sqlitebrowser/src/ExtendedTableWidget.cpp at sqlb-3.2.x · sqlitebrowser/sqlitebrowser · GitHub

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#include "ExtendedTableWidget.h"

#include "sqlitetablemodel.h"

#include "FilterTableHeader.h"

#include <QApplication>

#include <QClipboard>

#include <QKeySequence>

#include <QKeyEvent>

#include <QScrollBar>

#include <QHeaderView>

ExtendedTableWidget::ExtendedTableWidget(QWidget* parent) :

QTableView(parent)

{

setHorizontalScrollMode(ExtendedTableWidget::ScrollPerPixel);

connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(vscrollbarChanged(int)));

// Set up filter row

m_tableHeader = new FilterTableHeader(this);

setHorizontalHeader(m_tableHeader);

}

void ExtendedTableWidget::copy()

{

// Get list of selected items

QItemSelectionModel* selection = selectionModel();

QModelIndexList indices = selection->selectedIndexes();

// Abort if there's nothing to copy

if(indices.size() == 0)

{

return;

} else if(indices.size() == 1) {

qApp->clipboard()->setText(indices.front().data().toString());

return;

}

// Sort the items by row, then by column

qSort(indices);

// Go through all the items...

QString result;

QModelIndex prev = indices.front();

indices.removeFirst();

foreach(QModelIndex index, indices)

{

// Add the content of this cell to the clipboard string

result.append(QString("\"%1\"").arg(prev.data().toString()));

// If this is a new row add a line break, if not add a tab for cell separation

if(index.row() != prev.row())

result.append("\r\n");

else

result.append("\t");

prev = index;

}

result.append(QString("\"%1\"\r\n").arg(indices.last().data().toString())); // And the last cell

// And finally add it to the clipboard

qApp->clipboard()->setText(result);

}

void ExtendedTableWidget::keyPressEvent(QKeyEvent* event)

{

// Call a custom copy method when Ctrl-C is pressed

if(event->matches(QKeySequence::Copy))

copy();

else

QTableView::keyPressEvent(event);

}

void ExtendedTableWidget::updateGeometries()

{

// Call the parent implementation first - it does most of the actual logic

QTableView::updateGeometries();

// Check if a model has already been set yet

if(model())

{

// If so and if it is a SqliteTableModel and if the parent implementation of this method decided that a scrollbar is needed, update its maximum value

SqliteTableModel* m = qobject_cast<SqliteTableModel*>(model());

if(m && verticalScrollBar()->maximum())

verticalScrollBar()->setMaximum(m->totalRowCount() - numVisibleRows() + 1);

}

void ExtendedTableWidget::vscrollbarChanged(int value)

{

// Cancel if there is no model set yet - this shouldn't happen (because without a model there should be no scrollbar) but just to be sure...

if(!model())

return;

// Fetch more data from the DB if necessary

if((value + numVisibleRows()) >= model()->rowCount() && model()->canFetchMore(QModelIndex()))

model()->fetchMore(QModelIndex());

}

int ExtendedTableWidget::numVisibleRows()

{

// Get the row numbers of the rows currently visible at the top and the bottom of the widget

int row_top = rowAt(0) == -1 ? 0 : rowAt(0);

int row_bottom = rowAt(height()) == -1 ? model()->rowCount() : rowAt(height());

// Calculate the number of visible rows

return row_bottom - row_top;

}

sqlitebrowser/src/ExtendedTableWidget.cpp at sqlb-3.2.x · sqlitebrowser/sqlitebrowser · GitHub

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sqlitebrowser/src/ExtendedTableWidget.cpp at sqlb-3.2.x · sqlitebrowser/sqlitebrowser · GitHub

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