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qtFrontEnd.cpp

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/********************************************************************
Description: FrontEnd using Qt libraries
part of the 3Dsia project
created: StonedBones, 17.2.2000

History:
    date,   name,       changes,                    in funtion
    ??0200  "Tommy"     created source
    170200  StonedBones integrated it in CVS-tree
    180200  StonedBones various changes, now works

********************************************************************/

#include "qtFront.h"

#include "qtFrontEnd.h"
#include "../../../common/buffer.h"

#include <qapp.h>
#include <string.h>

int myUsers;
int myMatrices;
Buffer* myStr;

bool    usersChanged;
bool    matricesChanged;
bool    strChanged;


/*...................................................................
Description: Constructor
Args: int argc, char** argv: arguments from 'main'
Returns: <none>
Created: "Tommy", ??.2.2000
[ToDo:]
[Comments:]
Changes:
- 18.2.2000, StonedBones: added global variables and their initializations
-------------------------------------------------------------------*/

QtFrontEnd::QtFrontEnd (int argc, char** argv) : FrontEnd (argc, argv) {
    this->argc=argc;
    this->argv=argv;
    
    myUsers    = 0;
    myMatrices = 0;
    
    usersChanged    = false;
    matricesChanged = false;
    strChanged      = false;
    
    myUsers    = 0;
    myMatrices = 0;
    myStr      = new Buffer ();
};

/*...................................................................
Description: the secret constructor... workaround for Qt (see Skelleton)
Args: <none>
Returns: <none>
Created: "Tommy", ??.2.2000
[ToDo:]
[Comments:]
Changes:
- 18.2.2000, StonedBones: added timer for updates
-------------------------------------------------------------------*/

void QtFrontEnd::init () {
    QApplication* qapp;
    qapp = new QApplication (argc, argv);
    
    s=new qtFront();
    qapp->setMainWidget(s);
    s->show();
    
    frontUpdate = new FrontUpdate (s, s);
    
    timer = new QTimer ();
    QObject::connect (timer, SIGNAL (timeout ()), frontUpdate, SLOT (update ()));
    QObject::connect (frontUpdate, SIGNAL (sigUpdate ()), frontUpdate, SLOT (update ()));
    timer->start (100, FALSE);
    
    qapp->exec ();
    
    exit (0);
};

/*...................................................................
Description: Destructor
Args: <none>
Returns: <none>
Created: "Tommy", ??.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

QtFrontEnd::~QtFrontEnd () {
};
    
/*...................................................................
Description: update function; not needed for this frontend
Args: <none>
Returns: <none>
Created: "Tommy", ??.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

void QtFrontEnd::update () {
};


/*...................................................................
Description: displays users currently logged in
Args: int users: guess what :-)
Returns: <none>
Created: "Tommy", ??.2.2000
[ToDo:]
[Comments:]
Changes:
- 18.2.2000, StonedBones: function rewritten
-------------------------------------------------------------------*/

void QtFrontEnd::displayUsers (int users) {
    myUsers = users;
    usersChanged = true;
};

/*...................................................................
Description: display open matrices
Args: int matrices: open matrices
Returns: <none>
Created: "Tommy", ??.2.2000
[ToDo:]
[Comments:]
Changes:
- 18.2.2000, StonedBones: function rewritten
-------------------------------------------------------------------*/

void QtFrontEnd::displayMatrices (int matrices) {
    myMatrices = matrices;
    matricesChanged = true;
};
    
/*...................................................................
Description: displays debug messages
Args: char* msg: message
Returns: <none>
Created: "Tommy", ??.2.2000
[ToDo:]
[Comments:]
Changes:
- 18.2.2000, StonedBones: function rewritten
-------------------------------------------------------------------*/

void QtFrontEnd::displayDebugMessage (const char* msg) {
    packet tmp;
    strcpy (tmp.data, msg);
    
    myStr->write (&tmp);
    
    strChanged = true;
};




/*...................................................................
Description: constructor for Qt-workaround-object (multi-threading problems)
Args: qtFront* myFront: the actual frontend; QObject* parent: for Qt
Returns: <none>
Created: StonedBones, 18.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

FrontUpdate::FrontUpdate (qtFront* myFront, QObject* parent) : QObject (parent, "frontEndUpdate") {
    theFront = myFront;
};

/*...................................................................
Description: destructor for helper-class
Args: <none>
Returns: <none>
Created: StonedBones, 18.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

FrontUpdate::~FrontUpdate () {
};

/*...................................................................
Description: the update slot (updates the GUI if needed)
Args: <none>
Returns: <none>
Created: StonedBones, 18.2.2000
[ToDo:]
[Comments:]
Changes:
-------------------------------------------------------------------*/

void FrontUpdate::update () {
    if (usersChanged) {
    theFront->LCDusers->display (myUsers);
    usersChanged = false;
    };
    
    if (matricesChanged) {
    theFront->LCDmatrices->display (myMatrices);
    matricesChanged = false;
    };
    
    if (strChanged) {
    while (!myStr->isEmpty ()) {
        theFront->debugMsgWin->insertLine (myStr->read ()->data);
    };
    strChanged = false;
    };
};

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