mirror of
https://github.com/crystalidea/qt6windows7.git
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127 lines
3.9 KiB
C++
127 lines
3.9 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "freezetablewidget.h"
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#include <QScrollBar>
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#include <QHeaderView>
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//! [constructor]
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FreezeTableWidget::FreezeTableWidget(QAbstractItemModel * model)
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{
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setModel(model);
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frozenTableView = new QTableView(this);
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init();
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//connect the headers and scrollbars of both tableviews together
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connect(horizontalHeader(),&QHeaderView::sectionResized, this,
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&FreezeTableWidget::updateSectionWidth);
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connect(verticalHeader(),&QHeaderView::sectionResized, this,
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&FreezeTableWidget::updateSectionHeight);
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connect(frozenTableView->verticalScrollBar(), &QAbstractSlider::valueChanged,
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verticalScrollBar(), &QAbstractSlider::setValue);
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connect(verticalScrollBar(), &QAbstractSlider::valueChanged,
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frozenTableView->verticalScrollBar(), &QAbstractSlider::setValue);
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}
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//! [constructor]
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FreezeTableWidget::~FreezeTableWidget()
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{
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delete frozenTableView;
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}
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//! [init part1]
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void FreezeTableWidget::init()
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{
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frozenTableView->setModel(model());
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frozenTableView->setFocusPolicy(Qt::NoFocus);
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frozenTableView->verticalHeader()->hide();
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frozenTableView->horizontalHeader()->setSectionResizeMode(QHeaderView::Fixed);
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viewport()->stackUnder(frozenTableView);
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//! [init part1]
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//! [init part2]
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frozenTableView->setStyleSheet("QTableView { border: none;"
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"background-color: #8EDE21;"
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"selection-background-color: #999}"); //for demo purposes
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frozenTableView->setSelectionModel(selectionModel());
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for (int col = 1; col < model()->columnCount(); ++col)
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frozenTableView->setColumnHidden(col, true);
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frozenTableView->setColumnWidth(0, columnWidth(0) );
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frozenTableView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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frozenTableView->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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frozenTableView->show();
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updateFrozenTableGeometry();
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setHorizontalScrollMode(ScrollPerPixel);
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setVerticalScrollMode(ScrollPerPixel);
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frozenTableView->setVerticalScrollMode(ScrollPerPixel);
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}
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//! [init part2]
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//! [sections]
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void FreezeTableWidget::updateSectionWidth(int logicalIndex, int /* oldSize */, int newSize)
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{
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if (logicalIndex == 0){
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frozenTableView->setColumnWidth(0, newSize);
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updateFrozenTableGeometry();
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}
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}
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void FreezeTableWidget::updateSectionHeight(int logicalIndex, int /* oldSize */, int newSize)
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{
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frozenTableView->setRowHeight(logicalIndex, newSize);
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}
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//! [sections]
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//! [resize]
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void FreezeTableWidget::resizeEvent(QResizeEvent * event)
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{
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QTableView::resizeEvent(event);
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updateFrozenTableGeometry();
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}
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//! [resize]
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//! [navigate]
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QModelIndex FreezeTableWidget::moveCursor(CursorAction cursorAction,
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Qt::KeyboardModifiers modifiers)
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{
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QModelIndex current = QTableView::moveCursor(cursorAction, modifiers);
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if (cursorAction == MoveLeft && current.column() > 0
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&& visualRect(current).topLeft().x() < frozenTableView->columnWidth(0) ){
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const int newValue = horizontalScrollBar()->value() + visualRect(current).topLeft().x()
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- frozenTableView->columnWidth(0);
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horizontalScrollBar()->setValue(newValue);
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}
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return current;
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}
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//! [navigate]
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void FreezeTableWidget::scrollTo (const QModelIndex & index, ScrollHint hint){
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if (index.column() > 0)
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QTableView::scrollTo(index, hint);
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}
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//! [geometry]
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void FreezeTableWidget::updateFrozenTableGeometry()
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{
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frozenTableView->setGeometry(verticalHeader()->width() + frameWidth(),
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frameWidth(), columnWidth(0),
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viewport()->height()+horizontalHeader()->height());
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}
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//! [geometry]
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