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Diffstat (limited to 'examples/graphicsview/padnavigator/panel.cpp')
| -rw-r--r-- | examples/graphicsview/padnavigator/panel.cpp | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/examples/graphicsview/padnavigator/panel.cpp b/examples/graphicsview/padnavigator/panel.cpp new file mode 100644 index 0000000..28a3cb4 --- /dev/null +++ b/examples/graphicsview/padnavigator/panel.cpp @@ -0,0 +1,238 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 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 "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); +} |