File indexing completed on 2024-05-12 15:27:38

 /***************************************************************************
     File                 : SpreadsheetHeaderView.cpp
     Project              : LabPlot
     --------------------------------------------------------------------
     Copyright            : (C) 2016 Alexander Semke (alexander.semke@web.de)
     Copyright            : (C) 2007 Tilman Benkert (thzs@gmx.net)
     Description          : Horizontal header for SpreadsheetView displaying comments in a second header
 
  ***************************************************************************/
 
 /***************************************************************************
  *                                                                         *
  *  This program is free software; you can redistribute it and/or modify   *
  *  it under the terms of the GNU General Public License as published by   *
  *  the Free Software Foundation; either version 2 of the License, or      *
  *  (at your option) any later version.                                    *
  *                                                                         *
  *  This program is distributed in the hope that it will be useful,        *
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  *  GNU General Public License for more details.                           *
  *                                                                         *
  *   You should have received a copy of the GNU General Public License     *
  *   along with this program; if not, write to the Free Software           *
  *   Foundation, Inc., 51 Franklin Street, Fifth Floor,                    *
  *   Boston, MA  02110-1301  USA                                           *
  *                                                                         *
  ***************************************************************************/
 
 #include "SpreadsheetHeaderView.h"
 #include "SpreadsheetCommentsHeaderModel.h"
 #include "backend/lib/macros.h"
 
 /*!
  \class SpreadsheetCommentsHeaderView
  \brief Slave header for SpreadsheetDoubleHeaderView
 
  This class is only to be used by SpreadsheetDoubleHeaderView.
  It allows for displaying two horizontal headers in a SpreadsheetView.
  A SpreadsheetCommentsHeaderView displays the column comments
  in a second header below the normal header. It is completely
  controlled by a SpreadsheetDoubleHeaderView object and thus has
  a master-slave relationship to it. This would be an inner class
  of SpreadsheetDoubleHeaderView if Qt allowed this.
 
  \ingroup commonfrontend
 */
 
 SpreadsheetCommentsHeaderView::SpreadsheetCommentsHeaderView(QWidget* parent) : QHeaderView(Qt::Horizontal, parent) {
 }
 
 SpreadsheetCommentsHeaderView::~SpreadsheetCommentsHeaderView() {
     delete model();
 }
 
 void SpreadsheetCommentsHeaderView::setModel(QAbstractItemModel* model) {
     Q_ASSERT(model->inherits("SpreadsheetModel"));
     delete QHeaderView::model();
     auto* new_model = new SpreadsheetCommentsHeaderModel(static_cast<SpreadsheetModel*>(model));
     QHeaderView::setModel(new_model);
 }
 
 /*!
  \class SpreadsheetDoubleHeaderView
  \brief Horizontal header for SpreadsheetView displaying comments in a second header
 
  This class is only to be used by SpreadsheetView.
  It allows for displaying two horizontal headers.
  A \c SpreadsheetDoubleHeaderView displays the column name, plot designation, and
  type icon in a normal QHeaderView and below that a second header
  which displays the column comments.
 
  \sa SpreadsheetCommentsHeaderView
  \sa QHeaderView
 
  \ingroup commonfrontend
 */
 SpreadsheetHeaderView::SpreadsheetHeaderView(QWidget* parent) : QHeaderView(Qt::Horizontal, parent) {
     setDefaultAlignment(Qt::AlignLeft | Qt::AlignVCenter);
     m_slave = new SpreadsheetCommentsHeaderView();
     m_slave->setDefaultAlignment(Qt::AlignLeft | Qt::AlignVCenter);
     m_showComments = true;
 }
 
 SpreadsheetHeaderView::~SpreadsheetHeaderView() {
     delete m_slave;
 }
 
 QSize SpreadsheetHeaderView::sizeHint() const {
     QSize master_size = QHeaderView::sizeHint();
     if (m_showComments)
         master_size.setHeight(master_size.height() + m_slave->sizeHint().height());
     else
         master_size.setHeight(master_size.height());
 
     return master_size;
 }
 
 void SpreadsheetHeaderView::setModel(QAbstractItemModel* model) {
     Q_ASSERT(model->inherits("SpreadsheetModel"));
     m_slave->setModel(model);
     QHeaderView::setModel(model);
     connect(model, &QAbstractItemModel::headerDataChanged, this, &SpreadsheetHeaderView::headerDataChanged);
 }
 
 void SpreadsheetHeaderView::paintSection(QPainter* painter, const QRect& rect, int logicalIndex) const {
     QRect master_rect = rect;
     if (m_showComments)
         master_rect = rect.adjusted(0, 0, 0, -m_slave->sizeHint().height());
 
     QHeaderView::paintSection(painter, master_rect, logicalIndex);
     if (m_showComments && rect.height() > QHeaderView::sizeHint().height()) {
         QRect slave_rect = rect.adjusted(0, QHeaderView::sizeHint().height(), 0, 0);
         m_slave->paintSection(painter, slave_rect, logicalIndex);
     }
 }
 
 /*!
   Returns whether comments are shown currently or not.
 */
 bool SpreadsheetHeaderView::areCommentsShown() const {
     return m_showComments;
 }
 
 /*!
   Show or hide (if \c on = \c false) the column comments.
 */
 void SpreadsheetHeaderView::showComments(bool on) {
     m_showComments = on;
     refresh();
 }
 
 /*!
   adjust geometry and repaint header .
 */
 void SpreadsheetHeaderView::refresh() {
     //TODO
     // adjust geometry and repaint header (still looking for a more elegant solution)
     int width = sectionSize(count()-1);
     m_slave->setStretchLastSection(true);  // ugly hack (flaw in Qt? Does anyone know a better way?)
     m_slave->updateGeometry();
     m_slave->setStretchLastSection(false); // ugly hack part 2
     setStretchLastSection(true);  // ugly hack (flaw in Qt? Does anyone know a better way?)
     updateGeometry();
     setStretchLastSection(false); // ugly hack part 2
     resizeSection(count()-1, width);
 
     update();
 }
 
 /*!
   Reacts to a header data change.
 */
 void SpreadsheetHeaderView::headerDataChanged(Qt::Orientation orientation, int logicalFirst, int logicalLast) {
     Q_UNUSED(logicalFirst);
     Q_UNUSED(logicalLast);
     if (orientation == Qt::Horizontal)
         refresh();
 }