1 #include "previewimageprovider.h"

     2 

     3 PreviewImageProvider::PreviewImageProvider()

     4     : QQuickImageProvider(QQuickImageProvider::Pixmap) {}

     5 

     6 QPixmap PreviewImageProvider::requestPixmap(const QString &id, QSize *size,

     7                                             const QSize &requestedSize) {

     8   Q_UNUSED(id);

     9   Q_UNUSED(requestedSize);

    10 

    11   if (size) *size = m_px.size();

    12 

    13   return m_px;

    14 }

    15 

    16 void PreviewImageProvider::setPixmap(const QByteArray &px) {

    17   QVector<QRgb> colorTable;

    18   colorTable.resize(256);

    19   for (int i = 0; i < 256; ++i) colorTable[i] = qRgba(255, 255, 0, i);

    20 

    21   const quint8 *buf = (const quint8 *)px.constData();

    22   QImage im(buf, 256, 128, QImage::Format_Indexed8);

    23   im.setColorTable(colorTable);

    24 

    25   m_px = QPixmap::fromImage(im, Qt::ColorOnly);

    26   // QPixmap pxres(px.size());

    27   // QPainter p(&pxres);

    28 

    29   // p.fillRect(pxres.rect(), linearGrad);

    30   // p.drawPixmap(0, 0, px);

    31 }