/usr/lib/python3/dist-packages/gvbmod/drawers.py is in gvb 1.4-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright © 2008-2013 Pietro Battiston
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
from gi.repository import Gtk, Gdk
from scipy import shape
from time import time
from cairo import ImageSurface, FORMAT_ARGB32, Context
def one_basic(cr, size, pos, speeds = None):
spaced=1./(len(pos)+1)
cr.scale(size[0], size[1]/4)
cr.translate(0, 2)
cr.set_line_width(.01)
cr.set_source_rgb(1,0,0)
cr.move_to(0,0)
xposition=0
for ypos in pos:
xposition=xposition+spaced
cr.line_to(xposition, -ypos)
cr.line_to(1,0)
cr.stroke()
def with_speeds(cr, size, pos, speeds):
n = len(pos)
spaced=1./(n+1)
coeff = .1*n
cr.scale(size[0], size[1]/4)
cr.translate(0, 2)
cr.set_line_width(.1/n)
cr.set_source_rgb(1,0,0)
cr.move_to(0,0)
xposition=spaced
for idx in range(len(pos)):
cr.move_to(xposition,-pos[idx])
cr.rel_line_to(0,-speeds[idx]*coeff)
cr.stroke()
xposition=xposition+spaced
cr.set_line_width(.02)
cr.set_source_rgb(0,0,1)
cr.move_to(0,0)
xposition=0
for ypos in pos:
xposition=xposition+spaced
cr.line_to(xposition, -ypos)
cr.line_to(1,0)
cr.stroke()
def temperature(cr, size, pos, speeds = None):
spaced=1./(len(pos))
cr.scale(size[0], size[1]/4)
cr.translate(0, 2)
cr.set_line_width(.5)
cr.set_source_rgb(1,0,0)
cr.move_to(0,0)
xposition=0
for ypos in pos:
cr.move_to(xposition,0)
xposition=xposition+spaced
if ypos >= 1:
cr.set_source_rgb(1,1,1)
elif ypos > .5:
cr.set_source_rgb((1-ypos)/2,(1-ypos)/2,0)
elif ypos > 0:
cr.set_source_rgb(ypos/2, 1-1.5*ypos, 0)
elif ypos > -.5:
cr.set_source_rgb(0,1+2*ypos,-ypos)
else:
cr.set_source_rgb(0,0,1+ypos)
cr.line_to(xposition, 0)
cr.stroke()
def _two_colours(cr, pos, size, speeds = None):
hspaced=1./shape(pos)[0]
vspaced=1./shape(pos)[1]
cr.scale(size[0], size[1])
yposition=0
for ypos in pos:
xposition=0
for xpos in ypos:
if xpos > 0:
cr.set_source_rgb(1-xpos,1,1)
else:
cr.set_source_rgb(1,1+xpos,1)
cr.rectangle(xposition, yposition, hspaced, vspaced)
cr.fill()
xposition=xposition+hspaced
yposition=yposition+vspaced
def colours(cr, size, pos, speeds = None):
hspaced=1./shape(pos)[0]
vspaced=1./shape(pos)[1]
cr.scale(size[0], size[1])
cr.translate(0, vspaced/2)
cr.set_line_width(vspaced)
yposition=0
for ypos in pos:
xposition=0
cr.move_to(0,yposition)
for xpos in ypos:
cr.move_to(xposition, yposition)
xposition=xposition+hspaced
if xpos >= 1:
cr.set_source_rgb(1,1,1)
elif xpos > .5:
cr.set_source_rgb((1-xpos)/2,(1-xpos)/2,0)
elif xpos > 0:
cr.set_source_rgb(xpos/2, 1-1.5*xpos, 0)
elif xpos > -.5:
cr.set_source_rgb(0,1+2*xpos,-xpos)
else:
cr.set_source_rgb(0,0,1+xpos)
cr.line_to(xposition, yposition)
cr.stroke()
yposition=yposition+vspaced
def trid(cr, size, pos, speeds = None):
m,n=shape(pos)
vspaced=1./(3*n)
yposition=.3
cr.set_line_join(2)
pos = pos * .5
tr = ([[yposition for i in range(n+2)]]
+[[yposition+(j+1)*vspaced]+[yposition + (j+1)*vspaced-pos[j][i]/2 for i in range(n)]+[yposition+(j+1)*vspaced] for j in range(m)]
+[[yposition+(m+1)*vspaced for i in range(n+2)]])
cr.scale(size[0], size[1])
cr.set_line_width(.001)
top_margin = .1
