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Diffstat (limited to 'examples/animation/photobrowser/river.cpp')
| -rw-r--r-- | examples/animation/photobrowser/river.cpp | 561 |
1 files changed, 0 insertions, 561 deletions
diff --git a/examples/animation/photobrowser/river.cpp b/examples/animation/photobrowser/river.cpp deleted file mode 100644 index f3dd0746..0000000 --- a/examples/animation/photobrowser/river.cpp +++ /dev/null @@ -1,561 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). -** Contact: Qt Software Information (qt-info@nokia.com) -** -** This file is part of the $MODULE$ of the Qt Toolkit. -** -** $TROLLTECH_DUAL_LICENSE$ -** -****************************************************************************/ - -#include "river.h" -#include "riveritem.h" - -#include "qvariantanimation.h" - -#include <QtCore/QDebug> -#include <QtGui/QKeyEvent> -#include <QtGui/QGraphicsScene> -#include <QtGui/QPainter> - - -#define GRID_ROW_COUNT 3 -#define GRID_COLUMN_COUNT 2 -#define GRID_DIMENSIONS (GRID_ROW_COUNT * GRID_COLUMN_COUNT) -#define ITEM_COUNT 12 - -#define RIVER_MAGNIFY(ITEM) (qreal(0.50) + (ITEM)->zValue()*2 ) -#define GRID_MAGNIFY qreal(1.5) -#define GRID_CURRENT_MAGNIFY 2 - -River::River(const QString &path) : -m_images(QDir(path).entryInfoList(QStringList() << QLatin1String("*.jpg") << QLatin1String("*.png"))), -m_currentImage(0), m_mode(RiverMode), m_selectedItem(-1) , m_topLeftIndex(-1) -{ - setFocusPolicy(Qt::StrongFocus); - setGeometry(QRectF( QPointF(), fixedSize())); - - - for (int i = 0; i < ITEM_COUNT; ++i) { - RiverItem * item = new RiverItem(this); - - //here we also randomize the x position (not when looping) - const int x = qrand() % fixedSize().width(); - item->setPos(x, -1); - - m_items.insert(m_currentImage, item); - addUnusedRiverItem(item); - } - -} - -QPointF River::gridItemPosition(int row, int col) const -{ - if (col < 0) { - col += GRID_COLUMN_COUNT; - row --; - } - return QPointF(rect().width()*(col*2 + 1)/(GRID_COLUMN_COUNT*2), - rect().height()*(row*2 + 1)/(GRID_ROW_COUNT*2)); -} - -QPixmap River::pixmap(int index) const -{ - if (index < 0 || index >= m_images.size()) - return QPixmap(); - - if (m_pixmaps.size() <= index) { - m_pixmaps.resize(index+1); - } - - if (m_pixmaps.at(index).isNull()) { - m_pixmaps[index] = QPixmap(m_images.at(index).absoluteFilePath()); - } - - return m_pixmaps.at(index); -} - -void River::addUnusedRiverItem(RiverItem * item) -{ - if (m_images.isEmpty()) - return; - - QRectF realItemRect = item->mapToParent(item->boundingRect()).boundingRect(); - - int y = item->pos().y(); - int x = item->pos().x(); - if (x >= fixedSize().width() || x < -realItemRect.width() || y < 0) { - //we set the new pixmap - - m_items.remove(m_items.key(item)); - - while (m_items.contains(m_currentImage)) - m_currentImage = (m_currentImage + 1 ) % m_images.size(); - - item->setPixmap(pixmap(m_currentImage)); - - m_items.insert(m_currentImage, item); - //this manages looping as well - m_currentImage = (m_currentImage + 1 ) % m_images.size(); - - item->setZValue(qreal(qrand()%100)/200.0); - - QItemAnimation *anim = new QItemAnimation(item, QItemAnimation::ScaleFactorX, scene()); - anim->setEndValue(RIVER_MAGNIFY(item)); - anim->start(QAbstractAnimation::DeleteWhenStopped); - anim = new QItemAnimation(item, QItemAnimation::ScaleFactorY, scene()); - anim->setEndValue(RIVER_MAGNIFY(item)); - anim->start(QAbstractAnimation::DeleteWhenStopped); - - realItemRect = item->mapToParent(item->boundingRect()).boundingRect(); - - y = -realItemRect.y() + qrand() % (fixedSize().height() - int(realItemRect.height())); - if (x >= fixedSize().width()) { - x = -realItemRect.width()/2; - } - } - - item->setPos(x, y); - - const QPointF target(QPointF(fixedSize().width() + realItemRect.width()/2, y)); - - const int distance = target.x() - x; - - const int duration = (40 - 50*item->zValue() ) * distance; - QItemAnimation *a = new