<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>freezetablewidget.cpp Example File | Qt Widgets 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-itemviews-frozencolumn-example.html">Frozen Column Example</a></td><td >freezetablewidget.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtwidgets-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">freezetablewidget.cpp Example File</h1> <span class="subtitle">itemviews/frozencolumn/freezetablewidget.cpp</span> <!-- $$$itemviews/frozencolumn/freezetablewidget.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="preprocessor">#include "freezetablewidget.h"</span> <span class="preprocessor">#include <QScrollBar></span> <span class="preprocessor">#include <QHeaderView></span> FreezeTableWidget<span class="operator">::</span>FreezeTableWidget(<span class="type"><a href="../qtcore/qabstractitemmodel.html">QAbstractItemModel</a></span> <span class="operator">*</span> model) { setModel(model); frozenTableView <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qtableview.html">QTableView</a></span>(<span class="keyword">this</span>); init(); <span class="comment">//connect the headers and scrollbars of both tableviews together</span> connect(horizontalHeader()<span class="operator">,</span><span class="operator">&</span><span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>sectionResized<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>FreezeTableWidget<span class="operator">::</span>updateSectionWidth); connect(verticalHeader()<span class="operator">,</span><span class="operator">&</span><span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>sectionResized<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> <span class="operator">&</span>FreezeTableWidget<span class="operator">::</span>updateSectionHeight); connect(frozenTableView<span class="operator">-</span><span class="operator">></span>verticalScrollBar()<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qabstractslider.html">QAbstractSlider</a></span><span class="operator">::</span>valueChanged<span class="operator">,</span> verticalScrollBar()<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qabstractslider.html">QAbstractSlider</a></span><span class="operator">::</span>setValue); connect(verticalScrollBar()<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qabstractslider.html">QAbstractSlider</a></span><span class="operator">::</span>valueChanged<span class="operator">,</span> frozenTableView<span class="operator">-</span><span class="operator">></span>verticalScrollBar()<span class="operator">,</span> <span class="operator">&</span><span class="type"><a href="qabstractslider.html">QAbstractSlider</a></span><span class="operator">::</span>setValue); } FreezeTableWidget<span class="operator">::</span><span class="operator">~</span>FreezeTableWidget() { <span class="keyword">delete</span> frozenTableView; } <span class="type">void</span> FreezeTableWidget<span class="operator">::</span>init() { frozenTableView<span class="operator">-</span><span class="operator">></span>setModel(model()); frozenTableView<span class="operator">-</span><span class="operator">></span>setFocusPolicy(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>NoFocus); frozenTableView<span class="operator">-</span><span class="operator">></span>verticalHeader()<span class="operator">-</span><span class="operator">></span>hide(); frozenTableView<span class="operator">-</span><span class="operator">></span>horizontalHeader()<span class="operator">-</span><span class="operator">></span>setSectionResizeMode(<span class="type"><a href="qheaderview.html">QHeaderView</a></span><span class="operator">::</span>Fixed); viewport()<span class="operator">-</span><span class="operator">></span>stackUnder(frozenTableView); frozenTableView<span class="operator">-</span><span class="operator">></span>setStyleSheet(<span class="string">"QTableView { border: none;"</span> <span class="string">"background-color: #8EDE21;"</span> <span class="string">"selection-background-color: #999}"</span>); <span class="comment">//for demo purposes</span> frozenTableView<span class="operator">-</span><span class="operator">></span>setSelectionModel(selectionModel()); <span class="keyword">for</span> (<span class="type">int</span> col <span class="operator">=</span> <span class="number">1</span>; col <span class="operator"><</span> model()<span class="operator">-</span><span class="operator">></span>columnCount(); <span class="operator">+</span><span class="operator">+</span>col) frozenTableView<span class="operator">-</span><span class="operator">></span>setColumnHidden(col<span class="operator">,</span> <span class="keyword">true</span>); frozenTableView<span class="operator">-</span><span class="operator">></span>setColumnWidth(<span class="number">0</span><span class="operator">,</span> columnWidth(<span class="number">0</span>) ); frozenTableView<span class="operator">-</span><span class="operator">></span>setHorizontalScrollBarPolicy(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAlwaysOff); frozenTableView<span