src/gtk/tglbtn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/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 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 // For compilers that support precompilation, includes "wx.h".
  14 #include "wx/wxprec.h"
  15
  16 #if wxUSE_TOGGLEBTN
  17
  18 #include "wx/tglbtn.h"
  19
  20 #ifndef WX_PRECOMP
  21     #include "wx/button.h"
  22 #endif
  23
  24 #include <gtk/gtk.h>
  25 #include "wx/gtk/private.h"
  26
  27 extern bool      g_blockEventsOnDrag;
  28
  29 extern "C" {
  30 static void gtk_togglebutton_clicked_callback(GtkWidget *WXUNUSED(widget), wxToggleButton *cb)
  31 {
  32     if (g_blockEventsOnDrag)
  33         return;
  34
  35     // Generate a wx event.
  36     wxCommandEvent event(wxEVT_TOGGLEBUTTON, cb->GetId());
  37     event.SetInt(cb->GetValue());
  38     event.SetEventObject(cb);
  39     cb->HandleWindowEvent(event);
  40 }
  41 }
  42
  43 wxDEFINE_EVENT( wxEVT_TOGGLEBUTTON, wxCommandEvent );
  44
  45 // ------------------------------------------------------------------------
  46 // wxBitmapToggleButton
  47 // ------------------------------------------------------------------------
  48
  49 IMPLEMENT_DYNAMIC_CLASS(wxBitmapToggleButton, wxToggleButton)
  50
  51 bool wxBitmapToggleButton::Create(wxWindow *parent, wxWindowID id,
  52                             const wxBitmap &bitmap, const wxPoint &pos,
  53                             const wxSize &size, long style,
  54                             const wxValidator& validator,
  55                             const wxString &name)
  56 {
  57     if ( !wxToggleButton::Create(parent, id, wxEmptyString, pos, size, style | wxBU_NOTEXT | wxBU_EXACTFIT,
  58                                  validator, name) )
  59         return false;
  60
  61     if ( bitmap.IsOk() )
  62     {
  63         SetBitmapLabel(bitmap);
  64
  65         // we need to adjust the size after setting the bitmap as it may be too
  66         // big for the default button size
  67         SetInitialSize(size);
  68     }
  69
  70     return true;
  71 }
  72
  73
  74 // ------------------------------------------------------------------------
  75 // wxToggleButton
  76 // ------------------------------------------------------------------------
  77
  78 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
  79
  80 bool wxToggleButton::Create(wxWindow *parent, wxWindowID id,
  81                             const wxString &label, const wxPoint &pos,
  82                             const wxSize &size, long style,
  83                             const wxValidator& validator,
  84                             const wxString &name)
  85 {
  86     if (!PreCreation(parent, pos, size) ||
  87         !CreateBase(parent, id, pos, size, style, validator, name ))
  88     {
  89         wxFAIL_MSG(wxT("wxToggleButton creation failed"));
  90         return false;
  91     }
  92
  93     // create either a standard toggle button with text label (which may still contain
  94     // an image under GTK+ 2.6+) or a bitmap-only toggle button if we don't have any
  95     // label
  96     const bool
  97         useLabel = !(style & wxBU_NOTEXT) && !label.empty();
  98     if ( useLabel )
  99     {
 100         m_widget = gtk_toggle_button_new_with_mnemonic("");
 101     }
 102     else // no label, suppose we will have a bitmap
 103     {
 104         m_widget = gtk_toggle_button_new();
 105
 106         GtkWidget *image = gtk_image_new();
 107         gtk_widget_show(image);
 108         gtk_container_add(GTK_CONTAINER(m_widget), image);
 109     }
 110
 111     g_object_ref(m_widget);
 112
 113     if ( useLabel )
 114         SetLabel(label);
 115
 116     g_signal_connect (m_widget, "clicked",
 117                       G_CALLBACK (gtk_togglebutton_clicked_callback),
 118                       this);
 119
 120     m_parent->DoAddChild(this);
 121
 122     PostCreation(size);
 123
 124     return true;
 125 }
 126
 127 void wxToggleButton::GTKDisableEvents()
 128 {
 129     g_signal_handlers_block_by_func(m_widget,
 130                                 (gpointer) gtk_togglebutton_clicked_callback, this);
 131 }
 132
 133 void wxToggleButton::GTKEnableEvents()
 134 {
 135     g_signal_handlers_unblock_by_func(m_widget,
 136                                 (gpointer) gtk_togglebutton_clicked_callback, this);
 137 }
 138
 139 // void SetValue(bool state)
 140 // Set the value of the toggle button.
