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Draft: Color picker cursor not restricted to bounds #29

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Draft: Color picker cursor not restricted to bounds #29

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80 changes: 65 additions & 15 deletions dependencies/ColorWheel/ColorWheel.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -222,21 +222,71 @@ void ColorWheel::mouseMoveEvent(QMouseEvent *event)
}
else
{
// TODO: due with cursor out of region after press
// int length = qMin(width(), height());
// QPoint center(length/2, length/2);
// int R = qSqrt(qPow(qAbs(lastPos.x()), 2)
// + qPow(qAbs(lastPos.y()), 2));
// if(inWheel){
// int r = length / 2;
// r += qSqrt(qPow(center.x(), 2) + qPow(center.y(), 2));
// int x0 = r/R * qAbs(lastPos.x());
// int y0 = r/R * qAbs(lastPos.y());
// QColor color = posColor(QPoint(x0, y0));
// hueChanged(color.hue());
// }else if(inSquare){
// //
// }
/*-----------------------------------------------------*\
| If mouse is outside of wheel region, set lastPos to |
| corresponding values inside the wheel region |
\*-----------------------------------------------------*/
if(inWheel)
{
QPoint center = wheelRegion.boundingRect().center();

int radius = center.x() - wheelRegion.boundingRect().bottomLeft().x();

int xInWheel = lastPos.x() - center.x();
int yInWheel = lastPos.y() - center.y();

int centerToMouse = sqrt
(
qPow((int)xInWheel, 2) +
qPow((int)yInWheel, 2)
+1 //the sqrt function causes a crash when it's 0, so +1 prevents this with no noticeable precision difference and no performance penalty
);

xInWheel = radius * xInWheel / centerToMouse;
yInWheel = radius * yInWheel / centerToMouse;

lastPos.setX(xInWheel + center.x());
lastPos.setY(yInWheel + center.y());

QColor color = posColor(lastPos);
hueChanged(color.hue());
}
else

/*-----------------------------------------------------*\
| If mouse is outside of square region, set lastPos to |
| corresponding values inside the square region |
\*-----------------------------------------------------*/
if(inSquare)
{

int xInSquare = lastPos.x() - squareRegion.boundingRect().bottomLeft().x();
int maxX = squareRegion.boundingRect().topRight().x() - squareRegion.boundingRect().bottomLeft().x();

int yInSquare = lastPos.y() - squareRegion.boundingRect().topRight().y();
int maxY = squareRegion.boundingRect().bottomLeft().y() - squareRegion.boundingRect().topRight().y();

if(xInSquare < 0)
{
lastPos.setX(squareRegion.boundingRect().bottomLeft().x());
}
else if(xInSquare >= maxX)
{
lastPos.setX(squareRegion.boundingRect().topRight().x());
}

if(yInSquare < 0)
{
lastPos.setY(squareRegion.boundingRect().topRight().y());
}
else if (yInSquare >= maxY)
{
lastPos.setY(squareRegion.boundingRect().bottomLeft().y());
}

QColor color = posColor(lastPos);
svChanged(color);
}
}
}

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