106 lines
4.0 KiB
C
106 lines
4.0 KiB
C
/****************************************************************************
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* libs/libnx/nxtk/nxtk_getwindow.c
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*
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* Copyright (C) 2011, 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/nx/nx.h>
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#include <nuttx/nx/nxtk.h>
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#include "nxtk.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxtk_getwindow
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*
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* Description:
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* Get the raw contents of graphic memory within a rectangular region. NOTE:
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* Since raw graphic memory is returned, the returned memory content may be
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* the memory of windows above this one and may not necessarily belong to
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* this window unless you assure that this is the top window.
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*
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* Input Parameters:
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* wnd - The window structure reference
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* rect - The location to be copied
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* plane - Specifies the color plane to get from.
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* dest - The location to copy the memory region
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* deststride - The width, in bytes, of the dest memory
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*
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* Returned Value:
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* OK on success; ERROR on failure with errno set appropriately
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*
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****************************************************************************/
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int nxtk_getwindow(NXTKWINDOW hfwnd, FAR const struct nxgl_rect_s *rect,
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unsigned int plane, FAR uint8_t *dest,
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unsigned int deststride)
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{
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FAR struct nxtk_framedwindow_s *fwnd = (FAR struct nxtk_framedwindow_s *)hfwnd;
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struct nxgl_rect_s getrect;
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#ifdef CONFIG_DEBUG_FEATURES
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if (!hfwnd || !rect || !dest)
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{
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ginfo("Invalid parameters\n");
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set_errno(EINVAL);
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return ERROR;
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}
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#endif
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/* Move the rectangle to that it is relative to the containing
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* window. If part of the rectangle lies outside the window,
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* it will contain garbage data, but the contained area will be
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* valid.
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*/
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nxgl_rectoffset(&getrect, rect,
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fwnd->fwrect.pt1.x - fwnd->wnd.bounds.pt1.x,
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fwnd->fwrect.pt1.y - fwnd->wnd.bounds.pt1.y);
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/* Then get it */
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return nx_getrectangle((NXWINDOW)hfwnd, &getrect, plane, dest, deststride);
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}
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