Merge pull request #1211 from campagnola/pyside2-uic

Add support for running pyside2-uic binary to dynamically compile ui files

README.md

@@ -38,14 +38,15 @@ Qt Bindings Test Matrix
 The following table represents the python environments we test in our CI system.  Our CI system uses Ubuntu 18.04, Windows Server 2019, and macOS 10.15 base images.
 
 | Qt-Bindings    | Python 2.7         | Python 3.6         | Python 3.7         | Python 3.8         |
-| :----------- | :----------------: | :----------------: | :----------------: | :----------------: |
+| :------------- | :----------------: | :----------------: | :----------------: | :----------------: |
 | PyQt-4         | :white_check_mark: | :x:                | :x:                | :x:                |
 | PySide1        | :white_check_mark: | :x:                | :x:                | :x:                |
-| PyQt-5.9     | :x:                | :white_check_mark: | :x:                | :x:                |
+| PyQt5-5.9      | :x:                | :white_check_mark: | :x:                | :x:                |
 | PySide2-5.13   | :x:                | :x:                | :white_check_mark: | :x:                |
-| PyQt-5.14    | :x:                | :x:                | :x:                | :white_check_mark: |
+| PyQt5-Latest   | :x:                | :x:                | :x:                | :white_check_mark: |
+| PySide2-Latest | :x:                | :x:                | :x:                | :white_check_mark: |
 
-* pyqtgraph has had some incompatabilities with PySide2-5.6, and we recommend you avoid those bindings if possible
+* pyqtgraph has had some incompatibilities with PySide2-5.6, and we recommend you avoid those bindings if possible
 * on macOS with Python 2.7 and Qt4 bindings (PyQt4 or PySide) the openGL related visualizations do not work
 
 Support

azure-test-template.yml

@@ -18,7 +18,7 @@ jobs:
         python.version: '2.7'
         qt.bindings: "pyside"
         install.method: "conda"
-      Python36-PyQt-5.9:
+      Python36-PyQt5-5.9:
         python.version: "3.6"
         qt.bindings: "pyqt"
         install.method: "conda"
@@ -26,10 +26,14 @@ jobs:
         python.version: "3.7"
         qt.bindings: "pyside2"
         install.method: "conda"
-      Python38-PyQt-Latest:
+      Python38-PyQt5-Latest:
         python.version: '3.8'
         qt.bindings: "PyQt5"
         install.method: "pip"
+      Python38-PySide2-Latest:
+        python.version: '3.8'
+        qt.bindings: "PySide2"
+        install.method: "pip"     
 
   steps:
   - task: DownloadPipelineArtifact@2

examples/PlotWidget.py

@@ -13,7 +13,7 @@ import numpy as np
 import pyqtgraph as pg
 
 #QtGui.QApplication.setGraphicsSystem('raster')
-app = QtGui.QApplication([])
+app = pg.mkQApp()
 mw = QtGui.QMainWindow()
 mw.setWindowTitle('pyqtgraph example: PlotWidget')
 mw.resize(800,800)

examples/test_examples.py

@@ -150,7 +150,12 @@ conditionalExamples = {
     )
 }
 
-@pytest.mark.skipif(Qt.QT_LIB == "PySide2" and "Qt.QtVersion.startswith('5.14')", reason="new PySide2 doesn't have loadUi functionality")
+@pytest.mark.skipif(
+    Qt.QT_LIB == "PySide2"
+    and tuple(map(int, Qt.PySide2.__version__.split("."))) >= (5, 14) 
+    and tuple(map(int, Qt.PySide2.__version__.split("."))) < (5, 14, 2, 2), 
+    reason="new PySide2 doesn't have loadUi functionality"
+)
 @pytest.mark.parametrize(
     "frontend, f",
     [

pyqtgraph/Qt.py

@@ -10,7 +10,7 @@ This module exists to smooth out some of the differences between PySide and PyQt
 
 """
 
-import os, sys, re, time
+import os, sys, re, time, subprocess, warnings
 
 from .python2_3 import asUnicode
 
@@ -105,22 +105,36 @@ def _loadUiType(uiFile):
     if QT_LIB == "PYSIDE":
         import pysideuic
     else:
+        try:
             import pyside2uic as pysideuic
-    import xml.etree.ElementTree as xml
+        except ImportError:
+            # later vserions of pyside2 have dropped pysideuic; use the uic binary instead.
+            pysideuic = None
 
+    # get class names from ui file
+    import xml.etree.ElementTree as xml
     parsed = xml.parse(uiFile)
     widget_class = parsed.find('widget').get('class')
     form_class = parsed.find('class').text
 
-    with open(uiFile, 'r') as f:
+    # convert ui file to python code
+    if pysideuic is None:
+        pyside2version = tuple(map(int, PySide2.__version__.split(".")))
+        if pyside2version >= (5, 14) and pyside2version < (5, 14, 2, 2):
+            warnings.warn('For UI compilation, it is recommended to upgrade to PySide >= 5.15')
+        uipy = subprocess.check_output(['pyside2-uic', uiFile])
+    else:
         o = _StringIO()
-        frame = {}
-
+        with open(uiFile, 'r') as f:
             pysideuic.compileUi(f, o, indent=0)
-        pyc = compile(o.getvalue(), '<string>', 'exec')
+        uipy = o.getvalue()
+
+    # exceute python code
+    pyc = compile(uipy, '<string>', 'exec')
+    frame = {}
     exec(pyc, frame)
 
-        #Fetch the base_class and form class based on their type in the xml from designer
+    # fetch the base_class and form class based on their type in the xml from designer
     form_class = frame['Ui_%s'%form_class]
     base_class = eval('QtGui.%s'%widget_class)
 

pyqtgraph/tests/test_qt.py

@@ -15,7 +15,12 @@ def test_isQObjectAlive():
 
 @pytest.mark.skipif(pg.Qt.QT_LIB == 'PySide', reason='pysideuic does not appear to be '
                                                      'packaged with conda')
-@pytest.mark.skipif(pg.Qt.QT_LIB == "PySide2" and "pg.Qt.QtVersion.startswith('5.14')", reason="new PySide2 doesn't have loadUi functionality")
+@pytest.mark.skipif(
+    pg.Qt.QT_LIB == "PySide2"
+    and tuple(map(int, pg.Qt.PySide2.__version__.split("."))) >= (5, 14) 
+    and tuple(map(int, pg.Qt.PySide2.__version__.split("."))) < (5, 14, 2, 2), 
+    reason="new PySide2 doesn't have loadUi functionality"
+)
 def test_loadUiType():
     path = os.path.dirname(__file__)
     formClass, baseClass = pg.Qt.loadUiType(os.path.join(path, 'uictest.ui'))