void spdc_create_single_dot(ToolBase *ec, Geom::Point const &pt, char const *tool, guint event_state) {
g_return_if_fail(!strcmp(tool, "/tools/freehand/pen") || !strcmp(tool, "/tools/freehand/pencil"));
Glib::ustring tool_path = tool;
SPDesktop *desktop = ec->desktop;
Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
repr->setAttribute("sodipodi:type", "arc");
SPItem *item = SP_ITEM(desktop->currentLayer()->appendChildRepr(repr));
Inkscape::GC::release(repr);
// apply the tool's current style
sp_desktop_apply_style_tool(desktop, repr, tool, false);
// find out stroke width (TODO: is there an easier way??)
double stroke_width = 3.0;
gchar const *style_str = repr->attribute("style");
if (style_str) {
SPStyle style(SP_ACTIVE_DOCUMENT);
style.mergeString(style_str);
stroke_width = style.stroke_width.computed;
}
// unset stroke and set fill color to former stroke color
gchar * str;
str = g_strdup_printf("fill:#%06x;stroke:none;", sp_desktop_get_color_tool(desktop, tool, false) >> 8);
repr->setAttribute("style", str);
g_free(str);
// put the circle where the mouse click occurred and set the diameter to the
// current stroke width, multiplied by the amount specified in the preferences
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
Geom::Affine const i2d (item->i2dt_affine ());
Geom::Point pp = pt * i2d.inverse();
double rad = 0.5 * prefs->getDouble(tool_path + "/dot-size", 3.0);
if (event_state & GDK_MOD1_MASK) {
// TODO: We vary the dot size between 0.5*rad and 1.5*rad, where rad is the dot size
// as specified in prefs. Very simple, but it might be sufficient in practice. If not,
// we need to devise something more sophisticated.
double s = g_random_double_range(-0.5, 0.5);
rad *= (1 + s);
}
if (event_state & GDK_SHIFT_MASK) {
// double the point size
rad *= 2;
}
sp_repr_set_svg_double (repr, "sodipodi:cx", pp[Geom::X]);
sp_repr_set_svg_double (repr, "sodipodi:cy", pp[Geom::Y]);
sp_repr_set_svg_double (repr, "sodipodi:rx", rad * stroke_width);
sp_repr_set_svg_double (repr, "sodipodi:ry", rad * stroke_width);
item->updateRepr();
desktop->getSelection()->set(item);
desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating single dot"));
DocumentUndo::done(desktop->getDocument(), SP_VERB_NONE, _("Create single dot"));
}
void
sp_gradient_set_gs2d_matrix(SPGradient *gr, Geom::Affine const &ctm,
Geom::Rect const &bbox, Geom::Affine const &gs2d)
{
gr->gradientTransform = gs2d * ctm.inverse();
if (gr->getUnits() == SP_GRADIENT_UNITS_OBJECTBOUNDINGBOX ) {
gr->gradientTransform = ( gr->gradientTransform
* Geom::Translate(-bbox.min())
* Geom::Scale(bbox.dimensions()).inverse() );
}
gr->gradientTransform_set = TRUE;
gr->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
/**
* Sensing a movement of the original, this function attempts to compensate for it in such a way
* that the clone stays unmoved or moves in parallel (depending on user setting) regardless of the
* clone's transform.
