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use Eventloop to convert async function to sync function.based on current situation ,I think it would be better to keep the sync mode. webengine use aysnc callback,while webkit use sync function

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yifang.xiao 2021-11-30 10:53:18 +08:00 committed by yifang
parent 303179b410
commit c56407863c
1 changed files with 26 additions and 35 deletions
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61
articleview.cc
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@ -2384,15 +2384,16 @@ void ArticleView::performFindOperation( bool restart, bool backwards, bool check
bool ArticleView::findText(QString& text, const QWebEnginePage::FindFlags& f)
{
bool r;
QSemaphore sem(1);
sem.acquire(1);
ui.definition->findText(text, f, [&sem,&r](bool result) {
r = result;
sem.release(1);
});
sem.acquire(1);
return r;
bool r;
//turn async to sync invoke.
QEventLoop loop;
ui.definition->findText(text, f, [&](bool result)
{
r = result;
loop.quit();
});
loop.exec();
return r;
}
void ArticleView::reloadStyleSheet()
@ -2591,14 +2592,15 @@ void ArticleView::highlightFTSResults()
}
QString ArticleView::getWebPageTextSync(QWebEnginePage * page){
QSemaphore sem(1);
sem.acquire(1);
QString planText;
QEventLoop loop;
page->toPlainText([&](const QString & result){
if(result.valid())
planText = result;
sem.release(1);
loop.quit();
});
sem.acquire(1);
loop.exec();
return planText;
}
@ -2769,29 +2771,18 @@ QString ArticleView::insertSpans( QString const & html )
return newContent;
}
QString ArticleView::checkElement( QWebEnginePage & elem, QPoint const & pt )
QString ArticleView::checkElement( QWebEnginePage & page, QPoint const & pt )
{
QSemaphore semaphore(1);
semaphore.acquire(1);
QString nodeValue;
elem.runJavaScript(QString(
" var a= document.elementFromPoint(%1,%2);"
"var nodename=a.nodeName.toLowerCase();"
"if(nodename==\"body\"||nodename==\"html\"||nodename==\"head\")"
"{"
" return '';"
"}"
"return a.textContent;")
.arg(pt.x()).arg(pt.y()),[&semaphore,&nodeValue](const QVariant & result){
semaphore.release();
nodeValue=result.toString();
});
semaphore.acquire(1);
return nodeValue;
return runJavaScriptSync(page, QString(
" var a= document.elementFromPoint(%1,%2);"
"var nodename=a.nodeName.toLowerCase();"
"if(nodename==\"body\"||nodename==\"html\"||nodename==\"head\")"
"{"
" return '';"
"}"
"return a.textContent;")
.arg(pt.x())
.arg(pt.y()));
}
QString ArticleView::wordAtPoint( int x, int y )