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qitemdelegate.h

/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 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 GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#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_MODULE(Gui)

#ifndef QT_NO_ITEMVIEWS
class QItemDelegatePrivate;
class QItemEditorFactory;

00040 class Q_GUI_EXPORT QItemDelegate : public QAbstractItemDelegate
{
    Q_OBJECT
00043     Q_PROPERTY(bool clipping READ hasClipping WRITE setClipping)

public:
    explicit QItemDelegate(QObject *parent = 0);
    ~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_HEADER

#endif // QITEMDELEGATE_H

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