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41 lines
1.1 KiB
Python
41 lines
1.1 KiB
Python
# Module 'Histogram'
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from Buttons import *
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from Resize import Resize
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# A Histogram displays a histogram of numeric data.
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# It reacts to resize events by resizing itself,
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# leaving the same amount of space around the borders.
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# (This is geometry management, and should really be implemented
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# by a different group of classes, but for now this hack is OK.)
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#
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class HistogramAppearance() = Resize(), LabelAppearance():
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#
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def define(self, (win, bounds, ydata, scale)):
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self.init_appearance(win, bounds)
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self.init_resize()
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self.ydata = ydata
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self.scale = scale # (min, max)
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return self
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#
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def setdata(self, (ydata, scale)):
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self.ydata = ydata
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self.scale = scale # (min, max)
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self.win.change(self.bounds)
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#
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def drawit(self, d):
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ydata = self.ydata
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(left, top), (right, bottom) = self.bounds
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min, max = self.scale
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size = max-min
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width, height = right-left, bottom-top
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for i in range(len(ydata)):
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h0 = left + i * width/len(ydata)
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h1 = left + (i+1) * width/len(ydata)
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v0 = top + height - (self.ydata[i]-min)*height/size
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v1 = top + height
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d.paint((h0, v0), (h1, v1))
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#
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class Histogram() = HistogramAppearance(), NoReactivity(): pass
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