qt5base-lts/examples/widgets/itemviews/frozencolumn/freezetablewidget.cpp
David Schulz ab0a007cb3 QtBase: examples/widgets/itemviews code style
Change-Id: I78a7745f7dc3add3fd7780220118d1b35b50a941
Reviewed-by: hjk <qthjk@ovi.com>
2012-11-22 13:56:25 +01:00

164 lines
5.7 KiB
C++

/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
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** modification, are permitted provided that the following conditions are
** met:
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** notice, this list of conditions and the following disclaimer.
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** the documentation and/or other materials provided with the
** distribution.
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** of its contributors may be used to endorse or promote products derived
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****************************************************************************/
#include "freezetablewidget.h"
#include <QScrollBar>
#include <QHeaderView>
//! [constructor]
FreezeTableWidget::FreezeTableWidget(QAbstractItemModel * model)
{
setModel(model);
frozenTableView = new QTableView(this);
init();
//connect the headers and scrollbars of both tableviews together
connect(horizontalHeader(),SIGNAL(sectionResized(int,int,int)), this,
SLOT(updateSectionWidth(int,int,int)));
connect(verticalHeader(),SIGNAL(sectionResized(int,int,int)), this,
SLOT(updateSectionHeight(int,int,int)));
connect(frozenTableView->verticalScrollBar(), SIGNAL(valueChanged(int)),
verticalScrollBar(), SLOT(setValue(int)));
connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
frozenTableView->verticalScrollBar(), SLOT(setValue(int)));
}
//! [constructor]
FreezeTableWidget::~FreezeTableWidget()
{
delete frozenTableView;
}
//! [init part1]
void FreezeTableWidget::init()
{
frozenTableView->setModel(model());
frozenTableView->setFocusPolicy(Qt::NoFocus);
frozenTableView->verticalHeader()->hide();
frozenTableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Fixed);
viewport()->stackUnder(frozenTableView);
//! [init part1]
//! [init part2]
frozenTableView->setStyleSheet("QTableView { border: none;"
"background-color: #8EDE21;"
"selection-background-color: #999}"); //for demo purposes
frozenTableView->setSelectionModel(selectionModel());
for (int col = 1; col < model()->columnCount(); ++col)
frozenTableView->setColumnHidden(col, true);
frozenTableView->setColumnWidth(0, columnWidth(0) );
frozenTableView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
frozenTableView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
frozenTableView->show();
updateFrozenTableGeometry();
setHorizontalScrollMode(ScrollPerPixel);
setVerticalScrollMode(ScrollPerPixel);
frozenTableView->setVerticalScrollMode(ScrollPerPixel);
}
//! [init part2]
//! [sections]
void FreezeTableWidget::updateSectionWidth(int logicalIndex, int /* oldSize */, int newSize)
{
if (logicalIndex == 0){
frozenTableView->setColumnWidth(0, newSize);
updateFrozenTableGeometry();
}
}
void FreezeTableWidget::updateSectionHeight(int logicalIndex, int /* oldSize */, int newSize)
{
frozenTableView->setRowHeight(logicalIndex, newSize);
}
//! [sections]
//! [resize]
void FreezeTableWidget::resizeEvent(QResizeEvent * event)
{
QTableView::resizeEvent(event);
updateFrozenTableGeometry();
}
//! [resize]
//! [navigate]
QModelIndex FreezeTableWidget::moveCursor(CursorAction cursorAction,
Qt::KeyboardModifiers modifiers)
{
QModelIndex current = QTableView::moveCursor(cursorAction, modifiers);
if (cursorAction == MoveLeft && current.column() > 0
&& visualRect(current).topLeft().x() < frozenTableView->columnWidth(0) ){
const int newValue = horizontalScrollBar()->value() + visualRect(current).topLeft().x()
- frozenTableView->columnWidth(0);
horizontalScrollBar()->setValue(newValue);
}
return current;
}
//! [navigate]
void FreezeTableWidget::scrollTo (const QModelIndex & index, ScrollHint hint){
if (index.column() > 0)
QTableView::scrollTo(index, hint);
}
//! [geometry]
void FreezeTableWidget::updateFrozenTableGeometry()
{
frozenTableView->setGeometry(verticalHeader()->width() + frameWidth(),
frameWidth(), columnWidth(0),
viewport()->height()+horizontalHeader()->height());
}
//! [geometry]