Return NULL from wxWindow::GetCapture() when the capture is being lost.

[wxWidgets.git] / src / gtk / checkbox.cpp

diff --git a/src/gtk/checkbox.cpp b/src/gtk/checkbox.cpp
index 8c4fbbfaf956be6c7fa9794dc1c1bff6045d3274..af822e1b90cde2ea894dd82aadc3c2a2f7a2bb4d 100644 (file)
--- a/src/gtk/checkbox.cpp
+++ b/src/gtk/checkbox.cpp
@@ -1,146 +1,248 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        checkbox.cpp
+// Name:        src/gtk/checkbox.cpp

 // Purpose:
 // Author:      Robert Roebling
 // Purpose:
 // Author:      Robert Roebling

-// Id:          $Id$

 // Copyright:   (c) 1998 Robert Roebling
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Copyright:   (c) 1998 Robert Roebling
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"

 
 

-#ifdef __GNUG__
-#pragma implementation "checkbox.h"
-#endif
+#if wxUSE_CHECKBOX

 
 #include "wx/checkbox.h"
 
 
 #include "wx/checkbox.h"
 

-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
+#include <gtk/gtk.h>
+#include "wx/gtk/private/gtk2-compat.h"

 
 //-----------------------------------------------------------------------------
 // data
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 // data
 //-----------------------------------------------------------------------------
 

-extern bool   g_blockEventsOnDrag;
+extern bool           g_blockEventsOnDrag;

 
 //-----------------------------------------------------------------------------
 // "clicked"
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 // "clicked"
 //-----------------------------------------------------------------------------
 

-static void gtk_checkbox_clicked_callback( GtkWidget *WXUNUSED(widget), wxCheckBox *cb )
+extern "C" {
+static void gtk_checkbox_toggled_callback(GtkWidget *widget, wxCheckBox *cb)

 {
 {

-    if (!cb->HasVMT()) return;
+    if (g_blockEventsOnDrag) return;

 
 

-    if (cb->m_blockFirstEvent)
+    // Transitions for 3state checkbox must be done manually, GTK's checkbox
+    // is 2state with additional "undetermined state" flag which isn't
+    // changed automatically:
+    if (cb->Is3State())

     {
     {

-        cb->m_blockFirstEvent = FALSE;
-        return;
+        GtkToggleButton *toggle = GTK_TOGGLE_BUTTON(widget);
+
+        if (cb->Is3rdStateAllowedForUser())
+        {
+            // The 3 states cycle like this when clicked:
+            // checked -> undetermined -> unchecked -> checked -> ...
+            bool active = gtk_toggle_button_get_active(toggle) != 0;
+            bool inconsistent = gtk_toggle_button_get_inconsistent(toggle) != 0;
+
+            cb->GTKDisableEvents();
+
+            if (!active && !inconsistent)
+            {
+                // checked -> undetermined
+                gtk_toggle_button_set_active(toggle, true);
+                gtk_toggle_button_set_inconsistent(toggle, true);
+            }
+            else if (!active && inconsistent)
+            {
+                // undetermined -> unchecked
+                gtk_toggle_button_set_inconsistent(toggle, false);
+            }
+            else if (active && !inconsistent)
+            {
+                // unchecked -> checked
+                // nothing to do
+            }
+            else
+            {
+                wxFAIL_MSG(wxT("3state wxCheckBox in unexpected state!"));
+            }
+
+            cb->GTKEnableEvents();
+        }
+        else
+        {
+            // user's action unsets undetermined state:
+            gtk_toggle_button_set_inconsistent(toggle, false);
+        }

     }
 
     }
 

-    if (g_blockEventsOnDrag) return;
-
-    wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, cb->GetId());
-    event.SetInt( cb->GetValue() );
+    wxCommandEvent event(wxEVT_CHECKBOX, cb->GetId());
+    event.SetInt(cb->Get3StateValue());

     event.SetEventObject(cb);
     event.SetEventObject(cb);

-    cb->GetEventHandler()->ProcessEvent(event);
+    cb->HandleWindowEvent(event);
+}

 }
 
 //-----------------------------------------------------------------------------
 // wxCheckBox
 //-----------------------------------------------------------------------------
 
