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# -*- coding: utf-8 -*-
#
# Licensed under the terms of the MIT License
# Copyright (c) 2015 Pierre Raybaut
# (see LICENSE file for more details)
"""Curve benchmark example"""
SHOW = True # Show test in GUI-based test launcher
import time
import numpy as np
from qtpy.QtCore import Qt
from qtpy.QtWidgets import (
QApplication,
QGridLayout,
QLineEdit,
QMainWindow,
QTabWidget,
QTextEdit,
QWidget,
)
from qwt import QwtPlot, QwtPlotCurve
from qwt.tests import utils
COLOR_INDEX = None
def get_curve_color():
global COLOR_INDEX
colors = (Qt.blue, Qt.red, Qt.green, Qt.yellow, Qt.magenta, Qt.cyan)
if COLOR_INDEX is None:
COLOR_INDEX = 0
else:
COLOR_INDEX = (COLOR_INDEX + 1) % len(colors)
return colors[COLOR_INDEX]
PLOT_ID = 0
class BMPlot(QwtPlot):
def __init__(self, title, xdata, ydata, style, symbol=None, *args):
super(BMPlot, self).__init__(*args)
global PLOT_ID
self.setMinimumSize(200, 150)
PLOT_ID += 1
self.setTitle("%s (#%d)" % (title, PLOT_ID))
self.setAxisTitle(QwtPlot.xBottom, "x")
self.setAxisTitle(QwtPlot.yLeft, "y")
self.curve_nb = 0
for idx in range(1, 11):
self.curve_nb += 1
QwtPlotCurve.make(
xdata,
ydata * idx,
style=style,
symbol=symbol,
linecolor=get_curve_color(),
antialiased=True,
plot=self,
)
self.replot()
class BMWidget(QWidget):
def __init__(self, nbcol, points, *args, **kwargs):
super(BMWidget, self).__init__()
self.plot_nb = 0
self.curve_nb = 0
self.setup(nbcol, points, *args, **kwargs)
def params(self, *args, **kwargs):
if kwargs.get("only_lines", False):
return (("Lines", None),)
else:
return (
("Lines", None),
("Dots", None),
)
def setup(self, nbcol, points, *args, **kwargs):
x = np.linspace(0.001, 20.0, int(points))
y = (np.sin(x) / x) * np.cos(20 * x)
layout = QGridLayout()
col, row = 0, 0
for style, symbol in self.params(*args, **kwargs):
plot = BMPlot(style, x, y, getattr(QwtPlotCurve, style), symbol=symbol)
layout.addWidget(plot, row, col)
self.plot_nb += 1
self.curve_nb += plot.curve_nb
col += 1
if col >= nbcol:
row += 1
col = 0
self.text = QLineEdit()
self.text.setReadOnly(True)
self.text.setAlignment(Qt.AlignCenter)
self.text.setText("Rendering plot...")
layout.addWidget(self.text, row + 1, 0, 1, nbcol)
self.setLayout(layout)
class BMText(QTextEdit):
def __init__(self, parent=None, title=None):
super(BMText, self).__init__(parent)
self.setReadOnly(True)
library = "PythonQwt"
wintitle = self.parent().windowTitle()
if not wintitle:
wintitle = "Benchmark"
if title is None:
title = "%s example" % wintitle
self.parent().setWindowTitle("%s [%s]" % (wintitle, library))
self.setText(
"""\
<b>%s:</b><br>
(base plotting library: %s)<br><br>
Click on each tab to test if plotting performance is acceptable in terms of
GUI response time (switch between tabs, resize main windows, ...).<br>
<br><br>
<b>Benchmarks results:</b>
"""
% (title, library)
)
class CurveBenchmark1(QMainWindow):
TITLE = "Curve benchmark"
SIZE = (1000, 500)
def __init__(self, max_n=1000000, parent=None, unattended=False, **kwargs):
super(CurveBenchmark1, self).__init__(parent=parent)
title = self.TITLE
if kwargs.get("only_lines", False):
title = "%s (%s)" % (title, "only lines")
self.setWindowTitle(title)
self.tabs = QTabWidget()
self.setCentralWidget(self.tabs)
self.text = BMText(self)
self.tabs.addTab(self.text, "Contents")
self.resize(*self.SIZE)
self.durations = []
# Force window to show up and refresh (for test purpose only)
self.show()
QApplication.processEvents()
t0g = time.time()
self.run_benchmark(max_n, unattended, **kwargs)
dt = time.time() - t0g
self.text.append("<br><br><u>Total elapsed time</u>: %d ms" % (dt * 1e3))
self.tabs.setCurrentIndex(1 if unattended else 0)
def process_iteration(self, title, description, widget, t0):
self.tabs.addTab(widget, title)
self.tabs.setCurrentWidget(widget)
# Force widget to refresh (for test purpose only)
QApplication.processEvents()
duration = (time.time() - t0) * 1000
self.durations.append(duration)
time_str = "Elapsed time: %d ms" % duration
widget.text.setText(time_str)
self.text.append("<br><i>%s:</i><br>%s" % (description, time_str))
print("[%s] %s" % (utils.get_lib_versions(), time_str))
def run_benchmark(self, max_n, unattended, **kwargs):
max_n = 1000 if unattended else max_n
iterations = 0 if unattended else 4
for idx in range(iterations, -1, -1):
points = int(max_n / 10**idx)
t0 = time.time()
widget = BMWidget(2, points, **kwargs)
title = "%d points" % points
description = "%d plots with %d curves of %d points" % (
widget.plot_nb,
widget.curve_nb,
points,
)
self.process_iteration(title, description, widget, t0)
def test_curvebenchmark1():
"""Curve benchmark example"""
utils.test_widget(CurveBenchmark1, options=False)
if __name__ == "__main__":
test_curvebenchmark1()
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