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 <gdk/gdk.h>
  19 #include <gtk/gtk.h>
  20
  21 extern void wxapp_install_idle_handler();
  22 extern bool g_isIdle;
  23 extern bool      g_blockEventsOnDrag;
  24 extern wxCursor   g_globalCursor;
  25
  26 // void gtk_togglebutton_clicked_callback(GtkWidget *widget, wxToggleButton *cb)
  27 // Callback function given to gtk.
  28 static void gtk_togglebutton_clicked_callback(GtkWidget *WXUNUSED(widget), wxToggleButton *cb)
  29 {
  30    if (g_isIdle)
  31       wxapp_install_idle_handler();
  32
  33    if (!cb->m_hasVMT || g_blockEventsOnDrag)
  34       return;
  35
  36    if (cb->m_blockEvent) return;
  37
  38    // Generate a wx event.
  39    wxCommandEvent event(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, cb->GetId());
  40    event.SetInt(cb->GetValue());
  41    event.SetEventObject(cb);
  42    cb->GetEventHandler()->ProcessEvent(event);
  43 }
  44
  45 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
  46 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED)
  47
  48 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
  49                             const wxString &label, const wxPoint &pos,
  50                             const wxSize &size, long style,
  51                             const wxValidator& validator,
  52                             const wxString &name)
  53 {
  54    m_needParent = TRUE;
  55    m_acceptsFocus = TRUE;
  56
  57    m_blockEvent = FALSE;
  58
  59    if (!PreCreation(parent, pos, size) ||
  60        !CreateBase(parent, id, pos, size, style, validator, name )) {
  61       wxFAIL_MSG(wxT("wxToggleButton creation failed"));
  62       return FALSE;
  63    }
  64
  65    wxControl::SetLabel(label);
  66
  67    // Create the gtk widget.
  68    m_widget = gtk_toggle_button_new_with_label(m_label.mbc_str());
  69
  70    gtk_signal_connect(GTK_OBJECT(m_widget), "clicked",
  71                       GTK_SIGNAL_FUNC(gtk_togglebutton_clicked_callback),
  72                       (gpointer *)this);
  73
  74    m_parent->DoAddChild(this);
  75
  76    PostCreation();
  77
  78    SetFont(parent->GetFont());
  79
  80    wxSize size_best(DoGetBestSize());
  81    wxSize new_size(size);
  82    if (new_size.x == -1)
  83       new_size.x = size_best.x;
  84    if (new_size.y == -1)
  85       new_size.y = size_best.y;
  86    if ((new_size.x != size.x) || (new_size.y != size.y))
  87       SetSize(new_size.x, new_size.y);
  88
  89    SetBackgroundColour(parent->GetBackgroundColour());
  90    SetForegroundColour(parent->GetForegroundColour());
  91
  92    Show(TRUE);
  93
  94    return TRUE;
  95 }
  96
  97 // void SetValue(bool state)
  98 // Set the value of the toggle button.
  99 void wxToggleButton::SetValue(bool state)
 100 {
 101    wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 102
 103    if (state == GetValue())
 104       return;
 105
 106    m_blockEvent = TRUE;
 107
 108    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 109
 110    m_blockEvent = FALSE;
 111 }
 112
 113 // bool GetValue() const
 114 // Get the value of the toggle button.
 115 bool wxToggleButton::GetValue() const
 116 {
 117    wxCHECK_MSG(m_widget != NULL, FALSE, wxT("invalid toggle button"));
 118
 119    return GTK_TOGGLE_BUTTON(m_widget)->active;
 120 }
 121
 122 void wxToggleButton::SetLabel(const wxString& label)
 123 {
 124     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 125
 126     wxControl::SetLabel(label);
 127
 128     gtk_label_set(GTK_LABEL(GTK_BUTTON(m_widget)->child),
 129                  GetLabel().mbc_str());
 130 }
 131
 132 bool wxToggleButton::Enable(bool enable /*=TRUE*/)
 133 {
 134     if (!wxControl::Enable(enable))
 135         return FALSE;
 136
 137     gtk_widget_set_sensitive(GTK_BUTTON(m_widget)->child, 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(GTK_BUTTON(m_widget)->child, m_widgetStyle);
 147 }
 148
 149 bool wxToggleButton::IsOwnGtkWindow(GdkWindow *window)
 150 {
 151     return (window == GTK_TOGGLE_BUTTON(m_widget)->event_window);
 152 }
 153
 154 void wxToggleButton::OnInternalIdle()
 155 {
 156     wxCursor cursor = m_cursor;
 157
 158     if (g_globalCursor.Ok())
 159         cursor = g_globalCursor;
 160
 161     if (GTK_TOGGLE_BUTTON(m_widget)->event_window && cursor.Ok()) {
 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(GTK_TOGGLE_BUTTON(m_widget)->event_window,
 168                             cursor.GetCursor());
 169     }
 170
 171     UpdateWindowUI();
 172 }
 173
 174 // wxSize DoGetBestSize() const
 175 // Get the "best" size for this control.
 176 wxSize wxToggleButton::DoGetBestSize() const
 177 {
 178     wxSize ret(wxControl::DoGetBestSize());
 179
 180     if (!HasFlag(wxBU_EXACTFIT))
 181     {
 182         if (ret.x < 80) ret.x = 80;
 183     }
 184
 185
 186    return ret;
 187 }
 188
 189 #endif // wxUSE_TOGGLEBTN
 190