Fix black lines

gui/GraphEditorWidget.cpp

@@ -39,6 +39,7 @@
 #include <QMessageBox>
 #include <QMimeData>
 #include <QPixmap>
+#include <QPointer>
 #include <QPushButton>
 #include <QScrollArea>
 #include <QSplitter>
@@ -614,9 +615,19 @@ GraphEditorWidget::GraphEditorWidget(warppipe::Client *client,
           &GraphEditorWidget::onRefreshTimer);
 
   if (m_client) {
-    m_client->SetChangeCallback([this] {
+    QPointer<QTimer> changeTimer = m_changeTimer;
-      QMetaObject::invokeMethod(m_changeTimer,
+    m_client->SetChangeCallback([changeTimer] {
-                                qOverload<>(&QTimer::start),
+      auto *app = QCoreApplication::instance();
+      if (!app) {
+        return;
+      }
+
+      QMetaObject::invokeMethod(app,
+                                [changeTimer]() {
+                                  if (changeTimer) {
+                                    changeTimer->start();
+                                  }
+                                },
                                 Qt::QueuedConnection);
     });
   }
@@ -636,6 +647,11 @@ GraphEditorWidget::GraphEditorWidget(warppipe::Client *client,
 void GraphEditorWidget::onRefreshTimer() {
   m_model->refreshFromClient();
 
+  if (m_scene &&
+      m_scene->itemIndexMethod() != QGraphicsScene::BspTreeIndex) {
+    m_scene->setItemIndexMethod(QGraphicsScene::BspTreeIndex);
+  }
+
   if (!m_graphReady && m_model->allNodeIds().size() > 0) {
     m_graphReady = true;
     Q_EMIT graphReady();
@@ -648,6 +664,13 @@ void GraphEditorWidget::scheduleSaveLayout() {
 }
 
 GraphEditorWidget::~GraphEditorWidget() {
+  if (m_scene) {
+    disconnect(m_scene, nullptr, this, nullptr);
+  }
+  if (m_model) {
+    disconnect(m_model, nullptr, this, nullptr);
+  }
+
   if (m_client) {
     m_client->SetChangeCallback(nullptr);
   }
@@ -670,6 +693,45 @@ int GraphEditorWidget::linkCount() const {
   return count / 2;
 }
 
+QAction *GraphEditorWidget::execMenuAction(QMenu &menu,
+                                           const QPoint &screenPos) {
+  return menu.exec(screenPos);
+}
+
+QString GraphEditorWidget::promptTextInput(const QString &title,
+                                           const QString &label,
+                                           bool *ok) {
+  return QInputDialog::getText(this,
+                               title,
+                               label,
+                               QLineEdit::Normal,
+                               QString(),
+                               ok);
+}
+
+QString GraphEditorWidget::chooseSaveFilePath(const QString &title,
+                                              const QString &initialDir,
+                                              const QString &filter) {
+  return QFileDialog::getSaveFileName(this,
+                                      title,
+                                      initialDir,
+                                      filter);
+}
+
+QString GraphEditorWidget::chooseOpenFilePath(const QString &title,
+                                              const QString &initialDir,
+                                              const QString &filter) {
+  return QFileDialog::getOpenFileName(this,
+                                      title,
+                                      initialDir,
+                                      filter);
+}
+
+void GraphEditorWidget::showWarningDialog(const QString &title,
+                                          const QString &message) {
+  QMessageBox::warning(this, title, message);
+}
+
 void GraphEditorWidget::setDebugScreenshotDir(const QString &dir) {
   m_debugScreenshotDir = dir;
   QDir d(dir);
@@ -812,7 +874,7 @@ void GraphEditorWidget::showCanvasContextMenu(const QPoint &screenPos,
   QAction *savePresetAction = menu.addAction(QStringLiteral("Save Preset..."));
   QAction *loadPresetAction = menu.addAction(QStringLiteral("Load Preset..."));
 
-  QAction *chosen = menu.exec(screenPos);
+  QAction *chosen = execMenuAction(menu, screenPos);
   if (chosen == createSink) {
     createVirtualNode(true, scenePos);
   } else if (chosen == createSource) {
@@ -904,7 +966,7 @@ void GraphEditorWidget::showNodeContextMenu(const QPoint &screenPos,
                                QStringLiteral(
                                    "application/warppipe-virtual-graph"))));
 
-  QAction *chosen = menu.exec(screenPos);
+  QAction *chosen = execMenuAction(menu, screenPos);
   if (!chosen) {
     return;
   }
@@ -931,9 +993,9 @@ void GraphEditorWidget::createVirtualNode(bool isSink,
                                           const QPointF &scenePos) {
   if (isSink) {
     bool ok = false;
-    QString name = QInputDialog::getText(
+    QString name = promptTextInput(QStringLiteral("Create Virtual Sink"),
-        this, QStringLiteral("Create Virtual Sink"),
+                                   QStringLiteral("Node name:"),
-        QStringLiteral("Node name:"), QLineEdit::Normal, QString(), &ok);
+                                   &ok);
     if (!ok || name.trimmed().isEmpty())
       return;
 