 }
 
 //-----------------------------------------------------------------------------
 // wxCheckBox
 //-----------------------------------------------------------------------------
 

-IMPLEMENT_DYNAMIC_CLASS(wxCheckBox,wxControl)
-
-wxCheckBox::wxCheckBox(void)
+wxCheckBox::wxCheckBox()

 {
 {

+    m_widgetCheckbox = NULL;

 }
 
 }
 

-bool wxCheckBox::Create(  wxWindow *parent, wxWindowID id, const wxString &label,
-      const wxPoint &pos, const wxSize &size,
-      long style, const wxValidator& validator, const wxString &name )
+wxCheckBox::~wxCheckBox()

 {
 {

-    m_needParent = TRUE;
-    m_acceptsFocus = TRUE;
-
-    PreCreation( parent, id, pos, size, style, name );
-
-    SetValidator( validator );
-
-    m_widget = gtk_check_button_new_with_label( m_label );
+    if (m_widgetCheckbox && m_widgetCheckbox != m_widget)
+        GTKDisconnect(m_widgetCheckbox);
+}

 
 

-    m_blockFirstEvent = FALSE;
+bool wxCheckBox::Create(wxWindow *parent,
+                        wxWindowID id,
+                        const wxString &label,
+                        const wxPoint &pos,
+                        const wxSize &size,
+                        long style,
+                        const wxValidator& validator,
+                        const wxString &name )
+{
+    WXValidateStyle( &style );
+    if (!PreCreation( parent, pos, size ) ||
+        !CreateBase( parent, id, pos, size, style, validator, name ))
+    {
+        wxFAIL_MSG( wxT("wxCheckBox creation failed") );
+        return false;
+    }

 
 

-    wxSize newSize = size;
-    if (newSize.x == -1) newSize.x = 25+gdk_string_measure( m_widget->style->font, label );
-    if (newSize.y == -1) newSize.y = 26;
-    SetSize( newSize.x, newSize.y );
+    if ( style & wxALIGN_RIGHT )
+    {
+        // VZ: as I don't know a way to create a right aligned checkbox with
+        //     GTK we will create a checkbox without label and a label at the
+        //     left of it
+        m_widgetCheckbox = gtk_check_button_new();

 
 

-    gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
-      GTK_SIGNAL_FUNC(gtk_checkbox_clicked_callback), (gpointer*)this );
+        m_widgetLabel = gtk_label_new("");
+        gtk_misc_set_alignment(GTK_MISC(m_widgetLabel), 0.0, 0.5);

 
 

-    m_parent->AddChild( this );
+        m_widget = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
+        gtk_box_pack_start(GTK_BOX(m_widget), m_widgetLabel, FALSE, FALSE, 3);
+        gtk_box_pack_start(GTK_BOX(m_widget), m_widgetCheckbox, FALSE, FALSE, 3);

 
 

-    (m_parent->m_insertCallback)( m_parent, this );
+        gtk_widget_show( m_widgetLabel );
+        gtk_widget_show( m_widgetCheckbox );
+    }
+    else
+    {
+        m_widgetCheckbox = gtk_check_button_new_with_label("");
+        m_widgetLabel = gtk_bin_get_child(GTK_BIN(m_widgetCheckbox));
+        m_widget = m_widgetCheckbox;
+    }
+    g_object_ref(m_widget);
+    SetLabel( label );

 
 

-    PostCreation();
+    g_signal_connect (m_widgetCheckbox, "toggled",
+                      G_CALLBACK (gtk_checkbox_toggled_callback), this);

 
 

-    gtk_widget_realize( GTK_BUTTON( m_widget )->child );
+    m_parent->DoAddChild( this );

 
 

-    SetLabel( label );
+    PostCreation(size);

 
 

-    SetBackgroundColour( parent->GetBackgroundColour() );
-    SetForegroundColour( parent->GetForegroundColour() );
-    SetFont( parent->GetFont() );
+    return true;
+}

 
 

-    Show( TRUE );
+void wxCheckBox::GTKDisableEvents()
+{
+    g_signal_handlers_block_by_func(m_widgetCheckbox,
+        (gpointer) gtk_checkbox_toggled_callback, this);
+}

 
 

