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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Editable view implementation
*
* Authors:
* Lauris Kaplinski <lauris@kaplinski.com>
* MenTaLguY <mental@rydia.net>
* bulia byak <buliabyak@users.sf.net>
* Ralf Stephan <ralf@ark.in-berlin.de>
* John Bintz <jcoswell@coswellproductions.org>
* Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
* Jon A. Cruz <jon@joncruz.org>
* Abhishek Sharma
*
* Copyright (C) 2007 Jon A. Cruz
* Copyright (C) 2006-2008 Johan Engelen
* Copyright (C) 2006 John Bintz
* Copyright (C) 2004 MenTaLguY
* Copyright (C) 1999-2002 Lauris Kaplinski
* Copyright (C) 2000-2001 Ximian, Inc.
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include "layer-model.h"
#include "document.h"
#include "layer-fns.h"
#include "object-hierarchy.h"
#include "object/sp-defs.h"
#include "object/sp-item.h"
#include "object/sp-item-group.h"
#include "object/sp-root.h"
// Callbacks
static void _layer_activated(SPObject *layer, Inkscape::LayerModel *layer_model);
static void _layer_deactivated(SPObject *layer, Inkscape::LayerModel *layer_model);
static void _layer_changed(SPObject *top, SPObject *bottom, Inkscape::LayerModel *layer_model);
namespace Inkscape {
LayerModel::LayerModel()
: _doc( nullptr )
, _layer_hierarchy( nullptr )
, _display_key( 0 )
{
}
LayerModel::~LayerModel()
{
if (_layer_hierarchy) {
delete _layer_hierarchy;
// _layer_hierarchy = NULL; //this should be here, but commented to find other bug somewhere else.
}
}
void LayerModel::setDocument(SPDocument *doc)
{
_doc = doc;
if (_layer_hierarchy) {
_layer_hierarchy->clear();
delete _layer_hierarchy;
}
_layer_hierarchy = new Inkscape::ObjectHierarchy(nullptr);
_layer_hierarchy->connectAdded(sigc::bind(sigc::ptr_fun(_layer_activated), this));
_layer_hierarchy->connectRemoved(sigc::bind(sigc::ptr_fun(_layer_deactivated), this));
_layer_hierarchy->connectChanged(sigc::bind(sigc::ptr_fun(_layer_changed), this));
_layer_hierarchy->setTop(doc->getRoot());
}
void LayerModel::setDisplayKey(unsigned int display_key)
{
_display_key = display_key;
}
SPDocument *LayerModel::getDocument()
{
return _doc;
}
/**
* Returns current root (=bottom) layer.
*/
SPObject *LayerModel::currentRoot() const
{
return _layer_hierarchy ? _layer_hierarchy->top() : nullptr;
}
/**
* Returns current top layer.
*/
SPObject *LayerModel::currentLayer() const
{
return _layer_hierarchy ? _layer_hierarchy->bottom() : nullptr;
}
/**
* Resets the bottom layer to the current root
*/
void LayerModel::reset() {
if (_layer_hierarchy) {
_layer_hierarchy->setBottom(currentRoot());
}
}
/**
* Sets the current layer of the desktop.
*
* Make \a object the top layer.
