[1342] | 1 | using System;
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[873] | 2 | using System.Collections.Generic;
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[1337] | 3 | using System.Drawing;
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[866] | 4 |
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[1233] | 5 | namespace HeuristicLab.Visualization.Legend {
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[1342] | 6 | public enum LegendPosition {
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| 7 | Top,
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| 8 | Bottom,
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| 9 | Left,
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| 10 | Right
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| 11 | }
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| 12 |
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[1195] | 13 | public class LegendShape : WorldShape {
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[873] | 14 | private readonly IList<LegendItem> legendItems = new List<LegendItem>();
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[1342] | 15 | // legend draw default value: column
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| 16 | private bool row;
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| 17 | private bool top;
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[1337] | 18 |
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[1342] | 19 |
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[1337] | 20 | private Color color = Color.Blue;
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| 21 | private Font font = new Font("Arial", 8);
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| 22 |
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[1195] | 23 | public LegendShape() {
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[1049] | 24 | CreateLegend();
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[866] | 25 | }
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| 26 |
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[1342] | 27 | public bool Row {
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| 28 | set { row = value; }
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| 29 | get { return row; }
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| 30 | }
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| 31 |
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| 32 | public bool Top {
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| 33 | set { top = value; }
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| 34 | get { return top; }
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| 35 | }
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| 36 |
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[1049] | 37 | public void CreateLegend() {
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[1240] | 38 | ClearShapes();
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[1342] | 39 | double x = ClippingArea.X1;
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[1232] | 40 | double y = ClippingArea.Y2;
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[1342] | 41 | int numberOfItemsPerRow = 0;
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| 42 | int rowCounter = 0;
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| 43 | int rowsToDraw = 1;
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| 44 | if (row) {
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| 45 | numberOfItemsPerRow = (int)ClippingArea.Width/LegendItem.WIDTH;
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| 46 | int nrOfItems = legendItems.Count;
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| 47 | if (nrOfItems > numberOfItemsPerRow) {
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| 48 | int rest;
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| 49 | int value = Math.DivRem(nrOfItems, numberOfItemsPerRow, out rest);
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| 50 | rowsToDraw = value + rest;
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| 51 | }
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| 52 | if (!top)
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| 53 | y = 25*rowsToDraw;
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| 54 | }
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[1049] | 55 | foreach (LegendItem item in legendItems) {
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[1342] | 56 | if (!row) {
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| 57 | CreateColumn(item, y);
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| 58 | y -= 15;
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| 59 | } else {
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| 60 | if (rowCounter >= numberOfItemsPerRow) {
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| 61 | x = ClippingArea.X1;
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| 62 | y -= 25;
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| 63 | }
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| 64 | CreateRow(item, x, y);
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| 65 | x += LegendItem.WIDTH;
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| 66 | rowCounter++;
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| 67 | }
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[866] | 68 | }
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| 69 | }
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| 70 |
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[1342] | 71 | /// <summary>
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| 72 | /// draws the legend as a row at the top or bottom of the WorldShape
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| 73 | /// </summary>
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[1346] | 74 | /// <param name="item">the legenditem to draw</param>
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| 75 | /// <param name="x">x axis to draw the item</param>
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| 76 | /// <param name="y">y axis to draw the item</param>
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[1342] | 77 | private void CreateRow(LegendItem item, double x, double y) {
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| 78 | AddShape(new LineShape(x, y - 10, x + 20, y - 10, item.Color, item.Thickness, DrawingStyle.Solid));
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| 79 | AddShape(new TextShape(x + 25, y, item.Label, Font, Color));
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| 80 | }
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| 81 |
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| 82 | /// <summary>
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| 83 | /// draws the legend as a column on the right or left side of the WorldShape
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| 84 | /// </summary>
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[1346] | 85 | /// <param name="item">the legenditem to draw</param>
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| 86 | /// <param name="y">y axis to draw the item</param>
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[1342] | 87 | private void CreateColumn(LegendItem item, double y) {
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| 88 | AddShape(new LineShape(10, y - 10, 30, y - 10, item.Color, item.Thickness, DrawingStyle.Solid));
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| 89 | AddShape(new TextShape(35, y, item.Label, Font, Color));
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| 90 | }
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| 91 |
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[1346] | 92 | /// <summary>
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| 93 | /// adds a legenditem to the items list
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| 94 | /// </summary>
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| 95 | /// <param name="item">legenditem to add</param>
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[873] | 96 | public void AddLegendItem(LegendItem item) {
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| 97 | legendItems.Add(item);
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| 98 | }
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| 99 |
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[1346] | 100 | /// <summary>
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| 101 | /// removes a legenditem from the items list
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| 102 | /// </summary>
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| 103 | /// <param name="item">legenditem to remove</param>
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[873] | 104 | public void RemoveLegendItem(LegendItem item) {
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| 105 | legendItems.Remove(item);
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| 106 | }
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| 107 |
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[1346] | 108 | /// <summary>
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| 109 | /// deletes the legenditem list
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| 110 | /// </summary>
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[873] | 111 | public void ClearLegendItems() {
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| 112 | legendItems.Clear();
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| 113 | }
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[1337] | 114 |
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| 115 | public Color Color {
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| 116 | get { return color; }
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| 117 | set {
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| 118 | color = value;
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| 119 | UpdateTextShapes();
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| 120 | }
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| 121 | }
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| 122 |
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| 123 | public Font Font {
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| 124 | get { return font; }
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| 125 | set {
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| 126 | font = value;
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| 127 | UpdateTextShapes();
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| 128 | }
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| 129 | }
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| 130 |
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[1346] | 131 | /// <summary>
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| 132 | /// updates the font settings of the legend
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| 133 | /// </summary>
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[1337] | 134 | private void UpdateTextShapes() {
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| 135 | foreach (IShape shape in shapes) {
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| 136 | TextShape textShape = shape as TextShape;
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| 137 |
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| 138 | if (textShape != null) {
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| 139 | textShape.Font = font;
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| 140 | textShape.Color = color;
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| 141 | }
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| 142 | }
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| 143 | }
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[866] | 144 | }
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[1342] | 145 | }
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