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- /****************************************************************************
- * graphics/nxsu/nx_openwindow.c
- *
- * Copyright (C) 2008-2009, 2012-2013 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <stdlib.h>
- #include <errno.h>
- #include <debug.h>
- #include <nuttx/kmalloc.h>
- #include <nuttx/nx/nx.h>
- #include "nxfe.h"
- /****************************************************************************
- * Pre-Processor Definitions
- ****************************************************************************/
- /****************************************************************************
- * Private Types
- ****************************************************************************/
- /****************************************************************************
- * Private Data
- ****************************************************************************/
- /****************************************************************************
- * Public Data
- ****************************************************************************/
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxfe_constructwindow
- *
- * Description:
- * This function is the same a nx_openwindow EXCEPT that the client provides
- * the window structure instance. nx_constructwindow will initialize the
- * the pre-allocated window structure for use by NX. This function is
- * provided in addition to nx_open window in order to support a kind of
- * inheritance: The caller's window structure may include extensions that
- * are not visible to NX.
- *
- * NOTE: wnd must have been allocated using kmalloc() (or related allocators)
- * Once provided to nxfe_constructwindow() that memory is owned and managed
- * by NX. On certain error conditions or when the window is closed, NX will
- * free the window.
- *
- * Input Parameters:
- * handle - The handle returned by nx_connect
- * wnd - The pre-allocated window structure.
- * cb - Callbacks used to process window events
- * arg - User provided value that will be returned with NX callbacks.
- *
- * Return:
- * OK on success; ERROR on failure with errno set appropriately. In the
- * case of ERROR, NX will have dealloated the pre-allocated window.
- *
- ****************************************************************************/
- int nxfe_constructwindow(NXHANDLE handle, FAR struct nxbe_window_s *wnd,
- FAR const struct nx_callback_s *cb, FAR void *arg)
- {
- FAR struct nxfe_state_s *fe = (FAR struct nxfe_state_s *)handle;
- FAR struct nxbe_state_s *be = &fe->be;
- #ifdef CONFIG_DEBUG
- if (!wnd)
- {
- errno = EINVAL;
- return ERROR;
- }
- if (!fe || !cb)
- {
- kfree(wnd);
- errno = EINVAL;
- return ERROR;
- }
- #endif
- /* Initialize the window structure */
- wnd->be = be;
- wnd->cb = cb;
- wnd->arg = arg;
- /* Insert the new window at the top on the display. topwnd is
- * never NULL (it may point only at the background window, however)
- */
- wnd->above = NULL;
- wnd->below = be->topwnd;
- be->topwnd->above = wnd;
- be->topwnd = wnd;
- /* Report the initialize size/position of the window */
- nxfe_reportposition((NXWINDOW)wnd);
- /* Provide the initial mouse settings */
- #ifdef CONFIG_NX_MOUSE
- nxsu_mousereport(wnd);
- #endif
- return OK;
- }
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