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diff --git a/src/object-snapper.cpp b/src/object-snapper.cpp
index 6552cea969379d561c9fc3b7401af6056e6124ac..a904bd93baa52505d016819338abeb3fb531cd31 100644 (file)
--- a/src/object-snapper.cpp
+++ b/src/object-snapper.cpp
* Authors:
* Carl Hetherington <inkscape@carlh.net>
*
- * Copyright (C) 2005 Authors
+ * Copyright (C) 2005 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "document.h"
#include "sp-namedview.h"
#include "sp-path.h"
+#include "sp-image.h"
+#include "sp-item-group.h"
+#include "sp-item.h"
+#include "sp-use.h"
#include "display/curve.h"
#include "desktop.h"
#include "inkscape.h"
Inkscape::ObjectSnapper::ObjectSnapper(SPNamedView const *nv, NR::Coord const d)
: Snapper(nv, d), _snap_to_nodes(true), _snap_to_paths(true)
{
-
+
}
std::list<SPItem const *> const &it,
NR::Point const &p) const
{
- for (SPObject* o = r->children; o != NULL; o = o->next) {
- if (SP_IS_ITEM(o)) {
-
- /* See if this item is on the ignore list */
- std::list<SPItem const *>::const_iterator i = it.begin();
- while (i != it.end() && *i != o) {
- i++;
- }
-
- if (i == it.end()) {
- /* See if the item is within range */
- NR::Rect const b = NR::expand(sp_item_bbox_desktop(SP_ITEM(o)), -getDistance());
- if (b.contains(p)) {
- c.push_back(SP_ITEM(o));
+ if (ThisSnapperMightSnap()) {
+ SPDesktop const *desktop = SP_ACTIVE_DESKTOP;
+ for (SPObject* o = sp_object_first_child(r); o != NULL; o = SP_OBJECT_NEXT(o)) {
+ if (SP_IS_ITEM(o) && !SP_ITEM(o)->isLocked() && !desktop->itemIsHidden(SP_ITEM(o))) {
+
+ /* See if this item is on the ignore list */
+ std::list<SPItem const *>::const_iterator i = it.begin();
+ while (i != it.end() && *i != o) {
+ i++;
}
+
+ if (i == it.end()) {
+ /* See if the item is within range */
+ if (SP_IS_GROUP(o)) {
+ _findCandidates(c, o, it, p);
+ } else {
+ NR::Maybe<NR::Rect> b = sp_item_bbox_desktop(SP_ITEM(o));
+ if ( b && NR::expand(*b, -getDistance()).contains(p) ) {
+ c.push_back(SP_ITEM(o));
+ }
+ }
+ }
+
}
}
-
- _findCandidates(c, o, it, p);
}
}
SPDesktop const *desktop = SP_ACTIVE_DESKTOP;
for (std::list<SPItem*>::const_iterator i = cand.begin(); i != cand.end(); i++) {
- if (SP_IS_SHAPE(*i)) {
-
- SPShape const *sh = SP_SHAPE(*i);
- if (sh->curve) {
-
- int j = 0;
- NR::Matrix const i2doc = sp_item_i2doc_affine(*i);
-
- while (sh->curve->bpath[j].code != NR_END) {
+
+ NR::Matrix i2doc(NR::identity());
+ SPItem *root_item = NULL;
+ if (SP_IS_USE(*i)) {
+ i2doc = sp_use_get_root_transform(SP_USE(*i));
+ root_item = sp_use_root(SP_USE(*i));
+ } else {
+ i2doc = sp_item_i2doc_affine(*i);
+ root_item = *i;
+ }
+
+ SPCurve *curve = NULL;
+
+ if (SP_IS_SHAPE(root_item)) {
+ SPShape const *sh = SP_SHAPE(root_item);
+ curve = sh->curve;
+ } else if (SP_IS_IMAGE(root_item)) {
+ SPImage const *im = SP_IMAGE(root_item);
+ curve = im->curve;
+ }
+
+ if (curve) {
- /* Get this node in desktop coordinates */
- NArtBpath const &bp = sh->curve->bpath[j];
- NR::Point const n = desktop->doc2dt(bp.c(3) * i2doc);
+ int j = 0;
- /* Try to snap to this node of the path */
