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Thomas Farstrike
100 lines
3.1 KiB
Python
100 lines
3.1 KiB
Python
import mpos.ui
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import lvgl as lv
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indev_error_x = 160
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indev_error_y = 120
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DARKPINK = lv.color_hex(0xEC048C)
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def get_xy():
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indev = lv.indev_active()
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if indev:
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point = lv.point_t()
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indev.get_point(point)
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return point.x, point.y
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else:
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return indev_error_x,indev_error_y # make it visible that this occurred
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# doesnt work:
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def draw_line(x, y):
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global canvas
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# Line drawing like this doesn't work:
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layer = lv.layer_t()
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canvas.init_layer(layer)
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dsc = lv.draw_line_dsc_t()
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dsc.color = DARKPINK
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dsc.width = 4
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dsc.round_end = 1
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dsc.round_start = 1
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dsc.p1 = lv.point_precise_t()
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dsc.p1.x = x
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dsc.p1.y = y
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dsc.p2 = lv.point_precise_t()
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dsc.p2.x = 100
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dsc.p2.y = 200
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#layer.draw_line(dsc) doesnt exist!
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lv.draw_line(layer,dsc) # doesnt do anything!
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canvas.finish_layer(layer)
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def touch_cb(event):
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global canvas
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event_code=event.get_code()
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# Ignore:
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# =======
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# 19: HIT_TEST
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# COVER_CHECK
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# DRAW_MAIN
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# DRAW_MAIN_BEGIN
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# DRAW_MAIN_END
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# DRAW_POST
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# DRAW_POST_BEGIN
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# DRAW_POST_END
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# GET_SELF_SIZE
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if event_code not in [19,23,25,26,27,28,29,30,49]:
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name = mpos.ui.get_event_name(event_code)
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#print(f"lv_event_t: code={event_code}, name={name}") # target={event.get_target()}, user_data={event.get_user_data()}, param={event.get_param()}
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if event_code == lv.EVENT.PRESSING: # this is probably enough
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#if event_code in [lv.EVENT.PRESSED, lv.EVENT.PRESSING, lv.EVENT.LONG_PRESSED, lv.EVENT.LONG_PRESSED_REPEAT]:
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x, y = get_xy()
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# drawing a point works:
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#canvas.set_px(x,y,lv.color_black(),lv.OPA.COVER)
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#
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# drawing a square like this works:
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#for dx in range(-5,5):
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# for dy in range(-5,5):
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# canvas.set_px(x+dx,y+dy,DARKPINK,lv.OPA.COVER)
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#
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# drawing a circle works:
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radius = 7 # Set desired radius
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if x == indev_error_x and y == indev_error_y:
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radius = 25 # in case of indev error
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square = radius * radius
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for dx in range(-radius, radius):
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for dy in range(-radius, radius):
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if dx * dx + dy * dy <= square:
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newx, newy = x + dx, y + dy
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if 0 <= newx <= hor_res and 0 <= newy <= ver_res: # don't draw outside of canvas because that may crash
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canvas.set_px(x + dx, y + dy, DARKPINK, lv.OPA.COVER)
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main_screen = lv.obj()
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canvas = lv.canvas(main_screen)
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disp = lv.display_get_default()
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hor_res = disp.get_horizontal_resolution()
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ver_res = disp.get_vertical_resolution()
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canvas.set_size(hor_res, ver_res)
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canvas.set_style_bg_color(lv.color_white(), 0)
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buffer = bytearray(hor_res * ver_res * 4)
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canvas.set_buffer(buffer, hor_res, ver_res, lv.COLOR_FORMAT.NATIVE)
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canvas.fill_bg(lv.color_white(), lv.OPA.COVER)
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canvas.add_flag(lv.obj.FLAG.CLICKABLE)
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canvas.add_event_cb(touch_cb, lv.EVENT.ALL, None)
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mpos.ui.load_screen(main_screen)
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