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/*
* Inkscape::ShapeEditor
*
* Authors:
* bulia byak <buliabyak@users.sf.net>
* Krzysztof Kosiński <tweenk.pl@gmail.com>
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <glibmm/i18n.h>
#include "desktop.h"
#include "document.h"
#include "knotholder.h"
#include "sp-ellipse.h"
#include "inkscape.h"
#include "ui/object-edit.h"
#include "ui/shape-editor.h"
#include "xml/node-event-vector.h"
//using Inkscape::createKnotHolder;
namespace Inkscape {
namespace UI {
bool ShapeEditor::_blockSetItem = false;
ShapeEditor::ShapeEditor(SPDesktop *dt) {
this->desktop = dt;
this->knotholder = NULL;
this->knotholder_listener_attached_for = NULL;
}
ShapeEditor::~ShapeEditor() {
unset_item();
}
void ShapeEditor::unset_item(bool keep_knotholder) {
if (this->knotholder) {
Inkscape::XML::Node *old_repr = this->knotholder->repr;
if (old_repr && old_repr == knotholder_listener_attached_for) {
sp_repr_remove_listener_by_data(old_repr, this);
Inkscape::GC::release(old_repr);
knotholder_listener_attached_for = NULL;
}
if (!keep_knotholder) {
delete this->knotholder;
this->knotholder = NULL;
}
}
}
bool ShapeEditor::has_knotholder() {
return this->knotholder != NULL;
}
void ShapeEditor::update_knotholder() {
if (this->knotholder)
this->knotholder->update_knots();
}
bool ShapeEditor::has_local_change() {
return (this->knotholder && this->knotholder->local_change != 0);
}
void ShapeEditor::decrement_local_change() {
if (this->knotholder) {
this->knotholder->local_change = FALSE;
}
}
const SPItem *ShapeEditor::get_item() {
const SPItem *item = NULL;
if (this->has_knotholder()) {
item = this->knotholder->getItem();
}
return item;
}
void ShapeEditor::event_attr_changed(Inkscape::XML::Node * node, gchar const *name, gchar const *, gchar const *, bool, void *data)
{
g_assert(data);
ShapeEditor *sh = static_cast<ShapeEditor *>(data);
bool changed_kh = false;
if (sh->has_knotholder())
{
changed_kh = !sh->has_local_change();
sh->decrement_local_change();
if (changed_kh) {
// this can happen if an LPEItem's knotholder handle was dragged, in which case we want
// to keep the knotholder; in all other cases (e.g., if the LPE itself changes) we delete it
sh->reset_item(!strcmp(name, "d") ||
!strcmp(node->name(),"svg:rect") );//||
// !strcmp(node->name(),"svg:star") ||
// !strcmp(node->name(),"svg:spiral") ||
// !strcmp(node->name(),"svg:ellipse") ||
// SP_IS_GENERICELLIPSE(SP_ACTIVE_DOCUMENT->getObjectById(node->attribute("id"))));
}
}
}
static Inkscape::XML::NodeEventVector shapeeditor_repr_events = {
NULL, /* child_added */
NULL, /* child_removed */
ShapeEditor::event_attr_changed,
NULL, /* content_changed */
NULL /* order_changed */
};
void ShapeEditor::set_item(SPItem *item, bool keep_knotholder) {
if (_blockSetItem) {
return;
}
// this happens (and should only happen) when for an LPEItem having both knotholder and
// nodepath the knotholder is adapted; in this case we don't want to delete the knotholder
// since this freezes the handles
unset_item(keep_knotholder);
if (item) {
Inkscape::XML::Node *repr;
if (!this->knotholder) {
// only recreate knotholder if none is present
this->knotholder = createKnotHolder(item, desktop);
}
if (this->knotholder) {
this->knotholder->update_knots();
// setting new listener
repr = this->knotholder->repr;
if (repr != knotholder_listener_attached_for) {
Inkscape::GC::anchor(repr);
sp_repr_add_listener(repr, &shapeeditor_repr_events, this);
knotholder_listener_attached_for = repr;
}
}
}
}
/** FIXME: This thing is only called when the item needs to be updated in response to repr change.
Why not make a reload function in KnotHolder? */
void ShapeEditor::reset_item(bool keep_knotholder)
{
if (knotholder) {
SPObject *obj = desktop->getDocument()->getObjectByRepr(knotholder_listener_attached_for); /// note that it is not certain that this is an SPItem; it could be a LivePathEffectObject.
set_item(SP_ITEM(obj), keep_knotholder);
}
}
/**
* Returns true if this ShapeEditor has a knot above which the mouse currently hovers.
*/
bool ShapeEditor::knot_mouseover() const {
if (this->knotholder) {
return knotholder->knot_mouseover();
}
return false;
}
} // namespace UI
} // namespace Inkscape
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
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