Add support for ScrollBar arrow buttons

In order to achieve this, it separates out QQuickSpinButton into a
separate file (and renames it since it's not only purposed for SpinBox
anymore). This allows it to be also used by QQuickScrollBar.

Fixes: QTBUG-88115
Pick-to: 6.0
Change-Id: I2dea42b29750b7bc619031f40a43717fc10c177b
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 157 insertions, 0 deletions

diff --git a/src/quicktemplates2/qquickindicatorbutton_p.cpp b/src/quicktemplates2/qquickindicatorbutton_p.cpp
new file mode 100644
index 00000000..c4130da0
--- /dev/null
+++ b/src/quicktemplates2/qquickindicatorbutton_p.cpp
@@ -0,0 +1,157 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 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 "qquickindicatorbutton_p.h"
+#include "qquickdeferredexecute_p_p.h"
+#include "qquickcontrol_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QQuickIndicatorButton;
+
+static inline QString indicatorName() { return QStringLiteral("indicator"); }
+
+void QQuickIndicatorButtonPrivate::cancelIndicator()
+{
+    Q_Q(QQuickIndicatorButton);
+    quickCancelDeferred(q, indicatorName());
+}
+
+void QQuickIndicatorButtonPrivate::executeIndicator(bool complete)
+{
+    Q_Q(QQuickIndicatorButton);
+    if (indicator.wasExecuted())
+        return;
+
+    if (!indicator || complete)
+        quickBeginDeferred(q, indicatorName(), indicator);
+    if (complete)
+        quickCompleteDeferred(q, indicatorName(), indicator);
+}
+
+QQuickIndicatorButton::QQuickIndicatorButton(QObject *parent)
+    : QObject(*(new QQuickIndicatorButtonPrivate), parent)
+{
+}
+
+bool QQuickIndicatorButton::isPressed() const
+{
+    Q_D(const QQuickIndicatorButton);
+    return d->pressed;
+}
+
+void QQuickIndicatorButton::setPressed(bool pressed)
+{
+    Q_D(QQuickIndicatorButton);
+    if (d->pressed == pressed)
+        return;
+
+    d->pressed = pressed;
+    emit pressedChanged();
+}
+
+QQuickItem *QQuickIndicatorButton::indicator() const
+{
+    QQuickIndicatorButtonPrivate *d = const_cast<QQuickIndicatorButtonPrivate *>(d_func());
+    if (!d->indicator)
+        d->executeIndicator();
+    return d->indicator;
+}
+
+void QQuickIndicatorButton::setIndicator(QQuickItem *indicator)
+{
+    Q_D(QQuickIndicatorButton);
+    if (d->indicator == indicator)
+        return;
+
+    if (!d->indicator.isExecuting())
+        d->cancelIndicator();
+
+    const qreal oldImplicitIndicatorWidth = implicitIndicatorWidth();
+    const qreal oldImplicitIndicatorHeight = implicitIndicatorHeight();
+
+    QQuickControl *par = static_cast<QQuickControl *>(parent());
+
+    QQuickControlPrivate::get(par)->removeImplicitSizeListener(d->indicator);
+    QQuickControlPrivate::hideOldItem(d->indicator);
+    d->indicator = indicator;
+
+    if (indicator) {
+        if (!indicator->parentItem())
+            indicator->setParentItem(par);
+        QQuickControlPrivate::get(par)->addImplicitSizeListener(indicator);
+    }
+
+    if (!qFuzzyCompare(oldImplicitIndicatorWidth, implicitIndicatorWidth()))
+        emit implicitIndicatorWidthChanged();
+    if (!qFuzzyCompare(oldImplicitIndicatorHeight, implicitIndicatorHeight()))
+        emit implicitIndicatorHeightChanged();
+    if (!d->indicator.isExecuting())
+        emit indicatorChanged();
+}
+
+bool QQuickIndicatorButton::isHovered() const
+{
+    Q_D(const QQuickIndicatorButton);
+    return d->hovered;
+}
+
+void QQuickIndicatorButton::setHovered(bool hovered)
+{
+    Q_D(QQuickIndicatorButton);
+    if (d->hovered == hovered)
+        return;
+
+    d->hovered = hovered;
+    emit hoveredChanged();
+}
+
+qreal QQuickIndicatorButton::implicitIndicatorWidth() const
+{
+    Q_D(const QQuickIndicatorButton);
+    if (!d->indicator)
+        return 0;
+    return d->indicator->implicitWidth();
+}
+
+qreal QQuickIndicatorButton::implicitIndicatorHeight() const
+{
+    Q_D(const QQuickIndicatorButton);
+    if (!d->indicator)
+        return 0;
+    return d->indicator->implicitHeight();
+}
+
+QT_END_NAMESPACE