@@ -941,7 +1003,7 @@ void GraphEditorWidget::createVirtualNode(bool isSink,
     m_model->setPendingPosition(nodeName, scenePos);
     auto result = m_client->CreateVirtualSink(nodeName);
     if (!result.status.ok()) {
-      QMessageBox::warning(this, QStringLiteral("Error"),
+      showWarningDialog(QStringLiteral("Error"),
                         QString::fromStdString(result.status.message));
       return;
     }
@@ -1016,7 +1078,7 @@ void GraphEditorWidget::createVirtualNode(bool isSink,
 
   QString name = nameEdit->text().trimmed();
   if (name.isEmpty()) {
-    QMessageBox::warning(this, QStringLiteral("Error"),
+    showWarningDialog(QStringLiteral("Error"),
                       QStringLiteral("Name cannot be empty."));
     return;
   }
@@ -1032,7 +1094,7 @@ void GraphEditorWidget::createVirtualNode(bool isSink,
 
   auto result = m_client->CreateVirtualSource(nodeName, opts);
   if (!result.status.ok()) {
-    QMessageBox::warning(this, QStringLiteral("Error"),
+    showWarningDialog(QStringLiteral("Error"),
                       QString::fromStdString(result.status.message));
     return;
   }
@@ -1397,8 +1459,8 @@ void GraphEditorWidget::savePreset() {
   if (!dir.exists())
     dir.mkpath(".");
 
-  QString path = QFileDialog::getSaveFileName(
+  QString path = chooseSaveFilePath(QStringLiteral("Save Preset"),
-      this, QStringLiteral("Save Preset"), m_presetDir,
+                                    m_presetDir,
                                     QStringLiteral("JSON files (*.json)"));
   if (path.isEmpty())
     return;
@@ -1410,14 +1472,14 @@ void GraphEditorWidget::savePreset() {
       mw->statusBar()->showMessage(
           QStringLiteral("Preset saved: ") + QFileInfo(path).fileName(), 4000);
   } else {
-    QMessageBox::warning(this, QStringLiteral("Error"),
+    showWarningDialog(QStringLiteral("Error"),
                       QStringLiteral("Failed to save preset."));
   }
 }
 
 void GraphEditorWidget::loadPreset() {
-  QString path = QFileDialog::getOpenFileName(
+  QString path = chooseOpenFilePath(QStringLiteral("Load Preset"),
-      this, QStringLiteral("Load Preset"), m_presetDir,
+                                    m_presetDir,
                                     QStringLiteral("JSON files (*.json)"));
   if (path.isEmpty())
     return;
@@ -1427,7 +1489,7 @@ void GraphEditorWidget::loadPreset() {
       mw->statusBar()->showMessage(
           QStringLiteral("Preset loaded: ") + QFileInfo(path).fileName(), 4000);
   } else {
-    QMessageBox::warning(this, QStringLiteral("Error"),
+    showWarningDialog(QStringLiteral("Error"),
                       QStringLiteral("Failed to load preset."));
   }
 }

gui/GraphEditorWidget.h

@@ -27,6 +27,8 @@ class QSplitter;
 class QTabWidget;
 class QSlider;
 class QTimer;
+class QAction;
+class QMenu;
 class DeleteVirtualNodeCommand;
 
 enum class ConnectionStyleType : uint8_t {
@@ -59,6 +61,20 @@ private slots:
   void onContextMenuRequested(const QPoint &pos);
   void scheduleSaveLayout();
 
+protected:
+  virtual QAction *execMenuAction(QMenu &menu, const QPoint &screenPos);
+  virtual QString promptTextInput(const QString &title,
+                                  const QString &label,
+                                  bool *ok);
+  virtual QString chooseSaveFilePath(const QString &title,
+                                     const QString &initialDir,
+                                     const QString &filter);
+  virtual QString chooseOpenFilePath(const QString &title,
+                                     const QString &initialDir,
+                                     const QString &filter);
+  virtual void showWarningDialog(const QString &title,
+                                 const QString &message);
+
 private:
   void showCanvasContextMenu(const QPoint &screenPos, const QPointF &scenePos);
   void showNodeContextMenu(const QPoint &screenPos, uint32_t pwNodeId,

gui/WarpGraphModel.cpp

@@ -352,12 +352,11 @@ void WarpGraphModel::refreshFromClient() {
     return;
   }
 
-  Q_EMIT beginBatchUpdate();
   m_refreshing = true;
+  bool sceneChanged = false;
   auto nodesResult = m_client->ListNodes();
   if (!nodesResult.ok()) {
     m_refreshing = false;
-    Q_EMIT endBatchUpdate();
     return;
   }
 
