Undo/redo

src/gui/ClickSlider.h

@@ -13,6 +13,7 @@ protected:
     void mousePressEvent(QMouseEvent *event) override
     {
         if (event->button() == Qt::LeftButton) {
+            setProperty("pressValue", value());
             const int span = (orientation() == Qt::Horizontal) ? width() : height();
             const int pos = (orientation() == Qt::Horizontal)
                 ? static_cast<int>(event->position().x())

src/gui/GraphEditorWidget.cpp

@@ -16,7 +16,6 @@
 #include <QToolButton>
 #include <QTimer>
 #include <QUndoCommand>
-#include <QUndoStack>
 #include <QEvent>
 #include <QVBoxLayout>
 #include <QScrollArea>
@@ -49,10 +48,6 @@ public:
     {
         if (m_widget) {
             m_widget->applyVolumeState(m_nodeId, m_previous, true);
-            if (m_widget->m_volumeUndoStack) {
-                m_widget->m_undoVolumeAction->setEnabled(m_widget->m_volumeUndoStack->canUndo());
-                m_widget->m_redoVolumeAction->setEnabled(m_widget->m_volumeUndoStack->canRedo());
-            }
         }
     }
 
@@ -60,10 +55,6 @@ public:
     {
         if (m_widget) {
             m_widget->applyVolumeState(m_nodeId, m_next, true);
-            if (m_widget->m_volumeUndoStack) {
-                m_widget->m_undoVolumeAction->setEnabled(m_widget->m_volumeUndoStack->canUndo());
-                m_widget->m_redoVolumeAction->setEnabled(m_widget->m_volumeUndoStack->canRedo());
-            }
         }
     }
 
@@ -270,27 +261,6 @@ GraphEditorWidget::GraphEditorWidget(Potato::PipeWireController *controller, QWi
     });
     m_view->addAction(resetLayoutAction);
 
-    m_volumeUndoStack = new QUndoStack(this);
-    m_undoVolumeAction = new QAction(QString("Undo Volume"), m_view);
-    m_redoVolumeAction = new QAction(QString("Redo Volume"), m_view);
-    m_undoVolumeAction->setShortcut(QKeySequence::Undo);
-    m_redoVolumeAction->setShortcut(QKeySequence::Redo);
-    m_undoVolumeAction->setEnabled(false);
-    m_redoVolumeAction->setEnabled(false);
-    connect(m_undoVolumeAction, &QAction::triggered, m_volumeUndoStack, &QUndoStack::undo);
-    connect(m_redoVolumeAction, &QAction::triggered, m_volumeUndoStack, &QUndoStack::redo);
-    m_view->addAction(m_undoVolumeAction);
-    m_view->addAction(m_redoVolumeAction);
-    connect(m_volumeUndoStack, &QUndoStack::canUndoChanged, this, [this](bool canUndo) {
-        if (m_undoVolumeAction) {
-            m_undoVolumeAction->setEnabled(canUndo);
-        }
-    });
-    connect(m_volumeUndoStack, &QUndoStack::canRedoChanged, this, [this](bool canRedo) {
-        if (m_redoVolumeAction) {
-            m_redoVolumeAction->setEnabled(canRedo);
-        }
-    });
 
     auto *savePresetAction = new QAction(QString("Save Preset..."), m_view);
     connect(savePresetAction, &QAction::triggered, [this]() {
@@ -1081,18 +1051,12 @@ void GraphEditorWidget::applyVolumeState(uint32_t nodeId, const NodeVolumeState
 
 void GraphEditorWidget::pushVolumeCommand(uint32_t nodeId, const NodeVolumeState &previous, const NodeVolumeState &next)
 {
-    if (!m_volumeUndoStack || m_ignoreVolumeUndo) {
+    if (!m_scene || m_ignoreVolumeUndo) {
         return;
     }
     const bool changedVolume = qAbs(previous.volume - next.volume) > 0.0001f;
     if (!changedVolume && previous.mute == next.mute) {
         return;
     }
-    m_volumeUndoStack->push(new VolumeChangeCommand(this, nodeId, previous, next));
-    if (m_undoVolumeAction) {
-        m_undoVolumeAction->setEnabled(m_volumeUndoStack->canUndo());
-    }
-    if (m_redoVolumeAction) {
-        m_redoVolumeAction->setEnabled(m_volumeUndoStack->canRedo());
-    }
+    m_scene->undoStack().push(new VolumeChangeCommand(this, nodeId, previous, next));
 }

src/gui/GraphEditorWidget.h

@@ -23,9 +23,7 @@ class QToolButton;
 class QSplitter;
 class QTabWidget;
 class PresetManager;
-class QUndoStack;
 class VolumeChangeCommand;
-class QAction;
 
