File indexing completed on 2024-12-22 05:16:04

 /*
     SPDX-FileCopyrightText: 2022 Janet Blackquill <uhhadd@gmail.com>
 
     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "maskmousearea.h"
 #include <QQuickItemGrabResult>
 
 struct MaskMouseArea::Private {
     QImage maskImage;
     bool containsMouse = false;
 };
 
 MaskMouseArea::MaskMouseArea(QQuickItem *parent)
     : QQuickItem(parent)
     , d(new Private)
 {
     setAcceptHoverEvents(true);
     setAcceptedMouseButtons(Qt::AllButtons);
     updateMask();
     connect(this, &QQuickItem::parentChanged, this, &MaskMouseArea::updateMask);
 }
 
 MaskMouseArea::~MaskMouseArea()
 {
 }
 
 void MaskMouseArea::updateMask()
 {
     if (parentItem() == nullptr || parentItem()->height() < 1) {
         return;
     }
 
     auto result = parentItem()->grabToImage();
     connect(
         result.get(),
         &QQuickItemGrabResult::ready,
         this,
         [result, this] {
             d->maskImage = result->image();
         },
         Qt::SingleShotConnection /* Otherwise leak */);
 }
 
 void MaskMouseArea::geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry)
 {
     Q_UNUSED(newGeometry)
     Q_UNUSED(oldGeometry)
 
     updateMask();
 }
 
 bool MaskMouseArea::contains(const QPointF &point) const
 {
     if (!QQuickItem::contains(point) || d->maskImage.isNull()) {
         return false;
     }
 
     QPoint rounded = point.toPoint();
     const int x = rounded.x(), y = rounded.y();
 
     if (x < 0 || x >= d->maskImage.width()) {
         return false;
     }
     if (y < 0 || y >= d->maskImage.height()) {
         return false;
     }
 
     return d->maskImage.pixel(x, y) != 0;
 }
 
 void MaskMouseArea::mousePressEvent(QMouseEvent *event)
 {
     event->accept();
 }
 
 void MaskMouseArea::mouseReleaseEvent(QMouseEvent *event)
 {
     if (!contains(event->position())) {
         return;
     }
 
     Q_EMIT tapped();
 }
 
 void MaskMouseArea::hoverEnterEvent(QHoverEvent *event)
 {
     Q_UNUSED(event)
     d->containsMouse = true;
     Q_EMIT hoveredChanged();
 }
 
 void MaskMouseArea::hoverLeaveEvent(QHoverEvent *event)
 {
     Q_UNUSED(event)
     d->containsMouse = false;
     Q_EMIT hoveredChanged();
 }
 
 bool MaskMouseArea::hovered() const
 {
     return d->containsMouse;
 }