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using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Tango.SharedUI.Helpers;
namespace Tango.MachineStudio.Common.Controls
{
/// <summary>
/// Represents an MDI-style container
/// </summary>
/// <seealso cref="System.Windows.Controls.UserControl" />
/// <seealso cref="System.Windows.Markup.IComponentConnector" />
/// <seealso cref="System.Windows.Markup.IStyleConnector" />
public partial class MdiContainerControl : UserControl
{
private const int MIN_SIZE = 200;
public MdiContainerControl()
{
InitializeComponent();
}
public IEnumerable ItemsSource
{
get { return (IEnumerable)GetValue(ItemsSourceProperty); }
set { SetValue(ItemsSourceProperty, value); }
}
public static readonly DependencyProperty ItemsSourceProperty =
DependencyProperty.Register("ItemsSource", typeof(IEnumerable), typeof(MdiContainerControl), new PropertyMetadata(null));
private void OnControlDragging(object sender, DragDeltaEventArgs e)
{
var mdiControl = GetSenderTag<MdiChild>(sender);
mdiControl.Location = new Point(mdiControl.Location.X + e.HorizontalChange, mdiControl.Location.Y + e.VerticalChange);
FitCanvas();
}
private T GetSenderTag<T>(object sender) where T : class
{
return (T)((sender as FrameworkElement).Tag);
}
private void FitCanvas()
{
Canvas canvas = GetCanvas();
canvas.Width = canvas.Children.OfType<FrameworkElement>().Max(x => Canvas.GetLeft(x) + x.ActualWidth);
canvas.Height = canvas.Children.OfType<FrameworkElement>().Max(x => Canvas.GetTop(x) + x.ActualHeight);
}
private Canvas GetCanvas()
{
return itemsControl.FindChild<Canvas>("canvas");
}
private void OnControlMouseDown(object sender, MouseButtonEventArgs e)
{
Canvas.SetZIndex(sender as FrameworkElement, GetCanvas().Children.OfType<FrameworkElement>().Max(x => Canvas.GetZIndex(x) + 1));
}
private void OnControlSizeRight(object sender, DragDeltaEventArgs e)
{
var mdiControl = GetSenderTag<MdiChild>(sender);
if (double.IsNaN(mdiControl.View.Width)) mdiControl.View.Width = mdiControl.View.ActualWidth;
if (mdiControl.View.Width + e.HorizontalChange > MIN_SIZE) mdiControl.View.Width += e.HorizontalChange;
}
private void OnControlSizeBottom(object sender, DragDeltaEventArgs e)
{
var mdiControl = GetSenderTag<MdiChild>(sender);
if (double.IsNaN(mdiControl.View.Height)) mdiControl.View.Height = mdiControl.View.ActualHeight;
if (mdiControl.View.Height + e.VerticalChange > MIN_SIZE) mdiControl.View.Height += e.VerticalChange;
}
private void OnControlResize(object sender, DragDeltaEventArgs e)
{
var mdiControl = GetSenderTag<MdiChild>(sender);
if (double.IsNaN(mdiControl.View.Height)) mdiControl.View.Height = mdiControl.View.ActualHeight;
if (double.IsNaN(mdiControl.View.Width)) mdiControl.View.Width = mdiControl.View.ActualWidth;
if (mdiControl.View.Height + e.VerticalChange > MIN_SIZE) mdiControl.View.Height += e.VerticalChange;
if (mdiControl.View.Width + e.HorizontalChange > MIN_SIZE) mdiControl.View.Width += e.HorizontalChange;
}
private void OnControlClosed(object sender, RoutedEventArgs e)
{
(ItemsSource as IList).Remove(GetSenderTag<MdiChild>(sender));
}
}
}
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