*/
void LayerModel::setCurrentLayer(SPObject *object) {
g_return_if_fail(SP_IS_GROUP(object));
g_return_if_fail( currentRoot() == object || (currentRoot() && currentRoot()->isAncestorOf(object)) );
// printf("Set Layer to ID: %s\n", object->getId());
_layer_hierarchy->setBottom(object);
}
void LayerModel::toggleHideAllLayers(bool hide) {
for ( SPObject* obj = Inkscape::previous_layer(currentRoot(), currentRoot()); obj; obj = Inkscape::previous_layer(currentRoot(), obj) ) {
SP_ITEM(obj)->setHidden(hide);
}
}
void LayerModel::toggleLockAllLayers(bool lock) {
for ( SPObject* obj = Inkscape::previous_layer(currentRoot(), currentRoot()); obj; obj = Inkscape::previous_layer(currentRoot(), obj) ) {
SP_ITEM(obj)->setLocked(lock);
}
}
void LayerModel::toggleLockOtherLayers(SPObject *object) {
g_return_if_fail(SP_IS_GROUP(object));
g_return_if_fail( currentRoot() == object || (currentRoot() && currentRoot()->isAncestorOf(object)) );
bool othersLocked = false;
std::vector<SPObject*> layers;
for ( SPObject* obj = Inkscape::next_layer(currentRoot(), object); obj; obj = Inkscape::next_layer(currentRoot(), obj) ) {
// Don't lock any ancestors, since that would in turn lock the layer as well
if (!obj->isAncestorOf(object)) {
layers.push_back(obj);
othersLocked |= !SP_ITEM(obj)->isLocked();
}
}
for ( SPObject* obj = Inkscape::previous_layer(currentRoot(), object); obj; obj = Inkscape::previous_layer(currentRoot(), obj) ) {
if (!obj->isAncestorOf(object)) {
layers.push_back(obj);
othersLocked |= !SP_ITEM(obj)->isLocked();
}
}
SPItem *item = SP_ITEM(object);
if ( item->isLocked() ) {
item->setLocked(false);
}
for (auto & layer : layers) {
SP_ITEM(layer)->setLocked(othersLocked);
}
}
void LayerModel::toggleLayerSolo(SPObject *object) {
g_return_if_fail(SP_IS_GROUP(object));
g_return_if_fail( currentRoot() == object || (currentRoot() && currentRoot()->isAncestorOf(object)) );
bool othersShowing = false;
std::vector<SPObject*> layers;
for ( SPObject* obj = Inkscape::next_layer(currentRoot(), object); obj; obj = Inkscape::next_layer(currentRoot(), obj) ) {
// Don't hide ancestors, since that would in turn hide the layer as well
if (!obj->isAncestorOf(object)) {
layers.push_back(obj);
othersShowing |= !SP_ITEM(obj)->isHidden();
}
}
for ( SPObject* obj = Inkscape::previous_layer(currentRoot(), object); obj; obj = Inkscape::previous_layer(currentRoot(), obj) ) {
if (!obj->isAncestorOf(object)) {
layers.push_back(obj);
othersShowing |= !SP_ITEM(obj)->isHidden();
}
}
SPItem *item = SP_ITEM(object);
if ( item->isHidden() ) {
item->setHidden(false);
}
for (auto & layer : layers) {
SP_ITEM(layer)->setHidden(othersShowing);
}
}
/**
* Return layer that contains \a object.
*/
SPObject *LayerModel::layerForObject(SPObject *object) {
g_return_val_if_fail(object != nullptr, NULL);
SPObject *root=currentRoot();
object = object->parent;
while ( object && object != root && !isLayer(object) ) {
// Objects in defs have no layer and are NOT in the root layer
if(SP_IS_DEFS(object))
return nullptr;
object = object->parent;
}
return object;
}
/**
* True if object is a layer.
*/
bool LayerModel::isLayer(SPObject *object) const {
return ( SP_IS_GROUP(object)
&& ( SP_GROUP(object)->effectiveLayerMode(_display_key)
== SPGroup::LAYER ) );
}
} // namespace Inkscape
/// Callback
static void
_layer_activated(SPObject *layer, Inkscape::LayerModel *layer_model) {
g_return_if_fail(SP_IS_GROUP(layer));
layer_model->_layer_activated_signal.emit(layer);
}
/// Callback
static void
_layer_deactivated(SPObject *layer, Inkscape::LayerModel *layer_model) {
g_return_if_fail(SP_IS_GROUP(layer));
layer_model->_layer_deactivated_signal.emit(layer);
}
/// Callback
static void
_layer_changed(SPObject *top, SPObject *bottom, Inkscape::LayerModel *layer_model)
{
layer_model->_layer_changed_signal.emit (top, bottom);
}
/*
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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