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1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 package com.nokia.s60tools.hticonnection.services.screencaptureservice; |
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19 |
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20 import java.io.ByteArrayInputStream; |
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21 |
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22 import org.eclipse.swt.graphics.Image; |
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23 import org.eclipse.swt.widgets.Display; |
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24 |
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25 import com.nokia.HTI.BaseService; |
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26 import com.nokia.HTI.IService; |
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27 import com.nokia.s60tools.hticonnection.core.AbstractRequest; |
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28 import com.nokia.s60tools.hticonnection.core.RequestResult; |
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29 import com.nokia.s60tools.hticonnection.resources.Messages; |
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30 |
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31 /** |
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32 * Callable object that can be used to wait for request to complete. |
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33 */ |
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34 public class ScreenCaptureRequest extends AbstractRequest{ |
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35 |
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36 /** |
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37 * Name used for request. |
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38 */ |
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39 private static final String REQUEST_NAME = "Screen capture"; //$NON-NLS-1$ |
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40 |
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41 // Settings for capture. |
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42 private final String imgMimeType; |
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43 private final int colorDepth; |
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44 private final long timeout; |
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45 |
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46 /** |
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47 * Capture a full screen. |
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48 * @param imgMimeType Image MIME type, e.g. "image/png", "image/gif", "image/jpeg" |
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49 * @param colorDepth Color depth e.g. ConnectionTestService.COLOR_DEPTH_ECOLOR64K. |
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50 * @param timeout Time that is waited for operation to complete. Use 0 for infinite wait. |
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51 */ |
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52 public ScreenCaptureRequest(String imgMimeType, int colorDepth, long timeout){ |
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53 super(REQUEST_NAME); |
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54 this.imgMimeType = imgMimeType; |
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55 this.colorDepth = colorDepth; |
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56 this.timeout = timeout; |
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57 } |
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58 |
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59 /* (non-Javadoc) |
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60 * @see com.nokia.s60tools.hticonnection.core.AbstractRequest#createService() |
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61 */ |
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62 public BaseService createService(){ |
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63 return new com.nokia.HTI.ScreenCapturingService.ScreenCapturingService(); |
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64 } |
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65 |
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66 /* (non-Javadoc) |
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67 * @see com.nokia.s60tools.hticonnection.core.AbstractRequest#invokeService(com.nokia.HTI.IService) |
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68 */ |
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69 public RequestResult invokeService(IService service) throws Exception{ |
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70 byte[] result = ((com.nokia.HTI.ScreenCapturingService.ScreenCapturingService)service) |
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71 .captureFullScreen(imgMimeType, (byte)colorDepth, timeout); |
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72 |
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73 // Testing image to prevent sending invalid data. |
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74 testImageData(result); |
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75 |
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76 return new RequestResult(result); |
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77 } |
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78 |
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79 /** |
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80 * Test data by creating image from data. |
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81 * @param imageData Image in binary format. |
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82 * @throws Exception Thrown if creating the image fails. |
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83 */ |
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84 private void testImageData(byte[] imageData) throws Exception { |
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85 try { |
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86 // Converting bytes to image to test that image is valid. |
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87 ByteArrayInputStream is = new ByteArrayInputStream(imageData); |
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88 Image image = new Image(Display.getDefault(), is); |
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89 image.dispose(); |
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90 } |
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91 catch(Exception e) { |
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92 // Couldn't create an image from data. Throwing an error. |
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93 // Connection will be reseted in abstractRequest after error. |
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94 throw new Exception(Messages.getString("ScreenCaptureRequest.InvalidImage_Exception_Msg")); //$NON-NLS-1$ |
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95 } |
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96 } |
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97 } |