KDE_NO_EXPORT void Surface::repaint (const SRect &rect) {
Matrix matrix;
IRect clip;
clipToScreen (this, matrix, clip);
IRect scr = matrix.toScreen (rect);
clip = clip.intersect (scr);
if (!clip.isEmpty ())
view_widget->scheduleRepaint (clip);
}
static void clipToScreen (Surface *s, Matrix &m, IRect &clip) {
Surface *ps = s->parentNode ();
if (!ps) {
clip = IRect (s->bounds.x (), s->bounds.y (),
s->bounds.width (), s->bounds.height ());
m = Matrix (s->bounds.x (), s->bounds.y (), s->xscale, s->yscale);
} else {
clipToScreen (ps, m, clip);
IRect scr = m.toScreen (s->bounds);
clip = clip.intersect (scr);
Matrix m1 = m;
m = Matrix (s->bounds.x (), s->bounds.y (), s->xscale, s->yscale);
m.transform (m1);
if (!s->virtual_size.isEmpty ())
m.translate (-s->x_scroll, -s->y_scroll);
}
}