void
SPLPEItem::apply_to_clippath(SPItem *item)
{
SPClipPath *clipPath = item->clip_ref->getObject();
if(clipPath) {
SPObject * clip_data = clipPath->firstChild();
SPCurve * clip_curve = NULL;
if (SP_IS_PATH(clip_data)) {
clip_curve = SP_PATH(clip_data)->get_original_curve();
} else if(SP_IS_SHAPE(clip_data)) {
clip_curve = SP_SHAPE(clip_data)->getCurve();
} else if(SP_IS_GROUP(clip_data)) {
apply_to_clip_or_mask_group(SP_ITEM(clip_data), item);
return;
}
if(clip_curve) {
bool success = false;
if(SP_IS_GROUP(this)){
clip_curve->transform(i2anc_affine(SP_GROUP(item), SP_GROUP(this)));
success = this->performPathEffect(clip_curve);
clip_curve->transform(i2anc_affine(SP_GROUP(item), SP_GROUP(this)).inverse());
} else {
success = this->performPathEffect(clip_curve);
}
Inkscape::XML::Node *reprClip = clip_data->getRepr();
if (success) {
gchar *str = sp_svg_write_path(clip_curve->get_pathvector());
reprClip->setAttribute("d", str);
g_free(str);
} else {
// LPE was unsuccesfull. Read the old 'd'-attribute.
if (gchar const * value = reprClip->attribute("d")) {
Geom::PathVector pv = sp_svg_read_pathv(value);
SPCurve *oldcurve = new SPCurve(pv);
if (oldcurve) {
SP_SHAPE(clip_data)->setCurve(oldcurve, TRUE);
oldcurve->unref();
}
}
}
clip_curve->unref();
}
}
if(SP_IS_GROUP(item)){
GSList const *item_list = sp_item_group_item_list(SP_GROUP(item));
for ( GSList const *iter = item_list; iter; iter = iter->next ) {
SPObject *subitem = static_cast<SPObject *>(iter->data);
apply_to_clippath(SP_ITEM(subitem));
}
}
}
static Inkscape::XML::Node *sp_polygon_write(SPObject *object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
{
SPShape *shape = SP_SHAPE(object);
// Tolerable workaround: we need to update the object's curve before we set points=
// because it's out of sync when e.g. some extension attrs of the polygon or star are changed in XML editor
sp_shape_set_shape(shape);
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
repr = xml_doc->createElement("svg:polygon");
}
/* We can safely write points here, because all subclasses require it too (Lauris) */
/* While saving polygon element without points attribute _curve is NULL (see bug 1202753) */
if (shape->curve != NULL) {
gchar *str = sp_svg_write_polygon(shape->curve->get_pathvector());
repr->setAttribute("points", str);
g_free(str);
}
if (((SPObjectClass *) (parent_class))->write) {
((SPObjectClass *) (parent_class))->write(object, xml_doc, repr, flags);
}
return repr;
}
Inkscape::XML::Node* SPUse::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
repr = xml_doc->createElement("svg:use");
}
SPItem::write(xml_doc, repr, flags);
sp_repr_set_svg_double(repr, "x", this->x.computed);
sp_repr_set_svg_double(repr, "y", this->y.computed);
repr->setAttribute("width", sp_svg_length_write_with_units(this->width).c_str());
repr->setAttribute("height", sp_svg_length_write_with_units(this->height).c_str());
if (this->ref->getURI()) {
gchar *uri_string = this->ref->getURI()->toString();
repr->setAttribute("xlink:href", uri_string);
g_free(uri_string);
}
if (SP_IS_SHAPE(this->child)) {
SP_SHAPE(this->child)->set_shape(); // evaluate SPCurve of child
} else if (SP_IS_TEXT(this->child)) {
SP_TEXT(this->child)->rebuildLayout(); // refresh Layout, LP Bug 1339305
} else if (SP_IS_FLOWTEXT(this->child)) {
if (SP_IS_FLOWREGION(SP_FLOWTEXT(this->child)->firstChild()))
SP_FLOWREGION(SP_FLOWTEXT(this->child)->firstChild())->UpdateComputed();
SP_FLOWTEXT(this->child)->rebuildLayout();
}
return repr;
}
void SPUsePath::refresh_source()
{
sourceDirty = false;
delete originalPath;
originalPath = NULL;
// le mauvais cas: pas d'attribut d => il faut verifier que c'est une SPShape puis prendre le contour
// [tr: The bad case: no d attribute. Must check that it's a SPShape and then take the outline.]