 class GraphEditorWidget : public QWidget
 {
@@ -109,8 +107,5 @@ private:
     qint64 m_meterProfileMax = 0;
     int m_meterProfileFrames = 0;
     PresetManager *m_presetManager = nullptr;
-    QUndoStack *m_volumeUndoStack = nullptr;
-    QAction *m_undoVolumeAction = nullptr;
-    QAction *m_redoVolumeAction = nullptr;
     bool m_ignoreVolumeUndo = false;
 };

src/gui/PipeWireGraphModel.cpp

@@ -157,14 +157,40 @@ QWidget *PipeWireGraphModel::nodeWidget(QtNodes::NodeId nodeId) const
             return;
         }
         const float volume = static_cast<float>(slider->value()) / 100.0f;
-        const NodeVolumeState state{volume, muteButton->isChecked()};
-        m_controller->setNodeVolume(pipewireId, volume, state.mute);
+        const NodeVolumeState next{volume, muteButton->isChecked()};
+        const NodeVolumeState previous = m_nodeVolumeState.value(pipewireId, next);
+        m_controller->setNodeVolume(pipewireId, volume, next.mute);
         auto *self = const_cast<PipeWireGraphModel*>(this);
-        self->setNodeVolumeState(pipewireId, state, true);
+        self->setNodeVolumeState(pipewireId, next, false);
+        if (!slider->isSliderDown() && !m_inlineStartState.contains(pipewireId)) {
+            self->emitNodeVolumeChanged(pipewireId, previous, next);
+        }
     };
 
     QObject::connect(slider, &QSlider::valueChanged, widget, [applyVolume](int) { applyVolume(); });
     QObject::connect(muteButton, &QToolButton::toggled, widget, [applyVolume](bool) { applyVolume(); });
+    QObject::connect(slider, &QSlider::sliderPressed, widget, [this, pipewireId, slider, muteButton]() {
+        if (pipewireId == 0) {
+            return;
+        }
+        bool ok = false;
+        const int pressValue = slider->property("pressValue").toInt(&ok);
+        const float volume = ok ? (static_cast<float>(pressValue) / 100.0f)
+                                : static_cast<float>(slider->value()) / 100.0f;
+        const bool mute = muteButton->isChecked();
+        m_inlineStartState.insert(pipewireId, NodeVolumeState{volume, mute});
+    });
+    QObject::connect(slider, &QSlider::sliderReleased, widget, [this, pipewireId, slider, muteButton]() {
+        if (pipewireId == 0) {
+            return;
+        }
+        const NodeVolumeState previous = m_inlineStartState.value(pipewireId, m_nodeVolumeState.value(pipewireId));
+        m_inlineStartState.remove(pipewireId);
+        const float volume = static_cast<float>(slider->value()) / 100.0f;
+        const NodeVolumeState next{volume, muteButton->isChecked()};
+        auto *self = const_cast<PipeWireGraphModel*>(this);
+        self->emitNodeVolumeChanged(pipewireId, previous, next);
+    });
 
     layout->addWidget(muteButton);
     layout->addWidget(slider);
@@ -811,6 +837,15 @@ void PipeWireGraphModel::applyVolumeStates(const QHash<QString, NodeVolumeState>
     }
 }
 
+void PipeWireGraphModel::emitNodeVolumeChanged(uint32_t nodeId, const NodeVolumeState &previous, const NodeVolumeState &current)
+{
+    const bool changedVolume = qAbs(previous.volume - current.volume) > 0.0001f;
+    if (!changedVolume && previous.mute == current.mute) {
+        return;
+    }
+    Q_EMIT nodeVolumeChanged(nodeId, previous, current);
+}
+
 void PipeWireGraphModel::setNodeVolumeState(uint32_t nodeId, const NodeVolumeState &state, bool notify)
 {
     const NodeVolumeState previous = m_nodeVolumeState.value(nodeId, NodeVolumeState{});

src/gui/PipeWireGraphModel.h

@@ -89,6 +89,7 @@ signals:
 
 private:
     QWidget *nodeWidget(QtNodes::NodeId nodeId) const;
+    void emitNodeVolumeChanged(uint32_t nodeId, const NodeVolumeState &previous, const NodeVolumeState &current);
     QtNodes::ConnectionId connectionFromPipeWire(const Potato::LinkInfo &link, bool *ok) const;
     bool findPortIndex(const Potato::NodeInfo &node, uint32_t portId, QtNodes::PortType type, QtNodes::PortIndex &index) const;
     QString portLabel(const Potato::PortInfo &port) const;
@@ -115,4 +116,5 @@ private:
     mutable std::unordered_map<QtNodes::NodeId, QWidget*> m_nodeWidgets;
     std::unordered_map<QtNodes::NodeId, QSize> m_nodeSizes;
     mutable QHash<uint32_t, NodeVolumeState> m_nodeVolumeState;
+    mutable QHash<uint32_t, NodeVolumeState> m_inlineStartState;
 };