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/*
* Per-desktop selection container
*
* Authors:
* Lauris Kaplinski <lauris@kaplinski.com>
* MenTaLguY <mental@rydia.net>
* bulia byak <buliabyak@users.sf.net>
* Andrius R. <knutux@gmail.com>
* Abhishek Sharma
* Adrian Boguszewski
*
* Copyright (C) 2016 Adrian Boguszewski
* Copyright (C) 2006 Andrius R.
* Copyright (C) 2004-2005 MenTaLguY
* Copyright (C) 1999-2002 Lauris Kaplinski
* Copyright (C) 2001-2002 Ximian, Inc.
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#ifdef HAVE_CONFIG_H
#endif
#include "inkscape.h"
#include "xml/repr.h"
#include "preferences.h"
#include "sp-shape.h"
#include "sp-path.h"
#include "document.h"
#define SP_SELECTION_UPDATE_PRIORITY (G_PRIORITY_HIGH_IDLE + 1)
namespace Inkscape {
Selection::Selection(LayerModel *layers, SPDesktop *desktop) :
_layers(layers),
_desktop(desktop),
_selection_context(NULL),
_flags(0),
_idle(0)
{
}
Selection::~Selection() {
_layers = NULL;
if (_idle) {
g_source_remove(_idle);
_idle = 0;
}
}
/* Handler for selected objects "modified" signal */
void Selection::_schedule_modified(SPObject */*obj*/, guint flags) {
if (!this->_idle) {
/* Request handling to be run in _idle loop */
this->_idle = g_idle_add_full(SP_SELECTION_UPDATE_PRIORITY, GSourceFunc(&Selection::_emit_modified), this, NULL);
}
/* Collect all flags */
this->_flags |= flags;
}
gboolean Selection::_emit_modified(Selection *selection)
{
/* force new handler to be created if requested before we return */
selection->_idle = 0;
guint flags = selection->_flags;
selection->_flags = 0;
selection->_emitModified(flags);
/* drop this handler */
return FALSE;
}
void Selection::_emitModified(guint flags) {
INKSCAPE.selection_modified(this, flags);
_modified_signal.emit(this, flags);
}
void Selection::_emitChanged(bool persist_selection_context/* = false */) {
if (persist_selection_context) {
if (NULL == _selection_context) {
_selection_context = _layers->currentLayer();
sp_object_ref(_selection_context, NULL);
_context_release_connection = _selection_context->connectRelease(sigc::mem_fun(*this, &Selection::_releaseContext));
}
} else {
_releaseContext(_selection_context);
}
INKSCAPE.selection_changed(this);
_changed_signal.emit(this);
}
void Selection::_releaseContext(SPObject *obj)
{
if (NULL == _selection_context || _selection_context != obj)
return;
_context_release_connection.disconnect();
sp_object_unref(_selection_context, NULL);
_selection_context = NULL;
}
SPObject *Selection::activeContext() {
if (NULL != _selection_context)
return _selection_context;
return _layers->currentLayer();
}
void Selection::set(SPObject *object, bool persist_selection_context) {
ObjectSet::set(object);
_emitChanged(persist_selection_context);
}
void Selection::setReprList(std::vector<XML::Node*> const &list) {
clear();
for (std::vector<XML::Node*>::const_reverse_iterator iter = list.rbegin(); iter != list.rend(); ++iter) {
SPObject *obj = _objectForXMLNode(*iter);
if (obj) {
add(obj);
}
}
_emitChanged();
}
std::vector<XML::Node*> Selection::reprList() {
std::vector<SPItem*> list = itemList();
std::vector<XML::Node*> result;
std::transform(list.begin(), list.end(), std::back_inserter(result), [](SPItem* item) { return item->getRepr(); });
return result;
}
Inkscape::XML::Node *Selection::singleRepr() {
SPObject *obj = single();
return obj ? obj->getRepr() : nullptr;
}
std::vector<Inkscape::SnapCandidatePoint> Selection::getSnapPoints(SnapPreferences const *snapprefs) const {
std::vector<Inkscape::SnapCandidatePoint> p;
if (snapprefs != NULL){
SnapPreferences snapprefs_dummy = *snapprefs; // create a local copy of the snapping prefs
snapprefs_dummy.setTargetSnappable(Inkscape::SNAPTARGET_ROTATION_CENTER, false); // locally disable snapping to the item center
std::vector<SPItem*> const items = const_cast<Selection *>(this)->itemList();
for ( std::vector<SPItem*>::const_iterator iter=items.begin();iter!=items.end(); ++iter) {
SPItem *this_item = *iter;
this_item->getSnappoints(p, &snapprefs_dummy);
//Include the transformation origin for snapping
//For a selection or group only the overall center is considered, not for each item individually
if (snapprefs->isTargetSnappable(Inkscape::SNAPTARGET_ROTATION_CENTER)) {
p.push_back(Inkscape::SnapCandidatePoint(this_item->getCenter(), SNAPSOURCE_ROTATION_CENTER));
}
}
}
return p;
}
SPObject *Selection::_objectForXMLNode(Inkscape::XML::Node *repr) const {
g_return_val_if_fail(repr != NULL, NULL);
gchar const *id = repr->attribute("id");
g_return_val_if_fail(id != NULL, NULL);
SPObject *object=_layers->getDocument()->getObjectById(id);
g_return_val_if_fail(object != NULL, NULL);
return object;
}
size_t Selection::numberOfLayers() {
std::vector<SPItem*> const items = const_cast<Selection *>(this)->itemList();
std::set<SPObject*> layers;
for ( std::vector<SPItem*>::const_iterator iter=items.begin();iter!=items.end(); ++iter) {
SPObject *layer = _layers->layerForObject(*iter);
layers.insert(layer);
}
return layers.size();
}
size_t Selection::numberOfParents() {
std::vector<SPItem*> const items = const_cast<Selection *>(this)->itemList();
std::set<SPObject*> parents;
for ( std::vector<SPItem*>::const_iterator iter=items.begin();iter!=items.end(); ++iter) {
SPObject *parent = (*iter)->parent;
parents.insert(parent);
}
return parents.size();
}
void Selection::_emitSignals() {
_emitChanged();
}
void Selection::_connectSignals(SPObject *object) {
_modified_connections[object] = object->connectModified(sigc::mem_fun(*this, &Selection::_schedule_modified));
}
void Selection::_releaseSignals(SPObject *object) {
_modified_connections[object].disconnect();
_modified_connections.erase(object);
}
}
/*
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:fileencoding=utf-8:textwidth=99 :
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