44 lines
1.5 KiB
Python
44 lines
1.5 KiB
Python
|
def slider_event_cb(e):
|
||
|
|
code = e.get_code()
|
||
|
|
obj = e.get_target()
|
||
|
|
|
||
|
|
# Provide some extra space for the value
|
||
|
|
if code == lv.EVENT.REFR_EXT_DRAW_SIZE:
|
||
|
|
e.set_ext_draw_size(50)
|
||
|
|
|
||
|
|
elif code == lv.EVENT.DRAW_PART_END:
|
||
|
|
# print("DRAW_PART_END")
|
||
|
|
dsc = lv.obj_draw_part_dsc_t.__cast__(e.get_param())
|
||
|
|
# print(dsc)
|
||
|
|
if dsc.part == lv.PART.INDICATOR:
|
||
|
|
label_text = "{:d} - {:d}".format(obj.get_left_value(),slider.get_value())
|
||
|
|
label_size = lv.point_t()
|
||
|
|
lv.txt_get_size(label_size, label_text, lv.font_default(), 0, 0, lv.COORD.MAX, 0)
|
||
|
|
# print(label_size.x,label_size.y)
|
||
|
|
label_area = lv.area_t()
|
||
|
|
label_area.x1 = dsc.draw_area.x1 + dsc.draw_area.get_width() // 2 - label_size.x // 2
|
||
|
|
label_area.x2 = label_area.x1 + label_size.x
|
||
|
|
label_area.y2 = dsc.draw_area.y1 - 10
|
||
|
|
label_area.y1 = label_area.y2 - label_size.y
|
||
|
|
|
||
|
|
label_draw_dsc = lv.draw_label_dsc_t()
|
||
|
|
label_draw_dsc.init()
|
||
|
|
|
||
|
|
dsc.draw_ctx.label(label_draw_dsc, label_area, label_text, None)
|
||
|
|
#
|
||
|
|
# Show the current value when the slider if pressed by extending the drawer
|
||
|
|
#
|
||
|
|
#
|
||
|
|
#Create a slider in the center of the display
|
||
|
|
|
||
|
|
slider = lv.slider(lv.scr_act())
|
||
|
|
slider.center()
|
||
|
|
|
||
|
|
slider.set_mode(lv.slider.MODE.RANGE)
|
||
|
|
slider.set_value(70, lv.ANIM.OFF)
|
||
|
|
slider.set_left_value(20, lv.ANIM.OFF)
|
||
|
|
|
||
|
|
slider.add_event_cb(slider_event_cb, lv.EVENT.ALL, None)
|
||
|
|
slider.refresh_ext_draw_size()
|
||
|
|
|