189716cd84
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3766 42af7a65-404d-4744-a932-0658087f49c3
395 lines
12 KiB
C
395 lines
12 KiB
C
/****************************************************************************
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* examples/nxtext/nxtext_bkgd.c
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*
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* Copyright (C) 2011 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <semaphore.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/nx.h>
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#include <nuttx/nxfonts.h>
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#include "nxtext_internal.h"
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static void nxbg_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
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bool morem, FAR void *arg);
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static void nxbg_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size,
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FAR const struct nxgl_point_s *pos,
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FAR const struct nxgl_rect_s *bounds,
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FAR void *arg);
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#ifdef CONFIG_NX_MOUSE
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static void nxbg_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos,
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uint8_t buttons, FAR void *arg);
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#endif
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#ifdef CONFIG_NX_KBD
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static void nxbg_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch,
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FAR void *arg);
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#endif
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static struct nxtext_state_s g_bgstate;
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static struct nxtext_bitmap_s g_bgbm[CONFIG_EXAMPLES_NXTEXT_BMCACHE];
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static struct nxtext_glyph_s g_bgglyph[CONFIG_EXAMPLES_NXTEXT_GLCACHE];
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* Background window call table */
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const struct nx_callback_s g_bgcb =
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{
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nxbg_redraw, /* redraw */
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nxbg_position /* position */
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#ifdef CONFIG_NX_MOUSE
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, nxbg_mousein /* mousein */
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#endif
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#ifdef CONFIG_NX_KBD
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, nxbg_kbdin /* my kbdin */
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#endif
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};
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/* Background window handle */
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NXHANDLE g_bgwnd;
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxbg_redraw
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****************************************************************************/
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static void nxbg_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
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bool more, FAR void *arg)
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{
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message("nxbg_redraw: hwnd=%p rect={(%d,%d),(%d,%d)} more=%s\n",
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hwnd, rect->pt1.x, rect->pt1.y, rect->pt2.x, rect->pt2.y,
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more ? "true" : "false");
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nxbg_redrawrect(hwnd, rect);
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}
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/****************************************************************************
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* Name: nxbg_position
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****************************************************************************/
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static void nxbg_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size,
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FAR const struct nxgl_point_s *pos,
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FAR const struct nxgl_rect_s *bounds,
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FAR void *arg)
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{
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FAR struct nxtext_state_s *st = (FAR struct nxtext_state_s *)arg;
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/* Report the position */
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message("nxbg_position: hwnd=%p size=(%d,%d) pos=(%d,%d) bounds={(%d,%d),(%d,%d)}\n",
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hwnd, size->w, size->h, pos->x, pos->y,
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bounds->pt1.x, bounds->pt1.y, bounds->pt2.x, bounds->pt2.y);
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/* Have we picked off the window bounds yet? */
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if (!b_haveresolution)
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{
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/* Save the background window handle */
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g_bgwnd = hwnd;
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/* Save the background window size */
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st->wsize.w = size->w;
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st->wsize.h = size->h;
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/* Save the window limits (these should be the same for all places and all windows */
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g_xres = bounds->pt2.x + 1;
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g_yres = bounds->pt2.y + 1;
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b_haveresolution = true;
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sem_post(&g_semevent);
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message("nxbg_position: Have xres=%d yres=%d\n", g_xres, g_yres);
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}
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}
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/****************************************************************************
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* Name: nxbg_mousein
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****************************************************************************/
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#ifdef CONFIG_NX_MOUSE
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static void nxbg_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos,
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uint8_t buttons, FAR void *arg)
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{
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message("nxbg_mousein: hwnd=%p pos=(%d,%d) button=%02x\n",
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hwnd, pos->x, pos->y, buttons);
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}
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#endif
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/****************************************************************************
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* Name: nxbg_kbdin
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****************************************************************************/
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#ifdef CONFIG_NX_KBD
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static void nxbg_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch,
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FAR void *arg)
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{
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message("nxbg_kbdin: hwnd=%p nch=%d\n", hwnd, nch);
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nxbg_write(hwnd, ch, nch);
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}
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#endif
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/****************************************************************************
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* Name: nxbg_scroll
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****************************************************************************/
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static inline void nxbg_scroll(NXWINDOW hwnd, int lineheight)
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{
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struct nxgl_rect_s rect;
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struct nxgl_point_s offset;
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int ret;
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int i;
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int j;
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/* Adjust the vertical position of each character */
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for (i = 0; i < g_bgstate.nchars; )
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{
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FAR struct nxtext_bitmap_s *bm = &g_bgstate.bm[i];
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/* Has any part of this character scrolled off the screen? */
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if (bm->pos.y < lineheight)
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{
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/* Yes... Delete the character by moving all of the data */
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for (j = i; j < g_bgstate.nchars-1; j++)
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{
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memcpy(&g_bgstate.bm[j], &g_bgstate.bm[j+1], sizeof(struct nxtext_bitmap_s));
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}
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/* Decrement the number of cached characters ('i' is not incremented
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* in this case because it already points to the next character)
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*/
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g_bgstate.nchars--;
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}
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/* No.. just decrement its vertical position (moving it "up" the
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* display by one line).
