void LensItem::updateEffect()
{
LensItem *item;
for (int a = 0; a < dialog->origPathItem.count(); a++)
{
QGraphicsPathItem* pItem = dialog->origPathItem[a];
QPainterPath path = dialog->origPath[a];
path = pItem->mapToScene(path);
for (int b = 0; b < dialog->lensList.count(); b++)
{
item = dialog->lensList[b];
path = lensDeform(path, item->mapToScene(item->rect().center()), item->rect().width() / 2.0, item->strength / 100.0);
}
path = pItem->mapFromScene(path);
pItem->setPath(path);
}
}
void PathDeformRenderer::paint(QPainter *painter)
{
int pad_x = 5;
int pad_y = 5;
int skip_x = qRound(m_pathBounds.width() + pad_x + m_fontSize/2);
int skip_y = qRound(m_pathBounds.height() + pad_y);
painter->setPen(Qt::NoPen);
painter->setBrush(Qt::black);
QRectF clip(painter->clipPath().boundingRect());
int overlap = pad_x / 2;
for (int start_y=0; start_y < height(); start_y += skip_y) {
if (start_y > clip.bottom())
break;
int start_x = -overlap;
for (; start_x < width(); start_x += skip_x) {
if (start_y + skip_y >= clip.top() &&
start_x + skip_x >= clip.left() &&
start_x <= clip.right()) {
for (int i=0; i<m_paths.size(); ++i) {
QPainterPath path = lensDeform(m_paths[i], QPointF(start_x, start_y));
painter->drawPath(path);
}
}
}
overlap = skip_x - (start_x - width());
}
if (preferImage()) {
painter->drawImage(m_pos - QPointF(m_radius + LENS_EXTENT, m_radius + LENS_EXTENT),
m_lens_image);
} else {
painter->drawPixmap(m_pos - QPointF(m_radius + LENS_EXTENT, m_radius + LENS_EXTENT),
m_lens_pixmap);
}
}
