Merge pull request #1160 from EugeneZelenko/enhanced-tab-widget

Use enhanced tab widget for file tabs to easily navigate through larg…

src/lay/lay/lay.pro

@@ -11,6 +11,7 @@ HEADERS = \
     layClipDialog.h \
     layControlWidgetStack.h \
     layCrashMessage.h \
+    layEnhancedTabWidget.h \
     layFillDialog.h \
     layGSIHelpProvider.h \
     layHelpAboutDialog.h \
@@ -121,6 +122,7 @@ SOURCES = \
     layClipDialog.cc \
     layControlWidgetStack.cc \
     layCrashMessage.cc \
+    layEnhancedTabWidget.cc \
     layFillDialog.cc \
     layGSIHelpProvider.cc \
     layHelpAboutDialog.cc \

src/lay/lay/layEnhancedTabWidget.cc

@@ -0,0 +1,103 @@
+
+/*
+
+  KLayout Layout Viewer
+  Copyright (C) 2006-2022 Matthias Koefferlein
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+
+#include "layEnhancedTabWidget.h"
+
+#include <QAction>
+#include <QActionGroup>
+#include <QMenu>
+#include <QString>
+#include <QToolButton>
+
+namespace lay
+{
+
+// ---------------------------------------------------------------------------------------------
+//  EnhancedTabWidget implementation
+
+EnhancedTabWidget::EnhancedTabWidget (QWidget *parent)
+  : QTabWidget (parent)
+{
+  mp_list_tool_button = new QToolButton (this);
+  mp_list_tool_button->setAutoRaise (true);
+  ///\TODO: Replace placeholder with real icon.
+  mp_list_tool_button->setIcon (QIcon (QString::fromUtf8 (":/find_16px.png")));
+  mp_list_tool_button->setIconSize (QSize (20, 20));
+  mp_list_tool_button->setMenu (new QMenu (this));
+  mp_list_tool_button->setPopupMode (QToolButton::InstantPopup);
+  mp_list_tool_button->setToolButtonStyle (Qt::ToolButtonIconOnly);
+  mp_list_tool_button->setToolTip ( tr ("List of all opened views"));
+  setCornerWidget (mp_list_tool_button, Qt::TopRightCorner);
+
+  connect (mp_list_tool_button->menu (), &QMenu::aboutToShow,
+           this, &EnhancedTabWidget::list_tool_button_menu_about_to_show);
+
+  mp_list_action_group = new QActionGroup (this);
+  mp_list_action_group->setExclusive (true);
+
+  connect (mp_list_action_group, &QActionGroup::triggered,
+           this, &EnhancedTabWidget::list_action_group_triggered);
+}
+
+EnhancedTabWidget::~EnhancedTabWidget () = default;
+
+void EnhancedTabWidget::tabInserted (int index)
+{
+  QTabWidget::tabInserted (index);
+  update_list_button_visibility ();
+}
+
+void EnhancedTabWidget::tabRemoved (int index)
+{
+  QTabWidget::tabRemoved (index);
+  update_list_button_visibility ();
+}
+
+void EnhancedTabWidget::list_action_group_triggered (QAction *action)
+{
+  setCurrentIndex (action->data ().toInt ());
+}
+
+void EnhancedTabWidget::list_tool_button_menu_about_to_show ()
+{
+  mp_list_tool_button->menu ()->clear ();
+  if (count () > 1) {
+    for (int i = 0; i < count (); ++i) {
+      QAction *action = mp_list_tool_button->menu ()->addAction (tabText (i));
+      action->setCheckable (true);
+      action->setData (QVariant (i));
+      mp_list_action_group->addAction (action);
+    }
+    mp_list_action_group->actions ().at (currentIndex ())->setChecked (true);
+  }
+}
+
+void EnhancedTabWidget::update_list_button_visibility()
+{
+  if (cornerWidget (Qt::TopRightCorner) != nullptr) {
+    cornerWidget (Qt::TopRightCorner)->setVisible (count () > 1);
+  }
+}
+
+}
+

src/lay/lay/layEnhancedTabWidget.h

@@ -0,0 +1,62 @@
+
+/*
+
+  KLayout Layout Viewer
+  Copyright (C) 2006-2022 Matthias Koefferlein
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+
+#ifndef HDR_layEnhancedTabWidget
+#define HDR_layEnhancedTabWidget
+
+#include <QTabWidget>
+
+class QActionGroup;
+class QToolButton;
+
+namespace lay
+{
+
+class EnhancedTabWidget
+  : public QTabWidget
+{
+Q_OBJECT
+
+public:
+  EnhancedTabWidget (QWidget *parent);
+  ~EnhancedTabWidget () override;
+
+protected:
+  void tabInserted (int index) override;
+  void tabRemoved (int index) override;
+
+private slots:
+  void list_action_group_triggered (QAction* action);
+  void list_tool_button_menu_about_to_show ();
+
+private:
+  QActionGroup *mp_list_action_group;
+  QToolButton *mp_list_tool_button;
+
+  void update_list_button_visibility ();
+};
+
+}
+
+#endif
+

src/lay/lay/layMainWindow.cc

@@ -70,6 +70,7 @@
 #include "layDialogs.h"
 #include "laybasicConfig.h"
 #include "layConfig.h"
+#include "layEnhancedTabWidget.h"
 #include "layMainWindow.h"
 #include "layHelpDialog.h"
 #include "layNavigator.h"
@@ -227,12 +228,12 @@ MainWindow::MainWindow (QApplication *app, const char *name, bool undo_enabled)
   vbl->setContentsMargins (0, 0, 0, 0);
   vbl->setSpacing (0);
 
