You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
This repo is archived. You can view files and clone it, but cannot push or open issues/pull-requests.
ndg/lib/lvgl/examples/widgets/bar/lv_example_bar_6.py

55 lines
1.6 KiB
Python

def set_value(bar, v):
bar.set_value(v, lv.ANIM.OFF)
def event_cb(e):
dsc = lv.obj_draw_part_dsc_t.__cast__(e.get_param())
if dsc.part != lv.PART.INDICATOR:
return
obj= e.get_target()
label_dsc = lv.draw_label_dsc_t()
label_dsc.init()
# label_dsc.font = LV_FONT_DEFAULT;
value_txt = str(obj.get_value())
txt_size = lv.point_t()
lv.txt_get_size(txt_size, value_txt, label_dsc.font, label_dsc.letter_space, label_dsc.line_space, lv.COORD.MAX, label_dsc.flag)
txt_area = lv.area_t()
# If the indicator is long enough put the text inside on the right
if dsc.draw_area.get_width() > txt_size.x + 20:
txt_area.x2 = dsc.draw_area.x2 - 5
txt_area.x1 = txt_area.x2 - txt_size.x + 1
label_dsc.color = lv.color_white()
# If the indicator is still short put the text out of it on the right*/
else:
txt_area.x1 = dsc.draw_area.x2 + 5
txt_area.x2 = txt_area.x1 + txt_size.x - 1
label_dsc.color = lv.color_black()
txt_area.y1 = dsc.draw_area.y1 + (dsc.draw_area.get_height() - txt_size.y) // 2
txt_area.y2 = txt_area.y1 + txt_size.y - 1
dsc.draw_ctx.label(label_dsc, txt_area, value_txt, None)
#
# Custom drawer on the bar to display the current value
#
bar = lv.bar(lv.scr_act())
bar.add_event_cb(event_cb, lv.EVENT.DRAW_PART_END, None)
bar.set_size(200, 20)
bar.center()
a = lv.anim_t()
a.init()
a.set_var(bar)
a.set_values(0, 100)
a.set_custom_exec_cb(lambda a,val: set_value(bar,val))
a.set_time(2000)
a.set_playback_time(2000)
a.set_repeat_count(lv.ANIM_REPEAT.INFINITE)
lv.anim_t.start(a)