138 lines
4.1 KiB
Python
138 lines
4.1 KiB
Python
"""
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Füllstandsanzeige Tank
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0: "Fuel",
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1: "Water",
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2: "Gray Water",
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3: "Live Well",
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4: "Oil",
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5: "Black Water",
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6: "Fuel Gasoline",
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14: "Error",
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15: "Unavailable"
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"""
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import os
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import cairo
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import math
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from .page import Page
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import nmea2000.lookup
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class Fluid(Page):
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def __init__(self, pageno, cfg, appdata, boatdata, fluidtype):
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super().__init__(pageno, cfg, appdata, boatdata)
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self.fluidtype = int(fluidtype)
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if self.fluidtype == 0:
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self.symbol = cairo.ImageSurface.create_from_png(os.path.join(cfg['imgpath'], "fuelpump.png"))
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else:
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self.symbol = None
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def draw(self, ctx):
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# Zentrum Instrument
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cx = 200
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cy = 150
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# Radius
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r = 110
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# Füllstand von 0 - 100%
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# 0 = -120°, 100 = +120°
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level = self.bd.tank[0].volume or 0
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angle = -120 + level * 2.4
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# Rahmen
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ctx.set_source_rgb(*self.fgcolor)
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ctx.set_line_width(3)
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ctx.arc(cx, cy, r, 0, 2*math.pi)
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ctx.stroke()
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# Symbol, sofern vorhanden
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if self.symbol:
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ctx.save()
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ctx.set_source_surface(self.symbol, cx - 8, cy - 50)
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ctx.paint()
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ctx.restore()
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# Fluidtype
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ctx.select_font_face("Ubuntu", cairo.FontSlant.NORMAL, cairo.FontWeight.BOLD)
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ctx.set_font_size(24)
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ctx.move_to(20, 60)
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ctx.show_text(nmea2000.lookup.fluidtype[self.fluidtype])
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ctx.stroke()
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# Zeigerrahmen im Zentrum
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ctx.arc(cx, cy, 8, 0, 2*math.pi)
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ctx.stroke()
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# Zeiger in Nullposition
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# Variante 1, einseitig
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#p = ((cx - 1, cy - (r - 20)), (cx + 1, cy - (r - 20)), (cx + 4, cy), (cx - 4, cy))
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# Variante 2, überstehend
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p = ((cx - 1, cy - (r - 20)), (cx + 1, cy - (r - 20)), (cx + 6, cy + 15), (cx - 6, cy + 15))
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# Zeiger für aktuellen Meßwert
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zeiger = self.rotate((cx, cy), p, angle)
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# Zeiger zeichnen
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ctx.move_to(*zeiger[0])
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for point in zeiger[1:]:
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ctx.line_to(*point)
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ctx.fill()
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# Lösche das Zentrum heraus
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ctx.set_source_rgb(*self.bgcolor)
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ctx.arc(cx, cy, 6, 0, 2*math.pi)
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ctx.fill()
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ctx.set_source_rgb(*self.fgcolor)
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# Simple Skala direkt zeichnen
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# 50%-Wert oben in der Mitte
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ctx.select_font_face("Ubuntu", cairo.FontSlant.NORMAL, cairo.FontWeight.BOLD)
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ctx.set_font_size(16)
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ctx.move_to(cx, cy -r)
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ctx.line_to(cx, cy -r + 16)
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# linker Anschlag 0%
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self.draw_text_center(ctx, cx, cy - r + 30, "1/2")
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l = self.rotate((cx, cy), ((cx, cy - r + 16), (cx, cy - r)), -120)
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ctx.move_to(*l[0])
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ctx.line_to(*l[1])
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# rechter Anschlag 100%
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l = self.rotate((cx, cy), ((cx, cy - r + 16), (cx, cy - r)), 120)
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ctx.move_to(*l[0])
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ctx.line_to(*l[1])
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# 25%
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l = self.rotate((cx, cy), ((cx, cy - r + 16), (cx, cy - r)), -60)
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ctx.move_to(*l[0])
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ctx.line_to(*l[1])
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tx, ty = self.rotate((cx, cy), ((cx, cy - r + 30),), -60)[0]
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self.draw_text_center(ctx, tx, ty, "1/4")
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# 75%
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l = self.rotate((cx, cy), ((cx, cy - r + 16), (cx, cy - r)), 60)
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ctx.move_to(*l[0])
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ctx.line_to(*l[1])
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tx, ty = self.rotate((cx, cy), ((cx, cy - r + 30),), 60)[0]
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self.draw_text_center(ctx, tx, ty, "3/4")
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ctx.set_font_size(24)
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tx, ty = self.rotate((cx, cy), ((cx, cy - r + 30),), -130)[0]
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self.draw_text_center(ctx, tx, ty, "E")
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tx, ty = self.rotate((cx, cy), ((cx, cy - r + 30),), 130)[0]
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self.draw_text_center(ctx, tx, ty, "F")
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ctx.stroke()
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self.draw_text_center(ctx, cx, cy + r - 20, f"{level:.0f}%")
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ctx.stroke()
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# Skalenpunkte
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# Alle 5% ein Punkt aber nur da wo noch kein Strich ist
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for angle in [x for x in range(-120, 120, 12) if x not in (-120, -60, 0, 60, 120)]:
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x, y = self.rotate((cx, cy), ((cx, cy - r + 10),), angle)[0]
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ctx.arc(x, y, 2, 0, 2*math.pi)
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ctx.fill()
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