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