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Diffstat (limited to 'examples/declarative/cppextensions/imageprovider')
5 files changed, 186 insertions, 0 deletions
diff --git a/examples/declarative/cppextensions/imageprovider/ImageProviderCore/qmldir b/examples/declarative/cppextensions/imageprovider/ImageProviderCore/qmldir new file mode 100644 index 0000000..1028590 --- /dev/null +++ b/examples/declarative/cppextensions/imageprovider/ImageProviderCore/qmldir @@ -0,0 +1,2 @@ +plugin imageprovider + diff --git a/examples/declarative/cppextensions/imageprovider/imageprovider-example.qml b/examples/declarative/cppextensions/imageprovider/imageprovider-example.qml new file mode 100644 index 0000000..d774112 --- /dev/null +++ b/examples/declarative/cppextensions/imageprovider/imageprovider-example.qml @@ -0,0 +1,25 @@ +import Qt 4.7 +import "ImageProviderCore" +//![0] +ListView { + width: 100; height: 100 + anchors.fill: parent + + model: myModel + + delegate: Component { + Item { + width: 100 + height: 50 + Text { + text: "Loading..." + anchors.centerIn: parent + } + Image { + source: modelData + sourceSize: "50x25" + } + } + } +} +//![0] diff --git a/examples/declarative/cppextensions/imageprovider/imageprovider.cpp b/examples/declarative/cppextensions/imageprovider/imageprovider.cpp new file mode 100644 index 0000000..4c4aa94 --- /dev/null +++ b/examples/declarative/cppextensions/imageprovider/imageprovider.cpp @@ -0,0 +1,118 @@ +/**************************************************************************** +** +** 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 <qdeclarativeextensionplugin.h> + +#include <qdeclarativeengine.h> +#include <qdeclarativecontext.h> +#include <qdeclarative.h> +#include <qdeclarativeitem.h> +#include <qdeclarativeimageprovider.h> +#include <qdeclarativeview.h> +#include <QImage> +#include <QPainter> + +/* + This example illustrates using a QDeclarativeImageProvider to serve + images asynchronously. +*/ + +//![0] +class ColorImageProvider : public QDeclarativeImageProvider +{ +public: + // This is run in a low priority thread. + QImage request(const QString &id, QSize *size, const QSize &req_size) + { + if (size) *size = QSize(100,50); + QImage image( + req_size.width() > 0 ? req_size.width() : 100, + req_size.height() > 0 ? req_size.height() : 50, + QImage::Format_RGB32); + image.fill(QColor(id).rgba()); + QPainter p(&image); + QFont f = p.font(); + f.setPixelSize(30); + p.setFont(f); + p.setPen(Qt::black); + if (req_size.isValid()) + p.scale(req_size.width()/100.0, req_size.height()/50.0); + p.drawText(QRectF(0,0,100,50),Qt::AlignCenter,id); + return image; + } +}; + + +class ImageProviderExtensionPlugin : public QDeclarativeExtensionPlugin +{ + Q_OBJECT +public: + void registerTypes(const char *uri) { + Q_UNUSED(uri); + + } + + void initializeEngine(QDeclarativeEngine *engine, const char *uri) { + Q_UNUSED(uri); + + engine->addImageProvider("colors", new ColorImageProvider); + + QStringList dataList; + dataList.append("image://colors/red"); + dataList.append("image://colors/green"); + dataList.append("image://colors/blue"); + dataList.append("image://colors/brown"); + dataList.append("image://colors/orange"); + dataList.append("image://colors/purple"); + dataList.append("image://colors/yellow"); + + QDeclarativeContext *ctxt = engine->rootContext(); + ctxt->setContextProperty("myModel", QVariant::fromValue(dataList)); + } + +}; + +#include "imageprovider.moc" + +Q_EXPORT_PLUGIN(ImageProviderExtensionPlugin); +//![0] + diff --git a/examples/declarative/cppextensions/imageprovider/imageprovider.pro b/examples/declarative/cppextensions/imageprovider/imageprovider.pro new file mode 100644 index 0000000..945a301 --- /dev/null +++ b/examples/declarative/cppextensions/imageprovider/imageprovider.pro @@ -0,0 +1,25 @@ +TEMPLATE = lib +TARGET = imageprovider +QT += declarative +CONFIG += qt plugin + +TARGET = $$qtLibraryTarget($$TARGET) +DESTDIR = ImageProviderCore + +# Input +SOURCES += imageprovider.cpp + +sources.files = $$SOURCES imageprovider.qml imageprovider.pro +sources.path = $$[QT_INSTALL_EXAMPLES]/declarative/imageprovider + +target.path = $$[QT_INSTALL_EXAMPLES]/declarative/imageprovider/ImageProviderCore + +ImageProviderCore_sources.files = \ + ImageProviderCore/qmldir +ImageProviderCore_sources.path = $$[QT_INSTALL_EXAMPLES]/declarative/imageprovider/ImageProviderCore + +symbian:{ + TARGET.EPOCALLOWDLLDATA=1 +} + +INSTALLS = sources ImageProviderCore_sources target diff --git a/examples/declarative/cppextensions/imageprovider/imageprovider.qmlproject b/examples/declarative/cppextensions/imageprovider/imageprovider.qmlproject new file mode 100644 index 0000000..d4909f8 --- /dev/null +++ b/examples/declarative/cppextensions/imageprovider/imageprovider.qmlproject @@ -0,0 +1,16 @@ +import QmlProject 1.0 + +Project { + /* Include .qml, .js, and image files from current directory and subdirectories */ + QmlFiles { + directory: "." + } + JavaScriptFiles { + directory: "." + } + ImageFiles { + directory: "." + } + /* List of plugin directories passed to QML runtime */ + // importPaths: [ " ../exampleplugin " ] +} |