SPObject *refobj = 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;
originalPath = new Path;
originalPath->LoadPathVector(curve->get_pathvector(), item->transform, true);
curve->unref();
}
void SPPolyLine::set(SPObject *object, unsigned int key, const gchar *value)
{
SPPolyLine *polyline = SP_POLYLINE(object);
switch (key) {
case SP_ATTR_POINTS: {
SPCurve * curve;
const gchar * cptr;
char * eptr;
gboolean hascpt;
if (!value) break;
curve = new SPCurve ();
hascpt = FALSE;
cptr = value;
eptr = NULL;
while (TRUE) {
gdouble x, y;
while (*cptr != '\0' && (*cptr == ',' || *cptr == '\x20' || *cptr == '\x9' || *cptr == '\xD' || *cptr == '\xA')) {
cptr++;
}
if (!*cptr) break;
x = g_ascii_strtod (cptr, &eptr);
if (eptr == cptr) break;
cptr = eptr;
while (*cptr != '\0' && (*cptr == ',' || *cptr == '\x20' || *cptr == '\x9' || *cptr == '\xD' || *cptr == '\xA')) {
cptr++;
}
if (!*cptr) break;
y = g_ascii_strtod (cptr, &eptr);
if (eptr == cptr) break;
cptr = eptr;
if (hascpt) {
curve->lineto(x, y);
} else {
curve->moveto(x, y);
hascpt = TRUE;
}
}
(SP_SHAPE (polyline))->setCurve (curve, TRUE);
curve->unref();
break;
}
default:
if (((SPObjectClass *) SPPolyLineClass::static_parent_class)->set) {
((SPObjectClass *) SPPolyLineClass::static_parent_class)->set (object, key, value);
}
break;
}
}
static void
knot_moved_handler (SPKnot *knot, NRPointF *p, guint state, gpointer data)
{
SPKnotHolder *knot_holder;
SPItem *item;
SPObject *object;
NRMatrixF i2d;
GSList *el;
knot_holder = (SPKnotHolder *) data;
item = SP_ITEM (knot_holder->item);
object = SP_OBJECT (item);
for (el = knot_holder->entity; el; el = el->next) {
SPKnotHolderEntity *e = (SPKnotHolderEntity *)el->data;
if (e->knot == knot) {
NRMatrixF d2i;
NRPointF q;
sp_item_i2d_affine(item, &i2d);
nr_matrix_f_invert (&d2i, &i2d);
q.x = NR_MATRIX_DF_TRANSFORM_X (&d2i, p->x, p->y);
q.y = NR_MATRIX_DF_TRANSFORM_Y (&d2i, p->x, p->y);
e->knot_set (item, &q, state);
break;
}
}
sp_shape_set_shape (SP_SHAPE (item));
sp_item_i2d_affine(item, &i2d);
for (el = knot_holder->entity; el; el = el->next) {
SPKnotHolderEntity *e = (SPKnotHolderEntity *)el->data;
NRPointF sp, dp;
GObject *kob;
kob = G_OBJECT (e->knot);
e->knot_get (item, &sp);
dp.x = NR_MATRIX_DF_TRANSFORM_X (&i2d, sp.x, sp.y);
dp.y = NR_MATRIX_DF_TRANSFORM_Y (&i2d, sp.x, sp.y);
g_signal_handler_block (kob, e->handler_id);
sp_knot_set_position (e->knot, &dp, SP_KNOT_STATE_NORMAL);
g_signal_handler_unblock (kob, e->handler_id);
}
}
static bool try_get_intersect_point_with_item_recursive(Geom::PathVector& conn_pv, SPItem* item,
const Geom::Affine& item_transform, double& intersect_pos) {
double initial_pos = intersect_pos;
// if this is a group...
