| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: checkbox.cpp |
| 3 | // Purpose: |
| 4 | // Author: Robert Roebling |
| 5 | // Id: $Id$ |
| 6 | // Copyright: (c) 1998 Robert Roebling |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | |
| 11 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) |
| 12 | #pragma implementation "checkbox.h" |
| 13 | #endif |
| 14 | |
| 15 | // For compilers that support precompilation, includes "wx.h". |
| 16 | #include "wx/wxprec.h" |
| 17 | |
| 18 | #include "wx/defs.h" |
| 19 | |
| 20 | #if wxUSE_CHECKBOX |
| 21 | |
| 22 | #include "wx/checkbox.h" |
| 23 | |
| 24 | #include "wx/gtk/private.h" |
| 25 | |
| 26 | //----------------------------------------------------------------------------- |
| 27 | // idle system |
| 28 | //----------------------------------------------------------------------------- |
| 29 | |
| 30 | extern void wxapp_install_idle_handler(); |
| 31 | extern bool g_isIdle; |
| 32 | |
| 33 | //----------------------------------------------------------------------------- |
| 34 | // data |
| 35 | //----------------------------------------------------------------------------- |
| 36 | |
| 37 | extern bool g_blockEventsOnDrag; |
| 38 | extern wxCursor g_globalCursor; |
| 39 | extern wxWindowGTK *g_delayedFocus; |
| 40 | |
| 41 | //----------------------------------------------------------------------------- |
| 42 | // "clicked" |
| 43 | //----------------------------------------------------------------------------- |
| 44 | |
| 45 | extern "C" { |
| 46 | static void gtk_checkbox_toggled_callback(GtkWidget *widget, wxCheckBox *cb) |
| 47 | { |
| 48 | if (g_isIdle) wxapp_install_idle_handler(); |
| 49 | |
| 50 | if (!cb->m_hasVMT) return; |
| 51 | |
| 52 | if (g_blockEventsOnDrag) return; |
| 53 | |
| 54 | if (cb->m_blockEvent) return; |
| 55 | |
| 56 | #ifdef __WXGTK20__ |
| 57 | // Transitions for 3state checkbox must be done manually, GTK's checkbox |
| 58 | // is 2state with additional "undetermined state" flag which isn't |
| 59 | // changed automatically: |
| 60 | if (cb->Is3State()) |
| 61 | { |
| 62 | GtkToggleButton *toggle = GTK_TOGGLE_BUTTON(widget); |
| 63 | |
| 64 | if (cb->Is3rdStateAllowedForUser()) |
| 65 | { |
| 66 | // The 3 states cycle like this when clicked: |
| 67 | // checked -> undetermined -> unchecked -> checked -> ... |
| 68 | bool active = gtk_toggle_button_get_active(toggle); |
| 69 | bool inconsistent = gtk_toggle_button_get_inconsistent(toggle); |
| 70 | |
| 71 | cb->m_blockEvent = true; |
| 72 | |
| 73 | if (!active && !inconsistent) |
| 74 | { |
| 75 | // checked -> undetermined |
| 76 | gtk_toggle_button_set_active(toggle, true); |
| 77 | gtk_toggle_button_set_inconsistent(toggle, true); |
| 78 | } |
| 79 | else if (!active && inconsistent) |
| 80 | { |
| 81 | // undetermined -> unchecked |
| 82 | gtk_toggle_button_set_inconsistent(toggle, false); |
| 83 | } |
| 84 | else if (active && !inconsistent) |
| 85 | { |
| 86 | // unchecked -> checked |
| 87 | // nothing to do |
| 88 | } |
| 89 | else |
| 90 | { |
| 91 | wxFAIL_MSG(_T("3state wxCheckBox in unexpected state!")); |
| 92 | } |
| 93 | |
| 94 | cb->m_blockEvent = false; |
| 95 | } |
| 96 | else |
| 97 | { |
| 98 | // user's action unsets undetermined state: |
| 99 | gtk_toggle_button_set_inconsistent(toggle, false); |
| 100 | } |
| 101 | } |
| 102 | #endif |
| 103 | |
