graphvizlayouterbackend_p.h

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/*
  This file is part of the KDAB State Machine Editor Library.
 
  SPDX-FileCopyrightText: 2015 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
  Author: Kevin Funk <kevin.funk@kdab.com>
 
  SPDX-License-Identifier: LGPL-2.1-only OR LicenseRef-KDAB-KDStateMachineEditor
 
  Licensees holding valid commercial KDAB State Machine Editor Library
  licenses may use this file in accordance with the KDAB State Machine Editor
  Library License Agreement provided with the Software.
 
  Contact info@kdab.com if any conditions of this licensing are not clear to you.
*/
 
#ifndef KDSME_LAYOUT_GRAPHVIZLAYOUTERBACKEND_P_H
#define KDSME_LAYOUT_GRAPHVIZLAYOUTERBACKEND_P_H
 
#include <QString>
#include <clocale>
 
QT_BEGIN_NAMESPACE
class QRectF;
QT_END_NAMESPACE
 
namespace KDSME {
class LayoutProperties;
class Transition;
class State;
class StateMachineScene;
}
 
class GraphvizLayouterBackend
{
public:
    enum LayoutMode
    {
        RecursiveMode, 
        NonRecursiveMode 
    };
 
    GraphvizLayouterBackend();
    ~GraphvizLayouterBackend();
 
    GraphvizLayouterBackend(const GraphvizLayouterBackend &other) = delete;
    GraphvizLayouterBackend &operator=(const GraphvizLayouterBackend &) = delete;
 
    LayoutMode layoutMode() const;
    void setLayoutMode(LayoutMode mode);
 
    void openLayout(KDSME::State *state, const KDSME::LayoutProperties *properties);
    void closeLayout();
 
    void buildState(KDSME::State *state);
    void buildTransitions(const KDSME::State *state);
 
    void buildTransition(KDSME::Transition *transition);
 
    void layout();
    void import();
 
    QRectF boundingRect() const;
 
    void saveToFile(const QString &filePath, const QString &format = QStringLiteral("png"));
 
private:
    struct Private;
    Private *const d;
};
 
class LocaleLocker // clazy:exclude=rule-of-three
{
public:
    inline LocaleLocker()
        : m_oldlocale(qstrdup(setlocale(LC_NUMERIC, nullptr)))
    {
        setlocale(LC_NUMERIC, "C");
    }
 
    inline ~LocaleLocker()
    {
        setlocale(LC_NUMERIC, m_oldlocale);
        delete[] m_oldlocale;
    }
 
private:
    const char *m_oldlocale;
};
 
#endif