Create a matrix from a .csv file

mrjj

@AliM93
its due to you having the auto generated file open
just press Close.

mrjj

Hmm
it seems cmake is confused.
about the includes.

Lets demote the widget and then you can add it to the dialog as you normal does.

Demote is important else you get error for ever.
sec.
shots

mrjj

ok go to
GridDialog UI
and then right click the widget
alt text

THIS IS ULTRA IMPORTANT as ELSE it will fail again and again as it still remembers the promotion.

AliM93

i have to do only this? morph into QWidget

mrjj

Next step is to then include matrixwidget.h and
make it like it.
I dont know your structure so not sure why it dont see it.
You have to make it like the include.

mrjj

@AliM93
Yes to get rid of the promotion we tried.

AliM93

done, so now i have to include into file grid the matrix

mrjj

@AliM93
yes and see if it will accept it.
Then we need to new a matrixwidget in GridDialog

AliM93

so i add the include of matrix.h in the grid.cpp

mrjj

@AliM93
and it can compile?

AliM93

Build! thansk

AliM93

i run it but obviouslt i can't see anything

AliM93

because we have to add the matrix in the widget, right?

mrjj

@AliM93
yes.
You should still have the layout from before, correct ?
then in Grids constrcutor

GridDialog::GridDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::GridDialog)
{
    ui->setupUi(this);

    MatrixWidget * m = new MatrixWidget (this);
    ui->verticalLayout->addWidget(m); /// you name might differ for layout

}

We dont need the plain widget any more. you can delete it. we use the layout

AliM93

done! but i only see the grid, not the content

mrjj

@AliM93
\o/
Good work.
I hope you learn a few Creator tricks.

we didnt paint the values yet :)
just all other stuff :=)

But its 4 in the morning so rest must be tomorrow as its bed time for me :)

AliM93

@mrjj yes! but i don't even see the number

AliM93

anyway, ok for tomorrow, you have been too much patient with me, thanks. and for the first time, i can say thay i better undestand how qt works! i start to appreciate it

mrjj

@AliM93
well do you have that version of paint ?


void MatrixWidget::paintEvent(QPaintEvent *event)
{

    QPainter p(this);
    // draw frame.
    p.drawRect(0, 0, width() - 1, height() - 1);

    // size of area we have. w = width , h = height , we take 2 pixles for border
    int w = width() - 2;
    int h = height() - 2;

    // now we find out how big each box should be which area we have  divided with how many on x and y
    bw = w / max_x;
    bh = h / max_y;

    // now we loop and drw the boxes
    for (int xi = 0; xi < max_x; ++xi) {
        for (int yi = 0; yi < max_x; ++yi) {
            p.drawRect( QRect( xi * bw, yi * bh, bw, bh  ) )  ;
            p.drawText(QRect( xi * bw, yi * bh, bw, bh  ),
                       QString::number(xi + 1) + "," + QString::number(yi+1) ); // the +1 aswe dont want to use first at 0,0
        }
    }

}

AliM93

yes i have