File indexing completed on 2024-04-21 03:56:27

0001 /*
0002     SPDX-FileCopyrightText: 2009 Canonical
0003     SPDX-FileContributor: Aurélien Gâteau <aurelien.gateau@canonical.com>
0004 
0005     SPDX-License-Identifier: LGPL-2.0-only OR LGPL-3.0-only
0006 */
0007 
0008 #include "imageconverter.h"
0009 
0010 #include <QDBusArgument>
0011 #include <QDBusMetaType>
0012 #include <QImage>
0013 
0014 namespace ImageConverter
0015 {
0016 /**
0017  * A structure representing an image which can be marshalled to fit the
0018  * notification spec.
0019  */
0020 struct SpecImage {
0021     int width, height, rowStride;
0022     bool hasAlpha;
0023     int bitsPerSample, channels;
0024     QByteArray data;
0025 };
0026 
0027 QDBusArgument &operator<<(QDBusArgument &argument, const SpecImage &image)
0028 {
0029     argument.beginStructure();
0030     argument << image.width << image.height << image.rowStride << image.hasAlpha;
0031     argument << image.bitsPerSample << image.channels << image.data;
0032     argument.endStructure();
0033     return argument;
0034 }
0035 
0036 const QDBusArgument &operator>>(const QDBusArgument &argument, SpecImage &image)
0037 {
0038     argument.beginStructure();
0039     argument >> image.width >> image.height >> image.rowStride >> image.hasAlpha;
0040     argument >> image.bitsPerSample >> image.channels >> image.data;
0041     argument.endStructure();
0042     return argument;
0043 }
0044 
0045 } // namespace
0046 
0047 // This must be before the QVariant::fromValue below (#211726)
0048 Q_DECLARE_METATYPE(ImageConverter::SpecImage)
0049 
0050 namespace ImageConverter
0051 {
0052 QVariant variantForImage(const QImage &_image)
0053 {
0054     qDBusRegisterMetaType<SpecImage>();
0055 
0056     const bool hasAlpha = _image.hasAlphaChannel();
0057     QImage image;
0058     if (hasAlpha) {
0059         image = _image.convertToFormat(QImage::Format_RGBA8888);
0060     } else {
0061         image = _image.convertToFormat(QImage::Format_RGB888);
0062     }
0063 
0064     QByteArray data((const char *)image.constBits(), image.sizeInBytes());
0065 
0066     SpecImage specImage;
0067     specImage.width = image.width();
0068     specImage.height = image.height();
0069     specImage.rowStride = image.bytesPerLine();
0070     specImage.hasAlpha = hasAlpha;
0071     specImage.bitsPerSample = 8;
0072     specImage.channels = hasAlpha ? 4 : 3;
0073     specImage.data = data;
0074 
0075     return QVariant::fromValue(specImage);
0076 }
0077 
0078 } // namespace