qxtlabel.h

Go to the documentation of this file.

/****************************************************************************
 **
 ** Copyright (C) Qxt Foundation. Some rights reserved.
 **
 ** This file is part of the QxtGui module of the Qxt library.
 **
 ** This library is free software; you can redistribute it and/or modify it
 ** under the terms of the Common Public License, version 1.0, as published
 ** by IBM, and/or under the terms of the GNU Lesser General Public License,
 ** version 2.1, as published by the Free Software Foundation.
 **
 ** This file is provided "AS IS", without WARRANTIES OR CONDITIONS OF ANY
 ** KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY
 ** WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR
 ** FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** You should have received a copy of the CPL and the LGPL along with this
 ** file. See the LICENSE file and the cpl1.0.txt/lgpl-2.1.txt files
 ** included with the source distribution for more information.
 ** If you did not receive a copy of the licenses, contact the Qxt Foundation.
 **
 ** <http://libqxt.org>  <foundation@libqxt.org>
 **
 ****************************************************************************/
#ifndef QXTLABEL_H
#define QXTLABEL_H

#include <QFrame>
#include <QObject>

template <typename PUB>
class QxtPrivate
{
public:
  virtual ~QxtPrivate()
  {}
  inline void QXT_setPublic(PUB* pub)
  {
    qxt_p_ptr = pub;
  }

protected:
  inline PUB& qxt_p()
  {
    return *qxt_p_ptr;
  }
  inline const PUB& qxt_p() const
  {
    return *qxt_p_ptr;
  }

private:
  PUB* qxt_p_ptr;
};

template <typename PUB, typename PVT>
class QxtPrivateInterface
{
  friend class QxtPrivate<PUB>;
public:
  QxtPrivateInterface()
  {
    pvt = new PVT;
  }
  ~QxtPrivateInterface()
  {
    delete pvt;
  }

  inline void setPublic(PUB* pub)
  {
    pvt->QXT_setPublic(pub);
  }
  inline PVT& operator()()
  {
    return *static_cast<PVT*>(pvt);
  }
  inline const PVT& operator()() const
  {
    return *static_cast<PVT*>(pvt);
  }
private:
  QxtPrivateInterface(const QxtPrivateInterface&) { }
  QxtPrivateInterface& operator=(const QxtPrivateInterface&) { }
  QxtPrivate<PUB>* pvt;
};

class Qxt : public QObject
{
  Q_OBJECT
  Q_ENUMS(Rotation)
  Q_ENUMS(DecorationStyle)
  Q_ENUMS(ErrorCode)

public:
  enum Rotation
  {
    NoRotation  = 0,
    UpsideDown  = 180,
    Clockwise  = 90,
    CounterClockwise = 270
  };
};

class QxtLabelPrivate;

class QxtLabel : public QFrame
{
    Q_OBJECT
    Q_PROPERTY(QString text READ text WRITE setText NOTIFY textChanged)
    Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment)
    Q_PROPERTY(Qt::TextElideMode elideMode READ elideMode WRITE setElideMode)
    Q_PROPERTY(Qxt::Rotation rotation READ rotation WRITE setRotation)

public:
    explicit QxtLabel(QWidget* parent = 0, Qt::WindowFlags flags = 0);
    explicit QxtLabel(const QString& text, QWidget* parent = 0, Qt::WindowFlags flags = 0);
    virtual ~QxtLabel();

    QString text() const;

    Qt::Alignment alignment() const;
    void setAlignment(Qt::Alignment alignment);

    Qt::TextElideMode elideMode() const;
    void setElideMode(Qt::TextElideMode mode);

    Qxt::Rotation rotation() const;
    void setRotation(Qxt::Rotation rotation);

    virtual QSize sizeHint() const;
    virtual QSize minimumSizeHint() const;

public slots:
    void setText(const QString& text);

signals:
    void clicked();
    void textChanged(const QString& text);

protected:
    virtual void changeEvent(QEvent* event);
    virtual void mousePressEvent(QMouseEvent* event);
    virtual void mouseReleaseEvent(QMouseEvent* event);
    virtual void paintEvent(QPaintEvent* event);

private:
    friend class QxtLabelPrivate;
    QxtPrivateInterface<QxtLabel, QxtLabelPrivate> qxt_d;
};

#endif // QXTLABEL_H