@@ -512,6 +511,10 @@ void WarpGraphModel::refreshFromClient() {
       m_volumeStates[qtId] = {};
     }
 
+    if (!sceneChanged) {
+      sceneChanged = true;
+      Q_EMIT beginBatchUpdate();
+    }
     Q_EMIT nodeCreated(qtId);
   }
 
@@ -526,6 +529,10 @@ void WarpGraphModel::refreshFromClient() {
     if (it == m_pwToQt.end()) {
       continue;
     }
+    if (!sceneChanged) {
+      sceneChanged = true;
+      Q_EMIT beginBatchUpdate();
+    }
     QtNodes::NodeId qtId = it->second;
     auto nodeIt = m_nodes.find(qtId);
     if (nodeIt == m_nodes.end()) {
@@ -581,6 +588,10 @@ void WarpGraphModel::refreshFromClient() {
         QtNodes::ConnectionId connId{outNodeIt->second, outPortIdx,
                                      inNodeIt->second, inPortIdx};
         if (m_connections.find(connId) == m_connections.end()) {
+          if (!sceneChanged) {
+            sceneChanged = true;
+            Q_EMIT beginBatchUpdate();
+          }
           m_connections.insert(connId);
           m_linkIdToConn.emplace(link.id.value, connId);
           Q_EMIT connectionCreated(connId);
@@ -609,6 +620,10 @@ void WarpGraphModel::refreshFromClient() {
         {
           auto connIt = m_connections.find(connId);
           if (connIt != m_connections.end()) {
+            if (!sceneChanged) {
+              sceneChanged = true;
+              Q_EMIT beginBatchUpdate();
+            }
             m_connections.erase(connIt);
             Q_EMIT connectionDeleted(connId);
           }
@@ -696,8 +711,10 @@ void WarpGraphModel::refreshFromClient() {
   }
 
   m_refreshing = false;
+  if (sceneChanged) {
     Q_EMIT endBatchUpdate();
   }
+}
 
 const WarpNodeData *
 WarpGraphModel::warpNodeData(QtNodes::NodeId nodeId) const {

gui/ZoomGraphicsView.h

@@ -18,7 +18,7 @@ public:
   explicit ZoomGraphicsView(QtNodes::BasicGraphicsScene *scene,
                             QWidget *parent = nullptr)
       : QtNodes::GraphicsView(scene, parent) {
-    setViewportUpdateMode(QGraphicsView::SmartViewportUpdate);
+    setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
     setCacheMode(QGraphicsView::CacheNone);
   }
 

tests/warppipe_tests.cpp

@@ -626,6 +626,60 @@ TEST_CASE("set default sink without metadata returns unavailable") {
   REQUIRE_FALSE(status.ok());
 }
 
+TEST_CASE("set default source without metadata returns unavailable") {
+  auto result = warppipe::Client::Create(DefaultOptions());
+  if (!result.ok()) {
+    SUCCEED("PipeWire unavailable");
+    return;
+  }
+
+  auto status = result.value->SetDefaultSource("");
+  REQUIRE_FALSE(status.ok());
+}
+
+TEST_CASE("GetVirtualNodeInfo returns details for created virtual sink") {
+  auto result = warppipe::Client::Create(DefaultOptions());
+  if (!result.ok()) {
+    SUCCEED("PipeWire unavailable");
+    return;
+  }
+
+  warppipe::VirtualNodeOptions options;
+  options.display_name = "warppipe-test-info";
+  options.group = "warppipe-test";
+  options.format.rate = 48000;
+  options.format.channels = 2;
+
+  auto sink = result.value->CreateVirtualSink("warppipe-info-sink", options);
+  if (!sink.ok()) {
+    if (sink.status.code == warppipe::StatusCode::kUnavailable) {
+      SUCCEED("PipeWire unavailable");
+      return;
+    }
+    REQUIRE(sink.ok());
+  }
+
+  auto info = result.value->GetVirtualNodeInfo(sink.value.node);
+  REQUIRE(info.ok());
+  REQUIRE(info.value.node.value == sink.value.node.value);
+  REQUIRE(info.value.name == sink.value.name);
+  REQUIRE_FALSE(info.value.is_source);
+
+  REQUIRE(result.value->RemoveNode(sink.value.node).ok());
+}
+
+TEST_CASE("GetVirtualNodeInfo missing node returns not found") {
+  auto result = warppipe::Client::Create(DefaultOptions());
+  if (!result.ok()) {
+    SUCCEED("PipeWire unavailable");
+    return;
+  }
+
+  auto info = result.value->GetVirtualNodeInfo(warppipe::NodeId{999999});
+  REQUIRE_FALSE(info.ok());
+  REQUIRE(info.status.code == warppipe::StatusCode::kNotFound);
+}
+
 TEST_CASE("NodeInfo captures application properties") {
   auto result = warppipe::Client::Create(DefaultOptions());
   if (!result.ok()) {