File indexing completed on 2025-01-26 04:57:25

 /*
    SPDX-FileCopyrightText: 2016-2024 Laurent Montel <montel@kde.org>
 
    SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "webhittest.h"
 #include "webenginemanagescript.h"
 #include "webhittestresult.h"
 #include <QWebEnginePage>
 
 using namespace WebEngineViewer;
 template<typename Arg, typename R, typename C>
 
 struct InvokeWrapperWebhittest {
     R *receiver;
     void (C::*memberFunction)(Arg);
     void operator()(Arg result)
     {
         (receiver->*memberFunction)(result);
     }
 };
 
 template<typename Arg, typename R, typename C>
 
 InvokeWrapperWebhittest<Arg, R, C> invoke(R *receiver, void (C::*memberFunction)(Arg))
 {
     InvokeWrapperWebhittest<Arg, R, C> wrapper = {receiver, memberFunction};
     return wrapper;
 }
 
 class WebEngineViewer::WebHitTestPrivate
 {
 public:
     WebHitTestPrivate(const QPoint &pos, const QPoint &zoomedPos)
         : m_zoomedPos(zoomedPos)
         , m_pos(pos)
     {
     }
 
     QPoint m_zoomedPos;
     QPoint m_pos;
     QUrl m_pageUrl;
 };
 
 WebHitTest::WebHitTest(QWebEnginePage *page, const QPoint &zoomedPos, const QPoint &pos, QObject *parent)
     : QObject(parent)
     , d(new WebHitTestPrivate(pos, zoomedPos))
 {
     QString source = QStringLiteral(
         "(function() {"
         "var e = document.elementFromPoint(%1, %2);"
         "if (!e)"
         "    return;"
         "function isMediaElement(e) {"
         "    return e.tagName.toLowerCase() == 'audio' || e.tagName.toLowerCase() == 'video';"
         "}"
         "function isEditableElement(e) {"
         "    if (e.isContentEditable)"
         "        return true;"
         "    if (e.tagName.toLowerCase() == 'input' || e.tagName.toLowerCase() == 'textarea')"
         "        return e.getAttribute('readonly') != 'readonly';"
         "    return false;"
         "}"
         "function isSelected(e) {"
         "    var selection = window.getSelection();"
         "    if (selection.type != 'Range')"
         "        return false;"
         "    return window.getSelection().containsNode(e, true);"
         "}"
         "function attributeStr(e, a) {"
         "    return e.getAttribute(a) || '';"
         "}"
         "var res = {"
         "    alternateText: e.getAttribute('alt'),"
         "    boundingRect: '',"
         "    imageUrl: '',"
         "    contentEditable: isEditableElement(e),"
         "    contentSelected: isSelected(e),"
         "    linkTitle: '',"
         "    linkUrl: '',"
         "    mediaUrl: '',"
         "    tagName: e.tagName.toLowerCase()"
         "};"
         "var r = e.getBoundingClientRect();"
         "res.boundingRect = [r.top, r.left, r.width, r.height];"
         "if (e.tagName.toLowerCase() == 'img')"
         "    res.imageUrl = attributeStr(e, 'src').trim();"
         "if (e.tagName.toLowerCase() == 'a') {"
         "    res.linkTitle = e.text;"
         "    res.linkUrl = attributeStr(e, 'href').trim();"
         "}"
         "while (e) {"
         "    if (res.linkTitle == '' && e.tagName.toLowerCase() == 'a')"
         "        res.linkTitle = e.text;"
         "    if (res.linkUrl == '' && e.tagName.toLowerCase() == 'a')"
         "        res.linkUrl = attributeStr(e, 'href').trim();"
         "    if (res.mediaUrl == '' && isMediaElement(e)) {"
         "        res.mediaUrl = e.currentSrc;"
         "        res.mediaPaused = e.paused;"
         "        res.mediaMuted = e.muted;"
         "    }"
         "    e = e.parentElement;"
         "}"
         "return res;"
         "})()");
 
     const QString &js = source.arg(d->m_zoomedPos.x()).arg(d->m_zoomedPos.y());
     d->m_pageUrl = page->url();
     page->runJavaScript(js, WebEngineViewer::WebEngineManageScript::scriptWordId(), invoke(this, &WebHitTest::handleHitTest));
 }
 
 WebHitTest::~WebHitTest() = default;
 
 void WebHitTest::handleHitTest(const QVariant &result)
 {
     const WebHitTestResult webHitResult(d->m_pos, d->m_pageUrl, result);
     Q_EMIT finished(webHitResult);
     deleteLater();
 }
 
 #include "moc_webhittest.cpp"