PySide6: Re-add QStateMachine

The code was moved from QtCore into a separate library, QStateMachine,
within the qtscxml repository.

Re-add tests and fix examples.

Task-number: PYSIDE-904
Task-number: PYSIDE-1482
Change-Id: I977b4835b3345fb342c369e4fdd92646118f7fda
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>

9 files changed, 50 insertions, 35 deletions

diff --git a/examples/widgets/animation/animatedtiles/animatedtiles.py b/examples/widgets/animation/animatedtiles/animatedtiles.py
index 3ec1b475b..b5a030235 100644
--- a/examples/widgets/animation/animatedtiles/animatedtiles.py
+++ b/examples/widgets/animation/animatedtiles/animatedtiles.py
@@ -2,7 +2,7 @@
 #############################################################################
 ##
 ## Copyright (C) 2010 Riverbank Computing Limited.
-## Copyright (C) 2016 The Qt Company Ltd.
+## Copyright (C) 2021 The Qt Company Ltd.
 ## Contact: http://www.qt.io/licensing/
 ##
 ## This file is part of the Qt for Python examples of the Qt Toolkit.
@@ -40,7 +40,7 @@
 ##
 #############################################################################
 
-from PySide6 import QtCore, QtGui, QtWidgets
+from PySide6 import QtCore, QtGui, QtStateMachine, QtWidgets
 
 import animatedtiles_rc
 
@@ -179,14 +179,16 @@ if __name__ == '__main__':
     buttonParent.setZValue(65)
 
     # States.
-    rootState = QtCore.QState()
-    ellipseState = QtCore.QState(rootState)
-    figure8State = QtCore.QState(rootState)
-    randomState = QtCore.QState(rootState)
-    tiledState = QtCore.QState(rootState)
-    centeredState = QtCore.QState(rootState)
+    rootState = QtStateMachine.QState()
+    ellipseState = QtStateMachine.QState(rootState)
+    figure8State = QtStateMachine.QState(rootState)
+    randomState = QtStateMachine.QState(rootState)
+    tiledState = QtStateMachine.QState(rootState)
+    centeredState = QtStateMachine.QState(rootState)
 
     # Values.
+    generator = QtCore.QRandomGenerator.global_()
+
     for i, item in enumerate(items):
         # Ellipse.
         ellipseState.assignProperty(item, 'pos',
@@ -200,8 +202,8 @@ if __name__ == '__main__':
 
         # Random.
         randomState.assignProperty(item, 'pos',
-                QtCore.QPointF(-250 + QtCore.qrand() % 500,
-                        -250 + QtCore.qrand() % 500))
+                QtCore.QPointF(-250 + generator.bounded(0, 500),
+                               -250 + generator.bounded(0, 500)))
 
         # Tiled.
         tiledState.assignProperty(item, 'pos',
@@ -221,7 +223,7 @@ if __name__ == '__main__':
             QtGui.QPainter.Antialiasing | QtGui.QPainter.SmoothPixmapTransform)
     view.show()
 
-    states = QtCore.QStateMachine()
+    states = QtStateMachine.QStateMachine()
     states.addState(rootState)
     states.setInitialState(rootState)
     rootState.setInitialState(centeredState)
diff --git a/examples/widgets/animation/appchooser/appchooser.py b/examples/widgets/animation/appchooser/appchooser.py
index 55cd3c1d5..5c9e9c6c1 100644
--- a/examples/widgets/animation/appchooser/appchooser.py
+++ b/examples/widgets/animation/appchooser/appchooser.py
@@ -2,7 +2,7 @@
 #############################################################################
 ##
 ## Copyright (C) 2010 Riverbank Computing Limited.
-## Copyright (C) 2016 The Qt Company Ltd.
+## Copyright (C) 2021 The Qt Company Ltd.
 ## Contact: http://www.qt.io/licensing/
 ##
 ## This file is part of the Qt for Python examples of the Qt Toolkit.
@@ -40,7 +40,7 @@
 ##
 #############################################################################
 
-from PySide6 import QtCore, QtGui, QtWidgets
+from PySide6 import QtCore, QtGui, QtStateMachine, QtWidgets
 
 import appchooser_rc
 
@@ -71,7 +71,7 @@ class Pixmap(QtWidgets.QGraphicsWidget):
 
 def createStates(objects, selectedRect, parent):
     for obj in objects:
-        state = QtCore.QState(parent)
+        state = QtStateMachine.QState(parent)
         state.assignProperty(obj, 'geometry', selectedRect)
         parent.addTransition(obj.clicked, state)
 
@@ -111,13 +111,13 @@ if __name__ == '__main__':
     window.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
     window.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
 
