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  1. 11th June 2015, 13:29 #1
    Stravinsky
    Stravinsky is offline Beginner
    Join Date
    Jun 2015
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    3
    Qt products
    Qt5
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    Windows

    Question How to use Checkboxes in QMenu?

    Hi Everyone.

    I have problem with my program in Qt5. I use QSpreadsheetHeaderView class which is subclass of QHeaderView.

    .cpp:
    Qt Code: 
    1. #include <QPainter>
    2. #include <QCursor>
    3. #include <QHoverEvent>
    4. #include <QMenu>
    5. #include <QRegExp>
    6. #include <QApplication>
    7. #include <QSignalMapper>
    8. #include <QWidgetAction>
    9. #include "QSpreadsheetHeaderView.h"
    10. #include "mainwindow.h"
    11.  
    12. QSpreadsheetHeaderView::QSpreadsheetHeaderView(Qt::Orientation orientation, QWidget * parent)
    13.     : QHeaderView(orientation, parent)
    14. {
    15.     // Required to refresh button menu when the mouse leave the header.
    16.     setAttribute(Qt::WA_Hover, true);
    17. }
    18.  
    19. void QSpreadsheetHeaderView::mousePressEvent ( QMouseEvent * event )
    20. {
    21.     QHeaderView::mousePressEvent(event);
    22.  
    23.     int logicalIndex = logicalIndexAt(event->pos());
    24.  
    25.     if (buttonMenuRect(logicalIndex).contains(event->pos())) {
    26.         QMenu menu(this);
    27.         QAction *hideCol = menu.addAction("Hide");
    28.         QAction *sortAZ = menu.addAction("Sort A->Z");
    29.         QAction *sortZA = menu.addAction("Sort Z->A");
    30.         QMenu * format= menu.addMenu(tr("&Filter"));
    31.         QAction *all = format->addAction("All");
    32.         format->addSeparator();
    33.  
    34.         QSignalMapper *mapper = new QSignalMapper(this);
    35.                for(int i = 0; i < model()->columnCount(); i++)
    36.                {
    37.                    QAction *others = format->addAction(model()->headerData(i, Qt::Horizontal).toString());
    38.                    format->addAction(others);
    39.  
    40.                    QWidgetAction  * addition = new QWidgetAction(&menu);
    41.                    checkBox = new QCheckBox(&menu);
    42.                    checkBox->setText(model()->headerData(i, Qt::Horizontal).toString());
    43.                    addition->setDefaultWidget(checkBox);
    44.                    menu.addAction(addition);
    45.                    mapper->setMapping(addition, i);
    46.                }
    47.  
    48.         // Disable hide column if only one column remains. Otherwise
    49.         // the gui is no more available to show them back.
    50.         hideCol->setEnabled(hiddenSectionCount() < count() - 1);
    51.  
    52.         QAction *res = menu.exec(mapToGlobal(event->pos()));
    53.  
    54.         if (res == hideCol) {
    55.             hideSection(logicalIndex);
    56.             updateSection(logicalIndex-1);
    57.         }
    58.         if (res == sortAZ)
    59.             model()->sort(logicalIndex, Qt::AscendingOrder);
    60.         if (res == sortZA)
    61.             model()->sort(logicalIndex, Qt::DescendingOrder);
    62.     }
    63.  
    64.     // Catch previous arrow mouse click.
    65.     if (prevRect(logicalIndex).contains(event->pos())) {
    66.         showSection(logicalIndex - 1);
    67.         updateSection(logicalIndex - 2);
    68.     }
    69.  
    70.     // Catch next arrow mouse click.
    71.     if (nextRect(logicalIndex).contains(event->pos())) {
    72.         showSection(logicalIndex + 1);
    73.         updateSection(logicalIndex + 2);
    74.     }
    75. }
    76.  
    77. void QSpreadsheetHeaderView::mouseMoveEvent(QMouseEvent * event)
    78. {
    79.     QHeaderView::mouseMoveEvent(event);
    80.  
    81.     // Required to refresh the button menu enable/disable state.
    82.     int logicalIndex = logicalIndexAt(event->pos());
    83.     updateSection(logicalIndex);
    84. }
    85.  
    86. void QSpreadsheetHeaderView::paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const
    87. {
    88.     painter->save();
    89.  
    90.     QHeaderView::paintSection(painter, rect, logicalIndex);
    91.  
    92.     painter->restore();
    93.  
    94.     if (!rect.isValid() || isSortIndicatorShown())
    95.         return;
    96.  
    97.     if (isSectionHidden(logicalIndex - 1)) {
    98.         drawPrevButton(painter, logicalIndex);
    99.     }
    100.  
    101.     if (isSectionHidden(logicalIndex + 1)) {
    102.         drawNextButton(painter, logicalIndex);
    103.     }
    104.  
    105.     QPoint pos = mapFromGlobal(QCursor::pos());
    106.     if (rect.contains(pos)) {
    107.         drawMenuButton(painter, logicalIndex, buttonMenuRect(logicalIndex).contains(pos));
    108.     }
    109. }
    110.  
    111. QRect QSpreadsheetHeaderView::sectionRect(int logicalIndex) const
    112. {
    113.     return QRect(sectionViewportPosition(logicalIndex), 0, sectionSize(logicalIndex), height());
