1 files changed, 162 insertions, 0 deletions
diff --git a/common/view/view_group.cpp b/common/view/view_group.cpp
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+++ b/common/view/view_group.cpp
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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 );
+}