Search feature for layer list

To enable the search feature just type into the layer list.

This change set also contains some more fixes:
 * Tab/Backtab now is functional also before the
   Display menu has been used the first time
 * Arrow keys work from the cell list again

src/laybasic/layCellTreeModel.cc

@@ -756,21 +756,6 @@ CellTreeModel::search_children (const tl::GlobPattern &pattern, CellTreeItem *it
   }
 }
 
-void
-CellTreeModel::search_children (const char *name, CellTreeItem *item)
-{
-  int children = item->children ();
-  for (int i = 0; i < children; ++i) {
-    CellTreeItem *c = item->child (i);
-    if (c) {
-      if (c->name_equals (name)) {
-        m_selected_indexes.push_back (model_index (c));
-      }
-      search_children (name, c);
-    }
-  }
-}
-
 QModelIndex 
 CellTreeModel::locate (const char *name, bool glob_pattern, bool case_sensitive, bool top_only)
 {

src/laybasic/layCellTreeModel.h

@@ -238,7 +238,6 @@ private:
   void build_top_level ();
   void clear_top_level ();
   void search_children (const tl::GlobPattern &pattern, CellTreeItem *item);
-  void search_children (const char *name, CellTreeItem *item);
 };
 
 /**

src/laybasic/layHierarchyControlPanel.cc

@@ -69,13 +69,9 @@ public:
 // --------------------------------------------------------------------
 //  HCPCellTreeWidget implementation
 
-HCPCellTreeWidget::HCPCellTreeWidget (QWidget *parent, const char *name)
-  : QTreeView (parent)
+HCPCellTreeWidget::HCPCellTreeWidget (QWidget *parent, const char *name, QWidget *key_event_receiver)
+  : QTreeView (parent), mp_key_event_receiver (key_event_receiver)
 {
-  //  Don't request focus: this leaves focus on the canvas and the arrow keys functional there
-  // @@@ setFocusPolicy (Qt::NoFocus); -> solve differently!!!
-  setFocusPolicy (Qt::ClickFocus);
-
   //  Allow dragging from here to 
   setDragDropMode (QAbstractItemView::DragOnly);
 
@@ -97,12 +93,24 @@ HCPCellTreeWidget::event (QEvent *event)
   return QTreeView::event (event);
 }
 
+bool
+HCPCellTreeWidget::focusNextPrevChild (bool /*next*/)
+{
+  return false;
+}
+
 void
 HCPCellTreeWidget::keyPressEvent (QKeyEvent *event)
 {
   QString t = event->text ();
-  if (!t.isEmpty ()) {
+  if (!t.isEmpty () && t[0].isPrint ()) {
     emit search_triggered (t);
+  } else if (mp_key_event_receiver) {
+    //  send other key events to the alternative receiver - this way we can make the
+    //  view receive arrow keys for panning.
+    QCoreApplication::sendEvent (mp_key_event_receiver, event);
+  } else {
+    return QTreeView::keyPressEvent (event);
   }
 }
 
@@ -885,7 +893,7 @@ HierarchyControlPanel::do_update_content (int cv_index)
     header->setVisible (split_mode);
     cl_ly->addWidget (header);
 
-    HCPCellTreeWidget *cell_list = new HCPCellTreeWidget (cl_frame, "tree");
+    HCPCellTreeWidget *cell_list = new HCPCellTreeWidget (cl_frame, "tree", mp_view->view_object_widget ());
     cl_ly->addWidget (cell_list);
     cell_list->setStyle (mp_tree_style.get ());
     cell_list->setModel (new CellTreeModel (cell_list, mp_view, cv_index, m_flat ? CellTreeModel::Flat : 0, 0, m_sorting));

src/laybasic/layHierarchyControlPanel.h

@@ -65,7 +65,7 @@ class HCPCellTreeWidget
 Q_OBJECT
 
 public:
-  HCPCellTreeWidget (QWidget *parent, const char *name);
+  HCPCellTreeWidget (QWidget *parent, const char *name, QWidget *key_event_receiver);
 
