QIcon RColor::getIcon(const RColor& color, const QSize& size) {
init();
if (iconMap.contains(QPair<RColor, QPair<int, int> >(color, QPair<int, int>(size.width(), size.height())))) {
return iconMap[QPair<RColor, QPair<int, int> >(color, QPair<int, int>(size.width(), size.height()))];
}
RColor col = color;
if (color.isByLayer() || color.isByBlock() || /*color == RColor(Qt::black,
RColor::BlackWhite) ||*/ !color.isValid()) {
col = Qt::white;
}
QImage img(size, QImage::Format_ARGB32_Premultiplied);
img.fill(0);
QPainter painter(&img);
int w = img.width();
int h = img.height();
// painter.setCompositionMode(QPainter::CompositionMode_Source);
painter.fillRect(0, 0, w, h, col);
if (!color.isValid()) {
// icon for "Other colors..."
QLinearGradient grad(0, 0, w, 0);
grad.setColorAt(0, Qt::red);
grad.setColorAt(0.33, Qt::yellow);
grad.setColorAt(0.66, Qt::blue);
grad.setColorAt(1, Qt::green);
painter.fillRect(QRect(0, 0, w, h), grad);
} /*else if (color == RColor(Qt::black, RColor::BlackWhite) || color
== RColor(Qt::white, RColor::BlackWhite)) {
// icon for black / white
painter.setRenderHint(QPainter::Antialiasing);
QPainterPath path;
path.moveTo(0, 0);
path.lineTo(w, 0);
path.lineTo(w, h);
painter.fillPath(path, Qt::black);
painter.setRenderHint(QPainter::Antialiasing, false);
}*/ else if (col.alpha() != 255) {
// indicate alpha by an inset
QBrush opaqueBrush = col;
col.setAlpha(255);
opaqueBrush.setColor(col);
painter.fillRect(w / 4, h / 4, w / 2, h / 2, opaqueBrush);
}
painter.setPen(Qt::black);
painter.drawRect(0, 0, w - 1, h - 1);
painter.end();
QIcon ret(QPixmap::fromImage(img));
iconMap.insert(QPair<RColor, QPair<int, int> >(color, QPair<int, int>(size.width(), size.height())), ret);
return ret;
}
/**
* Stream operator for QDebug
*/
QDebug operator<<(QDebug dbg, const RColor& c) {
if (c.isValid()) {
if (c.isByLayer()) {
dbg.nospace() << "RColor(ByLayer)";
} else if (c.isByBlock()) {
dbg.nospace() << "RColor(ByBlock)";
} else {
dbg.nospace() << "RColor(RGBA: " << c.red() << ", " << c.green() << ", "
<< c.blue() << ", " << c.alpha() << ")";
}
} else {
dbg.nospace() << "RColor(invalid)";
}
return dbg.space();
}
/**
* \return Highlighted color for the given color.
*/
RColor RColor::getHighlighted(const RColor& color, const QColor& bgColor, int minDist) {
if (!color.isValid()) {
return Qt::gray;
}
RColor ret = color;
int vColor = color.value();
int vBgColor = bgColor.value();
// 0 vColor vBgColor 255
// |--------^----------------------------^------------------|
// |<--d1-->|<------------d2------------>|<-------d3------->|
int d1 = qMin(vColor, vBgColor);
//int d2 = qAbs(vColor - vBgColor);
int d3 = 255 - qMax(vColor, vBgColor);
// d3 is big enough: set value to max (highlight):
if (d3>=minDist) {
ret.setHsv(color.hue(), color.saturation(), 255);
}
// d1 is big enough: set value to half (lowlight):
else if (d1>=minDist) {
ret.setHsv(color.hue(), color.saturation(), qMin(vColor, vBgColor)/2);
}
// black on white:
else if (vColor<32 && vBgColor>224) {
ret.setHsv(color.hue(), color.saturation(), 160);
}
// d2 is the only significant distance, set value to medium:
else if (vColor<vBgColor) {
ret.setHsv(color.hue(), color.saturation(), qMin(vColor+minDist, 255));
}
else {
ret.setHsv(color.hue(), color.saturation(), qMax(vColor-minDist, 0));
}
return ret;
}
