WebEngine Widgets Simple Browser Example▲
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*/
#include
"browser.h"
#include
"browserwindow.h"
#include
"tabwidget.h"
#include
"webpage.h"
#include
"webpopupwindow.h"
#include
"webview.h"
#include <QContextMenuEvent>
#include <QDebug>
#include <QMenu>
#include <QMessageBox>
#include <QTimer>
WebView::
WebView(QWidget *
parent)
:
QWebEngineView(parent)
, m_loadProgress(100
)
{
connect(this
, &
amp;QWebEngineView::
loadStarted, [this
]() {
m_loadProgress =
0
;
emit favIconChanged(favIcon());
}
);
connect(this
, &
amp;QWebEngineView::
loadProgress, [this
](int
progress) {
m_loadProgress =
progress;
}
);
connect(this
, &
amp;QWebEngineView::
loadFinished, [this
](bool
success) {
m_loadProgress =
success ? 100
: -
1
;
emit favIconChanged(favIcon());
}
);
connect(this
, &
amp;QWebEngineView::
iconChanged, [this
](const
QIcon &
amp;) {
emit favIconChanged(favIcon());
}
);
connect(this
, &
amp;QWebEngineView::
renderProcessTerminated,
[this
](QWebEnginePage::
RenderProcessTerminationStatus termStatus, int
statusCode) {
QString status;
switch
(termStatus) {
case
QWebEnginePage::
NormalTerminationStatus:
status =
tr("Render process normal exit"
);
break
;
case
QWebEnginePage::
AbnormalTerminationStatus:
status =
tr("Render process abnormal exit"
);
break
;
case
QWebEnginePage::
CrashedTerminationStatus:
status =
tr("Render process crashed"
);
break
;
case
QWebEnginePage::
KilledTerminationStatus:
status =
tr("Render process killed"
);
break
;
}
QMessageBox::
StandardButton btn =
QMessageBox::
question(window(), status,
tr("Render process exited with code: %1
\n
"
"Do you want to reload the page ?"
).arg(statusCode));
if
(btn ==
QMessageBox::
Yes)
QTimer::
singleShot(0
, [this
] {
reload(); }
);
}
);
}
void
WebView::
setPage(WebPage *
page)
{
createWebActionTrigger(page,QWebEnginePage::
Forward);
createWebActionTrigger(page,QWebEnginePage::
Back);
createWebActionTrigger(page,QWebEnginePage::
Reload);
createWebActionTrigger(page,QWebEnginePage::
Stop);
QWebEngineView::
setPage(page);
}
int
WebView::
loadProgress() const
{
return
m_loadProgress;
}
void
WebView::
createWebActionTrigger(QWebEnginePage *
page, QWebEnginePage::
WebAction webAction)
{
QAction *
action =
page-&
gt;action(webAction);
connect(action, &
amp;QAction::
changed, [this
, action, webAction]{
emit webActionEnabledChanged(webAction, action-&
gt;isEnabled());
}
);
}
bool
WebView::
isWebActionEnabled(QWebEnginePage::
WebAction webAction) const
{
return
page()-&
gt;action(webAction)-&
gt;isEnabled();
}
QIcon WebView::
favIcon() const
{
QIcon favIcon =
icon();
if
(!
favIcon.isNull())
return
favIcon;
if
(m_loadProgress &
lt; 0
) {
static
QIcon errorIcon(QStringLiteral(":dialog-error.png"
));
return
errorIcon;
}
else
if
(m_loadProgress &
lt; 100
) {
static
QIcon loadingIcon(QStringLiteral(":view-refresh.png"
));
return
loadingIcon;
}
else
{
static
QIcon defaultIcon(QStringLiteral(":text-html.png"
));
return
defaultIcon;
}
}
QWebEngineView *
WebView::
createWindow(QWebEnginePage::
WebWindowType type)
{
BrowserWindow *
mainWindow =
qobject_cast&
lt;BrowserWindow*&
gt;(window());
if
(!
mainWindow)
return
nullptr
;
switch
(type) {
case
QWebEnginePage::
WebBrowserTab: {
return
mainWindow-&
gt;tabWidget()-&
gt;createTab();
}
case
QWebEnginePage::
WebBrowserBackgroundTab: {
return
mainWindow-&
gt;tabWidget()-&
gt;createBackgroundTab();
}
case
QWebEnginePage::
WebBrowserWindow: {
return
mainWindow-&
gt;browser()-&
gt;createWindow()-&
gt;currentTab();
}
case
QWebEnginePage::
WebDialog: {
WebPopupWindow *
popup =
new
WebPopupWindow(page()-&
gt;profile());
connect(popup-&
gt;view(), &
amp;WebView::
devToolsRequested, this
, &
amp;WebView::
devToolsRequested);
return
popup-&
gt;view();
}
}
return
nullptr
;
}
void
WebView::
contextMenuEvent(QContextMenuEvent *
event)
{
QMenu *
menu =
page()-&
gt;createStandardContextMenu();
const
QList&
lt;QAction *&
gt; actions =
menu-&
gt;actions();
auto
inspectElement =
std::
find(actions.cbegin(), actions.cend(), page()-&
gt;action(QWebEnginePage::
InspectElement));
if
(inspectElement ==
actions.cend()) {
auto
viewSource =
std::
find(actions.cbegin(), actions.cend(), page()-&
gt;action(QWebEnginePage::
ViewSource));
if
(viewSource ==
actions.cend())
menu-&
gt;addSeparator();
QAction *
action =
new
QAction(menu);
action-&
gt;setText("Open inspector in new window"
);
connect(action, &
amp;QAction::
triggered, [this
]() {
emit devToolsRequested(page()); }
);
QAction *
before(inspectElement ==
actions.cend() ? nullptr
: *
inspectElement);
menu-&
gt;insertAction(before, action);
}
else
{
(*
inspectElement)-&
gt;setText(tr("Inspect element"
));
}
menu-&
gt;popup(event-&
gt;globalPos());
}