- m_needParent = TRUE;
-
- PreCreation( parent, id, pos, size, style, name );
-
- SetValidator( validator );
-
- m_oldPos = 0.0;
-
- if (style & wxSL_VERTICAL == wxSL_VERTICAL)
- m_widget = gtk_hscale_new( (GtkAdjustment *) NULL );
- else
- m_widget = gtk_vscale_new( (GtkAdjustment *) NULL );
-
- gtk_scale_set_draw_value( GTK_SCALE( m_widget ), FALSE );
-
- m_adjust = gtk_range_get_adjustment( GTK_RANGE(m_widget) );
-
- gtk_signal_connect (GTK_OBJECT (m_adjust), "value_changed",
- (GtkSignalFunc) gtk_slider_callback, (gpointer) this );
- SetRange( minValue, maxValue );
- SetValue( value );
-
- m_parent->AddChild( this );
-
- (m_parent->m_insertCallback)( m_parent, this );
-
- PostCreation();
-
- SetBackgroundColour( parent->GetBackgroundColour() );
-
- Show( TRUE );
-
- return TRUE;
-}
-
-int wxSlider::GetValue(void) const
-{
- return (int)(m_adjust->value+0.5);
+ m_needParent = TRUE;
+
+ if (!PreCreation( parent, pos, size ) ||
+ !CreateBase( parent, id, pos, size, style, validator, name ))
+ {
+ wxFAIL_MSG( wxT("wxSlider creation failed") );
+ return FALSE;
+ }
+
+ m_oldPos = 0.0;
+
+ if (style & wxSL_VERTICAL)
+ m_widget = gtk_vscale_new( (GtkAdjustment *) NULL );
+ else
+ m_widget = gtk_hscale_new( (GtkAdjustment *) NULL );
+
+ if (style & wxSL_LABELS)
+ {
+ gtk_scale_set_draw_value( GTK_SCALE( m_widget ), TRUE );
+ gtk_scale_set_digits( GTK_SCALE( m_widget ), 0 );
+
+ /* labels need more space and too small window will
+ cause junk to appear on the dialog */
+ if (style & wxSL_VERTICAL)
+ {
+ wxSize sz( size );
+ if (sz.x < 35)
+ {
+ sz.x = 35;
+ SetSize( sz );
+ }
+ }
+ else
+ {
+ wxSize sz( size );
+ if (sz.y < 35)
+ {
+ sz.y = 35;
+ SetSize( sz );
+ }
+ }
+ }
+ else
+ gtk_scale_set_draw_value( GTK_SCALE( m_widget ), FALSE );
+
+ m_adjust = gtk_range_get_adjustment( GTK_RANGE(m_widget) );
+
+ gtk_signal_connect( GTK_OBJECT(m_adjust),
+ "value_changed",
+ (GtkSignalFunc) gtk_slider_callback,
+ (gpointer) this );
+
+ SetRange( minValue, maxValue );
+ SetValue( value );
+
+ m_parent->DoAddChild( this );
+
+ PostCreation();
+
+ SetBackgroundColour( parent->GetBackgroundColour() );
+
+ Show( TRUE );
+
+ return TRUE;
+}
+
+int wxSlider::GetValue() const
+{
+ // we want to round to the nearest integer, i.e. 0.9 is rounded to 1 and
+ // -0.9 is rounded to -1
+ double val = m_adjust->value;
+ return (int)(val >= 0 ? val - 0.5 : val + 0.5);