if (SP_IS_GROUP(item)) {
SPGroup* group = SP_GROUP(item);
// consider all first-order children
double child_pos = 0.0;
std::vector<SPItem*> g = sp_item_group_item_list(group);
for (std::vector<SPItem*>::const_iterator i = g.begin();i!=g.end();i++) {
SPItem* child_item = *i;
try_get_intersect_point_with_item_recursive(conn_pv, child_item,
item_transform * child_item->transform, child_pos);
if (intersect_pos < child_pos)
intersect_pos = child_pos;
}
return intersect_pos != initial_pos;
}
// if this is not a shape, nothing to be done
if (!SP_IS_SHAPE(item)) return false;
// make sure it has an associated curve
SPCurve* item_curve = SP_SHAPE(item)->getCurve();
if (!item_curve) return false;
// apply transformations (up to common ancestor)
item_curve->transform(item_transform);
const Geom::PathVector& curve_pv = item_curve->get_pathvector();
Geom::CrossingSet cross = crossings(conn_pv, curve_pv);
// iterate over all Crossings
//TODO: check correctness of the following code: inner loop uses loop variable
// with a name identical to the loop variable of the outer loop. Then rename.
for (Geom::CrossingSet::const_iterator i = cross.begin(); i != cross.end(); ++i) {
const Geom::Crossings& cr = *i;
for (Geom::Crossings::const_iterator i = cr.begin(); i != cr.end(); ++i) {
const Geom::Crossing& cr_pt = *i;
if ( intersect_pos < cr_pt.ta)
intersect_pos = cr_pt.ta;
}
}
item_curve->unref();
return intersect_pos != initial_pos;
}
static bool try_get_intersect_point_with_item_recursive(Geom::PathVector& conn_pv, SPItem* item,
const Geom::Matrix& item_transform, double& intersect_pos) {
double initial_pos = intersect_pos;
// if this is a group...
if (SP_IS_GROUP(item)) {
SPGroup* group = SP_GROUP(item);
// consider all first-order children
double child_pos = 0.0;
for (GSList const* i = sp_item_group_item_list(group); i != NULL; i = i->next) {
SPItem* child_item = SP_ITEM(i->data);
try_get_intersect_point_with_item_recursive(conn_pv, child_item,
item_transform * child_item->transform, child_pos);
if (intersect_pos < child_pos)
intersect_pos = child_pos;
}
return intersect_pos != initial_pos;
}
// if this is not a shape, nothing to be done
if (!SP_IS_SHAPE(item)) return false;
// make sure it has an associated curve
SPCurve* item_curve = sp_shape_get_curve(SP_SHAPE(item));
if (!item_curve) return false;
// apply transformations (up to common ancestor)
item_curve->transform(item_transform);
const Geom::PathVector& curve_pv = item_curve->get_pathvector();
Geom::CrossingSet cross = crossings(conn_pv, curve_pv);
// iterate over all Crossings
for (Geom::CrossingSet::const_iterator i = cross.begin(); i != cross.end(); i++) {
const Geom::Crossings& cr = *i;
for (Geom::Crossings::const_iterator i = cr.begin(); i != cr.end(); i++) {
const Geom::Crossing& cr_pt = *i;
if ( intersect_pos < cr_pt.ta)
intersect_pos = cr_pt.ta;
}
}
item_curve->unref();
return intersect_pos != initial_pos;
}
static void
spdc_attach_selection (SPDrawContext *dc, SPSelection *sel)
{
SPItem *item;
/* We reset white and forget white/start/end anchors */
spdc_reset_white (dc);
dc->sa = NULL;
dc->ea = NULL;
item = sp_selection_item (dc->selection);
if (item && SP_IS_PATH (item)) {
SPCurve *norm;
NRMatrixD i2dt;
GSList *l;
/* Create new white data */
/* Item */
dc->white_item = item;
/* Curve list */
/* We keep it in desktop coordinates to eliminate calculation errors */
norm = sp_shape_get_curve (SP_SHAPE (item));
sp_item_i2d_affine_d (dc->white_item, &i2dt);
norm = sp_curve_transform (norm, NR_MATRIX_D_TO_DOUBLE (&i2dt));
g_return_if_fail (norm != NULL);
dc->white_curves = sp_curve_split (norm);
sp_curve_unref (norm);
