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flightgear/src/Canvas/canvas_mgr.cxx
Thomas Geymayer 83bbd9e45c Canvas: Image/Window unifying and allow using canvas inside canvas.
- Refactor and unify common functionality of canvas::Window and
   canvas::Image
 - Make canvas::Image actually work
 - Allow using canvases inside canvas::Image
   * Use new canvas:// "protocol" to allow using canvases in
     place of images
 - Prepare for categorizing canvases:
   * Move canvases to /canvas/by-index
   * Later support linking to other nodes in subbranches of
     /canvas
2012-08-09 16:13:38 +02:00

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C++

// Canvas with 2D rendering api
//
// 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 "canvas_mgr.hxx"
#include "canvas.hxx"
#include <boost/bind.hpp>
typedef boost::shared_ptr<Canvas> CanvasPtr;
CanvasPtr canvasFactory(SGPropertyNode* node)
{
return CanvasPtr(new Canvas(node));
}
//------------------------------------------------------------------------------
CanvasMgr::CanvasMgr():
PropertyBasedMgr("/canvas/by-index", "texture", &canvasFactory)
{
Canvas::addPlacementFactory
(
"object",
boost::bind
(
&FGODGauge::set_texture,
_1,
boost::bind(&Canvas::getTexture, _2),
boost::bind(&Canvas::getCullCallback, _2)
)
);
}
//------------------------------------------------------------------------------
CanvasPtr CanvasMgr::getCanvas(size_t index) const
{
if( index >= _elements.size()
|| !_elements[index] )
return CanvasPtr();
return boost::static_pointer_cast<Canvas>(_elements[index]);
}
//------------------------------------------------------------------------------
unsigned int CanvasMgr::getCanvasTexId(size_t index) const
{
CanvasPtr canvas = getCanvas(index);
if( canvas )
return canvas->getTexId();
else
return 0;
}