katie/src/gui/itemviews/qitemdelegate.h

/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Copyright (C) 2016-2019 Ivailo Monev
**
** This file is part of the QtGui module of the Katie Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QITEMDELEGATE_H
#define QITEMDELEGATE_H

#include <QtGui/qabstractitemdelegate.h>
#include <QtCore/qstring.h>
#include <QtGui/qpixmap.h>
#include <QtCore/qvariant.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE


#ifndef QT_NO_ITEMVIEWS

class QItemDelegatePrivate;
class QItemEditorFactory;

class Q_GUI_EXPORT QItemDelegate : public QAbstractItemDelegate
{
    Q_OBJECT
    Q_PROPERTY(bool clipping READ hasClipping WRITE setClipping)

public:
    explicit QItemDelegate(QObject *parent = Q_NULLPTR);
    ~QItemDelegate();

    bool hasClipping() const;
    void setClipping(bool clip);

    // painting
    void paint(QPainter *painter,
               const QStyleOptionViewItem &option,
               const QModelIndex &index) const;
    QSize sizeHint(const QStyleOptionViewItem &option,
                   const QModelIndex &index) const;

    // editing
    QWidget *createEditor(QWidget *parent,
                          const QStyleOptionViewItem &option,
                          const QModelIndex &index) const;

    void setEditorData(QWidget *editor, const QModelIndex &index) const;
    void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;

    void updateEditorGeometry(QWidget *editor,
                              const QStyleOptionViewItem &option,
                              const QModelIndex &index) const;

    // editor factory
    QItemEditorFactory *itemEditorFactory() const;
    void setItemEditorFactory(QItemEditorFactory *factory);

protected:
    virtual void drawDisplay(QPainter *painter, const QStyleOptionViewItem &option,
                             const QRect &rect, const QString &text) const;
    virtual void drawDecoration(QPainter *painter, const QStyleOptionViewItem &option,
                                const QRect &rect, const QPixmap &pixmap) const;
    virtual void drawFocus(QPainter *painter, const QStyleOptionViewItem &option,
                           const QRect &rect) const;
    virtual void drawCheck(QPainter *painter, const QStyleOptionViewItem &option,
                           const QRect &rect, Qt::CheckState state) const;
    void drawBackground(QPainter *painter, const QStyleOptionViewItem &option,
                        const QModelIndex &index) const;

    void doLayout(const QStyleOptionViewItem &option,
                  QRect *checkRect, QRect *iconRect, QRect *textRect, bool hint) const;

    QRect rect(const QStyleOptionViewItem &option, const QModelIndex &index, int role) const;

    bool eventFilter(QObject *object, QEvent *event);
    bool editorEvent(QEvent *event, QAbstractItemModel *model,
                     const QStyleOptionViewItem &option, const QModelIndex &index);

    QStyleOptionViewItem setOptions(const QModelIndex &index,
                                    const QStyleOptionViewItem &option) const;

    QPixmap decoration(const QStyleOptionViewItem &option, const QVariant &variant) const;
    QPixmap *selected(const QPixmap &pixmap, const QPalette &palette, bool enabled) const;

    QRect check(const QStyleOptionViewItem &option, const QRect &bounding,
                const QVariant &variant) const;
    QRect textRectangle(QPainter *painter, const QRect &rect,
                        const QFont &font, const QString &text) const;

private:
    Q_DECLARE_PRIVATE(QItemDelegate)
    Q_DISABLE_COPY(QItemDelegate)

    Q_PRIVATE_SLOT(d_func(), void _q_commitDataAndCloseEditor(QWidget*))
};

#endif // QT_NO_ITEMVIEWS

QT_END_NAMESPACE

QT_END_HEADER

#endif // QITEMDELEGATE_H