Add DelayButton

[ChangeLog][Controls][DelayButton] Added DelayButton.

Change-Id: I94820dfb41ba9b90f0a29cda01ac476b54cf3de8
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

19 files changed, 835 insertions, 1 deletions

diff --git a/src/imports/controls/DelayButton.qml b/src/imports/controls/DelayButton.qml
new file mode 100644
index 00000000..4a569fcf
--- /dev/null
+++ b/src/imports/controls/DelayButton.qml
@@ -0,0 +1,126 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Controls 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.9
+import QtQuick.Controls 2.2
+import QtQuick.Controls.impl 2.2
+import QtQuick.Templates 2.2 as T
+
+T.DelayButton {
+    id: control
+
+    implicitWidth: Math.max(background ? background.implicitWidth : 0,
+                            contentItem.implicitWidth + leftPadding + rightPadding)
+    implicitHeight: Math.max(background ? background.implicitHeight : 0,
+                             contentItem.implicitHeight + topPadding + bottomPadding)
+    baselineOffset: contentItem.y + contentItem.baselineOffset
+
+    padding: 6
+    leftPadding: padding + 2
+    rightPadding: padding + 2
+
+    transition: Transition {
+        NumberAnimation {
+            duration: control.delay * (control.pressed ? 1.0 - control.progress : 0.3 * control.progress)
+        }
+    }
+
+    contentItem: Item {
+        implicitWidth: label.implicitWidth
+        implicitHeight: label.implicitHeight
+
+        Item {
+            x: -control.leftPadding + (control.progress * control.width)
+            width: (1.0 - control.progress) * control.width
+            height: parent.height
+
+            clip: control.progress > 0
+            visible: control.progress < 1
+
+            Text {
+                id: label
+                x: -parent.x
+                width: control.availableWidth
+                height: parent.height
+
+                text: control.text
+                font: control.font
+                opacity: enabled ? 1 : 0.3
+                color: control.visualFocus ? Default.focusColor : (control.down ? Default.textDarkColor : Default.textColor)
+                horizontalAlignment: Text.AlignHCenter
+                verticalAlignment: Text.AlignVCenter
+                elide: Text.ElideRight
+            }
+        }
+
+        Item {
+            x: -control.leftPadding
+            width: control.progress * control.width
+            height: parent.height
+
+            clip: control.progress > 0
+            visible: control.progress > 0
+
+            Text {
+                x: control.leftPadding
+                width: control.availableWidth
+                height: parent.height
+
+                text: control.text
+                font: control.font
+                opacity: enabled ? 1 : 0.3
+                color: Default.textLightColor
+                horizontalAlignment: Text.AlignHCenter
+                verticalAlignment: Text.AlignVCenter
+                elide: Text.ElideRight
+            }
+        }
+    }
+
+    background: Rectangle {
+        implicitWidth: 100
+        implicitHeight: 40
+        color: control.visualFocus ? (control.down ? Default.focusPressedColor : Default.focusLightColor) : (control.down ? Default.buttonPressedColor : Default.buttonColor)
+        border.color: Default.focusColor
+        border.width: control.visualFocus ? 2 : 0
+
+        Rectangle {
+            width: control.progress * parent.width
+            height: parent.height
+            color: control.visualFocus ? (control.down ? Default.buttonCheckedFocusColor : Default.focusColor) : (control.down ? Default.buttonCheckedPressedColor : Default.textColor)
+        }
+    }
+}
diff --git a/src/imports/controls/controls.pri b/src/imports/controls/controls.pri
index 8a262694..04e31103 100644
--- a/src/imports/controls/controls.pri
+++ b/src/imports/controls/controls.pri
@@ -21,6 +21,7 @@ QML_CONTROLS = \
     ComboBox.qml \
     Container.qml \
     Control.qml \
+    DelayButton.qml \
     Dial.qml \
     Dialog.qml \
     DialogButtonBox.qml \
