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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace Tango.Touch.Controls
{
[ContentProperty(nameof(Content))]
public class SliderContentControl : Slider
{
private bool m_isBlocked;
#region DependencyProperties
public UIElement Content
{
get { return (UIElement)GetValue(ContentProperty); }
set { SetValue(ContentProperty, value); }
}
public static readonly DependencyProperty ContentProperty =
DependencyProperty.Register("Content", typeof(UIElement), typeof(SliderContentControl), new FrameworkPropertyMetadata(null, FrameworkPropertyMetadataOptions.AffectsRender, (d, e) => (d as SliderContentControl).OnContentChanged()));
public static readonly DependencyProperty ThumbHeightProperty =
DependencyProperty.Register("ThumbHeight", typeof(double), typeof(SliderContentControl), new FrameworkPropertyMetadata((double)32, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault));
public double ThumbHeight
{
get { return (double)GetValue(ThumbHeightProperty); }
set { SetValue(ThumbHeightProperty, value); }
}
public Color ThumbColor
{
get { return (Color)GetValue(ThumbColorProperty); }
set { SetValue(ThumbColorProperty, value); }
}
/// <summary>
/// The thumb color property
/// </summary>
public static readonly DependencyProperty ThumbColorProperty =
DependencyProperty.Register("ThumbColor", typeof(Color), typeof(SliderContentControl), new UIPropertyMetadata(Colors.LightGray, null));
#endregion
static SliderContentControl()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(SliderContentControl), new FrameworkPropertyMetadata(typeof(SliderContentControl)));
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
TouchDown -= TouchDownSlider;
TouchDown += TouchDownSlider;
OnValueChanged(Double.NaN, Value);
IsMoveToPointEnabled = true;
}
private void TouchDownSlider(object sender, TouchEventArgs e)
{
e.Handled = true;
}
private double ValidateValue(double value)
{
if (value >= Minimum && value <= Maximum)
return value;
if ((value) > Maximum)
return Maximum;
if ((value) < Minimum)
return Minimum;
return double.NaN;
}
private void OnContentChanged()
{
RemoveLogicalChild(Content);
AddLogicalChild(Content);
}
protected override void OnValueChanged(double oldValue, double newValue)
{
if (m_isBlocked) return;
m_isBlocked = true;
var validatedValue = ValidateValue(newValue);
if (!double.IsNaN(validatedValue))
{
Value = validatedValue;
}
m_isBlocked = false;
}
protected override void OnPreviewMouseLeftButtonDown(MouseButtonEventArgs e)
{
e.Handled = true;
}
}
}
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