Hi,

I am working on some simple EPG for SETTOP and struck with some probelms.

request to please review my code and let me know how can i over come problems.

following is my requirement:


As soon as i launch the guide

1) selection should be on the first cell and should print row = 0 col =0, currently there is no selection--> how to select R0C0 Cell

then
2) as i navigate through epg it should print the cell index i.e row and col value as and when cell is highlighted
currently the result is

3)when ever i press enter getting correct index , but immediately after launching epg, getting row = -1 and col = -1 -->how to correct it

Qt Code: 
  1. #include "widget.h"
  2. #include <QKeyEvent>
  3. #include<QScrollBar>
  4.  
  5.  
  6. Widget::Widget(QWidget *parent)
  7.     : QWidget(parent)
  8. {
  9.     epg = new epg_table;
  10.     epg->setParent(this);
  11.     epg->setRowCount(8);
  12.     epg->setColumnCount(2);
  13.     epg->horizontalHeader()->hide();
  14.     epg->verticalHeader()->hide();
  15.     epg->verticalScrollBar()->hide();
  16.     epg->setColumnWidth(0,300);
  17.     epg->setColumnWidth(1,400);
  18.     epg->resize(700,500);
  19.     epg->move(100,50);
  20.     connect(this,SIGNAL(UPDOWN1()),epg,SLOT(findindex()));
  21.     epg->installEventFilter(this);
  22.     epg->construct();
  23.  
  24. }
  25.  
  26. epg_table::epg_table()
  27. {
  28.       for(int row = 0; row < 8;row++) {
  29.         tItem[row] = NULL;
  30.       }
  31.       service_name << "200 HBO" << "201  STAR WORLD" << "202  NEO" << "203  WB" << "204  START SPORTS" << "205  LOVE";
  32.          service_name << "206  MGM" << "207  GEO"<<"300 STAR Movies" << "201  STAR Cricket" << "202  Sony" << "203  Kushi" << "204  STARTUtsav" << "205  LOVE";
  33.          service_name << "203  PIX" << "204  SETMax";
  34.  
  35. }
  36.  
  37.  
  38. void epg_table::findindex()
  39. {
  40.     qDebug()<<"SCol="<<currentColumn();
  41.     qDebug()<<"SRow="<<currentRow();
  42. }
  43.  
  44. void epg_table::construct()
  45. {
  46.            int row;
  47.            int row_max=8;
  48.  
  49.            QFont font;
  50.            font.setPointSize(20);
  51.             static int start = 0;
  52.  
  53.             for(row = 0; row < row_max;row++){
  54.  
  55.                     if(!tItem[row]) {
  56.                         qDebug()<<"Allocating "<<row+1;
  57.                         tItem[row] = new QTableWidgetItem();
  58.                         setItem(row,0,tItem[row]);
  59.                         item(row,0)->setTextColor(Qt::red);
  60.                         item(row,0)->setFont(font);
  61.                     }
  62.                 }
  63.  
  64.                 for(row = 0; row < row_max;row++){
  65.  
  66.                     tItem[row]->setText(service_name[start]);
  67.                     qDebug()<<"Adding "<<start+1;
  68.                     start++;
  69.                     start= (start==16?0:start);
  70.                 }
  71.  
  72.            setItem(0,1,new QTableWidgetItem("X-Men First Class 2:00PM - 3:45PM"));
  73.            item(0,1)->setTextColor(Qt::red);
  74.  
  75.            QPalette* palette = new QPalette();
  76.             palette->setBrush(QPalette::Base,*(new QBrush(*(new QPixmap("bangles.jpg")))));
  77.             setPalette(*palette);
  78.             setFrameShape(QFrame::NoFrame);
  79.             // setParent(this);
  80.              setFocus();
  81. }
  82.  
  83. Widget::~Widget()
  84. {
  85.  
  86.  
  87. }
  88.  
  89. bool Widget::eventFilter(QObject *obj, QEvent *event)
  90. {
  91.  
  92.     if (obj == epg && event->type() == QEvent::KeyPress) {
  93.          QKeyEvent *ke = static_cast<QKeyEvent*>(event);
  94.          switch(ke->key())
  95.          {
  96.          case Qt::Key_Enter:
  97.              qDebug()<<"ECol="<<epg->currentColumn();
  98.              qDebug()<<"ERow="<<epg->currentRow();
  99.  
  100.              break;
  101.  
  102.          case Qt::Key_Up:
  103.  
  104.              qDebug()<<"UCol="<<epg->currentColumn();
  105.              qDebug()<<"URow="<<epg->currentRow();
  106.              emit UPDOWN1();
  107.              break;
  108.  
  109.          case Qt::Key_Down:
  110.  
  111.                 qDebug()<<"DCol="<<epg->currentColumn();
  112.                 qDebug()<<"DRow="<<epg->currentRow();
  113.                 emit UPDOWN1();
  114.              break;
  115.  
  116.          default:
  117.              break;
  118.          }
  119.         return false;//moves the highlight up and down but does not give index properly
  120.        // return true;//does not move the highlight anywhere and always returns row and col as zero
  121.        //   return QWidget::eventFilter(obj, event);
  122.     }else {
  123.  
  124.         //return QWidget::eventFilter(obj, event);
  125.         return true;
  126.     }
  127.  
  128. }
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sample output for return false case
at first
DCol= -1
DRow= -1
1st down
DCol= 0
DRow= 0
2nd down
DCol= 0
DRow= 1
3rd down
DCol= 0
DRow= 2

1st Up from 3rd down
UCol= 0
URow= 3
2nd Up
UCol= 0
URow= 2
3rd Up
UCol= 0
URow= 1
#endif