tab-bar.h

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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2018-2022 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave 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 3 of the License, or
// (at your option) any later version.
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
// along with Octave; see the file COPYING.  If not, see
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////////////////////////////////////////////////////////////////////////
 
// This file implements a tab bar derived from QTabBar with a contextmenu
// and possibility to close a tab via double-left or middle mouse click.
 
#if ! defined (octave_tab_bar_h)
#define octave_tab_bar_h 1
 
#include <QMenu>
#include <QMouseEvent>
#include <QSize>
#include <QStyleOptionTab>
#include <QStylePainter>
#include <QTabBar>
 
namespace octave
{
  // Subclassed QTabBar for usable tab-bar, rotated tabs and
  // reimplemented mouse event
 
  class tab_bar : public QTabBar
  {
    Q_OBJECT
 
  public:
 
    tab_bar (QWidget *p);
 
    ~tab_bar (void) = default;
 
    void set_rotated (int rotated);
    QMenu * get_context_menu (void) { return m_context_menu; };
    QSize tabSizeHint (int idx) const;
 
  signals:
 
    void close_current_tab_signal (bool);
 
  public slots:
 
    void switch_left_tab (void);
    void switch_right_tab (void);
    void move_tab_left (void);
    void move_tab_right (void);
    void sort_tabs_alph (void);
 
  private slots:
 
    void ctx_menu_activated (QAction *a);
 
  protected:
 
    void paintEvent(QPaintEvent *e);
    void mousePressEvent(QMouseEvent *event);
 
  private:
 
    void switch_tab (int direction, bool movetab = false);
 
    QMenu *m_context_menu;
    QList <QAction *> m_ctx_actions;
    int m_rotated;
  };
}
 
#endif