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flightgear/src/Viewer/fg_os_osgviewer.cxx
Thomas Geymayer ba088d9f1e Fix warnings identified by gcc.
2013-07-04 23:07:36 +02:00

494 lines
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// fg_os_osgviewer.cxx -- common functions for fg_os interface
// implemented as an osgViewer
//
// Copyright (C) 2007 Tim Moore timoore@redhat.com
// Copyright (C) 2007 Mathias Froehlich
//
// 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.
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <algorithm>
#include <iostream>
#include <sstream>
#include <string>
#include <stdlib.h>
#include <boost/foreach.hpp>
#include <simgear/compiler.h>
#include <simgear/structure/exception.hxx>
#include <simgear/debug/logstream.hxx>
#include <simgear/props/props_io.hxx>
#include <osg/Camera>
#include <osg/GraphicsContext>
#include <osg/Group>
#include <osg/Matrixd>
#include <osg/Viewport>
#include <osg/Version>
#include <osg/Notify>
#include <osg/View>
#include <osgViewer/ViewerEventHandlers>
#include <osgViewer/Viewer>
#include <osgViewer/GraphicsWindow>
#include <Scenery/scenery.hxx>
#include <Main/fg_os.hxx>
#include <Main/fg_props.hxx>
#include <Main/util.hxx>
#include <Main/globals.hxx>
#include "renderer.hxx"
#include "CameraGroup.hxx"
#include "FGEventHandler.hxx"
#include "WindowBuilder.hxx"
#include "WindowSystemAdapter.hxx"
// Static linking of OSG needs special macros
#ifdef OSG_LIBRARY_STATIC
#include <osgDB/Registry>
USE_GRAPHICSWINDOW();
// Image formats
USE_OSGPLUGIN(bmp);
USE_OSGPLUGIN(dds);
USE_OSGPLUGIN(hdr);
USE_OSGPLUGIN(pic);
USE_OSGPLUGIN(pnm);
USE_OSGPLUGIN(rgb);
USE_OSGPLUGIN(tga);
#ifdef OSG_JPEG_ENABLED
USE_OSGPLUGIN(jpeg);
#endif
#ifdef OSG_PNG_ENABLED
USE_OSGPLUGIN(png);
#endif
#ifdef OSG_TIFF_ENABLED
USE_OSGPLUGIN(tiff);
#endif
// Model formats
USE_OSGPLUGIN(3ds);
USE_OSGPLUGIN(ac);
USE_OSGPLUGIN(ive);
USE_OSGPLUGIN(osg);
USE_OSGPLUGIN(txf);
#endif
// fg_os implementation using OpenSceneGraph's osgViewer::Viewer class
// to create the graphics window and run the event/update/render loop.
//
// fg_os implementation
//
using namespace std;
using namespace flightgear;
using namespace osg;
static osg::ref_ptr<osgViewer::Viewer> viewer;
static osg::ref_ptr<osg::Camera> mainCamera;
static void setStereoMode( const char * mode )
{
DisplaySettings::StereoMode stereoMode = DisplaySettings::QUAD_BUFFER;
bool stereoOn = true;
if (strcmp(mode,"QUAD_BUFFER")==0)
{
stereoMode = DisplaySettings::QUAD_BUFFER;
}
else if (strcmp(mode,"ANAGLYPHIC")==0)
{
stereoMode = DisplaySettings::ANAGLYPHIC;
}
else if (strcmp(mode,"HORIZONTAL_SPLIT")==0)
{
stereoMode = DisplaySettings::HORIZONTAL_SPLIT;
}
else if (strcmp(mode,"VERTICAL_SPLIT")==0)
{
stereoMode = DisplaySettings::VERTICAL_SPLIT;
}
else if (strcmp(mode,"LEFT_EYE")==0)
{
stereoMode = DisplaySettings::LEFT_EYE;
}
else if (strcmp(mode,"RIGHT_EYE")==0)
{
stereoMode = DisplaySettings::RIGHT_EYE;
}
else if (strcmp(mode,"HORIZONTAL_INTERLACE")==0)
{
stereoMode = DisplaySettings::HORIZONTAL_INTERLACE;
}
else if (strcmp(mode,"VERTICAL_INTERLACE")==0)
{
stereoMode = DisplaySettings::VERTICAL_INTERLACE;
}
else if (strcmp(mode,"CHECKERBOARD")==0)
{
stereoMode = DisplaySettings::CHECKERBOARD;
} else {
stereoOn = false;
}
DisplaySettings::instance()->setStereo( stereoOn );
DisplaySettings::instance()->setStereoMode( stereoMode );
}
static const char * getStereoMode()
{
DisplaySettings::StereoMode stereoMode = DisplaySettings::instance()->getStereoMode();
bool stereoOn = DisplaySettings::instance()->getStereo();
if( !stereoOn ) return "OFF";
if( stereoMode == DisplaySettings::QUAD_BUFFER ) {
return "QUAD_BUFFER";
} else if( stereoMode == DisplaySettings::ANAGLYPHIC ) {
return "ANAGLYPHIC";
} else if( stereoMode == DisplaySettings::HORIZONTAL_SPLIT ) {
return "HORIZONTAL_SPLIT";
} else if( stereoMode == DisplaySettings::VERTICAL_SPLIT ) {
return "VERTICAL_SPLIT";
} else if( stereoMode == DisplaySettings::LEFT_EYE ) {
return "LEFT_EYE";
} else if( stereoMode == DisplaySettings::RIGHT_EYE ) {
return "RIGHT_EYE";
} else if( stereoMode == DisplaySettings::HORIZONTAL_INTERLACE ) {
return "HORIZONTAL_INTERLACE";
} else if( stereoMode == DisplaySettings::VERTICAL_INTERLACE ) {
return "VERTICAL_INTERLACE";
} else if( stereoMode == DisplaySettings::CHECKERBOARD ) {
return "CHECKERBOARD";
}
return "OFF";
}
/**
* merge OSG output into our logging system, so it gets recorded to file,
* and so we can display a GUI console with renderer issues, especially
* shader compilation warnings and errors.
