static void
_cairo_qt_surface_set_clip_region (cairo_qt_surface_t *qs,
const cairo_region_t *clip_region)
{
_cairo_surface_clipper_reset (&qs->clipper);
if (clip_region == NULL) {
// How the clip path is reset depends on whether we own p or not
if (qs->pixmap || qs->image) {
// we own p
qs->p->setClipping (false);
} else {
qs->p->restore ();
qs->p->save ();
}
} else {
QRegion qr;
int num_rects = cairo_region_num_rectangles (clip_region);
for (int i = 0; i < num_rects; ++i) {
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (clip_region, i, &rect);
QRect r(rect.x, rect.y, rect.width, rect.height);
qr = qr.unite(r);
}
qs->p->setClipRegion (qr, Qt::IntersectClip);
}
}
static cairo_status_t
_cairo_qt_surface_finish (void *abstract_surface)
{
cairo_qt_surface_t *qs = (cairo_qt_surface_t *) abstract_surface;
D(fprintf(stderr, "q[%p] finish\n", abstract_surface));
/* Only delete p if we created it */
if (qs->image || qs->pixmap)
delete qs->p;
else
qs->p->restore ();
if (qs->image_equiv)
cairo_surface_destroy (qs->image_equiv);
_cairo_surface_clipper_reset (&qs->clipper);
if (qs->image)
delete qs->image;
if (qs->pixmap)
delete qs->pixmap;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_skia_surface_finish (void *asurface)
{
cairo_skia_surface_t *surface = (cairo_skia_surface_t *) asurface;
_cairo_surface_clipper_reset (&surface->clipper);
cairo_surface_destroy (&surface->_image_surface->base);
delete surface->canvas;
delete surface->bitmap;
return CAIRO_STATUS_SUCCESS;
}
static cairo_int_status_t
_cairo_qt_surface_set_clip (cairo_qt_surface_t *qs,
const cairo_clip_t *clip)
{
cairo_int_status_t status;
D(fprintf(stderr, "q[%p] intersect_clip_path %s\n", abstract_surface, path ? "(path)" : "(clear)"));
if (clip == NULL) {
_cairo_surface_clipper_reset (&qs->clipper);
// How the clip path is reset depends on whether we own p or not
if (qs->pixmap || qs->image) {
// we own p
qs->p->setClipping (false);
} else {
qs->p->restore ();
qs->p->save ();
}
return CAIRO_INT_STATUS_SUCCESS;
}
#if ENABLE_FAST_CLIP
// Qt will implicitly enable clipping, and will use ReplaceClip
// instead of IntersectClip if clipping was disabled before
// Note: Qt is really bad at dealing with clip paths. It doesn't
// seem to usefully recognize rectangular paths, instead going down
// extremely slow paths whenever a clip path is set. So,
// we do a bunch of work here to try to get rectangles or regions
// down to Qt for clipping.
cairo_region_t *clip_region = NULL;
status = _cairo_clip_get_region (clip, &clip_region);
if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
// We weren't able to extract a region from the traps.
// Just hand the path down to QPainter.
status = (cairo_int_status_t)
_cairo_surface_clipper_set_clip (&qs->clipper, clip);
} else if (status == CAIRO_INT_STATUS_SUCCESS) {
_cairo_qt_surface_set_clip_region (qs, clip_region);
status = CAIRO_INT_STATUS_SUCCESS;
}
#else
status = (cairo_int_status_t)
_cairo_surface_clipper_set_clip (&qs->clipper, clip);
#endif
return status;
}
