Mixer

src/gui/PipeWireGraphModel.cpp

@@ -830,6 +830,45 @@ void PipeWireGraphModel::applyVolumeStates(const QHash<QString, NodeVolumeState>
     }
 }
 
+void PipeWireGraphModel::setNodeVolumeState(uint32_t nodeId, const NodeVolumeState &state)
+{
+    m_nodeVolumeState.insert(nodeId, state);
+
+    auto nodeIt = m_pwToNode.find(nodeId);
+    if (nodeIt == m_pwToNode.end()) {
+        return;
+    }
+    auto widgetIt = m_nodeWidgets.find(nodeIt->second);
+    if (widgetIt == m_nodeWidgets.end()) {
+        return;
+    }
+
+    QWidget *widget = widgetIt->second;
+    if (!widget) {
+        return;
+    }
+
+    if (auto *slider = widget->findChild<QSlider*>()) {
+        slider->blockSignals(true);
+        slider->setValue(static_cast<int>(state.volume * 100.0f));
+        slider->blockSignals(false);
+    }
+    if (auto *button = widget->findChild<QToolButton*>()) {
+        button->blockSignals(true);
+        button->setChecked(state.mute);
+        button->blockSignals(false);
+    }
+}
+
+bool PipeWireGraphModel::nodeVolumeState(uint32_t nodeId, NodeVolumeState &state) const
+{
+    if (!m_nodeVolumeState.contains(nodeId)) {
+        return false;
+    }
+    state = m_nodeVolumeState.value(nodeId);
+    return true;
+}
+
 void PipeWireGraphModel::saveLayout() const
 {
     const QString path = layoutFilePath();