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