/usr/lib/python3/dist-packages/expeyes/eyeplot.py is in python-expeyes 3.4.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Plotting libray, using Tkinter for expEYES
Author : Ajith Kumar B.P, bpajith@gmail.com
License : GNU GPL version 3
'''
from __future__ import print_function
import gettext
gettext.bindtextdomain("expeyes")
gettext.textdomain('expeyes')
_ = gettext.gettext
import os, sys
if sys.version_info.major==3:
from tkinter import *
else:
from Tkinter import *
AXWIDTH = 30 # width of the axis display canvas
AYWIDTH = 50 # width of the axis display canvas
NUMDIV =5
NGRID1 = 10
NGRID2 = 10
BGCOL = 'white'
PLOTBGCOL = 'white'
LINEWIDTH = 1.5
LINECOL = ['black', 'red', 'blue', 'magenta', 'cyan', 'green', 'yellow', 'orange','gray', 'gray2']
LABELCOL = 'blue'
TEXTCOL = 'black'
GRIDCOL = 'gray'
NGRID1 = 10
NGRID2 = 5
class graph:
'''
Class for displaying items in a canvas using a world coordinate
system. The range of the world coordinate system is specified by
calling the setWorld method.
'''
border = 2
pad = 0
bordcol = 'grey' # Border color
gridcol = 'grey' # Grid color
bgcolor = '#dbdbdb' # background color for all
plotbg = 'ivory' # Plot window background color
textcolor = 'blue'
traces = []
xtext = []
ytext = []
legendtext = []
scaletext = []
markerval = []
markertext = None
xlabel = _('mSec') # Default axis lables
ylabel = 'V'
markers = []
def __init__(self, parent, width=400., height=300.,color = 'white', labels = True, bip=True):
self.parent = parent
self.labels = labels
self.SCX = width
self.SCY = height
self.plotbg = color
self.bipolar = bip
if labels == False:
f = Frame(self.parent, bg = 'black', borderwidth = self.border, relief = FLAT)
f.pack(side=TOP, anchor = S)
self.canvas = Canvas(f, bg = self.plotbg, width = width, height = height)
self.canvas.pack(side = TOP, anchor = S)
else:
f = Frame(parent, bg = self.bgcolor)
f.pack(side=TOP)
self.yaxis = Canvas(f, width = AYWIDTH, height = height, bg = self.bgcolor)
self.yaxis.pack(side = LEFT, anchor = N, pady = self.border)
f1 = Frame(f)
f1.pack(side=LEFT)
self.canvas = Canvas(f1, bg = self.plotbg, width = width, height = height, bd =0, relief=FLAT)
self.canvas.pack(side = TOP)
self.canvas.bind("<Button-1>", self.show_xy)
self.xaxis = Canvas(f1, width = width, height = AXWIDTH, bg = self.bgcolor)
self.xaxis.pack(side = LEFT, anchor = N, padx = self.border)
self.canvas.create_rectangle ([(1,1),(width,height)], outline = self.bordcol)
Canvas(f, width = 4, height = height, bg = self.bgcolor).pack(side=LEFT) # spacer only
self.setWorld(0 , 0, self.SCX, self.SCY, self.xlabel, self.ylabel) # initialize scale factors
self.grid()
return
"""----------------- Another window -----------------"""
def clear_fm(self):
try:
self.canvas.delete(self.msg_window)
except:
pass
def disp(self, msg):
self.clear_fm()
win = Button(text = msg, bg = 'yellow', fg='blue', font=("Helvetica", 30), command=self.clear_fm)
self.msg_window = self.canvas.create_window(self.SCX/4, self.SCY/10, window=win, anchor=NW)
"""---------- Manage the Marker's ---------"""
def enable_marker(self, marker_max = 3):
self.canvas.bind("<Button-3>", self.show_marker)
self.CURMAX = marker_max
def clear_markers(self):
for k in self.markers:
self.canvas.delete(k[2]) #third item is the text on the canvas
self.markers = []
def show_marker(self, event):
if len(self.markers) >= self.CURMAX:
self.clear_markers()
return
ix = self.canvas.canvasx(event.x) - self.border
iy = self.SCY - self.canvas.canvasy(event.y) #- self.border
x = ix * self.xscale + self.xmin
y = iy * self.yscale + self.ymin
m = self.canvas.create_text(ix, self.SCY-iy, text = 'x', fill = 'red')
self.markers.append((x,y,m))
print (x,y)
def get_markers(self):
x = []
y = []
for k in self.markers:
x.append(k[0])
y.append(k[1])
return x,y
"""--------------------------------------------------"""
def setWorld(self, x1, y1, x2, y2, xlabel, ylabel):
'''
Calculates the scale factors for world to screen coordinate
transformation.