/* Anchor list */
for (l = dc->white_curves; l != NULL; l = l->next) {
SPCurve *c;
c = (SPCurve*)l->data;
g_return_if_fail (c->end > 1);
if (c->bpath->code == ART_MOVETO_OPEN) {
ArtBpath *s, *e;
SPDrawAnchor *a;
s = sp_curve_first_bpath (c);
e = sp_curve_last_bpath (c);
a = sp_draw_anchor_new (dc, c, TRUE, s->x3, s->y3);
dc->white_anchors = g_slist_prepend (dc->white_anchors, a);
a = sp_draw_anchor_new (dc, c, FALSE, e->x3, e->y3);
dc->white_anchors = g_slist_prepend (dc->white_anchors, a);
}
}
/* fixme: recalculate active anchor? */
}
}
static void GetDest(SPObject* child,Shape **computed)
{
if ( child == NULL ) return;
SPCurve *curve=NULL;
Geom::Matrix tr_mat;
SPObject* u_child=child;
if ( SP_IS_USE(u_child) ) {
u_child=SP_USE(u_child)->child;
tr_mat = SP_ITEM(u_child)->getRelativeTransform(SP_OBJECT_PARENT(child));
} else {
tr_mat = SP_ITEM(u_child)->transform;
}
if ( SP_IS_SHAPE (u_child) ) {
curve = sp_shape_get_curve (SP_SHAPE (u_child));
} else if ( SP_IS_TEXT (u_child) ) {
curve = SP_TEXT (u_child)->getNormalizedBpath ();
}
if ( curve ) {
Path* temp=new Path;
temp->LoadPathVector(curve->get_pathvector(), tr_mat, true);
Shape* n_shp=new Shape;
temp->Convert(0.25);
temp->Fill(n_shp,0);
Shape* uncross=new Shape;
SPStyle* style=SP_OBJECT_STYLE(u_child);
if ( style && style->fill_rule.computed == SP_WIND_RULE_EVENODD ) {
uncross->ConvertToShape(n_shp,fill_oddEven);
} else {
uncross->ConvertToShape(n_shp,fill_nonZero);
}
UnionShape(computed, uncross);
delete uncross;
delete n_shp;
delete temp;
curve->unref();
} else {
// printf("no curve\n");
}
}
static void
sp_star_finish (SPStarContext * sc)
{
if (sc->item != NULL) {
SPDesktop *desktop;
SPObject *object;
desktop = SP_EVENT_CONTEXT (sc)->desktop;
object = SP_OBJECT(sc->item);
sp_shape_set_shape (SP_SHAPE (sc->item));
sp_object_invoke_write (object, NULL, SP_OBJECT_WRITE_EXT);
sp_selection_set_item (SP_DT_SELECTION (desktop), sc->item);
sp_document_done (SP_DT_DOCUMENT (desktop));
sc->item = NULL;
}
}
static void
sp_spiral_finish(SPSpiralContext *sc)
{
sc->_message_context->clear();
if (sc->item != NULL) {
SPDesktop *desktop = SP_EVENT_CONTEXT(sc)->desktop;
SPSpiral *spiral = SP_SPIRAL(sc->item);
sp_shape_set_shape(SP_SHAPE(spiral));
SP_OBJECT(spiral)->updateRepr(SP_OBJECT_WRITE_EXT);
sp_canvas_end_forced_full_redraws(desktop->canvas);
sp_desktop_selection(desktop)->set(sc->item);
sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_SPIRAL,
_("Create spiral"));
sc->item = NULL;
}
}
void
OriginalPathParam::linked_modified_callback(SPObject *linked_obj, guint /*flags*/)
{
SPCurve *curve = NULL;
if (SP_IS_SHAPE(linked_obj)) {
curve = SP_SHAPE(linked_obj)->getCurveBeforeLPE();
}
if (SP_IS_TEXT(linked_obj)) {
curve = SP_TEXT(linked_obj)->getNormalizedBpath();
}
if (curve == NULL) {
// curve invalid, set empty pathvector
_pathvector = Geom::PathVector();
} else {
_pathvector = curve->get_pathvector();
curve->unref();
}
must_recalculate_pwd2 = true;
emit_changed();
SP_OBJECT(param_effect->getLPEObj())->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
static void
sp_spiral_set (SPObject *object, unsigned int key, const gchar *value)
{
SPSpiral *spiral;
SPShape *shape;
gulong unit;
spiral = SP_SPIRAL (object);
shape = SP_SHAPE (object);
/* fixme: we should really collect updates */
switch (key) {
case SP_ATTR_SODIPODI_CX:
if (!sp_svg_length_read_lff (value, &unit, NULL, &spiral->cx) ||
(unit == SP_SVG_UNIT_EM) ||
(unit == SP_SVG_UNIT_EX) ||
(unit == SP_SVG_UNIT_PERCENT)) {
spiral->cx = 0.0;
}
sp_object_request_update (object, SP_OBJECT_MODIFIED_FLAG);
break;
case SP_ATTR_SODIPODI_CY:
if (!sp_svg_length_read_lff (value, &unit, NULL, &spiral->cy) ||
