floatingtextwidget.h

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/***************************************************************************
 *   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.                                   *
 *                                                                         *
 *   copyright (C) 2002-2013                                               *
 *   Umbrello UML Modeller Authors <umbrello-devel@kde.org>                *
 ***************************************************************************/

#ifndef FLOATINGTEXTWIDGET_H
#define FLOATINGTEXTWIDGET_H

#include "basictypes.h"
#include "umlwidget.h"

class LinkWidget;
class UMLScene;

class FloatingTextWidget : public UMLWidget
{
    Q_OBJECT
public:
    explicit FloatingTextWidget(UMLScene * scene, Uml::TextRole::Enum role = Uml::TextRole::Floating,
                                const QString& text = "", Uml::ID::Type id = Uml::ID::None);
    virtual ~FloatingTextWidget();

    QString text() const;
    void setText(const QString &t);

    void setTextcmd(const QString &t);

    QString preText() const;
    void setPreText(const QString &t);

    QString postText() const;
    void setPostText(const QString &t);

    QString displayText() const;

    void showChangeTextDialog();
    void showOperationDialog(bool enableAutoIncrement = true);
    virtual void showPropertiesDialog();

    LinkWidget* link() const;
    void setLink(LinkWidget * l);

    bool activate(IDChangeLog* ChangeLog = 0);

    Uml::TextRole::Enum textRole() const;
    void setTextRole(Uml::TextRole::Enum role);

    void handleRename();
    void changeName(const QString& newText);

    static bool isTextValid(const QString &text);

    virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);

    virtual void saveToXMI(QDomDocument& qDoc, QDomElement& qElement);
    virtual bool loadFromXMI(QDomElement& qElement);

public Q_SLOTS:
    virtual void slotMenuSelection(QAction* action);
    void setMessageText();

protected:
    QSizeF minimumSize();

    virtual void moveWidgetBy(qreal diffX, qreal diffY);
    virtual void constrainMovementForAllWidgets(qreal &diffX, qreal &diffY);

private:
    QPointF constrainPosition(qreal diffX, qreal diffY);

    LinkWidget * m_linkWidget;


    QString m_preText;
    QString m_postText;
    Uml::TextRole::Enum m_textRole;


    qreal m_unconstrainedPositionX;

    qreal m_unconstrainedPositionY;

    int m_movementDirectionX;

    int m_movementDirectionY;

};

#endif