-  mp_tab_bar = new QTabBar (mp_main_frame);
-  vbl->addWidget (mp_tab_bar);
-  connect (mp_tab_bar, SIGNAL (currentChanged (int)), this, SLOT (view_selected (int)));
+  mp_tab_widget = new EnhancedTabWidget (mp_main_frame);
+  vbl->addWidget (mp_tab_widget);
+  connect (mp_tab_widget, SIGNAL (currentChanged (int)), this, SLOT (view_selected (int)));
 #if QT_VERSION >= 0x040500
-  mp_tab_bar->setTabsClosable(true);
-  connect (mp_tab_bar, SIGNAL (tabCloseRequested (int)), this, SLOT (tab_close_requested (int)));
+  mp_tab_widget->setTabsClosable(true);
+  connect (mp_tab_widget, SIGNAL (tabCloseRequested (int)), this, SLOT (tab_close_requested (int)));
 #endif
 
   mp_hp_dock_widget = new QDockWidget (QObject::tr ("Cells"), this);
@@ -682,8 +683,8 @@ MainWindow::close_all ()
   //  Clear the tab bar
   bool f = m_disable_tab_selected;
   m_disable_tab_selected = true;
-  while (mp_tab_bar->count () > 0) {
-    mp_tab_bar->removeTab (mp_tab_bar->count () - 1);
+  while (mp_tab_widget->count () > 0) {
+    mp_tab_widget->removeTab (mp_tab_widget->count () - 1);
   }
   m_disable_tab_selected = f;
 
@@ -2314,7 +2315,7 @@ MainWindow::view_selected (int index)
     //  Hint: setting the focus to the tab bar avoids problem with dangling keyboard focus.
     //  Sometimes, the focus was set to the hierarchy level spin buttons which caught Copy&Paste
     //  events in effect.
-    mp_tab_bar->setFocus ();
+    mp_tab_widget->setFocus ();
 
     if (! m_disable_tab_selected) {
       select_view (index);
@@ -2335,7 +2336,7 @@ MainWindow::select_view (int index)
 
     tl_assert (index >= 0 && index < int (views ()));
 
-    mp_tab_bar->setCurrentIndex (index);
+    mp_tab_widget->setCurrentIndex (index);
 
     bool box_set = (m_synchronized_views && current_view () != 0);
     db::DBox box;
@@ -2564,7 +2565,7 @@ MainWindow::clone_current_view ()
 
   bool f = m_disable_tab_selected;
   m_disable_tab_selected = true;
-  int index = mp_tab_bar->insertTab (-1, tl::to_qstring (view->title ()));
+  int index = mp_tab_widget->insertTab (-1, mp_views.back (), tl::to_qstring (view->title ()));
   m_disable_tab_selected = f;
 
   view_created_event (index);
@@ -2805,7 +2806,7 @@ MainWindow::close_view (int index)
         box = view (index)->viewport ().box ();
       }
 
-      mp_tab_bar->removeTab (index);
+      mp_tab_widget->removeTab (index);
       mp_view_stack->remove_widget (index);
       mp_lp_stack->remove_widget (index);
       mp_layer_toolbox_stack->remove_widget (index);
@@ -3381,7 +3382,7 @@ MainWindow::create_view ()
 
   bool f = m_disable_tab_selected;
   m_disable_tab_selected = true;
-  int index = mp_tab_bar->insertTab (-1, tl::to_qstring (current_view ()->title ()));
+  int index = mp_tab_widget->insertTab (-1, mp_views.back (), tl::to_qstring (current_view ()->title ()));
   m_disable_tab_selected = f;
 
   view_created_event (index);
@@ -3444,7 +3445,7 @@ MainWindow::create_or_load_layout (const std::string *filename, const db::LoadLa
 
       bool f = m_disable_tab_selected;
       m_disable_tab_selected = true;
-      int index = mp_tab_bar->insertTab (-1, QString ());
+      int index = mp_tab_widget->insertTab (-1, mp_views.back (), QString ());
       update_tab_title (index);
       m_disable_tab_selected = f;
       view_created_event (index);
@@ -3484,8 +3485,8 @@ MainWindow::update_tab_title (int i)
     title += v->title ();
   }
 
-  if (tl::to_string (mp_tab_bar->tabText (i)) != title) {
-    mp_tab_bar->setTabText (i, tl::to_qstring (title));
+  if (tl::to_string (mp_tab_widget->tabText (i)) != title) {
+    mp_tab_widget->setTabText (i, tl::to_qstring (title));
   }
 
   if (v) {
@@ -3500,8 +3501,8 @@ MainWindow::update_tab_title (int i)
         files += tl::to_string (tr ("(not saved)"));
       }
     }
-    if (tl::to_string (mp_tab_bar->tabToolTip (i)) != files) {
-      mp_tab_bar->setTabToolTip (i, tl::to_qstring (files));
+    if (tl::to_string (mp_tab_widget->tabToolTip (i)) != files) {
+      mp_tab_widget->setTabToolTip (i, tl::to_qstring (files));
     }
   }
 }

src/lay/lay/layMainWindow.h

@@ -51,7 +51,7 @@
 #include "tlDeferredExecution.h"
 #include "gsi.h"
 
-class QTabBar;
+class QTabWidget;
 class QToolBar;
 class QLabel;
 class QAction;
@@ -682,7 +682,7 @@ private:
   TextProgressDelegate m_text_progress;
 
   //  Main menu
-  QTabBar *mp_tab_bar;
+  QTabWidget *mp_tab_widget;
   QToolBar *mp_tool_bar;
   QDockWidget *mp_navigator_dock_widget;
   lay::Navigator *mp_navigator;