130 lines
4.1 KiB
C
130 lines
4.1 KiB
C
/****************************************************************************
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* nuttx/graphics/nxterm/nxterm_bkgd.c
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*
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* Copyright (C) 2012 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 <stdint.h>
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#include <stdbool.h>
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#include <semaphore.h>
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#include <assert.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/nxglib.h>
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#include "nxterm.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxterm_redraw
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*
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* Description:
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* Re-draw a portion of the NX console. This function should be called
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* from the appropriate window callback logic.
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*
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* Input Parameters:
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* handle - A handle previously returned by nx_register, nxtk_register, or
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* nxtool_register.
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* rect - The rectangle that needs to be re-drawn (in window relative
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* coordinates)
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* more - true: More re-draw requests will follow
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void nxterm_redraw(NXTERM handle, FAR const struct nxgl_rect_s *rect, bool more)
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{
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FAR struct nxterm_state_s *priv;
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int ret;
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int i;
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DEBUGASSERT(handle && rect);
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ginfo("rect={(%d,%d),(%d,%d)} more=%s\n",
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rect->pt1.x, rect->pt1.y, rect->pt2.x, rect->pt2.y,
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more ? "true" : "false");
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/* Recover our private state structure */
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priv = (FAR struct nxterm_state_s *)handle;
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/* Get exclusive access to the state structure */
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do
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{
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ret = nxterm_semwait(priv);
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/* Check for errors */
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if (ret < 0)
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{
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/* The only expected error is if the wait failed because of it
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* was interrupted by a signal.
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*/
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DEBUGASSERT(errno == EINTR);
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}
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}
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while (ret < 0);
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/* Fill the rectangular region with the window background color */
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ret = priv->ops->fill(priv, rect, priv->wndo.wcolor);
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if (ret < 0)
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{
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gerr("ERROR: fill failed: %d\n", errno);
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}
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/* Then redraw each character on the display (Only the characters within
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* the rectangle will actually be redrawn).
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*/
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for (i = 0; i < priv->nchars; i++)
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{
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nxterm_fillchar(priv, rect, &priv->bm[i]);
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}
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(void)nxterm_sempost(priv);
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}
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