349 lines
11 KiB
C
349 lines
11 KiB
C
/****************************************************************************
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* apps/examples/nxlines/nxlines_bkgd.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 <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/param.h>
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#include <debug.h>
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#include <fixedmath.h>
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#include <inttypes.h>
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#include <nuttx/nx/nx.h>
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#include <nuttx/nx/nxglib.h>
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#include "nxlines.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifdef CONFIG_NX_ANTIALIASING
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/* If anti-aliasing is enabled, then we must clear a slightly
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* larger region to prevent weird edge effects.
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*/
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# define CLEAR_WIDTH (CONFIG_EXAMPLES_NXLINES_LINEWIDTH + 2)
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#else
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# define CLEAR_WIDTH CONFIG_EXAMPLES_NXLINES_LINEWIDTH
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#endif
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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 nxlines_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 nxlines_position(NXWINDOW hwnd,
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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_XYINPUT
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static void nxlines_mousein(NXWINDOW hwnd,
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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 nxlines_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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/****************************************************************************
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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_nxlinescb =
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{
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nxlines_redraw, /* redraw */
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nxlines_position /* position */
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#ifdef CONFIG_NX_XYINPUT
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, nxlines_mousein /* mousein */
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#endif
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#ifdef CONFIG_NX_KBD
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, nxlines_kbdin /* kbdin */
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#endif
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, NULL /* event */
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxlines_redraw
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****************************************************************************/
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static void nxlines_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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ginfo("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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}
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/****************************************************************************
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* Name: nxlines_position
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****************************************************************************/
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static void nxlines_position(NXWINDOW hwnd,
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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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/* Report the position */
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ginfo("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 (!g_nxlines.havepos)
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{
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/* Save the background window handle */
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g_nxlines.hbkgd = hwnd;
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/* Save the window limits */
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g_nxlines.xres = bounds->pt2.x + 1;
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g_nxlines.yres = bounds->pt2.y + 1;
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g_nxlines.havepos = true;
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sem_post(&g_nxlines.eventsem);
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ginfo("Have xres=%d yres=%d\n", g_nxlines.xres, g_nxlines.yres);
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}
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}
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/****************************************************************************
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* Name: nxlines_mousein
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****************************************************************************/
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#ifdef CONFIG_NX_XYINPUT
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static void nxlines_mousein(NXWINDOW hwnd,
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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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printf("nxlines_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: nxlines_kbdin
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****************************************************************************/
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#ifdef CONFIG_NX_KBD
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static void nxlines_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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ginfo("hwnd=%p nch=%d\n", hwnd, nch);
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/* In this example, there is no keyboard so a keyboard event is not
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* expected.
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*/
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printf("nxlines_kbdin: Unexpected keyboard callback\n");
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxlines_test
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*
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* Description:
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* Update line motion.
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*
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****************************************************************************/
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void nxlines_test(NXWINDOW hwnd)
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{
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struct nxgl_point_s center;
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struct nxgl_vector_s vector;
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struct nxgl_vector_s previous;
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nxgl_mxpixel_t color[CONFIG_NX_NPLANES];
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nxgl_coord_t maxradius;
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nxgl_coord_t radius;
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nxgl_coord_t halfx;
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nxgl_coord_t halfy;
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b16_t angle;
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b16_t sinangle;
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b16_t cosangle;
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int ret;
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/* Get the maximum radius and center of the circle */
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maxradius = MIN(g_nxlines.yres, g_nxlines.xres) >> 1;
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center.x = g_nxlines.xres >> 1;
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center.y = g_nxlines.yres >> 1;
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/* Draw a circular background */
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radius = maxradius - ((CONFIG_EXAMPLES_NXLINES_BORDERWIDTH + 1) / 2);
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color[0] = CONFIG_EXAMPLES_NXLINES_CIRCLECOLOR;
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ret = nx_fillcircle((NXWINDOW)hwnd, ¢er, radius, color);
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if (ret < 0)
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{
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printf("nxlines_test: nx_fillcircle failed: %d\n", ret);
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}
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/* Draw the circular border */
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color[0] = CONFIG_EXAMPLES_NXLINES_BORDERCOLOR;
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ret = nx_drawcircle((NXWINDOW)hwnd, ¢er, radius,
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CONFIG_EXAMPLES_NXLINES_BORDERWIDTH, color);
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if (ret < 0)
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{
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printf("nxlines_test: nx_fillcircle failed: %d\n", ret);
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}
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/* Back off the radius to account for the thickness of border line
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* and with a big fudge factor that will (hopefully) prevent the corners
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* of the lines from overwriting the border. This is overly complicated
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* here because we don't assume anything about the screen resolution or
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* the borderwidth or the line thickness (and there are certainly some
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* smarter ways to do this).
