examples/itemviews/stardelegate/stardelegate.cpp
changeset 0 1918ee327afb
child 4 3b1da2848fc7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/itemviews/stardelegate/stardelegate.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,130 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "stardelegate.h"
+#include "stareditor.h"
+#include "starrating.h"
+
+//! [0]
+void StarDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
+                         const QModelIndex &index) const
+{
+    if (qVariantCanConvert<StarRating>(index.data())) {
+        StarRating starRating = qVariantValue<StarRating>(index.data());
+
+        if (option.state & QStyle::State_Selected)
+            painter->fillRect(option.rect, option.palette.highlight());
+
+        starRating.paint(painter, option.rect, option.palette,
+                         StarRating::ReadOnly);
+    } else {
+        QStyledItemDelegate::paint(painter, option, index);
+    }
+//! [0]
+}
+
+//! [1]
+QSize StarDelegate::sizeHint(const QStyleOptionViewItem &option,
+                             const QModelIndex &index) const
+{
+    if (qVariantCanConvert<StarRating>(index.data())) {
+        StarRating starRating = qVariantValue<StarRating>(index.data());
+        return starRating.sizeHint();
+    } else {
+        return QStyledItemDelegate::sizeHint(option, index);
+    }
+}
+//! [1]
+
+//! [2]
+QWidget *StarDelegate::createEditor(QWidget *parent,
+                                    const QStyleOptionViewItem &option,
+                                    const QModelIndex &index) const
+
+{
+    if (qVariantCanConvert<StarRating>(index.data())) {
+        StarEditor *editor = new StarEditor(parent);
+        connect(editor, SIGNAL(editingFinished()),
+                this, SLOT(commitAndCloseEditor()));
+        return editor;
+    } else {
+        return QStyledItemDelegate::createEditor(parent, option, index);
+    }
+}
+//! [2]
+
+//! [3]
+void StarDelegate::setEditorData(QWidget *editor,
+                                 const QModelIndex &index) const
+{
+    if (qVariantCanConvert<StarRating>(index.data())) {
+        StarRating starRating = qVariantValue<StarRating>(index.data());
+        StarEditor *starEditor = qobject_cast<StarEditor *>(editor);
+        starEditor->setStarRating(starRating);
+    } else {
+        QStyledItemDelegate::setEditorData(editor, index);
+    }
+}
+//! [3]
+
+//! [4]
+void StarDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
+                                const QModelIndex &index) const
+{
+    if (qVariantCanConvert<StarRating>(index.data())) {
+        StarEditor *starEditor = qobject_cast<StarEditor *>(editor);
+        model->setData(index, qVariantFromValue(starEditor->starRating()));
+    } else {
+        QStyledItemDelegate::setModelData(editor, model, index);
+    }
+}
+//! [4]
+
+//! [5]
+void StarDelegate::commitAndCloseEditor()
+{
+    StarEditor *editor = qobject_cast<StarEditor *>(sender());
+    emit commitData(editor);
+    emit closeEditor(editor);
+}
+//! [5]