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feat(rgb_lcd): adapt to LVGL v9

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This commit mainly refactor the RGB_LCD example to use the latest LVGL
V9 library.
This commit is contained in:
morris
2024-09-12 10:54:23 +08:00
parent 00991f1bf5
commit 6e8a958754
7 changed files with 120 additions and 126 deletions
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37
examples/peripherals/lcd/rgb_panel/main/lvgl_demo_ui.c
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@@ -1,33 +1,36 @@
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: CC0-1.0
*/
// This demo UI is adapted from LVGL official example: https://docs.lvgl.io/master/examples.html#scatter-chart
// This demo UI is adapted from LVGL official example: https://docs.lvgl.io/master/widgets/chart.html#scatter-chart
#include "lvgl.h"
static void draw_event_cb(lv_event_t *e)
{
lv_obj_draw_part_dsc_t *dsc = lv_event_get_draw_part_dsc(e);
if (dsc->part == LV_PART_ITEMS) {
lv_draw_task_t *draw_task = lv_event_get_draw_task(e);
lv_draw_dsc_base_t *base_dsc = lv_draw_task_get_draw_dsc(draw_task);
if (base_dsc->part == LV_PART_INDICATOR) {
lv_obj_t *obj = lv_event_get_target(e);
lv_chart_series_t *ser = lv_chart_get_series_next(obj, NULL);
lv_draw_rect_dsc_t *rect_draw_dsc = lv_draw_task_get_draw_dsc(draw_task);
uint32_t cnt = lv_chart_get_point_count(obj);
/*Make older value more transparent*/
dsc->rect_dsc->bg_opa = (LV_OPA_COVER * dsc->id) / (cnt - 1);
rect_draw_dsc->bg_opa = (LV_OPA_COVER * base_dsc->id2) / (cnt - 1);
/*Make smaller values blue, higher values red*/
lv_coord_t *x_array = lv_chart_get_x_array(obj, ser);
lv_coord_t *y_array = lv_chart_get_y_array(obj, ser);
int32_t *x_array = lv_chart_get_x_array(obj, ser);
int32_t *y_array = lv_chart_get_y_array(obj, ser);
/*dsc->id is the tells drawing order, but we need the ID of the point being drawn.*/
uint32_t start_point = lv_chart_get_x_start_point(obj, ser);
uint32_t p_act = (start_point + dsc->id) % cnt; /*Consider start point to get the index of the array*/
uint32_t p_act = (start_point + base_dsc->id2) % cnt; /*Consider start point to get the index of the array*/
lv_opa_t x_opa = (x_array[p_act] * LV_OPA_50) / 200;
lv_opa_t y_opa = (y_array[p_act] * LV_OPA_50) / 1000;
dsc->rect_dsc->bg_color = lv_color_mix(lv_palette_main(LV_PALETTE_RED),
rect_draw_dsc->bg_color = lv_color_mix(lv_palette_main(LV_PALETTE_RED),
lv_palette_main(LV_PALETTE_BLUE),
x_opa + y_opa);
}
@@ -35,24 +38,22 @@ static void draw_event_cb(lv_event_t *e)
static void add_data(lv_timer_t *timer)
{
lv_obj_t *chart = timer->user_data;
lv_obj_t *chart = lv_timer_get_user_data(timer);
lv_chart_set_next_value2(chart, lv_chart_get_series_next(chart, NULL), lv_rand(0, 200), lv_rand(0, 1000));
}
void example_lvgl_demo_ui(lv_disp_t *disp)
void example_lvgl_demo_ui(lv_display_t *disp)
{
lv_obj_t *scr = lv_disp_get_scr_act(disp);
lv_obj_t *scr = lv_display_get_screen_active(disp);
lv_obj_t *chart = lv_chart_create(scr);
lv_obj_set_size(chart, 200, 150);
lv_obj_set_size(chart, 400, 300);
lv_obj_align(chart, LV_ALIGN_CENTER, 0, 0);
lv_obj_add_event_cb(chart, draw_event_cb, LV_EVENT_DRAW_PART_BEGIN, NULL);
lv_obj_set_style_line_width(chart, 0, LV_PART_ITEMS); /*Remove the lines*/
lv_obj_add_event_cb(chart, draw_event_cb, LV_EVENT_DRAW_TASK_ADDED, NULL);
lv_obj_add_flag(chart, LV_OBJ_FLAG_SEND_DRAW_TASK_EVENTS);
lv_obj_set_style_line_width(chart, 0, LV_PART_ITEMS);
lv_chart_set_type(chart, LV_CHART_TYPE_SCATTER);
lv_chart_set_axis_tick(chart, LV_CHART_AXIS_PRIMARY_X, 5, 5, 5, 1, true, 30);
lv_chart_set_axis_tick(chart, LV_CHART_AXIS_PRIMARY_Y, 10, 5, 6, 5, true, 50);
lv_chart_set_range(chart, LV_CHART_AXIS_PRIMARY_X, 0, 200);
lv_chart_set_range(chart, LV_CHART_AXIS_PRIMARY_Y, 0, 1000);