diff --git a/src/imports/controls/doc/images/qtquickcontrols2-delaybutton-custom.png b/src/imports/controls/doc/images/qtquickcontrols2-delaybutton-custom.png
new file mode 100644
index 00000000..be7f2586
--- /dev/null
+++ b/src/imports/controls/doc/images/qtquickcontrols2-delaybutton-custom.png
diff --git a/src/imports/controls/doc/images/qtquickcontrols2-delaybutton.gif b/src/imports/controls/doc/images/qtquickcontrols2-delaybutton.gif
new file mode 100644
index 00000000..16a198f9
--- /dev/null
+++ b/src/imports/controls/doc/images/qtquickcontrols2-delaybutton.gif
diff --git a/src/imports/controls/doc/snippets/screenshots/qtquickcontrols2-delaybutton-custom.qml b/src/imports/controls/doc/snippets/screenshots/qtquickcontrols2-delaybutton-custom.qml
new file mode 100644
index 00000000..2453e2d6
--- /dev/null
+++ b/src/imports/controls/doc/snippets/screenshots/qtquickcontrols2-delaybutton-custom.qml
@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** 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 Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: http://www.gnu.org/copyleft/fdl.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//! [file]
+import QtQuick 2.6
+import QtQuick.Controls 2.2
+
+DelayButton {
+    id: control
+    checked: true
+    text: qsTr("Delay\nButton")
+
+    contentItem: Text {
+        text: control.text
+        font: control.font
+        opacity: enabled ? 1.0 : 0.3
+        color: "white"
+        horizontalAlignment: Text.AlignHCenter
+        verticalAlignment: Text.AlignVCenter
+        elide: Text.ElideRight
+    }
+
+    background: Rectangle {
+        implicitWidth: 100
+        implicitHeight: 100
+        opacity: enabled ? 1 : 0.3
+        color: control.down ? "#17a81a" : "#21be2b"
+        radius: size / 2
+
+        readonly property real size: Math.min(control.width, control.height)
+        width: size
+        height: size
+        anchors.centerIn: parent
+
+        Canvas {
+            id: canvas
+            anchors.fill: parent
+
+            Connections {
+                target: control
+                onProgressChanged: canvas.requestPaint()
+            }
+
+            onPaint: {
+                var ctx = getContext("2d")
+                ctx.clearRect(0, 0, width, height)
+                ctx.strokeStyle = "white"
+                ctx.lineWidth = parent.size / 20
+                ctx.beginPath()
+                var startAngle = Math.PI / 5 * 3
+                var endAngle = startAngle + control.progress * Math.PI / 5 * 9
+                ctx.arc(width / 2, height / 2, width / 2 - ctx.lineWidth / 2 - 2, startAngle, endAngle)
+                ctx.stroke()
+            }
+        }
+    }
+}
+//! [file]
diff --git a/src/imports/controls/doc/src/qtquickcontrols2-buttons.qdoc b/src/imports/controls/doc/src/qtquickcontrols2-buttons.qdoc
index 434cf839..6080d7b1 100644
--- a/src/imports/controls/doc/src/qtquickcontrols2-buttons.qdoc
+++ b/src/imports/controls/doc/src/qtquickcontrols2-buttons.qdoc
@@ -99,6 +99,21 @@
 
     \b {See also} \l CheckBox
 
+    \section1 DelayButton Control
+
+    \l DelayButton is a button that incorporates a delay before triggering an action.
+    This delay prevents accidental presses.
+
+    \image qtquickcontrols2-delaybutton.gif
+
+    Recommendations:
+    \list
+    \li Use in touch user interfaces.
+    \li Use for actions that must be triggered with care.
+    \endlist
+
+    \b {See also} \l Button and \l AbstractButton
+
     \section1 RadioButton Control
 
     \image qtquickcontrols2-radiobutton.gif
diff --git a/src/imports/controls/doc/src/qtquickcontrols2-customize.qdoc b/src/imports/controls/doc/src/qtquickcontrols2-customize.qdoc
index 06201404..82914610 100644
--- a/src/imports/controls/doc/src/qtquickcontrols2-customize.qdoc
+++ b/src/imports/controls/doc/src/qtquickcontrols2-customize.qdoc
@@ -419,6 +419,16 @@
         \snippet qtquickcontrols2-combobox-custom.qml file
 
 
+    \section2 Customizing DelayButton
+
+        DelayButton consists of two visual items: \l {Control::background}{background}
+        and \l {Control::contentItem}{content item}.