for row_idx in range(m+1):
margin = top_margin*(1-(row_idx/m))
marg_under = top_margin*(1-((row_idx+1)/m))
hspaced=(1-2*margin)/(n+3)
xposition = margin + hspaced
hsp_under=(1-2*marg_under)/(n+3)
xpos_under = marg_under + hsp_under
for col_idx in range(n+1):
if tr[row_idx][col_idx+1] > tr[row_idx+1][col_idx+1]:
cr.set_source_rgba(1,0,0,.8)
else:
cr.set_source_rgba(0,1,0,.8)
cr.move_to(xposition, tr[row_idx][col_idx])
cr.line_to(xposition + hspaced, tr[row_idx][col_idx+1])
cr.line_to(xpos_under + hsp_under, tr[row_idx+1][col_idx+1])
cr.close_path()
cr.fill()
if tr[row_idx][col_idx] > tr[row_idx+1][col_idx]:
cr.set_source_rgba(1,0,0,.8)
else:
cr.set_source_rgba(0,1,0,.8)
cr.move_to(xposition, tr[row_idx][col_idx])
cr.line_to(xpos_under + hsp_under, tr[row_idx+1][col_idx+1])
cr.line_to(xpos_under, tr[row_idx+1][col_idx])
cr.close_path()
cr.fill()
cr.set_source_rgb(0,0,0)
cr.move_to(xposition, tr[row_idx][col_idx])
cr.line_to(xposition + hspaced, tr[row_idx][col_idx+1])
cr.line_to(xpos_under + hsp_under, tr[row_idx+1][col_idx+1])
cr.line_to(xpos_under, tr[row_idx+1][col_idx])
cr.close_path()
cr.stroke()
xposition=xposition+hspaced
xpos_under=xpos_under+hsp_under
def trid_speeds(cr, size, pos, speeds = None):
m,n=shape(pos)
vspaced=1./(3*n)
coeff = .05*max(m,n)
yposition=.3
cr.set_line_join(2)
pos = pos * .5
tr = ([[yposition for i in range(n+2)]]
+[[yposition+(j+1)*vspaced]+[yposition + (j+1)*vspaced-pos[j][i]/2 for i in range(n)]+[yposition+(j+1)*vspaced] for j in range(m)]
+[[yposition+(m+1)*vspaced for i in range(n+2)]])
cr.scale(size[0], size[1])
cr.set_line_width(.001)
top_margin = .1
for row_idx in range(m+1):
margin = top_margin*(1-(row_idx/m))
marg_under = top_margin*(1-((row_idx+1)/m))
hspaced=(1-2*margin)/(n+3)
xposition = margin + hspaced
hsp_under=(1-2*marg_under)/(n+3)
xpos_under = marg_under + hsp_under
# print ypos
for col_idx in range(n+1):
cr.set_line_width(.001)
if tr[row_idx][col_idx+1] > tr[row_idx+1][col_idx+1]:
cr.set_source_rgba(0,0,1,.8)
else:
cr.set_source_rgba(0,1,0,.8)
cr.move_to(xposition, tr[row_idx][col_idx])
cr.line_to(xposition + hspaced, tr[row_idx][col_idx+1])
cr.line_to(xpos_under + hsp_under, tr[row_idx+1][col_idx+1])
cr.close_path()
cr.fill()
if tr[row_idx][col_idx] > tr[row_idx+1][col_idx]:
cr.set_source_rgba(0,0,1,.8)
else:
cr.set_source_rgba(0,1,0,.8)
cr.move_to(xposition, tr[row_idx][col_idx])
cr.line_to(xpos_under + hsp_under, tr[row_idx+1][col_idx+1])
cr.line_to(xpos_under, tr[row_idx+1][col_idx])
cr.close_path()
cr.fill()
cr.set_source_rgb(0,0,0)
cr.move_to(xposition, tr[row_idx][col_idx])
cr.line_to(xposition + hspaced, tr[row_idx][col_idx+1])
cr.line_to(xpos_under + hsp_under, tr[row_idx+1][col_idx+1])
cr.line_to(xpos_under, tr[row_idx+1][col_idx])
cr.close_path()
cr.stroke()
if row_idx != 0 and col_idx != 0:
cr.set_line_width(.1/n)
cr.set_source_rgba(1,0,0,.5)
cr.move_to(xposition, tr[row_idx][col_idx])
cr.rel_line_to(0,-speeds[row_idx-1][col_idx-1]*coeff)
cr.stroke()
xposition=xposition+hspaced
xpos_under=xpos_under+hsp_under
drawers_1d = {
'wave' : one_basic,
'temp' : temperature,
'speeds': with_speeds
}
drawers_2d = {