'''
self.xlabel = xlabel
self.ylabel = ylabel
self.xmin = float(x1)
self.ymin = float(y1)
self.xmax = float(x2)
self.ymax = float(y2)
self.xscale = (self.xmax - self.xmin) / (self.SCX)
self.yscale = (self.ymax - self.ymin) / (self.SCY)
self.mark_labels()
if self.labels == True:
return
try:
for txt in self.scaletext:
self.canvas.delete(txt)
self.scaletext = []
except:
pass
s = _('%3.2f %s/div')%( (self.xmax-self.xmin)/NGRID1, xlabel)
t = self.canvas.create_text(2, self.SCY*11/20,
anchor = SW, justify = LEFT,
fill = LABELCOL, text = s)
self.scaletext.append(t)
s = _('%3.2f %s/div')%( (self.ymax-self.ymin)/NGRID1, ylabel)
t = self.canvas.create_text(self.SCX/2, self.SCY-10,
anchor = SW, justify = LEFT,
fill = LABELCOL, text = s)
self.scaletext.append(t)
def mark_labels(self):
'''
Draws the X and Y axis divisions and labels. Only used
internally.
'''
if self.labels == False:
return
for t in self.xtext: # display after dividing by scale factors
self.xaxis.delete(t)
for t in self.ytext:
self.yaxis.delete(t)
self.xtext = []
self.ytext = []
self.xtext.append(self.xaxis.create_text(
int(self.SCX/2),
AXWIDTH-2,
text = self.xlabel,
anchor=S,
fill = self.textcolor))
dx = float(self.SCX)/NUMDIV
for x in range(0,NUMDIV+1):
a = x *(self.xmax - self.xmin)/NUMDIV + self.xmin
s = '%4.1f'%(a)
adjust = 0
if x == 0: adjust = 6
if x == NUMDIV: adjust = -10
t = self.xaxis.create_text(int(x*dx)+adjust,1,text = s, anchor=N, fill = self.textcolor)
self.xtext.append(t)
self.ytext.append(self.yaxis.create_text(
2,self.SCY/2,
text = self.ylabel, anchor=W, fill = self.textcolor))
dy = float(self.SCY)/NUMDIV
for y in range(0,NUMDIV+1):
a = y*(self.ymax - self.ymin)/5 # + self.ymin
if self.ymax > 99:
s = '%4.0f'%(self.ymax-a)
else:
s = '%4.1f'%(self.ymax-a)
adjust = 0
if y == 0: adjust = 6
if y == NUMDIV: adjust = -5
t = self.yaxis.create_text(
AYWIDTH, int(y*dy)+adjust,
text = s,anchor = E, fill = self.textcolor)
self.ytext.append(t)
def show_xy(self,event): #Prints the XY coordinates of the current cursor position
ix = self.canvas.canvasx(event.x) - self.border
iy = self.SCY - self.canvas.canvasy(event.y) #- self.border
x = ix * self.xscale + self.xmin
y = iy * self.yscale + self.ymin
s = 'x = %5.3f\ny = %5.3f' % (x,y)
try:
self.canvas.delete(self.markertext)
except:
pass
self.markertext = self.canvas.create_text(
self.border + 1,
self.SCY-1, anchor = SW, justify = LEFT, text = s)
self.markerval = [x,y]
def grid(self):
dx = (self.xmax - self.xmin) / NGRID1
dy = (self.ymax - self.ymin) / NGRID1
x = self.xmin + dx
print (self.ymin)
if self.bipolar == True:
ip = self.w2s((self.xmax/2,self.xmax/2),(self.ymin,self.ymax))
self.canvas.create_line(ip, fill=self.gridcol, width=LINEWIDTH)
ip = self.w2s((self.xmin,self.xmax),(self.ymax/2,self.ymax/2))
self.canvas.create_line(ip, fill=self.gridcol, width=LINEWIDTH)
while x < self.xmax:
ip = self.w2s((x,x),(self.ymin,self.ymax))
self.canvas.create_line(ip, fill=self.gridcol, dash= (1,int(dy/NGRID2)-1), width=LINEWIDTH)
x = x +dx
y = self.ymin + dy
while y < self.ymax:
