Mercurial > hg > Applications > TightVNC_orginal
annotate src/main/java/com/glavsoft/rfb/encoding/decoder/RichCursorDecoder.java @ 52:472a9bcacb21 draft default tip
TightVNC 2.7.1.0
author | you@cr.ie.u-ryukyu.ac.jp |
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date | Wed, 07 Aug 2013 19:01:17 +0900 |
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52 | 1 // Copyright (C) 2010, 2011, 2012, 2013 GlavSoft LLC. |
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2 // All rights reserved. |
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3 // |
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4 //------------------------------------------------------------------------- |
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5 // This file is part of the TightVNC software. Please visit our Web site: |
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6 // |
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7 // http://www.tightvnc.com/ |
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8 // |
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9 // This program is free software; you can redistribute it and/or modify |
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10 // it under the terms of the GNU General Public License as published by |
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11 // the Free Software Foundation; either version 2 of the License, or |
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12 // (at your option) any later version. |
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13 // |
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14 // This program is distributed in the hope that it will be useful, |
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15 // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 // GNU General Public License for more details. |
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18 // |
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19 // You should have received a copy of the GNU General Public License along |
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20 // with this program; if not, write to the Free Software Foundation, Inc., |
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21 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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22 //------------------------------------------------------------------------- |
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23 // |
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24 |
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25 package com.glavsoft.rfb.encoding.decoder; |
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26 |
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27 import com.glavsoft.drawing.Renderer; |
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28 import com.glavsoft.exceptions.TransportException; |
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29 import com.glavsoft.transport.Reader; |
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30 |
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31 /** |
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32 * Decoder for RichCursor pseudo encoding |
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33 */ |
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34 public class RichCursorDecoder extends Decoder { |
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35 private static RichCursorDecoder instance = new RichCursorDecoder(); |
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36 |
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37 private RichCursorDecoder() { /*empty*/ } |
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38 |
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39 public static RichCursorDecoder getInstance() { |
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40 return instance; |
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41 } |
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42 |
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43 @Override |
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44 public void decode(Reader reader, Renderer renderer, |
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45 FramebufferUpdateRectangle rect) throws TransportException { |
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46 int bytesPerPixel = renderer.getBytesPerPixel(); |
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47 int length = rect.width * rect.height * bytesPerPixel; |
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48 if (0 == length) |
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49 return; |
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50 byte[] buffer = ByteBuffer.getInstance().getBuffer(length); |
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51 reader.readBytes(buffer, 0, length); |
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52 |
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53 StringBuilder sb = new StringBuilder(" "); |
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54 for (int i=0; i<length; ++i) { |
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55 sb.append(Integer.toHexString(buffer[i]&0xff)).append(" "); |
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56 } |
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57 int scanLine = (int) Math.floor((rect.width + 7) / 8); |
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58 byte[] bitmask = new byte[scanLine * rect.height]; |
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59 reader.readBytes(bitmask, 0, bitmask.length); |
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60 |
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61 sb = new StringBuilder(" "); |
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62 for (int i=0; i<bitmask.length; ++i) { |
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63 sb.append(Integer.toHexString(bitmask[i]&0xff)).append(" "); |
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64 } |
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65 int[] cursorPixels = new int[rect.width * rect.height]; |
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66 for (int y = 0; y < rect.height; ++y) { |
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67 for (int x = 0; x < rect.width; ++x) { |
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68 int offset = y * rect.width + x; |
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69 cursorPixels[offset] = isBitSet(bitmask[y * scanLine + x / 8], x % 8) ? |
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70 0xFF000000 | renderer.getPixelColor(buffer, offset * bytesPerPixel) : |
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71 0; // transparent |
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72 } |
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73 } |
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74 renderer.createCursor(cursorPixels, rect); |
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75 } |
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76 |
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77 private boolean isBitSet(byte aByte, int index) { |
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78 return (aByte & 1 << 7 - index) > 0; |
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79 } |
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80 |
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81 } |