    114. }
    115.  
    116. QRect QSpreadsheetHeaderView::buttonMenuRect(int logicalIndex) const
    117. {
    118.     QRect sr = sectionRect(logicalIndex);
    119.  
    120.     return QRect(sr.right() - 5 - 13, sr.center().y() - 6, 13, 13);
    121. }
    122.  
    123. QRect QSpreadsheetHeaderView::prevRect(int logicalIndex) const
    124. {
    125.     if (isSectionHidden(logicalIndex))
    126.         return QRect();
    127.  
    128.     QRect sr = sectionRect(logicalIndex);
    129.  
    130.     return QRect(sr.left() + 1, sr.center().y() - 6, 13, 13);
    131. }
    132.  
    133. QRect QSpreadsheetHeaderView::nextRect(int logicalIndex) const
    134. {
    135.     if (isSectionHidden(logicalIndex))
    136.         return QRect();
    137.  
    138.     QRect sr = sectionRect(logicalIndex);
    139.  
    140.     return QRect(sr.right() - 13, sr.center().y() - 6, 13, 13);
    141. }
    142.  
    143. void QSpreadsheetHeaderView::drawMenuButton(QPainter *painter, int logicalIndex, bool enabled) const
    144. {
    145.     QRect brect = buttonMenuRect(logicalIndex);
    146.  
    147.     painter->setPen(enabled ? QColor(186,186,186) : QColor(223, 223, 223));
    148.     painter->setBrush(QColor(246,246,246));
    149.     painter->drawRect(brect.adjusted(0,0,-1,-1));
    150.  
    151.     painter->setPen(enabled ? QColor(71,71,71) : QColor(193, 193, 193));
    152.     painter->drawLine(brect.left()+3, brect.top()+5, brect.right()-3, brect.top()+5);
    153.     painter->drawLine(brect.left()+4, brect.top()+6, brect.right()-4, brect.top()+6);
    154.     painter->drawLine(brect.left()+5, brect.top()+7, brect.right()-5, brect.top()+7);
    155.     painter->drawPoint(brect.left()+6, brect.top()+8);
    156. }
    157.  
    158. void QSpreadsheetHeaderView::drawPrevButton(QPainter *painter, int logicalIndex) const
    159. {
    160.     QRect rect = prevRect(logicalIndex);
    161.  
    162.     painter->setPen(QColor(71,71,71));
    163.     painter->drawLine(rect.left()+1, rect.center().y() - 3, rect.left()+1, rect.center().y() + 3);
    164.     painter->drawLine(rect.left()+2, rect.center().y() - 2, rect.left()+2, rect.center().y() + 2);
    165.     painter->drawLine(rect.left()+3, rect.center().y() - 1, rect.left()+3, rect.center().y() + 1);
    166.     painter->drawPoint(rect.left()+4, rect.center().y());
    167. }
    168.  
    169. void QSpreadsheetHeaderView::drawNextButton(QPainter *painter, int logicalIndex) const
    170. {
    171.     QRect rect = nextRect(logicalIndex);
    172.  
    173.     painter->setPen(QColor(71,71,71));
    174.     painter->drawLine(rect.right()-2, rect.center().y() - 3, rect.right()-2, rect.center().y() + 3);
    175.     painter->drawLine(rect.right()-3, rect.center().y() - 2, rect.right()-3, rect.center().y() + 2);
    176.     painter->drawLine(rect.right()-4, rect.center().y() - 1, rect.right()-4, rect.center().y() + 1);
    177.     painter->drawPoint(rect.right()-5, rect.center().y());
    178. }
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    .h
    Qt Code: 
    1. #ifndef QSPREADSHEETHEADERVIEW
    2. #define QSPREADSHEETHEADERVIEW
    3.  
    4. #include <QHeaderView>
    5. #include <QCheckBox>
    6.  
    7. /*!
    8.     \class QSpreadsheetHeaderView
    9.     \brief The QSpreadsheetHeaderView class is a special QHeaderView that mimic Google Spreadsheet header.
    10.     version 1.0
    11.     \sa QHeaderView
    12. */
    13. class QSpreadsheetHeaderView : public QHeaderView
    14. {
    15.     Q_OBJECT
    16.  
    17. public:
    18.     QSpreadsheetHeaderView(Qt::Orientation orientation, QWidget * parent = 0);
    19.     QCheckBox *checkBox;
    20. //protected:
    21.     void mousePressEvent(QMouseEvent * event);
    22.     void mouseMoveEvent(QMouseEvent * event);
    23.     void paintSection(QPainter *painter, const QRect &rect, int logicalIndex) const;
    24.  
    25.     QRect sectionRect(int logicalIndex) const;
    26.     QRect buttonMenuRect(int logicalIndex) const;
    27.     QRect prevRect(int logicalIndex) const;
    28.     QRect nextRect(int logicalIndex) const;
    29.  
    30.     void drawMenuButton(QPainter *painter, int logicalIndex, bool enabled) const;
    31.     void drawPrevButton(QPainter *painter, int logicalIndex) const;
    32.     void drawNextButton(QPainter *painter, int logicalIndex) const;
    33. private:
    34.  
    35. };
    36.  
    37. #endif // QSPREADSHEETHEADERVIEW
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    I add to the menu checkboxes that represent column of the table. I know that every time I use function checboxes are creating once again. I tried signal/slots, implementation of checkboxes array, but my knowledge does not allow to solve this problem. I would like to save value of checkboxes after leaving menu. Also i need to connect this checkboxes with hiding colums. Can someone help me?
    Last edited by Stravinsky; 11th June 2015 at 13:35.
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