*/
void SPUse::move_compensate(Geom::Affine const *mp) {
// the clone is orphaned; or this is not a real use, but a clone of another use;
// we skip it, otherwise duplicate compensation will occur
if (this->cloned) {
return;
}
// never compensate uses which are used in flowtext
if (this->parent && SP_IS_FLOWREGION(this->parent)) {
return;
}
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
guint mode = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_PARALLEL);
// user wants no compensation
if (mode == SP_CLONE_COMPENSATION_NONE)
return;
Geom::Affine m(*mp);
// this is not a simple move, do not try to compensate
if (!(m.isTranslation()))
return;
// restore item->transform field from the repr, in case it was changed by seltrans
this->readAttr ("transform");
Geom::Affine t = this->get_parent_transform();
Geom::Affine clone_move = t.inverse() * m * t;
// calculate the compensation matrix and the advertized movement matrix
Geom::Affine advertized_move;
if (mode == SP_CLONE_COMPENSATION_PARALLEL) {
clone_move = clone_move.inverse() * m;
advertized_move = m;
} else if (mode == SP_CLONE_COMPENSATION_UNMOVED) {
clone_move = clone_move.inverse();
advertized_move.setIdentity();
} else {
g_assert_not_reached();
}
// commit the compensation
this->transform *= clone_move;
this->doWriteTransform(this->getRepr(), this->transform, &advertized_move);
this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
Geom::Point
KnotHolderEntity::snap_knot_position(Geom::Point const &p, guint state)
{
if (state & GDK_SHIFT_MASK) { // Don't snap when shift-key is held
return p;
}
Geom::Affine const i2dt (item->i2dt_affine());
Geom::Point s = p * i2dt;
SnapManager &m = desktop->namedview->snap_manager;
m.setup(desktop, true, item);
m.freeSnapReturnByRef(s, Inkscape::SNAPSOURCE_NODE_HANDLE);
m.unSetup();
return s * i2dt.inverse();
}
static void
sp_usepath_move_compensate(Geom::Affine const *mp, SPItem *original, SPUsePath *self)
{
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
guint mode = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_PARALLEL);
if (mode == SP_CLONE_COMPENSATION_NONE) {
return;
}
SPItem *item = SP_ITEM(self->owner);
// TODO kill naughty naughty #if 0
#if 0
Geom::Affine m(*mp);
if (!(m.is_translation())) {
return;
}
Geom::Affine const t(item->transform);
Geom::Affine clone_move = t.inverse() * m * t;
// Calculate the compensation matrix and the advertized movement matrix.
Geom::Affine advertized_move;
if (mode == SP_CLONE_COMPENSATION_PARALLEL) {
//clone_move = clone_move.inverse();
advertized_move.set_identity();
} else if (mode == SP_CLONE_COMPENSATION_UNMOVED) {
clone_move = clone_move.inverse() * m;
advertized_move = m;
} else {
g_assert_not_reached();
}
// Commit the compensation.
item->transform *= clone_move;
sp_item_write_transform(item, item->getRepr(), item->transform, &advertized_move);
#else
(void)mp;
(void)original;
#endif
self->sourceDirty = true;
item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
Geom::Point
KnotHolderEntity::snap_knot_position_constrained(Geom::Point const &p, Inkscape::Snapper::SnapConstraint const &constraint, guint state)
{
if (state & GDK_SHIFT_MASK) { // Don't snap when shift-key is held
return p;
}
Geom::Affine const i2d (item->i2dt_affine());
Geom::Point s = p * i2d;
SnapManager &m = desktop->namedview->snap_manager;
m.setup(desktop, true, item);
// constrainedSnap() will first project the point p onto the constraint line and then try to snap along that line.
// This way the constraint is already enforced, no need to worry about that later on
Inkscape::Snapper::SnapConstraint transformed_constraint = Inkscape::Snapper::SnapConstraint(constraint.getPoint() * i2d, (constraint.getPoint() + constraint.getDirection()) * i2d - constraint.getPoint() * i2d);
m.constrainedSnapReturnByRef(s, Inkscape::SNAPSOURCE_NODE_HANDLE, transformed_constraint);
m.unSetup();
return s * i2d.inverse();
}
static void sp_offset_move_compensate(Geom::Affine const *mp, SPItem */*original*/, SPOffset *self)
{
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
guint mode = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_PARALLEL);
Geom::Affine m(*mp);
if (!(m.isTranslation()) || mode == SP_CLONE_COMPENSATION_NONE) {
self->sourceDirty=true;
self->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
return;
}
// calculate the compensation matrix and the advertized movement matrix
self->readAttr("transform");
Geom::Affine t = self->transform;
Geom::Affine offset_move = t.inverse() * m * t;
Geom::Affine advertized_move;
if (mode == SP_CLONE_COMPENSATION_PARALLEL) {
offset_move = offset_move.inverse() * m;
advertized_move = m;
} else if (mode == SP_CLONE_COMPENSATION_UNMOVED) {
offset_move = offset_move.inverse();
advertized_move.setIdentity();
} else {
g_assert_not_reached();
}
self->sourceDirty=true;
// commit the compensation
self->transform *= offset_move;
self->doWriteTransform(self->getRepr(), self->transform, &advertized_move);
self->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
/**
* Sensing a movement of the original, this function attempts to compensate for it in such a way
* that the clone stays unmoved or moves in parallel (depending on user setting) regardless of the
* clone's transform.