 signals:
   void cell_clicked (const QModelIndex &);
@@ -78,8 +78,11 @@ protected:
   virtual void mousePressEvent (QMouseEvent *event);
   virtual void mouseReleaseEvent (QMouseEvent *event);
   virtual void startDrag (Qt::DropActions supportedActions);
+  virtual bool focusNextPrevChild (bool next);
   virtual void keyPressEvent (QKeyEvent *event);
   virtual bool event (QEvent *event);
+
+  QWidget *mp_key_event_receiver;
 };
 
 /**
@@ -255,6 +258,14 @@ public:
     return m_split_mode;
   }
 
+  /**
+   *  @brief Gets the layout view this panel is attached to
+   */
+  lay::LayoutView *view ()
+  {
+    return mp_view;
+  }
+
 signals:
   void cell_selected (cell_path_type path, int cellview_index); 
   void active_cellview_changed (int cellview_index);

src/laybasic/layLayerControlPanel.cc

@@ -97,9 +97,6 @@ private:
 LCPTreeWidget::LCPTreeWidget (QWidget *parent, lay::LayerTreeModel *model, const char *name)
   : QTreeView (parent), mp_model (model)
 {
-  //  Don't request focus: this leaves focus on the canvas and the arrow keys functional there
-  setFocusPolicy (Qt::NoFocus);
-
   setObjectName (QString::fromUtf8 (name));
   setModel (model);
   setItemDelegate (new LCPItemDelegate (this));
@@ -149,7 +146,38 @@ LCPTreeWidget::mouseDoubleClickEvent (QMouseEvent *event)
   }
 }
 
-void 
+bool
+LCPTreeWidget::focusNextPrevChild (bool /*next*/)
+{
+  return false;
+}
+
+bool
+LCPTreeWidget::event (QEvent *event)
+{
+  //  Handling this event makes the widget receive all keystrokes
+  if (event->type () == QEvent::ShortcutOverride) {
+    QKeyEvent *ke = static_cast<QKeyEvent *> (event);
+    QString t = ke->text ();
+    if (!t.isEmpty () && t[0].isPrint ()) {
+      ke->accept ();
+    }
+  }
+  return QTreeView::event (event);
+}
+
+void
+LCPTreeWidget::keyPressEvent (QKeyEvent *event)
+{
+  QString t = event->text ();
+  if (!t.isEmpty () && t[0].isPrint ()) {
+    emit search_triggered (t);
+  } else {
+    QTreeView::keyPressEvent (event);
+  }
+}
+
+void
 LCPTreeWidget::collapse_all ()
 {
 #if QT_VERSION >= 0x040200
@@ -299,6 +327,70 @@ LayerControlPanel::LayerControlPanel (lay::LayoutView *view, db::Manager *manage
   l->setMargin (0);
   l->setSpacing (0);
 
