From d11f0b71ba8cae27aafc70fedf027f20180837e2 Mon Sep 17 00:00:00 2001 From: Michael Brasser Date: Wed, 4 Nov 2009 13:06:09 +1000 Subject: Rename QmlGraphicsPixmapCache to QmlPixmapCache. --- src/declarative/extra/qmlgraphicsparticles.cpp | 10 +- src/declarative/graphicsitems/graphicsitems.pri | 2 - .../graphicsitems/qmlgraphicsborderimage.cpp | 14 +- .../graphicsitems/qmlgraphicsimagebase.cpp | 10 +- .../graphicsitems/qmlgraphicspixmapcache.cpp | 282 -------------------- .../graphicsitems/qmlgraphicspixmapcache_p.h | 71 ------ .../graphicsitems/qmlgraphicsscalegrid_p_p.h | 2 +- src/declarative/util/qmlpixmapcache.cpp | 283 +++++++++++++++++++++ src/declarative/util/qmlpixmapcache_p.h | 71 ++++++ src/declarative/util/util.pri | 6 +- 10 files changed, 376 insertions(+), 375 deletions(-) delete mode 100644 src/declarative/graphicsitems/qmlgraphicspixmapcache.cpp delete mode 100644 src/declarative/graphicsitems/qmlgraphicspixmapcache_p.h create mode 100644 src/declarative/util/qmlpixmapcache.cpp create mode 100644 src/declarative/util/qmlpixmapcache_p.h diff --git a/src/declarative/extra/qmlgraphicsparticles.cpp b/src/declarative/extra/qmlgraphicsparticles.cpp index aba7e27..0349a4e 100644 --- a/src/declarative/extra/qmlgraphicsparticles.cpp +++ b/src/declarative/extra/qmlgraphicsparticles.cpp @@ -50,7 +50,7 @@ #ifndef INT_MAX #define INT_MAX 2147483647 #endif -#include +#include #include #include #include @@ -619,7 +619,7 @@ QmlGraphicsParticles::~QmlGraphicsParticles() { Q_D(QmlGraphicsParticles); if (d->pendingPixmapCache) - QmlGraphicsPixmapCache::cancelGet(d->url, this); + QmlPixmapCache::cancelGet(d->url, this); } /*! @@ -641,7 +641,7 @@ void QmlGraphicsParticles::imageLoaded() { Q_D(QmlGraphicsParticles); d->pendingPixmapCache = false; - QmlGraphicsPixmapCache::find(d->url, &d->image); + QmlPixmapCache::find(d->url, &d->image); d->paintItem->updateSize(); d->paintItem->update(); } @@ -654,7 +654,7 @@ void QmlGraphicsParticles::setSource(const QUrl &name) return; if (d->pendingPixmapCache) { - QmlGraphicsPixmapCache::cancelGet(d->url, this); + QmlPixmapCache::cancelGet(d->url, this); d->pendingPixmapCache = false; } if (name.isEmpty()) { @@ -665,7 +665,7 @@ void QmlGraphicsParticles::setSource(const QUrl &name) } else { d->url = name; Q_ASSERT(!name.isRelative()); - QNetworkReply *reply = QmlGraphicsPixmapCache::get(qmlEngine(this), d->url, &d->image); + QNetworkReply *reply = QmlPixmapCache::get(qmlEngine(this), d->url, &d->image); if (reply) { connect(reply, SIGNAL(finished()), this, SLOT(imageLoaded())); d->pendingPixmapCache = true; diff --git a/src/declarative/graphicsitems/graphicsitems.pri b/src/declarative/graphicsitems/graphicsitems.pri index 15d775c..cf71451 100644 --- a/src/declarative/graphicsitems/graphicsitems.pri +++ b/src/declarative/graphicsitems/graphicsitems.pri @@ -39,7 +39,6 @@ HEADERS += \ graphicsitems/qmlgraphicstextedit_p_p.h \ graphicsitems/qmlgraphicstext_p.h \ graphicsitems/qmlgraphicstext_p_p.h \ - graphicsitems/qmlgraphicspixmapcache_p.h \ graphicsitems/qmlgraphicsvisualitemmodel_p.h \ graphicsitems/qmlgraphicslistview_p.h \ graphicsitems/qmlgraphicsgraphicsobjectcontainer_p.h \ @@ -70,7 +69,6 @@ SOURCES += \ graphicsitems/qmlgraphicstextinput.cpp \ graphicsitems/qmlgraphicstext.cpp \ graphicsitems/qmlgraphicstextedit.cpp \ - graphicsitems/qmlgraphicspixmapcache.cpp \ graphicsitems/qmlgraphicsvisualitemmodel.cpp \ graphicsitems/qmlgraphicslistview.cpp \ graphicsitems/qmlgraphicsgraphicsobjectcontainer.cpp \ diff --git a/src/declarative/graphicsitems/qmlgraphicsborderimage.cpp b/src/declarative/graphicsitems/qmlgraphicsborderimage.cpp index ed39a2b..89bbe91 100644 --- a/src/declarative/graphicsitems/qmlgraphicsborderimage.cpp +++ b/src/declarative/graphicsitems/qmlgraphicsborderimage.cpp @@ -80,7 +80,7 @@ QmlGraphicsBorderImage::~QmlGraphicsBorderImage() if (d->sciReply) d->sciReply->deleteLater(); if (d->sciPendingPixmapCache) - QmlGraphicsPixmapCache::cancelGet(d->sciurl, this); + QmlPixmapCache::cancelGet(d->sciurl, this); } /*! \qmlproperty enum BorderImage::status @@ -160,11 +160,11 @@ void QmlGraphicsBorderImage::setSource(const QUrl &url) } if (d->pendingPixmapCache) { - QmlGraphicsPixmapCache::cancelGet(d->url, this); + QmlPixmapCache::cancelGet(d->url, this); d->pendingPixmapCache = false; } if (d->sciPendingPixmapCache) { - QmlGraphicsPixmapCache::cancelGet(d->sciurl, this); + QmlPixmapCache::cancelGet(d->sciurl, this); d->sciPendingPixmapCache = false; } @@ -203,7 +203,7 @@ void QmlGraphicsBorderImage::setSource(const QUrl &url) this, SLOT(sciRequestFinished())); } } else { - QNetworkReply *reply = QmlGraphicsPixmapCache::get(qmlEngine(this), d->url, &d->pix); + QNetworkReply *reply = QmlPixmapCache::get(qmlEngine(this), d->url, &d->pix); if (reply) { d->pendingPixmapCache = true; connect(reply, SIGNAL(finished()), this, SLOT(requestFinished())); @@ -320,7 +320,7 @@ void QmlGraphicsBorderImage::setGridScaledImage(const QmlGraphicsGridScaledImage d->verticalTileMode = sci.verticalTileRule(); d->sciurl = d->url.resolved(QUrl(sci.pixmapUrl())); - QNetworkReply *reply = QmlGraphicsPixmapCache::get(qmlEngine(this), d->sciurl, &d->pix); + QNetworkReply *reply = QmlPixmapCache::get(qmlEngine(this), d->sciurl, &d->pix); if (reply) { d->sciPendingPixmapCache = true; connect(reply, SIGNAL(finished()), this, SLOT(requestFinished())); @@ -348,10 +348,10 @@ void QmlGraphicsBorderImage::requestFinished() if (d->url.path().endsWith(QLatin1String(".sci"))) { d->sciPendingPixmapCache = false; - QmlGraphicsPixmapCache::find(d->sciurl, &d->pix); + QmlPixmapCache::find(d->sciurl, &d->pix); } else { d->pendingPixmapCache = false; - if (!QmlGraphicsPixmapCache::find(d->url, &d->pix)) + if (!QmlPixmapCache::find(d->url, &d->pix)) d->status = Error; } setImplicitWidth(d->pix.width()); diff --git a/src/declarative/graphicsitems/qmlgraphicsimagebase.cpp b/src/declarative/graphicsitems/qmlgraphicsimagebase.cpp index 283fb04..e86b53d 100644 --- a/src/declarative/graphicsitems/qmlgraphicsimagebase.cpp +++ b/src/declarative/graphicsitems/qmlgraphicsimagebase.cpp @@ -45,7 +45,7 @@ #include #include #include -#include +#include QT_BEGIN_NAMESPACE @@ -65,7 +65,7 @@ QmlGraphicsImageBase::~QmlGraphicsImageBase() { Q_D(QmlGraphicsImageBase); if (d->pendingPixmapCache) - QmlGraphicsPixmapCache::cancelGet(d->url, this); + QmlPixmapCache::cancelGet(d->url, this); } QmlGraphicsImageBase::Status QmlGraphicsImageBase::status() const @@ -95,7 +95,7 @@ void QmlGraphicsImageBase::setSource(const QUrl &url) return; if (d->pendingPixmapCache) { - QmlGraphicsPixmapCache::cancelGet(d->url, this); + QmlPixmapCache::cancelGet(d->url, this); d->pendingPixmapCache = false; } @@ -117,7 +117,7 @@ void QmlGraphicsImageBase::setSource(const QUrl &url) update(); } else { d->status = Loading; - QNetworkReply *reply = QmlGraphicsPixmapCache::get(qmlEngine(this), d->url, &d->pix); + QNetworkReply *reply = QmlPixmapCache::get(qmlEngine(this), d->url, &d->pix); if (reply) { d->pendingPixmapCache = true; connect(reply, SIGNAL(finished()), this, SLOT(requestFinished())); @@ -147,7 +147,7 @@ void QmlGraphicsImageBase::requestFinished() d->pendingPixmapCache = false; - if (!QmlGraphicsPixmapCache::find(d->url, &d->pix)) + if (!QmlPixmapCache::find(d->url, &d->pix)) d->status = Error; setImplicitWidth(d->pix.width()); setImplicitHeight(d->pix.height()); diff --git a/src/declarative/graphicsitems/qmlgraphicspixmapcache.cpp b/src/declarative/graphicsitems/qmlgraphicspixmapcache.cpp deleted file mode 100644 index fdf489c..0000000 --- a/src/declarative/graphicsitems/qmlgraphicspixmapcache.cpp +++ /dev/null @@ -1,282 +0,0 @@ -/**************************************************************************** -** -** 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 "qmlgraphicspixmapcache_p.h" -#include -#include -#include -#include -#include -#include -#include -#include - -QT_BEGIN_NAMESPACE -class QSharedNetworkReply; -typedef QHash QmlGraphicsSharedNetworkReplyHash; -static QmlGraphicsSharedNetworkReplyHash qfxActiveNetworkReplies; - -class QSharedNetworkReply -{ -public: - QSharedNetworkReply(QNetworkReply *r) : reply(r), refCount(1) {} - ~QSharedNetworkReply() - { - reply->deleteLater(); - } - QNetworkReply *reply; - QPixmap pixmap; // ensure reference to pixmap to QPixmapCache does not discard - - int refCount; - void addRef() - { - ++refCount; - } - void release() - { - Q_ASSERT(refCount > 0); - --refCount; - if (refCount == 0) { - QString key = reply->url().toString(); - qfxActiveNetworkReplies.remove(key); - delete this; - } - } -}; - -static bool readImage(QIODevice *dev, QPixmap *pixmap) - { - QImageReader imgio(dev); - -//#define QT_TEST_SCALED_SIZE -#ifdef QT_TEST_SCALED_SIZE - /* - Some mechanism is needed for loading images at a limited size, especially - for remote images. Loading only thumbnails of remote progressive JPEG - images can be efficient. (Qt jpeg handler does not do so currently) - */ - - QSize limit(60,60); - QSize sz = imgio.size(); - if (sz.width() > limit.width() || sz.height() > limit.height()) { - sz.scale(limit,Qt::KeepAspectRatio); - imgio.setScaledSize(sz); - } -#endif - - QImage img; - if (imgio.read(&img)) { -#ifdef QT_TEST_SCALED_SIZE - if (!sz.isValid()) - img = img.scaled(limit,Qt::KeepAspectRatio); -#endif - *pixmap = QPixmap::fromImage(img); - return true; - } else { - qWarning() << imgio.errorString(); - return false; - } - } - -/*! - \internal - \class QmlGraphicsPixmapCache - \brief Enacapsultes a pixmap for QmlGraphics items. - - This class is NOT reentrant. - */ - -static QString toLocalFileOrQrc(const QUrl& url) -{ - QString r = url.toLocalFile(); - if (r.isEmpty() && url.scheme() == QLatin1String("qrc")) - r = QLatin1Char(':') + url.path(); - return r; -} - -/*! - Finds the cached pixmap corresponding to \a url. - A previous call to get() must have requested the URL, - and the QNetworkReply must have finished before calling - this function. - - Returns true if