Move examples from submodule to pyside-setup

Move PySide2 examples that are owned by the Qt Company
to a new examples directory.

Done-with: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io>
Task-number: PYSIDE-363
Change-Id: I14099764d9eef2bc35e067086121427955862e3a
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

1 files changed, 128 insertions, 0 deletions

diff --git a/examples/charts/memoryusage.py b/examples/charts/memoryusage.py
new file mode 100644
index 000000000..c0e0a38dd
--- /dev/null
+++ b/examples/charts/memoryusage.py
@@ -0,0 +1,128 @@
+#!/usr/bin/python
+
+#############################################################################
+##
+## Copyright (C) 2017 The Qt Company Ltd.
+## Contact: http://www.qt.io/licensing/
+##
+## This file is part of the PySide examples of the Qt Toolkit.
+##
+## $QT_BEGIN_LICENSE:BSD$
+## You may use this file under the terms of the BSD license as follows:
+##
+## "Redistribution and use in source and binary forms, with or without
+## modification, are permitted provided that the following conditions are
+## met:
+##   * Redistributions of source code must retain the above copyright
+##     notice, this list of conditions and the following disclaimer.
+##   * Redistributions in binary form must reproduce the above copyright
+##     notice, this list of conditions and the following disclaimer in
+##     the documentation and/or other materials provided with the
+##     distribution.
+##   * Neither the name of The Qt Company Ltd nor the names of its
+##     contributors may be used to endorse or promote products derived
+##     from this software without specific prior written permission.
+##
+##
+## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+"""PySide2 Charts example: Simple memory usage viewer"""
+
+import os
+import sys
+from PySide2.QtCore import QRect, QSize, QProcess
+from PySide2.QtWidgets import QApplication, QMainWindow
+from PySide2.QtCharts import QtCharts
+
+def runProcess(command, arguments):
+    process = QProcess()
+    process.start(command, arguments)
+    process.waitForFinished()
+    result = []
+    for line in str(process.readAllStandardOutput()).split(os.linesep):
+       result.append(line)
+    return result
+
+def getMemoryUsage():
+    result = []
+    if sys.platform == 'win32':
+        # Windows: Obtain memory usage in KB from 'tasklist'
+        for line in runProcess('tasklist', [])[3:]:
+            if len(line) >= 74:
+                command = line[0:23].strip()
+                if command.endswith('.exe'):
+                    command = command[0:len(command) - 4]
+                memoryUsage = float(line[64:74].strip().replace(',', '').replace('.', ''))
+                legend = ''
+                if memoryUsage > 10240:
+                    legend = '{} {}M'.format(command, round(memoryUsage / 1024))
+                else:
+                    legend = '{} {}K'.format(command, round(memoryUsage))
+                result.append([legend, memoryUsage])
+    else:
+        # Unix: Obtain memory usage percentage from 'ps'
+        psOptions = ['-e', 'v']
+        memoryColumn = 8
+        commandColumn = 9
+        if sys.platform == 'darwin':
+            psOptions = ['-e', '-v']
+            memoryColumn = 11
+            commandColumn = 12
+        for line in runProcess('ps', psOptions)[1:]:
+            tokens = line.split(None)
+            if len(tokens) > commandColumn: # Percentage and command
+                command = tokens[commandColumn]
+                if not command.startswith('['):
+                    command = os.path.basename(command)
+                    memoryUsage = round(float(tokens[memoryColumn].replace(',', '.')))
+                    legend = '{} {}%'.format(command, memoryUsage)
+                    result.append([legend, memoryUsage])
+
+    result.sort(key = lambda x: x[1], reverse=True)
+    return result
+
+class MainWindow(QMainWindow):
+
+    def __init__(self):
+        super(MainWindow, self).__init__()
+
+        self.setWindowTitle('Memory Usage')
+
+        memoryUsage = getMemoryUsage()
+        if len(memoryUsage) > 5:
+            memoryUsage = memoryUsage[0:4]
+
+        self.series = QtCharts.QPieSeries()
+        for item in memoryUsage:
+            self.series.append(item[0], item[1]);
+
+        slice = self.series.slices()[0]
+        slice.setExploded();
+        slice.setLabelVisible();
+        self.chart = QtCharts.QChart()
+        self.chart.addSeries(self.series);
+        self.chartView = QtCharts.QChartView(self.chart)
+        self.setCentralWidget(self.chartView)
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+    mainWin = MainWindow()
+    availableGeometry = app.desktop().availableGeometry(mainWin)
+    size = availableGeometry.height() * 3 / 4
+    mainWin.resize(size, size)
+    mainWin.show()
+    sys.exit(app.exec_())