nxmu_requestbkgd.c 4.5 KB

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  1. /****************************************************************************
  2. * graphics/nxmu/nxmu_requestbkgd.c
  3. *
  4. * Copyright (C) 2008-2009, 2011 Gregory Nutt. All rights reserved.
  5. * Author: Gregory Nutt <gnutt@nuttx.org>
  6. *
  7. * Redistribution and use in source and binary forms, with or without
  8. * modification, are permitted provided that the following conditions
  9. * are met:
  10. *
  11. * 1. Redistributions of source code must retain the above copyright
  12. * notice, this list of conditions and the following disclaimer.
  13. * 2. Redistributions in binary form must reproduce the above copyright
  14. * notice, this list of conditions and the following disclaimer in
  15. * the documentation and/or other materials provided with the
  16. * distribution.
  17. * 3. Neither the name NuttX nor the names of its contributors may be
  18. * used to endorse or promote products derived from this software
  19. * without specific prior written permission.
  20. *
  21. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24. * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  25. * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26. * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27. * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  28. * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29. * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  31. * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32. * POSSIBILITY OF SUCH DAMAGE.
  33. *
  34. ****************************************************************************/
  35. /****************************************************************************
  36. * Included Files
  37. ****************************************************************************/
  38. #include <nuttx/config.h>
  39. #include <errno.h>
  40. #include <debug.h>
  41. #include <nuttx/nx/nx.h>
  42. #include "nxfe.h"
  43. /****************************************************************************
  44. * Pre-processor Definitions
  45. ****************************************************************************/
  46. /****************************************************************************
  47. * Private Types
  48. ****************************************************************************/
  49. /****************************************************************************
  50. * Private Data
  51. ****************************************************************************/
  52. /****************************************************************************
  53. * Public Data
  54. ****************************************************************************/
  55. /****************************************************************************
  56. * Private Functions
  57. ****************************************************************************/
  58. /****************************************************************************
  59. * Public Functions
  60. ****************************************************************************/
  61. /****************************************************************************
  62. * Name: nxmu_requestbkgd
  63. *
  64. * Description:
  65. * Perform the server-side operation for the nx_requestbkgd operation:
  66. * Give the client control of the background window connection and receipt
  67. * of all background window callbacks.
  68. *
  69. * conn - The client containing connection information [IN]
  70. * be - The server state structure [IN]
  71. * cb - Callbacks used to process window events
  72. * arg - User provided argument (see nx_openwindow, nx_constructwindow)
  73. *
  74. * Return:
  75. * None
  76. *
  77. ****************************************************************************/
  78. void nxmu_requestbkgd(FAR struct nxfe_conn_s *conn,
  79. FAR struct nxbe_state_s *be,
  80. FAR const struct nx_callback_s *cb,
  81. FAR void *arg)
  82. {
  83. #ifdef CONFIG_DEBUG_FEATURES
  84. if (!conn || !be || !cb)
  85. {
  86. errno = EINVAL;
  87. }
  88. #endif
  89. /* Set the client's callback vtable and and replace the server
  90. * connection with the clients connection.
  91. */
  92. be->bkgd.cb = cb;
  93. be->bkgd.arg = arg;
  94. be->bkgd.conn = conn;
  95. /* Report the size/position of the background window to the client */
  96. nxfe_reportposition((NXWINDOW)&be->bkgd);
  97. /* Redraw the background window */
  98. nxfe_redrawreq(&be->bkgd, &be->bkgd.bounds);
  99. /* Provide the mouse settings */
  100. #ifdef CONFIG_NX_XYINPUT
  101. nxmu_mousereport(&be->bkgd);
  102. #endif
  103. }