diff options
Diffstat (limited to 'parallaxhome/parallaxhome.cpp')
| -rw-r--r-- | parallaxhome/parallaxhome.cpp | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/parallaxhome/parallaxhome.cpp b/parallaxhome/parallaxhome.cpp new file mode 100644 index 0000000..26c7d34 --- /dev/null +++ b/parallaxhome/parallaxhome.cpp @@ -0,0 +1,301 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the Graphics Dojo project on Qt Labs. +** +** This file may be used under the terms of the GNU General Public +** License version 2.0 or 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 GNU +** General Public Licensing requirements will be met: +** http://www.fsf.org/licensing/licenses/info/GPLv2.html and +** 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. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +****************************************************************************/ + +#include <QtCore> +#include <QtGui> +#include <QtSvg> + +#if defined (Q_OS_SYMBIAN) +#include "sym_iap_util.h" +#include <eikenv.h> +#include <eikappui.h> +#include <aknenv.h> +#include <aknappui.h> +#endif + +#define PAGE_COUNT 5 + +class NaviBar : public QObject, public QGraphicsRectItem +{ + Q_OBJECT + +public: + NaviBar(); + + void setPageOffset(qreal ofs); + +signals: + void pageSelected(int page); + +protected: + void mousePressEvent(QGraphicsSceneMouseEvent *event); + void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0); + +private: + QList<QGraphicsSvgItem*> m_icons; + QGraphicsRectItem *m_cursor; +}; + +#define ICON_SIZE 50 +#define ICON_PAD 4 + +NaviBar::NaviBar() + : QGraphicsRectItem() +{ + setRect(0, 0, 5 * ICON_SIZE, ICON_SIZE); + setPen(Qt::NoPen); + + QStringList names; + names << "map" << "web" << "home" << "weather" << "contacts"; + for (int i = 0; i < names.count(); ++i) { + QString fname = names[i]; + fname.prepend(":/icons/"); + fname.append("-page.svg"); + QGraphicsSvgItem *icon = new QGraphicsSvgItem(fname); + icon->setParentItem(this); + const int dim = ICON_SIZE - ICON_PAD * 2; + qreal sw = dim / icon->boundingRect().width(); + qreal sh = dim / icon->boundingRect().height(); + icon->setTransform(QTransform().scale(sw, sh)); + icon->setZValue(2); + m_icons << icon; + } + + m_cursor = new QGraphicsRectItem; + m_cursor->setParentItem(this); + m_cursor->setRect(0, 0, ICON_SIZE, ICON_SIZE); + m_cursor->setZValue(1); + m_cursor->setPen(Qt::NoPen); + m_cursor->setBrush(QColor(Qt::white)); + m_cursor->setOpacity(0.6); +} + +void NaviBar::setPageOffset(qreal ofs) +{ + m_cursor->setPos(ofs * ICON_SIZE, 0); + for (int i = 0; i < m_icons.count(); ++i) { + int y = (i == static_cast<int>(ofs + 0.5)) ? ICON_PAD : ICON_PAD * 2; + m_icons[i]->setPos(i * ICON_SIZE + ICON_PAD, y); + m_icons[i]->setOpacity(1); + } +} + +void NaviBar::mousePressEvent(QGraphicsSceneMouseEvent *event) +{ + emit pageSelected(static_cast<int>(event->pos().x() / ICON_SIZE)); +} + + +void NaviBar::paint(QPainter * painter, const QStyleOptionGraphicsItem *option, QWidget *widget) +{ + painter->setBrush(Qt::white); + painter->setOpacity(0.2); + painter->drawRect(option->rect.adjusted(-20, ICON_PAD, 20, 0)); +} + + +class ParallaxHome: public QGraphicsView +{ + Q_OBJECT + +public: + QGraphicsScene m_scene; + NaviBar *m_naviBar; + QGraphicsPixmapItem *m_wallpaper; + QTimeLine m_pageAnimator; + qreal m_pageOffset; + QList<QGraphicsPixmapItem*> m_items; + QList<QPointF> m_positions; + +public: + ParallaxHome(QWidget *parent = 0) + : QGraphicsView(parent) + , m_pageOffset(-2) { + + setupScene(); + setScene(&m_scene); + setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); + setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); + setFrameShape(QFrame::NoFrame); + setWindowTitle("Parallax