60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
// Copyright (C) 2017 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include <qqmlextensionplugin.h>
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#include <qqmlengine.h>
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#include <qquickimageprovider.h>
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#include <QImage>
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#include <QPainter>
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class ColorImageProvider : public QQuickImageProvider
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{
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public:
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ColorImageProvider()
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: QQuickImageProvider(QQuickImageProvider::Pixmap)
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{
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}
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QPixmap requestPixmap(const QString &id, QSize *size, const QSize &requestedSize) override
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{
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int width = 100;
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int height = 50;
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if (size)
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*size = QSize(width, height);
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QPixmap pixmap(requestedSize.width() > 0 ? requestedSize.width() : width,
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requestedSize.height() > 0 ? requestedSize.height() : height);
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pixmap.fill(QColor(id).rgba());
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// write the color name
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QPainter painter(&pixmap);
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QFont f = painter.font();
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f.setPixelSize(20);
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painter.setFont(f);
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painter.setPen(Qt::black);
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if (requestedSize.isValid())
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painter.scale(requestedSize.width() / width, requestedSize.height() / height);
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painter.drawText(QRectF(0, 0, width, height), Qt::AlignCenter, id);
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return pixmap;
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}
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};
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class ImageProviderExtensionPlugin : public QQmlEngineExtensionPlugin
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{
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Q_OBJECT
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Q_PLUGIN_METADATA(IID QQmlEngineExtensionInterface_iid)
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public:
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void initializeEngine(QQmlEngine *engine, const char *uri) override
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{
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Q_UNUSED(uri);
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engine->addImageProvider("colors", new ColorImageProvider);
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}
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};
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#include "imageprovider.moc"
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