Silly splash screen stunt

Init.py

@@ -0,0 +1,9 @@
+import os
+import FreeCAD
+import XternalAppsDummy
+# The __file__ special variable isn't available in the Init.py file, so we load a dummy module located in the same directory to get its path.
+FreeCAD.ConfigSet('SplashScreen', os.path.join(os.path.dirname(XternalAppsDummy.__file__),'splash.png'))
+
+# See https://github.com/FreeCAD/FreeCAD/blob/eb6167ff89bc2b287c83d726dfcd52b775d1757e/src/Gui/MainWindow.cpp#L1512
+# for all the ways to set a splashscreen and their precedence order. I couldn't make the ~/.FreeCAD/splash_image.png work
+

InitGui.py

@@ -2,6 +2,9 @@ import sys
 
 import ExternalAppsList
 
+import StealSplash
+StealSplash.steal()
+
 myIcon = """
         /* XPM */
         static char * icon_xpm[] = {

StealSplash.py

@@ -0,0 +1,86 @@
+class Foo():
+    def __del__(self):
+        def catchSplash():
+            import PySide
+            from PySide import QtGui, QtCore
+            import pprint
+            print(QtGui.QApplication.topLevelWidgets())
+            sps = [w for w in QtGui.QApplication.topLevelWidgets() if 'PySide2.QtWidgets.QWidget' in str(w)]
+            if len(sps) == 1:
+              sps[0].hide()
+            print("toplevel=")
+            pprint.pprint(QtGui.QApplication.topLevelWidgets())
+            print("children=")
+            pprint.pprint([x.children() for x in sps])
+
+        print("del")
+        catchSplash()
+
+        import PySide
+        from PySide import QtGui, QtCore
+        tm = QtCore.QTimer()
+        tm.timeout.connect(lambda: print(catchSplash))
+        tm.start(100)
+
+        #import FreeCAD
+        #setattr(FreeCAD, "stealsplash", tm)
+
+#foo = Foo()
+print("IN stealsplash")
+
+Splash = None
+
+def isDeleted(obj):
+    try:
+        str(obj)
+        return False
+    except:
+        return True
+
+def steal():
+    def checkSplashStillHere(official, splash, tm):
+        print("check")
+        if isDeleted(official):
+            print("delete extra splash")
+            tm.stop()
+            splash.hide()
+            # TODO: properly de-allocate on the FreeCAD object
+            Splash = None
+    def catchSplash():
+        global Splash
+        import PySide
+        from PySide import QtGui, QtCore
+        import pprint
+        print(QtGui.QApplication.topLevelWidgets())
+        sps = [w for w in QtGui.QApplication.topLevelWidgets() if 'PySide2.QtWidgets.QWidget' in str(w)]
+        if len(sps) == 1:
+            # This does not work
+            try:
+                QtGui.QSplashScreen.setPixmap(sps[0], '/tmp/splash.png')
+            except:
+                pass
+            # this works, it's then possible to replace with a new splash but the progress text won't be displayed on the new splash
+            # the official splash screen also doesn't have any children, so it's not possible to get the text from there
+            # I could steal the info from the log, but unless FreeCAD was started with -l, I don't know how to access that log in Python.
+            #sps[0].hide()
+            
+            # Solution: put a transparent background on this splash, make a new one and raise this one above.
+            
+            splash = QtGui.QSplashScreen('/tmp/splash.png')
+            splash.show()
+            sps[0].raise_()
+
+            tm = QtCore.QTimer()
+            tm.timeout.connect(lambda *, official=sps[0], splash=splash, tm=tm: checkSplashStillHere(official, splash, tm))
+            tm.start(100)
+
+            import FreeCAD
+            setattr(FreeCAD, "Splash", (sps[0], splash, tm))
+
+        #print("toplevel=")
+        #pprint.pprint(QtGui.QApplication.topLevelWidgets())
+        #print("children=")
+        #pprint.pprint([x.children() for x in sps])
+
+    print("del")
+    catchSplash()

XternalAppsDummy.py

@@ -0,0 +1 @@
+"""Dummy module to extract a path to the current directory with os.path.dirname(XternalAppsDummy.__file__)"""