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flightgear/src/Canvas/property_helper.cxx
Thomas Geymayer 8a6a234653 Canvas: First version of new Canvas GUI system.
- Refactor CanvasMgr into PropertyBasedMgr to be also used
   for the Canvas GUI system.
 - Get rid of tied properties in the Canvas system.
 - Add new placement type 'window' for placing canvases onto
   windows
 - Pass mouse events to Window class (only if cursor is over
   window)
 - Refactor canvas placement clean up
2012-07-31 23:19:23 +02:00

59 lines
2.2 KiB
C++

// Some helper functions for accessing the property tree
//
// Copyright (C) 2012 Thomas Geymayer <tomgey@gmail.com>
//
// 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, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include "property_helper.hxx"
#include <cassert>
namespace canvas
{
//----------------------------------------------------------------------------
void linkColorNodes( const char* name,
SGPropertyNode* parent,
std::vector<SGPropertyNode_ptr>& nodes,
const osg::Vec4& def )
{
static const char* channels[] = {"red", "green", "blue", "alpha"};
static const size_t num_channels = sizeof(channels)/sizeof(channels[0]);
assert(name);
assert(parent);
// Don't tie to allow the usage of aliases
SGPropertyNode_ptr color = parent->getChild(name, 0, true);
// We need to be carefull do not get any unitialized nodes or null pointers
// because while creating the node a valueChanged event will be triggered.
nodes.clear();
nodes.reserve(num_channels);
for( size_t i = 0; i < num_channels; ++i )
nodes.push_back( getChildDefault(color, channels[i], def[i]) );
}
//----------------------------------------------------------------------------
void triggerChangeRecursive(SGPropertyNode* node)
{
node->getParent()->fireChildAdded(node);
if( node->nChildren() == 0 && node->getType() != simgear::props::NONE )
return node->fireValueChanged();
for( int i = 0; i < node->nChildren(); ++i )
triggerChangeRecursive( node->getChild(i) );
}
}