-    machine = QtCore.QStateMachine()
-    machine.setGlobalRestorePolicy(QtCore.QStateMachine.RestoreProperties)
+    machine = QtStateMachine.QStateMachine()
+    machine.setGlobalRestorePolicy(QtStateMachine.QStateMachine.RestoreProperties)
 
-    group = QtCore.QState(machine)
+    group = QtStateMachine.QState(machine)
     selectedRect = QtCore.QRect(86, 86, 128, 128)
 
-    idleState = QtCore.QState(group)
+    idleState = QtStateMachine.QState(group)
     group.setInitialState(idleState)
 
     objects = [p1, p2, p3, p4]
diff --git a/examples/widgets/animation/states/states.py b/examples/widgets/animation/states/states.py
index 363b5af6c..77c76bd9e 100644
--- a/examples/widgets/animation/states/states.py
+++ b/examples/widgets/animation/states/states.py
@@ -2,7 +2,7 @@
 #############################################################################
 ##
 ## Copyright (C) 2010 Riverbank Computing Limited.
-## Copyright (C) 2016 The Qt Company Ltd.
+## Copyright (C) 2021 The Qt Company Ltd.
 ## Contact: http://www.qt.io/licensing/
 ##
 ## This file is part of the Qt for Python examples of the Qt Toolkit.
@@ -40,7 +40,7 @@
 ##
 #############################################################################
 
-from PySide6 import QtCore, QtGui, QtWidgets
+from PySide6 import QtCore, QtGui, QtStateMachine, QtWidgets
 
 import states_rc
 
@@ -116,10 +116,10 @@ if __name__ == '__main__':
     scene.addItem(p5)
     scene.addItem(p6)
 
-    machine = QtCore.QStateMachine()
-    state1 = QtCore.QState(machine)
-    state2 = QtCore.QState(machine)
-    state3 = QtCore.QState(machine)
+    machine = QtStateMachine.QStateMachine()
+    state1 = QtStateMachine.QState(machine)
+    state2 = QtStateMachine.QState(machine)
+    state3 = QtStateMachine.QState(machine)
     machine.setInitialState(state1)
 
     # State 1.
diff --git a/examples/widgets/state-machine/eventtrans.py b/examples/widgets/state-machine/eventtrans.py
index 3445832a0..312b4e258 100644
--- a/examples/widgets/state-machine/eventtrans.py
+++ b/examples/widgets/state-machine/eventtrans.py
@@ -2,7 +2,7 @@
 #############################################################################
 ##
 ## Copyright (C) 2010 velociraptor Genjix <aphidia@hotmail.com>
-## Copyright (C) 2016 The Qt Company Ltd.
+## Copyright (C) 2021 The Qt Company Ltd.
 ## Contact: http://www.qt.io/licensing/
 ##
 ## This file is part of the Qt for Python examples of the Qt Toolkit.
@@ -42,6 +42,8 @@
 
 from PySide6.QtWidgets import *
 from PySide6.QtCore import *
+from PySide6.QtStateMachine import QEventTransition, QState, QStateMachine
+
 
 class MainWindow(QMainWindow):
     def __init__(self):
diff --git a/examples/widgets/state-machine/factstates.py b/examples/widgets/state-machine/factstates.py
index 64b9613ec..3608f2a49 100644
--- a/examples/widgets/state-machine/factstates.py
+++ b/examples/widgets/state-machine/factstates.py
@@ -2,7 +2,7 @@
 #############################################################################
 ##
 ## Copyright (C) 2010 velociraptor Genjix <aphidia@hotmail.com>
-## Copyright (C) 2016 The Qt Company Ltd.
+## Copyright (C) 2021 The Qt Company Ltd.
 ## Contact: http://www.qt.io/licensing/
 ##
 ## This file is part of the Qt for Python examples of the Qt Toolkit.
@@ -42,6 +42,9 @@
 
 from PySide6.QtWidgets import *
 from PySide6.QtCore import *
+from PySide6.QtStateMachine import (QFinalState, QSignalTransition, QState,
+                                    QStateMachine)
+
 
 class Factorial(QObject):
     xChanged = Signal(int)
diff --git a/examples/widgets/state-machine/pingpong.py b/examples/widgets/state-machine/pingpong.py
index 6d64bebc6..f2e1f59f7 100644
--- a/examples/widgets/state-machine/pingpong.py
+++ b/examples/widgets/state-machine/pingpong.py
@@ -2,7 +2,7 @@
 #############################################################################
 ##
 ## Copyright (C) 2010 velociraptor Genjix <aphidia@hotmail.com>
-## Copyright (C) 2016 The Qt Company Ltd.
+## Copyright (C) 2021 The Qt Company Ltd.
 ## Contact: http://www.qt.io/licensing/
 ##
 ## This file is part of the Qt for Python examples of the Qt Toolkit.
@@ -42,6 +42,8 @@
 
