void KoXYColorSelector::drawContents( QPainter *painter )
{
KoColor c = m_colors[0]; // quick way to set the colorspace
QColor color;
const quint8 *colors[4];
colors[0] = m_colors[0].data();
colors[1] = m_colors[1].data();
colors[2] = m_colors[2].data();
colors[3] = m_colors[3].data();
QRect contentsRect_(contentsRect());
QImage image(contentsRect_.width(), contentsRect_.height(), QImage::Format_ARGB32 );
KoMixColorsOp * mixOp = m_colorSpace->mixColorsOp();
for (int x = 0; x < contentsRect_.width(); x++)
for (int y = 0; y < contentsRect_.height(); y++){
qreal xVal = static_cast<qreal>(x) / (contentsRect_.width() - 1);
qreal yVal = static_cast<qreal>(y) / (contentsRect_.height() - 1);
qint16 colorWeights[4];
colorWeights[0] = static_cast<quint8>((1.0 - yVal) * (1.0 - xVal) * 255 + 0.5);
colorWeights[1] = static_cast<quint8>((1.0 - yVal) * (xVal) * 255 + 0.5);
colorWeights[2] = static_cast<quint8>((yVal) * (1.0 - xVal) * 255 + 0.5);
colorWeights[3] = static_cast<quint8>((yVal) * (xVal) * 255 + 0.5);
mixOp->mixColors(colors, colorWeights, 4, c.data());
c.toQColor( &color);
image.setPixel(x, y, color.rgba());
}
painter->drawImage( contentsRect_, image, QRect( 0, 0, image.width(), image.height()) );
}
void KoColorSlider::drawContents( QPainter *painter )
{
QPixmap checker(8, 8);
QPainter p(&checker);
p.fillRect(0, 0, 4, 4, Qt::lightGray);
p.fillRect(4, 0, 4, 4, Qt::darkGray);
p.fillRect(0, 4, 4, 4, Qt::darkGray);
p.fillRect(4, 4, 4, 4, Qt::lightGray);
p.end();
QRect contentsRect_(contentsRect());
painter->fillRect(contentsRect_, QBrush(checker));
if( !d->upToDate || d->pixmap.isNull() || d->pixmap.width() != contentsRect_.width()
|| d->pixmap.height() != contentsRect_.height() )
{
KoColor c = d->minColor; // smart way to fetch colorspace
QColor color;
const quint8 *colors[2];
colors[0] = d->minColor.data();
colors[1] = d->maxColor.data();
KoMixColorsOp * mixOp = c.colorSpace()->mixColorsOp();
QImage image(contentsRect_.width(), contentsRect_.height(), QImage::Format_ARGB32 );
if( orientation() == Qt::Horizontal ) {
for (int x = 0; x < contentsRect_.width(); x++) {
qreal t = static_cast<qreal>(x) / (contentsRect_.width() - 1);
qint16 colorWeights[2];
colorWeights[0] = static_cast<quint8>((1.0 - t) * 255 + 0.5);
colorWeights[1] = 255 - colorWeights[0];
mixOp->mixColors(colors, colorWeights, 2, c.data());
c.toQColor(&color);
for (int y = 0; y < contentsRect_.height(); y++)
image.setPixel(x, y, color.rgba());
}
}
else {
for (int y = 0; y < contentsRect_.height(); y++) {
qreal t = static_cast<qreal>(y) / (contentsRect_.height() - 1);
qint16 colorWeights[2];
colorWeights[0] = static_cast<quint8>((t) * 255 + 0.5);
colorWeights[1] = 255 - colorWeights[0];
mixOp->mixColors(colors, colorWeights, 2, c.data());
c.toQColor(&color);
for (int x = 0; x < contentsRect_.width(); x++)
image.setPixel(x, y, color.rgba());
}
}
d->pixmap = QPixmap::fromImage(image);
d->upToDate = true;
}
painter->drawPixmap( contentsRect_, d->pixmap, QRect( 0, 0, d->pixmap.width(), d->pixmap.height()) );
}