+
+        \image qtquickcontrols2-delaybutton-custom.png
+
+        \snippet qtquickcontrols2-delaybutton-custom.qml file
+
+
     \section2 Customizing Dial
 
         Dial consists of two visual items: \l {Control::background}{background}
diff --git a/src/imports/controls/doc/src/qtquickcontrols2-differences.qdoc b/src/imports/controls/doc/src/qtquickcontrols2-differences.qdoc
index 01429b94..4ea5e4e6 100644
--- a/src/imports/controls/doc/src/qtquickcontrols2-differences.qdoc
+++ b/src/imports/controls/doc/src/qtquickcontrols2-differences.qdoc
@@ -471,7 +471,7 @@
         \li
     \row
         \li \l [QML QtQuickExtras] {DelayButton}
-        \li \mdash
+        \li \l [QML QtQuickControls2] {DelayButton}
         \li
         \li
     \row
diff --git a/src/imports/controls/material/DelayButton.qml b/src/imports/controls/material/DelayButton.qml
new file mode 100644
index 00000000..8bc48784
--- /dev/null
+++ b/src/imports/controls/material/DelayButton.qml
@@ -0,0 +1,126 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Controls 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.9
+import QtQuick.Templates 2.2 as T
+import QtQuick.Controls.Material 2.2
+import QtQuick.Controls.Material.impl 2.2
+
+T.DelayButton {
+    id: control
+
+    implicitWidth: Math.max(background ? background.implicitWidth : 0,
+                            contentItem.implicitWidth + leftPadding + rightPadding)
+    implicitHeight: Math.max(background ? background.implicitHeight : 0,
+                             contentItem.implicitHeight + topPadding + bottomPadding)
+    baselineOffset: contentItem.y + contentItem.baselineOffset
+
+    // external vertical padding is 6 (to increase touch area)
+    padding: 12
+    leftPadding: padding - 4
+    rightPadding: padding - 4
+
+    Material.elevation: control.down ? 8 : 2
+
+    transition: Transition {
+        NumberAnimation {
+            duration: control.delay * (control.pressed ? 1.0 - control.progress : 0.3 * control.progress)
+        }
+    }
+
+    contentItem: Text {
+        text: control.text
+        font: control.font
+        color: !control.enabled ? control.Material.hintTextColor : control.Material.foreground
+        horizontalAlignment: Text.AlignHCenter
+        verticalAlignment: Text.AlignVCenter
+        elide: Text.ElideRight
+    }
+
+    // TODO: Add a proper ripple/ink effect for mouse/touch input and focus state
+    background: Rectangle {
+        implicitWidth: 64
+        implicitHeight: 48
+
+        // external vertical padding is 6 (to increase touch area)
+        y: 6
+        width: parent.width
+        height: parent.height - 12
+        radius: 2
+        color: !control.enabled ? control.Material.buttonDisabledColor : control.Material.buttonColor
+
+        PaddedRectangle {
+            y: parent.height - 4
+            width: parent.width
+            height: 4
+            radius: 2
+            topPadding: -2
+            clip: true
+            color: control.checked && control.enabled ? control.Material.accentColor : control.Material.secondaryTextColor
+
+            PaddedRectangle {
+                width: parent.width * control.progress
+                height: 4
+                radius: 2
+                topPadding: -2
+                rightPadding: Math.max(-2, width - parent.width)
+                clip: true
+                color: control.Material.accentColor
+            }
+        }
+
+        Behavior on color {
+            ColorAnimation {
+                duration: 400
+            }
+        }
+
+        layer.enabled: control.enabled && control.Material.buttonColor.a > 0
+        layer.effect: ElevationEffect {
+            elevation: control.Material.elevation
+        }
+
+        Ripple {
+            clipRadius: 2
+            width: parent.width
+            height: parent.height
+            pressed: control.pressed
