# MIT License
#
# Copyright (c) 2021 Eugenio Parodi <ceccopierangiolieugenio AT googlemail DOT com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
__all__ = ['TTkGraph']
# inspired by:
# https://grafana.com/docs/grafana/latest/panels/visualizations/graph-panel/
# And of course:
# https://github.com/aristocratos/bpytop
from TermTk.TTkCore.cfg import TTkCfg
from TermTk.TTkCore.color import TTkColor
from TermTk.TTkCore.constant import TTkK
from TermTk.TTkWidgets.widget import TTkWidget
[docs]class TTkGraph(TTkWidget):
__slots__ = ('_data', '_maxData', '_offset', '_direction', '_align', '_color')
def __init__(self, *args, **kwargs):
self._data = [[0]]
self._offset = 0
super().__init__(*args, **kwargs)
self._color = kwargs.get('color', TTkColor.RST )
self._maxData = kwargs.get('maxData', 0x1000)
self._direction = kwargs.get('direction', TTkK.RIGHT)
self._align = kwargs.get('align', TTkK.CENTER)
def color(self):
return self._color
def setColor(self, color):
if self._color != color:
self._color = color
self.update()
def addValue(self, values):
self._data.append(values)
self.update()
[docs] def paintEvent(self, canvas):
if not self._data: return
w,h = self.size()
x=0
if self._align == TTkK.CENTER:
y = h//2
elif self._align == TTkK.TOP:
y = 0
else:
y = h
v1,v2 = [0],[0]
i=0
data = self._data[-w*2:]
# TTkLog.debug(data)
# TODO: use deep unpacking technique to grab couples of values
# https://mathspp.com/blog/pydonts/enumerate-me#deep-unpacking
mv = max(max(map(max,data)),-min(map(min,data)))
zoom = 2*h/mv if mv>0 else 1.0
for i in range(len(data)):
v2 = v1
v1 = data[i]
if i%2==0:
if self._direction == TTkK.RIGHT:
canvas.drawHChart(pos=(x+i//2,y),values=(v2,v1), zoom=zoom, color=self._color.modParam(val=-y))
else:
canvas.drawHChart(pos=(w-(x+i//2),y),values=(v1,v2), zoom=zoom, color=self._color.modParam(val=-y))
if i%2==1:
if self._direction == TTkK.RIGHT:
canvas.drawHChart(pos=(x+i//2+1,y),values=(v1,v1), zoom=zoom, color=self._color.modParam(val=-y))
else:
canvas.drawHChart(pos=(w-(x+i//2+1),y),values=(v1,v1), zoom=zoom, color=self._color.modParam(val=-y))