131 lines
3.5 KiB
C++
131 lines
3.5 KiB
C++
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// Viewer.hxx -- alternative flightgear viewer application
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//
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// Copyright (C) 2009 - 2012 Mathias Froehlich
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "Drawable.hxx"
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#include "Viewer.hxx"
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#include <simgear/structure/SGWeakPtr.hxx>
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namespace fgviewer {
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class Drawable::_ResizedCallback : public osg::GraphicsContext::ResizedCallback {
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public:
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_ResizedCallback(Drawable* drawable) :
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_drawable(drawable)
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{ }
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virtual ~_ResizedCallback()
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{ }
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virtual void resizedImplementation(osg::GraphicsContext*, int x, int y, int width, int height)
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{
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SGSharedPtr<Drawable> drawable = _drawable.lock();
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if (!drawable.valid())
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return;
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drawable->resize(x, y, width, height);
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}
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SGWeakPtr<Drawable> _drawable;
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};
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Drawable::Drawable(const std::string& name) :
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_name(name),
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_position(0, 0),
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_size(600, 800),
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_offscreen(false),
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_fullscreen(false)
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{
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}
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Drawable::~Drawable()
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{
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}
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void
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Drawable::attachSlaveCamera(SlaveCamera* slaveCamera)
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{
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if (!slaveCamera)
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return;
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_slaveCameraList.push_back(slaveCamera);
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}
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bool
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Drawable::resize(int x, int y, int width, int height)
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{
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unsigned numCameras = _slaveCameraList.size();
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if (1 < numCameras)
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return false;
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_graphicsContext->resizedImplementation(x, y, width, height);
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if (numCameras < 1)
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return true;
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_slaveCameraList.front()->setViewport(SGVec4i(0, 0, width, height));
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return true;
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}
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bool
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Drawable::realize(Viewer& viewer)
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{
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if (_graphicsContext.valid())
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return false;
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_graphicsContext = _realizeImplementation(viewer);
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if (!_graphicsContext.valid())
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return false;
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_graphicsContext->setResizedCallback(new _ResizedCallback(this));
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return true;
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}
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osg::GraphicsContext*
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Drawable::_realizeImplementation(Viewer& viewer)
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{
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osg::ref_ptr<osg::GraphicsContext::Traits> traits = _getTraits(viewer);
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return viewer.createGraphicsContext(traits.get());
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}
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osg::ref_ptr<osg::GraphicsContext::Traits>
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Drawable::_getTraits(Viewer& viewer)
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{
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osg::GraphicsContext::ScreenIdentifier screenIdentifier;
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screenIdentifier.setScreenIdentifier(_screenIdentifier);
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osg::ref_ptr<osg::GraphicsContext::Traits> traits;
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traits = viewer.getTraits(screenIdentifier);
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// The window name as displayed by the window manager
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traits->windowName = getName();
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traits->x = _position[0];
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traits->y = _position[1];
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if (!_fullscreen) {
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traits->width = _size[0];
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traits->height = _size[1];
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}
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traits->windowDecoration = !_fullscreen;
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if (_slaveCameraList.size() <= 1)
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traits->supportsResize = true;
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else
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traits->supportsResize = false;
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traits->pbuffer = _offscreen;
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return traits;
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}
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} // namespace fgviewer
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