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nuttx-apps/examples/lvgldemo/tp_cal.c

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/****************************************************************************
* examples/touchscreen/tp_cal.c
*
* Copyright (C) 2018 Gregory Nutt. All rights reserved.
* Author: Gábor Kiss-Vámosi <kisvegabor@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdio.h>
#include <graphics/lvgl.h>
#include "tp.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define CIRCLE_SIZE 20
#define TP_MAX_VALUE 5000
/****************************************************************************
* Private Type Definitions
****************************************************************************/
enum tp_cal_state_e
{
TP_CAL_STATE_INIT,
TP_CAL_STATE_WAIT_TOP_LEFT,
TP_CAL_STATE_WAIT_TOP_RIGHT,
TP_CAL_STATE_WAIT_BOTTOM_RIGHT,
TP_CAL_STATE_WAIT_BOTTOM_LEFT,
TP_CAL_STATE_WAIT_LEAVE,
TP_CAL_STATE_READY,
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static lv_res_t btn_click_action(lv_obj_t * scr);
/****************************************************************************
* Private Data
****************************************************************************/
static enum tp_cal_state_e state;
static lv_point_t p[4];
static lv_obj_t *prev_scr;
static lv_obj_t *big_btn;
static lv_obj_t *label_main;
static lv_obj_t *circ_area;
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: btn_click_action
*
* Description:
*
* Input Parameters:
* scr
*
* Returned Value:
* ?
*
****************************************************************************/
static lv_res_t btn_click_action(FAR lv_obj_t *scr)
{
if (state == TP_CAL_STATE_WAIT_TOP_LEFT)
{
lv_indev_t *indev = lv_indev_get_act();
char buf[64];
lv_anim_t a;
lv_indev_get_point(indev, &p[0]);
sprintf(buf, "x: %d\ny: %d", p[0].x, p[0].y);
lv_obj_t *label_coord = lv_label_create(lv_scr_act(), NULL);
lv_label_set_text(label_coord, buf);
lv_label_set_text(label_main, "Click the circle in\n"
"upper right-hand corner");
lv_obj_set_pos(label_main,
(LV_HOR_RES - lv_obj_get_width(label_main)) / 2,
(LV_VER_RES - lv_obj_get_height(label_main)) / 2);
a.var = circ_area;
a.start = 0;
a.end = LV_HOR_RES - CIRCLE_SIZE;
a.fp = (lv_anim_fp_t) lv_obj_set_x;
a.path = lv_anim_path_linear;
a.end_cb = NULL;
a.act_time = 0;
a.time = 200;
a.playback = 0;
a.playback_pause = 0;
a.repeat = 0;
a.repeat_pause = 0;
lv_anim_create(&a);
a.start = 0;
a.end = 0;
a.fp = (lv_anim_fp_t)lv_obj_set_y;
a.end_cb = NULL;
a.time = 200;
lv_anim_create(&a);
state = TP_CAL_STATE_WAIT_TOP_RIGHT;
}
else if (state == TP_CAL_STATE_WAIT_TOP_RIGHT)
{
lv_indev_t *indev = lv_indev_get_act();
char buf[64];
lv_anim_t a;
lv_indev_get_point(indev, &p[1]);
sprintf(buf, "x: %d\ny: %d", p[1].x, p[1].y);
lv_obj_t *label_coord = lv_label_create(lv_scr_act(), NULL);
lv_label_set_text(label_coord, buf);
lv_obj_set_pos(label_coord, LV_HOR_RES - lv_obj_get_width(label_coord),
0);
lv_label_set_text(label_main, "Click the circle in\n"
"lower right-hand corner");
lv_obj_set_pos(label_main,
(LV_HOR_RES - lv_obj_get_width(label_main)) / 2,
(LV_VER_RES - lv_obj_get_height(label_main)) / 2);
a.var = circ_area;
a.start = LV_HOR_RES - CIRCLE_SIZE;
a.end = LV_HOR_RES - CIRCLE_SIZE;
a.fp = (lv_anim_fp_t)lv_obj_set_x;
a.path = lv_anim_path_linear;
a.end_cb = NULL;
a.act_time = 0;
a.time = 200;
a.playback = 0;
a.playback_pause = 0;
a.repeat = 0;
a.repeat_pause = 0;
lv_anim_create(&a);
a.start = 0;
a.end = LV_VER_RES - CIRCLE_SIZE;
a.fp = (lv_anim_fp_t) lv_obj_set_y;
a.end_cb = NULL;
a.time = 200;
lv_anim_create(&a);
state = TP_CAL_STATE_WAIT_BOTTOM_RIGHT;
}
else if (state == TP_CAL_STATE_WAIT_BOTTOM_RIGHT)
{
lv_indev_t *indev = lv_indev_get_act();
char buf[64];
lv_anim_t a;