(unit == SP_SVG_UNIT_EM) ||
(unit == SP_SVG_UNIT_EX) ||
(unit == SP_SVG_UNIT_PERCENT)) {
spiral->cy = 0.0;
}
sp_object_request_update (object, SP_OBJECT_MODIFIED_FLAG);
break;
case SP_ATTR_SODIPODI_EXPANSION:
if (value) {
spiral->exp = atof (value);
spiral->exp = CLAMP (spiral->exp, 0.0, 1000.0);
} else {
spiral->exp = 1.0;
}
sp_object_request_update (object, SP_OBJECT_MODIFIED_FLAG);
break;
case SP_ATTR_SODIPODI_REVOLUTION:
if (value) {
spiral->revo = atof (value);
spiral->revo = CLAMP (spiral->revo, 0.05, 20.0);
} else {
spiral->revo = 3.0;
}
sp_object_request_update (object, SP_OBJECT_MODIFIED_FLAG);
break;
case SP_ATTR_SODIPODI_RADIUS:
if (!sp_svg_length_read_lff (value, &unit, NULL, &spiral->rad) ||
(unit != SP_SVG_UNIT_EM) ||
(unit != SP_SVG_UNIT_EX) ||
(unit != SP_SVG_UNIT_PERCENT)) {
spiral->rad = MAX (spiral->rad, 0.001);
}
sp_object_request_update (object, SP_OBJECT_MODIFIED_FLAG);
break;
case SP_ATTR_SODIPODI_ARGUMENT:
if (value) {
spiral->arg = atof (value);
} else {
spiral->arg = 0.0;
}
sp_object_request_update (object, SP_OBJECT_MODIFIED_FLAG);
break;
case SP_ATTR_SODIPODI_T0:
if (value) {
spiral->t0 = atof (value);
spiral->t0 = CLAMP (spiral->t0, -1.0, 0.999);
} else {
spiral->t0 = 0.0;
}
sp_object_request_update (object, SP_OBJECT_MODIFIED_FLAG);
break;
default:
if (((SPObjectClass *) parent_class)->set)
((SPObjectClass *) parent_class)->set (object, key, value);
break;
}
}
Inkscape::XML::Node *
sp_selected_item_to_curved_repr(SPItem *item, guint32 /*text_grouping_policy*/)
{
if (!item)
return NULL;
Inkscape::XML::Document *xml_doc = SP_OBJECT_REPR(item)->document();
if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
// Special treatment for text: convert each glyph to separate path, then group the paths
Inkscape::XML::Node *g_repr = xml_doc->createElement("svg:g");
g_repr->setAttribute("transform", SP_OBJECT_REPR(item)->attribute("transform"));
/* Mask */
gchar *mask_str = (gchar *) SP_OBJECT_REPR(item)->attribute("mask");
if ( mask_str )
g_repr->setAttribute("mask", mask_str);
/* Clip path */
gchar *clip_path_str = (gchar *) SP_OBJECT_REPR(item)->attribute("clip-path");
if ( clip_path_str )
g_repr->setAttribute("clip-path", clip_path_str);
/* Rotation center */
g_repr->setAttribute("inkscape:transform-center-x", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-x"), false);
g_repr->setAttribute("inkscape:transform-center-y", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-y"), false);
/* Whole text's style */
gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(item),
SP_OBJECT_STYLE(SP_OBJECT_PARENT(item)));
g_repr->setAttribute("style", style_str);
g_free(style_str);
Inkscape::Text::Layout::iterator iter = te_get_layout(item)->begin();
do {
Inkscape::Text::Layout::iterator iter_next = iter;
iter_next.nextGlyph(); // iter_next is one glyph ahead from iter
if (iter == iter_next)
break;
/* This glyph's style */
SPObject const *pos_obj = 0;
void *rawptr = 0;
te_get_layout(item)->getSourceOfCharacter(iter, &rawptr);
if (!rawptr || !SP_IS_OBJECT(rawptr)) // no source for glyph, abort
break;
pos_obj = SP_OBJECT(rawptr);
while (SP_IS_STRING(pos_obj) && SP_OBJECT_PARENT(pos_obj)) {
pos_obj = SP_OBJECT_PARENT(pos_obj); // SPStrings don't have style
}
gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(pos_obj),
SP_OBJECT_STYLE(SP_OBJECT_PARENT(pos_obj)));
// get path from iter to iter_next:
SPCurve *curve = te_get_layout(item)->convertToCurves(iter, iter_next);
iter = iter_next; // shift to next glyph
if (!curve) { // error converting this glyph
g_free (style_str);
continue;
}
if (curve->is_empty()) { // whitespace glyph?