*/
class NotifyLogger : public osg::NotifyHandler
{
public:
// note this callback will be invoked by OSG from multiple threads.
// fortunately our Simgear logging implementation already handles
// that internally, so we simply pass the message on.
virtual void notify(osg::NotifySeverity severity, const char *message)
{
SG_LOG(SG_GL, translateSeverity(severity), message);
}
private:
sgDebugPriority translateSeverity(osg::NotifySeverity severity)
{
switch (severity) {
case osg::ALWAYS:
case osg::FATAL: return SG_ALERT;
case osg::WARN: return SG_WARN;
case osg::NOTICE:
case osg::INFO: return SG_INFO;
case osg::DEBUG_FP:
case osg::DEBUG_INFO: return SG_DEBUG;
default: return SG_ALERT;
}
}
};
void fgOSOpenWindow(bool stencil)
{
osg::setNotifyHandler(new NotifyLogger);
//osg::setNotifyLevel(osg::DEBUG_INFO);
viewer = new osgViewer::Viewer;
viewer->setDatabasePager(FGScenery::getPagerSingleton());
CameraGroup* cameraGroup = 0;
std::string mode;
mode = fgGetString("/sim/rendering/multithreading-mode", "SingleThreaded");
if (mode == "AutomaticSelection")
viewer->setThreadingModel(osgViewer::Viewer::AutomaticSelection);
else if (mode == "CullDrawThreadPerContext")
viewer->setThreadingModel(osgViewer::Viewer::CullDrawThreadPerContext);
else if (mode == "DrawThreadPerContext")
viewer->setThreadingModel(osgViewer::Viewer::DrawThreadPerContext);
else if (mode == "CullThreadPerCameraDrawThreadPerContext")
viewer->setThreadingModel(osgViewer::Viewer::CullThreadPerCameraDrawThreadPerContext);
else
viewer->setThreadingModel(osgViewer::Viewer::SingleThreaded);
WindowBuilder::initWindowBuilder(stencil);
WindowBuilder *windowBuilder = WindowBuilder::getWindowBuilder();
// Look for windows, camera groups, and the old syntax of
// top-level cameras
SGPropertyNode* renderingNode = fgGetNode("/sim/rendering");
SGPropertyNode* cgroupNode = renderingNode->getNode("camera-group", true);
bool oldSyntax = !cgroupNode->hasChild("camera");
if (oldSyntax) {
for (int i = 0; i < renderingNode->nChildren(); ++i) {
SGPropertyNode* propNode = renderingNode->getChild(i);
const char* propName = propNode->getName();
if (!strcmp(propName, "window") || !strcmp(propName, "camera")) {
SGPropertyNode* copiedNode
= cgroupNode->getNode(propName, propNode->getIndex(), true);
copyProperties(propNode, copiedNode);
}
}
vector<SGPropertyNode_ptr> cameras = cgroupNode->getChildren("camera");
SGPropertyNode* masterCamera = 0;
BOOST_FOREACH(SGPropertyNode_ptr& camera, cameras) {
if (camera->getDoubleValue("shear-x", 0.0) == 0.0
&& camera->getDoubleValue("shear-y", 0.0) == 0.0) {
masterCamera = camera.ptr();
break;
}
}
if (!masterCamera) {
masterCamera = cgroupNode->getChild("camera", cameras.size(), true);
setValue(masterCamera->getNode("window/name", true),
windowBuilder->getDefaultWindowName());
}
SGPropertyNode* nameNode = masterCamera->getNode("window/name");
if (nameNode)
setValue(cgroupNode->getNode("gui/window/name", true),
nameNode->getStringValue());
}
cameraGroup = CameraGroup::buildCameraGroup(viewer.get(), cgroupNode);
Camera* guiCamera = getGUICamera(cameraGroup);
if (guiCamera) {
Viewport* guiViewport = guiCamera->getViewport();
fgSetInt("/sim/startup/xsize", guiViewport->width());
fgSetInt("/sim/startup/ysize", guiViewport->height());
}
FGEventHandler* manipulator = globals->get_renderer()->getEventHandler();
WindowSystemAdapter* wsa = WindowSystemAdapter::getWSA();
if (wsa->windows.size() != 1) {
manipulator->setResizable(false);
}
viewer->getCamera()->setProjectionResizePolicy(osg::Camera::FIXED);
viewer->addEventHandler(manipulator);
// Let FG handle the escape key with a confirmation
viewer->setKeyEventSetsDone(0);
// The viewer won't start without some root.