+            anchor: control
+            active: control.down || control.visualFocus || control.hovered
+            color: control.Material.rippleColor
+        }
+    }
+}
diff --git a/src/imports/controls/material/material.pri b/src/imports/controls/material/material.pri
index 5f70ca32..64d91442 100644
--- a/src/imports/controls/material/material.pri
+++ b/src/imports/controls/material/material.pri
@@ -22,6 +22,7 @@ QML_FILES += \
     $$PWD/CheckIndicator.qml \
     $$PWD/ComboBox.qml \
     $$PWD/CursorDelegate.qml \
+    $$PWD/DelayButton.qml \
     $$PWD/Dial.qml \
     $$PWD/Dialog.qml \
     $$PWD/DialogButtonBox.qml \
diff --git a/src/imports/controls/qtquickcontrols2plugin.cpp b/src/imports/controls/qtquickcontrols2plugin.cpp
index 5af9b910..70f6879b 100644
--- a/src/imports/controls/qtquickcontrols2plugin.cpp
+++ b/src/imports/controls/qtquickcontrols2plugin.cpp
@@ -141,6 +141,7 @@ void QtQuickControls2Plugin::registerTypes(const char *uri)
     qmlRegisterType(selector.select(QStringLiteral("ToolSeparator.qml")), uri, 2, 1, "ToolSeparator");
 
     // QtQuick.Controls 2.2 (new types in Qt 5.9)
+    qmlRegisterType(selector.select(QStringLiteral("DelayButton.qml")), uri, 2, 2, "DelayButton");
 }
 
 static QObject *styleSingleton(QQmlEngine *engine, QJSEngine *scriptEngine)
diff --git a/src/imports/controls/universal/DelayButton.qml b/src/imports/controls/universal/DelayButton.qml
new file mode 100644
index 00000000..9d43be44
--- /dev/null
+++ b/src/imports/controls/universal/DelayButton.qml
@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Controls 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.9
+import QtQuick.Templates 2.2 as T
+import QtQuick.Controls.Universal 2.2
+
+T.DelayButton {
+    id: control
+
+    implicitWidth: Math.max(background ? background.implicitWidth : 0,
+                            contentItem.implicitWidth + leftPadding + rightPadding)
+    implicitHeight: Math.max(background ? background.implicitHeight : 0,
+                             contentItem.implicitHeight + topPadding + bottomPadding)
+    baselineOffset: contentItem.y + contentItem.baselineOffset
+
+    padding: 8
+    topPadding: padding - 4
+    bottomPadding: padding - 4
+
+    property bool useSystemFocusVisuals: true
+
+    transition: Transition {
+        NumberAnimation {
+            duration: control.delay * (control.pressed ? 1.0 - control.progress : 0.3 * control.progress)
+        }
+    }
+
+    contentItem: Text {
+        text: control.text
+        font: control.font
+        elide: Text.ElideRight
+        horizontalAlignment: Text.AlignHCenter
+        verticalAlignment: Text.AlignVCenter
+
+        opacity: enabled ? 1.0 : 0.2
+        color: control.Universal.foreground
+    }
+
+    background: Rectangle {
+        implicitWidth: 32
+        implicitHeight: 32
+
+        color: control.down ? control.Universal.baseMediumLowColor :
+               control.enabled && control.checked ? control.Universal.accent : control.Universal.baseLowColor
+
+        Rectangle {
+            visible: !control.checked
+            width: parent.width * control.progress
+            height: parent.height
+            color: control.Universal.accent
+        }
+
+        Rectangle {
+            width: parent.width
+            height: parent.height
+            color: "transparent"
+            visible: control.hovered
+            border.width: 2 // ButtonBorderThemeThickness
+            border.color: control.Universal.baseMediumLowColor
+        }
+    }
+}
diff --git a/src/imports/controls/universal/universal.pri b/src/imports/controls/universal/universal.pri
index 833bf2b6..c80a2dfc 100644
--- a/src/imports/controls/universal/universal.pri
+++ b/src/imports/controls/universal/universal.pri
@@ -6,6 +6,7 @@ QML_FILES += \
     $$PWD/CheckDelegate.qml \
     $$PWD/CheckIndicator.qml \
     $$PWD/ComboBox.qml \
