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CanvasToolListen::CanvasToolListen(Canvas *c, Player &p)
: player(p)
{
lastpos = pos = 0;
canvas = c ;
}
bool CanvasToolListen::mousePressEvent(QMouseEvent *event)
{
if(!isActive()) return false;
player.setPosition(canvas->unmapX(event->x()));
canvas->update();
connect(&player, SIGNAL(positionUpdate(size_t)), this, SLOT(update(size_t)));
return true;
}
bool CanvasToolListen::mouseReleaseEvent(QMouseEvent *event)
{
if(!isActive()) return false;
player.stop();
disconnect(&player, SIGNAL(positionUpdate(size_t)),
this, SLOT(update(size_t)));
lastpos = 0;
canvas->update();
return true;
}
void CanvasToolListen::paintEvent(QPaintEvent *event, QPainter &painter)
{
if(!isActive()) return;
if(player.pos < player.end) {
painter.setPen(QColor(0, 127, 127));
painter.drawLine(canvas->mapX(pos),
event->rect().y(),
canvas->mapX(pos),
event->rect().y() + event->rect().height());
}
}
void CanvasToolListen::update(size_t pos)
{
this->pos = pos;
size_t last = canvas->mapX(lastpos);
size_t x = canvas->mapX(player.pos);
QRect r(last, 0,
x - last + 2, canvas->height());
canvas->update(r);
lastpos = pos;
}
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