/* === S Y N F I G ========================================================= */
/*! \file layerremove.cpp
** \brief Template File
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** Copyright (c) 2008 Chris Moore
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
** published by the Free Software Foundation; either version 2 of
** the License, or (at your option) any later version.
**
** This package is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
** General Public License for more details.
** \endlegal
*/
/* ========================================================================= */
/* === H E A D E R S ======================================================= */
#ifdef USING_PCH
# include "pch.h"
#else
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <synfig/general.h>
#include "layerremove.h"
#include <synfigapp/canvasinterface.h>
#include <synfigapp/localization.h>
#endif
using namespace std;
using namespace etl;
using namespace synfig;
using namespace synfigapp;
using namespace Action;
/* === M A C R O S ========================================================= */
ACTION_INIT_NO_GET_LOCAL_NAME(Action::LayerRemove);
ACTION_SET_NAME(Action::LayerRemove,"LayerRemove");
ACTION_SET_LOCAL_NAME(Action::LayerRemove,N_("Delete Layer"));
ACTION_SET_TASK(Action::LayerRemove,"remove");
ACTION_SET_CATEGORY(Action::LayerRemove,Action::CATEGORY_LAYER);
ACTION_SET_PRIORITY(Action::LayerRemove,0);
ACTION_SET_VERSION(Action::LayerRemove,"0.0");
ACTION_SET_CVS_ID(Action::LayerRemove,"$Id$");
/* === G L O B A L S ======================================================= */
/* === P R O C E D U R E S ================================================= */
/* === M E T H O D S ======================================================= */
Action::LayerRemove::LayerRemove()
{
}
synfig::String
Action::LayerRemove::get_local_name()const
{
return get_layer_descriptions(layer_list, _("Delete Layer"), _("Delete Layers"));
}
Action::ParamVocab
Action::LayerRemove::get_param_vocab()
{
ParamVocab ret(Action::CanvasSpecific::get_param_vocab());
ret.push_back(ParamDesc("layer",Param::TYPE_LAYER)
.set_local_name(_("Layer"))
.set_desc(_("Layer to be deleted"))
.set_supports_multiple()
);
return ret;
}
bool
Action::LayerRemove::is_candidate(const ParamList &x)
{
return candidate_check(get_param_vocab(),x);
}
bool
Action::LayerRemove::set_param(const synfig::String& name, const Action::Param ¶m)
{
if(name=="layer" && param.get_type()==Param::TYPE_LAYER)
{
std::pair<synfig::Layer::Handle,int> layer_pair;
layer_pair.first=param.get_layer();
layer_list.push_back(layer_pair);
return true;
}
return Action::CanvasSpecific::set_param(name,param);
}
bool
Action::LayerRemove::is_ready()const
{
if(layer_list.empty())
return false;
return Action::CanvasSpecific::is_ready();
}
void
Action::LayerRemove::perform()
{
std::list<std::pair<synfig::Layer::Handle,int> >::iterator iter;
for(iter=layer_list.begin();iter!=layer_list.end();++iter)
{
Layer::Handle layer(iter->first);
// int& depth(iter->second);
Canvas::Handle subcanvas(layer->get_canvas());
// Find the iterator for the layer
Canvas::iterator iter2=find(subcanvas->begin(),subcanvas->end(),layer);
// If we couldn't find the layer in the canvas, then bail
if(*iter2!=layer)
{
/*! \todo We should really undo all prior removals
** before we go throwing shit around */
throw Error(_("This layer doesn't exist anymore."));
}
// If the subcanvas isn't the same as the canvas,
// then it had better be an inline canvas. If not,
// bail
if(get_canvas()!=subcanvas && !subcanvas->is_inline())
{
/*! \todo We should really undo all prior removals
** before we go throwing shit around */
throw Error(_("This layer doesn't belong to this canvas anymore"));
}
set_canvas(subcanvas);
// Calculate the depth that the layer was at (For the undo)
iter->second=layer->get_depth();
// Mark ourselves as dirty if necessary
set_dirty(layer->active());
// Remove the layer from the canvas
subcanvas->erase(iter2);
// Signal that a layer has been removed
if(get_canvas_interface())
get_canvas_interface()->signal_layer_removed()(layer);
}
}
void
Action::LayerRemove::undo()
{
std::list<std::pair<synfig::Layer::Handle,int> >::reverse_iterator iter;
for(iter=layer_list.rbegin();iter!=layer_list.rend();++iter)
{
Layer::Handle layer(iter->first);
int& depth(iter->second);
// Set the layer's canvas
layer->set_canvas(get_canvas());
// Make sure that the depth is valid
if(get_canvas()->size()<depth)
depth=get_canvas()->size();
// Mark ourselves as dirty if necessary
set_dirty(layer->active());
// Insert the layer into the canvas at the desired depth
get_canvas()->insert(get_canvas()->byindex(depth), layer);
// Signal that a layer has been inserted
if(get_canvas_interface())
get_canvas_interface()->signal_layer_inserted()(layer,depth);
}
}