Notify caller when desktop stream controls close

tools/chatgui/src/stream_publish_window.cpp

@@ -17,6 +17,8 @@
 #include <QSignalBlocker>
 #include <QJsonDocument>
 #include <QScopedValueRollback>
+#include <QCloseEvent>
+#include <QShortcut>
 #ifdef HAVE_STREAM_CAPTURE
 #include <QVideoWidget>
 #include <QVideoSink>
@@ -37,6 +39,8 @@ StreamPublishWindow::StreamPublishWindow(StreamPublishEngine* engine, uint64_t g
         else m_settings = document.object();
     }
     setWindowTitle(text("Broadcast stream")); resize(720, 720); setMinimumSize(460, 480);
+    auto* escape = new QShortcut(QKeySequence(Qt::Key_Escape), this); escape->setContext(Qt::WidgetWithChildrenShortcut);
+    connect(escape, &QShortcut::activated, this, &QWidget::close);
     auto* layout = new QVBoxLayout(this);
 #ifdef HAVE_STREAM_CAPTURE
     auto* preview = new QVideoWidget(this); m_preview = preview;
@@ -166,6 +170,15 @@ StreamPublishWindow::StreamPublishWindow(StreamPublishEngine* engine, uint64_t g
     refreshSources(); refreshCodecs(); restoreSettings(); synchronize();
 }
 
+void StreamPublishWindow::closeEvent(QCloseEvent* event) {
+    QWidget::closeEvent(event);
+    if (event->isAccepted()) {
+        DEBUG_INFO(DEBUG_CATEGORY_STREAM, "desktop publisher controls closed group=%llx active=%d",
+            (unsigned long long)m_group, m_engine->active());
+        emit closed();
+    }
+}
+
 /* В БД храним пользовательский выбор, а не runtime handles источника и рассчитанный auto-битрейт. */
 void StreamPublishWindow::restoreSettings() {
     if (m_settings.isEmpty() || m_engine->active()) return;

tools/chatgui/src/stream_publish_window.h

@@ -9,12 +9,16 @@ class QPushButton;
 class QCheckBox;
 class QButtonGroup;
 class QSpinBox;
+class QCloseEvent;
 class StreamPublishWindow : public QWidget {
     Q_OBJECT
 public:
     StreamPublishWindow(StreamPublishEngine* engine, uint64_t group, QWidget* parent = nullptr, const QString& settings = {});
 signals:
     void settingsChanged(const QString& settings);
+    void closed(); // Возвращает фокус окну, из которого открыто управление; публикация продолжает работать.
+protected:
+    void closeEvent(QCloseEvent* event) override;
 private:
     StreamPublishEngine* m_engine;
     uint64_t m_group;