*/
void SPUse::move_compensate(Geom::Affine const *mp) {
// the clone is orphaned; or this is not a real use, but a clone of another use;
// we skip it, otherwise duplicate compensation will occur
if (this->cloned) {
return;
}
// never compensate uses which are used in flowtext
if (parent && dynamic_cast<SPFlowregion *>(parent)) {
return;
}
Inkscape::Preferences *prefs = Inkscape::Preferences::get();
guint mode = prefs->getInt("/options/clonecompensation/value", SP_CLONE_COMPENSATION_PARALLEL);
// user wants no compensation
if (mode == SP_CLONE_COMPENSATION_NONE)
return;
Geom::Affine m(*mp);
Geom::Affine t = this->get_parent_transform();
Geom::Affine clone_move = t.inverse() * m * t;
// this is not a simple move, do not try to compensate
if (!(m.isTranslation())){
//BUT move clippaths accordingly.
//if clone has a clippath, move it accordingly
if(clip_ref->getObject()){
SPObject *clip = clip_ref->getObject()->firstChild() ;
while(clip){
SPItem *item = (SPItem*) clip;
if(item){
item->transform *= m;
Geom::Affine identity;
item->doWriteTransform(clip->getRepr(),item->transform, &identity);
}
clip = clip->getNext();
}
}
if(mask_ref->getObject()){
SPObject *mask = mask_ref->getObject()->firstChild() ;
while(mask){
SPItem *item = (SPItem*) mask;
if(item){
item->transform *= m;
Geom::Affine identity;
item->doWriteTransform(mask->getRepr(),item->transform, &identity);
}
mask = mask->getNext();
}
}
return;
}
// restore item->transform field from the repr, in case it was changed by seltrans
this->readAttr ("transform");
// calculate the compensation matrix and the advertized movement matrix
Geom::Affine advertized_move;
if (mode == SP_CLONE_COMPENSATION_PARALLEL) {
clone_move = clone_move.inverse() * m;
advertized_move = m;
} else if (mode == SP_CLONE_COMPENSATION_UNMOVED) {
clone_move = clone_move.inverse();
advertized_move.setIdentity();
} else {
g_assert_not_reached();
}
//if clone has a clippath, move it accordingly
if(clip_ref->getObject()){
SPObject *clip = clip_ref->getObject()->firstChild() ;
while(clip){
SPItem *item = (SPItem*) clip;
if(item){
item->transform *= clone_move.inverse();
Geom::Affine identity;
item->doWriteTransform(clip->getRepr(),item->transform, &identity);
}
clip = clip->getNext();
}
}
if(mask_ref->getObject()){
SPObject *mask = mask_ref->getObject()->firstChild() ;
while(mask){
SPItem *item = (SPItem*) mask;
if(item){
item->transform *= clone_move.inverse();
Geom::Affine identity;
item->doWriteTransform(mask->getRepr(),item->transform, &identity);
}
mask = mask->getNext();
}
}
// commit the compensation
this->transform *= clone_move;
this->doWriteTransform(this->getRepr(), this->transform, &advertized_move);
this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
}
void
sp_item_group_ungroup (SPGroup *group, GSList **children, bool do_done)
{
g_return_if_fail (group != NULL);
g_return_if_fail (SP_IS_GROUP (group));
SPDocument *doc = group->document;
SPRoot *root = doc->getRoot();
SPObject *defs = root->defs;
SPItem *gitem = group;
Inkscape::XML::Node *grepr = gitem->getRepr();
g_return_if_fail (!strcmp (grepr->name(), "svg:g") || !strcmp (grepr->name(), "svg:a") || !strcmp (grepr->name(), "svg:switch"));
// this converts the gradient/pattern fill/stroke on the group, if any, to userSpaceOnUse
gitem->adjust_paint_recursive (Geom::identity(), Geom::identity(), false);
SPItem *pitem = SP_ITEM(gitem->parent);
Inkscape::XML::Node *prepr = pitem->getRepr();
if (SP_IS_BOX3D(gitem)) {
group = box3d_convert_to_group(SP_BOX3D(gitem));
gitem = group;
}
sp_lpe_item_remove_all_path_effects(SP_LPE_ITEM(group), false);
/* Step 1 - generate lists of children objects */
GSList *items = NULL;
GSList *objects = NULL;
for (SPObject *child = group->firstChild() ; child; child = child->getNext() ) {
if (SP_IS_ITEM (child)) {
SPItem *citem = SP_ITEM (child);
/* Merging of style */
// this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do
// it here _before_ the new transform is set, so as to use the pre-transform bbox
citem->adjust_paint_recursive (Geom::identity(), Geom::identity(), false);
sp_style_merge_from_dying_parent(child->style, gitem->style);
/*
* fixme: We currently make no allowance for the case where child is cloned
* and the group has any style settings.
