1 files changed, 106 insertions, 0 deletions
diff --git a/src/quicktemplates2/qquicktooltippopupitem.cpp b/src/quicktemplates2/qquicktooltippopupitem.cpp
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index 0000000000..c3a48f6f0b
--- /dev/null
+++ b/src/quicktemplates2/qquicktooltippopupitem.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2021 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Templates 2 module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qquicktooltippopupitem_p_p.h"
+
+#include <QtQuickTemplates2/private/qquickpopup_p.h>
+
+QT_BEGIN_NAMESPACE
+
+QQuickToolTipPopupItemPrivate::QQuickToolTipPopupItemPrivate(QQuickPopup *popup)
+    : QQuickPopupItemPrivate(popup)
+{
+}
+
+qreal QQuickToolTipPopupItemPrivate::getContentWidth() const
+{
+    auto textItem = qobject_cast<QQuickText*>(contentItem);
+    if (textItem)
+        return textItem->contentWidth();
+
+    return contentItem ? contentItem->implicitWidth() : 0;
+}
+
+void QQuickToolTipPopupItemPrivate::updateContentWidth()
+{
+    Q_Q(QQuickToolTipPopupItem);
+    // Don't need to calculate the implicit contentWidth if an explicit one was set.
+    if (hasContentWidth)
+        return;
+
+    auto textItem = qobject_cast<QQuickText*>(contentItem);
+    if (!textItem) {
+        // It's not a Text item, so use the base contentWidth logic (i.e. use implicitWidth).
+        QQuickPopupItemPrivate::updateContentWidth();
+        return;
+    }
+
+    const qreal oldContentWidth = contentWidth;
+    const qreal newContentWidth = textItem->contentWidth();
+    if (qFuzzyCompare(oldContentWidth, newContentWidth))
+        return;
+
+    contentWidth = newContentWidth;
+    q->contentSizeChange(QSizeF(contentWidth, contentHeight), QSizeF(oldContentWidth, contentHeight));
+    emit q->contentWidthChanged();
+}
+
+QQuickToolTipPopupItem::QQuickToolTipPopupItem(QQuickPopup *popup)
+    : QQuickPopupItem(*(new QQuickToolTipPopupItemPrivate(popup)))
+{
+}
+
+void QQuickToolTipPopupItem::contentItemChange(QQuickItem *newItem, QQuickItem *oldItem)
+{
+    Q_D(QQuickToolTipPopupItem);
+    QQuickPopupItem::contentItemChange(newItem, oldItem);
+
+    // Text's implicitWidth does not account for newlines and hence is too large,
+    // so we need to listen to contentWidth's change signals.
+    auto oldTextItem = qobject_cast<QQuickText*>(oldItem);
+    if (oldTextItem) {
+        QObjectPrivate::disconnect(oldTextItem, &QQuickText::contentWidthChanged,
+            d, &QQuickToolTipPopupItemPrivate::updateContentWidth);
+    }
+
+    auto newTextItem = qobject_cast<QQuickText*>(newItem);
+    if (newTextItem) {
+        QObjectPrivate::connect(newTextItem, &QQuickText::contentWidthChanged,
+            d, &QQuickToolTipPopupItemPrivate::updateContentWidth);
+    }
+}
+
+QT_END_NAMESPACE