.x, new_size.y);
  87
  88    SetBackgroundColour(parent->GetBackgroundColour());
  89    SetForegroundColour(parent->GetForegroundColour());
  90
  91    Show(TRUE);
  92
  93    return TRUE;
  94 }
  95
  96 // void SetValue(bool state)
  97 // Set the value of the toggle button.
  98 void wxToggleButton::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 wxToggleButton::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 wxToggleButton::SetLabel(const wxString& label)
 122 {
 123     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 124
 125     wxControl::SetLabel(label);
 126
 127     gtk_label_set(GTK_LABEL(BUTTON_CHILD(m_widget)), GetLabel().mbc_str());
 128 }
 129
 130 bool wxToggleButton::Enable(bool enable /*=TRUE*/)
 131 {
 132     if (!wxControl::Enable(enable))
 133         return FALSE;
 134
 135     gtk_widget_set_sensitive(BUTTON_CHILD(m_widget), enable);
 136
 137     return TRUE;
 138 }
 139
 140 void wxToggleButton::ApplyWidgetStyle()
 141 {
 142     SetWidgetStyle();
 143     gtk_widget_set_style(m_widget, m_widgetStyle);
 144     gtk_widget_set_style(BUTTON_CHILD(m_widget), m_widgetStyle);
 145 }
 146
 147 bool wxToggleButton::IsOwnGtkWindow(GdkWindow *window)
 148 {
 149     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 150 }
 151
 152 void wxToggleButton::OnInternalIdle()
 153 {
 154     wxCursor cursor = m_cursor;
 155
 156     if (g_globalCursor.Ok())
 157         cursor = g_globalCursor;
 158
 159     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 160     if ( win && cursor.Ok() )
 161     {
 162       /* I now set the cursor the anew in every OnInternalIdle call
 163          as setting the cursor in a parent window also effects the
 164          windows above so that checking for the current cursor is
 165          not possible. */
 166
 167         gdk_window_set_cursor(win, cursor.GetCursor());
 168     }
 169
 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