*
* (This should never occur with documents created solely with the current
* version of inkscape without using the XML editor: we usually apply group
* style changes to children rather than to the group itself.)
*
* If the group has no style settings, then
* sp_style_merge_from_dying_parent should be a no-op. Otherwise (i.e. if
* we change the child's style to compensate for its parent going away)
* then those changes will typically be reflected in any clones of child,
* whereas we'd prefer for Ungroup not to affect the visual appearance.
*
* The only way of preserving styling appearance in general is for child to
* be put into a new group -- a somewhat surprising response to an Ungroup
* command. We could add a new groupmode:transparent that would mostly
* hide the existence of such groups from the user (i.e. editing behaves as
* if the transparent group's children weren't in a group), though that's
* extra complication & maintenance burden and this case is rare.
*/
child->updateRepr();
Inkscape::XML::Node *nrepr = child->getRepr()->duplicate(prepr->document());
// Merging transform
Geom::Affine ctrans;
Geom::Affine const g(gitem->transform);
if (SP_IS_USE(citem) && sp_use_get_original (SP_USE(citem)) &&
sp_use_get_original( SP_USE(citem) )->parent == SP_OBJECT(group)) {
// make sure a clone's effective transform is the same as was under group
ctrans = g.inverse() * citem->transform * g;
} else {
// We should not apply the group's transformation to both a linked offset AND to its source
if (SP_IS_OFFSET(citem)) { // Do we have an offset at hand (whether it's dynamic or linked)?
SPItem *source = sp_offset_get_source(SP_OFFSET(citem));
// When dealing with a chain of linked offsets, the transformation of an offset will be
// tied to the transformation of the top-most source, not to any of the intermediate
// offsets. So let's find the top-most source
while (source != NULL && SP_IS_OFFSET(source)) {
source = sp_offset_get_source(SP_OFFSET(source));
}
if (source != NULL && // If true then we must be dealing with a linked offset ...
group->isAncestorOf(source) == false) { // ... of which the source is not in the same group
ctrans = citem->transform * g; // then we should apply the transformation of the group to the offset
} else {
ctrans = citem->transform;
}
} else {
ctrans = citem->transform * g;
}
}
// FIXME: constructing a transform that would fully preserve the appearance of a
// textpath if it is ungrouped with its path seems to be impossible in general
// case. E.g. if the group was squeezed, to keep the ungrouped textpath squeezed
// as well, we'll need to relink it to some "virtual" path which is inversely
// stretched relative to the actual path, and then squeeze the textpath back so it
// would both fit the actual path _and_ be squeezed as before. It's a bummer.
// This is just a way to temporarily remember the transform in repr. When repr is
// reattached outside of the group, the transform will be written more properly
// (i.e. optimized into the object if the corresponding preference is set)
gchar *affinestr=sp_svg_transform_write(ctrans);
nrepr->setAttribute("transform", affinestr);
g_free(affinestr);
items = g_slist_prepend (items, nrepr);
} else {
Inkscape::XML::Node *nrepr = child->getRepr()->duplicate(prepr->document());
objects = g_slist_prepend (objects, nrepr);
}
}
/* Step 2 - clear group */
// remember the position of the group
gint pos = group->getRepr()->position();
// the group is leaving forever, no heir, clones should take note; its children however are going to reemerge
group->deleteObject(true, false);
/* Step 3 - add nonitems */
if (objects) {
Inkscape::XML::Node *last_def = defs->getRepr()->lastChild();
while (objects) {
Inkscape::XML::Node *repr = (Inkscape::XML::Node *) objects->data;
if (!sp_repr_is_meta_element(repr)) {
defs->getRepr()->addChild(repr, last_def);
}
Inkscape::GC::release(repr);
objects = g_slist_remove (objects, objects->data);
}
}
/* Step 4 - add items */
while (items) {
Inkscape::XML::Node *repr = (Inkscape::XML::Node *) items->data;
// add item
prepr->appendChild(repr);
// restore position; since the items list was prepended (i.e. reverse), we now add
// all children at the same pos, which inverts the order once again
repr->setPosition(pos > 0 ? pos : 0);
// fill in the children list if non-null
SPItem *item = static_cast<SPItem *>(doc->getObjectByRepr(repr));
item->doWriteTransform(repr, item->transform, NULL, false);
Inkscape::GC::release(repr);
if (children && SP_IS_ITEM (item))
*children = g_slist_prepend (*children, item);
items = g_slist_remove (items, items->data);
}
if (do_done) {
DocumentUndo::done(doc, SP_VERB_NONE, _("Ungroup"));
}
}