Last change
on this file since 4021 was
1964,
checked in by mstoeger, 16 years ago
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moved the canvas and the basic types of shapes to their own namespace. #498
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File size:
1.0 KB
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1 | using System;
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2 | using System.Diagnostics;
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3 | using System.Drawing;
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4 | using System.Windows.Forms;
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5 |
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6 | namespace HeuristicLab.Visualization.Drawing {
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7 | public partial class CanvasUI : Control {
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8 | private readonly Canvas canvas = new Canvas();
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9 |
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10 | public CanvasUI() {
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11 | InitializeComponent();
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12 |
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13 | DoubleBuffered = true;
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14 | }
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15 |
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16 | public Canvas Canvas {
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17 | get { return canvas; }
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18 | }
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19 |
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20 | public event PaintEventHandler BeforePaint;
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21 |
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22 | protected override void OnPaint(PaintEventArgs pe) {
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23 | try {
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24 | FireBeforePaint(pe);
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25 |
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26 | Graphics g = pe.Graphics;
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27 |
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28 | canvas.Viewport = ClientRectangle;
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29 | canvas.Draw(g);
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30 |
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31 | base.OnPaint(pe);
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32 | } catch (Exception e) {
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33 | Trace.WriteLine(e);
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34 | }
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35 | }
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36 |
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37 | protected override void OnResize(EventArgs e) {
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38 | Invalidate();
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39 |
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40 | canvas.Viewport = ClientRectangle;
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41 |
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42 | base.OnResize(e);
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43 | }
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44 |
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45 | private void FireBeforePaint(PaintEventArgs e) {
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46 | if (BeforePaint != null)
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47 | BeforePaint(this, e);
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48 | }
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49 | }
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50 | } |
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