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*/
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if (maxradius > (CONFIG_EXAMPLES_NXLINES_BORDERWIDTH + 80))
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{
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radius = maxradius - (CONFIG_EXAMPLES_NXLINES_BORDERWIDTH + 40);
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}
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else if (maxradius > (CONFIG_EXAMPLES_NXLINES_BORDERWIDTH + 60))
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{
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radius = maxradius - (CONFIG_EXAMPLES_NXLINES_BORDERWIDTH + 30);
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}
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else if (maxradius > (CONFIG_EXAMPLES_NXLINES_BORDERWIDTH + 40))
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{
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radius = maxradius - (CONFIG_EXAMPLES_NXLINES_BORDERWIDTH + 20);
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}
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else if (maxradius > (CONFIG_EXAMPLES_NXLINES_BORDERWIDTH + 20))
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{
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radius = maxradius - (CONFIG_EXAMPLES_NXLINES_BORDERWIDTH + 10);
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}
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else
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{
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radius = maxradius - CONFIG_EXAMPLES_NXLINES_BORDERWIDTH;
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}
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/* The loop, showing the line in various orientations */
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angle = 0;
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previous.pt1.x = center.x;
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previous.pt1.y = center.y;
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previous.pt2.x = center.x;
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previous.pt2.y = center.y;
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for (; ; )
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{
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/* Determine the position of the line on this pass */
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sinangle = b16sin(angle);
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halfx = b16toi(b16muli(sinangle, radius));
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cosangle = b16cos(angle);
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halfy = b16toi(b16muli(cosangle, radius));
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vector.pt1.x = center.x + halfx;
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vector.pt1.y = center.y + halfy;
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vector.pt2.x = center.x - halfx;
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vector.pt2.y = center.y - halfy;
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printf("Angle: %08" PRIx32 " vector: (%d,%d)->(%d,%d)\n",
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angle, vector.pt1.x, vector.pt1.y, vector.pt2.x, vector.pt2.y);
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/* Clear the previous line by overwriting it with the circle color */
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color[0] = CONFIG_EXAMPLES_NXLINES_CIRCLECOLOR;
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ret = nx_drawline((NXWINDOW)hwnd, &previous, CLEAR_WIDTH, color,
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NX_LINECAP_NONE);
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if (ret < 0)
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{
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printf("nxlines_test: nx_drawline failed clearing: %d\n", ret);
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}
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/* Draw the new line */
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color[0] = CONFIG_EXAMPLES_NXLINES_LINECOLOR;
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ret = nx_drawline((NXWINDOW)hwnd, &vector,
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CONFIG_EXAMPLES_NXLINES_LINEWIDTH, color,
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NX_LINECAP_NONE);
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if (ret < 0)
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{
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printf("nxlines_test: nx_drawline failed clearing: %d\n", ret);
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}
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#ifdef CONFIG_NX_ANTIALIASING
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/* If anti-aliasing is enabled, then we must clear a slightly
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* larger region to prevent weird edge effects.
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*/
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halfx = b16toi(b16muli(sinangle, radius + 1));
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halfy = b16toi(b16muli(cosangle, radius + 1));
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previous.pt1.x = center.x + halfx;
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previous.pt1.y = center.y + halfy;
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previous.pt2.x = center.x - halfx;
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previous.pt2.y = center.y - halfy;
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#else
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memcpy(&previous, &vector, sizeof(struct nxgl_vector_s));
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#endif
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/* Set up for the next time through the loop then sleep for a bit. */
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angle += b16PI / 16; /* 32 angular positions in full circle */
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/* Check if we have gone all the way around */
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if (angle > (31 * (2 * b16PI) / 32))
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{
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/* Wrap back to zero and continue with the test */
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angle = 0;
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}
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usleep(500 * 1000);
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}
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}
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