QMenu in QHeaderView

[munna]

Hi,

How can I get the rect of a section of headerView so that I can make a menu appear in a section of a headerView.

I wrote the following code but it is not working.

DataTable::DataTable(QWidget *parent) : QTableWidget(parent)
{
	setAlternatingRowColors(true);
 
	verticalHeader()->hide();
 
	tableHeader = new TableHeader(this);
	connect(tableHeader,SIGNAL(clicked(const QModelIndex &)),this,SLOT(headerClicked(const QModelIndex &)));
	setHorizontalHeader(tableHeader);
 
	headerMenu = new QMenu(tr("Undefined"),tableHeader);
	connect(headerMenu,SIGNAL(triggered(QAction *)),this,SLOT(headerMenuTriggered(QAction *)));
 
	populateHeaderMenu();//Add the actions to the menu
}
 
//The following slot is not called itself
void DataTable::headerClicked(const QModelIndex &index)
{
      //I wonder if this is correct.
	QRect rect = visualRect(index);
	headerMenu->exec(tableHeader->mapToGlobal(QPoint(rect.x(),rect.y())));
}

DataTable::DataTable(QWidget *parent) : QTableWidget(parent)
{
	setAlternatingRowColors(true);

	verticalHeader()->hide();

	tableHeader = new TableHeader(this);
	connect(tableHeader,SIGNAL(clicked(const QModelIndex &)),this,SLOT(headerClicked(const QModelIndex &)));
	setHorizontalHeader(tableHeader);

	headerMenu = new QMenu(tr("Undefined"),tableHeader);
	connect(headerMenu,SIGNAL(triggered(QAction *)),this,SLOT(headerMenuTriggered(QAction *)));
	
	populateHeaderMenu();//Add the actions to the menu
}

//The following slot is not called itself
void DataTable::headerClicked(const QModelIndex &index)
{
      //I wonder if this is correct.
	QRect rect = visualRect(index);
	headerMenu->exec(tableHeader->mapToGlobal(QPoint(rect.x(),rect.y())));
}

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The same menu needs to appear for all the columns and therefore I used this way.
Is there a better way of doing it.

Can someone please help me with this?

Thanks a lot.

[munna]

Any ideas ??

[jacek]

Shouldn't it be:

void DataTable::headerClicked(const QModelIndex &index)
{
	QRect rect = tableHeader->visualRect(index);
	headerMenu->exec(tableHeader->mapToGlobal(QPoint(rect.x(),rect.y())));
}

void DataTable::headerClicked(const QModelIndex &index)
{
	QRect rect = tableHeader->visualRect(index);
	headerMenu->exec(tableHeader->mapToGlobal(QPoint(rect.x(),rect.y())));
}

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?

[munna]

Thanks for the reply. But the problem is that this slot itself is not called.

Am I doing anything wrong.

Thanks a lot.

[jpn]

The reason is that QHeaderView doesn't emit clicked() signal. Use QHeaderView::sectionClicked(int section) instead.

[munna]

Use QHeaderView::sectionClicked(int section) instead

But then how can I get the bound of that section ?

Thanks

[jpn]

void headerClicked(int section)
{
	QModelIndex idx = tableHeader->model()->index(0, section);
	// about jacek's solution: AbstractItemView::visualRect()
	// is protected and this seems to work..
	QRect rect = visualRect(idx);
	headerMenu->exec(tableHeader->mapToGlobal(rect.topLeft()));
}

void headerClicked(int section)
{
	QModelIndex idx = tableHeader->model()->index(0, section);
	// about jacek's solution: AbstractItemView::visualRect()
	// is protected and this seems to work..
	QRect rect = visualRect(idx);
	headerMenu->exec(tableHeader->mapToGlobal(rect.topLeft()));
}

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[munna]

The slot is now called but the rect is(0,0,-1,-1) which is wrong. I am not getting the right co-ordiantes.

Any ideas?

Here is my code

void DataTable::headerClicked(int logicalIndex)
{
	QModelIndex index = tableHeader->model()->index(0,logicalIndex);
 
	QRect rect = tableHeader->visualRect(index);//QHeaderView::visualRect(index)
	//rect is wrong
         headerMenu->exec(tableHeader->mapToGlobal(QPoint(rect.x(),rect.y())));
}

void DataTable::headerClicked(int logicalIndex)
{
	QModelIndex index = tableHeader->model()->index(0,logicalIndex);

	QRect rect = tableHeader->visualRect(index);//QHeaderView::visualRect(index)
	//rect is wrong
         headerMenu->exec(tableHeader->mapToGlobal(QPoint(rect.x(),rect.y())));
}

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Thaks a lot

[munna]

I have finally solve this. The following code will make the horizontal header of a QTableWidget behave like a menu bar.

//slot connected to the signal of sectionClicked(int) of QHeaderView.
void DataTable::headerClicked(int logicalIndex)
{
	QModelIndex index = model()->index(0,logicalIndex);
	QRect rect = visualRect(index);
	headerMenu->exec(mapToGlobal(QPoint(rect.x(),rect.y()+tableHeader->height())));
}

//slot connected to the signal of sectionClicked(int) of QHeaderView.
void DataTable::headerClicked(int logicalIndex)
{
	QModelIndex index = model()->index(0,logicalIndex);
	QRect rect = visualRect(index);
	headerMenu->exec(mapToGlobal(QPoint(rect.x(),rect.y()+tableHeader->height())));
}

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[jpn]

Notice the difference?

headerMenu->exec(mapToGlobal(QPoint(rect.x(),rect.y()+tableHeader->height())));

headerMenu->exec(mapToGlobal(QPoint(rect.x(),rect.y()+tableHeader->height())));

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and

headerMenu->exec(tableHeader->mapToGlobal(rect.topLeft()));

headerMenu->exec(tableHeader->mapToGlobal(rect.topLeft()));

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It matters from which widget's point of view the coordinates are mapped to global..