I am in the process of putting Qlabels in a QGridLayout to arrange them nicely in a class derived from QWidget. However, when I try to access the coordinates, it always returns (0,0)
Here is my code :
class brick : public QWidget
{
Q_OBJECT
public:
explicit brick(QWidget *parent);
...
private:
QLabel* label;
QPixmap* brickPic;
}
brick::brick(QWidget *parent) :
QWidget(parent)
{
rect=new QRect();
label=new QLabel;
brickPic=new QPixmap(100,15);
brickPic->fill(QColor(255,0,0));
label->setPixmap(*brickPic);
}
class Grid : public QWidget
{
QOBJECT
public:
void fill_grid(QWidget* parent);
...
private:
QGridLayout* grid;
}
void Grid::fill_grid(QWidget* parent)
{
for (int i=0;i<10;i++)
{
for (int j=0;j<12;j++)
{
brick* fillingBrick=new brick(parent);
grid->addWidget(fillingBrick->getLabel(),j,i);
qDebug()<<fillingBrick->parentWidget();
brickVector.push_back(fillingBrick);
}
}
}
These are to be shown as I said before in the following class derived from QWidget :
class render_area : public QWidget
{
Q_OBJECT
public:
render_area(QWidget *parent = 0);
Grid* getGrid() const;
...
private:
Grid* grid;
QRect* bar;
...
}
render_area::render_area(QWidget *parent)
:QWidget(parent)
{
setFocusPolicy(Qt::StrongFocus);
setBackgroundRole(QPalette::Base);
setAutoFillBackground(true);
bar=new QRect(width()/2,height()+50,150,10);
grid=new Grid(this);
grid->fill_grid(this);
std::cout<<"Grid filled !"<<std::endl;
qDebug()<<grid->getBrick(5)->pos();
...
}
The qDebug()<<fillingBrick->parentWidget()
returns render_area
which is good but qDebug()<<grid->getBrick(5)->pos()
returns QPoint(0,0)
which is not.
I wonder how I can get pos()
or x()
and y()
to return the coordinates in render_area
inside of which every brick is placed.
I tried with cellRect
from QGridLayout, MapToParent()
inherited from QWidget, forcing render_area
to show();
but no luck so far.
Edit : this is the loop I'm talking about :
void render_area::update_timer()
{
int x1,x2,y1,y2;
bar->getCoords(&x1,&y1,&x2,&y2);
if(is_fixed==false)
{
//gestion du sol
if(yc+diametre>height())
{
timer.stop();
QDialog* gameOver=new QDialog;
gameOver->setLayout(new QGridLayout);
gameOver->layout()->addWidget(new QPushButton("Ok"));
gameOver->setGeometry(500,500,300,150);
gameOver->show();
}
if(xc>x1 && xc<x1+150)
{
if(yc+diametre>y1)
{
vyc=-vyc;
}
}
//plafond
for (int i=0;i<12;i++)
{
for(int j=0;j<10;j++)
{
grid->getBrick(i,j)->setRect(grid->getGrid()->cellRect(i,j));
}
}
for(int i=0;i<widgets.size();i++)
{
if(widgets.at(i)->getRect()->intersects(ballRectangle))
{
std::cout<<i<<std::endl;
widgets.at(i)->getPixmap()->fill(QColor(255,255,255));
widgets.at(i)->getLabel()->setPixmap(*(widgets.at(i)->getPixmap()));
delete widgets.at(i);
vyc=-vyc;
}
//qDebug()<<grid->getBrick(i,j)->getRect();
}
//bord droit
if(xc+diametre>width())
{
vxc=-vxc;
}
//bord gauche
if(xc<0)
{
vxc=-vxc;
}
//integration (Euler explicite)
xc=xc+dt*vxc;
yc=yc+dt*vyc;
}
repaint();
}