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 <gdk/gdk.h>
  22 #include <gtk/gtk.h>
  23
  24 //-----------------------------------------------------------------------------
  25 // idle system
  26 //-----------------------------------------------------------------------------
  27
  28 extern void wxapp_install_idle_handler();
  29 extern bool g_isIdle;
  30
  31 //-----------------------------------------------------------------------------
  32 // data
  33 //-----------------------------------------------------------------------------
  34
  35 extern bool       g_blockEventsOnDrag;
  36 extern wxCursor   g_globalCursor;
  37
  38 //-----------------------------------------------------------------------------
  39 // "clicked"
  40 //-----------------------------------------------------------------------------
  41
  42 static void gtk_checkbox_clicked_callback( GtkWidget *WXUNUSED(widget), wxCheckBox *cb )
  43 {
  44     if (g_isIdle) wxapp_install_idle_handler();
  45
  46     if (!cb->m_hasVMT) return;
  47
  48     if (g_blockEventsOnDrag) return;
  49
  50     wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, cb->GetId());
  51     event.SetInt( cb->GetValue() );
  52     event.SetEventObject(cb);
  53     cb->GetEventHandler()->ProcessEvent(event);
  54 }
  55
  56 //-----------------------------------------------------------------------------
  57 // wxCheckBox
  58 //-----------------------------------------------------------------------------
  59
  60 IMPLEMENT_DYNAMIC_CLASS(wxCheckBox,wxControl)
  61
  62 wxCheckBox::wxCheckBox()
  63 {
  64 }
  65
  66 bool wxCheckBox::Create(wxWindow *parent,
  67                         wxWindowID id,
  68                         const wxString &label,
  69                         const wxPoint &pos,
  70                         const wxSize &size,
  71                         long style,
  72                         const wxValidator& validator,
  73                         const wxString &name )
  74 {
  75     m_needParent = TRUE;
  76     m_acceptsFocus = TRUE;
  77
  78     if (!PreCreation( parent, pos, size ) ||
  79         !CreateBase( parent, id, pos, size, style, validator, name ))
  80     {
  81         wxFAIL_MSG( wxT("wxCheckBox creation failed") );
  82         return FALSE;
  83     }
  84
  85     wxControl::SetLabel( label );
  86
  87     if ( style & wxALIGN_RIGHT )
  88     {
  89         // VZ: as I don't know a way to create a right aligned checkbox with
  90         //     GTK we will create a checkbox without label and a label at the
  91         //     left of it
  92         m_widgetCheckbox = gtk_check_button_new();
  93
  94         m_widgetLabel = gtk_label_new(m_label.mbc_str());
  95         gtk_misc_set_alignment(GTK_MISC(m_widgetLabel), 0.0, 0.5);
  96
  97         m_widget = gtk_hbox_new(FALSE, 0);
  98         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetLabel, FALSE, FALSE, 3);
  99         gtk_box_pack_start(GTK_BOX(m_widget), m_widgetCheckbox, FALSE, FALSE, 3);
 100
 101         gtk_widget_show( m_widgetLabel );
 102         gtk_widget_show( m_widgetCheckbox );
 103     }
 104     else
 105     {
 106         m_widgetCheckbox = gtk_check_button_new_with_label( m_label.mbc_str() );
 107         m_widgetLabel = GTK_BUTTON( m_widgetCheckbox )->child;
 108         m_widget = m_widgetCheckbox;
 109     }
 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     SetFont( parent->GetFont() );
 121
 122     wxSize size_best( DoGetBestSize() );
 123     wxSize new_size( size );
 124     if (new_size.x == -1)
 125         new_size.x = size_best.x;
 126     if (new_size.y == -1)
 127         new_size.y = size_best.y;
 128     if ((new_size.x != size.x) || (new_size.y != size.y))
 129         SetSize( new_size.x, new_size.y );
 130
 131     SetBackgroundColour( parent->GetBackgroundColour() );
 132     SetForegroundColour( parent->GetForegroundColour() );
 133
 134     Show( TRUE );
 135
 136     return TRUE;
 137 }
 138
 139 void wxCheckBox::SetValue( bool state )
 140 {
 141     wxCHECK_RET( m_widgetCheckbox != NULL, wxT("invalid checkbox") );
 142
 143     if (state == GetValue())
 144         return;
 145
 146     gtk_signal_disconnect_by_func( GTK_OBJECT(m_widgetCheckbox),
 147                         GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback),
 148                         (gpointer *)this );
 149
 150     gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widgetCheckbox), state );
 151
 152     gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox),
 153                         "clicked",
 154                         GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback),
 155                         (gpointer *)this );
 156 }
 157
 158 bool wxCheckBox::GetValue() const
 159 {
 160     wxCHECK_MSG( m_widgetCheckbox != NULL, FALSE, wxT("invalid checkbox") );
 161
 162     return GTK_TOGGLE_BUTTON(m_widgetCheckbox)->active;
 163 }
 164
 165 void wxCheckBox::SetLabel( const wxString& label )
 166 {
 167     wxCHECK_RET( m_widgetLabel != NULL, wxT("invalid checkbox") );
 168
 169     wxControl::SetLabel( label );
 170
 171     gtk_label_set( GTK_LABEL(m_widgetLabel), GetLabel().mbc_str() );
 172 }
 173
 174 bool wxCheckBox::Enable( bool enable )
 175 {
 176     if ( !wxControl::Enable( enable ) )
 177         return FALSE;
 178
 179     gtk_widget_set_sensitive( m_widgetLabel, enable );
 180
 181     return TRUE;
 182 }
 183
 184 void wxCheckBox::ApplyWidgetStyle()
 185 {
 186     SetWidgetStyle();
 187     gtk_widget_set_style( m_widgetCheckbox, m_widgetStyle );
 188     gtk_widget_set_style( m_widgetLabel, m_widgetStyle );
 189 }
 190
 191 bool wxCheckBox::IsOwnGtkWindow( GdkWindow *window )
 192 {
 193     return (window == GTK_TOGGLE_BUTTON(m_widget)->event_window);
 194 }
 195
 196 void wxCheckBox::OnInternalIdle()
 197 {
 198     wxCursor cursor = m_cursor;
 199     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 200
 201     if (GTK_TOGGLE_BUTTON(m_widgetCheckbox)->event_window && cursor.Ok())
 202     {
 203         /* I now set the cursor the anew in every OnInternalIdle call
 204            as setting the cursor in a parent window also effects the
 205            windows above so that checking for the current cursor is
 206            not possible. */
 207
 208        gdk_window_set_cursor( GTK_TOGGLE_BUTTON(m_widgetCheckbox)->event_window, cursor.GetCursor() );
 209     }
 210
 211     UpdateWindowUI();
 212 }
 213
 214 wxSize wxCheckBox::DoGetBestSize() const
 215 {
 216     return wxControl::DoGetBestSize();
 217 }
 218
 219 #endif