the image was loaded without error. -*/ -bool QmlGraphicsPixmapCache::find(const QUrl& url, QPixmap *pixmap) -{ -#ifdef Q_ENABLE_PERFORMANCE_LOG - QmlPerfTimer perf; -#endif - - QString key = url.toString(); - bool ok = true; - if (!QPixmapCache::find(key,pixmap)) { -#ifndef QT_NO_LOCALFILE_OPTIMIZED_QML - QString lf = toLocalFileOrQrc(url); - if (!lf.isEmpty()) { - QFile f(lf); - if (f.open(QIODevice::ReadOnly)) { - if (!readImage(&f, pixmap)) { - qWarning() << "Format error loading" << url; - *pixmap = QPixmap(); - ok = false; - } - } else { - *pixmap = QPixmap(); - ok = false; - } - } else -#endif - { - QmlGraphicsSharedNetworkReplyHash::Iterator iter = qfxActiveNetworkReplies.find(key); - if (iter == qfxActiveNetworkReplies.end()) { - // API usage error - qWarning() << "QmlGraphicsPixmapCache: URL not loaded" << url; - ok = false; - } else { - if ((*iter)->reply->error()) { - qWarning() << "Network error loading" << url << (*iter)->reply->errorString(); - *pixmap = QPixmap(); - ok = false; - } else if (!readImage((*iter)->reply, pixmap)) { - qWarning() << "Format error loading" << url; - *pixmap = QPixmap(); - ok = false; - } else { - if ((*iter)->refCount > 1) - (*iter)->pixmap = *pixmap; - } - (*iter)->release(); - } - } - QPixmapCache::insert(key, *pixmap); - } else { - ok = !pixmap->isNull(); -#ifndef QT_NO_LOCALFILE_OPTIMIZED_QML - if (url.scheme()!=QLatin1String("file")) -#endif - // We may be the second finder. Still need to check for active replies. - { - QmlGraphicsSharedNetworkReplyHash::Iterator iter = qfxActiveNetworkReplies.find(key); - if (iter != qfxActiveNetworkReplies.end()) - (*iter)->release(); - } - } - return ok; -} - -/*! - Starts a network request to load \a url. - - Returns a QNetworkReply if the image is not immediately available, otherwise - returns 0. Caller should connect to QNetworkReply::finished() to then call - find() when the image is available. - - The returned QNetworkReply will be deleted when all get() calls are - matched by a corresponding find() call. -*/ -QNetworkReply *QmlGraphicsPixmapCache::get(QmlEngine *engine, const QUrl& url, QPixmap *pixmap) -{ -#ifndef QT_NO_LOCALFILE_OPTIMIZED_QML - QString lf = toLocalFileOrQrc(url); - if (!lf.isEmpty()) { - QString key = url.toString(); - if (!QPixmapCache::find(key,pixmap)) { - QFile f(lf); - if (f.open(QIODevice::ReadOnly)) { - if (!readImage(&f, pixmap)) { - qWarning() << "Format error loading" << url; - *pixmap = QPixmap(); - } - } else - *pixmap = QPixmap(); - QPixmapCache::insert(key, *pixmap); - } - return 0; - } -#endif - - QString key = url.toString(); - if (QPixmapCache::find(key,pixmap)) { - return 0; - } - - QmlGraphicsSharedNetworkReplyHash::Iterator iter = qfxActiveNetworkReplies.find(key); - if (iter == qfxActiveNetworkReplies.end()) { - QNetworkRequest req(url); - QSharedNetworkReply *item = new QSharedNetworkReply(engine->networkAccessManager()->get(req)); - iter = qfxActiveNetworkReplies.insert(key, item); - } else { - (*iter)->addRef(); - } - - return (*iter)->reply; -} - -/*! - Cancels a previous call to get(). - - May also cancel loading (eg. if no other pending request). - - Any connections from the QNetworkReply returned by get() to \a obj will be - disconnected. -*/ -void QmlGraphicsPixmapCache::cancelGet(const QUrl& url, QObject* obj) -{ - QString key = url.toString(); - QmlGraphicsSharedNetworkReplyHash::Iterator iter = qfxActiveNetworkReplies.find(key); - if (iter == qfxActiveNetworkReplies.end()) - return; - if (obj) - QObject::disconnect((*iter)->reply, 0, obj, 0); - (*iter)->release(); -} - -/*! - This function is mainly for test verification. It returns the number of - requests that are still unfinished. -*/ -int QmlGraphicsPixmapCache::pendingRequests() -{ - return qfxActiveNetworkReplies.count(); -} - -QT_END_NAMESPACE diff --git a/src/declarative/graphicsitems/qmlgraphicspixmapcache_p.h b/src/declarative/graphicsitems/qmlgraphicspixmapcache_p.h deleted file mode 100644 index 29de98d..0000000 --- a/src/declarative/graphicsitems/qmlgraphicspixmapcache_p.h +++ /dev/null @@ -1,71 +0,0 @@ -/**************************************************************************** -** -** 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. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QMLGRAPHICSPIXMAPCACHE_H -#define QMLGRAPHICSPIXMAPCACHE_H - -#include -#include -#include - -QT_BEGIN_HEADER - -QT_BEGIN_NAMESPACE - -QT_MODULE(Declarative) -class QmlEngine; -class QNetworkReply; -class Q_DECLARATIVE_EXPORT QmlGraphicsPixmapCache -{ -public: - static QNetworkReply *get(QmlEngine *, const QUrl& url, QPixmap *pixmap); - static void cancelGet(const QUrl& url, QObject* obj); - - static bool find(const QUrl& url, QPixmap *pixmap); // url must have been passed to QmlGraphicsPixmapCache::get, and any returned reply finished. - - static int pendingRequests(); // mainly for test verification -}; - -QT_END_NAMESPACE - -QT_END_HEADER - -#endif // QMLGRAPHICSPIXMAPCACHE_H diff --git a/src/declarative/graphicsitems/qmlgraphicsscalegrid_p_p.h b/src/declarative/graphicsitems/qmlgraphicsscalegrid_p_p.h index b66a5a5..d4ae0a6 100644 --- a/src/declarative/graphicsitems/qmlgraphicsscalegrid_p_p.h +++ b/src/declarative/graphicsitems/qmlgraphicsscalegrid_p_p.h @@ -44,7 +44,7 @@ #include #include -#include +#include #include #include "qmlgraphicsborderimage_p.h" diff --git a/src/declarative/util/qmlpixmapcache.cpp b/src/declarative/util/qmlpixmapcache.cpp new file mode 100644 index 0000000..f5904c0 --- /dev/null +++ b/src/declarative/util/qmlpixmapcache.cpp @@ -0,0 +1,283 @@ +/**************************************************************************** +** +** 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 "qmlpixmapcache_p.h" +#include +#include +#include +#include +#include +#include +#include +#include + +QT_BEGIN_NAMESPACE + +class QSharedNetworkReply; +typedef QHash QmlGraphicsSharedNetworkReplyHash; +static QmlGraphicsSharedNetworkReplyHash qfxActiveNetworkReplies; + +class QSharedNetworkReply +{ +public: + QSharedNetworkReply(QNetworkReply *r) : reply(r), refCount(1) {} + ~QSharedNetworkReply() + { + reply->deleteLater(); + } + QNetworkReply *reply; + QPixmap pixmap; // ensure reference to pixmap to QPixmapCache does not discard + + int refCount; + void addRef() + { + ++refCount; + } + void release() + { + Q_ASSERT(refCount > 0); + --refCount; + if (refCount == 0) { + QString key = reply->url().toString(); + qfxActiveNetworkReplies.remove(key); + delete this; + } + } +}; + +static bool readImage(QIODevice *dev, QPixmap *pixmap) + { + QImageReader imgio(dev); + +//#define QT_TEST_SCALED_SIZE +#ifdef QT_TEST_SCALED_SIZE + /* + Some mechanism is needed for loading images at a limited size, especially + for remote images. Loading only thumbnails of remote progressive JPEG + images can be efficient. (Qt jpeg handler does not do so currently) + */ + + QSize limit(60,60); + QSize sz = imgio.size(); + if (sz.width() > limit.width() || sz.height() > limit.height()) { + sz.scale(limit,Qt::KeepAspectRatio); + imgio.setScaledSize(sz); + } +#endif + + QImage img; + if (imgio.read(&img)) { +#ifdef QT_TEST_SCALED_SIZE + if (!sz.isValid()) + img = img.scaled(limit,Qt::KeepAspectRatio); +#endif + *pixmap = QPixmap::fromImage(img); + return true; + } else { + qWarning() << imgio.errorString(); + return false; + } + } + +/*! + \internal + \class QmlPixmapCache + \brief Enacapsultes a pixmap for QmlGraphics items. + + This class is NOT reentrant. + */ + +static QString toLocalFileOrQrc(const QUrl& url) +{ + QString r = url.toLocalFile(); + if (r.isEmpty() && url.scheme() == QLatin1String("qrc")) + r = QLatin1Char(':') + url.path(); + return r; +} + +/*! + Finds the cached pixmap corresponding to \a url. + A previous call to get() must have requested the URL, + and the QNetworkReply must have finished before calling + this function. + + Returns true if the image was loaded without error. +*/ +bool QmlPixmapCache::find(const QUrl& url, QPixmap *pixmap) +{ +#ifdef Q_ENABLE_PERFORMANCE_LOG + QmlPerfTimer perf; +#endif + + QString key = url.toString(); + bool ok = true; + if (!QPixmapCache::find(key,pixmap)) { +#ifndef QT_NO_LOCALFILE_OPTIMIZED_QML + QString lf = toLocalFileOrQrc(url); + if (!lf.isEmpty()) { + QFile f(lf); + if (f.open(QIODevice::ReadOnly)) { + if (!readImage(&f, pixmap)) { + qWarning() << "Format error loading" << url; + *pixmap = QPixmap(); + ok = false; + } + } else { + *pixmap = QPixmap(); + ok = false; + } + } else +#endif + { + QmlGraphicsSharedNetworkReplyHash::Iterator iter = qfxActiveNetworkReplies.find(key); + if (iter == qfxActiveNetworkReplies.end()) { + // API usage error + qWarning() << "QmlPixmapCache: URL not loaded" << url; + ok = false; + } else { + if ((*iter)->reply->error()) { + qWarning() << "Network error loading" << url << (*iter)->reply->errorString(); + *pixmap = QPixmap(); + ok = false; + } else if (!readImage((*iter)->reply, pixmap)) { + qWarning() << "Format error loading" << url; + *pixmap = QPixmap(); + ok = false; + } else { + if ((*iter)->refCount > 1) + (*iter)->pixmap = *pixmap; + } + (*iter)->release(); + } + } + QPixmapCache::insert(key, *pixmap); + } else { + ok = !pixmap->isNull(); +#ifndef QT_NO_LOCALFILE_OPTIMIZED_QML + if (url.scheme()!=QLatin1String("file")) +#endif + // We may be the second finder. Still need to check for active replies. + { + QmlGraphicsSharedNetworkReplyHash::Iterator iter = qfxActiveNetworkReplies.find(key); + if (iter != qfxActiveNetworkReplies.end()) + (*iter)->release(); + } + } + return ok; +} + +/*! + Starts a network request to load \a url. + + Returns a QNetworkReply if the image is not immediately available, otherwise + returns 0. Caller should connect to QNetworkReply::finished() to then call + find() when the image is available. + + The returned QNetworkReply will be deleted when all get() calls are + matched by a corresponding find() call. +*/ +QNetworkReply *QmlPixmapCache::get(QmlEngine *engine, const