add PyQt6 to CI

skip tests that don't work for Qt6

add Qt6 and remove Qt4 from test_examples.py

update README.md

switch mouse tests to use QPointF

this eliminates all the special casing for different bindings

.github/workflows/main.yml

@@ -31,7 +31,7 @@ jobs:
             numpy-version: "~=1.19.0"
           - python-version: "3.9"
             qt-lib: "pyqt"
-            qt-version: "PyQt5~=5.15"
+            qt-version: "PyQt6"
             numpy-version: "~=1.19.0"
           - python-version: "3.9"
             qt-lib: "pyside"

README.md

@@ -9,7 +9,7 @@ PyQtGraph
 [![Total alerts](https://img.shields.io/lgtm/alerts/g/pyqtgraph/pyqtgraph.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/pyqtgraph/pyqtgraph/alerts/)
 [![Language grade: Python](https://img.shields.io/lgtm/grade/python/g/pyqtgraph/pyqtgraph.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/pyqtgraph/pyqtgraph/context:python)
 
-A pure-Python graphics library for PyQt5/PySide2/PySide6
+A pure-Python graphics library for PyQt5/PyQt6/PySide2/PySide6
 
 Copyright 2020 Luke Campagnola, University of North Carolina at Chapel Hill
 
@@ -36,7 +36,7 @@ Currently this means:
 * Python 3.7+
 * Qt 5.12-6.0
 * Required
-  * PyQt5, PySide2 or PySide6
+  * PyQt5, PyQt6, PySide2 or PySide6
   * `numpy` 1.17+
 * Optional
   * `scipy` for image processing
@@ -57,8 +57,9 @@ The following table represents the python environments we test in our CI system.
 | PySide2-5.12   | :white_check_mark: | :x:                | :x:                |
 | PyQt5-5.12     | :white_check_mark: | :x:                | :x:                |
 | PySide2-5.15   | :x:                | :white_check_mark: | :x:                |
-| PyQt5-5.15     | :x:                | :white_check_mark: | :white_check_mark: |
+| PyQt5-5.15     | :x:                | :white_check_mark: | :x:                |
 | PySide6-6.0    | :x:                | :x:                | :white_check_mark: |
+| PyQt6-6.0      | :x:                | :x:                | :white_check_mark: |
 
 Support
 -------

examples/test_examples.py

@@ -35,10 +35,10 @@ def buildFileList(examples, files=None):
 path = os.path.abspath(os.path.dirname(__file__))
 files = sorted(set(buildFileList(examples)))
 frontends = {
-    Qt.PYQT4: False,
     Qt.PYQT5: False,
-    Qt.PYSIDE: False,
+    Qt.PYQT6: False,
-    Qt.PYSIDE2: False
+    Qt.PYSIDE2: False,
+    Qt.PYSIDE6: False,
 }
 # sort out which of the front ends are available
 for frontend in frontends.keys():
@@ -66,13 +66,6 @@ conditionalExamples = {
         False,
         reason="Test is being problematic on CI machines"
     ),
-    "optics_demos.py": exceptionCondition(
-        not frontends[Qt.PYSIDE],
-        reason=(
-            "Test fails due to PySide bug: ",
-            "https://bugreports.qt.io/browse/PYSIDE-671"
-        )
-    ),
     'GLVolumeItem.py': exceptionCondition(
         not(platform.system() == "Darwin" and
             tuple(map(int, platform.mac_ver()[0].split("."))) >= (10, 16) and 

pyqtgraph/exporters/tests/test_matplotlib.py

@@ -7,7 +7,7 @@ pytest.importorskip("matplotlib")
 app = pg.mkQApp()
 
 skip_qt6 = pytest.mark.skipif(
-    pg.QT_LIB == "PySide6",
+    pg.QT_LIB in ["PySide6", "PyQt6"],
     reason= (
         "Matplotlib has no Qt6 support yet, "
         "see https://github.com/matplotlib/matplotlib/pull/19255"

pyqtgraph/graphicsItems/tests/test_InfiniteLine.py

@@ -63,8 +63,8 @@ def test_mouseInteraction():
     plt.setYRange(-10, 10)
 
     # test horizontal drag
-    pos = plt.plotItem.vb.mapViewToScene(pg.Point(0,5)).toPoint()
+    pos = plt.plotItem.vb.mapViewToScene(pg.Point(0,5))
-    pos2 = pos - QtCore.QPoint(200, 200)
+    pos2 = pos - QtCore.QPointF(200, 200)
     mouseMove(plt, pos)
     assert vline.mouseHovering is True and hline.mouseHovering is False
     mouseDrag(plt, pos, pos2, QtCore.Qt.LeftButton)
@@ -72,17 +72,17 @@ def test_mouseInteraction():
     assert abs(vline.value() - plt.plotItem.vb.mapSceneToView(pos2).x()) <= px
 
