01f9b2d7b2
fg_os_osgviewer.cxx: Enable mouse cursor change code on sufficiently recent osg versions.
331 lines
10 KiB
C++
331 lines
10 KiB
C++
#include <stdlib.h>
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#include <simgear/compiler.h>
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#include <simgear/structure/exception.hxx>
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#include <simgear/debug/logstream.hxx>
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#include <osg/GraphicsContext>
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#include <osg/Group>
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#include <osg/Matrixd>
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#include <osg/Viewport>
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#include <osg/Version>
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#include <osgViewer/StatsHandler>
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#include <osgViewer/Viewer>
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#include <osgGA/MatrixManipulator>
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#include "fg_os.hxx"
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#include "fg_props.hxx"
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#include "util.hxx"
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#include "globals.hxx"
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#include "renderer.hxx"
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#if ((1 == OSG_VERSION_MAJOR) && (9 == OSG_VERSION_MINOR) && \
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(8 <= OSG_VERSION_PATCH)) || \
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((1 == OSG_VERSION_MAJOR) && (9 < OSG_VERSION_MINOR)) || \
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(1 < OSG_VERSION_MAJOR)
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#define OSG_HAS_MOUSE_CURSOR_PATCH
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#endif
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// fg_os implementation using OpenSceneGraph's osgViewer::Viewer class
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// to create the graphics window and run the event/update/render loop.
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//
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// fg_os callback registration APIs
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//
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// Event handling and scene graph update is all handled by a
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// manipulator. See FGManipulator.cpp
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void fgRegisterIdleHandler(fgIdleHandler func)
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{
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globals->get_renderer()->getManipulator()->setIdleHandler(func);
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}
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void fgRegisterDrawHandler(fgDrawHandler func)
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{
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globals->get_renderer()->getManipulator()->setDrawHandler(func);
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}
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void fgRegisterWindowResizeHandler(fgWindowResizeHandler func)
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{
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globals->get_renderer()->getManipulator()->setWindowResizeHandler(func);
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}
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void fgRegisterKeyHandler(fgKeyHandler func)
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{
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globals->get_renderer()->getManipulator()->setKeyHandler(func);
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}
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void fgRegisterMouseClickHandler(fgMouseClickHandler func)
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{
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globals->get_renderer()->getManipulator()->setMouseClickHandler(func);
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}
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void fgRegisterMouseMotionHandler(fgMouseMotionHandler func)
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{
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globals->get_renderer()->getManipulator()->setMouseMotionHandler(func);
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}
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// Redraw "happens" every frame whether you want it or not.
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void fgRequestRedraw()
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{
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}
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//
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// fg_os implementation
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//
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static osg::ref_ptr<osgViewer::Viewer> viewer;
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static osg::ref_ptr<osg::Camera> mainCamera;
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void fgOSOpenWindow(int w, int h, int bpp,
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bool alpha, bool stencil, bool fullscreen)
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{
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osg::GraphicsContext::WindowingSystemInterface* wsi;
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wsi = osg::GraphicsContext::getWindowingSystemInterface();
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viewer = new osgViewer::Viewer;
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// Avoid complications with fg's custom drawables.
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std::string mode;
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mode = fgGetString("/sim/rendering/multithreading-mode", "SingleThreaded");
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if (mode == "AutomaticSelection")
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viewer->setThreadingModel(osgViewer::Viewer::AutomaticSelection);
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else if (mode == "CullDrawThreadPerContext")
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viewer->setThreadingModel(osgViewer::Viewer::CullDrawThreadPerContext);
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else if (mode == "DrawThreadPerContext")
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viewer->setThreadingModel(osgViewer::Viewer::DrawThreadPerContext);
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else if (mode == "CullThreadPerCameraDrawThreadPerContext")
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viewer->setThreadingModel(osgViewer::Viewer::CullThreadPerCameraDrawThreadPerContext);
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else
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viewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
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osg::ref_ptr<osg::GraphicsContext::Traits> traits;
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traits = new osg::GraphicsContext::Traits;
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int cbits = (bpp <= 16) ? 5 : 8;
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int zbits = (bpp <= 16) ? 16 : 24;
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traits->red = traits->green = traits->blue = cbits;
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traits->depth = zbits;
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if (alpha)
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traits->alpha = 8;
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if (stencil)
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traits->stencil = 8;
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traits->doubleBuffer = true;
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traits->mipMapGeneration = true;
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traits->windowName = "FlightGear";
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traits->sampleBuffers = fgGetBool("/sim/rendering/multi-sample-buffers", traits->sampleBuffers);
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traits->samples = fgGetBool("/sim/rendering/multi-samples", traits->samples);
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traits->vsync = fgGetBool("/sim/rendering/vsync-enable", traits->vsync);
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if (fullscreen) {
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unsigned width = 0;
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unsigned height = 0;
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wsi->getScreenResolution(*traits, width, height);
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traits->windowDecoration = false;
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traits->width = width;
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traits->height = height;
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traits->supportsResize = false;
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} else {
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traits->windowDecoration = true;
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traits->width = w;
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traits->height = h;
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#ifdef WIN32
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// Ugly Hack, why does CW_USEDEFAULT works like phase of the moon?
