view widgets/SubdividingMenu.h @ 738:d26545a2a02d tonioni

Rather than undrawing the bottom bit of the dial, don't draw it in the first place (necessary on shaded background)
author Chris Cannam
date Thu, 06 Mar 2014 13:52:33 +0000
parents cd81066ac7ad
children e4773943c9c1
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 QMUL.
    
    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.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef _SUBDIVIDING_MENU_H_
#define _SUBDIVIDING_MENU_H_

#include <QMenu>

#include <QString>
#include <set>
#include <map>

/**
 * A menu that divides its entries into submenus, alphabetically.  For
 * menus that may contain a very large or small number of named items
 * (e.g. plugins).
 *
 * The menu needs to be told, before any of the actions are added,
 * what the set of entry strings will be, so it can determine a
 * reasonable categorisation.  Do this by calling the setEntries()
 * method.  If it isn't practical to do this in advance, then add the
 * entries and call entriesAdded() afterwards instead. 
 */

class SubdividingMenu : public QMenu
{
    Q_OBJECT

public:
    SubdividingMenu(size_t lowerLimit = 0, size_t upperLimit = 0,
                    QWidget *parent = 0);
    SubdividingMenu(const QString &title, size_t lowerLimit = 0,
                    size_t upperLimit = 0, QWidget *parent = 0);
    virtual ~SubdividingMenu();

    void setEntries(const std::set<QString> &entries);
    void entriesAdded();

    // Action names and strings passed to addAction and addMenu must
    // appear in the set previously given to setEntries.  If you want
    // to use a different string, use the two-argument method and pass
    // the entry string (used to determine which submenu the action
    // ends up on) as the first argument.

    virtual void addAction(QAction *);
    virtual QAction *addAction(const QString &);
    virtual void addAction(const QString &entry, QAction *);
    
    virtual void addMenu(QMenu *);
    virtual QMenu *addMenu(const QString &);
    virtual void addMenu(const QString &entry, QMenu *);

protected:
    std::map<QString, QMenu *> m_nameToChunkMenuMap;

    size_t m_lowerLimit;
    size_t m_upperLimit;

    bool m_entriesSet;
    std::map<QString, QObject *> m_pendingEntries;
};

#endif