diff options
| -rw-r--r-- | examples/declarative/declarative.pro | 1 | ||||
| -rw-r--r-- | examples/declarative/proxyviewer/main.cpp | 109 | ||||
| -rw-r--r-- | examples/declarative/proxyviewer/proxyviewer.pro | 9 | ||||
| -rw-r--r-- | examples/declarative/proxyviewer/proxyviewer.qrc | 5 | ||||
| -rw-r--r-- | examples/declarative/proxyviewer/view.qml | 7 | ||||
| -rw-r--r-- | src/declarative/graphicsitems/qdeclarativeimage.cpp | 26 |
6 files changed, 157 insertions, 0 deletions
diff --git a/examples/declarative/declarative.pro b/examples/declarative/declarative.pro index e37c3d4..ba9b628 100644 --- a/examples/declarative/declarative.pro +++ b/examples/declarative/declarative.pro @@ -6,6 +6,7 @@ SUBDIRS = \ imageprovider \ objectlistmodel \ stringlistmodel \ + proxyviewer \ plugins \ proxywidgets diff --git a/examples/declarative/proxyviewer/main.cpp b/examples/declarative/proxyviewer/main.cpp new file mode 100644 index 0000000..b82d2c9 --- /dev/null +++ b/examples/declarative/proxyviewer/main.cpp @@ -0,0 +1,109 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the demonstration applications 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 <QApplication> +#include <QNetworkAccessManager> +#include <QNetworkProxy> + +#include <QDeclarativeEngine> +#include <QDeclarativeNetworkAccessManagerFactory> +#include <QDeclarativeView> + + +/* + This example illustrates using a QNetworkAccessManagerFactory to + create a QNetworkAccessManager with a proxy. + + Usage: + proxyviewer [-host <proxy> -port <port>] [file] +*/ + +static QString proxyHost; +static int proxyPort = 0; + +class MyNetworkAccessManagerFactory : public QDeclarativeNetworkAccessManagerFactory +{ +public: + virtual QNetworkAccessManager *create(QObject *parent); +}; + +QNetworkAccessManager *MyNetworkAccessManagerFactory::create(QObject *parent) +{ + QNetworkAccessManager *nam = new QNetworkAccessManager(parent); + if (!proxyHost.isEmpty()) { + qDebug() << "Created QNetworkAccessManager using proxy" << (proxyHost + ":" + QString::number(proxyPort)); + QNetworkProxy proxy(QNetworkProxy::HttpCachingProxy, proxyHost, proxyPort); + nam->setProxy(proxy); + } + + return nam; +} + +int main(int argc, char ** argv) +{ + QUrl source("qrc:view.qml"); + + QApplication app(argc, argv); + + for (int i = 1; i < argc; ++i) { + QString arg(argv[i]); + if (arg == "-host" && i < argc-1) { + proxyHost = argv[++i]; + } else if (arg == "-port" && i < argc-1) { + arg = argv[++i]; + proxyPort = arg.toInt(); + } else if (arg[0] != '-') { + source = QUrl::fromLocalFile(arg); + } else { + qWarning() << "Usage: proxyviewer [-host <proxy> -port <port>] [file]"; + exit(1); + } + } + + QDeclarativeView view; + view.engine()->setNetworkAccessManagerFactory(new MyNetworkAccessManagerFactory); + + view.setSource(source); + view.show(); + + return app.exec(); +} + diff --git a/examples/declarative/proxyviewer/proxyviewer.pro b/examples/declarative/proxyviewer/proxyviewer.pro new file mode 100644 index 0000000..b6bfa7f --- /dev/null +++ b/examples/declarative/proxyviewer/proxyviewer.pro @@ -0,0 +1,9 @@ +TEMPLATE = app +TARGET = proxyviewer +DEPENDPATH += . +INCLUDEPATH += . +QT += declarative network + +# Input +SOURCES += main.cpp +RESOURCES += proxyviewer.qrc diff --git a/examples/declarative/proxyviewer/proxyviewer.qrc b/examples/declarative/proxyviewer/proxyviewer.qrc new file mode 100644 index 0000000..17e9301 --- /dev/null +++ b/examples/declarative/proxyviewer/proxyviewer.qrc @@ -0,0 +1,5 @@ +<!DOCTYPE RCC><RCC version="1.0"> +<qresource> + <file>view.qml</file> +</qresource> +</RCC> diff --git a/examples/declarative/proxyviewer/view.qml b/examples/declarative/proxyviewer/view.qml new file mode 100644 index 0000000..7f1bdef --- /dev/null +++ b/examples/declarative/proxyviewer/view.qml @@ -0,0 +1,7 @@ +import Qt 4.7 + +Image { + width: 100 + height: 100 + source: "http://qt.nokia.com/logo.png" +} diff --git a/src/declarative/graphicsitems/qdeclarativeimage.cpp b/src/declarative/graphicsitems/qdeclarativeimage.cpp index e00a9fd..3937778 100644 --- a/src/declarative/graphicsitems/qdeclarativeimage.cpp +++ b/src/declarative/graphicsitems/qdeclarativeimage.cpp @@ -316,6 +316,32 @@ qreal QDeclarativeImage::paintedHeight() const If the source is a non-scalable image (eg. JPEG), the loaded image will be no greater than this property specifies. For some formats (currently only JPEG), the whole image will never actually be loaded into memory. + + The example below will ensure that the size of the image in memory is + no larger than 1024x1024 pixels, regardless of the size of the Image element. + + \code + Image { + anchors.fill: parent + source: "images/reallyBigImage.jpg" + sourceSize.width: 1024 + sourceSize.height: 1024 + } + \endcode + + The example below will ensure that the memory used by the image is + no more than necessary to display the image at the size of the Image element. + Of course if the Image element is resized a costly reload will be required, so + use this technique \e only when the Image size is fixed. + + \code + Image { + anchors.fill: parent + source: "images/reallyBigImage.jpg" + sourceSize.width: width + sourceSize.height: height + } + \endcode */ void QDeclarativeImage::updatePaintedGeometry() |