/**
* Computes a point on the offset; used to set a "seed" position for
* the control knot.
*
* \return the topmost point on the offset.
*/
void
sp_offset_top_point (SPOffset const * offset, Geom::Point *px)
{
(*px) = Geom::Point(0, 0);
if (offset == NULL) {
return;
}
if (offset->knotSet)
{
(*px) = offset->knot;
return;
}
SPCurve *curve = SP_SHAPE (offset)->getCurve();
if (curve == NULL)
{
// CPPIFY
//offset->set_shape();
const_cast<SPOffset*>(offset)->set_shape();
curve = SP_SHAPE (offset)->getCurve();
if (curve == NULL)
return;
}
if (curve->is_empty())
{
curve->unref();
return;
}
Path *finalPath = new Path;
finalPath->LoadPathVector(curve->get_pathvector());
Shape *theShape = new Shape;
finalPath->Convert (1.0);
finalPath->Fill (theShape, 0);
if (theShape->hasPoints())
{
theShape->SortPoints ();
*px = theShape->getPoint(0).x;
}
delete theShape;
delete finalPath;
curve->unref();
}
static void
refresh_offset_source(SPOffset* offset)
{
if ( offset == NULL ) {
return;
}
offset->sourceDirty=false;
// le mauvais cas: pas d'attribut d => il faut verifier que c'est une SPShape puis prendre le contour
// The bad case: no d attribute. Must check that it's an SPShape and then take the outline.
SPObject *refobj=offset->sourceObject;
if ( refobj == NULL ) {
return;
}
SPItem *item = SP_ITEM (refobj);
SPCurve *curve = NULL;
if (SP_IS_SHAPE (item)) {
curve = SP_SHAPE (item)->getCurve ();
}
else if (SP_IS_TEXT (item)) {
curve = SP_TEXT (item)->getNormalizedBpath ();
}
else {
return;
}
if (curve == NULL) {
return;
}
Path *orig = new Path;
orig->LoadPathVector(curve->get_pathvector());
curve->unref();
if (!item->transform.isIdentity()) {
gchar const *t_attr = item->getRepr()->attribute("transform");
if (t_attr) {
Geom::Affine t;
if (sp_svg_transform_read(t_attr, &t)) {
orig->Transform(t);
}
}
}
// Finish up.
{
SPCSSAttr *css;
const gchar *val;
Shape *theShape = new Shape;
Shape *theRes = new Shape;
orig->ConvertWithBackData (1.0);
orig->Fill (theShape, 0);
css = sp_repr_css_attr (offset->sourceRepr , "style");
val = sp_repr_css_property (css, "fill-rule", NULL);
if (val && strcmp (val, "nonzero") == 0)
{
theRes->ConvertToShape (theShape, fill_nonZero);
}
else if (val && strcmp (val, "evenodd") == 0)
{
theRes->ConvertToShape (theShape, fill_oddEven);
}
else
{
theRes->ConvertToShape (theShape, fill_nonZero);
}
Path *originaux[1];
originaux[0] = orig;
Path *res = new Path;
theRes->ConvertToForme (res, 1, originaux);
delete theShape;
delete theRes;
char *res_d = res->svg_dump_path ();
delete res;
delete orig;
// TODO fix:
//XML Tree being used diectly here while it shouldn't be.
offset->getRepr()->setAttribute("inkscape:original", res_d);
free (res_d);
}
}