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traits->x = 100;
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traits->y = 100;
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#endif
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traits->supportsResize = true;
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}
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osg::Camera::ProjectionResizePolicy rsp = osg::Camera::VERTICAL;
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// Ok, first the children.
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// that achieves some magic ordering og the slaves so that we end up
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// in the main window more often.
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// This can be sorted out better when we got rid of glut and sdl.
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if (fgHasNode("/sim/rendering/camera")) {
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SGPropertyNode* renderingNode = fgGetNode("/sim/rendering");
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for (int i = 0; i < renderingNode->nChildren(); ++i) {
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SGPropertyNode* cameraNode = renderingNode->getChild(i);
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if (strcmp(cameraNode->getName(), "camera") != 0)
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continue;
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// get a new copy of the traits struct
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osg::ref_ptr<osg::GraphicsContext::Traits> cameraTraits;
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cameraTraits = new osg::GraphicsContext::Traits(*traits);
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double shearx = cameraNode->getDoubleValue("shear-x", 0);
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double sheary = cameraNode->getDoubleValue("shear-y", 0);
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cameraTraits->hostName = cameraNode->getStringValue("host-name", "");
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cameraTraits->displayNum = cameraNode->getIntValue("display", 0);
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cameraTraits->screenNum = cameraNode->getIntValue("screen", 0);
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if (cameraNode->getBoolValue("fullscreen", fullscreen)) {
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unsigned width = 0;
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unsigned height = 0;
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wsi->getScreenResolution(*cameraTraits, width, height);
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cameraTraits->windowDecoration = false;
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cameraTraits->width = width;
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cameraTraits->height = height;
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cameraTraits->supportsResize = false;
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} else {
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cameraTraits->windowDecoration = true;
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cameraTraits->width = cameraNode->getIntValue("width", w);
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cameraTraits->height = cameraNode->getIntValue("height", h);
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cameraTraits->supportsResize = true;
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}
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// FIXME, currently this is too much of a problem to route the resize
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// events. When we do no longer need sdl and such this
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// can be simplified
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cameraTraits->supportsResize = false;
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// ok found a camera configuration, add a new slave ...
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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osg::GraphicsContext* gc;
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gc = osg::GraphicsContext::createGraphicsContext(cameraTraits.get());
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gc->realize();
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camera->setGraphicsContext(gc);
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// If a viewport isn't set on the camera, then it's hard to dig it
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// out of the SceneView objects in the viewer, and the coordinates
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// of mouse events are somewhat bizzare.
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camera->setViewport(new osg::Viewport(0, 0, cameraTraits->width, cameraTraits->height));
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camera->setProjectionResizePolicy(rsp);
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viewer->addSlave(camera.get(), osg::Matrix::translate(-shearx, -sheary, 0), osg::Matrix());
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}
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}
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// now the main camera ...
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osg::ref_ptr<osg::Camera> camera = new osg::Camera;
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mainCamera = camera;
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osg::GraphicsContext* gc;
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gc = osg::GraphicsContext::createGraphicsContext(traits.get());
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gc->realize();
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gc->makeCurrent();
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camera->setGraphicsContext(gc);
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// If a viewport isn't set on the camera, then it's hard to dig it
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// out of the SceneView objects in the viewer, and the coordinates
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// of mouse events are somewhat bizzare.