 from PySide6.QtWidgets import *
 from PySide6.QtCore import *
+from PySide6.QtStateMachine import QAbstractTransition, QState, QStateMachine
+
 
 class PingEvent(QEvent):
     def __init__(self):
diff --git a/examples/widgets/state-machine/rogue.py b/examples/widgets/state-machine/rogue.py
index af37b522b..b830d6023 100644
--- a/examples/widgets/state-machine/rogue.py
+++ b/examples/widgets/state-machine/rogue.py
@@ -2,7 +2,7 @@
 #############################################################################
 ##
 ## Copyright (C) 2010 velociraptor Genjix <aphidia@hotmail.com>
-## Copyright (C) 2016 The Qt Company Ltd.
+## Copyright (C) 2021 The Qt Company Ltd.
 ## Contact: http://www.qt.io/licensing/
 ##
 ## This file is part of the Qt for Python examples of the Qt Toolkit.
@@ -43,6 +43,9 @@
 from PySide6.QtWidgets import *
 from PySide6.QtGui import *
 from PySide6.QtCore import *
+from PySide6.QtStateMachine import (QEventTransition, QFinalState,
+                                    QKeyEventTransition, QState, QStateMachine)
+
 
 class MovementTransition(QEventTransition):
     def __init__(self, window):
@@ -83,12 +86,11 @@ class MainWindow(QMainWindow):
         self.height = 20
         self.statusStr = ''
 
-        database = QFontDatabase()
         font = QFont()
-        if 'Monospace' in database.families():
+        if 'Monospace' in QFontDatabase.families():
             font = QFont('Monospace', 12)
         else:
-            for family in database.families():
+            for family in QFontDatabase.families():
                 if database.isFixedPitch(family):
                     font = QFont(family, 12)
         self.setFont(font)
@@ -98,12 +100,12 @@ class MainWindow(QMainWindow):
         self.show()
     def setupMap(self):
         self.map = []
-        qsrand(QTime(0, 0, 0).secsTo(QTime.currentTime()))
+        generator = QRandomGenerator().global_()
         for x in range(self.width):
             column = []
             for y in range(self.height):
                 if x == 0 or x == self.width - 1 or y == 0 or \
-                  y == self.height - 1 or qrand() % 40 == 0:
+                  y == self.height - 1 or generator.bounded(0, 40) == 0:
                     column.append('#')
                 else:
                     column.append('.')
diff --git a/examples/widgets/state-machine/trafficlight.py b/examples/widgets/state-machine/trafficlight.py
index 4aa8d560e..3631fdbbb 100644
--- a/examples/widgets/state-machine/trafficlight.py
+++ b/examples/widgets/state-machine/trafficlight.py
@@ -43,6 +43,8 @@
 from PySide6.QtWidgets import *
 from PySide6.QtGui import *
 from PySide6.QtCore import *
+from PySide6.QtStateMachine import QFinalState, QState, QStateMachine
+
 
 class LightWidget(QWidget):
     def __init__(self, color):
@@ -83,7 +85,7 @@ class TrafficLightWidget(QWidget):
         self.greenLight = LightWidget(Qt.green)
         vbox.addWidget(self.greenLight)
         pal = QPalette()
-        pal.setColor(QPalette.Background, Qt.black)
+        pal.setColor(QPalette.Window, Qt.black)
         self.setPalette(pal)
         self.setAutoFillBackground(True)
 
diff --git a/examples/widgets/state-machine/twowaybutton.py b/examples/widgets/state-machine/twowaybutton.py
index 44a011d69..6b3c58359 100644
--- a/examples/widgets/state-machine/twowaybutton.py
+++ b/examples/widgets/state-machine/twowaybutton.py
@@ -2,7 +2,7 @@
 #############################################################################
 ##
 ## Copyright (C) 2010 velociraptor Genjix <aphidia@hotmail.com>
-## Copyright (C) 2016 The Qt Company Ltd.
+## Copyright (C) 2021 The Qt Company Ltd.
 ## Contact: http://www.qt.io/licensing/
 ##
 ## This file is part of the Qt for Python examples of the Qt Toolkit.
@@ -42,6 +42,8 @@
 
 from PySide6.QtWidgets import *
 from PySide6.QtCore import *
+from PySide6.QtStateMachine import QState, QStateMachine
+
 
 if __name__ == '__main__':
     import sys