1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using System.Drawing;
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24 | using System.Drawing.Drawing2D;
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25 | using System.Windows.Forms;
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26 |
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27 | namespace HeuristicLab.Visualization {
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28 | public abstract class RectangularPrimitiveBase : PrimitiveBase {
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29 | protected IGroup selectionRectangles;
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30 |
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31 | private PointD myLowerLeft;
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32 | public virtual PointD LowerLeft {
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33 | get { return myLowerLeft; }
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34 | }
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35 | private PointD myUpperRight;
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36 | public virtual PointD UpperRight {
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37 | get { return myUpperRight; }
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38 | }
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39 | public virtual SizeD Size {
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40 | get { return new SizeD(UpperRight.X - LowerLeft.X, UpperRight.Y - LowerLeft.Y); }
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41 | }
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42 |
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43 | protected RectangularPrimitiveBase(IChart chart, PointD lowerLeft, PointD upperRight)
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44 | : base(chart) {
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45 | selectionRectangles = new Group(chart);
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46 | SetPosition(lowerLeft, upperRight);
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47 | }
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48 | protected RectangularPrimitiveBase(IChart chart, double x1, double y1, double x2, double y2)
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49 | : this(chart, new PointD(x1, y1), new PointD(x2, y2)) {
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50 | }
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51 | protected RectangularPrimitiveBase(IChart chart, PointD lowerLeft, PointD upperRight, Pen pen, Brush brush)
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52 | : base(chart, pen, brush) {
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53 | selectionRectangles = new Group(chart);
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54 | SetPosition(lowerLeft, upperRight);
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55 | }
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56 | protected RectangularPrimitiveBase(IChart chart, double x1, double y1, double x2, double y2, Pen pen, Brush brush)
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57 | : this(chart, new PointD(x1, y1), new PointD(x2, y2), pen, brush) {
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58 | }
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59 |
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60 | public virtual void SetPosition(PointD lowerLeft, PointD upperRight) {
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61 | if ((lowerLeft.X > upperRight.X) || (lowerLeft.Y > upperRight.Y))
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62 | throw new ArgumentException("Lower left point is greater than upper right point");
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63 |
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64 | myLowerLeft = lowerLeft;
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65 | myUpperRight = upperRight;
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66 | OnUpdate();
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67 | }
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68 | public void SetPosition(double x1, double y1, double x2, double y2) {
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69 | SetPosition(new PointD(x1, y1), new PointD(x2, y2));
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70 | }
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71 | public override void Move(Offset delta) {
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72 | SetPosition(LowerLeft + delta, UpperRight + delta);
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73 | }
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74 |
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75 | public override bool ContainsPoint(PointD point) {
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76 | if (Selected) {
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77 | if (selectionRectangles.ContainsPoint(point)) return true;
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78 | }
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79 | return false;
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80 | }
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81 |
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82 | public override void MouseDrag(PointD point, Offset offset, MouseButtons button) {
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83 | if (button == MouseButtons.Left) {
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84 | if (Selected) {
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85 | if (selectionRectangles.ContainsPoint(point)) {
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86 | SelectionRectangle rect = (SelectionRectangle)selectionRectangles.GetPrimitive(point);
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87 | PointD point1 = PointD.Empty;
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88 | PointD point2 = PointD.Empty;
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89 | if (rect.Point == LowerLeft) {
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90 | point1 = LowerLeft + offset;
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91 | point2 = UpperRight;
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92 | } else if (rect.Point == UpperRight) {
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93 | point1 = LowerLeft;
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94 | point2 = UpperRight + offset;
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95 | } else if ((rect.Point.X == LowerLeft.X) && (rect.Point.Y == UpperRight.Y)) {
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96 | point1 = new PointD(LowerLeft.X + offset.DX, LowerLeft.Y);
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97 | point2 = new PointD(UpperRight.X, UpperRight.Y + offset.DY);
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98 | } else if ((rect.Point.X == UpperRight.X) && (rect.Point.Y == LowerLeft.Y)) {
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99 | point1 = new PointD(LowerLeft.X, LowerLeft.Y + offset.DY);
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100 | point2 = new PointD(UpperRight.X + offset.DX, UpperRight.Y);
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101 | }
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102 | SetPosition(Math.Min(point1.X, point2.X), Math.Min(point1.Y, point2.Y),
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103 | Math.Max(point1.X, point2.X), Math.Max(point1.Y, point2.Y));
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104 | } else {
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105 | base.MouseDrag(point, offset, button);
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106 | }
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107 | }
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108 | }
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109 | }
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110 |
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111 | public override Cursor GetCursor(PointD point) {
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112 | if (Selected) {
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113 | Cursor cursor = selectionRectangles.GetCursor(point);
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114 | if (cursor != null) return cursor;
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115 | }
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116 | return base.GetCursor(point);
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117 | }
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118 |
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119 | public override void PostDraw(Graphics graphics) {
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120 | selectionRectangles.Clear();
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121 | if (Selected) {
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122 | Pen pen = new Pen(Color.LightGray, 3);
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123 | pen.DashStyle = DashStyle.Dash;
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124 | Point p = Chart.TransformWorldToPixel(new PointD(LowerLeft.X, LowerLeft.Y + Size.Height));
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125 | Size s = Chart.TransformWorldToPixel(Size);
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126 | graphics.DrawRectangle(pen, p.X, p.Y, s.Width, s.Height);
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127 | selectionRectangles.Add(new SelectionRectangle(Chart, UpperRight.X, LowerLeft.Y, Cursors.SizeNWSE));
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128 | selectionRectangles.Add(new SelectionRectangle(Chart, LowerLeft.X, LowerLeft.Y, Cursors.SizeNESW));
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129 | selectionRectangles.Add(new SelectionRectangle(Chart, UpperRight.X, UpperRight.Y, Cursors.SizeNESW));
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130 | selectionRectangles.Add(new SelectionRectangle(Chart, LowerLeft.X, UpperRight.Y, Cursors.SizeNWSE));
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131 |
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132 | selectionRectangles.Draw(graphics);
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133 | }
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134 | }
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135 | }
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136 | }
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