packages/MaterialDesignThemes.2.5.1/src/net45/Transitions/Transitioner.cs

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using System;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Input;

namespace MaterialDesignThemes.Wpf.Transitions
{
    /// <summary>
    /// The transitioner provides an easy way to move between content with a default in-place circular transition.
    /// </summary>
    public class Transitioner : Selector, IZIndexController
    {
        private Point? _nextTransitionOrigin;

        static Transitioner()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(Transitioner), new FrameworkPropertyMetadata(typeof(Transitioner)));
        }

        /// <summary>
        /// Causes the the next slide to be displayed (affectively increments <see cref="Selector.SelectedIndex"/>).
        /// </summary>
        public static RoutedCommand MoveNextCommand = new RoutedCommand();

        /// <summary>
        /// Causes the the previous slide to be displayed (affectively decrements <see cref="Selector.SelectedIndex"/>).
        /// </summary>
        public static RoutedCommand MovePreviousCommand = new RoutedCommand();

        /// <summary>
        /// Moves to the first slide.
        /// </summary>
        public static RoutedCommand MoveFirstCommand = new RoutedCommand();

        /// <summary>
        /// Moves to the last slide.
        /// </summary>
        public static RoutedCommand MoveLastCommand = new RoutedCommand();

        public static readonly DependencyProperty AutoApplyTransitionOriginsProperty = DependencyProperty.Register(
            "AutoApplyTransitionOrigins", typeof(bool), typeof(Transitioner), new PropertyMetadata(default(bool)));

        /// <summary>
        /// If enabled, transition origins will be applied to wipes, according to where a transition was triggered from.  For example, the mouse point where a user clicks a button.
        /// </summary>
        public bool AutoApplyTransitionOrigins
        {
            get => (bool)GetValue(AutoApplyTransitionOriginsProperty);
            set => SetValue(AutoApplyTransitionOriginsProperty, value);
        }

        public static readonly DependencyProperty DefaultTransitionOriginProperty = DependencyProperty.Register(
            "DefaultTransitionOrigin", typeof(Point), typeof(Transitioner), new PropertyMetadata(new Point(0.5, 0.5)));

        public Point DefaultTransitionOrigin
        {
            get => (Point)GetValue(DefaultTransitionOriginProperty);
            set => SetValue(DefaultTransitionOriginProperty, value);