'geo' : colours,
'3D' : trid,
'speeds': trid_speeds
}
drawers_dict={ 1: drawers_1d, 2: drawers_2d }
drawers = {1: ['wave', 'temp', 'speeds'], 2: ['3D', 'geo', 'speeds']}
class Drawer():
def __init__(self, drawing, combo, dr_type = None):
self.drawing = drawing
self.dumpdir = None
self.combo = combo
self.active = True
self.points = None
self.dim = None
self.ready = False
self.drawn = 0
self.dr_type = dr_type
self.combo.connect('changed', self.change_drawer)
if hasattr(self.drawing, 'signals_ids'):
# This means that the drawing area was already drawn by another
# drawer. This one is a possessive guy and want her to forget him.
for signal_id in self.drawing.signals_ids:
self.drawing.disconnect(signal_id)
# Throw away all his ids! You're mine now!
self.drawing.signals_ids = []
self.drawing.signals_ids.append(self.drawing.connect('draw', self.redraw))
self.size = None
def draw(self, cr):
if self.dim != len(self.points.shape):
raise
if not self.drawing.get_window():
return
if self.dumpdir:
try:
cr.set_source_surface(self._last_surface, 0, 0)
except AttributeError:
# Still no surface ready
pass
before=time()
if not hasattr(self, 'drawer'):
return
size = self.drawing.get_allocated_width(), self.drawing.get_allocated_height()
cr.rectangle(0, 0, *size)
cr.set_source_rgb(1, 1, 1)
cr.fill()
self.drawer(cr, size, self.points.pos, self.points.speeds)
self.drawn=time()
self.drawing_time = self.drawn-before
def dump_draw(self):
self._last_surface = ImageSurface(FORMAT_ARGB32, self.size[0], self.size[1])
self.cr = Context(self._last_surface)
before=time()
self.drawer(self.cr, self.size, self.points.pos, self.points.speeds)
self._last_surface.write_to_png('%s/%08d.png' % (self.dumpdir,
self.dumpindex))
self.dumpindex += 1
self.drawn=time()
self.drawing_time = self.drawn-before
self.invalidate()
def invalidate(self):
self.drawing.queue_draw()
def redraw(self, widget, cr):
self.draw(cr)
def change_drawer(self, combo):
self.dr_type = self.combo.get_active_text()
if self.dr_type in drawers[self.dim]:
self.drawer=drawers_dict[self.dim][self.dr_type]
self.drawing.queue_draw()
def configure(self, points=None, dim=None):
if not self.active:
return
if points:
self.points = points
dim = len(shape(points.pos))
if dim:
if self.dim != dim:
self.dim = dim
self.build_menu()
self.ready = True
else:
return
# if not (self.points and len(shape(self.points.pos)) == self.dim): #I won't change dimension if they don't tell me!
# return
def build_menu(self):
combo_model = Gtk.ListStore(str)
for item in drawers[self.dim]:
combo_model.append([item])
self.combo.set_model(combo_model)
if self.dr_type in drawers[self.dim]:
self.combo.set_active(drawers[self.dim].index(self.dr_type))
else:
self.combo.set_active(0)
def dump(self, dumpdir):
print("dumping in", dumpdir)
self.dumpindex = 0
if dumpdir: #This is a "start" command
self.dumpdir = dumpdir
self.size = self.drawing.get_allocated_width(), self.drawing.get_allocated_height()
self.points.changed = self.dump_draw
else: #This is a "stop" command
self.dumpdir = None
self.size = None
self.points.changed = self.invalidate
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