Add support for checking if audio is played in a page.

Add support for checking if audio is played in a page, as well
as the ability to (un)mute the audio.

Modify demobrowser example to show (muted) in the tab title, if
the tab is muted, or (audible) if there is audio playing in the tab.
Fix HTML5 audio/video (un)mute to also work.

Change-Id: I7213645e67be2f9da1c5f96cdf6c7eef5341ae4b
Task-number: QTBUG-48788
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com>

1 files changed, 35 insertions, 1 deletions

diff --git a/src/webenginewidgets/api/qwebenginepage.cpp b/src/webenginewidgets/api/qwebenginepage.cpp
index ee5702309..ec98a8346 100644
--- a/src/webenginewidgets/api/qwebenginepage.cpp
+++ b/src/webenginewidgets/api/qwebenginepage.cpp
@@ -146,6 +146,12 @@ void QWebEnginePagePrivate::selectionChanged()
     Q_EMIT q->selectionChanged();
 }
 
+void QWebEnginePagePrivate::wasRecentlyAudibleChanged(bool wasRecentlyAudible)
+{
+    Q_Q(QWebEnginePage);
+    Q_EMIT q->wasRecentlyAudibleChanged(wasRecentlyAudible);
+}
+
 QRectF QWebEnginePagePrivate::viewportRect() const
 {
     return view ? view->rect() : QRectF();
@@ -570,6 +576,33 @@ void QWebEnginePage::setBackgroundColor(const QColor &color)
     d->adapter->backgroundColorChanged();
 }
 
+/*!
+    \property QWebEnginePage::audioMuted
+    \brief the state of whether the current page audio is muted.
+    \since 5.7
+
+    The default value is false.
+*/
+bool QWebEnginePage::isAudioMuted() const {
+    const Q_D(QWebEnginePage);
+    return d->adapter->isAudioMuted();
+}
+
+void QWebEnginePage::setAudioMuted(bool muted) {
+    Q_D(QWebEnginePage);
+    bool _isAudioMuted = isAudioMuted();
+    d->adapter->setAudioMuted(muted);
+    if (_isAudioMuted != muted) {
+        Q_EMIT audioMutedChanged(muted);
+    }
+}
+
+bool QWebEnginePage::wasRecentlyAudible()
+{
+    Q_D(QWebEnginePage);
+    return d->adapter->wasRecentlyAudible();
+}
+
 void QWebEnginePage::setView(QWidget *view)
 {
     QWebEngineViewPrivate::bind(qobject_cast<QWebEngineView*>(view), this);
@@ -873,7 +906,8 @@ void QWebEnginePage::triggerAction(WebAction action, bool)
         break;
     case ToggleMediaMute:
         if (d->m_menuData.mediaUrl.isValid() && d->m_menuData.mediaFlags & WebEngineContextMenuData::MediaHasAudio) {
-            bool enable = (d->m_menuData.mediaFlags & WebEngineContextMenuData::MediaMuted);
+            // Make sure to negate the value, so that toggling actually works.
+            bool enable = !(d->m_menuData.mediaFlags & WebEngineContextMenuData::MediaMuted);
             d->adapter->executeMediaPlayerActionAt(d->m_menuData.pos, WebContentsAdapter::MediaPlayerMute, enable);
         }
         break;