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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2013 CERN
* @author Maciej Suminski <maciej.suminski@cern.ch>
*
* This program 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 program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*
*/
/**
* @file view_group.cpp
* @brief VIEW_GROUP extends VIEW_ITEM by possibility of grouping items into a single object.
* VIEW_GROUP does not take over ownership of the held items. The main purpose of this class is
* to group items and draw them on a single layer (in particular the overlay).
*/
#include <set>
#include <algorithm>
#include <view/view_group.h>
#include <view/view.h>
#include <painter.h>
#include <gal/graphics_abstraction_layer.h>
#include <boost/foreach.hpp>
#include <layers_id_colors_and_visibility.h>
using namespace KIGFX;
VIEW_GROUP::VIEW_GROUP( VIEW* aView ) :
m_layer( ITEM_GAL_LAYER( GP_OVERLAY ) )
{
m_view = aView;
}
VIEW_GROUP::~VIEW_GROUP()
{
}
void VIEW_GROUP::Add( VIEW_ITEM* aItem )
{
m_items.insert( aItem );
}
void VIEW_GROUP::Remove( VIEW_ITEM* aItem )
{
m_items.erase( aItem );
}
void VIEW_GROUP::Clear()
{
m_items.clear();
}
unsigned int VIEW_GROUP::GetSize() const
{
return m_items.size();
}
const BOX2I VIEW_GROUP::ViewBBox() const
{
BOX2I maxBox;
maxBox.SetMaximum();
return maxBox;
}
void VIEW_GROUP::ViewDraw( int aLayer, GAL* aGal ) const
{
PAINTER* painter = m_view->GetPainter();
// Draw all items immediately (without caching)
BOOST_FOREACH( VIEW_ITEM* item, m_items )
{
aGal->PushDepth();
int layers[VIEW::VIEW_MAX_LAYERS], layers_count;
item->ViewGetLayers( layers, layers_count );
m_view->SortLayers( layers, layers_count );
for( int i = 0; i < layers_count; i++ )
{
if( m_view->IsCached( layers[i] ) && m_view->IsLayerVisible( layers[i] ) )
{
aGal->AdvanceDepth();
if( !painter->Draw( item, layers[i] ) )
item->ViewDraw( layers[i], aGal ); // Alternative drawing method
}
}
aGal->PopDepth();
}
}
void VIEW_GROUP::ViewGetLayers( int aLayers[], int& aCount ) const
{
// Everything is displayed on a single layer
aLayers[0] = m_layer;
aCount = 1;
}
void VIEW_GROUP::FreeItems()
{
BOOST_FOREACH( VIEW_ITEM* item, m_items )
{
delete item;
}
m_items.clear();
}
void VIEW_GROUP::ItemsSetVisibility( bool aVisible )
{
std::set<VIEW_ITEM*>::const_iterator it, it_end;
for( it = m_items.begin(), it_end = m_items.end(); it != it_end; ++it )
(*it)->ViewSetVisible( aVisible );
}
void VIEW_GROUP::ItemsViewUpdate( VIEW_ITEM::VIEW_UPDATE_FLAGS aFlags )
{
std::set<VIEW_ITEM*>::const_iterator it, it_end;
for( it = m_items.begin(), it_end = m_items.end(); it != it_end; ++it )
(*it)->ViewUpdate( aFlags );
}
void VIEW_GROUP::updateBbox()
{
// Save the used VIEW, as it used nulled during Remove()
VIEW* view = m_view;
// Reinsert the group, so the bounding box can be updated
view->Remove( this );
view->Add( this );
}
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