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Diffstat (limited to 'src/declarative/graphicsitems/qmlgraphicsimagebase.cpp')
| -rw-r--r-- | src/declarative/graphicsitems/qmlgraphicsimagebase.cpp | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/declarative/graphicsitems/qmlgraphicsimagebase.cpp b/src/declarative/graphicsitems/qmlgraphicsimagebase.cpp new file mode 100644 index 0000000..08617ac --- /dev/null +++ b/src/declarative/graphicsitems/qmlgraphicsimagebase.cpp @@ -0,0 +1,191 @@ +/**************************************************************************** +** +** 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 QtDeclarative module 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 "qmlgraphicsimagebase_p.h" +#include "qmlgraphicsimagebase_p_p.h" + +#include <qmlengine.h> +#include <qmlpixmapcache_p.h> + +#include <QFile> + +QT_BEGIN_NAMESPACE + +QmlGraphicsImageBase::QmlGraphicsImageBase(QmlGraphicsImageBasePrivate &dd, QmlGraphicsItem *parent) + : QmlGraphicsItem(dd, parent) +{ + setFlag(QGraphicsItem::ItemHasNoContents, false); +} + +QmlGraphicsImageBase::~QmlGraphicsImageBase() +{ + Q_D(QmlGraphicsImageBase); + if (d->pendingPixmapCache) + QmlPixmapCache::cancel(d->url, this); +} + +QmlGraphicsImageBase::Status QmlGraphicsImageBase::status() const +{ + Q_D(const QmlGraphicsImageBase); + return d->status; +} + + +qreal QmlGraphicsImageBase::progress() const +{ + Q_D(const QmlGraphicsImageBase); + return d->progress; +} + +QUrl QmlGraphicsImageBase::source() const +{ + Q_D(const QmlGraphicsImageBase); + return d->url; +} + +void QmlGraphicsImageBase::setSource(const QUrl &url) +{ + Q_D(QmlGraphicsImageBase); + //equality is fairly expensive, so we bypass for simple, common case + if ((d->url.isEmpty() == url.isEmpty()) && url == d->url) + return; + + if (d->pendingPixmapCache) { + QmlPixmapCache::cancel(d->url, this); + d->pendingPixmapCache = false; + } + + d->url = url; + if (d->progress != 0.0) { + d->progress = 0.0; + emit progressChanged(d->progress); + } + + if (url.isEmpty()) { + d->pix = QPixmap(); + d->status = Null; + setImplicitWidth(0); + setImplicitHeight(0); + emit statusChanged(d->status); + emit sourceChanged(d->url); + emit pixmapChanged(); + update(); + } else { + d->status = Loading; + QmlPixmapReply::Status status = QmlPixmapCache::get(d->url, &d->pix); + if (status != QmlPixmapReply::Ready && status != QmlPixmapReply::Error) { + QmlPixmapReply *reply = QmlPixmapCache::request(qmlEngine(this), d->url); + d->pendingPixmapCache = true; + + static int replyDownloadProgress = -1; + static int replyFinished = -1; + static int thisRequestProgress = -1; + static int thisRequestFinished = -1; + if (replyDownloadProgress == -1) { + replyDownloadProgress = + QmlPixmapReply::staticMetaObject.indexOfSignal("downloadProgress(qint64,qint64)"); + replyFinished = + QmlPixmapReply::staticMetaObject.indexOfSignal("finished()"); + thisRequestProgress = + QmlGraphicsImageBase::staticMetaObject.indexOfSlot("requestProgress(qint64,qint64)"); + thisRequestFinished = + QmlGraphicsImageBase::staticMetaObject.indexOfSlot("requestFinished()"); + } + + QMetaObject::connect(reply, replyFinished, this, + thisRequestFinished, Qt::DirectConnection); + QMetaObject::connect(reply, replyDownloadProgress, this, + thisRequestProgress, Qt::DirectConnection); + } else { + //### should be unified with requestFinished + if (status == QmlPixmapReply::Ready) { + setImplicitWidth(d->pix.width()); + setImplicitHeight(d->pix.height()); + + if (d->status == Loading) + d->status = Ready; + } else { + d->status = Error; + } + d->progress = 1.0; + emit statusChanged(d->status); + emit sourceChanged(d->url); + emit progressChanged(d->progress); + emit pixmapChanged(); + update(); + } + } + + emit statusChanged(d->status); +} + +void QmlGraphicsImageBase::requestFinished() +{ + Q_D(QmlGraphicsImageBase); + + d->pendingPixmapCache = false; + + if (QmlPixmapCache::get(d->url, &d->pix) != QmlPixmapReply::Ready) + d->status = Error; + setImplicitWidth(d->pix.width()); + setImplicitHeight(d->pix.height()); + + if (d->status == Loading) + d->status = Ready; + d->progress = 1.0; + emit statusChanged(d->status); + emit sourceChanged(d->url); + emit progressChanged(1.0); + emit pixmapChanged(); + update(); +} + +void QmlGraphicsImageBase::requestProgress(qint64 received, qint64 total) +{ + Q_D(QmlGraphicsImageBase); + if (d->status == Loading && total > 0) { + d->progress = qreal(received)/total; + emit progressChanged(d->progress); + } +} + + +QT_END_NAMESPACE |