QUrl& url, QPixmap *pixmap) +{ +#ifndef QT_NO_LOCALFILE_OPTIMIZED_QML + QString lf = toLocalFileOrQrc(url); + if (!lf.isEmpty()) { + QString key = url.toString(); + if (!QPixmapCache::find(key,pixmap)) { + QFile f(lf); + if (f.open(QIODevice::ReadOnly)) { + if (!readImage(&f, pixmap)) { + qWarning() << "Format error loading" << url; + *pixmap = QPixmap(); + } + } else + *pixmap = QPixmap(); + QPixmapCache::insert(key, *pixmap); + } + return 0; + } +#endif + + QString key = url.toString(); + if (QPixmapCache::find(key,pixmap)) { + return 0; + } + + QmlGraphicsSharedNetworkReplyHash::Iterator iter = qfxActiveNetworkReplies.find(key); + if (iter == qfxActiveNetworkReplies.end()) { + QNetworkRequest req(url); + QSharedNetworkReply *item = new QSharedNetworkReply(engine->networkAccessManager()->get(req)); + iter = qfxActiveNetworkReplies.insert(key, item); + } else { + (*iter)->addRef(); + } + + return (*iter)->reply; +} + +/*! + Cancels a previous call to get(). + + May also cancel loading (eg. if no other pending request). + + Any connections from the QNetworkReply returned by get() to \a obj will be + disconnected. +*/ +void QmlPixmapCache::cancelGet(const QUrl& url, QObject* obj) +{ + QString key = url.toString(); + QmlGraphicsSharedNetworkReplyHash::Iterator iter = qfxActiveNetworkReplies.find(key); + if (iter == qfxActiveNetworkReplies.end()) + return; + if (obj) + QObject::disconnect((*iter)->reply, 0, obj, 0); + (*iter)->release(); +} + +/*! + This function is mainly for test verification. It returns the number of + requests that are still unfinished. +*/ +int QmlPixmapCache::pendingRequests() +{ + return qfxActiveNetworkReplies.count(); +} + +QT_END_NAMESPACE diff --git a/src/declarative/util/qmlpixmapcache_p.h b/src/declarative/util/qmlpixmapcache_p.h new file mode 100644 index 0000000..e6ed452 --- /dev/null +++ b/src/declarative/util/qmlpixmapcache_p.h @@ -0,0 +1,71 @@ +/**************************************************************************** +** +** 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. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QMLPIXMAPCACHE_H +#define QMLPIXMAPCACHE_H + +#include +#include +#include + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +QT_MODULE(Declarative) +class QmlEngine; +class QNetworkReply; +class Q_DECLARATIVE_EXPORT QmlPixmapCache +{ +public: + static QNetworkReply *get(QmlEngine *, const QUrl& url, QPixmap *pixmap); + static void cancelGet(const QUrl& url, QObject* obj); + + static bool find(const QUrl& url, QPixmap *pixmap); // url must have been passed to QmlPixmapCache::get, and any returned reply finished. + + static int pendingRequests(); // mainly for test verification +}; + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QMLPIXMAPCACHE_H diff --git a/src/declarative/util/util.pri b/src/declarative/util/util.pri index 87ccb58..f955ef6 100644 --- a/src/declarative/util/util.pri +++ b/src/declarative/util/util.pri @@ -20,7 +20,8 @@ SOURCES += \ util/qmltimeline.cpp \ util/qmltimer.cpp \ util/qmlbind.cpp \ - util/qmlpropertymap.cpp + util/qmlpropertymap.cpp \ + util/qmlpixmapcache.cpp HEADERS += \ util/qmlview.h \ @@ -47,4 +48,5 @@ HEADERS += \ util/qmltimeline_p_p.h \ util/qmltimer_p.h \ util/qmlbind_p.h \ - util/qmlpropertymap_p.h + util/qmlpropertymap_p.h \ + util/qmlpixmapcache_p.h -- cgit v0.12