70 lines
1.8 KiB
Python
70 lines
1.8 KiB
Python
"""
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Wind / Windlupe
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TODO
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- Windlupe:
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Wenn der Wind achterlich kommt, dann andere Ansicht / Skala verwenden
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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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class Wind(Page):
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def __init__(self, pageno, cfg, appdata, boatdata):
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super().__init__(pageno, cfg, appdata, boatdata)
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self.buttonlabel[1] = 'MODE'
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self.mode = 'L' # (W)ind (L)ens
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try:
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self.symbol = cairo.ImageSurface.create_from_png(os.path.join(cfg['imgpath'], "front.png"))
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except:
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self.symbol = None
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print("Warning: Missing image: {}".format(os.path.join(cfg['imgpath'], "front.png")))
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def handle_key(self, buttonid):
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if buttonid == 1:
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if self.mode == 'W':
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self.mode = 'L'
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else:
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self.mode = 'W'
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return True
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return False
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def draw_wind(self, ctx):
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# Name
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ctx.set_font_size(40)
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ctx.move_to(20, 100)
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ctx.show_text("Apparent Wind")
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def draw_lens(self, ctx):
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if self.symbol:
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ctx.save()
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ctx.set_source_surface(self.symbol, 140, 30)
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ctx.paint()
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ctx.restore()
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ctx.set_line_width(2)
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# Analoginstrument
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cx = 200
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cy = 150
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r = 135
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ctx.arc(cx, cy, r, math.radians(110), math.radians(250))
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ctx.stroke()
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ctx.arc(cx, cy, r, math.radians(-70), math.radians(70))
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ctx.stroke()
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# Windstärke als Digitalwert
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ctx.select_font_face("DSEG7 Classic")
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ctx.set_font_size(40)
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self.draw_text_center(ctx, cx, cy + 80, "14.3", fix1=True)
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def draw(self, ctx):
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ctx.select_font_face("Ubuntu", cairo.FontSlant.NORMAL, cairo.FontWeight.BOLD)
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if self.mode == 'W':
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self.draw_wind(ctx)
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else:
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self.draw_lens(ctx)
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