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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.Input;
using System.Windows.Media;
namespace Tango.Touch.Controls
{
public class TouchButton : Button, ITouchControl
{
private bool _executingDelayCommand;
#region ITouchControl
public CornerRadius CornerRadius
{
get { return (CornerRadius)GetValue(CornerRadiusProperty); }
set { SetValue(CornerRadiusProperty, value); }
}
public static readonly DependencyProperty CornerRadiusProperty =
DependencyProperty.Register("CornerRadius", typeof(CornerRadius), typeof(TouchButton), new PropertyMetadata(new CornerRadius()));
public bool EnableDropShadow
{
get { return (bool)GetValue(EnableDropShadowProperty); }
set { SetValue(EnableDropShadowProperty, value); }
}
public static readonly DependencyProperty EnableDropShadowProperty =
DependencyProperty.Register("EnableDropShadow", typeof(bool), typeof(TouchButton), new PropertyMetadata(true));
public double BlurRadius
{
get { return (double)GetValue(BlurRadiusProperty); }
set { SetValue(BlurRadiusProperty, value); }
}
public static readonly DependencyProperty BlurRadiusProperty =
DependencyProperty.Register("BlurRadius", typeof(double), typeof(TouchButton), new PropertyMetadata(10.0));
public double ShadowDepth
{
get { return (double)GetValue(ShadowDepthProperty); }
set { SetValue(ShadowDepthProperty, value); }
}
public static readonly DependencyProperty ShadowDepthProperty =
DependencyProperty.Register("ShadowDepth", typeof(double), typeof(TouchButton), new PropertyMetadata(1.0));
public Color ShadowColor
{
get { return (Color)GetValue(ShadowColorProperty); }
set { SetValue(ShadowColorProperty, value); }
}
public static readonly DependencyProperty ShadowColorProperty =
DependencyProperty.Register("ShadowColor", typeof(Color), typeof(TouchButton), new PropertyMetadata(Colors.Gray));
public double RippleFactor
{
get { return (double)GetValue(RippleFactorProperty); }
set { SetValue(RippleFactorProperty, value); }
}
public static readonly DependencyProperty RippleFactorProperty =
DependencyProperty.Register("RippleFactor", typeof(double), typeof(TouchButton), new PropertyMetadata(5.0));
public bool RippleCentered
{
get { return (bool)GetValue(RippleCenteredProperty); }
set { SetValue(RippleCenteredProperty, value); }
}
public static readonly DependencyProperty RippleCenteredProperty =
DependencyProperty.Register("RippleCentered", typeof(bool), typeof(TouchButton), new PropertyMetadata(false));
public Brush RippleBrush
{
get { return (Brush)GetValue(RippleBrushProperty); }
set { SetValue(RippleBrushProperty, value); }
}
public static readonly DependencyProperty RippleBrushProperty =
DependencyProperty.Register("RippleBrush", typeof(Brush), typeof(TouchButton), new PropertyMetadata(new SolidColorBrush(Colors.White) { Opacity = 0.5 }));
public ICommand DelayCommand
{
get { return (ICommand)GetValue(DelayCommandProperty); }
set { SetValue(DelayCommandProperty, value); }
}
public static readonly DependencyProperty DelayCommandProperty =
DependencyProperty.Register("DelayCommand", typeof(ICommand), typeof(TouchButton), new PropertyMetadata(null, (d, e) => (d as TouchButton).OnDelayCommandChanged()));
public Duration DelayCommandDuration
{
get { return (Duration)GetValue(DelayCommandDurationProperty); }
set { SetValue(DelayCommandDurationProperty, value); }
}
public static readonly DependencyProperty DelayCommandDurationProperty =
DependencyProperty.Register("DelayCommandDuration", typeof(Duration), typeof(TouchButton), new PropertyMetadata(new Duration(TimeSpan.FromSeconds(0.5))));
#endregion
public TouchButton()
{
}
protected override void OnPreviewMouseDoubleClick(MouseButtonEventArgs e)
{
e.Handled = true;
}
protected override void OnPreviewMouseDown(MouseButtonEventArgs e)
{
if (e.ClickCount >= 2)
{
e.Handled = true;
return;
}
base.OnPreviewMouseDown(e);
}
protected override void OnClick()
{
if (IsEnabled)
{
base.OnClick();
PerformDelayCommand();
}
}
private async void PerformDelayCommand()
{
if (DelayCommand != null && !_executingDelayCommand)
{
try
{
_executingDelayCommand = true;
await Task.Delay(DelayCommandDuration.TimeSpan);
DelayCommand.Execute(CommandParameter);
}
catch (Exception)
{
throw;
}
finally
{
_executingDelayCommand = false;
}
}
}
private void OnDelayCommandChanged()
{
if (DelayCommand != null)
{
DelayCommand.CanExecuteChanged -= DelayCommand_CanExecuteChanged;
DelayCommand.CanExecuteChanged += DelayCommand_CanExecuteChanged;
}
}
private void DelayCommand_CanExecuteChanged(object sender, EventArgs e)
{
if (DelayCommand != null)
{
IsEnabled = DelayCommand.CanExecute(null);
}
}
static TouchButton()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(TouchButton), new FrameworkPropertyMetadata(typeof(TouchButton)));
}
}
}
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