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335 lines
11 KiB
335 lines
11 KiB
/**************************************************************************** |
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* examples/nxlines/nxlines_bkgd.c |
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* |
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* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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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_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_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_NSH_BUILTIN_APPS |
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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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