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/*
* Copyright (C) by Oleksandr Zolotov <alex@nextcloud.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include <QIcon>
#include <QPainter>
#include <QSvgRenderer>
#include "asyncimageresponse.h"
#include "usermodel.h"
AsyncImageResponse::AsyncImageResponse(const QString &id, const QSize &requestedSize)
{
if (id.isEmpty()) {
setImageAndEmitFinished();
return;
}
auto actualId = id;
const auto idSplit = id.split(QStringLiteral("/"), Qt::SkipEmptyParts);
const auto color = QColor(idSplit.last());
if(color.isValid()) {
_svgRecolor = color;
actualId.remove("/" % idSplit.last());
}
_imagePaths = actualId.split(QLatin1Char(';'), Qt::SkipEmptyParts);
_requestedImageSize = requestedSize;
if (_imagePaths.isEmpty()) {
setImageAndEmitFinished();
} else {
processNextImage();
}
}
void AsyncImageResponse::setImageAndEmitFinished(const QImage &image)
{
_image = image;
emit finished();
}
QQuickTextureFactory* AsyncImageResponse::textureFactory() const
{
return QQuickTextureFactory::textureFactoryForImage(_image);
}
void AsyncImageResponse::processNextImage()
{
if (_index < 0 || _index >= _imagePaths.size()) {
setImageAndEmitFinished();
return;
}
if (_imagePaths.at(_index).startsWith(QStringLiteral(":/client"))) {
setImageAndEmitFinished(QIcon(_imagePaths.at(_index)).pixmap(_requestedImageSize).toImage());
return;
}
const auto currentUser = OCC::UserModel::instance()->currentUser();
if (currentUser && currentUser->account()) {
const QUrl iconUrl(_imagePaths.at(_index));
if (iconUrl.isValid() && !iconUrl.scheme().isEmpty()) {
// fetch the remote resource
const auto reply = currentUser->account()->sendRawRequest(QByteArrayLiteral("GET"), iconUrl);
connect(reply, &QNetworkReply::finished, this, &AsyncImageResponse::slotProcessNetworkReply);
++_index;
return;
}
}
setImageAndEmitFinished();
}
void AsyncImageResponse::slotProcessNetworkReply()
{
const auto reply = qobject_cast<QNetworkReply *>(sender());
if (!reply) {
setImageAndEmitFinished();
return;
}
const QByteArray imageData = reply->readAll();
// server returns "[]" for some some file previews (have no idea why), so, we use another image
// from the list if available
if (imageData.isEmpty() || imageData == QByteArrayLiteral("[]")) {
processNextImage();
} else {
if (imageData.startsWith(QByteArrayLiteral("<svg"))) {
// SVG image needs proper scaling, let's do it with QPainter and QSvgRenderer
QSvgRenderer svgRenderer;
if (svgRenderer.load(imageData)) {
QImage scaledSvg(_requestedImageSize, QImage::Format_ARGB32);
scaledSvg.fill("transparent");
QPainter painterForSvg(&scaledSvg);
svgRenderer.render(&painterForSvg);
if(!_svgRecolor.isValid()) {
setImageAndEmitFinished(scaledSvg);
return;
}
QImage image(_requestedImageSize, QImage::Format_ARGB32);
image.fill(_svgRecolor);
QPainter imagePainter(&image);
imagePainter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
imagePainter.drawImage(0, 0, scaledSvg);
setImageAndEmitFinished(image);
return;
} else {
processNextImage();
}
} else {
setImageAndEmitFinished(QImage::fromData(imageData));
}
}
}
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