class="operator">-</span><span class="operator">></span>setVerticalScrollBarPolicy(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAlwaysOff); frozenTableView<span class="operator">-</span><span class="operator">></span>show(); updateFrozenTableGeometry(); setHorizontalScrollMode(ScrollPerPixel); setVerticalScrollMode(ScrollPerPixel); frozenTableView<span class="operator">-</span><span class="operator">></span>setVerticalScrollMode(ScrollPerPixel); } <span class="type">void</span> FreezeTableWidget<span class="operator">::</span>updateSectionWidth(<span class="type">int</span> logicalIndex<span class="operator">,</span> <span class="type">int</span> <span class="comment">/* oldSize */</span><span class="operator">,</span> <span class="type">int</span> newSize) { <span class="keyword">if</span> (logicalIndex <span class="operator">=</span><span class="operator">=</span> <span class="number">0</span>){ frozenTableView<span class="operator">-</span><span class="operator">></span>setColumnWidth(<span class="number">0</span><span class="operator">,</span> newSize); updateFrozenTableGeometry(); } } <span class="type">void</span> FreezeTableWidget<span class="operator">::</span>updateSectionHeight(<span class="type">int</span> logicalIndex<span class="operator">,</span> <span class="type">int</span> <span class="comment">/* oldSize */</span><span class="operator">,</span> <span class="type">int</span> newSize) { frozenTableView<span class="operator">-</span><span class="operator">></span>setRowHeight(logicalIndex<span class="operator">,</span> newSize); } <span class="type">void</span> FreezeTableWidget<span class="operator">::</span>resizeEvent(<span class="type"><a href="../qtgui/qresizeevent.html">QResizeEvent</a></span> <span class="operator">*</span> event) { <span class="type"><a href="qtableview.html">QTableView</a></span><span class="operator">::</span>resizeEvent(event); updateFrozenTableGeometry(); } <span class="type"><a href="../qtcore/qmodelindex.html">QModelIndex</a></span> FreezeTableWidget<span class="operator">::</span>moveCursor(CursorAction cursorAction<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>KeyboardModifiers modifiers) { <span class="type"><a href="../qtcore/qmodelindex.html">QModelIndex</a></span> current <span class="operator">=</span> <span class="type"><a href="qtableview.html">QTableView</a></span><span class="operator">::</span>moveCursor(cursorAction<span class="operator">,</span> modifiers); <span class="keyword">if</span> (cursorAction <span class="operator">=</span><span class="operator">=</span> MoveLeft <span class="operator">&</span><span class="operator">&</span> current<span class="operator">.</span>column() <span class="operator">></span> <span class="number">0</span> <span class="operator">&</span><span class="operator">&</span> visualRect(current)<span class="operator">.</span>topLeft()<span class="operator">.</span>x() <span class="operator"><</span> frozenTableView<span class="operator">-</span><span class="operator">></span>columnWidth(<span class="number">0</span>) ){ <span class="keyword">const</span> <span class="type">int</span> newValue <span class="operator">=</span> horizontalScrollBar()<span class="operator">-</span><span class="operator">></span>value() <span class="operator">+</span> visualRect(current)<span class="operator">.</span>topLeft()<span class="operator">.</span>x() <span class="operator">-</span> frozenTableView<span class="operator">-</span><span class="operator">></span>columnWidth(<span class="number">0</span>); horizontalScrollBar()<span class="operator">-</span><span class="operator">></span>setValue(newValue); } <span class="keyword">return</span> current; } <span class="type">void</span> FreezeTableWidget<span class="operator">::</span>scrollTo (<span class="keyword">const</span> <span class="type"><a href="../qtcore/qmodelindex.html">QModelIndex</a></span> <span class="operator">&</span> index<span class="operator">,</span> ScrollHint hint){ <span class="keyword">if</span> (index<span class="operator">.</span>column() <span class="operator">></span> <span class="number">0</span>) <span class="type"><a href="qtableview.html">QTableView</a></span><span class="operator">::</span>scrollTo(index<span class="operator">,</span> hint); } <span class="type">void</span> FreezeTableWidget<span class="operator">::</span>updateFrozenTableGeometry() { frozenTableView<span class="operator">-</span><span class="operator">></span>setGeometry(verticalHeader()<span class="operator">-</span><span class="operator">></span>width() <span class="operator">+</span> frameWidth()<span class="operator">,</span> frameWidth()<span class="operator">,</span> columnWidth(<span class="number">0</span>)<span class="operator">,</span> viewport()<span class="operator">-</span><span class="operator">></span>height()<span class="operator">+</span>horizontalHeader()<span class="operator">-</span><span class="operator">></span>height()); } </pre> </div> <!-- @@@itemviews/frozencolumn/freezetablewidget.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>