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Diffstat (limited to 'nuttx/graphics/nxterm/nxcon_redraw.c')
-rw-r--r-- | nuttx/graphics/nxterm/nxcon_redraw.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/nuttx/graphics/nxterm/nxcon_redraw.c b/nuttx/graphics/nxterm/nxcon_redraw.c new file mode 100644 index 000000000..5ecb4ed48 --- /dev/null +++ b/nuttx/graphics/nxterm/nxcon_redraw.c @@ -0,0 +1,153 @@ +/**************************************************************************** + * nuttx/graphics/nxterm/nxcon_bkgd.c + * + * Copyright (C) 2012 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 <stdint.h> +#include <stdbool.h> +#include <semaphore.h> +#include <assert.h> +#include <errno.h> +#include <debug.h> + +#include <nuttx/nx/nx.h> +#include <nuttx/nx/nxglib.h> + +#include "nxcon_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxcon_redraw + * + * Description: + * Re-draw a portion of the NX console. This function should be called + * from the appropriate window callback logic. + * + * Input Parameters: + * handle - A handle previously returned by nx_register, nxtk_register, or + * nxtool_register. + * rect - The rectangle that needs to be re-drawn (in window relative + * coordinates) + * more - true: More re-draw requests will follow + * + * Returned Value: + * None + * + ****************************************************************************/ + +void nxcon_redraw(NXTERM handle, FAR const struct nxgl_rect_s *rect, bool more) +{ + FAR struct nxcon_state_s *priv; + int ret; + int i; + + DEBUGASSERT(handle && rect); + gvdbg("rect={(%d,%d),(%d,%d)} more=%s\n", + rect->pt1.x, rect->pt1.y, rect->pt2.x, rect->pt2.y, + more ? "true" : "false"); + + /* Recover our private state structure */ + + priv = (FAR struct nxcon_state_s *)handle; + + /* Get exclusive access to the state structure */ + + do + { + ret = nxcon_semwait(priv); + + /* Check for errors */ + + if (ret < 0) + { + /* The only expected error is if the wait failed because of it + * was interrupted by a signal. + */ + + DEBUGASSERT(errno == EINTR); + } + } + while (ret < 0); + + /* Fill the rectangular region with the window background color */ + + ret = priv->ops->fill(priv, rect, priv->wndo.wcolor); + if (ret < 0) + { + gdbg("fill failed: %d\n", errno); + } + + /* Then redraw each character on the display (Only the characters within + * the rectangle will actually be redrawn). + */ + + for (i = 0; i < priv->nchars; i++) + { + nxcon_fillchar(priv, rect, &priv->bm[i]); + } + + (void)nxcon_sempost(priv); +} |