+  mp_search_frame = new QFrame (this);
+  l->addWidget (mp_search_frame);
+  mp_search_frame->hide ();
+  mp_search_frame->setAutoFillBackground (true);
+  mp_search_frame->setObjectName (QString::fromUtf8 ("panel"));
+  mp_search_frame->setFrameStyle (QFrame::Panel | QFrame::Raised);
+  mp_search_frame->setLineWidth (1);
+  mp_search_frame->setBackgroundRole (QPalette::Highlight);
+
+  QHBoxLayout *sf_ly = new QHBoxLayout (mp_search_frame);
+  sf_ly->setMargin (0);
+  sf_ly->setContentsMargins (0, 0, 0, 0);
+  sf_ly->setSpacing (0);
+
+  mp_search_close_cb = new QCheckBox (mp_search_frame);
+  sf_ly->addWidget (mp_search_close_cb);
+
+  mp_search_close_cb->setFocusPolicy (Qt::NoFocus);
+  mp_search_close_cb->setBackgroundRole (QPalette::Highlight);
+  mp_search_close_cb->setSizePolicy (QSizePolicy (QSizePolicy::Fixed, QSizePolicy::Preferred));
+  QPalette pl (mp_search_close_cb->palette ());
+  pl.setColor (QPalette::Foreground, pl.color (QPalette::Active, QPalette::HighlightedText));
+  mp_search_close_cb->setPalette (pl);
+  mp_search_close_cb->setMaximumSize (QSize (mp_search_close_cb->maximumSize ().width (), mp_search_close_cb->sizeHint ().height () - 4));
+  connect (mp_search_close_cb, SIGNAL (clicked ()), this, SLOT (search_editing_finished ()));
+
+  mp_search_edit_box = new lay::DecoratedLineEdit (mp_search_frame);
+  mp_search_edit_box->setObjectName (QString::fromUtf8 ("cellview_search_edit_box"));
+  mp_search_edit_box->set_escape_signal_enabled (true);
+  mp_search_edit_box->set_tab_signal_enabled (true);
+  connect (mp_search_edit_box, SIGNAL (returnPressed ()), this, SLOT (search_editing_finished ()));
+  connect (mp_search_edit_box, SIGNAL (textEdited (const QString &)), this, SLOT (search_edited ()));
+  connect (mp_search_edit_box, SIGNAL (esc_pressed ()), this, SLOT (search_editing_finished ()));
+  connect (mp_search_edit_box, SIGNAL (tab_pressed ()), this, SLOT (search_next ()));
+  connect (mp_search_edit_box, SIGNAL (backtab_pressed ()), this, SLOT (search_prev ()));
+  sf_ly->addWidget (mp_search_edit_box);
+
+  mp_use_regular_expressions = new QAction (this);
+  mp_use_regular_expressions->setCheckable (true);
+  mp_use_regular_expressions->setChecked (true);
+  mp_use_regular_expressions->setText (tr ("Use expressions (use * and ? for any character)"));
+
+  mp_case_sensitive = new QAction (this);
+  mp_case_sensitive->setCheckable (true);
+  mp_case_sensitive->setChecked (true);
+  mp_case_sensitive->setText (tr ("Case sensitive search"));
+
+  QMenu *m = new QMenu (mp_search_edit_box);
+  m->addAction (mp_use_regular_expressions);
+  m->addAction (mp_case_sensitive);
+  connect (mp_use_regular_expressions, SIGNAL (triggered ()), this, SLOT (search_edited ()));
+  connect (mp_case_sensitive, SIGNAL (triggered ()), this, SLOT (search_edited ()));
+
+  mp_search_edit_box->set_clear_button_enabled (true);
+  mp_search_edit_box->set_options_button_enabled (true);
+  mp_search_edit_box->set_options_menu (m);
+
+  QToolButton *sf_next = new QToolButton (mp_search_frame);
+  sf_next->setAutoRaise (true);
+  sf_next->setToolTip (tr ("Find next"));
+  sf_next->setIcon (QIcon (QString::fromUtf8 (":/find.png")));
+  connect (sf_next, SIGNAL (clicked ()), this, SLOT (search_next ()));
+  sf_ly->addWidget (sf_next);
+
   mp_tab_bar = new QTabBar (this);
   mp_tab_bar->setObjectName (QString::fromUtf8 ("lcp_tabs"));
   connect (mp_tab_bar, SIGNAL (currentChanged (int)), this, SLOT (tab_selected (int)));
@@ -321,6 +413,7 @@ LayerControlPanel::LayerControlPanel (lay::LayoutView *view, db::Manager *manage
   connect (mp_layer_list, SIGNAL (double_clicked (const QModelIndex &, Qt::KeyboardModifiers)), this, SLOT (double_clicked (const QModelIndex &, Qt::KeyboardModifiers)));
   connect (mp_layer_list, SIGNAL (collapsed (const QModelIndex &)), this, SLOT (group_collapsed (const QModelIndex &)));
   connect (mp_layer_list, SIGNAL (expanded (const QModelIndex &)), this, SLOT (group_expanded (const QModelIndex &)));
+  connect (mp_layer_list, SIGNAL (search_triggered (const QString &)), this, SLOT (search_triggered (const QString &)));
   mp_layer_list->setContextMenuPolicy (Qt::CustomContextMenu);
   connect (mp_layer_list, SIGNAL(customContextMenuRequested (const QPoint &)), this, SLOT (context_menu (const QPoint &)));
   mp_layer_list->header ()->hide ();
@@ -1130,6 +1223,77 @@ LayerControlPanel::clear_selection ()
   set_selection (empty_sel);
 }
 