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camera->setViewport(new osg::Viewport(0, 0, traits->width, traits->height));
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camera->setProjectionResizePolicy(rsp);
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viewer->addSlave(camera.get());
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viewer->setCameraManipulator(globals->get_renderer()->getManipulator());
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// Let FG handle the escape key with a confirmation
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viewer->setKeyEventSetsDone(0);
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osgViewer::StatsHandler* statsHandler = new osgViewer::StatsHandler;
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statsHandler->setKeyEventTogglesOnScreenStats('*');
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statsHandler->setKeyEventPrintsOutStats(0);
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viewer->addEventHandler(statsHandler);
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// The viewer won't start without some root.
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viewer->setSceneData(new osg::Group);
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globals->get_renderer()->setViewer(viewer.get());
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}
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static int status = 0;
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void fgOSExit(int code)
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{
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viewer->setDone(true);
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status = code;
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}
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void fgOSMainLoop()
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{
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viewer->run();
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fgExit(status);
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}
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int fgGetKeyModifiers()
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{
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return globals->get_renderer()->getManipulator()->getCurrentModifiers();
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}
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void fgWarpMouse(int x, int y)
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{
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// Hack, currently the pointer is just recentered. So, we know the relative coordinates ...
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viewer->requestWarpPointer(0, 0);
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}
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// Noop
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void fgOSInit(int* argc, char** argv)
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{
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}
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// Noop
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void fgOSFullScreen()
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{
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}
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#ifdef OSG_HAS_MOUSE_CURSOR_PATCH
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static void setMouseCursor(osg::Camera* camera, int cursor)
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{
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if (!camera)
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return;
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osg::GraphicsContext* gc = camera->getGraphicsContext();
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if (!gc)
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return;
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osgViewer::GraphicsWindow* gw;
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gw = dynamic_cast<osgViewer::GraphicsWindow*>(gc);
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if (!gw)
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return;
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osgViewer::GraphicsWindow::MouseCursor mouseCursor;
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mouseCursor = osgViewer::GraphicsWindow::InheritCursor;
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if (cursor == MOUSE_CURSOR_NONE)
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mouseCursor = osgViewer::GraphicsWindow::NoCursor;
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else if(cursor == MOUSE_CURSOR_POINTER)
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mouseCursor = osgViewer::GraphicsWindow::RightArrowCursor;
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else if(cursor == MOUSE_CURSOR_WAIT)
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mouseCursor = osgViewer::GraphicsWindow::WaitCursor;
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else if(cursor == MOUSE_CURSOR_CROSSHAIR)
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mouseCursor = osgViewer::GraphicsWindow::CrosshairCursor;
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else if(cursor == MOUSE_CURSOR_LEFTRIGHT)
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mouseCursor = osgViewer::GraphicsWindow::LeftRightCursor;
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gw->setCursor(mouseCursor);
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}
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#endif
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static int _cursor = -1;
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void fgSetMouseCursor(int cursor)
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{
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_cursor = cursor;
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#ifdef OSG_HAS_MOUSE_CURSOR_PATCH
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setMouseCursor(viewer->getCamera(), cursor);
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for (unsigned i = 0; i < viewer->getNumSlaves(); ++i)
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setMouseCursor(viewer->getSlave(i)._camera.get(), cursor);
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#endif
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}
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int fgGetMouseCursor()
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{
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return _cursor;
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}
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void fgMakeCurrent()
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{
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if (!mainCamera.valid())
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return;
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osg::GraphicsContext* gc = mainCamera->getGraphicsContext();
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if (!gc)
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return;
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gc->makeCurrent();
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}
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bool fgOSIsMainContext(const osg::GraphicsContext* context)
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{
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if (!mainCamera.valid())
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return false;
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return context == mainCamera->getGraphicsContext();
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}
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bool fgOSIsMainCamera(const osg::Camera* camera)
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{
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if (!camera)
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return false;
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if (camera == mainCamera.get())
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return true;
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if (!viewer.valid())
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return false;
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if (camera == viewer->getCamera())
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return true;
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return false;
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}
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