curve->unref();
g_free (style_str);
continue;
}
Inkscape::XML::Node *p_repr = xml_doc->createElement("svg:path");
gchar *def_str = sp_svg_write_path(curve->get_pathvector());
p_repr->setAttribute("d", def_str);
g_free(def_str);
curve->unref();
p_repr->setAttribute("style", style_str);
g_free(style_str);
g_repr->appendChild(p_repr);
Inkscape::GC::release(p_repr);
if (iter == te_get_layout(item)->end())
break;
} while (true);
return g_repr;
}
SPCurve *curve = NULL;
if (SP_IS_SHAPE(item)) {
curve = sp_shape_get_curve(SP_SHAPE(item));
}
if (!curve)
return NULL;
// Prevent empty paths from being added to the document
// otherwise we end up with zomby markup in the SVG file
if(curve->is_empty())
{
curve->unref();
return NULL;
}
Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
/* Transformation */
repr->setAttribute("transform", SP_OBJECT_REPR(item)->attribute("transform"));
/* Style */
gchar *style_str = sp_style_write_difference(SP_OBJECT_STYLE(item),
SP_OBJECT_STYLE(SP_OBJECT_PARENT(item)));
repr->setAttribute("style", style_str);
g_free(style_str);
/* Mask */
gchar *mask_str = (gchar *) SP_OBJECT_REPR(item)->attribute("mask");
if ( mask_str )
repr->setAttribute("mask", mask_str);
/* Clip path */
gchar *clip_path_str = (gchar *) SP_OBJECT_REPR(item)->attribute("clip-path");
if ( clip_path_str )
repr->setAttribute("clip-path", clip_path_str);
/* Rotation center */
repr->setAttribute("inkscape:transform-center-x", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-x"), false);
repr->setAttribute("inkscape:transform-center-y", SP_OBJECT_REPR(item)->attribute("inkscape:transform-center-y"), false);
/* Definition */
gchar *def_str = sp_svg_write_path(curve->get_pathvector());
repr->setAttribute("d", def_str);
g_free(def_str);
curve->unref();
return repr;
}
/// @todo investigate why Geom::Point p is passed in but ignored.
void Inkscape::ObjectSnapper::_collectPaths(Geom::Point /*p*/,
SnapSourceType const source_type,
bool const &first_point) const
{
// Now, let's first collect all paths to snap to. If we have a whole bunch of points to snap,
// e.g. when translating an item using the selector tool, then we will only do this for the
// first point and store the collection for later use. This significantly improves the performance
if (first_point) {
_clear_paths();
// Determine the type of bounding box we should snap to
SPItem::BBoxType bbox_type = SPItem::GEOMETRIC_BBOX;
bool p_is_a_node = source_type & SNAPSOURCE_NODE_CATEGORY;
bool p_is_a_bbox = source_type & SNAPSOURCE_BBOX_CATEGORY;
bool p_is_other = (source_type & SNAPSOURCE_OTHERS_CATEGORY) || (source_type & SNAPSOURCE_DATUMS_CATEGORY);
if (_snapmanager->snapprefs.isTargetSnappable(SNAPTARGET_BBOX_EDGE)) {
Preferences *prefs = Preferences::get();
int prefs_bbox = prefs->getBool("/tools/bounding_box", 0);
bbox_type = !prefs_bbox ?