ip = self.w2s( (self.xmin,self.xmax), (y,y) )
self.canvas.create_line(ip, fill=GRIDCOL, dash= (1,int(dx/NGRID2)-1), width=LINEWIDTH)
y = y +dy
def w2s(self, x,y): # World to Screen xy conversion before plotting anything
ip = []
for i in range(len(x)):
ix = self.border + int( (x[i] - self.xmin) / self.xscale)
iy = self.border + int( (y[i] - self.ymin) / self.yscale)
iy = self.SCY - iy
ip.append((ix,iy))
return ip
def round4axis(self,n):
if n == 0:
return n
sign = 1
if n < 0:
sign = -1
n = -1 * n
div = 0
if n > 10:
while n > 10:
n = n/10
div = div + 1
res = (int(n)+1)* 10**div
return sign * float(res)
elif n <= 10:
while n < 1:
n = n*10
div = div + 1
res = (int(n)+1)
return sign * float(res) / 10**div
def auto_scale(self, x,y):
'''
Sets the range of the world co-ordinate system from two lists
of x and y. The range of y-coordinates are rounded. (for
ymin=5 and ymax=95 will set the limits from 0 to 100)
'''
xmin = x[0]
xmax = x[-1]
ymin = 1.0e10
ymax = 1.0e-10
for k in y:
if k > ymax: ymax = k
if k < ymin: ymin = k
ymin = self.round4axis(ymin)
ymax = self.round4axis(ymax)
if ymin == ymax: # avoid a divide by zero error
return
print (xmin,ymin,xmax,ymax)
self.setWorld(xmin,ymin,xmax,ymax,self.xlabel,self.ylabel)
def box(self, x1, y1, x2, y2, col):
ip = self.w2s((x1,y1),(x2,y2))
self.canvas.create_rectangle(ip, outline=col)
def text(self, x, y, text, col=0):
ip = self.w2s( [float(x)],[float(y)])
x = ip[0][0]
t = self.canvas.create_text(
ip[0][0],ip[0][1], text = text,
anchor = W, fill = LINECOL[col%len(LINECOL)])
self.legendtext.append(t)
def delete_text(self):
for t in self.legendtext:
self.canvas.delete(t)
self.legendtext = []
def line(self, x,y, col=0, smooth = True):
ip = self.w2s(x,y)
t = self.canvas.create_line(ip, fill=LINECOL[col%len(LINECOL)], width=LINEWIDTH, smooth = smooth)
self.traces.append(t)
def delete_lines(self):
for t in self.traces:
self.canvas.delete(t)
self.traces = []
"""---------------------- graph class end -------------------"""
def plot(x,y,title = None, xl = None, yl = None):
# plot the x,y coordinate list to a new , non-blocking, window.
if title==None:
title=_('EYES plot')
if xl==None:
xl=_('mS')
if yl==None:
yl=_('V')
w = Tk()
w.title(title)
g = graph(w, width=600, height=400)
g.xlabel = xl
g.ylabel = yl
g.auto_scale(x,y)
g.line(x,y)
return g
"""------ popup window to displaying image ----------"""
def abs_path(): # Returns the absolute path of the python program
name = sys.argv[0]
dirname = os.path.dirname(name)
print (dirname)
if dirname != '':
return os.path.dirname(name) + os.sep
else:
return '.' + os.sep
img = None
def pop_image(sch, title = _('Schematic')):
global img
try:
import Image, ImageTk, tkFont
top = Toplevel()
Label(top,text=title,fg='blue').pack(side=TOP)
top.title(_('Schematic'))
im = Image.open(abs_path() + sch)
w,h= im.size
img = ImageTk.PhotoImage(im)
panel = Canvas(top, bg='white', width = w, height = h)
panel.create_image(0,0,image = img, anchor = NW)
panel.pack()
except:
pass
# Local Variables:
# python-indent: 4
# End:
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