85 lines
2.7 KiB
C
85 lines
2.7 KiB
C
/****************************************************************************
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* libs/libnx/nxmu/nx_setpixel.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <mqueue.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/nx/nxglib.h>
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#include <nuttx/nx/nx.h>
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#include <nuttx/nx/nxbe.h>
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#include <nuttx/nx/nxmu.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nx_setpixel
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*
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* Description:
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* Set a single pixel in the window to the specified color. This is simply
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* a degenerate case of nx_fill(), but may be optimized in some
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* architectures.
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*
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* Input Parameters:
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* wnd - The window structure reference
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* pos - The pixel location to be set
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* col - The color to use in the set
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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 nx_setpixel(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos,
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nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
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{
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FAR struct nxbe_window_s *wnd = (FAR struct nxbe_window_s *)hwnd;
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struct nxsvrmsg_setpixel_s outmsg;
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#ifdef CONFIG_DEBUG_FEATURES
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if (!wnd || !pos || !color)
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{
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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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/* Format the fill command */
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outmsg.msgid = NX_SVRMSG_SETPIXEL;
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outmsg.wnd = wnd;
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outmsg.pos.x = pos->x;
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outmsg.pos.y = pos->y;
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nxgl_colorcopy(outmsg.color, color);
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/* Forward the fill command to the server */
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return nxmu_sendwindow(wnd, &outmsg, sizeof(struct nxsvrmsg_setpixel_s));
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}
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