+void
+LayerControlPanel::search_triggered (const QString &t)
+{
+  if (mp_model) {
+    mp_search_close_cb->setChecked (true);
+    mp_search_frame->show ();
+    mp_search_edit_box->setText (t);
+    mp_search_edit_box->setFocus ();
+    search_edited ();
+  }
+}
+
+void
+LayerControlPanel::search_edited ()
+{
+  if (! mp_model) {
+    return;
+  }
+
+  QString t = mp_search_edit_box->text ();
+  if (t.isEmpty ()) {
+    mp_model->clear_locate ();
+    mp_layer_list->setCurrentIndex (QModelIndex ());
+  } else {
+    QModelIndex found = mp_model->locate (t.toUtf8 ().constData (), mp_use_regular_expressions->isChecked (), mp_case_sensitive->isChecked (), false);
+    mp_layer_list->setCurrentIndex (found);
+    if (found.isValid ()) {
+      mp_layer_list->scrollTo (found);
+    }
+  }
+}
+
+void
+LayerControlPanel::search_next ()
+{
+  if (! mp_model) {
+    return;
+  }
+
+  QModelIndex found = mp_model->locate_next ();
+  if (found.isValid ()) {
+    mp_layer_list->setCurrentIndex (found);
+    mp_layer_list->scrollTo (found);
+  }
+}
+
+void
+LayerControlPanel::search_prev ()
+{
+  if (! mp_model) {
+    return;
+  }
+
+  QModelIndex found = mp_model->locate_prev ();
+  if (found.isValid ()) {
+    mp_layer_list->setCurrentIndex (found);
+    mp_layer_list->scrollTo (found);
+  }
+}
+
+void
+LayerControlPanel::search_editing_finished ()
+{
+  if (! mp_model) {
+    return;
+  }
+
+  mp_model->clear_locate ();
+  mp_search_frame->hide ();
+}
+
 void
 LayerControlPanel::cm_regroup_flatten ()
 {
@@ -1727,6 +1891,10 @@ set_hidden_flags_rec (LayerTreeModel *model, QTreeView *tree_view, const QModelI
 void
 LayerControlPanel::do_update_content ()
 {
+  //  clear search. TODO: update search instead of clearing
+  mp_search_edit_box->clear ();
+  mp_model->clear_locate();
+
   mp_model->set_phase (m_phase);
 
   if (m_tabs_need_update) {

src/laybasic/layLayerControlPanel.h

@@ -44,6 +44,7 @@
 #include "layDitherPattern.h"
 #include "layLayerProperties.h"
 #include "layLayerTreeModel.h"
+#include "layWidgets.h"
 #include "dbObject.h"
 #include "tlDeferredExecution.h"
 
