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- /****************************************************************************
- * graphics/nxmu/nxmu_redraw.c
- *
- * Copyright (C) 2008-2009, 2011-2012, 2019 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 <stdbool.h>
- #include <errno.h>
- #include <debug.h>
- #include <nuttx/nx/nx.h>
- #include "nxmu.h"
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxmu_redraw_pwfb
- *
- * Description:
- * Redraw into the per-window framebuffer
- *
- ****************************************************************************/
- #ifdef CONFIG_NX_RAMBACKED
- static inline void nxmu_redraw_pwfb(FAR struct nxbe_window_s *wnd,
- FAR const struct nxgl_rect_s *rect)
- {
- FAR const void *src[CONFIG_NX_NPLANES];
- struct nxgl_rect_s wndrect;
- struct nxgl_point_s origin;
- unsigned int bpp;
- /* Put the rectangle back relative to the window */
- nxgl_rectoffset(&wndrect, rect,
- -wnd->bounds.pt1.x, -wnd->bounds.pt1.y);
- /* Get the source of address of the rectangle in the framebuffer. */
- bpp = wnd->be->plane[0].pinfo.bpp;
- src[0] = (FAR const void *)((FAR uint8_t *)wnd->fbmem +
- wndrect.pt1.y * wnd->stride +
- ((bpp * wndrect.pt1.x) >> 3));
- /* For resolutions less than 8-bits, the starting pixel will be contained
- * in the byte pointed to by src[0]but may not be properly aligned for the
- * transfer. We fix this by modifying the origin.
- */
- origin.x = wndrect.pt1.x;
- origin.y = wndrect.pt1.y;
- switch (bpp)
- {
- #ifndef CONFIG_NX_DISABLE_1BPP
- case 1: /* 1 bit per pixel */
- {
- origin.x &= ~7;
- }
- break;
- #endif
- #ifndef CONFIG_NX_DISABLE_2BPP
- case 2: /* 2 bits per pixel */
- {
- origin.x &= ~3;
- }
- break;
- #endif
- #ifndef CONFIG_NX_DISABLE_4BPP
- case 4: /* 4 bits per pixel */
- {
- origin.x &= ~1;
- }
- break;
- #endif
- default:
- break;
- }
- /* And render the bitmap into device graphics memory */
- nxbe_flush(wnd, &wndrect, src, &origin, wnd->stride);
- }
- #endif
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxmu_redrawreq
- *
- * Description:
- * Send a message to the client requesting that it to redraw the rectangular
- * region in the window.
- *
- ****************************************************************************/
- void nxmu_redrawreq(FAR struct nxbe_window_s *wnd,
- FAR const struct nxgl_rect_s *rect)
- {
- struct nxclimsg_redraw_s outmsg;
- /* Send the client redraw message */
- outmsg.msgid = NX_CLIMSG_REDRAW;
- outmsg.wnd = wnd;
- outmsg.more = false;
- nxgl_rectoffset(&outmsg.rect, rect,
- -wnd->bounds.pt1.x, -wnd->bounds.pt1.y);
- nxmu_sendclientwindow(wnd, &outmsg,
- sizeof(struct nxclimsg_redraw_s));
- }
- /****************************************************************************
- * Name: nxmu_redraw
- *
- * Description:
- * Redraw client window data. This may involve either sending a message
- * to the client requesting that it redraw a region of the window. Or, in
- * the base that the window supports a per-window framebuffer, this might
- * amount to an immediate redraw from the framebuffer.
- *
- ****************************************************************************/
- void nxmu_redraw(FAR struct nxbe_window_s *wnd,
- FAR const struct nxgl_rect_s *rect)
- {
- /* Don't update hidden windows */
- if (!NXBE_ISHIDDEN(wnd))
- {
- #ifdef CONFIG_NX_RAMBACKED
- /* If this window supports a pre-window frame buffer, then we can just
- * update the device content from that framebuffer.
- */
- if (NXBE_ISRAMBACKED(wnd))
- {
- nxmu_redraw_pwfb(wnd, rect);
- }
- /* Otherwise, send a message to the client requesting an update of the
- * affected region in the window.
- */
- else
- #endif
- {
- nxmu_redrawreq(wnd, rect);
- }
- }
- }
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