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uiCrosshair.py
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# encoding: UTF-8
import sys,os
import qtpy
import pyqtgraph as pg
import datetime as dt
import numpy as np
import traceback
#from pyqtgraph.Qt import QtGui, QtCore
from qtpy import QtGui, QtCore
from pyqtgraph.Point import Point
########################################################################
# 十字光标支持
########################################################################
class Crosshair(QtCore.QObject):
"""
此类给pg.PlotWidget()添加crossHair功能,PlotWidget实例需要初始化时传入
"""
signal = QtCore.Signal(type(tuple([])))
signalInfo = QtCore.Signal(float,float)
#----------------------------------------------------------------------
def __init__(self,parent,master):
"""Constructor"""
self.__view = parent
self.master = master
super(Crosshair, self).__init__()
self.xAxis = 0
self.yAxis = 0
self.datas = None
self.yAxises = [0 for i in range(3)]
self.leftX = [0 for i in range(3)]
self.showHLine = [False for i in range(3)]
self.textPrices = [pg.TextItem('',anchor=(1,1)) for i in range(3)]
self.views = [parent.centralWidget.getItem(i+1,0) for i in range(3)]
self.rects = [self.views[i].sceneBoundingRect() for i in range(3)]
self.vLines = [pg.InfiniteLine(angle=90, movable=False) for i in range(3)]
self.hLines = [pg.InfiniteLine(angle=0, movable=False) for i in range(3)]
#mid 在y轴动态跟随最新价显示最新价和最新时间
self.__textDate = pg.TextItem('date',anchor=(1,1))
self.__textInfo = pg.TextItem('lastBarInfo')
self.__textSig = pg.TextItem('lastSigInfo',anchor=(1,0))
self.__textSubSig = pg.TextItem('lastSubSigInfo',anchor=(1,0))
self.__textVolume = pg.TextItem('lastBarVolume',anchor=(1,0))
self.__textDate.setZValue(2)
self.__textInfo.setZValue(2)
self.__textSig.setZValue(2)
self.__textSubSig.setZValue(2)
self.__textVolume.setZValue(2)
self.__textInfo.border = pg.mkPen(color=(230, 255, 0, 255), width=1.2)
for i in range(3):
self.textPrices[i].setZValue(2)
self.vLines[i].setPos(0)
self.hLines[i].setPos(0)
self.vLines[i].setZValue(0)
self.hLines[i].setZValue(0)
self.views[i].addItem(self.vLines[i])
self.views[i].addItem(self.hLines[i])
self.views[i].addItem(self.textPrices[i])
self.views[0].addItem(self.__textInfo, ignoreBounds=True)
self.views[0].addItem(self.__textSig, ignoreBounds=True)
self.views[1].addItem(self.__textVolume, ignoreBounds=True)
self.views[2].addItem(self.__textDate, ignoreBounds=True)
self.views[2].addItem(self.__textSubSig, ignoreBounds=True)
self.proxy = pg.SignalProxy(self.__view.scene().sigMouseMoved, rateLimit=360, slot=self.__mouseMoved)
# 跨线程刷新界面支持
self.signal.connect(self.update)
self.signalInfo.connect(self.plotInfo)
#----------------------------------------------------------------------
def update(self,pos):
"""刷新界面显示"""
xAxis,yAxis = pos
xAxis,yAxis = (self.xAxis,self.yAxis) if xAxis is None else (xAxis,yAxis)
self.moveTo(xAxis,yAxis)
#----------------------------------------------------------------------
def __mouseMoved(self,evt):
"""鼠标移动回调"""
pos = evt[0]
self.rects = [self.views[i].sceneBoundingRect() for i in range(3)]
for i in range(3):
self.showHLine[i] = False
if self.rects[i].contains(pos):
mousePoint = self.views[i].vb.mapSceneToView(pos)
xAxis = mousePoint.x()
yAxis = mousePoint.y()
self.yAxises[i] = yAxis
self.showHLine[i] = True
self.moveTo(xAxis,yAxis)
#----------------------------------------------------------------------
def moveTo(self,xAxis,yAxis):
xAxis,yAxis = (self.xAxis,self.yAxis) if xAxis is None else (int(xAxis),yAxis)
self.rects = [self.views[i].sceneBoundingRect() for i in range(3)]
if not xAxis or not yAxis:
return
self.xAxis = xAxis
self.yAxis = yAxis
self.vhLinesSetXY(xAxis,yAxis)
self.plotInfo(xAxis,yAxis)
self.master.volume.update()
#----------------------------------------------------------------------
def vhLinesSetXY(self,xAxis,yAxis):
"""水平和竖线位置设置"""
for i in range(3):
self.vLines[i].setPos(xAxis)
if self.showHLine[i]:
self.hLines[i].setPos(yAxis if i==0 else self.yAxises[i])
self.hLines[i].show()
