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lcd: add lvgl demo ui

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Yu Zhe
2021-09-09 19:24:19 +08:00
committed by morris
parent 9240fb03d8
commit 64045ea9f4
6 changed files with 700 additions and 7 deletions
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92
examples/peripherals/lcd/lvgl/main/lvgl_demo_ui.c
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@@ -6,14 +6,94 @@
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
#include <math.h>
#include "lvgl.h"
#ifndef PI
#define PI (3.14159f)
#endif
// LVGL image declare
LV_IMG_DECLARE(esp_logo)
LV_IMG_DECLARE(esp_text)
static lv_obj_t *arc[3];
static lv_obj_t *img_logo;
static lv_obj_t *img_text;
static lv_color_t arc_color[] = {
LV_COLOR_MAKE(232, 87, 116),
LV_COLOR_MAKE(126, 87, 162),
LV_COLOR_MAKE(90, 202, 228),
};
static void anim_timer_cb(lv_timer_t *timer)
{
static int32_t count = -90;
lv_obj_t *scr = (lv_obj_t *) timer->user_data;
// Play arc animation
if (count < 90) {
lv_coord_t arc_start = count > 0 ? (1 - cosf(count / 180.0f * PI)) * 270 : 0;
lv_coord_t arc_len = (sinf(count / 180.0f * PI) + 1) * 135;
for (size_t i = 0; i < sizeof(arc) / sizeof(arc[0]); i++) {
lv_arc_set_bg_angles(arc[i], arc_start, arc_len);
lv_arc_set_rotation(arc[i], (count + 120 * (i + 1)) % 360);
}
}
// Delete arcs when animation finished
if (count == 90) {
for (size_t i = 0; i < sizeof(arc) / sizeof(arc[0]); i++) {
lv_obj_del(arc[i]);
}
// Create new image and make it transparent
img_text = lv_img_create(scr);
lv_img_set_src(img_text, &esp_text);
lv_obj_set_style_img_opa(img_text, 0, 0);
}
// Move images when arc animation finished
if ((count >= 100) && (count <= 180)) {
lv_coord_t offset = (sinf((count - 140) * 2.25f / 90.0f) + 1) * 20.0f;
lv_obj_align((lv_obj_t *) timer->user_data, LV_ALIGN_CENTER, 0, -offset);
lv_obj_align(img_text, LV_ALIGN_CENTER, 0, 2 * offset);
lv_obj_set_style_img_opa(img_text, offset / 40.0f * 255, 0);
}
// Delete timer when all animation finished
if (++count >= 180) {
lv_timer_del(timer);
}
}
void example_lvgl_demo_ui(lv_obj_t *scr)
{
// Create a Label on the currently active screen
lv_obj_t *label = lv_label_create(scr);
// Modify the Label's text
lv_label_set_text(label, "Hello World");
// Align the Label to the center
lv_obj_align(label, LV_ALIGN_TOP_MID, 0, 0);
// Create image
img_logo = lv_img_create(scr);
lv_img_set_src(img_logo, &esp_logo);
lv_obj_center(img_logo);
// Create arcs
for (size_t i = 0; i < sizeof(arc) / sizeof(arc[0]); i++) {
arc[i] = lv_arc_create(scr);
// Set arc caption
lv_obj_set_size(arc[i], 220 - 30 * i, 220 - 30 * i);
lv_arc_set_bg_angles(arc[i], 120 * i, 10 + 120 * i);
lv_arc_set_value(arc[i], 0);
// Set arc style
lv_obj_remove_style(arc[i], NULL, LV_PART_KNOB);
lv_obj_set_style_arc_width(arc[i], 10, 0);
lv_obj_set_style_arc_color(arc[i], arc_color[i], 0);
// Make arc center
lv_obj_center(arc[i]);
}
// Create timer for animation
lv_timer_create(anim_timer_cb, 20, (void *) scr);
}