IHtmlPresenter.cs « Html « Tango.MachineStudio.Common « MachineStudio « Visual_Studio « Software - Tango - Twine softwares

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path: root/Software/Visual_Studio/MachineStudio/Tango.MachineStudio.Common/Html/IHtmlPresenter.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL.Entities;

namespace Tango.MachineStudio.Common.Html
{
    public interface IHtmlPresenter
    {
        bool DisplayHtml(HtmlPage html);
    }
}

olor: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */

// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Threading;

using Tango.Scripting.Editors.Rendering;
using Tango.Scripting.Editors.Utils;

namespace Tango.Scripting.Editors.Editing
{
	sealed class CaretLayer : Layer
	{
		bool isVisible;
		Rect caretRectangle;
		
		DispatcherTimer caretBlinkTimer = new DispatcherTimer();
		bool blink;
		
		public CaretLayer(TextView textView) : base(textView, KnownLayer.Caret)
		{
			this.IsHitTestVisible = false;
			caretBlinkTimer.Tick += new EventHandler(caretBlinkTimer_Tick);
		}

		void caretBlinkTimer_Tick(object sender, EventArgs e)
		{
			blink = !blink;
			InvalidateVisual();
		}
		
		public void Show(Rect caretRectangle)
		{
			this.caretRectangle = caretRectangle;
			this.isVisible = true;
			StartBlinkAnimation();
			InvalidateVisual();
		}
		
		public void Hide()
		{
			if (isVisible) {
				isVisible = false;
				StopBlinkAnimation();
				InvalidateVisual();
			}
		}
		
		void StartBlinkAnimation()
		{
			TimeSpan blinkTime = Win32.CaretBlinkTime;
			blink = true; // the caret should visible initially
			// This is important if blinking is disabled (system reports a negative blinkTime)
			if (blinkTime.TotalMilliseconds > 0) {
				caretBlinkTimer.Interval = blinkTime;
				caretBlinkTimer.Start();
			}
		}
		
		void StopBlinkAnimation()
		{
			caretBlinkTimer.Stop();
		}
		
		internal Brush CaretBrush;
		
		protected override void OnRender(DrawingContext drawingContext)
		{
			base.OnRender(drawingContext);
			if (isVisible && blink) {
				Brush caretBrush = this.CaretBrush;
				if (caretBrush == null)
					caretBrush = (Brush)textView.GetValue(TextBlock.ForegroundProperty);
				Rect r = new Rect(caretRectangle.X - textView.HorizontalOffset,
				                  caretRectangle.Y - textView.VerticalOffset,
				                  caretRectangle.Width,
				                  caretRectangle.Height);
				drawingContext.DrawRectangle(caretBrush, null, PixelSnapHelpers.Round(r, PixelSnapHelpers.GetPixelSize(this)));
			}
		}
	}
}