From 192ceb7c684dacba7c0c56c243b7ae3629fd3e3d Mon Sep 17 00:00:00 2001
From: yumoqing <yumoqing@gmail.com>
Date: Wed, 26 Feb 2020 20:48:52 +0800
Subject: [PATCH] 'bugfix'

---
 kivyblocks/charts/__init__.py |   0
 kivyblocks/colorcalc.py       | 170 ++++++++++++++++++++++++++++++++++
 2 files changed, 170 insertions(+)
 create mode 100644 kivyblocks/charts/__init__.py
 create mode 100644 kivyblocks/colorcalc.py

diff --git a/kivyblocks/charts/__init__.py b/kivyblocks/charts/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/kivyblocks/colorcalc.py b/kivyblocks/colorcalc.py
new file mode 100644
index 0000000..9223ab4
--- /dev/null
+++ b/kivyblocks/colorcalc.py
@@ -0,0 +1,170 @@
+from kivy.utils import get_color_from_hex
+from kivy.app import App
+from kivy.uix.widget import Widget
+from kivy.graphics import Color, Rectangle, Ellipse
+from kivy.uix.boxlayout import BoxLayout
+import math
+
+def toArrayColor(color):
+	if isinstance(color,str):
+		sc = color
+		return get_color_from_hex(sc)
+	return color
+	
+def distance(color1,color2):
+	color1 = toArrayColor(color1)
+	color2 = toArrayColor(color2)
+	x = math.pow(abs(color2[0] - color1[0]),2) + \
+		math.pow(abs(color2[1] - color1[1]),2) + \
+		math.pow(abs(color2[2] - color1[2]),2)
+	d = math.sqrt(x)
+
+def reverseColor(color):
+	center = [0.5,0.5,0.5]
+	if color == [0.5,0.5,0.5]:
+		return [1,1,1]
+	d = distance(color,center)
+	d1 = d + 0.5
+	point= [0,0,0]
+	for i in range(3):
+		m = color[i] - center[i]
+		m1 = m * d1 / d
+		point[i] = color[i] - m1 if m < 0? color[i] + m1
+	return point
+
+#DIVIDE
+def divideColor(color1,color2,divide_cnt):
+	color1 = toArrayColor(color1)
+	color2 = toArrayColor(color2)
+	return divide(color1,color2,divide_cnt)
+
+def divide(point1,point2,divide_cnt):
+	ps = [point1]
+	dim = len(point1)
+	for i in range(1,divide_cnt):
+		p = []
+		cnt = divide_cnt
+		for j in range(dim):
+			m = (i*point2[j] + (cnt - i) * point1[j]) / cnt
+			p.append(m)
+		ps.append(p)
+	ps.append(point2)
+	return ps
+
+class Bar(Widget):
+	"""
+	a BAR class
+	"""
+	def __init__(self,**options):
+		"""
+		options={
+			width,
+			height,
+			title,
+			keyField,
+			valueField,
+			data=[
+				{
+					name,
+					value,
+				},{
+				}
+			]
+		}
+		"""
+		self.options = options
+		self.initflag = False
+		super().__init__()
+		self.bind(size=self.onSize,pos=self.onSize)
+
+	def data2bar(self):
+		data = self.options.get('data',[])
+		kvs = [ [i[self.options['keyField']],i[self.options['valueField']]] for i in data ]
+		m = max([i[1] for i in kvs ])
+		cnt = len(kvs)
+		points = divide([0,0],[self.width,0],cnt)
+		color1='8833ee'
+		color2='ed8234'
+		colors = divideColor(color1,color2,cnt-1)
+		self.canvas.clear()
+		for i in range(cnt):
+			h = self.height * kvs[i][1] / m
+			with self.canvas:
+				Color(*colors[i])
+				Rectangle(pos=points[i],
+					size=(points[i+1][0] - points[i][0],h))
+		
+	def onSize(self,o,v):
+		self.build()
+
+	def build(self):
+		self.initflag = True
+		self.data2bar()
+
+class Pie(Widget):
+	def __init__(self,**options):
+		"""
+		options={
+			width,
+			height,
+			title,
+			keyField,
+			valueField,
+			data=[
+				{
+					name,
+					value,
+				},{
+				}
+			]
+		}
+		"""
+		self.options = options
+		self.initflag = False
+		super().__init__()
+		self.bind(size=self.onSize,pos=self.onSize)
+
+	def data2pie(self):
+		data = self.options.get('data',[])
+		kvs = [ [i[self.options['keyField']],i[self.options['valueField']]] for i in data ]
+		total = sum([i[1] for i in kvs ])
+		start_degree = 0
+		cnt = len(kvs)
+		color1='8833ee'
+		color2='ed8234'
+		colors = divideColor(color1,color2,cnt-1)
+		self.canvas.clear()
+		for i in range(cnt):
+			degree = start_degree + 360 * kvs[i][1] / total
+			with self.canvas:
+				Color(*colors[i])
+				Ellipse(pos=self.pos,
+					size=self.size,
+						angle_start=start_degree,
+						angle_end= degree)
+			start_degree = degree
+		
+	def onSize(self,o,v):
+		self.data2pie()
+
+class MyApp(App):
+	def build(self):
+		d = {
+			"keyField":"name",
+			"valueField":"value",
+			"data":[
+				{'name':'you','value':102.0},
+				{'name':'me','value':42.0},
+				{'name':'she','value':92.0},
+				{'name':'she','value':52.0},
+				{'name':'she','value':42.0},
+				{'name':'she','value':82.0},
+				{'name':'she','value':17.0},
+				{'name':'he','value':77.0}
+			]
+		}
+
+		return Pie(**d)
+
+if __name__ == '__main__':
+	MyApp().run()