Last change
on this file since 1055 was
1055,
checked in by bspisic, 16 years ago
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#424
Did some code refactoring (created concrete MouseEventListeners)
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File size:
1.4 KB
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1 | using System.Drawing;
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2 | using System.Windows.Forms;
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3 |
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4 | namespace HeuristicLab.Visualization {
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5 | public class ZoomListener : IMouseEventListener {
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6 | private readonly Point startPoint;
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7 |
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8 | public event DrawRectangleHandler DrawRectangle;
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9 |
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10 | public ZoomListener(Point startPoint) {
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11 | this.startPoint = startPoint;
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12 | }
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13 |
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14 | #region IMouseEventListener Members
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15 |
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16 | public event MouseEventHandler OnMouseMove;
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17 | public event MouseEventHandler OnMouseUp;
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18 |
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19 | public void MouseMove(object sender, MouseEventArgs e) {
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20 | Rectangle r = new Rectangle();
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21 | Point actualPoint = e.Location;
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22 |
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23 | if (startPoint.X < actualPoint.X) {
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24 | r.X = startPoint.X;
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25 | r.Width = actualPoint.X - startPoint.X;
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26 | } else {
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27 | r.X = actualPoint.X;
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28 | r.Width = startPoint.X - actualPoint.X;
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29 | }
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30 |
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31 | if (startPoint.Y < actualPoint.Y) {
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32 | r.Y = startPoint.Y;
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33 | r.Height = actualPoint.Y - startPoint.Y;
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34 | } else {
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35 | r.Y = actualPoint.Y;
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36 | r.Height = startPoint.Y - actualPoint.Y;
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37 | }
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38 |
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39 | if(DrawRectangle != null) {
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40 | DrawRectangle(r);
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41 | }
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42 |
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43 | if (OnMouseMove != null) {
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44 | OnMouseMove(sender, e);
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45 | }
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46 | }
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47 |
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48 | public void MouseUp(object sender, MouseEventArgs e) {
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49 | if (OnMouseUp != null) {
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50 | OnMouseUp(sender, e);
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51 | }
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52 | }
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53 |
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54 | #endregion
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55 | }
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56 | } |
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