QBrush getPreloaderBrush()
{
QLinearGradient grad(0, 0, 0.5, 0);
grad.setCoordinateMode(QGradient::StretchToDeviceMode);
grad.setSpread(QGradient::ReflectSpread);
QColor colorEdge(ql1s("#000000"));
colorEdge.setAlphaF(0.07);
grad.setColorAt(0, colorEdge);
QColor colorCenter(ql1s("#000000"));
colorCenter.setAlphaF(0.12);
grad.setColorAt(0.5, colorCenter);
grad.setColorAt(1, colorEdge);
QBrush result(grad);
result.setColor(Qt::transparent);
return result;
}
void BFS::initializeAnimation(){
setMenu(false);
int r=255, g=255, b=0;
int color_step= 25;
m_operations.push_back([=,this](){ getNode(_currentNode)->setColor(QColor(r, g, b));colorNode(_currentNode); });
r-=color_step;
g-=color_step;
QQueue<int> queue;
queue.append(_currentNode);
getNode(_currentNode)->setVisited(true);
while(!queue.empty()){
int curr = queue.at(0);
queue.pop_front();
NodeList list = getNeighbours(curr);
for (auto iter : list){
if(!getNode(iter)->visited()){
getNode(iter)->setVisited(true);
m_operations.push_back([=,this](){getEdge(curr, iter)->setColor(QColor(r,g,b)); colorEdge(curr, iter); emit highlightLine(10);});
m_operations.push_back([=,this](){getNode(iter)->setColor(QColor(r,g,b)); colorNode(iter);});
queue.append(iter);
}
}
r-=color_step;
g-=color_step;
}
m_animationInitialized= true;
m_currentStepInAnimation= 0;
m_numberOfStepsInAnimation= m_operations.size();
}