Add line to indicate resize handle and focus of timeline.

Related to #593

src/mainwindow.cpp

@@ -226,6 +226,25 @@ void MainWindow::init()
     ctnLay->setSpacing(0);
     ctnLay->setContentsMargins(0, 0, 0, 0);
     m_timelineToolBarContainer->setLayout(ctnLay);
+    QFrame *topFrame = new QFrame(this);
+    topFrame->setFrameShape(QFrame::HLine);
+    topFrame->setFixedHeight(1);
+    topFrame->setLineWidth(1);
+    connect(this, &MainWindow::focusTimeline, [topFrame](bool focus, bool highlight) {
+        if (focus) {
+            KColorScheme scheme(QApplication::palette().currentColorGroup(), KColorScheme::Tooltip);
+            if (highlight) {
+                QColor col = scheme.decoration(KColorScheme::HoverColor).color();
+                topFrame->setStyleSheet(QString("QFrame {border: 1px solid rgba(%1,%2,%3,70)}").arg(col.red()).arg(col.green()).arg(col.blue()));
+            } else {
+                QColor col = scheme.decoration(KColorScheme::FocusColor).color();
+                topFrame->setStyleSheet(QString("QFrame {border: 1px solid rgba(%1,%2,%3,100)}").arg(col.red()).arg(col.green()).arg(col.blue()));
+            }
+        } else {
+            topFrame->setStyleSheet(QString());
+        }
+    });
+    ctnLay->addWidget(topFrame);
     ctnLay->addWidget(m_timelineToolBar);
     KSharedConfigPtr config = KSharedConfig::openConfig();
     KConfigGroup mainConfig(config, QStringLiteral("MainWindow"));

src/mainwindow.h

@@ -503,6 +503,7 @@ signals:
     void adjustAssetPanelRange(int itemId, int in, int out);
     /** @brief Enable or disable the undo stack. For example undo/redo should not be enabled when dragging a clip in timeline or we risk corruption. */
     void enableUndo(bool enable);
+    bool focusTimeline(bool focus, bool highlight);
 };
 
 #endif

src/monitor/monitor.cpp

@@ -556,7 +556,7 @@ void Monitor::setupMenu(QMenu *goMenu, QMenu *overlayMenu, QAction *playZone, QA
     // TODO: add save zone to timeline monitor when fixed
     m_contextMenu->addMenu(m_markerMenu);
     if (m_id == Kdenlive::ClipMonitor) {
-        m_contextMenu->addAction(QIcon::fromTheme(QStringLiteral("document-save")), i18n("Save zone"), this, SLOT(slotSaveZone()));
+        //m_contextMenu->addAction(QIcon::fromTheme(QStringLiteral("document-save")), i18n("Save zone"), this, SLOT(slotSaveZone()));
         QAction *extractZone =
             m_configMenu->addAction(QIcon::fromTheme(QStringLiteral("document-new")), i18n("Extract Zone"), this, SLOT(slotExtractCurrentZone()));
         m_contextMenu->addAction(extractZone);

src/timeline2/view/timelinewidget.cpp

@@ -71,6 +71,7 @@ TimelineWidget::TimelineWidget(QWidget *parent)
     setFocusPolicy(Qt::StrongFocus);
     m_favEffects = new QMenu(i18n("Insert an effect..."), this);
     m_favCompositions = new QMenu(i18n("Insert a composition..."), this);
+    installEventFilter(this);
 }
 
 TimelineWidget::~TimelineWidget()
@@ -400,3 +401,30 @@ void TimelineWidget::endDrag()
         QMetaObject::invokeMethod(rootObject(), "endBinDrag");
     }
 }
+
+
+bool TimelineWidget::eventFilter(QObject *object, QEvent *event)
+{
+    switch(event->type()) {
+        case QEvent::Enter:
+            if (!hasFocus()) {
+                pCore->window()->focusTimeline(true, true);
+            }
+            break;
+        case QEvent::Leave:
+            if (!hasFocus()) {
+                pCore->window()->focusTimeline(false, true);
+            }
+            break;
+        case QEvent::FocusOut:
+            pCore->window()->focusTimeline(false, false);
+            break;
+        case QEvent::FocusIn:
+            pCore->window()->focusTimeline(true, false);
+            break;
+        default:
+            break;
+    }
+
+    return QQuickWidget::eventFilter(object, event);
+}

src/timeline2/view/timelinewidget.h

@@ -58,6 +58,7 @@ public:
 
 protected:
     void mousePressEvent(QMouseEvent *event) override;
+    bool eventFilter(QObject *object, QEvent *event) override;
 
 public slots:
     void slotChangeZoom(int value, bool zoomOnMouse);