SPItem::VISUAL_BBOX : SPItem::GEOMETRIC_BBOX;
}
// Consider the page border for snapping
if (_snapmanager->snapprefs.isTargetSnappable(SNAPTARGET_PAGE_BORDER) && _snapmanager->snapprefs.isAnyCategorySnappable()) {
Geom::PathVector *border_path = _getBorderPathv();
if (border_path != NULL) {
_paths_to_snap_to->push_back(SnapCandidatePath(border_path, SNAPTARGET_PAGE_BORDER, Geom::OptRect()));
}
}
for (std::vector<SnapCandidateItem>::const_iterator i = _candidates->begin(); i != _candidates->end(); ++i) {
/* Transform the requested snap point to this item's coordinates */
Geom::Affine i2doc(Geom::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).item)) {
i2doc = SP_USE((*i).item)->get_root_transform();
root_item = SP_USE((*i).item)->root();
g_return_if_fail(root_item);
} else {
i2doc = (*i).item->i2doc_affine();
root_item = (*i).item;
}
//Build a list of all paths considered for snapping to
//Add the item's path to snap to
if (_snapmanager->snapprefs.isTargetSnappable(SNAPTARGET_PATH, SNAPTARGET_PATH_INTERSECTION, SNAPTARGET_TEXT_BASELINE)) {
if (p_is_other || p_is_a_node || (!_snapmanager->snapprefs.getStrictSnapping() && p_is_a_bbox)) {
if (SP_IS_TEXT(root_item) || SP_IS_FLOWTEXT(root_item)) {
if (_snapmanager->snapprefs.isTargetSnappable(SNAPTARGET_TEXT_BASELINE)) {
// Snap to the text baseline
Text::Layout const *layout = te_get_layout(static_cast<SPItem *>(root_item));
if (layout != NULL && layout->outputExists()) {
Geom::PathVector *pv = new Geom::PathVector();
pv->push_back(layout->baseline() * root_item->i2dt_affine() * (*i).additional_affine * _snapmanager->getDesktop()->doc2dt());
_paths_to_snap_to->push_back(SnapCandidatePath(pv, SNAPTARGET_TEXT_BASELINE, Geom::OptRect()));
}
}
} else {
// Snapping for example to a traced bitmap is very stressing for
// the CPU, so we'll only snap to paths having no more than 500 nodes
// This also leads to a lag of approx. 500 msec (in my lousy test set-up).
bool very_complex_path = false;
if (SP_IS_PATH(root_item)) {
very_complex_path = SP_PATH(root_item)->nodesInPath() > 500;
}
if (!very_complex_path && root_item && _snapmanager->snapprefs.isTargetSnappable(SNAPTARGET_PATH, SNAPTARGET_PATH_INTERSECTION)) {
SPCurve *curve = NULL;
if (SP_IS_SHAPE(root_item)) {
curve = SP_SHAPE(root_item)->getCurve();
}/* else if (SP_IS_TEXT(root_item) || SP_IS_FLOWTEXT(root_item)) {
curve = te_get_layout(root_item)->convertToCurves();
}*/
if (curve) {
// We will get our own copy of the pathvector, which must be freed at some point
// Geom::PathVector *pv = pathvector_for_curve(root_item, curve, true, true, Geom::identity(), (*i).additional_affine);
Geom::PathVector *pv = new Geom::PathVector(curve->get_pathvector());
(*pv) *= root_item->i2dt_affine() * (*i).additional_affine * _snapmanager->getDesktop()->doc2dt(); // (_edit_transform * _i2d_transform);
_paths_to_snap_to->push_back(SnapCandidatePath(pv, SNAPTARGET_PATH, Geom::OptRect())); // Perhaps for speed, get a reference to the Geom::pathvector, and store the transformation besides it.
curve->unref();
}
}
}
}
}
//Add the item's bounding box to snap to
if (_snapmanager->snapprefs.isTargetSnappable(SNAPTARGET_BBOX_EDGE)) {
if (p_is_other || p_is_a_bbox || (!_snapmanager->snapprefs.getStrictSnapping() && p_is_a_node)) {
// Discard the bbox of a clipped path / mask, because we don't want to snap to both the bbox
// of the item AND the bbox of the clipping path at the same time
if (!(*i).clip_or_mask) {
Geom::OptRect rect = root_item->bounds(bbox_type, i2doc);
if (rect) {
Geom::PathVector *path = _getPathvFromRect(*rect);
rect = root_item->desktopBounds(bbox_type);
_paths_to_snap_to->push_back(SnapCandidatePath(path, SNAPTARGET_BBOX_EDGE, rect));
}
}
}
}
}
}
}
void sp_polygon_set(SPObject *object, unsigned int key, const gchar *value)
{
SPPolygon *polygon = SP_POLYGON(object);
switch (key) {
case SP_ATTR_POINTS: {
if (!value) {
/* fixme: The points attribute is required. We should handle its absence as per
* http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing. */
break;
}
SPCurve *curve = new SPCurve();
gboolean hascpt = FALSE;
gchar const *cptr = value;
bool has_error = false;
while (TRUE) {
gdouble x;
if (!polygon_get_value(&cptr, &x)) {
break;
}
gdouble y;
if (!polygon_get_value(&cptr, &y)) {
/* fixme: It is an error for an odd number of points to be specified. We
* should display the points up to now (as we currently do, though perhaps
* without the closepath: the spec isn't quite clear on whether to do a
* closepath or not, though I'd guess it's best not to do a closepath), but
* then flag the document as in error, as per
* http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing.
