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