/**************************************************************************** * libnx/nxtk/nxtk_getwindow.c * * Copyright (C) 2011, 2013 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * 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 #include #include #include #include #include #include "nxtk.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, of 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 /* Move the rectangle to that it is relative to the containing * window. If part of the rectangle lies outside the window, * it will contain garbage data, but the contained area will be * valid. */ nxgl_rectoffset(&getrect, rect, fwnd->fwrect.pt1.x - fwnd->wnd.bounds.pt1.x, fwnd->fwrect.pt1.y - fwnd->wnd.bounds.pt1.y); /* Then get it */ return nx_getrectangle((NXWINDOW)hfwnd, &getrect, plane, dest, deststride); }