Made the auto level indicator button navigate to the auto level properties panel.

ControlElements/AttentionGetter.cs

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+/*
+Copyright (c) 2014, Lars Brubaker
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+The views and conclusions contained in the software and documentation are those
+of the authors and should not be interpreted as representing official policies,
+either expressed or implied, of the FreeBSD Project.
+*/
+
+using MatterHackers.Agg;
+using MatterHackers.Agg.UI;
+using System.Diagnostics;
+
+namespace MatterHackers.MatterControl
+{
+	public class AttentionGetter
+	{
+		private double animationDelay = 1 / 20.0;
+		private int cycles = 3;
+		private double lightnessChange = 1;
+		private double pulseTime = .5;
+		private RGBA_Bytes startColor;
+		private Stopwatch timeSinceStart = null;
+		private GuiWidget widgetToHighlight;
+
+		public AttentionGetter(GuiWidget widgetToHighlight)
+		{
+			this.widgetToHighlight = widgetToHighlight;
+			widgetToHighlight.DrawAfter += ConnectToWidget;
+		}
+
+		private void ChangeBackgroundColor()
+		{
+			if (widgetToHighlight != null)
+			{
+				double time = timeSinceStart.Elapsed.TotalSeconds;
+				while (time > pulseTime)
+				{
+					time -= pulseTime;
+				}
+				time = time * 2 / pulseTime;
+				if (time > 1)
+				{
+					time = 1 - (time - 1);
+				}
+
+				double lightnessMultiplier = EaseInOutQuad(time);
+
+				widgetToHighlight.BackgroundColor = startColor.AdjustLightness(1 + lightnessChange * lightnessMultiplier).GetAsRGBA_Bytes();
+				if (widgetToHighlight.HasBeenClosed || timeSinceStart.Elapsed.TotalSeconds > cycles * pulseTime)
+				{
+					widgetToHighlight.BackgroundColor = startColor;
+					widgetToHighlight = null;
+					return;
+				}
+				UiThread.RunOnIdle(ChangeBackgroundColor, animationDelay);
+			}
+		}
+
+		private double EaseInOutQuad(double t)
+		{
+			if (t <= 0.5f)
+			{
+				return 2.0f * (t * t);
+			}
+
+			t -= 0.5f;
+			return 2.0f * t * (1.0f - t) + 0.5;
+		}
+
+		private void ConnectToWidget(GuiWidget drawingWidget, DrawEventArgs e)
+		{
+			GuiWidget parent = drawingWidget;
+			while (parent.BackgroundColor.Alpha0To255 == 0)
+			{
+				parent = parent.Parent;
+			}
+			startColor = parent.BackgroundColor;
+			timeSinceStart = Stopwatch.StartNew();
+			widgetToHighlight.DrawAfter -= ConnectToWidget;
+			UiThread.RunOnIdle(ChangeBackgroundColor, animationDelay);
+		}
+	}
+}