File indexing completed on 2024-05-26 04:30:51

 /*
  *  SPDX-FileCopyrightText: 2011 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kis_scratch_pad_event_filter.h"
 #include "kis_scratch_pad.h"
 #include <QWidget>
 #include <QDebug>
 
 
 KisScratchPadEventFilter::KisScratchPadEventFilter(QWidget *parent)
     : QObject(parent),
       m_tabletPressed(false),
       m_pressedButton(Qt::NoButton)
 {
     parent->installEventFilter(this);
     m_scratchPad = qobject_cast<KisScratchPad *>(parent);
 }
 
 void KisScratchPadEventFilter::setWidgetToDocumentTransform(const QTransform &transform)
 {
     m_widgetToDocument = transform;
 }
 
 QWidget* KisScratchPadEventFilter::parentWidget()
 {
     return static_cast<QWidget*>(parent());
 }
 
 KoPointerEvent* KisScratchPadEventFilter::createMouseEvent(QEvent *event)
 {
     QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
     return new KoPointerEvent(mouseEvent, m_widgetToDocument.map(mouseEvent->pos()));
 }
 
 KoPointerEvent* KisScratchPadEventFilter::createTabletEvent(QEvent *event)
 {
     QTabletEvent *tabletEvent = static_cast<QTabletEvent*>(event);
     const QPointF pos = tabletEvent->posF();
     return new KoPointerEvent(tabletEvent, m_widgetToDocument.map(pos));
 }
 
 bool KisScratchPadEventFilter::eventFilter(QObject *obj, QEvent *event)
 {
     Q_UNUSED(obj);
     bool result = false;
 
     QScopedPointer<KoPointerEvent> ev;
 
 
     switch(event->type()) {
     case QEvent::MouseButtonPress:
         if (m_pressedButton != Qt::NoButton) break;
 
         ev.reset(createMouseEvent(event));
         m_pressedButton = ev->button();
         m_scratchPad->pointerPress(ev.data());
         result = true;
         break;
     case QEvent::MouseButtonRelease:
         ev.reset(createMouseEvent(event));
         if (ev->button() != m_pressedButton) break;
 
         m_pressedButton = Qt::NoButton;
         m_scratchPad->pointerRelease(ev.data());
         result = true;
         break;
     case QEvent::MouseMove:
         if(m_tabletPressed) break;
         ev.reset(createMouseEvent(event));
         m_scratchPad->pointerMove(ev.data());
         result = true;
         break;
     case QEvent::TabletPress:
         if (m_pressedButton != Qt::NoButton) break;
 
         m_tabletPressed = true;
         ev.reset(createTabletEvent(event));
         m_pressedButton = ev->button();
         m_scratchPad->pointerPress(ev.data());
         result = true;
         break;
     case QEvent::TabletRelease:
         ev.reset(createTabletEvent(event));
         if (ev->button() != m_pressedButton) break;
 
         m_pressedButton = Qt::NoButton;
         m_scratchPad->pointerRelease(ev.data());
         m_tabletPressed = false;
         result = true;
         break;
     case QEvent::TabletMove:
         ev.reset(createTabletEvent(event));
         m_scratchPad->pointerMove(ev.data());
         result = true;
         break;
     case QEvent::FocusIn:
     case QEvent::FocusOut:
     case QEvent::Show:
     case QEvent::Hide:
         m_scratchPad->resetState();
         m_tabletPressed = false;
         m_pressedButton = Qt::NoButton;
         break;
     default:
         result = false;
     }
 
     if (ev) {
         result = ev->isAccepted();
         event->setAccepted(result);
     }
 
     return result;
 }