| 104 | wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, cb->GetId()); |
| 105 | #ifdef __WXGTK20__ |
| 106 | event.SetInt(cb->Get3StateValue()); |
| 107 | #else |
| 108 | event.SetInt(cb->GetValue()); |
| 109 | #endif |
| 110 | event.SetEventObject(cb); |
| 111 | cb->GetEventHandler()->ProcessEvent(event); |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | //----------------------------------------------------------------------------- |
| 116 | // wxCheckBox |
| 117 | //----------------------------------------------------------------------------- |
| 118 | |
| 119 | IMPLEMENT_DYNAMIC_CLASS(wxCheckBox,wxControl) |
| 120 | |
| 121 | wxCheckBox::wxCheckBox() |
| 122 | { |
| 123 | } |
| 124 | |
| 125 | bool wxCheckBox::Create(wxWindow *parent, |
| 126 | wxWindowID id, |
| 127 | const wxString &label, |
| 128 | const wxPoint &pos, |
| 129 | const wxSize &size, |
| 130 | long style, |
| 131 | const wxValidator& validator, |
| 132 | const wxString &name ) |
| 133 | { |
| 134 | m_needParent = TRUE; |
| 135 | m_acceptsFocus = TRUE; |
| 136 | m_blockEvent = FALSE; |
| 137 | |
| 138 | if (!PreCreation( parent, pos, size ) || |
| 139 | !CreateBase( parent, id, pos, size, style, validator, name )) |
| 140 | { |
| 141 | wxFAIL_MSG( wxT("wxCheckBox creation failed") ); |
| 142 | return FALSE; |
| 143 | } |
| 144 | |
| 145 | wxASSERT_MSG( (style & wxCHK_ALLOW_3RD_STATE_FOR_USER) == 0 || |
| 146 | (style & wxCHK_3STATE) != 0, |
| 147 | wxT("Using wxCHK_ALLOW_3RD_STATE_FOR_USER") |
| 148 | wxT(" style flag for a 2-state checkbox is useless") ); |
| 149 | |
| 150 | if ( style & wxALIGN_RIGHT ) |
| 151 | { |
| 152 | // VZ: as I don't know a way to create a right aligned checkbox with |
| 153 | // GTK we will create a checkbox without label and a label at the |
| 154 | // left of it |
| 155 | m_widgetCheckbox = gtk_check_button_new(); |
| 156 | |
| 157 | m_widgetLabel = gtk_label_new(""); |
| 158 | gtk_misc_set_alignment(GTK_MISC(m_widgetLabel), 0.0, 0.5); |
| 159 | |
| 160 | m_widget = gtk_hbox_new(FALSE, 0); |
| 161 | gtk_box_pack_start(GTK_BOX(m_widget), m_widgetLabel, FALSE, FALSE, 3); |
| 162 | gtk_box_pack_start(GTK_BOX(m_widget), m_widgetCheckbox, FALSE, FALSE, 3); |
| 163 | |
| 164 | gtk_widget_show( m_widgetLabel ); |
| 165 | gtk_widget_show( m_widgetCheckbox ); |
| 166 | } |
| 167 | else |
| 168 | { |
| 169 | m_widgetCheckbox = gtk_check_button_new_with_label(""); |
| 170 | m_widgetLabel = BUTTON_CHILD( m_widgetCheckbox ); |
| 171 | m_widget = m_widgetCheckbox; |
| 172 | } |
| 173 | SetLabel( label ); |
| 174 | |
| 175 | gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox), |
| 176 | "toggled", |
| 177 | GTK_SIGNAL_FUNC(gtk_checkbox_toggled_callback), |
| 178 | (gpointer *)this ); |
| 179 | |
| 180 | m_parent->DoAddChild( this ); |
| 181 | |
| 182 | PostCreation(size); |
| 183 | |
| 184 | return TRUE; |
| 185 | } |
| 186 | |
| 187 | void wxCheckBox::SetValue( bool state ) |
| 188 | { |
| 189 | wxCHECK_RET( m_widgetCheckbox != NULL, wxT("invalid checkbox") ); |
| 190 | |
| 191 | if (state == GetValue()) |
| 192 | return; |
| 193 | |
| 194 | m_blockEvent = TRUE; |
| 195 | |
| 196 | gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widgetCheckbox), state ); |
| 197 | |
| 198 | m_blockEvent = FALSE; |
| 199 | } |
| 200 | |
| 201 | bool wxCheckBox::GetValue() const |
| 202 | { |
| 203 | wxCHECK_MSG( m_widgetCheckbox != NULL, FALSE, wxT("invalid checkbox") ); |
| 204 | |
