src/middleclickactioneventfilter.cpp

   1 /*
   2  * SPDX-FileCopyrightText: 2017 Kai Uwe Broulik <kde@privat.broulik.de>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-or-later
   5  */
   6
   7 #include "middleclickactioneventfilter.h"
   8
   9 #include <QAction>
  10 #include <QEvent>
  11 #include <QMenu>
  12 #include <QMouseEvent>
  13 #include <QToolBar>
  14
  15 MiddleClickActionEventFilter::MiddleClickActionEventFilter(QObject *parent)
  16     : QObject(parent)
  17 {
  18 }
  19
  20 MiddleClickActionEventFilter::~MiddleClickActionEventFilter() = default;
  21
  22 bool MiddleClickActionEventFilter::eventFilter(QObject *watched, QEvent *event)
  23 {
  24     if (event->type() == QEvent::MouseButtonPress || event->type() == QEvent::MouseButtonRelease) {
  25         QMouseEvent *me = static_cast<QMouseEvent *>(event);
  26
  27         if (me->button() == Qt::MiddleButton) {
  28             QToolBar *toolBar = qobject_cast<QToolBar *>(watched);
  29             if (toolBar) {
  30                 QAction *action = toolBar->actionAt(me->pos());
  31                 if (action) {
  32                     if (event->type() == QEvent::MouseButtonPress) {
  33                         m_lastMiddlePressedAction = action;
  34                     } else if (event->type() == QEvent::MouseButtonRelease) {
  35                         if (m_lastMiddlePressedAction == action) {
  36                             Q_EMIT actionMiddleClicked(action);
  37                         }
  38                         m_lastMiddlePressedAction = nullptr;
  39                     }
  40                 }
  41             }
  42             QMenu *menu = qobject_cast<QMenu *>(watched);
  43             if (menu) {
  44                 QAction *action = menu->actionAt(me->pos());
  45                 if (action) {
  46                     if (event->type() == QEvent::MouseButtonPress) {
  47                         m_lastMiddlePressedAction = action;
  48                     } else if (event->type() == QEvent::MouseButtonRelease) {
  49                         if (m_lastMiddlePressedAction == action) {
  50                             Q_EMIT actionMiddleClicked(action);
  51                             return true;
  52                         }
  53                         m_lastMiddlePressedAction = nullptr;
  54                     }
  55                 }
  56             }
  57         }
  58     }
  59
  60     return QObject::eventFilter(watched, event);
  61 }
  62
  63 #include "moc_middleclickactioneventfilter.cpp"