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77 lines
2.9 KiB
77 lines
2.9 KiB
// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of this
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// software and associated documentation files (the "Software"), to deal in the Software
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// without restriction, including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
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// to whom the Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all copies or
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// substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
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// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Documents;
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using System.Windows.Media;
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using System.Windows.Media.Animation;
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using System.Windows.Threading;
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using ICSharpCode.AvalonEdit.Editing;
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namespace ICSharpCode.ILSpy.TextView
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{
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/// <summary>
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/// Animated rectangle around the caret.
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/// This is used after clicking links that lead to another location within the text view.
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/// </summary>
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sealed class CaretHighlightAdorner : Adorner
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{
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readonly Pen pen;
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readonly RectangleGeometry geometry;
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public CaretHighlightAdorner(TextArea textArea)
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: base(textArea.TextView)
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{
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Rect min = textArea.Caret.CalculateCaretRectangle();
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min.Offset(-textArea.TextView.ScrollOffset);
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Rect max = min;
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double size = Math.Max(min.Width, min.Height) * 0.25;
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max.Inflate(size, size);
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pen = new Pen(TextBlock.GetForeground(textArea.TextView).Clone(), 1);
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geometry = new RectangleGeometry(min, 2, 2);
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geometry.BeginAnimation(RectangleGeometry.RectProperty, new RectAnimation(min, max, new Duration(TimeSpan.FromMilliseconds(300))) { AutoReverse = true });
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pen.Brush.BeginAnimation(Brush.OpacityProperty, new DoubleAnimation(1, 0, new Duration(TimeSpan.FromMilliseconds(200))) { BeginTime = TimeSpan.FromMilliseconds(450) });
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}
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public static void DisplayCaretHighlightAnimation(TextArea textArea)
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{
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AdornerLayer layer = AdornerLayer.GetAdornerLayer(textArea.TextView);
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CaretHighlightAdorner adorner = new CaretHighlightAdorner(textArea);
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layer.Add(adorner);
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DispatcherTimer timer = new DispatcherTimer();
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timer.Interval = TimeSpan.FromSeconds(1);
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timer.Tick += delegate {
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timer.Stop();
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layer.Remove(adorner);
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};
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timer.Start();
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}
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protected override void OnRender(DrawingContext drawingContext)
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{
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drawingContext.DrawGeometry(null, pen, geometry);
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}
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}
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}
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