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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2004 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * D Port
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11 * Jesse Phillips <Jesse.K.Phillips+D> gmail.com
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12 *******************************************************************************/
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13 module snippets.composite.Snippit9;
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14
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15 /*
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16 * Composite example snippet: scroll a child control automatically
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17 *
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18 * For a list of all DWT example snippets see
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19 * http://www.eclipse.org/swt/snippets/
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20 */
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21 import dwt.DWT;
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22 import dwt.events.PaintListener;
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23 import dwt.graphics.Color;
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24 import dwt.graphics.Point;
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25 import dwt.graphics.Rectangle;
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26 import dwt.widgets.Composite;
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27 import dwt.widgets.Display;
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28 import dwt.widgets.Event;
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29 import dwt.widgets.Listener;
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30 import dwt.widgets.ScrollBar;
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31 import dwt.widgets.Shell;
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32 import dwt.dwthelper.utils;
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33
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34 void main () {
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35 auto display = new Display ();
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36 auto shell = new Shell
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37 (display, DWT.SHELL_TRIM | DWT.H_SCROLL | DWT.V_SCROLL);
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38 auto composite = new Composite (shell, DWT.BORDER);
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39 composite.setSize (700, 600);
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40 auto red = display.getSystemColor (DWT.COLOR_RED);
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41 composite.addPaintListener (new class PaintListener {
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42 public void paintControl (PaintEvent e) {
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43 e.gc.setBackground (red);
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44 e.gc.fillOval (5, 5, 690, 590);
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45 }
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46 });
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47 auto hBar = shell.getHorizontalBar ();
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48 hBar.addListener (DWT.Selection, new class Listener {
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49 public void handleEvent (Event e) {
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50 auto location = composite.getLocation ();
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51 location.x = -hBar.getSelection ();
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52 composite.setLocation (location);
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53 }
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54 });
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55 ScrollBar vBar = shell.getVerticalBar ();
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56 vBar.addListener (DWT.Selection, new class Listener {
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57 public void handleEvent (Event e) {
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58 Point location = composite.getLocation ();
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59 location.y = -vBar.getSelection ();
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60 composite.setLocation (location);
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61 }
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62 });
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63 shell.addListener (DWT.Resize, new class Listener {
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64 public void handleEvent (Event e) {
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65 Point size = composite.getSize ();
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66 Rectangle rect = shell.getClientArea ();
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67 hBar.setMaximum (size.x);
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68 vBar.setMaximum (size.y);
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69 hBar.setThumb (Math.min (size.x, rect.width));
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70 vBar.setThumb (Math.min (size.y, rect.height));
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71 int hPage = size.x - rect.width;
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72 int vPage = size.y - rect.height;
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73 int hSelection = hBar.getSelection ();
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74 int vSelection = vBar.getSelection ();
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75 Point location = composite.getLocation ();
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76 if (hSelection >= hPage) {
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77 if (hPage <= 0) hSelection = 0;
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78 location.x = -hSelection;
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79 }
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80 if (vSelection >= vPage) {
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81 if (vPage <= 0) vSelection = 0;
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82 location.y = -vSelection;
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83 }
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84 composite.setLocation (location);
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85 }
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86 });
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87 shell.open ();
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88 while (!shell.isDisposed()) {
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89 if (!display.readAndDispatch ()) display.sleep ();
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90 }
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91 display.dispose ();
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92 }
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