viewer->setSceneData(new osg::Group);
globals->get_renderer()->setViewer(viewer.get());
CameraGroup::setDefault(cameraGroup);
DisplaySettings * displaySettings = DisplaySettings::instance();
fgTie("/sim/rendering/osg-displaysettings/eye-separation", displaySettings, &DisplaySettings::getEyeSeparation, &DisplaySettings::setEyeSeparation );
fgTie("/sim/rendering/osg-displaysettings/screen-distance", displaySettings, &DisplaySettings::getScreenDistance, &DisplaySettings::setScreenDistance );
fgTie("/sim/rendering/osg-displaysettings/screen-width", displaySettings, &DisplaySettings::getScreenWidth, &DisplaySettings::setScreenWidth );
fgTie("/sim/rendering/osg-displaysettings/screen-height", displaySettings, &DisplaySettings::getScreenHeight, &DisplaySettings::setScreenHeight );
fgTie("/sim/rendering/osg-displaysettings/stereo-mode", getStereoMode, setStereoMode );
fgTie("/sim/rendering/osg-displaysettings/double-buffer", displaySettings, &DisplaySettings::getDoubleBuffer, &DisplaySettings::setDoubleBuffer );
fgTie("/sim/rendering/osg-displaysettings/depth-buffer", displaySettings, &DisplaySettings::getDepthBuffer, &DisplaySettings::setDepthBuffer );
fgTie("/sim/rendering/osg-displaysettings/rgb", displaySettings, &DisplaySettings::getRGB, &DisplaySettings::setRGB );
}
static int status = 0;
void fgOSExit(int code)
{
viewer->setDone(true);
viewer->getDatabasePager()->cancel();
status = code;
}
int fgOSMainLoop()
{
ref_ptr<FGEventHandler> manipulator
= globals->get_renderer()->getEventHandler();
viewer->setReleaseContextAtEndOfFrameHint(false);
if (!viewer->isRealized())
viewer->realize();
while (!viewer->done()) {
fgIdleHandler idleFunc = manipulator->getIdleHandler();
if (idleFunc)
(*idleFunc)();
globals->get_renderer()->update();
viewer->frame( globals->get_sim_time_sec() );
}
return status;
}
int fgGetKeyModifiers()
{
if (!globals->get_renderer()) { // happens during shutdown
return 0;
}
return globals->get_renderer()->getEventHandler()->getCurrentModifiers();
}
void fgWarpMouse(int x, int y)
{
warpGUIPointer(CameraGroup::getDefault(), x, y);
}
void fgOSInit(int* argc, char** argv)
{
globals->get_renderer()->init();
WindowSystemAdapter::setWSA(new WindowSystemAdapter);
}
void fgOSFullScreen()
{
std::vector<osgViewer::GraphicsWindow*> windows;
viewer->getWindows(windows);
if (windows.size() == 0)
return; // Huh?!?
/* Toggling window fullscreen is only supported for the main GUI window.
* The other windows should use fixed setup from the camera.xml file anyway. */
osgViewer::GraphicsWindow* window = windows[0];
{
osg::GraphicsContext::WindowingSystemInterface *wsi = osg::GraphicsContext::getWindowingSystemInterface();
if (wsi == NULL)
{
SG_LOG(SG_VIEW, SG_ALERT, "ERROR: No WindowSystemInterface available. Cannot toggle window fullscreen.");
return;
}
static int previous_x = 0;
static int previous_y = 0;
static int previous_width = 800;
static int previous_height = 600;
unsigned int screenWidth;
unsigned int screenHeight;
wsi->getScreenResolution(*(window->getTraits()), screenWidth, screenHeight);
int x;
int y;
int width;
int height;
window->getWindowRectangle(x, y, width, height);
/* Note: the simple "is window size == screen size" check to detect full screen state doesn't work with
* X screen servers in Xinerama mode, since the reported screen width (or height) exceeds the maximum width
* (or height) usable by a single window (Xserver automatically shrinks/moves the full screen window to fit a
* single display) - so we detect full screen mode using "WindowDecoration" state instead.