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*/
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else
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{
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bm->pos.y -= lineheight;
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/* We are keeping this one so increment to the next character */
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i++;
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}
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}
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/* And move the next display position up by one line as well */
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g_bgstate.fpos.y -= lineheight;
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/* Move the display in the range of 0-height up one lineheight. The
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* line at the bottom will be reset to the background color automatically.
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*
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* The source rectangle to be moved.
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*/
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rect.pt1.x = 0;
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rect.pt1.y = lineheight;
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rect.pt2.x = g_bgstate.wsize.w - 1;
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rect.pt2.y = g_bgstate.wsize.h - 1;
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/* The offset that determines how far to move the source rectangle */
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offset.x = 0;
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offset.y = -lineheight;
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/* Move the source rectangle */
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ret = nx_move(hwnd, &rect, &offset);
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if (ret < 0)
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{
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message("nxbg_redrawrect: nx_move failed: %d\n", errno);
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}
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxbg_getstate
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*
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* Description:
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* Initialize the background window state structure.
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*
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****************************************************************************/
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FAR struct nxtext_state_s *nxbg_getstate(void)
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{
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FAR const struct nx_font_s *fontset;
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/* Initialize the color (used for redrawing the window) */
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memset(&g_bgstate, 0, sizeof(struct nxtext_state_s));
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g_bgstate.wcolor[0] = CONFIG_EXAMPLES_NXTEXT_BGCOLOR;
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g_bgstate.fcolor[0] = CONFIG_EXAMPLES_NXTEXT_BGFONTCOLOR;
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/* Get information about the font set being used and save this in the
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* state structure
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*/
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fontset = nxf_getfontset();
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g_bgstate.fheight = fontset->mxheight;
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g_bgstate.fwidth = fontset->mxwidth;
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g_bgstate.spwidth = fontset->spwidth;
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/* Set up the text caches */
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g_bgstate.maxchars = CONFIG_EXAMPLES_NXTEXT_BMCACHE;
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g_bgstate.maxglyphs = CONFIG_EXAMPLES_NXTEXT_GLCACHE;
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g_bgstate.bm = g_bgbm;
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g_bgstate.glyph = g_bgglyph;
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/* Set the first display position */
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nxtext_home(&g_bgstate);
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return &g_bgstate;
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}
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/****************************************************************************
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* Name: nxbg_write
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*
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* Description:
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* Put a sequence of bytes in the window.
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*
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****************************************************************************/
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void nxbg_write(NXWINDOW hwnd, FAR const uint8_t *buffer, size_t buflen)
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{
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int lineheight = (g_bgstate.fheight + LINE_SEPARATION);
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while (buflen-- > 0)
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{
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/* Will another character fit on this line? */
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if (g_bgstate.fpos.x + g_bgstate.fwidth > g_bgstate.wsize.w)
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{
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/* No.. move to the next line */
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nxtext_newline(&g_bgstate);
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/* If we were about to output a newline character, then don't */
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if (*buffer == '\n')
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{
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buffer++;
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continue;
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}
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}
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/* Check if we need to scroll up (handling a corner case where
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* there may be more than one newline).
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*/
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while (g_bgstate.fpos.y >= g_bgstate.wsize.h - lineheight)
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{
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nxbg_scroll(hwnd, lineheight);
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}
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/* Finally, we can output the character */
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nxtext_putc(hwnd, &g_bgstate, (uint8_t)*buffer++);
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}
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}
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/****************************************************************************
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* Name: nxbg_redrawrect
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****************************************************************************/
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void nxbg_redrawrect(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect)
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{
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int ret;
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int i;
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ret = nx_fill(hwnd, rect, g_bgstate.wcolor);
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if (ret < 0)
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{
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message("nxbg_redrawrect: nx_fill failed: %d\n", errno);
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}
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/* Fill each character on the display (Only the characters within rect
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* will actually be redrawn).
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*/
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for (i = 0; i < g_bgstate.nchars; i++)
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{
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nxtext_fillchar(hwnd, rect, &g_bgstate, &g_bgstate.bm[i]);
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}
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}
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