// Qt Viewer for libVRML97 // // Copyright (C) 1999 by Kenneth Bentley // // This software may be distributed under the terms of the Q // Public License, version 1.0 or later. Please see the file LICENSE for // terms. // based on libVRML97 by Chris Morley. and gtkLookat, by Erik Andersen // libVRML97 is Copyright (C) 1998,1999 Chris Morley (cmorley@vermontel.com) // gtkLookat is Copyright (C) 1998 by Erik Andersen under // the terms of the GNU Public License. Erik Anderson has granted permission to // license this derivative work under QPL. /** * mainWgt is our TopLevel widget (in standalone mode) , it contains an OpenGL * canvas (vGLWidget), and a viewer object (ViewerQt) which connects us to * libVRML97. * **/ #include "mainwgt.h" #include #include #include #include #include #include #include #include //libVRML97 includes #include //mdvh #include // vrml97 keyevents//mdvh #include "ViewerQt.h" // interface to libVRML97 #include "vGLWidget.h" // our openGL 'canvas' static void worldChangedCB( int reason ) { switch (reason) { case VrmlScene::DESTROY_WORLD: //delete vrmlScene; //fprintf(stderr, "worldChangedCB()\n"); GS.sig_destroy_world(); exit(0); break; } } mainWgt::mainWgt( QWidget *parent, const char *name ) : QWidget( parent, name ) { setMinimumSize( 50, 50); connect( this, SIGNAL(key_quit() ), qApp, SLOT(quit() ) ); connect( &GS, SIGNAL(destroy_scene() ), this, SLOT(SceneDestroy() ) ); canvas = new vGLWidget( this, "canvas" ); vrmlScene = new VrmlScene(); vrmlScene->addWorldChangedCallback( worldChangedCB ); worldChangedCB( VrmlScene::REPLACE_WORLD ); viewer = new ViewerQt( this, vrmlScene, canvas ); canvas->setViewerPtr( viewer ); // now they know each other // want status to handle LibVRML97 messages, and uistatus for local (GUI) stuff status = new QLabel( this, "status" ); status->setFrameStyle( QFrame::Panel | QFrame::Sunken ); status->setAlignment( AlignRight ); status->setFont( QFont("times",10,QFont::Normal) ); status->setFixedHeight( 20 ); status->setText( "" ); uistatus = new QLabel( this, "uistatus" ); uistatus->setFrameStyle( QFrame::Panel | QFrame::Sunken ); uistatus->setAlignment( AlignRight ); uistatus->setFont( QFont("times",10,QFont::Normal) ); uistatus->setFixedHeight( 20 ); uistatus->setText( "" ); viewer->timerUpdate(); } mainWgt::~mainWgt() { // being anal, since Qt deletes all parented widgets. // as such, delete order is important! delete vrmlScene; //vrmlScene may talk to theSystem during destruct, so delete it 1st. //while there's still a label (status) to receive messages. delete canvas; delete viewer; delete status; delete uistatus; } void mainWgt::resizeEvent( QResizeEvent * ) { canvas->resize( width() , height() - 20); uistatus->setGeometry(0, height() - 20, width() / 2 , status->height() ); status->setGeometry(width() /2 , height() - 20, width() / 2, status->height() ); } void mainWgt::load() { QString fn = QFileDialog::getOpenFileName(); if ( !fn.isEmpty() ) load( fn ); } void mainWgt::load( const char *fileName ) { int slen = strlen(fileName); QApplication::setOverrideCursor(waitCursor); if (vrmlScene && fileName){ char * msg = new char[slen + 30]; msg[slen+29] = '\0'; if (vrmlScene->load( fileName)) sprintf(msg, "Ok, file \"%s\" was loaded!\n", fileName); else sprintf(msg, "Rats! Error loading file \"%s\"\n", fileName); uistatus->setText(msg); delete [] msg; viewer->timerUpdate(); } QApplication::restoreOverrideCursor(); } void mainWgt::save() { } void mainWgt::print() { } void mainWgt::closeDoc() { close(); // will call closeEvent() } //void mainWgt::closeEvent( QCloseEvent * ) //{ //} void mainWgt::keyPressEvent( QKeyEvent *event ) { ViewerOpenGL::EventInfo e; e.event = ViewerOpenGL::EVENT_KEY_DOWN; switch ( event->key() ) { case Key_Home: e.what = ViewerOpenGL::KEY_HOME; uistatus->setText("resetting view"); break; case Key_Left: e.what = ViewerOpenGL::KEY_LEFT; uistatus->setText("stepping left"); break; case Key_Up: e.what = ViewerOpenGL::KEY_UP; uistatus->setText("stepping up"); break; case Key_Right: e.what = ViewerOpenGL::KEY_RIGHT; uistatus->setText("stepping right"); break; case Key_Down: e.what = ViewerOpenGL::KEY_DOWN; uistatus->setText("stepping down"); break; case Key_PageUp: e.what = ViewerOpenGL::KEY_PAGE_UP; break; case Key_PageDown: e.what = ViewerOpenGL::KEY_PAGE_DOWN; break; /* these are keys that libVRML97 handles as of 0.8.0. If that proves to be a moving target, we may relenquish all keys to libVRML97. But for now, we return unwanted keys lest other widgets want them; */ case Key_Comma: e.what = event->ascii() ; uistatus->setText("Look left"); break; case Key_A: e.what = event->ascii() ; uistatus->setText("Look up"); break; case Key_Z: e.what = event->ascii() ; uistatus->setText("Look down"); break; case Key_Period: e.what = event->ascii() ; uistatus->setText("Look right"); break; case Key_B: e.what = event->ascii() ; break; case Key_L: e.what = event->ascii() ; break; case Key_T: e.what = event->ascii() ; break; case Key_W: e.what = event->ascii() ; break; case Key_R: e.what = event->ascii() ; uistatus->setText("reset user navigation"); break; case Key_Slash: e.what = event->ascii() ; break; case Key_Q: e.what = event->ascii() ; uistatus->setText("aiiieeeeee...what to delete first?"); emit key_quit(); case Key_O: if ( event->state() & AltButton ) { /* open file--for stand-alone version */ load(); } break; default: event->ignore(); return; // avoid handleInput() } viewer->handleInput( &e ); } void mainWgt::sys_mesg(const char *mesg) { if (strlen(mesg) > 1 ) { if (status) status->setText(mesg); } } void mainWgt::SetStop( bool state) { viewer->SetStop(state); } void mainWgt::SceneDestroy( ) { delete vrmlScene; vrmlScene = 0; }