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Make blurhash provider async

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This commit is contained in:
Nicolas Werner 2020-03-04 01:56:58 +01:00
parent 5ac18f1f5f
commit b894ce4dcd
4 changed files with 69 additions and 20 deletions
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35
src/BlurhashProvider.cpp
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@ -6,24 +6,33 @@
#include "blurhash.hpp"
QImage
BlurhashProvider::requestImage(const QString &id, QSize *size, const QSize &requestedSize)
void
BlurhashResponse::run()
{
QSize sz = requestedSize;
if (sz.width() < 1 || sz.height() < 1)
return QImage();
if (m_requestedSize.width() < 0 || m_requestedSize.height() < 0) {
m_error = QStringLiteral("Blurhash needs size request");
emit finished();
return;
}
if (m_requestedSize.width() == 0 || m_requestedSize.height() == 0) {
m_image = QImage(m_requestedSize, QImage::Format_RGB32);
m_image.fill(QColor(0, 0, 0));
emit finished();
return;
}
if (size)
*size = sz;
auto decoded = blurhash::decode(
QUrl::fromPercentEncoding(id.toUtf8()).toStdString(), sz.width(), sz.height(), 4);
auto decoded = blurhash::decode(QUrl::fromPercentEncoding(m_id.toUtf8()).toStdString(),
m_requestedSize.width(),
m_requestedSize.height(),
4);
if (decoded.image.empty()) {
*size = QSize();
return QImage();
m_error = QStringLiteral("Failed decode!");
emit finished();
return;
}
QImage image(decoded.image.data(), decoded.width, decoded.height, QImage::Format_RGB32);
return image.copy();
m_image = image.copy();
emit finished();
}