private static void OnSelectionStartChanged(SliderEx slider, AvaloniaPropertyChangedEventArgs e)
{
double oldValue = (double)e.OldValue;
double newValue = (double)e.NewValue;
slider.UpdateSelectionRangeElementPositionAndSize();
}
private void Parent_PropertyChanged(object sender, AvaloniaPropertyChangedEventArgs e)
{
SliderEx parent = sender as SliderEx;
if (parent != null)
{
UpdateProperties(parent);
}
}
private static void OnValueChanged(SliderEx slider, AvaloniaPropertyChangedEventArgs e)
{
slider.UpdateSelectionRangeElementPositionAndSize();
double?oldValue = e.OldValue as double?;
double?newValue = e.NewValue as double?;
slider.OnValueChanged(oldValue.HasValue ? oldValue.Value : 0.0,
newValue.HasValue ? newValue.Value : 0.0);
}
private void _OnMouseLeftButtonDown(PointerPressedEventArgs e)
{
SliderEx sliderEx = e.Source as SliderEx;
// When someone click on the Slider's part, and it's not focusable
// Slider need to take the focus in order to process keyboard correctly
//if (!sliderEx.IsKeyboardFocusWithin)
//{
// e.Handled = sliderEx.IsFocused || e.Handled;
//}
}
/// <summary>
/// gets the parent <see cref="SliderEx"/>
/// and the Track
/// </summary>
public override void ApplyTemplate()
{
base.ApplyTemplate();
SliderEx parent = TemplatedParent as SliderEx;
Track track = parent?.FindChild <Track>();
if (parent != null)
{
UpdateProperties(parent);
parent.PropertyChanged += Parent_PropertyChanged;
if (track != null)
{
track.PropertyChanged += Track_PropertyChanged;
UpdateProperties(track);
}
//BindToTemplatedParent(TicksProperty, SliderEx.TicksProperty);
//BindToTemplatedParent(TickFrequencyProperty, SliderEx.TickFrequencyProperty);
//BindToTemplatedParent(IsSelectionRangeEnabledProperty, SliderEx.IsSelectionRangeEnabledProperty);
//BindToTemplatedParent(SelectionStartProperty, SliderEx.SelectionStartProperty);
//BindToTemplatedParent(SelectionEndProperty, SliderEx.SelectionEndProperty);
//BindToTemplatedParent(MinimumProperty, SliderEx.MinimumProperty);
//BindToTemplatedParent(MaximumProperty, SliderEx.MaximumProperty);
//BindToTemplatedParent(IsDirectionReversedProperty, Track.IsDirectionReversedProperty);
//if (/*!HasNonDefaultValue(ReservedSpaceProperty) &&*/ track != null)
//{
// Binding binding = new Binding();
// //binding.Source = track.Thumb;
// if (parent.Orientation == Layout.Orientation.Horizontal)
// {
// //binding.Path = new PropertyPath(Thumb.WidthProperty);
// Bind(ReservedSpaceProperty, ObservableEx.SingleValue(Thumb.WidthProperty));
// }
// else
// {
// //binding.Path = new PropertyPath(Thumb.HeightProperty);
// Bind(ReservedSpaceProperty, ObservableEx.SingleValue(Thumb.HeightProperty));
// }
// //SetBinding(ReservedSpaceProperty, binding);
//}
}
}
private void UpdateProperties(Track track)
{
SliderEx parent = TemplatedParent as SliderEx;
IsDirectionReversed = track.IsDirectionReversed;
if (track.Thumb != null)
{
if (parent.Orientation == Layout.Orientation.Horizontal)
{
ReservedSpace = track.Thumb.Width;
}
else
{
ReservedSpace = track.Thumb.Height;
}
}
}
private void UpdateProperties(SliderEx parent)
{
//Width = parent.Width;
Ticks = parent.Ticks;
TickFrequency = parent.TickFrequency;
IsSelectionRangeEnabled = parent.IsSelectionRangeEnabled;
SelectionStart = parent.SelectionStart;
SelectionEnd = parent.SelectionEnd;
Minimum = parent.Minimum;
Maximum = parent.Maximum;
//Track track= parent.FindChild<Track>(true);
//if (track?.Thumb != null)
//{
// if (parent.Orientation == Layout.Orientation.Horizontal)
// {
// ReservedSpace = track.Thumb.Width;
// }
// else
// {
// ReservedSpace = track.Thumb.Height;
// }
//}
}
private static void OnThumbDragStarted(SliderEx sliderEx, VectorEventArgs args)
{
sliderEx.OnThumbDragStarted(args);
}
private static void OnThumbDragDelta(SliderEx sliderEx, VectorEventArgs args)
{
sliderEx.OnThumbDragDelta(args);
}
private static void OnSelectionEndChanged(SliderEx slider, AvaloniaPropertyChangedEventArgs e)
{
slider.UpdateSelectionRangeElementPositionAndSize();
}
private static void OnTickPlacementChanged(SliderEx slider, AvaloniaPropertyChangedEventArgs e)
{
if (slider.TopTickBar == null || slider.BottomTickBar == null)
{
return;
}
//strange behaviour in the view
//right now we skip this
if (slider.Orientation == Orientation.Vertical)
{
return;
}
//TopTickBar.Width = this.Width;
//BottomTickBar.Width = this.Width;
if (slider.Track?.Thumb != null)
{
switch (slider.Orientation)
{
case Orientation.Horizontal:
if (DoubleUtil.IsDoubleFinite(slider.Track.Thumb.Width))
{
slider.TopTickBar.ReservedSpace = slider.Track.Thumb.Width;
}
break;
case Orientation.Vertical:
if (DoubleUtil.IsDoubleFinite(slider.Track.Thumb.Height))
{
slider.TopTickBar.ReservedSpace = slider.Track.Thumb.Height;
}
break;
}
}
if (slider.Orientation == Orientation.Horizontal)
{
slider.Track.Thumb.Classes.Set("HorizontalSliderUpThumbStyle", slider.TickPlacement == TickPlacement.TopLeft);
slider.Track.Thumb.Classes.Set("HorizontalSliderDownThumbStyle", slider.TickPlacement == TickPlacement.BottomRight);
}
else
{
slider.Track.Thumb.Classes.Set("VerticalSliderLeftThumbStyle", slider.TickPlacement == TickPlacement.TopLeft);
slider.Track.Thumb.Classes.Set("VerticalSliderRightThumbStyle", slider.TickPlacement == TickPlacement.BottomRight);
}
TickPlacement tickBarPlacement = (TickPlacement)e.NewValue;
switch (tickBarPlacement)
{
case TickPlacement.None:
slider.TopTickBar.IsVisible = false;
slider.BottomTickBar.IsVisible = false;
break;
case TickPlacement.TopLeft:
slider.TopTickBar.IsVisible = true;
if (slider.Orientation == Orientation.Horizontal)
{
slider.TrackBackground.Margin = new Thickness(5, 2, 5, 0);
}
else
{
slider.TrackBackground.Margin = new Thickness(2, 5, 0, 5);
}
break;
case TickPlacement.BottomRight:
slider.BottomTickBar.IsVisible = true;
if (slider.Orientation == Orientation.Horizontal)
{
slider.TrackBackground.Margin = new Thickness(5, 2, 5, 0);
}
else
{
slider.TrackBackground.Margin = new Thickness(0, 5, 2, 5);
}
break;
case TickPlacement.Both:
slider.TopTickBar.IsVisible = true;
slider.BottomTickBar.IsVisible = true;
break;
}
}