     # test missed drag
-    pos = plt.plotItem.vb.mapViewToScene(pg.Point(5,0)).toPoint()
+    pos = plt.plotItem.vb.mapViewToScene(pg.Point(5,0))
-    pos = pos + QtCore.QPoint(0, 6)
+    pos = pos + QtCore.QPointF(0, 6)
-    pos2 = pos + QtCore.QPoint(-20, -20)
+    pos2 = pos + QtCore.QPointF(-20, -20)
     mouseMove(plt, pos)
     assert vline.mouseHovering is False and hline.mouseHovering is False
     mouseDrag(plt, pos, pos2, QtCore.Qt.LeftButton)
     assert hline.value() == 0
 
     # test vertical drag
-    pos = plt.plotItem.vb.mapViewToScene(pg.Point(5,0)).toPoint()
+    pos = plt.plotItem.vb.mapViewToScene(pg.Point(5,0))
-    pos2 = pos - QtCore.QPoint(50, 50)
+    pos2 = pos - QtCore.QPointF(50, 50)
     mouseMove(plt, pos)
     assert vline.mouseHovering is False and hline.mouseHovering is True
     mouseDrag(plt, pos, pos2, QtCore.Qt.LeftButton)
@@ -90,8 +90,8 @@ def test_mouseInteraction():
     assert abs(hline.value() - plt.plotItem.vb.mapSceneToView(pos2).y()) <= px
 
     # test non-interactive line
-    pos = plt.plotItem.vb.mapViewToScene(pg.Point(5,-1)).toPoint()
+    pos = plt.plotItem.vb.mapViewToScene(pg.Point(5,-1))
-    pos2 = pos - QtCore.QPoint(50, 50)
+    pos2 = pos - QtCore.QPointF(50, 50)
     mouseMove(plt, pos)
     assert hline2.mouseHovering == False
     mouseDrag(plt, pos, pos2, QtCore.Qt.LeftButton)

pyqtgraph/tests/image_testing.py

@@ -257,7 +257,7 @@ def assertImageMatch(im1, im2, minCorr=None, pxThreshold=50.,
     assert im1.dtype == im2.dtype
 
     if pxCount == -1:
-        if QT_LIB in {'PyQt5', 'PySide2', 'PySide6'}:
+        if QT_LIB in {'PyQt5', 'PySide2', 'PySide6', 'PyQt6'}:
             # Qt5 generates slightly different results; relax the tolerance
             # until test images are updated.
             pxCount = int(im1.shape[0] * im1.shape[1] * 0.01)

pyqtgraph/tests/ui_testing.py

@@ -1,5 +1,5 @@
 import time
-from ..Qt import QtCore, QtGui, QtTest, QT_LIB
+from ..Qt import QtCore, QtGui, QtTest
 
 
 def resizeWindow(win, w, h, timeout=2.0):
@@ -32,8 +32,6 @@ def mousePress(widget, pos, button, modifier=None):
         widget = widget.viewport()
     if modifier is None:
         modifier = QtCore.Qt.NoModifier
-    if QT_LIB != 'PyQt5' and isinstance(pos, QtCore.QPointF):
-        pos = pos.toPoint()
     event = QtGui.QMouseEvent(QtCore.QEvent.MouseButtonPress, pos, button, QtCore.Qt.NoButton, modifier)
     QtGui.QApplication.sendEvent(widget, event)
 
@@ -43,8 +41,6 @@ def mouseRelease(widget, pos, button, modifier=None):
         widget = widget.viewport()
     if modifier is None:
         modifier = QtCore.Qt.NoModifier
-    if QT_LIB != 'PyQt5' and isinstance(pos, QtCore.QPointF):
-        pos = pos.toPoint()
     event = QtGui.QMouseEvent(QtCore.QEvent.MouseButtonRelease, pos, button, QtCore.Qt.NoButton, modifier)
     QtGui.QApplication.sendEvent(widget, event)
 
@@ -56,8 +52,6 @@ def mouseMove(widget, pos, buttons=None, modifier=None):
         modifier = QtCore.Qt.NoModifier
     if buttons is None:
         buttons = QtCore.Qt.NoButton
-    if QT_LIB != 'PyQt5' and isinstance(pos, QtCore.QPointF):
-        pos = pos.toPoint()
     event = QtGui.QMouseEvent(QtCore.QEvent.MouseMove, pos, QtCore.Qt.NoButton, buttons, modifier)
     QtGui.QApplication.sendEvent(widget, event)