--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/graphicsview/padnavigator/panel.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,238 @@
+/****************************************************************************
+**
+** 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 "panel.h"
+#include "roundrectitem.h"
+#include "splashitem.h"
+#include "ui_backside.h"
+
+#ifndef QT_NO_OPENGL
+#include <QtOpenGL/QtOpenGL>
+#else
+#endif
+#include <QtGui/QtGui>
+
+#include <math.h>
+
+Panel::Panel(int width, int height)
+ : selectedX(0),
+ selectedY(0),
+ width(width),
+ height(height),
+ flipped(false),
+ flipLeft(true)
+{
+ setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+ setCacheMode(CacheBackground);
+ setViewportUpdateMode(FullViewportUpdate);
+ setRenderHints(QPainter::Antialiasing | QPainter::SmoothPixmapTransform
+ | QPainter::TextAntialiasing);
+ setBackgroundBrush(QPixmap(":/images/blue_angle_swirl.jpg"));
+#ifndef QT_NO_OPENGL
+ setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers)));
+#endif
+ setMinimumSize(50, 50);
+
+ selectionTimeLine = new QTimeLine(150, this);
+ flipTimeLine = new QTimeLine(500, this);
+
+ QRectF bounds((-width / 2.0) * 150, (-height / 2.0) * 150, width * 150, height * 150);
+
+ scene = new QGraphicsScene(bounds, this);
+ scene->setItemIndexMethod(QGraphicsScene::NoIndex);
+ setScene(scene);
+
+ baseItem = new RoundRectItem(bounds, QColor(226, 255, 92, 64));
+ scene->addItem(baseItem);
+
+ QWidget *embed = new QWidget;
+ ui = new Ui_BackSide;
+ ui->setupUi(embed);
+ ui->hostName->setFocus();
+
+ backItem = new RoundRectItem(bounds, embed->palette().window(), embed);
+ backItem->setTransform(QTransform().rotate(180, Qt::YAxis));
+ backItem->setParentItem(baseItem);
+
+ selectionItem = new RoundRectItem(QRectF(-60, -60, 120, 120), Qt::gray);
+ selectionItem->setParentItem(baseItem);
+ selectionItem->setZValue(-1);
+ selectionItem->setPos(posForLocation(0, 0));
+ startPos = selectionItem->pos();
+
+ grid = new QGraphicsItem **[height];
+
+ for (int y = 0; y < height; ++y) {
+ grid[y] = new QGraphicsItem *[width];
+
+ for (int x = 0; x < width; ++x) {
+ RoundRectItem *item = new RoundRectItem(QRectF(-54, -54, 108, 108),
+ QColor(214, 240, 110, 128));
+ item->setPos(posForLocation(x, y));
+
+ item->setParentItem(baseItem);
+ item->setFlag(QGraphicsItem::ItemIsFocusable);
+ grid[y][x] = item;
+
+ switch (qrand() % 9) {
+ case 0: item->setPixmap(QPixmap(":/images/kontact_contacts.png")); break;
+ case 1: item->setPixmap(QPixmap(":/images/kontact_journal.png")); break;
+ case 2: item->setPixmap(QPixmap(":/images/kontact_notes.png")); break;
+ case 3: item->setPixmap(QPixmap(":/images/kopeteavailable.png")); break;
+ case 4: item->setPixmap(QPixmap(":/images/metacontact_online.png")); break;
+ case 5: item->setPixmap(QPixmap(":/images/minitools.png")); break;
+ case 6: item->setPixmap(QPixmap(":/images/kontact_journal.png")); break;
+ case 7: item->setPixmap(QPixmap(":/images/kontact_contacts.png")); break;
