mirror of
https://github.com/lvgl/lvgl.git
synced 2025-01-14 06:42:58 +08:00
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
#include "../../../lvgl.h"
|
|
#if LV_USE_METER && LV_BUILD_EXAMPLES
|
|
|
|
static lv_obj_t * meter;
|
|
|
|
static void set_value(void * indic, int32_t v)
|
|
{
|
|
lv_meter_set_indicator_value(meter, indic, v);
|
|
}
|
|
|
|
/**
|
|
* A simple meter
|
|
*/
|
|
void lv_example_meter_1(void)
|
|
{
|
|
meter = lv_meter_create(lv_scr_act(), NULL);
|
|
lv_obj_align(meter, NULL, LV_ALIGN_CENTER, 0, 0);
|
|
|
|
/*Add a scale first*/
|
|
lv_meter_scale_t * scale = lv_meter_add_scale(meter);
|
|
lv_meter_set_scale_ticks(meter, scale, 51, 2, 10, lv_color_grey());
|
|
lv_meter_set_scale_major_ticks(meter, scale, 10, 4, 15, lv_color_black(), 10);
|
|
|
|
lv_meter_indicator_t * indic;
|
|
|
|
/*Add a red arc to the end */
|
|
indic = lv_meter_add_arc(meter, scale, 3, lv_color_red(), 1);
|
|
lv_meter_set_indicator_start_value(meter, indic, 80);
|
|
lv_meter_set_indicator_end_value(meter, indic, 100);
|
|
|
|
/*Make the tick lines red at the end of the scale*/
|
|
indic = lv_meter_add_scale_lines(meter, scale, lv_color_red(), lv_color_red(), false, 0);
|
|
lv_meter_set_indicator_start_value(meter, indic, 80);
|
|
lv_meter_set_indicator_end_value(meter, indic, 100);
|
|
|
|
/*Add a needle line indicator*/
|
|
indic = lv_meter_add_needle_line(meter, scale, 4, lv_color_grey(), -10);
|
|
|
|
/*Create an animation to set the value*/
|
|
lv_anim_t a;
|
|
lv_anim_init(&a);
|
|
lv_anim_set_exec_cb(&a, set_value);
|
|
lv_anim_set_var(&a, indic);
|
|
lv_anim_set_values(&a, 0, 100);
|
|
lv_anim_set_time(&a, 2000);
|
|
lv_anim_set_repeat_delay(&a, 100);
|
|
lv_anim_set_playback_time(&a, 500);
|
|
lv_anim_set_playback_delay(&a, 100);
|
|
lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
|
|
lv_anim_start(&a);
|
|
}
|
|
|
|
#endif
|