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examples(micropython): add a few missing MP examples (#3672)

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This commit is contained in:
Uli Raich
2022-09-21 11:21:36 +02:00
committed by GitHub
parent d5e6ffdd87
commit 29ec34be77
16 changed files with 1151 additions and 27 deletions
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65
examples/widgets/chart/lv_example_chart_4.py
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@@ -1,24 +1,38 @@
#!/opt/bin/lv_micropython -i
import lvgl as lv
import display_driver
def event_cb(e):
code = e.get_code()
chart = e.get_target()
if code == lv.EVENT.VALUE_CHANGED:
chart.invalidate()
if code == lv.EVENT.REFR_EXT_DRAW_SIZE:
# s = lv.coord_t.__cast__(e.get_param())
# print("s: {:d}".format(s))
e.set_ext_draw_size(20)
elif code == lv.EVENT.DRAW_POST_END:
id = lv.chart.get_pressed_point(chart)
if id == lv.CHART_POINT_NONE:
id = chart.get_pressed_point()
if id == lv.CHART_POINT_NONE :
return
# print("Selected point ", id)
for i in range(len(series)):
p = lv.point_t()
chart.get_point_pos_by_id(series[i], id, p)
value = series_points[i][id]
buf = lv.SYMBOL.DUMMY + "$" + str(value)
# print("Selected point {:d}".format(id))
ser = chart.get_series_next(None)
while(ser) :
p = lv.point_t()
chart.get_point_pos_by_id(ser, id, p)
# print("point coords: x: {:d}, y: {:d}".format(p.x,p.y))
y_array = chart.get_y_array(ser)
value = y_array[id]
buf = lv.SYMBOL.DUMMY + "{:2d}".format(value)
draw_rect_dsc = lv.draw_rect_dsc_t()
draw_rect_dsc.init()
draw_rect_dsc.bg_color = lv.color_black()
@@ -26,23 +40,27 @@ def event_cb(e):
draw_rect_dsc.radius = 3
draw_rect_dsc.bg_img_src = buf
draw_rect_dsc.bg_img_recolor = lv.color_white()
a = lv.area_t()
coords = lv.area_t()
chart.get_coords(coords)
# print("coords: x1: {:d}, y1: {:d}".format(coords.x1, coords.y1))
a = lv.area_t()
a.x1 = coords.x1 + p.x - 20
a.x2 = coords.x1 + p.x + 20
a.y1 = coords.y1 + p.y - 30
a.y2 = coords.y1 + p.y - 10
clip_area = lv.area_t.__cast__(e.get_param())
lv.draw_rect(a, clip_area, draw_rect_dsc)
# print("a: x1: {:d}, x2: {:d}, y1: {:d}, y2: {:d}".format(a.x1,a.x2,a.y1,a.y2))
draw_ctx = e.get_draw_ctx()
draw_ctx.rect(draw_rect_dsc, a)
ser = chart.get_series_next(ser)
elif code == lv.EVENT.RELEASED:
chart.invalidate()
#
# Add ticks and labels to the axis and demonstrate scrolling
#
# Show the value of the pressed points
#
# Create a chart
@@ -51,6 +69,7 @@ chart.set_size(200, 150)
chart.center()
chart.add_event_cb(event_cb, lv.EVENT.ALL, None)
chart.refresh_ext_draw_size()
# Zoom in a little in X
@@ -59,15 +78,7 @@ chart.set_zoom_x(800)
# Add two data series
ser1 = chart.add_series(lv.palette_main(lv.PALETTE.RED), lv.chart.AXIS.PRIMARY_Y)
ser2 = chart.add_series(lv.palette_main(lv.PALETTE.GREEN), lv.chart.AXIS.PRIMARY_Y)
ser1_p = []
ser2_p = []
for i in range(10):
ser1_p.append(lv.rand(60,90))
ser2_p.append(lv.rand(10,40))
ser1.y_points = ser1_p
ser2.y_points = ser2_p
series = [ser1,ser2]
series_points=[ser1_p,ser2_p]
chart.set_next_value(ser1, lv.rand(60, 90))
chart.set_next_value(ser2, lv.rand(10, 40))