kopia lustrzana https://github.com/espressif/esp-idf
144 wiersze
3.8 KiB
C
144 wiersze
3.8 KiB
C
/*
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* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: CC0-1.0
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*/
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#include <math.h>
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#include "lvgl.h"
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#ifndef PI
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#define PI (3.14159f)
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#endif
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// LVGL image declare
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LV_IMG_DECLARE(esp_logo)
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LV_IMG_DECLARE(esp_text)
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typedef struct {
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lv_obj_t *scr;
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int count_val;
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} my_timer_context_t;
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static my_timer_context_t my_tim_ctx;
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static lv_obj_t * btn;
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static lv_obj_t *arc[3];
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static lv_obj_t *img_logo;
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static lv_obj_t *img_text = NULL;
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static lv_color_t arc_color[] = {
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LV_COLOR_MAKE(232, 87, 116),
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LV_COLOR_MAKE(126, 87, 162),
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LV_COLOR_MAKE(90, 202, 228),
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};
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static void anim_timer_cb(lv_timer_t *timer)
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{
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my_timer_context_t *timer_ctx = (my_timer_context_t *) timer->user_data;
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int count = timer_ctx->count_val;
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lv_obj_t *scr = timer_ctx->scr;
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// Play arc animation
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if (count < 90) {
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lv_coord_t arc_start = count > 0 ? (1 - cosf(count / 180.0f * PI)) * 270 : 0;
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lv_coord_t arc_len = (sinf(count / 180.0f * PI) + 1) * 135;
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for (size_t i = 0; i < sizeof(arc) / sizeof(arc[0]); i++) {
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lv_arc_set_bg_angles(arc[i], arc_start, arc_len);
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lv_arc_set_rotation(arc[i], (count + 120 * (i + 1)) % 360);
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}
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}
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// Delete arcs when animation finished
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if (count == 90) {
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for (size_t i = 0; i < sizeof(arc) / sizeof(arc[0]); i++) {
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lv_obj_del(arc[i]);
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}
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// Create new image and make it transparent
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img_text = lv_img_create(scr);
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lv_img_set_src(img_text, &esp_text);
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lv_obj_set_style_img_opa(img_text, 0, 0);
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}
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// Move images when arc animation finished
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if ((count >= 100) && (count <= 180)) {
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lv_coord_t offset = (sinf((count - 140) * 2.25f / 90.0f) + 1) * 20.0f;
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lv_obj_align(img_logo, LV_ALIGN_CENTER, 0, -offset);
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lv_obj_align(img_text, LV_ALIGN_CENTER, 0, 2 * offset);
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lv_obj_set_style_img_opa(img_text, offset / 40.0f * 255, 0);
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}
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// Delete timer when all animation finished
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if ((count += 5) == 220) {
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lv_timer_del(timer);
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// Enable button
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lv_obj_clear_state(btn, LV_STATE_DISABLED);
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} else {
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timer_ctx->count_val = count;
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}
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}
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static void start_animation(lv_obj_t *scr)
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{
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// Align image
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lv_obj_center(img_logo);
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// Create arcs
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for (size_t i = 0; i < sizeof(arc) / sizeof(arc[0]); i++) {
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arc[i] = lv_arc_create(scr);
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// Set arc caption
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lv_obj_set_size(arc[i], 220 - 30 * i, 220 - 30 * i);
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lv_arc_set_bg_angles(arc[i], 120 * i, 10 + 120 * i);
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lv_arc_set_value(arc[i], 0);
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// Set arc style
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lv_obj_remove_style(arc[i], NULL, LV_PART_KNOB);
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lv_obj_set_style_arc_width(arc[i], 10, 0);
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lv_obj_set_style_arc_color(arc[i], arc_color[i], 0);
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// Make arc center
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lv_obj_center(arc[i]);
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}
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if (img_text) {
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lv_obj_del(img_text);
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img_text = NULL;
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}
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// Create timer for animation
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my_tim_ctx.count_val = -90;
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my_tim_ctx.scr = scr;
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lv_timer_create(anim_timer_cb, 20, &my_tim_ctx);
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// Disable button
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lv_obj_add_state(btn, LV_STATE_DISABLED);
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}
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static void btn_cb(lv_event_t * e)
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{
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lv_obj_t * scr = lv_event_get_user_data(e);
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start_animation(scr);
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}
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void example_lvgl_demo_ui(lv_disp_t *disp)
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{
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lv_obj_t *scr = lv_disp_get_scr_act(disp);
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// Create image
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img_logo = lv_img_create(scr);
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lv_img_set_src(img_logo, &esp_logo);
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btn = lv_btn_create(scr);
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lv_obj_t * lbl = lv_label_create(btn);
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lv_label_set_text_static(lbl, LV_SYMBOL_REFRESH" SHOW AGAIN");
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lv_obj_set_style_text_font(lbl, &lv_font_montserrat_20, 0);
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lv_obj_align(btn, LV_ALIGN_BOTTOM_LEFT, 30, -30);
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// Button event
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lv_obj_add_event_cb(btn, btn_cb, LV_EVENT_CLICKED, scr);
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start_animation(scr);
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}
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