*
* (Ref: http://www.w3.org/TR/SVG11/shapes.html#PolygonElement.) */
has_error = true;
break;
}
if (hascpt) {
curve->lineto(x, y);
} else {
curve->moveto(x, y);
hascpt = TRUE;
}
}
if (has_error || *cptr != '\0') {
/* TODO: Flag the document as in error, as per
* http://www.w3.org/TR/SVG11/implnote.html#ErrorProcessing. */
} else if (hascpt) {
/* We might have done a moveto but no lineto. I'm not sure how we're supposed to represent
* a single-point polygon in SPCurve. TODO: add a testcase with only one coordinate pair */
curve->closepath();
}
sp_shape_set_curve(SP_SHAPE(polygon), curve, TRUE);
curve->unref();
break;
}
default:
if (((SPObjectClass *) parent_class)->set) {
((SPObjectClass *) parent_class)->set(object, key, value);
}
break;
}
}
/**
* Get the selected image. Also check for any SPItems over it, in
* case the user wants SIOX pre-processing.
*/
SPImage *
Tracer::getSelectedSPImage()
{
SPDesktop *desktop = SP_ACTIVE_DESKTOP;
if (!desktop)
{
g_warning("Trace: No active desktop");
return NULL;
}
Inkscape::MessageStack *msgStack = sp_desktop_message_stack(desktop);
Inkscape::Selection *sel = sp_desktop_selection(desktop);
if (!sel)
{
char *msg = _("Select an <b>image</b> to trace");
msgStack->flash(Inkscape::ERROR_MESSAGE, msg);
//g_warning(msg);
return NULL;
}
if (sioxEnabled)
{
SPImage *img = NULL;
GSList const *list = sel->itemList();
std::vector<SPItem *> items;
sioxShapes.clear();
/*
First, things are selected top-to-bottom, so we need to invert
them as bottom-to-top so that we can discover the image and any
SPItems above it
*/
for ( ; list ; list=list->next)
{
if (!SP_IS_ITEM(list->data))
{
continue;
}
SPItem *item = SP_ITEM(list->data);
items.insert(items.begin(), item);
}
std::vector<SPItem *>::iterator iter;
for (iter = items.begin() ; iter!= items.end() ; iter++)
{
SPItem *item = *iter;
if (SP_IS_IMAGE(item))
{
if (img) //we want only one
{
char *msg = _("Select only one <b>image</b> to trace");
msgStack->flash(Inkscape::ERROR_MESSAGE, msg);
return NULL;
}
img = SP_IMAGE(item);
}
else // if (img) //# items -after- the image in tree (above it in Z)
{
if (SP_IS_SHAPE(item))
{
SPShape *shape = SP_SHAPE(item);
sioxShapes.push_back(shape);
}
}
}
if (!img || sioxShapes.size() < 1)
{
char *msg = _("Select one image and one or more shapes above it");
msgStack->flash(Inkscape::ERROR_MESSAGE, msg);
return NULL;
}
return img;
}
else
//### SIOX not enabled. We want exactly one image selected
{
SPItem *item = sel->singleItem();
if (!item)
{
char *msg = _("Select an <b>image</b> to trace"); //same as above
msgStack->flash(Inkscape::ERROR_MESSAGE, msg);
//g_warning(msg);
return NULL;
}
if (!SP_IS_IMAGE(item))
{
char *msg = _("Select an <b>image</b> to trace");
msgStack->flash(Inkscape::ERROR_MESSAGE, msg);
//g_warning(msg);
return NULL;
}
SPImage *img = SP_IMAGE(item);
return img;
}
}