@@ -52,6 +53,7 @@ class QModelIndex;
 class QMenu;
 class QLabel;
 class QTabBar;
+class QCheckBox;
 
 namespace lay 
 {
@@ -85,6 +87,12 @@ public:
 
 signals:
   void double_clicked (const QModelIndex &, Qt::KeyboardModifiers);
+  void search_triggered (const QString &t);
+
+protected:
+  virtual void keyPressEvent (QKeyEvent *event);
+  virtual bool event (QEvent *event);
+  virtual bool focusNextPrevChild (bool next);
 
 private:
   lay::LayerTreeModel *mp_model;
@@ -322,6 +330,11 @@ public slots:
   void upup_clicked ();
   void down_clicked ();
   void downdown_clicked ();
+  void search_triggered (const QString &t);
+  void search_edited ();
+  void search_editing_finished ();
+  void search_next ();
+  void search_prev ();
 
 private:
   QTabBar *mp_tab_bar;
@@ -341,6 +354,11 @@ private:
   std::set<unsigned int> m_expanded;
   bool m_no_stipples;
   QLabel *m_no_stipples_label;
+  lay::DecoratedLineEdit *mp_search_edit_box;
+  QAction *mp_case_sensitive;
+  QAction *mp_use_regular_expressions;
+  QFrame *mp_search_frame;
+  QCheckBox *mp_search_close_cb;
 
   void clear_selection ();
 

src/laybasic/layLayerTreeModel.cc

@@ -27,6 +27,7 @@
 #include "dbLayoutUtils.h"
 #include "tlLog.h"
 #include "tlTimer.h"
+#include "tlGlobPattern.h"
 
 #include <QTreeView>
 #include <QModelIndex>
@@ -278,6 +279,92 @@ LayerTreeModel::index (int row, int column, const QModelIndex &parent) const
   }
 }
 
+void
+LayerTreeModel::clear_locate ()
+{
+  m_selected_indexes.clear ();
+  m_current_index = m_selected_indexes.begin ();
+  m_selected_ids.clear ();
+
+  signal_data_changed ();
+}
+
+QModelIndex
+LayerTreeModel::locate_next ()
+{
+  if (m_current_index == m_selected_indexes.end ()) {
+    return QModelIndex ();
+  } else {
+    ++m_current_index;
+    if (m_current_index == m_selected_indexes.end ()) {
+      m_current_index = m_selected_indexes.begin ();
+    }
+    return *m_current_index;
+  }
+}
+
+QModelIndex
+LayerTreeModel::locate_prev ()
+{
+  if (m_current_index == m_selected_indexes.end ()) {
+    return QModelIndex ();
+  } else {
+    if (m_current_index == m_selected_indexes.begin ()) {
+      m_current_index = m_selected_indexes.end ();
+    }
+    --m_current_index;
+    return *m_current_index;
+  }
+}
+
+void
+LayerTreeModel::search_children (const tl::GlobPattern &pattern, const QModelIndex &parent, bool recurse)
+{
+  int children = rowCount (parent);
+  for (int i = 0; i < children; ++i) {
+
+    QModelIndex child = index (i, 0, parent);
+
+    lay::LayerPropertiesConstIterator iter (iterator (child));
+    if (!iter.is_null () && !iter.at_end () &&
+        pattern.match (iter->display_string (mp_view, true /*real*/))) {
+      m_selected_indexes.push_back (child);
+    }
+
+    if (recurse && iter->has_children ()) {
+      search_children (pattern, child, recurse);
+    }
+
+  }
+}
+
+QModelIndex
+LayerTreeModel::locate (const char *name, bool glob_pattern, bool case_sensitive, bool top_only)
+{
+  m_selected_indexes.clear ();
+
+  tl::GlobPattern p = tl::GlobPattern (std::string (name));
+  p.set_case_sensitive (case_sensitive);
+  p.set_exact (!glob_pattern);
+  p.set_header_match (true);
+
+  search_children (p, QModelIndex (), !top_only);
+
+  m_selected_ids.clear ();
+  for (std::vector<QModelIndex>::const_iterator i = m_selected_indexes.begin (); i != m_selected_indexes.end (); ++i) {
+    m_selected_ids.insert (size_t (i->internalPointer ()));
+  }
+
+  signal_data_changed ();
+
+  m_current_index = m_selected_indexes.begin ();
+  if (m_current_index == m_selected_indexes.end ()) {
+    return QModelIndex ();
+  } else {
+    return *m_current_index;
+  }
+}
+
 void 
 LayerTreeModel::signal_data_changed () 
 {
@@ -648,6 +735,18 @@ LayerTreeModel::data (const QModelIndex &index, int role) const
 
