Long live Qt 4.5!

1 files changed, 126 insertions, 0 deletions

diff --git a/demos/books/bookdelegate.cpp b/demos/books/bookdelegate.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "bookdelegate.h"
+
+#include <QtGui>
+
+BookDelegate::BookDelegate(QObject *parent)
+    : QSqlRelationalDelegate(parent), star(QPixmap(":images/star.png"))
+{
+}
+
+void BookDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
+                           const QModelIndex &index) const
+{
+    if (index.column() != 5) {
+        QStyleOptionViewItemV3 opt = option;
+        opt.rect.adjust(0, 0, -1, -1); // since we draw the grid ourselves
+        QSqlRelationalDelegate::paint(painter, opt, index);
+    } else {
+        const QAbstractItemModel *model = index.model();
+        QPalette::ColorGroup cg = (option.state & QStyle::State_Enabled) ?
+            (option.state & QStyle::State_Active) ? QPalette::Normal : QPalette::Inactive : QPalette::Disabled;
+
+        if (option.state & QStyle::State_Selected)
+            painter->fillRect(option.rect, option.palette.color(cg, QPalette::Highlight));
+
+        int rating = model->data(index, Qt::DisplayRole).toInt();
+        int width = star.width();
+        int height = star.height();
+        int x = option.rect.x();
+        int y = option.rect.y() + (option.rect.height() / 2) - (height / 2);
+        for (int i = 0; i < rating; ++i) {
+            painter->drawPixmap(x, y, star);
+            x += width;
+        }
+        drawFocus(painter, option, option.rect.adjusted(0, 0, -1, -1)); // since we draw the grid ourselves
+    }
+
+    QPen pen = painter->pen();
+    painter->setPen(option.palette.color(QPalette::Mid));
+    painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
+    painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
+    painter->setPen(pen);
+}
+
+QSize BookDelegate::sizeHint(const QStyleOptionViewItem &option,
+                                 const QModelIndex &index) const
+{
+    if (index.column() == 5)
+        return QSize(5 * star.width(), star.height()) + QSize(1, 1);
+
+    return QSqlRelationalDelegate::sizeHint(option, index) + QSize(1, 1); // since we draw the grid ourselves
+}
+
+bool BookDelegate::editorEvent(QEvent *event, QAbstractItemModel *model,
+                               const QStyleOptionViewItem &option,
+                               const QModelIndex &index)
+{
+    if (index.column() != 5)
+        return QSqlRelationalDelegate::editorEvent(event, model, option, index);
+
+    if (event->type() == QEvent::MouseButtonPress) {
+        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
+        int stars = qBound(0, int(0.7 + qreal(mouseEvent->pos().x()
+            - option.rect.x()) / star.width()), 5);
+        model->setData(index, QVariant(stars));
+        return false; //so that the selection can change
+    }
+
+    return true;
+}
+
+QWidget *BookDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option,
+                                    const QModelIndex &index) const
+{
+    if (index.column() != 4)
+        return QSqlRelationalDelegate::createEditor(parent, option, index);
+
+    // for editing the year, return a spinbox with a range from -1000 to 2100.
+    QSpinBox *sb = new QSpinBox(parent);
+    sb->setFrame(false);
+    sb->setMaximum(2100);
+    sb->setMinimum(-1000);
+
+    return sb;
+}
+