1// Copyright (C) 2024 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include "qquickfluentwinui3focusframe_p.h"
5
6#include <private/qquickitem_p.h>
7
8#include <QtCore/qmetaobject.h>
9
10#include <QtGui/qguiapplication.h>
11
12#include <QtQml/qqmlengine.h>
13#include <QtQml/qqmlcontext.h>
14#include <QtQml/qqmlcomponent.h>
15
16
17QT_BEGIN_NAMESPACE
18
19QScopedPointer<QQuickItem> QQuickFluentWinUI3FocusFrame::m_focusFrame;
20
21QQuickFluentWinUI3FocusFrame::QQuickFluentWinUI3FocusFrame()
22{
23 connect(qGuiApp, signal: &QGuiApplication::focusObjectChanged, context: this, slot: [this](QObject *focusObject){
24 if (QQuickControl *control = qobject_cast<QQuickControl *>(object: focusObject);
25 control && (control->focusReason() == Qt::FocusReason::TabFocusReason
26 || control->focusReason() == Qt::FocusReason::BacktabFocusReason
27 || control->focusReason() == Qt::FocusReason::OtherFocusReason)) {
28 moveToItem(item: control);
29 } else {
30 moveToItem(item: nullptr);
31 }
32 });
33}
34
35QQuickItem *QQuickFluentWinUI3FocusFrame::createFocusFrame(QQmlContext *context)
36{
37 QQmlComponent component(context->engine(), "QtQuick.Controls.FluentWinUI3.impl", "FocusFrame");
38 auto frame = qobject_cast<QQuickItem *>(o: component.create());
39 if (!frame)
40 return nullptr;
41 return frame;
42}
43
44void QQuickFluentWinUI3FocusFrame::moveToItem(QQuickControl *item)
45{
46 if (!m_focusFrame) {
47 const auto context = QQmlEngine::contextForObject(item);
48 // In certain cases like QQuickWebEngineView, the item
49 // gets focus even though it has no QQmlEngine associated with its context.
50 // We need the engine for creating the focus frame component.
51 if (!context || !context->engine())
52 return;
53 m_focusFrame.reset(other: createFocusFrame(context));
54 if (!m_focusFrame) {
55 qWarning() << "Failed to create FocusFrame";
56 return;
57 }
58 QQuickItemPrivate::get(item: m_focusFrame.get())->setTransparentForPositioner(true);
59 }
60
61 const auto target = getFocusTarget(focusItem: item);
62 QMetaObject::invokeMethod(obj: m_focusFrame.data(), member: "moveToItem",
63 Q_ARG(QVariant, QVariant::fromValue(target)));
64}
65
66QQuickControl *QQuickFluentWinUI3FocusFrame::getFocusTarget(QQuickControl *focusItem) const
67{
68 if (!focusItem)
69 return nullptr;
70
71 const auto parentItem = focusItem->parentItem();
72 if (!parentItem)
73 return nullptr;
74
75 // The control that gets active focus can be a child of the control (e.g
76 // editable ComboBox). In that case, resolve the actual control first.
77 const auto proxy = focusItem->property(name: "__focusFrameControl").value<QQuickControl *>();
78 const auto control = proxy ? proxy : focusItem;
79 auto target = control->property(name: "__focusFrameTarget").value<QQuickControl *>();
80
81 return target;
82}
83
84QT_END_NAMESPACE
85
86#include "moc_qquickfluentwinui3focusframe_p.cpp"
87

source code of qtdeclarative/src/quickcontrols/fluentwinui3/impl/qquickfluentwinui3focusframe.cpp