+    $$PWD/DelayButton.qml \
     $$PWD/Dial.qml \
     $$PWD/Dialog.qml \
     $$PWD/DialogButtonBox.qml \
diff --git a/src/imports/templates/qtquicktemplates2plugin.cpp b/src/imports/templates/qtquicktemplates2plugin.cpp
index b78d3146..d7f6cf18 100644
--- a/src/imports/templates/qtquicktemplates2plugin.cpp
+++ b/src/imports/templates/qtquicktemplates2plugin.cpp
@@ -46,6 +46,7 @@
 #include <QtQuickTemplates2/private/qquickcombobox_p.h>
 #include <QtQuickTemplates2/private/qquickcontrol_p.h>
 #include <QtQuickTemplates2/private/qquickcontainer_p.h>
+#include <QtQuickTemplates2/private/qquickdelaybutton_p.h>
 #include <QtQuickTemplates2/private/qquickdial_p.h>
 #include <QtQuickTemplates2/private/qquickdialog_p.h>
 #include <QtQuickTemplates2/private/qquickdialogbuttonbox_p.h>
@@ -225,6 +226,7 @@ void QtQuickTemplates2Plugin::registerTypes(const char *uri)
     // QtQuick.Templates 2.2 (new types and revisions in Qt 5.9)
     qmlRegisterRevision<QQuickAbstractButton, 2>(uri, 2, 2);
     qmlRegisterType<QQuickComboBox, 2>(uri, 2, 2, "ComboBox");
+    qmlRegisterType<QQuickDelayButton>(uri, 2, 2, "DelayButton");
     qmlRegisterType<QQuickDial, 2>(uri, 2, 2, "Dial");
     qmlRegisterType<QQuickDrawer, 2>(uri, 2, 2, "Drawer");
     qmlRegisterType<QQuickRangeSlider, 2>(uri, 2, 2, "RangeSlider");
diff --git a/src/quicktemplates2/qquickabstractbutton.cpp b/src/quicktemplates2/qquickabstractbutton.cpp
index c4fde34d..7ca776cd 100644
--- a/src/quicktemplates2/qquickabstractbutton.cpp
+++ b/src/quicktemplates2/qquickabstractbutton.cpp
@@ -400,6 +400,7 @@ void QQuickAbstractButton::setPressed(bool isPressed)
     d->pressed = isPressed;
     setAccessibleProperty("pressed", isPressed);
     emit pressedChanged();
+    buttonChange(ButtonPressedChanged);
 
     if (!d->explicitDown) {
         setDown(d->pressed);
diff --git a/src/quicktemplates2/qquickabstractbutton_p.h b/src/quicktemplates2/qquickabstractbutton_p.h
index b8c9476f..8a1d960b 100644
--- a/src/quicktemplates2/qquickabstractbutton_p.h
+++ b/src/quicktemplates2/qquickabstractbutton_p.h
@@ -130,6 +130,7 @@ protected:
         ButtonAutoRepeatChange,
         ButtonCheckedChange,
         ButtonCheckableChange,
+        ButtonPressedChanged,
         ButtonTextChange
     };
     virtual void buttonChange(ButtonChange change);
diff --git a/src/quicktemplates2/qquickdelaybutton.cpp b/src/quicktemplates2/qquickdelaybutton.cpp
new file mode 100644
index 00000000..3c8eaeb0
--- /dev/null
+++ b/src/quicktemplates2/qquickdelaybutton.cpp
@@ -0,0 +1,271 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 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 "qquickdelaybutton_p.h"
+#include "qquickabstractbutton_p_p.h"
+
+#include <QtQuick/private/qquickanimation_p.h>
+#include <QtQuick/private/qquicktransition_p.h>
+#include <QtQuick/private/qquicktransitionmanager_p_p.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \qmltype DelayButton
+    \inherits AbstractButton
+    \instantiates QQuickDelayButton
+    \inqmlmodule QtQuick.Controls
+    \since 5.9
+    \ingroup qtquickcontrols2-buttons
+    \brief Check button that triggers when held down long enough.
+
+    \image qtquickcontrols2-delaybutton.gif
+
+    DelayButton is a checkable button that incorporates a delay before the
+    button becomes \l {AbstractButton::}{checked} and the \l activated()
+    signal is emitted. This delay prevents accidental presses.
+
+    The current progress is expressed as a decimal value between \c 0.0
+    and \c 1.0. The time it takes for \l activated() to be emitted is
+    measured in milliseconds, and can be set with the \l delay property.
+
+    The progress is indicated by a progress indicator on the button.
+
+    \sa {Customizing DelayButton}, {Button Controls}
+*/
+
+/*!
+    \qmlsignal QtQuick.Controls::DelayButton::activated()
+
+    This signal is emitted when \l progress reaches \c 1.0.
