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CopyRectDecoder.cxx 2.3KB

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  1. /* Copyright 2014 Pierre Ossman <ossman@cendio.se> for Cendio AB
  2. *
  3. * This is free software; you can redistribute it and/or modify
  4. * it under the terms of the GNU General Public License as published by
  5. * the Free Software Foundation; either version 2 of the License, or
  6. * (at your option) any later version.
  7. *
  8. * This software is distributed in the hope that it will be useful,
  9. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11. * GNU General Public License for more details.
  12. *
  13. * You should have received a copy of the GNU General Public License
  14. * along with this software; if not, write to the Free Software
  15. * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  16. * USA.
  17. */
  18. #ifdef HAVE_CONFIG_H
  19. #include <config.h>
  20. #endif
  21. #include <rdr/MemInStream.h>
  22. #include <rdr/OutStream.h>
  23. #include <rfb/PixelBuffer.h>
  24. #include <rfb/Region.h>
  25. #include <rfb/CopyRectDecoder.h>
  26. using namespace rfb;
  27. CopyRectDecoder::CopyRectDecoder() : Decoder(DecoderPlain)
  28. {
  29. }
  30. CopyRectDecoder::~CopyRectDecoder()
  31. {
  32. }
  33. bool CopyRectDecoder::readRect(const Rect& /*r*/,
  34. rdr::InStream* is,
  35. const ServerParams& /*server*/,
  36. rdr::OutStream* os)
  37. {
  38. if (!is->hasData(4))
  39. return false;
  40. os->copyBytes(is, 4);
  41. return true;
  42. }
  43. void CopyRectDecoder::getAffectedRegion(const Rect& rect,
  44. const uint8_t* buffer,
  45. size_t buflen,
  46. const ServerParams& server,
  47. Region* region)
  48. {
  49. rdr::MemInStream is(buffer, buflen);
  50. int srcX = is.readU16();
  51. int srcY = is.readU16();
  52. Decoder::getAffectedRegion(rect, buffer, buflen, server, region);
  53. region->assign_union(Region(rect.translate(Point(srcX-rect.tl.x,
  54. srcY-rect.tl.y))));
  55. }
  56. void CopyRectDecoder::decodeRect(const Rect& r, const uint8_t* buffer,
  57. size_t buflen,
  58. const ServerParams& /*server*/,
  59. ModifiablePixelBuffer* pb)
  60. {
  61. rdr::MemInStream is(buffer, buflen);
  62. int srcX = is.readU16();
  63. int srcY = is.readU16();
  64. pb->copyRect(r, Point(r.tl.x-srcX, r.tl.y-srcY));
  65. }