--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/manual/qgraphicsitemgroup/widget.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -0,0 +1,260 @@
+/****************************************************************************
+**
+** 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 test suite 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 "widget.h"
+#include "ui_widget.h"
+#include <QGraphicsOpacityEffect>
+#include <QPropertyAnimation>
+
+Widget::Widget(QWidget *parent) :
+    QWidget(parent),
+    ui(new Ui::Widget),
+    previousSelectionCount(0)
+{
+    ui->setupUi(this);
+
+    effect = new QGraphicsOpacityEffect;
+    effect->setOpacity(0.3);
+    ui->groupBox->setGraphicsEffect(effect);
+
+    fadeIn = new QPropertyAnimation(effect, "opacity");
+    fadeIn->setDuration(200);
+    fadeIn->setStartValue(0.3);
+    fadeIn->setEndValue(1.);
+
+    fadeOut = new QPropertyAnimation(effect, "opacity");
+    fadeOut->setDuration(200);
+    fadeOut->setStartValue(1.);
+    fadeOut->setEndValue(0.3);
+
+    scene = new CustomScene;
+    scene->setSceneRect(-250,-250,500,500);
+    ui->view->setScene(scene);
+    scene->setBackgroundBrush(Qt::white);
+    ui->view->setInteractive(true);
+    ui->view->setDragMode(QGraphicsView::RubberBandDrag);
+    ui->view->setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
+    ui->view->setRenderHints( QPainter::SmoothPixmapTransform |
+                              QPainter::TextAntialiasing |
+                              QPainter::Antialiasing );
+
+    rectBlue = new CustomItem(-100, -100, 50, 50, QColor(80, 80, 200));
+    scene->addItem(rectBlue);
+    rectGreen = new CustomItem(100, -100, 50, 50, QColor(80, 200, 80));
+    scene->addItem(rectGreen);
+    rectRed = new CustomItem(-100, 100, 50, 50, QColor(200, 80, 80));
+    scene->addItem(rectRed);
+    rectYellow = new CustomItem(100, 100, 50, 50, QColor(200, 200, 20));
+    scene->addItem(rectYellow);
+
+    connect(scene, SIGNAL(selectionChanged()), this, SLOT(onSceneSelectionChanged()));
+}
+
+Widget::~Widget()
+{
+    delete ui;
+    delete fadeIn;
+    delete fadeOut;
+}
+
+void Widget::on_rotate_valueChanged(int value)
+{
+    if (scene->selectedItems().count() != 1)
+        return;
+
+    QGraphicsItem *item = scene->selectedItems().at(0);
+    item->setRotation(value);
+    ui->rotateItem->setValue(checkedItem()->rotation());
+}
+
+void Widget::on_scale_valueChanged(int value)
+{
+    if (scene->selectedItems().count() != 1)
+        return;
+
+    QGraphicsItem *item = scene->selectedItems().at(0);
+    item->setScale(value / 10.);
+    ui->scaleItem->setValue(checkedItem()->scale() * 10);
+}
+
+void Widget::on_rotateItem_valueChanged(int value)
+{
+    if (!scene->selectedItems().empty() && scene->selectedItems().at(0) == checkedItem())
+        ui->rotate->setValue(value);
+    else
+        checkedItem()->setRotation(value);
+}
+
+void Widget::on_scaleItem_valueChanged(int value)
+{
+    if (!scene->selectedItems().empty() && scene->selectedItems().at(0) == checkedItem())
+        ui->scale->setValue(value);
+    else
+        checkedItem()->setScale(value / 10.);
+}
+
+void Widget::on_group_clicked()
+{
+    QList<QGraphicsItem*> all = scene->selectedItems();
+    if (all.size() < 2)
+        return;
+
+    QList<CustomItem*> items = scene->selectedCustomItems();
+    QList<CustomGroup*> groups = scene->selectedCustomGroups();
+
+    if (groups.size() == 1) {
+        foreach (CustomItem *item, items) {
+            item->setSelected(false);
+            groups[0]->addToGroup(item);
+        }
+
+        return;
+    }
+
+    CustomGroup* group = new CustomGroup;
+    scene->addItem(group);
+    foreach (QGraphicsItem *item, all) {
+        item->setSelected(false);
+        group->addToGroup(item);
+    }
+    group->setSelected(true);
+
+    updateUngroupButton();
+}
+
+void Widget::on_dismantle_clicked()
+{
+    QList<CustomGroup*> groups = scene->selectedCustomGroups();
+
+    foreach (CustomGroup *group, groups) {
+        foreach (QGraphicsItem *item, group->childItems())
+            group->removeFromGroup(item);
+
+        delete group;
+    }
+
+    updateUngroupButton();
+}
+
+void Widget::on_merge_clicked()
+{
+    QList<CustomGroup*> groups = scene->selectedCustomGroups();
+    if (groups.size() < 2)
+        return;
+
+    CustomGroup *newBigGroup = groups.takeFirst();
+    foreach (CustomGroup *group, groups) {
+        foreach (QGraphicsItem *item, group->childItems())
+            item->setGroup(newBigGroup);
+
+        delete group;
+    }
+}
+
+void Widget::onSceneSelectionChanged()
+{
+    QList<QGraphicsItem*> all = scene->selectedItems();
+    QList<CustomGroup*> groups = scene->selectedCustomGroups();
+
+    if (all.empty() && all.count() != previousSelectionCount) {
+        fadeOut->start();
+    } else if (previousSelectionCount == 0) {
+        fadeIn->start();
+    }
+
+    if (all.count() == 1) {
+        QGraphicsItem *item = all.at(0);
+        ui->rotate->setValue(item->rotation());
+        ui->scale->setValue(item->scale() * 10);
+    } else {
+        ui->rotate->setValue(ui->rotate->minimum());
+        ui->scale->setValue(ui->scale->minimum());
+    }
+
+    ui->rotate->setEnabled(all.size() == 1);
+    ui->scale->setEnabled(all.size() == 1);
+    ui->group->setEnabled(all.size() > 1);
+    ui->dismantle->setEnabled(!groups.empty());
+    ui->merge->setEnabled(groups.size() > 1);
+
+    previousSelectionCount = all.size();
+
+    updateUngroupButton();
+}
+
+void Widget::on_ungroup_clicked()
+{
+    QGraphicsItemGroup *oldGroup = checkedItem()->group();
+    checkedItem()->setGroup(0);
+    if (oldGroup && oldGroup->childItems().empty())
+        delete oldGroup;
+
+    updateUngroupButton();
+}
+
+void Widget::updateUngroupButton()
+{
+    ui->ungroup->setEnabled(checkedItem()->group() != 0);
+}
+
+CustomItem * Widget::checkedItem() const
+{
+    CustomItem *item;
+
+    if (ui->blue->isChecked())
+        item = rectBlue;
+    else if (ui->red->isChecked())
+        item = rectRed;
+    else if (ui->green->isChecked())
+        item = rectGreen;
+    else if (ui->yellow->isChecked())
+        item = rectYellow;
+
+    return item;
+}
+
+void Widget::on_buttonGroup_buttonClicked()
+{
+    ui->rotateItem->setValue(checkedItem()->rotation());
+    ui->scaleItem->setValue(checkedItem()->scale() * 10);
+
+    updateUngroupButton();
+}