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-/****************************************************************************
-**
-** Copyright (C) 2015 The Qt Company Ltd.
-** Contact: http://www.qt.io/licensing/
-**
-** This file is part of the Qt Labs Templates 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 "qquicklabel_p.h"
-#include "qquicklabel_p_p.h"
-#include "qquickcontrol_p.h"
-#include "qquickcontrol_p_p.h"
-
-#include <QtQuick/private/qquickitem_p.h>
-#include <QtQuick/private/qquicktext_p.h>
-#include <QtQuick/private/qquickclipnode_p.h>
-
-#ifndef QT_NO_ACCESSIBILITY
-#include <QtQuick/private/qquickaccessibleattached_p.h>
-#endif
-
-QT_BEGIN_NAMESPACE
-
-/*!
- \qmltype Label
- \inherits Text
- \instantiates QQuickLabel
- \inqmlmodule Qt.labs.controls
- \ingroup text
- \brief A text label.
-
- Label extends \l Text with styling and \l {Control::font}{font}
- inheritance. The default colors and font are style specific. Label
- can also have a visual \l background item.
-
- \image qtlabscontrols-label.png
-
- \snippet qtlabscontrols-label.qml 1
-
- \labs
-
- \sa {Customizing Label}
-*/
-
-QQuickLabel::QQuickLabel(QQuickItem *parent) :
- QQuickText(*(new QQuickLabelPrivate), parent)
-{
- Q_D(QQuickLabel);
- QObjectPrivate::connect(this, &QQuickText::textChanged,
- d, &QQuickLabelPrivate::_q_textChanged);
-}
-
-QQuickLabel::~QQuickLabel()
-{
-}
-
-QQuickLabelPrivate::QQuickLabelPrivate()
- : background(Q_NULLPTR), accessibleAttached(Q_NULLPTR)
-{
-#ifndef QT_NO_ACCESSIBILITY
- QAccessible::installActivationObserver(this);
-#endif
-}
-
-QQuickLabelPrivate::~QQuickLabelPrivate()
-{
-#ifndef QT_NO_ACCESSIBILITY
- QAccessible::removeActivationObserver(this);
-#endif
-}
-
-/*!
- \internal
-
- Determine which font is implicitly imposed on this control by its ancestors
- and QGuiApplication::font, resolve this against its own font (attributes from
- the implicit font are copied over). Then propagate this font to this
- control's children.
-*/
-void QQuickLabelPrivate::resolveFont()
-{
- Q_Q(QQuickLabel);
- inheritFont(QQuickControlPrivate::naturalControlFont(q));
-}
-
-void QQuickLabelPrivate::inheritFont(const QFont &f)
-{
- Q_Q(QQuickLabel);
- QFont parentFont = font.resolve(f);
- parentFont.resolve(font.resolve() | f.resolve());
-
- const QFont defaultFont = QQuickControlPrivate::themeFont(QPlatformTheme::LabelFont);
- const QFont resolvedFont = parentFont.resolve(defaultFont);
-
- const bool changed = resolvedFont != sourceFont;
- q->QQuickText::setFont(resolvedFont);
- if (changed)
- emit q->fontChanged();
-}
-
-void QQuickLabelPrivate::_q_textChanged(const QString &text)
-{
-#ifndef QT_NO_ACCESSIBILITY
- if (accessibleAttached)
- accessibleAttached->setName(text);
-#else
- Q_UNUSED(text)
-#endif
-}
-
-#ifndef QT_NO_ACCESSIBILITY
-void QQuickLabelPrivate::accessibilityActiveChanged(bool active)
-{
- if (accessibleAttached || !active)
- return;
-
- Q_Q(QQuickLabel);
- accessibleAttached = qobject_cast<QQuickAccessibleAttached *>(qmlAttachedPropertiesObject<QQuickAccessibleAttached>(q, true));
- if (accessibleAttached) {
- accessibleAttached->setRole(accessibleRole());
- accessibleAttached->setName(text);
- } else {
- qWarning() << "QQuickLabel: " << q << " QQuickAccessibleAttached object creation failed!";
- }
-}
-
-QAccessible::Role QQuickLabelPrivate::accessibleRole() const
-{
- return QAccessible::StaticText;
-}
-#endif
-
-QFont QQuickLabel::font() const
-{
- return QQuickText::font();
-}
-
-void QQuickLabel::setFont(const QFont &font)
-{
- Q_D(QQuickLabel);
- if (d->font.resolve() == font.resolve() && d->font == font)
- return;
-
- d->font = font;
- d->resolveFont();
-}
-
-/*!
- \qmlproperty Item Qt.labs.controls::Label::background
-
- This property holds the background item.
-
- \note If the background item has no explicit size specified, it automatically
- follows the control's size. In most cases, there is no need to specify
- width or height for a background item.
-
- \sa {Customizing Label}
-*/
-QQuickItem *QQuickLabel::background() const
-{
- Q_D(const QQuickLabel);
- return d->background;
-}
-
-void QQuickLabel::setBackground(QQuickItem *background)
-{
- Q_D(QQuickLabel);
- if (d->background != background) {
- delete d->background;
- d->background = background;
- if (background) {
- background->setParentItem(this);
- if (qFuzzyIsNull(background->z()))
- background->setZ(-1);
- }
- emit backgroundChanged();
- }
-}
-
-void QQuickLabel::classBegin()
-{
- Q_D(QQuickLabel);
- QQuickText::classBegin();
- d->resolveFont();
-}
-
-void QQuickLabel::itemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &value)
-{
- Q_D(QQuickLabel);
- QQuickText::itemChange(change, value);
- if (change == ItemParentHasChanged && value.item)
- d->resolveFont();
-}
-
-void QQuickLabel::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
-{
- Q_D(QQuickLabel);
- QQuickText::geometryChanged(newGeometry, oldGeometry);
- if (d->background) {
- QQuickItemPrivate *p = QQuickItemPrivate::get(d->background);
- if (!p->widthValid) {
- d->background->setWidth(newGeometry.width());
- p->widthValid = false;
- }
- if (!p->heightValid) {
- d->background->setHeight(newGeometry.height());
- p->heightValid = false;
- }
- }
-}
-
-QT_END_NAMESPACE
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