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Viewing changes to external/xwt/Samples/MonoDevelop.Components.Chart/IntegerAxis.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/xwt/Samples/MonoDevelop.Components.Chart/IntegerAxis.cs
 
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//
 
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// IntegerAxis.cs
 
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//
 
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// Author:
 
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//   Lluis Sanchez Gual
 
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//
 
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// Copyright (C) 2005 Xamarin, Inc (http://www.xamarin.com)
 
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//
 
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// Permission is hereby granted, free of charge, to any person obtaining
 
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// a copy of this software and associated documentation files (the
 
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// "Software"), to deal in the Software without restriction, including
 
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// without limitation the rights to use, copy, modify, merge, publish,
 
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// distribute, sublicense, and/or sell copies of the Software, and to
 
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// permit persons to whom the Software is furnished to do so, subject to
 
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// the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be
 
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// included in all copies or substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
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//
 
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using System;
 
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namespace MonoDevelop.Components.Chart
 
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{
 
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        public class IntegerAxis: Axis
 
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        {
 
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                public IntegerAxis ()
 
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                {
 
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                }
 
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                public IntegerAxis (bool showLabels): base (showLabels)
 
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                {
 
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                }
 
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                protected override TickEnumerator CreateTickEnumerator (double minTickStep)
 
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                {
 
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                        long val;
 
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                        unchecked {
 
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                                val = (long) minTickStep;
 
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                                long red = 10;
 
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                                while (val > red)
 
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                                        red = red * 10;
 
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                                long scale;
 
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                                if (val <= 1)
 
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                                        scale = 1;
 
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                                else if (val > red / 2)
 
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                                        scale = red;
 
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                                else if (val > red / 4)
 
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                                        scale = red / 2;
 
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                                else
 
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                                        scale = red / 4;
 
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                                return new IntegerTickEnumerator (scale);
 
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                        }
 
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                }
 
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        }
 
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        internal class IntegerTickEnumerator: TickEnumerator
 
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        {
 
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                long scale;
 
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                long current;
 
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                public IntegerTickEnumerator (long scale)
 
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                {
 
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                        this.scale = scale;
 
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                }
 
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                public override void Init (double startValue)
 
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                {
 
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                        current = (((long)startValue) / scale) * scale;
 
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                }
 
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                public override void MoveNext ()
 
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                {
 
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                        current += scale;
 
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                }
 
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                public override void MovePrevious ()
 
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                {
 
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                        current -= scale;
 
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                }
 
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                public override double CurrentValue {
 
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                        get { return (double) current; }
 
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                }
 
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        }
 
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}