+*/
+
+class QQuickDelayTransitionManager;
+
+class QQuickDelayButtonPrivate : public QQuickAbstractButtonPrivate
+{
+    Q_DECLARE_PUBLIC(QQuickDelayButton)
+
+public:
+    QQuickDelayButtonPrivate();
+
+    void beginTransition(qreal to);
+    void finishTransition();
+    void cancelTransition();
+
+    int delay;
+    qreal progress;
+    QQuickTransition *transition;
+    QScopedPointer<QQuickDelayTransitionManager> transitionManager;
+};
+
+class QQuickDelayTransitionManager : public QQuickTransitionManager
+{
+public:
+    QQuickDelayTransitionManager(QQuickDelayButton *button) : m_button(button) { }
+
+    void transition(QQuickTransition *transition, qreal progress);
+
+protected:
+    void finished() override;
+
+private:
+    QQuickDelayButton *m_button;
+};
+
+void QQuickDelayTransitionManager::transition(QQuickTransition *transition, qreal progress)
+{
+    qmlExecuteDeferred(transition);
+
+    QQmlProperty defaultTarget(m_button, QLatin1String("progress"));
+    QQmlListProperty<QQuickAbstractAnimation> animations = transition->animations();
+    const int count = animations.count(&animations);
+    for (int i = 0; i < count; ++i) {
+        QQuickAbstractAnimation *anim = animations.at(&animations, i);
+        anim->setDefaultTarget(defaultTarget);
+    }
+
+    QList<QQuickStateAction> actions;
+    actions << QQuickStateAction(m_button, QLatin1String("progress"), progress);
+    QQuickTransitionManager::transition(actions, transition, m_button);
+}
+
+void QQuickDelayTransitionManager::finished()
+{
+    if (qFuzzyCompare(m_button->progress(), 1.0))
+        emit m_button->activated();
+}
+
+QQuickDelayButtonPrivate::QQuickDelayButtonPrivate()
+    : delay(3000),
+      progress(0.0),
+      transition(nullptr)
+{
+}
+
+void QQuickDelayButtonPrivate::beginTransition(qreal to)
+{
+    Q_Q(QQuickDelayButton);
+    if (!transition) {
+        q->setProgress(to);
+        finishTransition();
+        return;
+    }
+
+    if (!transitionManager)
+        transitionManager.reset(new QQuickDelayTransitionManager(q));
+
+    transitionManager->transition(transition, to);
+}
+
+void QQuickDelayButtonPrivate::finishTransition()
+{
+    Q_Q(QQuickDelayButton);
+    if (qFuzzyCompare(progress, 1.0))
+        emit q->activated();
+}
+
+void QQuickDelayButtonPrivate::cancelTransition()
+{
+    if (transitionManager)
+        transitionManager->cancel();
+}
+
+QQuickDelayButton::QQuickDelayButton(QQuickItem *parent) :
+    QQuickAbstractButton(*(new QQuickDelayButtonPrivate), parent)
+{
+    setCheckable(true);
+}
+
+/*!
+    \qmlproperty int QtQuick.Controls::DelayButton::delay
+
+    This property holds the time it takes (in milliseconds) for \l progress
+    to reach \c 1.0 and emit \l activated().
+
+    The default value is \c 3000 ms.
+*/
+int QQuickDelayButton::delay() const
+{
+    Q_D(const QQuickDelayButton);
+    return d->delay;
+}
+
+void QQuickDelayButton::setDelay(int delay)
+{
+    Q_D(QQuickDelayButton);
+    if (d->delay == delay)
+        return;
+
+    d->delay = delay;
+    emit delayChanged();
+}
+
+/*!
+    \qmlproperty real QtQuick.Controls::DelayButton::progress
+    \readonly
+
+    This property holds the current progress as displayed by the progress
+    indicator, in the range \c 0.0 - \c 1.0.
+*/
+qreal QQuickDelayButton::progress() const
+{
+    Q_D(const QQuickDelayButton);
+    return d->progress;
+}
+
+void QQuickDelayButton::setProgress(qreal progress)
+{
+    Q_D(QQuickDelayButton);
+    if (qFuzzyCompare(d->progress, progress))
+        return;
+
+    d->progress = progress;
+    emit progressChanged();
+}
+
+/*!
+    \qmlproperty Transition QtQuick.Controls::DelayButton::transition
+
+    This property holds the transition that is applied on the \l progress
+    property when the button is pressed or released.