* "false" - even when a single window is display in fullscreen */
//bool isFullScreen = x == 0 && y == 0 && width == (int)screenWidth && height == (int)screenHeight;
bool isFullScreen = !window->getWindowDecoration();
SG_LOG(SG_VIEW, SG_DEBUG, "Toggling fullscreen. Previous window rectangle ("
<< x << ", " << y << ") x (" << width << ", " << height << "), fullscreen: " << isFullScreen
<< ", number of screens: " << wsi->getNumScreens());
if (isFullScreen)
{
// limit x,y coordinates and window size to screen area
if (previous_x + previous_width > (int)screenWidth)
previous_x = 0;
if (previous_y + previous_height > (int)screenHeight)
previous_y = 0;
// disable fullscreen mode, restore previous window size/coordinates
x = previous_x;
y = previous_y;
width = previous_width;
height = previous_height;
}
else
{
// remember previous setting
previous_x = x;
previous_y = y;
previous_width = width;
previous_height = height;
// enable fullscreen mode, set new width/height
x = 0;
y = 0;
width = screenWidth;
height = screenHeight;
}
// set xsize/ysize properties to adapt GUI planes
fgSetInt("/sim/startup/xsize", width);
fgSetInt("/sim/startup/ysize", height);
// reconfigure window
window->setWindowDecoration(isFullScreen);
window->setWindowRectangle(x, y, width, height);
window->grabFocusIfPointerInWindow();
}
}
static void setMouseCursor(osgViewer::GraphicsWindow* gw, int cursor)
{
if (!gw) {
return;
}
osgViewer::GraphicsWindow::MouseCursor mouseCursor;
mouseCursor = osgViewer::GraphicsWindow::InheritCursor;
if (cursor == MOUSE_CURSOR_NONE)
mouseCursor = osgViewer::GraphicsWindow::NoCursor;
else if(cursor == MOUSE_CURSOR_POINTER)
#ifdef SG_MAC
// osgViewer-Cocoa lacks RightArrowCursor, use Left
mouseCursor = osgViewer::GraphicsWindow::LeftArrowCursor;
#else
mouseCursor = osgViewer::GraphicsWindow::RightArrowCursor;
#endif
else if(cursor == MOUSE_CURSOR_WAIT)
mouseCursor = osgViewer::GraphicsWindow::WaitCursor;
else if(cursor == MOUSE_CURSOR_CROSSHAIR)
mouseCursor = osgViewer::GraphicsWindow::CrosshairCursor;
else if(cursor == MOUSE_CURSOR_LEFTRIGHT)
mouseCursor = osgViewer::GraphicsWindow::LeftRightCursor;
else if(cursor == MOUSE_CURSOR_TOPSIDE)
mouseCursor = osgViewer::GraphicsWindow::TopSideCursor;
else if(cursor == MOUSE_CURSOR_BOTTOMSIDE)
mouseCursor = osgViewer::GraphicsWindow::BottomSideCursor;
else if(cursor == MOUSE_CURSOR_LEFTSIDE)
mouseCursor = osgViewer::GraphicsWindow::LeftSideCursor;
else if(cursor == MOUSE_CURSOR_RIGHTSIDE)
mouseCursor = osgViewer::GraphicsWindow::RightSideCursor;
else if(cursor == MOUSE_CURSOR_TOPLEFT)
mouseCursor = osgViewer::GraphicsWindow::TopLeftCorner;
else if(cursor == MOUSE_CURSOR_TOPRIGHT)
mouseCursor = osgViewer::GraphicsWindow::TopRightCorner;
else if(cursor == MOUSE_CURSOR_BOTTOMLEFT)
mouseCursor = osgViewer::GraphicsWindow::BottomLeftCorner;
else if(cursor == MOUSE_CURSOR_BOTTOMRIGHT)
mouseCursor = osgViewer::GraphicsWindow::BottomRightCorner;
gw->setCursor(mouseCursor);
}
static int _cursor = -1;
void fgSetMouseCursor(int cursor)
{
_cursor = cursor;
std::vector<osgViewer::GraphicsWindow*> windows;
viewer->getWindows(windows);
BOOST_FOREACH(osgViewer::GraphicsWindow* gw, windows) {
setMouseCursor(gw, cursor);
}
}
int fgGetMouseCursor()
{
return _cursor;
}
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