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Merge pull request #6905 from jherico/focus_fix

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Fix initial keyboard focus problems
This commit is contained in:
Brad Hefta-Gaub 2016-01-22 15:19:57 -08:00
commit 74c37104f6
1 changed files with 55 additions and 0 deletions
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55
libraries/ui/src/OffscreenUi.cpp
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@ -12,6 +12,7 @@
#include <QtQml/QtQml>
#include <QtQuick/QQuickWindow>
#include <QtGui/QGuiApplication>
#include <AbstractUriHandler.h>
#include <AccountManager.h>
@ -233,6 +234,58 @@ void OffscreenUi::setNavigationFocused(bool focused) {
offscreenFlags->setNavigationFocused(focused);
}
// FIXME HACK....
// This hack is an attempt to work around the 'offscreen UI can't gain keyboard focus' bug
// https://app.asana.com/0/27650181942747/83176475832393
// The problem seems related to https://bugreports.qt.io/browse/QTBUG-50309
//
// The workaround seems to be to give some other window (same process or another process doesn't seem to matter)
// focus and then put focus back on the interface main window.
//
// If I could reliably reproduce this bug I could eventually track down what state change is occuring
// during the process of the main window losing and then gaining focus, but failing that, here's a
// brute force way of triggering that state change at application start in a way that should be nearly
// imperceptible to the user.
class KeyboardFocusHack : public QObject {
Q_OBJECT
public:
KeyboardFocusHack() {
Q_ASSERT(_mainWindow);
QTimer::singleShot(200, [=] {
_hackWindow = new QWindow();
_hackWindow->setFlags(Qt::FramelessWindowHint);
_hackWindow->setGeometry(_mainWindow->x(), _mainWindow->y(), 10, 10);
_hackWindow->show();
_hackWindow->requestActivate();
QTimer::singleShot(200, [=] {
_hackWindow->hide();
_hackWindow->deleteLater();
_hackWindow = nullptr;
_mainWindow->requestActivate();
this->deleteLater();
});
});
}
private:
static QWindow* findMainWindow() {
auto windows = qApp->topLevelWindows();
QWindow* result = nullptr;
for (auto window : windows) {
QVariant isMainWindow = window->property("MainWindow");
if (!qobject_cast<QQuickWindow*>(window)) {
result = window;
break;
}
}
return result;
}
QWindow* const _mainWindow { findMainWindow() };
QWindow* _hackWindow { nullptr };
};
void OffscreenUi::createDesktop(const QUrl& url) {
if (_desktop) {
qDebug() << "Desktop already created";
@ -254,6 +307,8 @@ void OffscreenUi::createDesktop(const QUrl& url) {
_toolWindow = _desktop->findChild<QQuickItem*>("ToolWindow");
new VrMenu(this);
new KeyboardFocusHack();
}
QQuickItem* OffscreenUi::getDesktop() {