Github Actions CI building (#3901)

- Add .github/workflows/ci.yml
- Delete .travis.yml (to disable)
- Adjust exit code and query_tests.py setup to
  reduce crashes on exit

timeline_webview: Fix app references

.github/workflows/ci.yml

@@ -0,0 +1,33 @@
+name: CI Build
+on: [push, pull_request]
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-18.04, ubuntu-20.04]
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Install dependencies
+      # Some projects don't allow in-source building, so create a separate build directory
+      # We'll use this as our working directory for all subsequent commands
+      shell: bash
+      run: |
+        sudo add-apt-repository ppa:openshot.developers/libopenshot-daily
+        sudo apt update
+        sudo apt install libopenshot-audio-dev libopenshot-dev python3-openshot
+        sudo apt install qttranslations5-l10n libssl-dev xvfb
+        sudo apt install python3-pyqt5 python3-pyqt5.qtsvg python3-pyqt5.qtwebengine python3-pyqt5.qtopengl python3-zmq python3-xdg
+        pip3 install setuptools wheel
+        pip3 install cx_Freeze==6.1 distro defusedxml requests certifi chardet urllib3
+
+    - name: Build Python package
+      # Use a bash shell so we can use the same syntax for environment variable
+      # access regardless of the host operating system
+      shell: bash
+      run: python3 freeze.py build
+
+    - name: Test
+      shell: bash
+      run: xvfb-run --auto-servernum --server-num=1 --server-args "-screen 0 1920x1080x24" python3 ./src/tests/query_tests.py

src/tests/query_tests.py

@@ -34,6 +34,7 @@
 import random
 import unittest
 import uuid
+from PyQt5.QtGui import QGuiApplication
 from classes.app import OpenShotApp
 from classes import info
 import openshot  # Python module for libopenshot (required video editing module installed separately)
@@ -46,7 +47,7 @@ class TestQueryClass(unittest.TestCase):
     def setUpClass(TestQueryClass):
         """ Init unit test data """
         # Create Qt application
-        TestQueryClass.app = OpenShotApp(sys.argv, mode="unittest")
+        TestQueryClass.app = OpenShotApp([], mode="unittest")
         TestQueryClass.clip_ids = []
         TestQueryClass.file_ids = []
         TestQueryClass.transition_ids = []
@@ -318,4 +319,5 @@ def test_add_file(self):
 
 
 if __name__ == '__main__':
+    app = QGuiApplication(sys.argv)
     unittest.main()

src/windows/main_window.py

@@ -2509,6 +2509,7 @@ def __init__(self, mode=None):
         self.TransformSignal.connect(self.transformTriggered)
         if not self.mode == "unittest":
             self.RecoverBackup.connect(self.recover_backup)
+        app.aboutToQuit.connect(self.close)
 
         # Initialize and start the thumbnail HTTP server
         self.http_server_thread = httpThumbnailServerThread()

src/windows/views/timeline_webview.py

@@ -3000,5 +3000,10 @@ def __init__(self, window):
         self.cache_renderer.setInterval(0.5 * 1000)
         self.cache_renderer.timeout.connect(self.render_cache_json)
 
+        # Connect shutdown signals
+        get_app().aboutToQuit.connect(self.redraw_audio_timer.stop)
+        get_app().aboutToQuit.connect(self.cache_renderer.stop)
+        get_app().aboutToQuit.connect(self.deleteLater)
+
         # Delay the start of cache rendering
         QTimer.singleShot(1500, self.cache_renderer.start)