qmlFrontend/previewimageprovider.cpp
author unc0rr
Tue, 11 Sep 2018 21:16:27 +0200
branchqmlfrontend
changeset 13777 5c0ea888c926
parent 10426 727a154cf784
permissions -rw-r--r--
Make rendering work
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#include "previewimageprovider.h"
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PreviewImageProvider::PreviewImageProvider()
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        : QQuickImageProvider(QQuickImageProvider::Pixmap)
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{
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}
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QPixmap PreviewImageProvider::requestPixmap(const QString &id, QSize *size, const QSize &requestedSize)
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{
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    Q_UNUSED(id);
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    Q_UNUSED(requestedSize);
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    if (size)
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        *size = m_px.size();
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    return m_px;
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}
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void PreviewImageProvider::setPixmap(const QByteArray &px)
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{
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    QVector<QRgb> colorTable;
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    colorTable.resize(256);
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    for(int i = 0; i < 256; ++i)
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        colorTable[i] = qRgba(255, 255, 0, i);
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    const quint8 *buf = (const quint8*) px.constData();
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    QImage im(buf, 256, 128, QImage::Format_Indexed8);
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    im.setColorTable(colorTable);
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    m_px = QPixmap::fromImage(im, Qt::ColorOnly);
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    //QPixmap pxres(px.size());
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    //QPainter p(&pxres);
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    //p.fillRect(pxres.rect(), linearGrad);
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    //p.drawPixmap(0, 0, px);
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}