-    return TRUE;
+void wxCheckBox::GTKEnableEvents()
+{
+    g_signal_handlers_unblock_by_func(m_widgetCheckbox,
+        (gpointer) gtk_checkbox_toggled_callback, this);

 }
 
 void wxCheckBox::SetValue( bool state )
 {
 }
 
 void wxCheckBox::SetValue( bool state )
 {

-    wxCHECK_RET( m_widget != NULL, "invalid checkbox" );
+    wxCHECK_RET( m_widgetCheckbox != NULL, wxT("invalid checkbox") );

 
 

-    if ( state == GetValue() )
+    if (state == GetValue())

         return;
 
         return;
 

-    // for compatibility with wxMSW don't send notification when the check box
-    // state is changed programmatically
-    m_blockFirstEvent = TRUE;
+    GTKDisableEvents();

 
 

-    gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widget), state );
+    gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widgetCheckbox), state );
+
+    GTKEnableEvents();

 }
 
 bool wxCheckBox::GetValue() const
 {
 }
 
 bool wxCheckBox::GetValue() const
 {

-    wxCHECK_MSG( m_widget != NULL, FALSE, "invalid checkbox" );
+    wxCHECK_MSG( m_widgetCheckbox != NULL, false, wxT("invalid checkbox") );

 
 

-    return GTK_TOGGLE_BUTTON(m_widget)->active;
+    return gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(m_widgetCheckbox)) != 0;
+}
+
+void wxCheckBox::DoSet3StateValue(wxCheckBoxState state)
+{
+    SetValue(state != wxCHK_UNCHECKED);
+    gtk_toggle_button_set_inconsistent(GTK_TOGGLE_BUTTON(m_widgetCheckbox),
+                                       state == wxCHK_UNDETERMINED);
+}
+
+wxCheckBoxState wxCheckBox::DoGet3StateValue() const
+{
+    if (gtk_toggle_button_get_inconsistent(GTK_TOGGLE_BUTTON(m_widgetCheckbox)))
+    {
+        return wxCHK_UNDETERMINED;
+    }
+    else
+    {
+        return GetValue() ? wxCHK_CHECKED : wxCHK_UNCHECKED;
+    }

 }
 
 void wxCheckBox::SetLabel( const wxString& label )
 {
 }
 
 void wxCheckBox::SetLabel( const wxString& label )
 {

-    wxCHECK_RET( m_widget != NULL, "invalid checkbox" );
+    wxCHECK_RET( m_widgetLabel != NULL, wxT("invalid checkbox") );

 
 

-    wxControl::SetLabel( label );
+    // save the label inside m_label in case user calls GetLabel() later
+    wxControl::SetLabel(label);

 
 

-    gtk_label_set( GTK_LABEL( GTK_BUTTON(m_widget)->child ), GetLabel() );
+    GTKSetLabelForLabel(GTK_LABEL(m_widgetLabel), label);

 }
 
 }
 

-void wxCheckBox::Enable( bool enable )
+bool wxCheckBox::Enable( bool enable )

 {
 {

-    wxCHECK_RET( m_widget != NULL, "invalid checkbox" );
+    if (!base_type::Enable(enable))
+        return false;
+
+    gtk_widget_set_sensitive( m_widgetLabel, enable );
+
+    if (enable)
+        GTKFixSensitivity();

 
 

-    wxControl::Enable( enable );
+    return true;
+}

 
 

-    gtk_widget_set_sensitive( GTK_BUTTON(m_widget)->child, enable );
+void wxCheckBox::DoApplyWidgetStyle(GtkRcStyle *style)
+{
+    GTKApplyStyle(m_widgetCheckbox, style);
+    GTKApplyStyle(m_widgetLabel, style);

 }
 
 }
 

-void wxCheckBox::ApplyWidgetStyle()
+GdkWindow *wxCheckBox::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const

 {
 {

-    SetWidgetStyle();
-    gtk_widget_set_style( m_widget, m_widgetStyle );
-    gtk_widget_set_style( GTK_BUTTON(m_widget)->child, m_widgetStyle );
+    return gtk_button_get_event_window(GTK_BUTTON(m_widgetCheckbox));

 }
 
 }
 

+// static
+wxVisualAttributes
+wxCheckBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
+{
+    return GetDefaultAttributesFromGTKWidget(gtk_check_button_new());
+}

 
 

+#endif