- NR::Coord const dist = NR::L2(n - p);
- if (dist < getDistance() && dist < s.getDistance()) {
- s = SnappedPoint(n, dist);
- }
-
- j++;
+ while (SP_CURVE_BPATH(curve)[j].code != NR_END) {
+
+ /* Get this node in desktop coordinates */
+ NArtBpath const &bp = SP_CURVE_BPATH(curve)[j];
+ NR::Point const n = desktop->doc2dt(bp.c(3) * i2doc);
+
+ /* Try to snap to this node of the path */
+ NR::Coord const dist = NR::L2(n - p);
+ if (dist < getDistance() && dist < s.getDistance()) {
+ s = SnappedPoint(n, dist);
}
+
+ j++;
}
}
}
SPDesktop const *desktop = SP_ACTIVE_DESKTOP;
NR::Point const p_doc = desktop->dt2doc(p);
-
+
for (std::list<SPItem*>::const_iterator i = cand.begin(); i != cand.end(); i++) {
/* Transform the requested snap point to this item's coordinates */
- NR::Matrix const i2doc = sp_item_i2doc_affine(*i);
+ NR::Matrix i2doc(NR::identity());
+ SPItem *root_item = NULL;
+ /* We might have a clone at hand, so make sure we get the root item */
+ if (SP_IS_USE(*i)) {
+ i2doc = sp_use_get_root_transform(SP_USE(*i));
+ root_item = sp_use_root(SP_USE(*i));
+ } else {
+ i2doc = sp_item_i2doc_affine(*i);
+ root_item = *i;
+ }
+
NR::Point const p_it = p_doc * i2doc.inverse();
+ Path *livarot_path = Path_for_item(root_item, false, false);
+ if (!livarot_path)
+ continue;
+
+ livarot_path->ConvertWithBackData(0.01);
+
/* Look for the nearest position on this SPItem to our snap point */
- NR::Maybe<Path::cut_position> const o = get_nearest_position_on_Path(*i, p_it);
- if (o != NR::Nothing() && o.assume().t >= 0 && o.assume().t <= 1) {
+ NR::Maybe<Path::cut_position> const o = get_nearest_position_on_Path(livarot_path, p_it);
+ if (o && o->t >= 0 && o->t <= 1) {
/* Convert the nearest point back to desktop coordinates */
- NR::Point const o_it = get_point_on_Path(*i, o.assume().piece, o.assume().t);
+ NR::Point const o_it = get_point_on_Path(livarot_path, o->piece, o->t);
NR::Point const o_dt = desktop->doc2dt(o_it * i2doc);
-
+
NR::Coord const dist = NR::L2(o_dt - p);
if (dist < getDistance() && dist < s.getDistance()) {
s = SnappedPoint(o_dt, dist);
}
}
- }
+ delete livarot_path;
+ }
}
Inkscape::SnappedPoint Inkscape::ObjectSnapper::_doFreeSnap(NR::Point const &p,
std::list<SPItem const *> const &it) const
{
+ if ( NULL == _named_view ) {
+ return SnappedPoint(p, NR_HUGE);
+ }
+
/* Get a list of all the SPItems that we will try to snap to */
std::list<SPItem*> cand;
_findCandidates(cand, sp_document_root(_named_view->document), it, p);
Inkscape::SnappedPoint Inkscape::ObjectSnapper::_doConstrainedSnap(NR::Point const &p,
- NR::Point const &c,
+ ConstraintLine const &c,
std::list<SPItem const *> const &it) const
{
/* FIXME: this needs implementing properly; I think we have to do the
@@ -164,6 +211,15 @@ Inkscape::SnappedPoint Inkscape::ObjectSnapper::_doConstrainedSnap(NR::Point con
return _doFreeSnap(p, it);
}
+/**
+ * \return true if this Snapper will snap at least one kind of point.
+ */
+bool Inkscape::ObjectSnapper::ThisSnapperMightSnap() const
+{
+ return (_enabled && _snap_to != 0 && (_snap_to_paths || _snap_to_nodes));
+}
+
+
/*
Local Variables:
mode:c++