else:
self.hLines[i].hide()
#----------------------------------------------------------------------
def plotInfo(self,xAxis,yAxis):
"""
被嵌入的plotWidget在需要的时候通过调用此方法显示K线信息
"""
if self.datas is None:
return
try:
# 获取K线数据
data = self.datas[xAxis]
lastdata = self.datas[xAxis-1]
tickDatetime = data['datetime']
openPrice = data['open']
closePrice = data['close']
lowPrice = data['low']
highPrice = data['high']
volume = int(data['volume'])
openInterest = int(data['openInterest'])
preClosePrice = lastdata['close']
tradePrice = abs(self.master.listSig[xAxis])
except Exception as e:
return
if(isinstance(tickDatetime,dt.datetime)):
datetimeText = dt.datetime.strftime(tickDatetime,'%Y-%m-%d %H:%M:%S')
dateText = dt.datetime.strftime(tickDatetime,'%Y-%m-%d')
timeText = dt.datetime.strftime(tickDatetime,'%H:%M:%S')
else:
datetimeText = ""
dateText = ""
timeText = ""
# 显示所有的主图技术指标
html = u'<div style="text-align: right">'
for sig in self.master.sigData:
val = self.master.sigData[sig][xAxis]
col = self.master.sigColor[sig]
html+= u'<span style="color: %s; font-size: 18px;"> %s：%.2f</span>' %(col,sig,val)
html+=u'</div>'
self.__textSig.setHtml(html)
# 显示所有的主图技术指标
html = u'<div style="text-align: right">'
for sig in self.master.subSigData:
val = self.master.subSigData[sig][xAxis]
col = self.master.subSigColor[sig]
html+= u'<span style="color: %s; font-size: 18px;"> %s：%.2f</span>' %(col,sig,val)
html+=u'</div>'
self.__textSubSig.setHtml(html)
# 和上一个收盘价比较，决定K线信息的字符颜色
cOpen = 'red' if openPrice > preClosePrice else 'green'
cClose = 'red' if closePrice > preClosePrice else 'green'
cHigh = 'red' if highPrice > preClosePrice else 'green'
cLow = 'red' if lowPrice > preClosePrice else 'green'
self.__textInfo.setHtml(
u'<div style="text-align: center; background-color:#000">\
<span style="color: white; font-size: 16px;">日期</span><br>\
<span style="color: yellow; font-size: 16px;">%s</span><br>\
<span style="color: white; font-size: 16px;">时间</span><br>\
<span style="color: yellow; font-size: 16px;">%s</span><br>\
<span style="color: white; font-size: 16px;">价格</span><br>\
<span style="color: %s; font-size: 16px;">(开) %.3f</span><br>\
<span style="color: %s; font-size: 16px;">(高) %.3f</span><br>\
<span style="color: %s; font-size: 16px;">(低) %.3f</span><br>\
<span style="color: %s; font-size: 16px;">(收) %.3f</span><br>\
<span style="color: white; font-size: 16px;">成交量</span><br>\
<span style="color: yellow; font-size: 16px;">(量) %d</span><br>\
<span style="color: white; font-size: 16px;">成交价</span><br>\
<span style="color: yellow; font-size: 16px;">(价) %.3f</span><br>\
</div>'\
% (dateText,timeText,cOpen,openPrice,cHigh,highPrice,\
cLow,lowPrice,cClose,closePrice,volume,tradePrice))
self.__textDate.setHtml(
'<div style="text-align: center">\
<span style="color: yellow; font-size: 18px;">%s</span>\
</div>'\
% (datetimeText))
self.__textVolume.setHtml(
'<div style="text-align: right">\
<span style="color: white; font-size: 18px;">VOL : %.3f</span>\
</div>'\
% (volume))
# 坐标轴宽度
rightAxisWidth = self.views[0].getAxis('right').width()
bottomAxisHeight = self.views[2].getAxis('bottom').height()
offset = QtCore.QPointF(rightAxisWidth,bottomAxisHeight)
# 各个顶点
tl = [self.views[i].vb.mapSceneToView(self.rects[i].topLeft()) for i in range(3)]
br = [self.views[i].vb.mapSceneToView(self.rects[i].bottomRight()-offset) for i in range(3)]
# 显示价格
for i in range(3):
if self.showHLine[i]:
self.textPrices[i].setHtml(
'<div style="text-align: right">\
<span style="color: yellow; font-size: 18px;">\
%0.3f\
</span>\
</div>'\
% (yAxis if i==0 else self.yAxises[i]))
self.textPrices[i].setPos(br[i].x(),yAxis if i==0 else self.yAxises[i])
self.textPrices[i].show()
else:
self.textPrices[i].hide()
# 设置坐标
self.__textInfo.setPos(tl[0])
self.__textSig.setPos(br[0].x(),tl[0].y())
self.__textSubSig.setPos(br[2].x(),tl[2].y())
self.__textVolume.setPos(br[1].x(),tl[1].y())
# 修改对称方式防止遮挡
self.__textDate.anchor = Point((1,1)) if xAxis > self.master.index else Point((0,1))
self.__textDate.setPos(xAxis,br[2].y())