+*/
+QQuickTransition *QQuickDelayButton::transition() const
+{
+    Q_D(const QQuickDelayButton);
+    return d->transition;
+}
+
+void QQuickDelayButton::setTransition(QQuickTransition *transition)
+{
+    Q_D(QQuickDelayButton);
+    if (d->transition == transition)
+        return;
+
+    d->transition = transition;
+    emit transitionChanged();
+}
+
+void QQuickDelayButton::buttonChange(ButtonChange change)
+{
+    Q_D(QQuickDelayButton);
+    switch (change) {
+    case ButtonCheckedChange:
+        d->cancelTransition();
+        setProgress(d->checked ? 1.0 : 0.0);
+        break;
+    case ButtonPressedChanged:
+        if (!d->checked)
+            d->beginTransition(d->pressed ? 1.0 : 0.0);
+        break;
+    default:
+        QQuickAbstractButton::buttonChange(change);
+        break;
+    }
+}
+
+void QQuickDelayButton::nextCheckState()
+{
+    Q_D(QQuickDelayButton);
+    setChecked(!d->checked && qFuzzyCompare(d->progress, 1.0));
+}
+
+QFont QQuickDelayButton::defaultFont() const
+{
+    return QQuickControlPrivate::themeFont(QPlatformTheme::PushButtonFont);
+}
+
+QT_END_NAMESPACE
diff --git a/src/quicktemplates2/qquickdelaybutton_p.h b/src/quicktemplates2/qquickdelaybutton_p.h
new file mode 100644
index 00000000..5ac0885d
--- /dev/null
+++ b/src/quicktemplates2/qquickdelaybutton_p.h
@@ -0,0 +1,98 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKDELAYBUTTON_P_H
+#define QQUICKDELAYBUTTON_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtQuickTemplates2/private/qquickabstractbutton_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickTransition;
+class QQuickDelayButtonPrivate;
+
+class Q_QUICKTEMPLATES2_PRIVATE_EXPORT QQuickDelayButton : public QQuickAbstractButton
+{
+    Q_OBJECT
+    Q_PROPERTY(int delay READ delay WRITE setDelay NOTIFY delayChanged FINAL)
+    Q_PROPERTY(qreal progress READ progress WRITE setProgress NOTIFY progressChanged FINAL)
+    Q_PROPERTY(QQuickTransition *transition READ transition WRITE setTransition NOTIFY transitionChanged FINAL)
+
+public:
+    explicit QQuickDelayButton(QQuickItem *parent = nullptr);
+
+    int delay() const;
+    void setDelay(int delay);
+
+    qreal progress() const;
+    void setProgress(qreal progress);
+
+    QQuickTransition *transition() const;
+    void setTransition(QQuickTransition *transition);
+
+Q_SIGNALS:
+    void activated();
+    void delayChanged();
+    void progressChanged();
+    void transitionChanged();
+
+protected:
+    void buttonChange(ButtonChange change) override;
+    void nextCheckState() override;
+
+    QFont defaultFont() const override;
+
+private:
+    Q_DISABLE_COPY(QQuickDelayButton)
+    Q_DECLARE_PRIVATE(QQuickDelayButton)
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QQuickDelayButton)
+
+#endif // QQUICKDELAYBUTTON_P_H
diff --git a/src/quicktemplates2/quicktemplates2.pri b/src/quicktemplates2/quicktemplates2.pri
index fd92e9d1..e8f02d62 100644
--- a/src/quicktemplates2/quicktemplates2.pri
+++ b/src/quicktemplates2/quicktemplates2.pri
@@ -15,6 +15,7 @@ HEADERS += \
     $$PWD/qquickcontainer_p_p.h \
     $$PWD/qquickcontrol_p.h \
     $$PWD/qquickcontrol_p_p.h \
+    $$PWD/qquickdelaybutton_p.h \
     $$PWD/qquickdial_p.h \
     $$PWD/qquickdialog_p.h \
     $$PWD/qquickdialog_p_p.h \
@@ -90,6 +91,7 @@ SOURCES += \
     $$PWD/qquickcombobox.cpp \
     $$PWD/qquickcontainer.cpp \
     $$PWD/qquickcontrol.cpp \
+    $$PWD/qquickdelaybutton.cpp \
     $$PWD/qquickdial.cpp \
     $$PWD/qquickdialog.cpp \
     $$PWD/qquickdialogbuttonbox.cpp \