QtLayout.h

Go to the documentation of this file.

//# QtLayout.h: Qt definition of the flow-layout and borderlayout.
//# Copyright (C) 2005
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//#        Internet email: aips2-request@nrao.edu.
//#        Postal address: AIPS++ Project Office
//#                        National Radio Astronomy Observatory
//#                        520 Edgemont Road
//#                        Charlottesville, VA 22903-2475 USA
//#
//# $Id$


#ifndef QTFLOWLAYOUT_H
#define QTFLOWLAYOUT_H

#include <casa/aips.h>

#include <graphics/X11/X_enter.h>
#  include <QLayout>
#  include <QRect>
#  include <QWidgetItem>
#include <graphics/X11/X_exit.h>


namespace casa { //# NAMESPACE CASA - BEGIN



class QtFlowLayout : public QLayout
    {
    public:
        QtFlowLayout(QWidget *parent, int margin = 0, int spacing = -1);
        QtFlowLayout(int spacing = -1);
        ~QtFlowLayout();

        void addItem(QLayoutItem *item);
        Qt::Orientations expandingDirections() const;
        bool hasHeightForWidth() const;
        int heightForWidth(int) const;
        int count() const;
        QLayoutItem *itemAt(int index) const;
        QSize minimumSize() const;
        void setGeometry(const QRect &rect);
        QSize sizeHint() const;
        QLayoutItem *takeAt(int index);

    private:
        int doLayout(const QRect &rect, bool testOnly) const;

        QList<QLayoutItem *> itemList;
};


class QtBorderLayout : public QLayout
{
public:
    enum Position { West, North, South, East, Center };

    QtBorderLayout(QWidget *parent, int margin = 0, int spacing = -1);
    QtBorderLayout(int spacing = -1);
    ~QtBorderLayout();

    void addItem(QLayoutItem *item);
    void addWidget(QWidget *widget, Position position);
    Qt::Orientations expandingDirections() const;
    bool hasHeightForWidth() const;
    int count() const;
    QLayoutItem *itemAt(int index) const;
    QSize minimumSize() const;
    void setGeometry(const QRect &rect);
    QSize sizeHint() const;
    QLayoutItem *takeAt(int index);

    void add(QLayoutItem *item, Position position);

private:
    struct ItemWrapper
    {
        ItemWrapper(QLayoutItem *i, Position p) {
            item = i;
            position = p;
        }

        QLayoutItem *item;
        Position position;
    };

    enum SizeType { MinimumSize, SizeHint };
    QSize calculateSize(SizeType sizeType) const;

    QList<ItemWrapper *> list;
};

} //# NAMESPACE CASA - END

#endif