Home"); + + connect(&m_pageAnimator, SIGNAL(frameChanged(int)), SLOT(shiftPage(int))); + m_pageAnimator.setDuration(500); + m_pageAnimator.setFrameRange(0, 100); + m_pageAnimator.setCurveShape(QTimeLine::EaseInCurve); + + pageChanged(static_cast<int>(m_pageOffset)); + } + +signals: + void pageChanged(int page); + +public slots: + + void slideRight() { + if (m_pageAnimator.state() != QTimeLine::NotRunning) + return; + int edge = -(m_pageOffset - 1); + if (edge < PAGE_COUNT) + slideBy(-1); + } + + void slideLeft() { + if (m_pageAnimator.state() != QTimeLine::NotRunning) + return; + if (m_pageOffset < 0) + slideBy(1); + } + + void slideBy(int dx) { + int start = m_pageOffset * 1000; + int end = (m_pageOffset + dx) * 1000; + m_pageAnimator.setFrameRange(start, end); + m_pageAnimator.start(); + } + + void choosePage(int page) { + if (m_pageAnimator.state() != QTimeLine::NotRunning) + return; + if (static_cast<int>(-m_pageOffset) == page) + return; + slideBy(-page - m_pageOffset); + } + +private slots: + + void shiftPage(int frame) { + + int ww = width(); + int hh = height() - m_naviBar->rect().height(); + + int oldPage = static_cast<int>(-m_pageOffset); + m_pageOffset = static_cast<qreal>(frame) / qreal(1000); + int newPage = static_cast<int>(-m_pageOffset); + m_naviBar->setPageOffset(-m_pageOffset); + if (oldPage != newPage) + emit pageChanged(newPage); + + int ofs = m_pageOffset * ww; + for (int i = 0; i < m_items.count(); ++i) { + QPointF pos = m_positions[i]; + QPointF xy(pos.x() * ww, pos.y() * hh); + m_items[i]->setPos(xy + QPointF(ofs, 0)); + } + + int center = m_wallpaper->pixmap().width() / 2; + const int parallax = 3; + int base = center - (ww / 2) - (PAGE_COUNT >> 1) * (ww / parallax); + int wofs = base - m_pageOffset * ww / parallax; + m_wallpaper->setPos(-wofs, 0); + } + +protected: + + void resizeEvent(QResizeEvent *event) { + Q_UNUSED(event); + layoutScene(); + } + + void keyPressEvent(QKeyEvent *event) { + if (event->key() == Qt::Key_Right) + slideRight(); + if (event->key() == Qt::Key_Left) + slideLeft(); + event->accept(); + } + +private: + + void layoutScene() { + + + int ww = width(); + int hh = height(); + + m_scene.setSceneRect(0, 0, PAGE_COUNT * ww - 1, hh - 1); + centerOn(ww / 2, hh / 2); + + int nw = m_naviBar->rect().width(); + int nh = m_naviBar->rect().height(); + m_naviBar->setPos((ww - nw) / 2, hh - nh); + + shiftPage(m_pageOffset * 1000); + } + + void setupScene() { + + qsrand(QTime::currentTime().second()); + + QStringList names; + names << "brownies" << "cookies" << "mussels" << "pizza" << "sushi"; + names << "chocolate" << "fish" << "pasta" << "puding" << "trouts"; + + for (int i = 0; i < PAGE_COUNT * 2; ++i) { + QString fname = names[i]; + fname.prepend(":/images/"); + fname.append(".jpg"); + QPixmap pixmap(fname); + pixmap = pixmap.scaledToWidth(200); + QGraphicsPixmapItem *item = m_scene.addPixmap(pixmap); + m_items << item; + + qreal x = (i >> 1) + (qrand() % 30) / 100.0; + qreal y = (i & 1) / 2.0 + (qrand() % 20) / 100.0; + m_positions << QPointF(x, y); + item->setZValue(1); + } + + m_naviBar = new NaviBar; + m_scene.addItem(m_naviBar); + m_naviBar->setZValue(2); + connect(m_naviBar, SIGNAL(pageSelected(int)), SLOT(choosePage(int))); + + m_wallpaper = m_scene.addPixmap(QPixmap(":/icons/surfacing.png")); + m_wallpaper->setZValue(0); + + m_scene.setItemIndexMethod(QGraphicsScene::NoIndex); + } + +}; + +#include "parallaxhome.moc" + +int main(int argc, char *argv[]) +{ + QApplication app(argc, argv); + + ParallaxHome w; +#if defined(Q_OS_SYMBIAN) + w.showMaximized(); + // lock orientation + CAknAppUi* appUi = dynamic_cast<CAknAppUi*>(CEikonEnv::Static()->AppUi()); + if (appUi) + appUi->SetOrientationL(CAknAppUi::EAppUiOrientationPortrait); +#else + w.resize(360, 504); + w.show(); +#endif + + return app.exec(); +} |