src/gtk/checkbox.cpp

   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 #ifdef __GNUG__
  12 #pragma implementation "checkbox.h"
  13 #endif
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_CHECKBOX
  18
  19 #include "wx/checkbox.h"
  20
  21 #include "wx/gtk/private.h"
  22
  23 //-----------------------------------------------------------------------------
  24 // idle system
  25 //-----------------------------------------------------------------------------
  26
  27 extern void wxapp_install_idle_handler();
  28 extern bool g_isIdle;
  29
  30 //-----------------------------------------------------------------------------
  31 // data
  32 //-----------------------------------------------------------------------------
  33
  34 extern bool       g_blockEventsOnDrag;
  35 extern wxCursor   g_globalCursor;
  36
  37 //-----------------------------------------------------------------------------
  38 // "clicked"
  39 //-----------------------------------------------------------------------------
  40
  41 static void gtk_checkbox_clicked_callback( GtkWidget *WXUNUSED(widget), wxCheckBox *cb )
  42 {
  43     if (g_isIdle) wxapp_install_idle_handler();
  44
  45     if (!cb->m_hasVMT) return;
  46
  47     if (g_blockEventsOnDrag) return;
  48
  49     if (cb->m_blockEvent) return;
  50
  51     wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, cb->GetId());
  52     event.SetInt( cb->GetValue() );
  53     event.SetEventObject(cb);
  54     cb->GetEventHandler()->ProcessEvent(event);
  55 }
  56
  57 //-----------------------------------------------------------------------------
  58 // wxCheckBox
  59 //-----------------------------------------------------------------------------
  60
  61 IMPLEMENT_DYNAMIC_CLASS(wxCheckBox,wxControl)
  62
  63 wxCheckBox::wxCheckBox()
  64 {
  65 }
  66
  67 bool wxCheckBox::Create(wxWindow *parent,
  68                         wxWindowID id,
  69                         const wxString &label,
  70                         const wxPoint &pos,
  71                         const wxSize &size,
  72                         long style,
  73                         const wxValidator& validator,
  74                         const wxString &name )
  75 {
  76     m_needParent = TRUE;
  77     m_acceptsFocus = TRUE;
  78     m_blockEvent = FALSE;
  79
  80     if (!PreCreation( parent, pos, size ) ||
  81         !CreateBase( parent, id, pos, size, style, validator, name ))
  82     {
  83         wxFAIL_MSG( wxT("wxCheckBox creation failed") );
  84         return FALSE;
  85     }
  86
  87     wxControl::SetLabel( label );
  88
  89     if ( style & wxALIGN_RIGHT )
  90     {
  91         // VZ: as I don't know a way to create a right aligned checkbox with
  92         //     GTK we will create a checkbox without label and a label at the
  93         //     left of it
  94         m_widgetCheckbox = gtk_check_button_new();
  95
  96         m_widgetLabel = gtk_label_new(m_label.mbc_str());
  97         gtk_misc_set_alignment(GTK_MISC(m_widgetLabel), 0.0, 0.5);
  98
  99         m_widget = gtk_hbox_new(FALSE, 0);
 100         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetLabel, FALSE, FALSE, 3);
 101         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetCheckbox, FALSE, FALSE, 3);
 102
 103         gtk_widget_show( m_widgetLabel );
 104         gtk_widget_show( m_widgetCheckbox );
 105     }
 106     else
 107     {
 108         m_widgetCheckbox = gtk_check_button_new_with_label( m_label.mbc_str() );
 109         m_widgetLabel = BUTTON_CHILD( m_widgetCheckbox );
 110         m_widget = m_widgetCheckbox;
 111     }
 112
 113     gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox),
 114                         "clicked",
 115                         GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback),
 116                         (gpointer *)this );
 117
 118     m_parent->DoAddChild( this );
 119
 120     PostCreation();
 121
 122     SetFont( parent->GetFont() );
 123
 124     wxSize size_best( DoGetBestSize() );
 125     wxSize new_size( size );
 126     if (new_size.x == -1)
 127         new_size.x = size_best.x;
 128     if (new_size.y == -1)
 129         new_size.y = size_best.y;
 130     if ((new_size.x != size.x) || (new_size.y != size.y))
 131         SetSize( new_size.x, new_size.y );
 132
 133     SetBackgroundColour( parent->GetBackgroundColour() );
 134     SetForegroundColour( parent->GetForegroundColour() );
 135
 136     Show( TRUE );
 137
 138     return TRUE;
 139 }
 140
 141 void wxCheckBox::SetValue( bool state )
 142 {
 143     wxCHECK_RET( m_widgetCheckbox != NULL, wxT("invalid checkbox") );
 144
 145     if (state == GetValue())
 146         return;
 147
 148     m_blockEvent = TRUE;
 149
 150     gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widgetCheckbox), state );
 151
 152     m_blockEvent = FALSE;
 153 }
 154
 155 bool wxCheckBox::GetValue() const
 156 {
 157     wxCHECK_MSG( m_widgetCheckbox != NULL, FALSE, wxT("invalid checkbox") );
 158
 159     return GTK_TOGGLE_BUTTON(m_widgetCheckbox)->active;
 160 }
 161
 162 void wxCheckBox::SetLabel( const wxString& label )
 163 {
 164     wxCHECK_RET( m_widgetLabel != NULL, wxT("invalid checkbox") );
 165
 166     wxControl::SetLabel( label );
 167
 168     gtk_label_set( GTK_LABEL(m_widgetLabel), GetLabel().mbc_str() );
 169 }
 170
 171 bool wxCheckBox::Enable( bool enable )
 172 {
 173     if ( !wxControl::Enable( enable ) )
 174         return FALSE;
 175
 176     gtk_widget_set_sensitive( m_widgetLabel, enable );
 177
 178     return TRUE;
 179 }
 180
 181 void wxCheckBox::ApplyWidgetStyle()
 182 {
 183     SetWidgetStyle();
 184     gtk_widget_set_style( m_widgetCheckbox, m_widgetStyle );
 185     gtk_widget_set_style( m_widgetLabel, m_widgetStyle );
 186 }
 187
 188 bool wxCheckBox::IsOwnGtkWindow( GdkWindow *window )
 189 {
 190     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 191 }
 192
 193 void wxCheckBox::OnInternalIdle()
 194 {
 195     wxCursor cursor = m_cursor;
 196     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 197
 198     GdkWindow *event_window = TOGGLE_BUTTON_EVENT_WIN(m_widgetCheckbox);
 199     if ( event_window && cursor.Ok() )
 200     {
 201         /* I now set the cursor the anew in every OnInternalIdle call
 202            as setting the cursor in a parent window also effects the
 203            windows above so that checking for the current cursor is
 204            not possible. */
 205
 206        gdk_window_set_cursor( event_window, cursor.GetCursor() );
 207     }
 208
 209     UpdateWindowUI();
 210 }
 211
 212 wxSize wxCheckBox::DoGetBestSize() const
 213 {
 214     return wxControl::DoGetBestSize();
 215 }
 216
 217 #endif