QItemAnimation(item, QItemAnimation::Position, scene()); - a->setEndValue(target); - a->setDuration(duration); - a->start(QAbstractAnimation::DeleteWhenStopped); - connect(a, SIGNAL(finished()), SLOT(animationFinished())); -} - -void River::animationFinished() -{ - QItemAnimation *anim = qobject_cast<QItemAnimation*>(sender()); - if (!anim || anim->propertyName() != QItemAnimation::Position) - return; - - /*RiverItem *item = static_cast<RiverItem*>(anim->graphicsItem()); - if (m_mode != RiverMode) {*/ - /*int key = m_items.key(item); - if (key < m_topLeftIndex || key >= m_topLeftIndex + GRID_DIMENSIONS) { - delete item; - m_items.remove(key); - }*/ - //return; - - //} - - addUnusedRiverItem(static_cast<RiverItem*>(anim->targetItem())); -} - -void River::switchPaused() -{ - const bool paused = m_pausedAnimations.isEmpty(); - if (paused) - m_pausedAnimations = scene()->findChildren<QItemAnimation*>(); - - foreach(QItemAnimation *anim, m_pausedAnimations) { - if (paused) - anim->pause(); - else - anim->resume(); - } - - if (!paused) - m_pausedAnimations.clear(); -} - -void River::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *) -{ - painter->fillRect(option->rect, Qt::black); -} - -void River::setMode(Mode m) -{ - if (m_mode == m) - return; - - Mode oldMode = m_mode; - m_mode = m; - switch(m) - { - case RiverMode: - m_mode = oldMode; //some animation may be stopt, and we don't want that animationFinished we were in that mode yet - foreach (RiverItem *item, m_items) { - const int x = qrand() % fixedSize().width(); - const int y = qrand() % fixedSize().width(); - QItemAnimation *anim = new QItemAnimation(item, QItemAnimation::ScaleFactorX, scene()); - anim->setEndValue(RIVER_MAGNIFY(item)); - anim->start(QAbstractAnimation::DeleteWhenStopped); - anim = new QItemAnimation(item, QItemAnimation::ScaleFactorY, scene()); - anim->setEndValue(RIVER_MAGNIFY(item)); - anim->start(QAbstractAnimation::DeleteWhenStopped); - anim = new QItemAnimation(item, QItemAnimation::Position, scene()); - anim->setEndValue(QPointF(x, y)); - anim->start(QAbstractAnimation::DeleteWhenStopped); - connect(anim, SIGNAL(finished()), SLOT(animationFinished())); - } - m_mode = m; - break; - - case GridMode: - - if (oldMode == GridFullScreenMode) { - currentItem()->setFullScreen(false, GRID_CURRENT_MAGNIFY); - } else { - m_topLeftIndex = -GRID_DIMENSIONS; - foreach (RiverItem *item, m_items) { - QItemAnimation *anim = new QItemAnimation(item, QItemAnimation::ScaleFactorX, scene()); - anim->setEndValue(GRID_MAGNIFY); - anim->start(QAbstractAnimation::DeleteWhenStopped); - anim = new QItemAnimation(item, QItemAnimation::ScaleFactorY, scene()); - anim->setEndValue(GRID_MAGNIFY); - anim->start(QAbstractAnimation::DeleteWhenStopped); - } - adjustGrid(m_currentImage - GRID_DIMENSIONS + 1); - setCurrentItem(m_topLeftIndex); - } - break; - case GridFullScreenMode: - //let's put the current item fullscreen - currentItem()->setFullScreen(true, GRID_CURRENT_MAGNIFY); - break; - case CoverMode: - m_gridItem = m_items.values(); - setCurrentItem(m_gridItem.count()/2); - default: - break; - } -} - -River::Mode River::mode() const -{ - return m_mode; -} - -QSize River::fixedSize() -{ - return QSize(352, 416); -} - -//the name of this method is not that good... -void River::makeCenterAvailable(qreal size) -{ - QRectF center(QPointF(), QSizeF(size, size)); - center.moveCenter(rect().center()); - - const QList<QGraphicsItem*> list = scene()->items(center); - - foreach(QGraphicsItem *item, m_items) { - - if (!list.contains(item)) - continue; - - QPointF pos = item->pos(); - - if (pos.y() < rect().center().y()) { - //item is above center - pos.ry() = center.top() - item->boundingRect().height() - 1; - } else { - //item is below the center - pos.ry() = center.bottom() + 1; - } - QItemAnimation *anim = new QItemAnimation(item, QItemAnimation::Position, scene()); - anim->setEndValue(pos); - anim->setDuration(150); - anim->start(QAbstractAnimation::DeleteWhenStopped); - } -} - - -//this is there just to test small interaction -void River::keyPressEvent ( QKeyEvent * keyEvent ) -{ - switch(keyEvent->key()) - { - case Qt::Key_O: - { - QItemAnimation *anim = new QItemAnimation(this, QItemAnimation::Opacity, scene()); - anim->setDuration(2000); - anim->setEndValue(qreal(.5)); - anim->start(QAbstractAnimation::DeleteWhenStopped); - } - break; - case Qt::Key_N: - //that's a test - makeCenterAvailable(60); - break; - case Qt::Key_P: - switchPaused(); - break; - case Qt::Key_V: - setMode(GridMode); - break; - case Qt::Key_R: - setMode(RiverMode); - break; - case Qt::Key_C: - setMode(CoverMode); - break; - case Qt::Key_Return: - case Qt::Key_Enter: - if (m_mode == RiverMode) { - setMode(GridMode); - } else if (m_mode == GridMode) { - setMode(GridFullScreenMode); - } else if (m_mode == GridFullScreenMode) { - setMode(GridMode); - } - break; - case Qt::Key_Escape: - if (m_mode == GridFullScreenMode) { - setMode(GridMode); - } else if (m_mode == GridMode || m_mode == CoverMode) { - setMode(RiverMode); - } else if (m_mode == RiverMode) { - menu->show(); - } - break; - case Qt::Key_Right: - if (m_mode == GridMode) { - navigateBy(+1); - } else if (m_mode == CoverMode) { - setCurrentItem(m_selectedItem + 1); - } - break; - case Qt::Key_Left: - if (m_mode == GridMode) { - navigateBy(-1); - } else if (m_mode == CoverMode) { - setCurrentItem(m_selectedItem - 1); - } - break; - case Qt::Key_Down: - if (m_mode == GridMode) { - navigateBy(GRID_COLUMN_COUNT); - } - break; - case Qt::Key_Up: - if (m_mode == GridMode) { - navigateBy(-GRID_COLUMN_COUNT); - } - break; -// case Qt::Key_PageUp: - case Qt::Key_M: - menu->show(); - break; - case Qt::Key_Space: - if (m_mode == GridMode) { - RiverItem *item = currentItem(); - if(!item) - break; - - //stupid sequence. - QPointF pos = item->pos(); - QAnimationGroup *group = new QSequentialAnimationGroup(); - //item->animator()->beginSequence(); - - QItemAnimation *anim = new QItemAnimation(item, QItemAnimation::Position, scene()); - anim->setEndValue(pos); - group->addAnimation(anim); - anim = new QItemAnimation(item, QItemAnimation::ScaleFactorX, scene()); - anim->setEndValue(qreal(1.)); - anim->setDuration(500); - group->addAnimation(anim); - anim = new QItemAnimation(item, QItemAnimation::ScaleFactorY, scene()); - anim->setEndValue(qreal(1.)); - anim->setDuration(500); - group->addAnimation(anim); - anim = new QItemAnimation(item, QItemAnimation::RotationX, scene()); - anim->setEndValue(qreal(0)); - group->addAnimation(anim); - group->start(QAbstractAnimation::DeleteWhenStopped); - } - default: - break; - } - - QGraphicsItem::keyPressEvent(keyEvent); -} - - -void River::setGridMode() -{ - setMode(GridMode); -} - -void River::setRiverMode() -{ - setMode(RiverMode); -} - -void River::setCoverMode() -{ - setMode(CoverMode); -} - - -void River::adjustGrid(int newTopLeft) -{ - for (int i = newTopLeft ; i < newTopLeft + GRID_DIMENSIONS; i++) { - if (!m_items.contains(i)) { - RiverItem *item = createItem(i); - int row = (i - m_topLeftIndex) / GRID_COLUMN_COUNT; - int col = (i - m_topLeftIndex) % GRID_COLUMN_COUNT; - item->setPos(gridItemPosition(row, col)); - item->setXScale(0); - item->setYScale(0); - QItemAnimation *anim = new QItemAnimation(item, QItemAnimation::ScaleFactorX, scene()); - anim->setEndValue(GRID_MAGNIFY); - anim->start(QAbstractAnimation::DeleteWhenStopped); - anim = new QItemAnimation(item, QItemAnimation::ScaleFactorY, scene()); - anim->setEndValue(GRID_MAGNIFY); - anim->start(QAbstractAnimation::DeleteWhenStopped); - } - } - newTopLeft = newTopLeft - newTopLeft % GRID_COLUMN_COUNT; - - QHash<int, RiverItem *>::iterator it = m_items.begin(); - while (it != m_items.constEnd()) { - const int imageIdx = it.key(); - RiverItem *item = *it; - QSizeF itemSize = item->boundingRect().size(); - if ((imageIdx >= newTopLeft && imageIdx < newTopLeft + GRID_DIMENSIONS) - || boundingRect().adjusted(-itemSize.width()/2, -itemSize.height()/2, itemSize.width()/2, itemSize.height()/2) - .contains(item->pos())) { - int row = (imageIdx-newTopLeft) / GRID_COLUMN_COUNT; - int col = (imageIdx-newTopLeft) % GRID_COLUMN_COUNT; - QItemAnimation *anim = new QItemAnimation(item, QItemAnimation::Position, scene()); - anim->setEndValue(gridItemPosition(row, col)); - anim->start(QAbstractAnimation::DeleteWhenStopped); - ++it; - } else { - ++it; /* ### ideally we should remove the items, but this cause the photobrowser to crash - because the QItemAnimations are not notified the item is deleted - delete item; - it = m_items.erase(it); - */ - } - } - - m_topLeftIndex = newTopLeft; -} - - -RiverItem *River::createItem(int imageIndex) -{ - Q_ASSERT(!m_items.contains(imageIndex)); - RiverItem * item = new RiverItem(this); - item->setPixmap(pixmap(imageIndex)); - m_items.insert(imageIndex,item); - return item; -} - -void River::setCurrentItem(int newCurrentItem) -{ - if (m_mode == CoverMode) - { - m_selectedItem = newCurrentItem; - for (int i = 0; i < m_gridItem.count(); i++) { - QVariantAnimation *anim; - RiverItem *item = m_gridItem.at(i); - - qreal rotation = 0; - qreal width = boundingRect().width() / 2; - qreal x = width; - qreal scale = 3; - qreal z = 1; - qreal y = boundingRect().height()/2; - - if (i < newCurrentItem - 4) { - item->setVisible(false); - item->setPos(QPointF(0, y)); - continue; - } else if(i > newCurrentItem + 4) { - item->setVisible(false); - item->setPos(QPointF(boundingRect().width(), y)); - continue; - } else if (i < newCurrentItem) { - x = (i - newCurrentItem + 4) * width/7; - rotation = -75; - scale = 2; - z = 1.+qreal(i-newCurrentItem)/10.; - } else if (i > newCurrentItem) { - x = width + (i - newCurrentItem + 3) * width/7; - rotation = 75; - scale = 2; - z = 1.-qreal(i-newCurrentItem)/8.; - } - - item->setVisible(true); - item->setZValue(z); - - anim = new QItemAnimation(item, QItemAnimation::RotationY, scene()); - anim->setEndValue(rotation); - anim->start(QAbstractAnimation::DeleteWhenStopped); - - anim = new QItemAnimation(item, QItemAnimation::ScaleFactorX, scene()); - anim->setEndValue(scale); - anim->start(QVariantAnimation::DeleteWhenStopped); - - anim = new QItemAnimation(item, QItemAnimation::ScaleFactorY, scene()); - anim->setEndValue(scale); - anim->start(QVariantAnimation::DeleteWhenStopped); - - anim = new QItemAnimation(item, QItemAnimation::Position, scene()); - anim->setEndValue(QPointF(x,y)); - anim->start(QVariantAnimation::DeleteWhenStopped); - } - return; - } - - - //deselect the current item - if (m_selectedItem >= 0 && m_items.contains(m_selectedItem)) { - RiverItem *item = m_items.value(m_selectedItem); - item->setZValue(qreal(qrand()%100)/200.0); - QItemAnimation *anim = new QItemAnimation(item, QItemAnimation::ScaleFactorX, scene()); - anim->setEndValue(GRID_MAGNIFY); - anim->start(QAbstractAnimation::DeleteWhenStopped); - anim = new QItemAnimation(item, QItemAnimation::ScaleFactorY, scene()); - anim->setEndValue(GRID_MAGNIFY); - anim->start(QAbstractAnimation::DeleteWhenStopped); - } - - if (newCurrentItem < 0) { - m_selectedItem = newCurrentItem; - return; - } - - //ensure visible; - if (newCurrentItem < m_topLeftIndex) { - adjustGrid(newCurrentItem); - } else if (newCurrentItem >= m_topLeftIndex + GRID_DIMENSIONS) { - adjustGrid(newCurrentItem - GRID_DIMENSIONS + GRID_COLUMN_COUNT); - } - - //select the new one - m_selectedItem = newCurrentItem; - RiverItem *item = currentItem(); - Q_ASSERT(item); - item->setZValue(1); - - QItemAnimation *anim = new QItemAnimation(item, QItemAnimation::ScaleFactorX, scene()); - anim->setEndValue(GRID_CURRENT_MAGNIFY); - anim->start(QAbstractAnimation::DeleteWhenStopped); - anim = new QItemAnimation(item, QItemAnimation::ScaleFactorY, scene()); - anim->setEndValue(GRID_CURRENT_MAGNIFY); - anim->start(QAbstractAnimation::DeleteWhenStopped); -} - -void River::navigateBy(int offset) -{ - int newSelection = m_selectedItem + offset; - const int imageCount = m_images.size(); - while (newSelection < 0) - newSelection += imageCount; - newSelection %= imageCount; - setCurrentItem(newSelection); -} |