       }
 
+    } else if (role == Qt::BackgroundRole) {
+
+      if (m_selected_ids.find (size_t (index.internalPointer ())) != m_selected_ids.end ()) {
+        //  for selected items pick a color between Highlight and Base
+        QPalette pl (mp_view->palette ());
+        QColor c1 = pl.color (QPalette::Highlight);
+        QColor cb = pl.color (QPalette::Base);
+        return QVariant (QColor ((c1.red () + cb.red ()) / 2, (c1.green () + cb.green ()) / 2, (c1.blue () + cb.blue ()) / 2));
+      } else {
+        return QVariant ();
+      }
+
     } else if (role == Qt::TextColorRole || role == Qt::FontRole) {
 
       if (index.column () == 1) {

src/laybasic/layLayerTreeModel.h

@@ -38,6 +38,11 @@ namespace db
   class Layout;
 }
 
+namespace tl
+{
+  class GlobPattern;
+}
+
 namespace lay
 {
 
@@ -161,6 +166,29 @@ public:
    */
   void signal_data_changed ();
 
+  /**
+   *  @brief Locate an index by name (at least closest)
+   *
+   *  If top_only is set, only top-level items are searched. An invalid model index is returned if
+   *  no corresponding item could be found.
+   */
+  QModelIndex locate (const char *name, bool glob_pattern = false, bool case_sensitive = true, bool top_only = true);
+
+  /**
+   *  @brief Locate the next index (after the first locate)
+   */
+  QModelIndex locate_next ();
+
+  /**
+   *  @brief Locate the previous index (after the first locate)
+   */
+  QModelIndex locate_prev ();
+
+  /**
+   *  @brief Clears the locate flags
+   */
+  void clear_locate ();
+
   /**
    *  @brief Set the test_shapes_in_view flag
    *
@@ -194,6 +222,11 @@ private:
   QFont m_font;
   QColor m_text_color, m_background_color;
   mutable EmptyWithinViewCache m_test_shapes_cache;
+  std::set <size_t> m_selected_ids;
+  std::vector <QModelIndex> m_selected_indexes;
+  std::vector <QModelIndex>::const_iterator m_current_index;
+
+  void search_children (const tl::GlobPattern &pattern, const QModelIndex &parent, bool recurse);
 };
 
 }

src/laybasic/layLayoutView.cc

@@ -42,6 +42,7 @@
 #include "tlString.h"
 #include "tlLog.h"
 #include "tlAssert.h"
+#include "layLayoutView.h"
 #include "layViewOp.h"
 #include "layViewObject.h"
 #include "layLayoutViewConfigPages.h"

src/laybasic/layViewObject.cc

@@ -25,6 +25,7 @@
 #include <QWheelEvent>
 #include <QKeyEvent>
 #include <QMimeData>
+#include <QCoreApplication>
 
 #include "layViewObject.h"
 #include "layCanvasPlane.h"
@@ -367,6 +368,12 @@ ViewObjectWidget::end_mouse_event ()
   }
 }
 
+bool
+ViewObjectWidget::focusNextPrevChild (bool /*next*/)
+{
+  return false;
+}
+
 void 
 ViewObjectWidget::keyPressEvent (QKeyEvent *e)
 {

src/laybasic/layViewObject.h

@@ -603,66 +603,6 @@ public:
    */
   ~ViewObjectWidget ();
 
