globjwin.c

任意给定三维空间的点集

/****************************************************************************
** $Id: globjwin.cpp,v 1.6 1999/01/22 08:01:00 aavit Exp $
**
** ImPlementation of GLObjectWindow widget class
**
****************************************************************************/

#include   <stdio.h>
#include   <qpushbutton.h>
#include   <qslider.h>
#include   <qlayout.h>
#include   <qframe.h>
#include   <qmenubar.h>
#include   <qpopupmenu.h>
#include   <qapplication.h>
#include   <qkeycode.h>
#include   <qnamespace.h>
#include   <qfiledialog.h>
#include   <math.h>

#include   <ctype.h>
#include   <time.h>
#include   <stdlib.h>
#include   <assert.h>

#include  "_generic.h"
#include  "sarray.h"
#include  "real.h"
#include  "point.h"
//#include  "glwindow.h"
#include  "glbox.h"

#include  "globjwin.h"
#include  "glbox.h"


static  bool   is_exist( char  * filename ) 
{
    FILE  * fl;

    fl = fopen( filename, "rt" );
    if  ( fl == NULL ) 
        return  false;

    fclose( fl );
    return  true;
}


void  GLObjectWindow::write_status( char  * filename )
{
    FILE  * fl;

    if  ( is_exist( filename ) ) {
        printf( "can not rewrite file: [%s]\n", filename );
        return;
    }

    fl = fopen( filename, "wt" );
    if  ( fl == NULL ) {
        printf( "Unable to open file; [%s]\n", filename );
        return;
    }

    fclose( fl );
}


void  GLObjectWindow::read_status( char  * filename )
{
    FILE  * fl;

    fl = fopen( filename, "rt" );
    if  ( fl == NULL ) {
        printf( "Unable to open file; [%s]\n", filename );
        return;
    }


    fclose( fl );

    object_win->setUpdateGL( false );

    object_win->resetDisplay();

    //object_win->setUpdateGL( true );
    //object_win->myUpdateGL();
}


void GLObjectWindow::keyPressEvent( QKeyEvent *k )
{
    switch  ( k->key() ) {
    case  Key_F1 :
        write_status( "status.txt" );
        return;

    case  Key_F2 :
        read_status( "status.txt" );
        return;
    };

    switch ( k->ascii() ) {        
        
    case  27:                               // quit
        exit( 0 );
        break;
        
    default:
        //object_win->keyPressEvent( k );        
        break;
    }
}


QMenuBar  * GLObjectWindow::compute_menu( GLObjectWindow  * ptr )
{
    // Create a menu
    QPopupMenu *file = new QPopupMenu();
    
    CHECK_PTR( file );

    file->insertItem( "E&xit",  qApp, SLOT(quit()), Qt::CTRL
                      + Qt::Key_Q );
    
    // Create a menu bar
    QMenuBar *m = new QMenuBar( ptr );
    m->setSeparator( QMenuBar::InWindowsStyle );
    m->insertItem("&File", file );

    return  m;
}



void   GLObjectWindow::btnLoadClicked()
{
    QString fileName = QFileDialog::getOpenFileName();
    if ( fileName.isNull() )
        return;
    object_win->load( (const char *)fileName );
}


void   GLObjectWindow::btnDiameterClicked()
{
    object_win->comp_diameter();
}


QPushButton  * addButton( QWidget  * top, 
                          char  * str, char  * id_str, 
                          QBoxLayout   * layout )
{
    QPushButton  * qb = new QPushButton( top, id_str );
    qb->setText( str );
    qb->setFixedHeight( qb->sizeHint().height() );
    //layout->addStretch( 1 );
    layout->addWidget( qb, 100 ); //, 0, AlignLeft );

    return  qb;
}

GLObjectWindow::GLObjectWindow( QWidget* parent, const char* name,
                                Terrain  * tr )
    : QWidget( parent, name )
{
    QMenuBar  * menu;
    menu = compute_menu( this );

    QBoxLayout* vlayout_main = new QVBoxLayout( this, 20, 20, "vlayout_main");
    //QHBoxLayout* hlayout = new QHBoxLayout();

    vlayout_main->setMenuBar( menu );

    setMinimumSize( 700, 500 );

    // Create a nice frame to put around the OpenGL widget
    QFrame* frame = new QFrame( this, "frame" );
    frame->setFrameStyle( QFrame::Sunken | QFrame::Panel );
    frame->setLineWidth( 2 );

    // Create our OpenGL widget
    GLBox* gl_window = new GLBox( frame, "glbox" );
    object_win = gl_window;
    //gl_window->setMinimumWidth( 100 );
    //gl_window->setMinimumHeight( 100 );

    //QVBoxLayout* vlayout = new QVBoxLayout( this, 0, 20, "vlayout");

    // Create the three sliders; one for each rotation axis
    //QVBoxLayout* vlayout = new QVBoxLayout();//this, 0, 20, "vlayout");

    // Put the GL widget inside the frame
    QHBoxLayout* flayout = new QHBoxLayout( frame, 2, 2, "flayout");
    flayout->addWidget( gl_window, 10 );


    // Top level layout, puts the sliders to the left of the frame/GL widget
    //hlayout->addLayout( vlayout );
    //hlayout->addWidget( frame, 1 );

    // Put the sliders on top of each other
    //printf( "1\n" );
    //printf( "2\n" );
    //printf( "3\n" );
    


    // Translation 
    //QVBoxLayout* trans_layout = new QVBoxLayout( 20, "vlayout");
    //QVAaBoxLayout* vlayout_main = new QVBoxLayout( this, 20, 20, "vlayout_main");
    //printf( "x2x\n" );

    //vlayout->addWidget( x );
    //vlayout->addWidget( y );
    //vlayout->addWidget( z );

    //vlayout_main->addLayout( hlayout );
    vlayout_main->addWidget( frame );

    //--------------------------------------------------------------
    // Buttons
    //--------------------------------------------------------------
    QHBoxLayout  * btn_layout = new QHBoxLayout();

    pbLoad = addButton( this, "Load", "LoadButton", btn_layout );
    connect( pbLoad, SIGNAL(clicked()), SLOT( btnLoadClicked() ) );

    pbDiam = addButton( this, "Diameter", "LoadButton", btn_layout );
    connect( pbDiam, SIGNAL(clicked()), SLOT( btnDiameterClicked() ) );

    vlayout_main->addLayout( btn_layout );

    // Create a menu
    //printf( "x1x\n" );
}