| 205 | #ifdef __WXGTK20__ |
| 206 | return gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(m_widgetCheckbox)); |
| 207 | #else |
| 208 | return GTK_TOGGLE_BUTTON(m_widgetCheckbox)->active; |
| 209 | #endif |
| 210 | } |
| 211 | |
| 212 | #ifdef __WXGTK20__ |
| 213 | void wxCheckBox::DoSet3StateValue(wxCheckBoxState state) |
| 214 | { |
| 215 | SetValue(state != wxCHK_UNCHECKED); |
| 216 | gtk_toggle_button_set_inconsistent(GTK_TOGGLE_BUTTON(m_widgetCheckbox), |
| 217 | state == wxCHK_UNDETERMINED); |
| 218 | } |
| 219 | |
| 220 | wxCheckBoxState wxCheckBox::DoGet3StateValue() const |
| 221 | { |
| 222 | if (gtk_toggle_button_get_inconsistent(GTK_TOGGLE_BUTTON(m_widgetCheckbox))) |
| 223 | { |
| 224 | return wxCHK_UNDETERMINED; |
| 225 | } |
| 226 | else |
| 227 | { |
| 228 | return GetValue() ? wxCHK_CHECKED : wxCHK_UNCHECKED; |
| 229 | } |
| 230 | } |
| 231 | #endif |
| 232 | |
| 233 | void wxCheckBox::SetLabel( const wxString& label ) |
| 234 | { |
| 235 | wxCHECK_RET( m_widgetLabel != NULL, wxT("invalid checkbox") ); |
| 236 | |
| 237 | wxControl::SetLabel( label ); |
| 238 | |
| 239 | #ifdef __WXGTK20__ |
| 240 | wxString label2 = PrepareLabelMnemonics( label ); |
| 241 | gtk_label_set_text_with_mnemonic( GTK_LABEL(m_widgetLabel), wxGTK_CONV( label2 ) ); |
| 242 | #else |
| 243 | gtk_label_set( GTK_LABEL(m_widgetLabel), wxGTK_CONV( GetLabel() ) ); |
| 244 | #endif |
| 245 | } |
| 246 | |
| 247 | bool wxCheckBox::Enable( bool enable ) |
| 248 | { |
| 249 | if ( !wxControl::Enable( enable ) ) |
| 250 | return FALSE; |
| 251 | |
| 252 | gtk_widget_set_sensitive( m_widgetLabel, enable ); |
| 253 | |
| 254 | return TRUE; |
| 255 | } |
| 256 | |
| 257 | void wxCheckBox::DoApplyWidgetStyle(GtkRcStyle *style) |
| 258 | { |
| 259 | gtk_widget_modify_style(m_widgetCheckbox, style); |
| 260 | gtk_widget_modify_style(m_widgetLabel, style); |
| 261 | } |
| 262 | |
| 263 | bool wxCheckBox::IsOwnGtkWindow( GdkWindow *window ) |
| 264 | { |
| 265 | return window == TOGGLE_BUTTON_EVENT_WIN(m_widget); |
| 266 | } |
| 267 | |
| 268 | void wxCheckBox::OnInternalIdle() |
| 269 | { |
| 270 | wxCursor cursor = m_cursor; |
| 271 | if (g_globalCursor.Ok()) cursor = g_globalCursor; |
| 272 | |
| 273 | GdkWindow *event_window = TOGGLE_BUTTON_EVENT_WIN(m_widgetCheckbox); |
| 274 | if ( event_window && cursor.Ok() ) |
| 275 | { |
| 276 | /* I now set the cursor the anew in every OnInternalIdle call |
| 277 | as setting the cursor in a parent window also effects the |
| 278 | windows above so that checking for the current cursor is |
| 279 | not possible. */ |
| 280 | |
| 281 | gdk_window_set_cursor( event_window, cursor.GetCursor() ); |
| 282 | } |
| 283 | |
| 284 | if (g_delayedFocus == this) |
| 285 | { |
| 286 | if (GTK_WIDGET_REALIZED(m_widget)) |
| 287 | { |
| 288 | gtk_widget_grab_focus( m_widget ); |
| 289 | g_delayedFocus = NULL; |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | if (wxUpdateUIEvent::CanUpdate(this)) |
| 294 | UpdateWindowUI(wxUPDATE_UI_FROMIDLE); |
| 295 | } |
| 296 | |
| 297 | wxSize wxCheckBox::DoGetBestSize() const |
| 298 | { |
| 299 | return wxControl::DoGetBestSize(); |
| 300 | } |
| 301 | |
| 302 | // static |
| 303 | wxVisualAttributes |
| 304 | wxCheckBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant)) |
| 305 | { |
| 306 | return GetDefaultAttributesFromGTKWidget(gtk_check_button_new); |
| 307 | } |
| 308 | |
| 309 | #endif |