-  /**
-   *  @brief Qt keyboard event handler
-   */
-  void keyPressEvent (QKeyEvent *e);
-
-  /**
-   *  @brief Qt mouse move event handler
-   */
-  void mouseMoveEvent (QMouseEvent *e);
-
-  /**
-   *  @brief Qt mouse leave event handler
-   */
-  void leaveEvent (QEvent *e);
-
-  /**
-   *  @brief Qt mouse enter event handler
-   */
-  void enterEvent (QEvent *e);
-
-  /**
-   *  @brief Qt mouse button press event handler
-   */
-  void mousePressEvent (QMouseEvent *e);
-
-  /**
-   *  @brief Qt mouse button double-click event handler
-   */
-  void mouseDoubleClickEvent (QMouseEvent *e);
-
-  /**
-   *  @brief Qt mouse button release event handler
-   */
-  void mouseReleaseEvent (QMouseEvent *e);
-
-  /**
-   *  @brief Qt drag enter event handler
-   */
-  void dragEnterEvent (QDragEnterEvent *event);
-
-  /**
-   *  @brief Qt drag leave event handler
-   */
-  void dragLeaveEvent (QDragLeaveEvent *event);
-
-  /**
-   *  @brief Qt drag enter event handler
-   */
-  void dragMoveEvent (QDragMoveEvent *event);
-
-  /**
-   *  @brief Qt drop event handler
-   */
-  void dropEvent (QDropEvent *event);
-
-  /**
-   *  @brief Qt mouse wheel event handler
-   */
-  void wheelEvent (QWheelEvent *e);
-
   /**
    *  @brief Cancel all drag operations
    */
@@ -966,6 +906,71 @@ public:
   void set_default_cursor (lay::Cursor::cursor_shape cursor);
 
 protected:
+  /**
+   *  @brief Qt focus event handler
+   */
+  bool focusNextPrevChild (bool next);
+
+  /**
+   *  @brief Qt keyboard event handler
+   */
+  void keyPressEvent (QKeyEvent *e);
+
+  /**
+   *  @brief Qt mouse move event handler
+   */
+  void mouseMoveEvent (QMouseEvent *e);
+
+  /**
+   *  @brief Qt mouse leave event handler
+   */
+  void leaveEvent (QEvent *e);
+
+  /**
+   *  @brief Qt mouse enter event handler
+   */
+  void enterEvent (QEvent *e);
+
+  /**
+   *  @brief Qt mouse button press event handler
+   */
+  void mousePressEvent (QMouseEvent *e);
+
+  /**
+   *  @brief Qt mouse button double-click event handler
+   */
+  void mouseDoubleClickEvent (QMouseEvent *e);
+
+  /**
+   *  @brief Qt mouse button release event handler
+   */
+  void mouseReleaseEvent (QMouseEvent *e);
+
+  /**
+   *  @brief Qt drag enter event handler
+   */
+  void dragEnterEvent (QDragEnterEvent *event);
+
+  /**
+   *  @brief Qt drag leave event handler
+   */
+  void dragLeaveEvent (QDragLeaveEvent *event);
+
+  /**
+   *  @brief Qt drag enter event handler
+   */
+  void dragMoveEvent (QDragMoveEvent *event);
+
+  /**
+   *  @brief Qt drop event handler
+   */
+  void dropEvent (QDropEvent *event);
+
+  /**
+   *  @brief Qt mouse wheel event handler
+   */
+  void wheelEvent (QWheelEvent *e);
+
   /**
    *  @brief Set the transformation for mouse events
    */

src/laybasic/layWidgets.cc

@@ -976,6 +976,8 @@ bool DecoratedLineEdit::event (QEvent *event)
     QKeyEvent *ke = static_cast<QKeyEvent *> (event);
     if (ke->key () == Qt::Key_Escape && m_escape_signal_enabled) {
       ke->accept ();
+    } else if ((ke->key () == Qt::Key_Tab || ke->key () == Qt::Key_Backtab) && m_tab_signal_enabled) {
+      ke->accept ();
     }
   }
   return QLineEdit::event (event);