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) : QObject(parent)
  16 {
  17
  18 }
  19
  20 MiddleClickActionEventFilter::~MiddleClickActionEventFilter() = default;
  21
  22 bool MiddleClickActionEventFilter::eventFilter(QObject *watched, QEvent *event)
  23 {
  24     if (event->type() == QEvent::MouseButtonPress
  25             || event->type() == QEvent::MouseButtonRelease) {
  26         QMouseEvent *me = static_cast<QMouseEvent *>(event);
  27
  28         if (me->button() == Qt::MiddleButton) {
  29             QToolBar *toolBar = qobject_cast<QToolBar *>(watched);
  30             if (toolBar) {
  31                 QAction *action = toolBar->actionAt(me->pos());
  32                 if (action) {
  33                     if (event->type() == QEvent::MouseButtonPress) {
  34                         m_lastMiddlePressedAction = action;
  35                     } else if (event->type() == QEvent::MouseButtonRelease) {
  36                         if (m_lastMiddlePressedAction == action) {
  37                             emit actionMiddleClicked(action);
  38                         }
  39                         m_lastMiddlePressedAction = nullptr;
  40                     }
  41                 }
  42             }
  43             QMenu *menu = qobject_cast<QMenu *>(watched);
  44             if (menu) {
  45                 QAction *action = menu->actionAt(me->pos());
  46                 if (action) {
  47                     if (event->type() == QEvent::MouseButtonPress) {
  48                         m_lastMiddlePressedAction = action;
  49                     } else if (event->type() == QEvent::MouseButtonRelease) {
  50                         if (m_lastMiddlePressedAction == action) {
  51                             emit actionMiddleClicked(action);
  52                             return true;
  53                         }
  54                         m_lastMiddlePressedAction = nullptr;
  55                     }
  56                 }
  57             }
  58         }
  59     }
  60
  61     return QObject::eventFilter(watched, event);
  62 }