From 9becb4c11ff15d32230e7c18cbd9202cc286a36a Mon Sep 17 00:00:00 2001
From: nwwt <andreas.reis@gmail.com>
Date: Tue, 7 Dec 2021 23:08:56 +0100
Subject: [PATCH] Allow <audio> to play without user interaction in accordance
 to autoplay setting v2 (#1539)

Adds back setting Chromium's autoplay policy according to Anki's, this time without globals.
---
 qt/aqt/browser/previewer.py | 2 ++
 qt/aqt/clayout.py           | 2 ++
 qt/aqt/reviewer.py          | 2 ++
 qt/aqt/webview.py           | 5 +++++
 4 files changed, 11 insertions(+)

diff --git a/qt/aqt/browser/previewer.py b/qt/aqt/browser/previewer.py
index dcb91a122..9abbaf35a 100644
--- a/qt/aqt/browser/previewer.py
+++ b/qt/aqt/browser/previewer.py
@@ -203,6 +203,7 @@ class Previewer(QDialog):
             bodyclass = theme_manager.body_classes_for_card_ord(c.ord)
 
             if c.autoplay():
+                self._web.setPlaybackRequiresGesture(False)
                 if self._show_both_sides:
                     # if we're showing both sides at once, remove any audio
                     # from the answer that's appeared on the question already
@@ -217,6 +218,7 @@ class Previewer(QDialog):
                     audio = c.answer_av_tags()
                 av_player.play_tags(audio)
             else:
+                self._web.setPlaybackRequiresGesture(True)
                 av_player.clear_queue_and_maybe_interrupt()
 
             txt = self.mw.prepare_card_text_for_display(txt)
diff --git a/qt/aqt/clayout.py b/qt/aqt/clayout.py
index e92d05a87..ac08c4236 100644
--- a/qt/aqt/clayout.py
+++ b/qt/aqt/clayout.py
@@ -525,12 +525,14 @@ class CardLayout(QDialog):
             self.have_autoplayed = True
 
             if c.autoplay():
+                self.preview_web.setPlaybackRequiresGesture(False)
                 if self.pform.preview_front.isChecked():
                     audio = c.question_av_tags()
                 else:
                     audio = c.answer_av_tags()
                 av_player.play_tags(audio)
             else:
+                self.preview_web.setPlaybackRequiresGesture(True)
                 av_player.clear_queue_and_maybe_interrupt()
 
         self.updateCardNames()
diff --git a/qt/aqt/reviewer.py b/qt/aqt/reviewer.py
index f6d3de636..057973047 100644
--- a/qt/aqt/reviewer.py
+++ b/qt/aqt/reviewer.py
@@ -320,10 +320,12 @@ class Reviewer:
         q = c.question()
         # play audio?
         if c.autoplay():
+            self.web.setPlaybackRequiresGesture(False)
             sounds = c.question_av_tags()
             gui_hooks.reviewer_will_play_question_sounds(c, sounds)
             av_player.play_tags(sounds)
         else:
+            self.web.setPlaybackRequiresGesture(True)
             av_player.clear_queue_and_maybe_interrupt()
             sounds = []
             gui_hooks.reviewer_will_play_question_sounds(c, sounds)
diff --git a/qt/aqt/webview.py b/qt/aqt/webview.py
index fa2e3eccc..1c96112d8 100644
--- a/qt/aqt/webview.py
+++ b/qt/aqt/webview.py
@@ -369,6 +369,11 @@ class AnkiWebView(QWebEngineView):
             return factor
         return 1
 
+    def setPlaybackRequiresGesture(self, value: bool) -> None:
+        self.settings().setAttribute(
+            QWebEngineSettings.WebAttribute.PlaybackRequiresUserGesture, value
+        )
+
     def _getQtIntScale(self, screen: QWidget) -> int:
         # try to detect if Qt has scaled the screen
         # - qt will round the scale factor to a whole number, so a dpi of 125% = 1x,