lv_indev_get_point(indev, &p[2]);
sprintf(buf, "x: %d\ny: %d", p[2].x, p[2].y);
lv_obj_t *label_coord = lv_label_create(lv_scr_act(), NULL);
lv_label_set_text(label_coord, buf);
lv_obj_set_pos(label_coord, LV_HOR_RES - lv_obj_get_width(label_coord),
LV_VER_RES - lv_obj_get_height(label_coord));
lv_label_set_text(label_main, "Click the circle in\n"
"lower left-hand corner");
lv_obj_set_pos(label_main,
(LV_HOR_RES - lv_obj_get_width(label_main)) / 2,
(LV_VER_RES - lv_obj_get_height(label_main)) / 2);
a.var = circ_area;
a.start = LV_HOR_RES - CIRCLE_SIZE;
a.end = 0;
a.fp = (lv_anim_fp_t)lv_obj_set_x;
a.path = lv_anim_path_linear;
a.end_cb = NULL;
a.act_time = 0;
a.time = 200;
a.playback = 0;
a.playback_pause = 0;
a.repeat = 0;
a.repeat_pause = 0;
lv_anim_create(&a);
a.start = LV_VER_RES - CIRCLE_SIZE;
a.end = LV_VER_RES - CIRCLE_SIZE;
a.fp = (lv_anim_fp_t) lv_obj_set_y;
a.end_cb = NULL;
a.time = 200;
lv_anim_create(&a);
state = TP_CAL_STATE_WAIT_BOTTOM_LEFT;
}
else if (state == TP_CAL_STATE_WAIT_BOTTOM_LEFT)
{
lv_indev_t *indev = lv_indev_get_act();
char buf[64];
lv_indev_get_point(indev, &p[3]);
lv_label_set_text(label_main, "Click the screen\n"
"to leave calibration");
lv_obj_set_pos(label_main,
(LV_HOR_RES - lv_obj_get_width(label_main)) / 2,
(LV_VER_RES - lv_obj_get_height(label_main)) / 2);
sprintf(buf, "x: %d\ny: %d", p[3].x, p[3].y);
lv_obj_t *label_coord = lv_label_create(lv_scr_act(), NULL);
lv_label_set_text(label_coord, buf);
lv_obj_set_pos(label_coord, 0,
LV_VER_RES - lv_obj_get_height(label_coord));
lv_obj_del(circ_area);
state = TP_CAL_STATE_WAIT_LEAVE;
}
else if (state == TP_CAL_STATE_WAIT_LEAVE)
{
lv_scr_load(prev_scr);
tp_set_cal_values(&p[0], &p[1], &p[2], &p[3]);
state = TP_CAL_STATE_READY;
}
else if (state == TP_CAL_STATE_READY)
{
}
return LV_RES_OK;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: tp_cal_create
*
* Description:
* Create a touchpad calibration screen
*
* Input Parameters:
* None
*
* Returned Value:
* None
*
****************************************************************************/
void tp_cal_create(void)
{
static lv_style_t style_circ;
lv_anim_t a;
state = TP_CAL_STATE_INIT;
prev_scr = lv_scr_act();
lv_obj_t *scr = lv_obj_create(NULL, NULL);
lv_obj_set_size(scr, TP_MAX_VALUE, TP_MAX_VALUE);
lv_scr_load(scr);
/* Create a big transparent button screen to receive clicks */
big_btn = lv_btn_create(lv_scr_act(), NULL);
lv_obj_set_size(big_btn, TP_MAX_VALUE, TP_MAX_VALUE);
lv_btn_set_style(big_btn, LV_BTN_STYLE_REL, &lv_style_transp);
lv_btn_set_style(big_btn, LV_BTN_STYLE_PR, &lv_style_transp);
lv_btn_set_action(big_btn, LV_BTN_ACTION_CLICK, btn_click_action);
lv_btn_set_layout(big_btn, LV_LAYOUT_OFF);
label_main = lv_label_create(lv_scr_act(), NULL);
lv_label_set_text(label_main, "Click the circle in\n"
"upper left-hand corner");
lv_label_set_align(label_main, LV_LABEL_ALIGN_CENTER);
lv_obj_set_pos(label_main, (LV_HOR_RES - lv_obj_get_width(label_main)) / 2,
(LV_VER_RES - lv_obj_get_height(label_main)) / 2);
lv_style_copy(&style_circ, &lv_style_pretty_color);
style_circ.body.radius = LV_RADIUS_CIRCLE;
circ_area = lv_obj_create(lv_scr_act(), NULL);
lv_obj_set_size(circ_area, CIRCLE_SIZE, CIRCLE_SIZE);
lv_obj_set_style(circ_area, &style_circ);
lv_obj_set_click(circ_area, false);
a.var = circ_area;
a.start = LV_HOR_RES / 2;
a.end = 0;
a.fp = (lv_anim_fp_t) lv_obj_set_x;
a.path = lv_anim_path_linear;
a.end_cb = NULL;
a.act_time = -500;
a.time = 200;
a.playback = 0;
a.playback_pause = 0;
a.repeat = 0;
a.repeat_pause = 0;
lv_anim_create(&a);
a.start = LV_VER_RES / 2;
a.end = 0;
a.fp = (lv_anim_fp_t) lv_obj_set_y;
a.end_cb = NULL;
a.time = 200;
lv_anim_create(&a);
state = TP_CAL_STATE_WAIT_TOP_LEFT;
}
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