altosuilib: New line styles and colors for graphs. Selectable line width

[fw/altos] / altosuilib / AltosUILineStyle.java

diff --git a/altosuilib/AltosUILineStyle.java b/altosuilib/AltosUILineStyle.java
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+++ b/altosuilib/AltosUILineStyle.java
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+/*
+ * Copyright © 2017 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ */
+
+package org.altusmetrum.altosuilib_12;
+
+import java.io.*;
+import java.util.ArrayList;
+
+import java.awt.*;
+import javax.swing.*;
+import org.altusmetrum.altoslib_12.*;
+
+import org.jfree.ui.*;
+import org.jfree.chart.*;
+import org.jfree.chart.plot.*;
+import org.jfree.chart.axis.*;
+import org.jfree.chart.renderer.*;
+import org.jfree.chart.renderer.xy.*;
+import org.jfree.chart.labels.*;
+import org.jfree.data.xy.*;
+import org.jfree.data.*;
+
+public class AltosUILineStyle {
+       public Color    color;
+       public float[]  dash;
+
+       static private Color color(int r, int g, int b) {
+               return new Color(r,g,b);
+       }
+
+       static final private Color[] colors = {
+               new Color(0,0,0),
+               new Color(230,0,0),     // red
+               new Color(216,103,0),   // orange
+               new Color(200,200,0),   // yellow
+               new Color(0,180,0),     // green
+               new Color(0,140,140),   // cyan
+               new Color(130,0,0),     // dark red
+               new Color(0,100,0),     // dark green
+               new Color(0,0,255),     // blue
+               new Color(140,0,140),   // magenta
+               new Color(150,150,150), // gray
+       };
+
+       static final private float[][] dashes = {
+               { 0 },
+               { 2, 4 },
+               { 4, 4 },
+               { 6, 4 },
+               { 6, 4, 2, 4 }
+       };
+
+       static int color_index, dash_index;
+
+       public AltosUILineStyle () {
+               color = colors[color_index];
+               dash = dashes[dash_index];
+               color_index = (color_index + 1) % colors.length;
+               if (color_index == 0) {
+                       dash_index = (dash_index + 1) % dashes.length;
+                       if (dash_index == 0)
+                               System.out.printf("too many line styles\n");
+               }
+       }
+
+       public AltosUILineStyle(int index) {
+               index = index % (colors.length * dashes.length);
+               int c = index % colors.length;
+               int d = index / colors.length;
+               color = colors[c];
+               dash = dashes[d];
+       }
+}