+ case 8: item->setPixmap(QPixmap(":/images/kopeteavailable.png")); break;
+ default:
+ break;
+ }
+
+ connect(item, SIGNAL(activated()), this, SLOT(flip()));
+ }
+ }
+
+ grid[0][0]->setFocus();
+
+ connect(backItem, SIGNAL(activated()),
+ this, SLOT(flip()));
+ connect(selectionTimeLine, SIGNAL(valueChanged(qreal)),
+ this, SLOT(updateSelectionStep(qreal)));
+ connect(flipTimeLine, SIGNAL(valueChanged(qreal)),
+ this, SLOT(updateFlipStep(qreal)));
+
+ splash = new SplashItem;
+ splash->setZValue(5);
+ splash->setPos(-splash->rect().width() / 2, scene->sceneRect().top());
+ scene->addItem(splash);
+
+ splash->grabKeyboard();
+
+ updateSelectionStep(0);
+
+ setWindowTitle(tr("Pad Navigator Example"));
+}
+
+Panel::~Panel()
+{
+ for (int y = 0; y < height; ++y)
+ delete [] grid[y];
+ delete [] grid;
+}
+
+void Panel::keyPressEvent(QKeyEvent *event)
+{
+ if (splash->isVisible() || event->key() == Qt::Key_Return || flipped) {
+ QGraphicsView::keyPressEvent(event);
+ return;
+ }
+
+ selectedX = (selectedX + width + (event->key() == Qt::Key_Right) - (event->key() == Qt::Key_Left)) % width;
+ selectedY = (selectedY + height + (event->key() == Qt::Key_Down) - (event->key() == Qt::Key_Up)) % height;
+ grid[selectedY][selectedX]->setFocus();
+
+ selectionTimeLine->stop();
+ startPos = selectionItem->pos();
+ endPos = posForLocation(selectedX, selectedY);
+ selectionTimeLine->start();
+}
+
+void Panel::resizeEvent(QResizeEvent *event)
+{
+ QGraphicsView::resizeEvent(event);
+ fitInView(scene->sceneRect(), Qt::KeepAspectRatio);
+}
+
+void Panel::updateSelectionStep(qreal val)
+{
+ QPointF newPos(startPos.x() + (endPos - startPos).x() * val,
+ startPos.y() + (endPos - startPos).y() * val);
+ selectionItem->setPos(newPos);
+
+ QTransform transform;
+ yrot = newPos.x() / 6.0;
+ xrot = newPos.y() / 6.0;
+ transform.rotate(newPos.x() / 6.0, Qt::YAxis);
+ transform.rotate(newPos.y() / 6.0, Qt::XAxis);
+ baseItem->setTransform(transform);
+}
+
+void Panel::updateFlipStep(qreal val)
+{
+ qreal finalxrot = xrot - xrot * val;
+ qreal finalyrot;
+ if (flipLeft)
+ finalyrot = yrot - yrot * val - 180 * val;
+ else
+ finalyrot = yrot - yrot * val + 180 * val;
+ QTransform transform;
+ transform.rotate(finalyrot, Qt::YAxis);
+ transform.rotate(finalxrot, Qt::XAxis);
+ qreal scale = 1 - sin(3.14 * val) * 0.3;
+ transform.scale(scale, scale);
+ baseItem->setTransform(transform);
+ if (val == 0)
+ grid[selectedY][selectedX]->setFocus();
+}
+
+void Panel::flip()
+{
+ if (flipTimeLine->state() == QTimeLine::Running)
+ return;
+
+ if (flipTimeLine->currentValue() == 0) {
+ flipTimeLine->setDirection(QTimeLine::Forward);
+ flipTimeLine->start();
+ flipped = true;
+ flipLeft = selectionItem->pos().x() < 0;
+ } else {
+ flipTimeLine->setDirection(QTimeLine::Backward);
+ flipTimeLine->start();
+ flipped = false;
+ }
+}
+
+QPointF Panel::posForLocation(int x, int y) const
+{
+ return QPointF(x * 150, y * 150)
+ - QPointF((width - 1) * 75, (height - 1) * 75);
+}