 141 void wxToggleButton::SetValue(bool state)
 142 {
 143     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 144
 145     if (state == GetValue())
 146         return;
 147
 148     GTKDisableEvents();
 149
 150     gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_widget), state);
 151
 152     GTKEnableEvents();
 153 }
 154
 155 // bool GetValue() const
 156 // Get the value of the toggle button.
 157 bool wxToggleButton::GetValue() const
 158 {
 159     wxCHECK_MSG(m_widget != NULL, false, wxT("invalid toggle button"));
 160
 161     return gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(m_widget)) != 0;
 162 }
 163
 164 void wxToggleButton::SetLabel(const wxString& label)
 165 {
 166     wxCHECK_RET(m_widget != NULL, wxT("invalid toggle button"));
 167
 168     wxAnyButton::SetLabel(label);
 169
 170     if ( HasFlag(wxBU_NOTEXT) )
 171     {
 172         // Don't try to update the label for a button not showing it, this is
 173         // unnecessary and can also actually replace the image we show with the
 174         // label entirely breaking the button code, see #13693.
 175         return;
 176     }
 177
 178     const wxString labelGTK = GTKConvertMnemonics(label);
 179
 180     gtk_button_set_label(GTK_BUTTON(m_widget), wxGTK_CONV(labelGTK));
 181
 182     GTKApplyWidgetStyle( false );
 183 }
 184
 185 #if wxUSE_MARKUP
 186 bool wxToggleButton::DoSetLabelMarkup(const wxString& markup)
 187 {
 188     wxCHECK_MSG( m_widget != NULL, false, "invalid toggle button" );
 189
 190     const wxString stripped = RemoveMarkup(markup);
 191     if ( stripped.empty() && !markup.empty() )
 192         return false;
 193
 194     wxControl::SetLabel(stripped);
 195
 196     if ( !HasFlag(wxBU_NOTEXT) )
 197     {
 198         GtkLabel * const label = GTKGetLabel();
 199         wxCHECK_MSG( label, false, "no label in this toggle button?" );
 200
 201         GTKSetLabelWithMarkupForLabel(label, markup);
 202     }
 203
 204     return true;
 205 }
 206 #endif // wxUSE_MARKUP
 207
 208 GtkLabel *wxToggleButton::GTKGetLabel() const
 209 {
 210     GtkWidget* child = gtk_bin_get_child(GTK_BIN(m_widget));
 211     return GTK_LABEL(child);
 212 }
 213
 214 void wxToggleButton::DoApplyWidgetStyle(GtkRcStyle *style)
 215 {
 216     GTKApplyStyle(m_widget, style);
 217     GTKApplyStyle(gtk_bin_get_child(GTK_BIN(m_widget)), style);
 218 }
 219
 220 // Get the "best" size for this control.
 221 wxSize wxToggleButton::DoGetBestSize() const
 222 {
 223     wxSize ret(wxAnyButton::DoGetBestSize());
 224
 225     if (!HasFlag(wxBU_EXACTFIT))
 226     {
 227         if (ret.x < 80) ret.x = 80;
 228     }
 229
 230     CacheBestSize(ret);
 231     return ret;
 232 }
 233
 234 // static
 235 wxVisualAttributes
 236 wxToggleButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 237 {
 238     return GetDefaultAttributesFromGTKWidget(gtk_toggle_button_new());
 239 }
 240
 241 #endif // wxUSE_TOGGLEBTN