forked from Archive/PX4-Autopilot
336 lines
11 KiB
C
336 lines
11 KiB
C
/****************************************************************************
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* examples/nxlines/nxlines_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 <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 <debug.h>
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#include <fixedmath.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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* Definitions
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****************************************************************************/
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#ifndef MIN
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# define MIN(a,b) (a < b ? a : b)
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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, 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 nxlines_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 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_bgcb =
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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_MOUSE
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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 /* my kbdin */
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#endif
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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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gvdbg("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, 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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gvdbg("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.sem);
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gvdbg("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_MOUSE
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static void nxlines_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("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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gvdbg("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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message("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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* Print "Hello, World!" in the center of the display.
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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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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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message("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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message("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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halfx = b16toi(b16muli(b16sin(angle), radius));
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halfy = b16toi(b16muli(b16cos(angle), 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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message("Angle: %08x 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, CONFIG_EXAMPLES_NXLINES_LINEWIDTH, color);
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if (ret < 0)
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{
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message("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, CONFIG_EXAMPLES_NXLINES_LINEWIDTH, color);
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if (ret < 0)
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{
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message("nxlines_test: nx_drawline failed clearing: %d\n", ret);
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}
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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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#ifdef CONFIG_EXAMPLES_NXLINES_BUILTIN
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/* If this example was built as an NSH add-on, then exit after we
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* have gone all the way around once.
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*/
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return;
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#else
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/* Wrap back to zero and continue with the test */
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angle = 0;
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#endif
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}
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memcpy(&previous, &vector, sizeof(struct nxgl_vector_s));
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usleep(500*1000);
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}
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}
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