diff options
Diffstat (limited to 'nuttx/graphics/nxtk/nxtk_getwindow.c')
-rw-r--r-- | nuttx/graphics/nxtk/nxtk_getwindow.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/nuttx/graphics/nxtk/nxtk_getwindow.c b/nuttx/graphics/nxtk/nxtk_getwindow.c new file mode 100644 index 000000000..121c7702a --- /dev/null +++ b/nuttx/graphics/nxtk/nxtk_getwindow.c @@ -0,0 +1,123 @@ +/**************************************************************************** + * graphics/nxtk/nxtk_getwindow.c + * + * Copyright (C) 2011 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/nx/nx.h> +#include <nuttx/nx/nxtk.h> + +#include "nxfe.h" +#include "nxtk_internal.h" + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxtk_getwindow + * + * Description: + * Get the raw contents of graphic memory within a rectangular region. NOTE: + * Since raw graphic memory is returned, the returned memory content may be + * the memory of windows above this one and may not necessarily belong to + * this window unless you assure that this is the top window. + * + * Input Parameters: + * wnd - The window structure reference + * rect - The location to be copied + * plane - Specifies the color plane to get from. + * dest - The location to copy the memory region + * deststride - The width, in bytes, the the dest memory + * + * Return: + * OK on success; ERROR on failure with errno set appropriately + * + ****************************************************************************/ + +int nxtk_getwindow(NXTKWINDOW hfwnd, FAR const struct nxgl_rect_s *rect, + unsigned int plane, FAR uint8_t *dest, + unsigned int deststride) +{ + FAR struct nxtk_framedwindow_s *fwnd = (FAR struct nxtk_framedwindow_s *)hfwnd; + struct nxgl_rect_s getrect; + +#ifdef CONFIG_DEBUG + if (!hfwnd || !rect || !dest) + { + gvdbg("Invalid parameters\n"); + set_errno(EINVAL); + return ERROR; + } +#endif + + /* Clip the rectangle so that it lies within the sub-window bounds + * then move the rectangle to that it is relative to the containing + * window. + */ + + nxtk_subwindowclip(fwnd, &getrect, rect, &fwnd->fwrect); + + /* Then get it */ + + return nx_getrectangle((NXWINDOW)hfwnd, &getrect, plane, dest, deststride); +} |