96 lines
2.8 KiB
Python
96 lines
2.8 KiB
Python
from utime import ticks_ms
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import gc
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ITEM_CNT = 200
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def draw_event_cb(e):
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obj = e.get_target()
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dsc = lv.obj_draw_part_dsc_t.__cast__(e.get_param())
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# If the cells are drawn...
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if dsc.part == lv.PART.ITEMS:
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chk = obj.has_cell_ctrl(dsc.id, 0, lv.table.CELL_CTRL.CUSTOM_1)
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rect_dsc = lv.draw_rect_dsc_t()
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rect_dsc.init()
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if chk:
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rect_dsc.bg_color = lv.theme_get_color_primary(obj)
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else:
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rect_dsc.bg_color = lv.palette_lighten(lv.PALETTE.GREY, 2)
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rect_dsc.radius = lv.RADIUS.CIRCLE
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sw_area = lv.area_t()
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sw_area.x1 = dsc.draw_area.x2 - 50
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sw_area.x2 = sw_area.x1 + 40
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sw_area.y1 = dsc.draw_area.y1 + dsc.draw_area.get_height() // 2 - 10
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sw_area.y2 = sw_area.y1 + 20
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dsc.draw_ctx.rect(rect_dsc, sw_area)
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rect_dsc.bg_color = lv.color_white()
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if chk:
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sw_area.x2 -= 2
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sw_area.x1 = sw_area.x2 - 16
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else:
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sw_area.x1 += 2
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sw_area.x2 = sw_area.x1 + 16
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sw_area.y1 += 2
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sw_area.y2 -= 2
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dsc.draw_ctx.rect(rect_dsc, sw_area)
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def change_event_cb(e):
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obj = e.get_target()
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row = lv.C_Pointer()
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col = lv.C_Pointer()
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table.get_selected_cell(row, col)
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# print("row: ",row.uint_val)
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chk = table.has_cell_ctrl(row.uint_val, 0, lv.table.CELL_CTRL.CUSTOM_1)
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if chk:
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table.clear_cell_ctrl(row.uint_val, 0, lv.table.CELL_CTRL.CUSTOM_1)
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else:
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table.add_cell_ctrl(row.uint_val, 0, lv.table.CELL_CTRL.CUSTOM_1)
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#
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# A very light-weighted list created from table
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#
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# Measure memory usage
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gc.enable()
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gc.collect()
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mem_free = gc.mem_free()
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print("mem_free: ", mem_free)
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t = ticks_ms()
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print("ticks: ", t)
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table = lv.table(lv.scr_act())
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# Set a smaller height to the table. It'll make it scrollable
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table.set_size(150, 200)
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table.set_col_width(0, 150)
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table.set_row_cnt(ITEM_CNT) # Not required but avoids a lot of memory reallocation lv_table_set_set_value
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table.set_col_cnt(1)
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# Don't make the cell pressed, we will draw something different in the event
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table.remove_style(None, lv.PART.ITEMS | lv.STATE.PRESSED)
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for i in range(ITEM_CNT):
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table.set_cell_value(i, 0, "Item " + str(i+1))
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table.align(lv.ALIGN.CENTER, 0, -20)
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# Add an event callback to apply some custom drawing
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table.add_event_cb(draw_event_cb, lv.EVENT.DRAW_PART_END, None)
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table.add_event_cb(change_event_cb, lv.EVENT.VALUE_CHANGED, None)
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gc.collect()
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mem_used = mem_free - gc.mem_free()
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elaps = ticks_ms()-t
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label = lv.label(lv.scr_act())
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label.set_text(str(ITEM_CNT) + " items were created in " + str(elaps) + " ms\n using " + str(mem_used) + " bytes of memory")
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#label.set_text(str(ITEM_CNT) + " items were created in " + str(elaps) + " ms")
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label.align(lv.ALIGN.BOTTOM_MID, 0, -10)
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