48 lines
1.1 KiB
Python
48 lines
1.1 KiB
Python
def sw_event_cb(e,panel):
|
|
|
|
code = e.get_code()
|
|
sw = e.get_target()
|
|
|
|
if code == lv.EVENT.VALUE_CHANGED:
|
|
|
|
if sw.has_state(lv.STATE.CHECKED):
|
|
panel.add_flag(lv.obj.FLAG.SCROLL_ONE)
|
|
else:
|
|
panel.clear_flag(lv.obj.FLAG.SCROLL_ONE)
|
|
|
|
|
|
#
|
|
# Show an example to scroll snap
|
|
#
|
|
|
|
panel = lv.obj(lv.scr_act())
|
|
panel.set_size(280, 150)
|
|
panel.set_scroll_snap_x(lv.SCROLL_SNAP.CENTER)
|
|
panel.set_flex_flow(lv.FLEX_FLOW.ROW)
|
|
panel.center()
|
|
|
|
for i in range(10):
|
|
btn = lv.btn(panel)
|
|
btn.set_size(150, 100)
|
|
|
|
label = lv.label(btn)
|
|
if i == 3:
|
|
label.set_text("Panel {:d}\nno snap".format(i))
|
|
btn.clear_flag(lv.obj.FLAG.SNAPPABLE)
|
|
else:
|
|
label.set_text("Panel {:d}".format(i))
|
|
label.center()
|
|
|
|
panel.update_snap(lv.ANIM.ON)
|
|
|
|
|
|
# Switch between "One scroll" and "Normal scroll" mode
|
|
sw = lv.switch(lv.scr_act())
|
|
sw.align(lv.ALIGN.TOP_RIGHT, -20, 10)
|
|
sw.add_event_cb(lambda evt: sw_event_cb(evt,panel), lv.EVENT.ALL, None)
|
|
label = lv.label(lv.scr_act())
|
|
label.set_text("One scroll")
|
|
label.align_to(sw, lv.ALIGN.OUT_BOTTOM_MID, 0, 5)
|
|
|
|
|