[GUI/PySide6] hide console when launching; improve output readability

Author: Shengjie Xu

src/preppipe_gui_pyside6/execution.py

@@ -203,13 +203,17 @@ def launch(self, wait : bool = False):
     self.outputs = []
     commands = self.get_final_commands()
     self.state = ExecutionState.RUNNING
+    creationflags = 0
+    if platform.system() == 'Windows':
+      creationflags = subprocess.CREATE_NO_WINDOW
     try:
       self.proc = subprocess.Popen(
         commands,
         stdout=subprocess.PIPE,
         stderr=subprocess.STDOUT,
         env=self.composed_envs,
-        universal_newlines=False
+        universal_newlines=False,
+        creationflags=creationflags
       )
     except Exception as e:
       self.state = ExecutionState.FAILED_LAUNCH

src/preppipe_gui_pyside6/toolwidgets/execute.py

@@ -98,6 +98,7 @@ def setData(self, execinfo : ExecutionInfo):
     for key, value in execinfo.envs.items():
       self.appendPlainText(f"{key}={value}\n")
     self.appendPlainText(' '.join(self.exec.get_final_commands()) + '\n')
+    self.appendPlainText('='*20 + '\n')
     self.exec.outputAvailable.connect(self.handleOutput)
 
     for out in execinfo.specified_outputs:
@@ -135,6 +136,9 @@ def appendPlainText(self, text : str):
 
   @Slot()
   def handle_process_finished(self):
+    if self.exec is None:
+      raise RuntimeError("ExecuteWidget handle_process_finished() called before setData()")
+    self.appendPlainText('='*20 + '\n')
     if result := self.exec.result:
       exitcode = result.returncode
       if exitcode == 0: