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/* This file is (c) 2008-2012 Konstantin Isakov <ikm@goldendict.org>
* Part of GoldenDict. Licensed under GPLv3 or later, see the LICENSE file */
#include "articlewebpage.h"
#include "articlewebview.hh"
#include <QMouseEvent>
#include <QWebEngineView>
#include <QApplication>
#include <QTimer>
#include <QDialog>
#include <QMainWindow>
#ifdef Q_OS_WIN32
#include <qt_windows.h>
#endif
ArticleWebView::ArticleWebView( QWidget *parent ):
QWebEngineView( parent ),
midButtonPressed( false ),
selectionBySingleClick( false )
{
auto page = new ArticleWebPage( this );
connect( page, &ArticleWebPage::linkClicked, this, &ArticleWebView::linkClicked );
this->setPage( page );
}
ArticleWebView::~ArticleWebView()
{
}
void ArticleWebView::setUp( Config::Class * cfg )
{
this->cfg = cfg;
setZoomFactor(cfg->preferences.zoomFactor);
}
QWebEngineView * ArticleWebView::createWindow( QWebEnginePage::WebWindowType type )
{
if(type==QWebEnginePage::WebWindowType::WebDialog)
{
QMainWindow * dlg = new QMainWindow( this );
QWebEngineView * view = new QWebEngineView( dlg );
dlg->setCentralWidget(view);
dlg->resize(400,400);
dlg->show();
return view;
}
return QWebEngineView::createWindow(type);
}
bool ArticleWebView::event( QEvent * event )
{
if( event->type() == QEvent::ChildAdded )
{
QChildEvent * child_ev = static_cast< QChildEvent * >( event );
child_ev->child()->installEventFilter( this );
}
return QWebEngineView::event( event );
}
void ArticleWebView::linkClickedInHtml(QUrl const& ){
//disable single click to simulate dbclick action on the new loaded pages.
singleClickToDbClick=false;
}
bool ArticleWebView::eventFilter(QObject *obj, QEvent *ev) {
if (ev->type() == QEvent::MouseButtonDblClick) {
QMouseEvent *pe = static_cast<QMouseEvent *>(ev);
if (Qt::MouseEventSynthesizedByApplication != pe->source()) {
singleClickToDbClick = false;
dbClicked = true;
}
}
if (ev->type()==QEvent::MouseMove) {
singleClickToDbClick=false;
}
if (ev->type() == QEvent::MouseButtonPress) {
QMouseEvent *pe = static_cast<QMouseEvent *>(ev);
if(pe->button() == Qt::LeftButton)
{
singleClickToDbClick = true;
dbClicked = false;
QTimer::singleShot(QApplication::doubleClickInterval(),this,[=](){
singleClickAction(pe);
});
}
mousePressEvent(pe);
}
if (ev->type() == QEvent::MouseButtonRelease) {
QMouseEvent *pe = static_cast<QMouseEvent *>(ev);
mouseReleaseEvent(pe);
if (dbClicked) {
//emit the signal after button release.emit earlier(in MouseButtonDblClick event) can not get selected text;
doubleClickAction(pe);
}
}
if (ev->type() == QEvent::Wheel) {
QWheelEvent *pe = static_cast<QWheelEvent *>(ev);
wheelEvent(pe);
if ( pe->modifiers().testFlag( Qt::ControlModifier ) )
{
return true;
}
}
if( ev->type() == QEvent::FocusIn )
{
QFocusEvent * pe = static_cast< QFocusEvent * >( ev );
focusInEvent( pe );
return true;
}
return QWebEngineView::eventFilter(obj, ev);
}
void ArticleWebView::mousePressEvent(QMouseEvent *event)
{
if( event->buttons() & Qt::MiddleButton )
midButtonPressed = true;
if( event->buttons() & Qt::XButton1 )
{
back();
}
if( event->buttons() & Qt::XButton2 )
{
forward();
}
}
void ArticleWebView::singleClickAction(QMouseEvent *event )
{
if(!singleClickToDbClick)
return;
if (selectionBySingleClick) {
findText(""); // clear the selection first, if any
//send dbl click event twice? send one time seems not work .weird really. need further investigate.
sendCustomMouseEvent( QEvent::MouseButtonDblClick);
sendCustomMouseEvent( QEvent::MouseButtonDblClick);
}
}
void ArticleWebView::sendCustomMouseEvent( QEvent::Type type) {
QPoint pt = mapFromGlobal(QCursor::pos());
QMouseEvent ev(type, pt, pt, QCursor::pos(), Qt::LeftButton, Qt::LeftButton, Qt::NoModifier,
Qt::MouseEventSynthesizedByApplication);
auto childrens = this->children();
for (auto child:childrens) {
QApplication::sendEvent(child, &ev);
}
}
void ArticleWebView::mouseReleaseEvent(QMouseEvent *event) {
bool noMidButton = !( event->buttons() & Qt::MiddleButton );
// if ( midButtonPressed & noMidButton )
// midButtonPressed = false;
}
void ArticleWebView::doubleClickAction(QMouseEvent *event) {
if (Qt::MouseEventSynthesizedByApplication != event->source()) {
emit doubleClicked(event->pos());
}
}
void ArticleWebView::focusInEvent( QFocusEvent * event )
{
QWebEngineView::focusInEvent( event );
switch( event->reason() )
{
case Qt::MouseFocusReason:
case Qt::TabFocusReason:
case Qt::BacktabFocusReason:
page()->runJavaScript("top.focus();");
break;
default:
break;
}
}
void ArticleWebView::wheelEvent( QWheelEvent *ev )
{
#ifdef Q_OS_WIN32
// Avoid wrong mouse wheel handling in QWebEngineView
// if system preferences is set to "scroll by page"
if( ev->modifiers() == Qt::NoModifier )
{
unsigned nLines;
SystemParametersInfo( SPI_GETWHEELSCROLLLINES, 0, &nLines, 0 );
if( nLines == WHEEL_PAGESCROLL )
{
QKeyEvent kev( QEvent::KeyPress, ev->angleDelta ().y () > 0 ? Qt::Key_PageUp : Qt::Key_PageDown,
Qt::NoModifier );
auto childrens = this->children();
for (auto child : childrens) {
QApplication::sendEvent(child, &kev);
}
ev->accept();
return;
}
}
#endif
if ( ev->modifiers().testFlag( Qt::ControlModifier ) )
{
ev->ignore();
}
else
{
QWebEngineView::wheelEvent( ev );
}
}
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