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/****************************************************************************
**
** Copyright (C) 2017-2018 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Neptune 3 IVI UI.
**
** $QT_BEGIN_LICENSE:GPL-QTAS$
** Commercial License Usage
** Licensees holding valid commercial Qt Automotive Suite 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 https://www.qt.io/terms-conditions.
** For further information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
** SPDX-License-Identifier: GPL-3.0
**
****************************************************************************/

import QtQuick 2.6
import QtQuick.Controls 2.2
import QtQuick.Layouts 1.3

import com.pelagicore.styles.neptune 3.0
import controls 1.0
import utils 1.0
import animations 1.0

// NB: We can't use Popup from QtQuick.Controls as it doesn't support a rotated scene
Control {
    id: root

    width: NeptuneStyle.dp(800)
    focus: visible

    // X and Y potition of the popup when open.
    // By default you have it horizontally centered and vertically aligned to the bottom
    property real popupX: (root.parent.width - root.width) / 2
    property real popupY: root.parent.height - root.height - NeptuneStyle.dp(90)


    property bool headerBackgroundVisible: false
    property int headerBackgroundHeight: 0
    property Item originItem
    property real _openFromX
    property real _openFromY
    readonly property int minHeight: NeptuneStyle.dp(548)

    ScalableBorderImage {
        anchors.top: parent.top
        width: parent.width
        height: root.headerBackgroundHeight
        visible: root.headerBackgroundVisible
        source: Style.gfx("floating-panel-top-bg")
        border {
            left: 20
            top: 30
            right: 20
            bottom: 0
        }
    }
    background: ScalableBorderImage {
        anchors.fill: root
        source: Style.gfx("popup-background-9patch", NeptuneStyle.theme)
        anchors.leftMargin: NeptuneStyle.dp(-40)
        anchors.rightMargin: NeptuneStyle.dp(-40)
        anchors.topMargin: NeptuneStyle.dp(-28)
        anchors.bottomMargin: NeptuneStyle.dp(-52)
        border.left: 70
        border.right: 70
        border.top: 50
        border.bottom: 90

        // click eater
        MouseArea {
            anchors.fill: parent
            acceptedButtons: Qt.AllButtons
            onWheel: wheel.accepted = true;
        }
    }

    ToolButton {
        anchors.verticalCenter: parent.top
        anchors.horizontalCenter: parent.right
        width: bg.width
        height: bg.height
        onClicked: close()
        icon.name: "ic-close"
        background: Image {
            id: bg
            width: NeptuneStyle.dp(sourceSize.width)
            height: NeptuneStyle.dp(sourceSize.height)
            anchors.verticalCenter: parent.verticalCenter
            anchors.verticalCenterOffset: NeptuneStyle.dp(4)
            source: Style.gfx("popup-close-button-bg", NeptuneStyle.theme)
            fillMode: Image.PreserveAspectFit
        }
    }

    Keys.onEscapePressed: close()

    function updateOpenFromPosition() {
        var originPos = originItem.mapToItem(root.parent, originItem.width/2, originItem.height/2)
        _openFromX = originPos.x - (root.width / 2);
        _openFromY = originPos.y - root.height;
    }

    function open() {
        updateOpenFromPosition();
        state = "open";
    }

    function close() {
        updateOpenFromPosition();
        state = "closed";
    }

    Connections {
        target: parent ? parent : null
        onOverlayClicked: close()
    }

    state: "closed"
    states: [
        State {
            name: "open"
            PropertyChanges {
                target: root
                visible: true
                x: root.popupX
                y: root.popupY
            }
            PropertyChanges {
                target: root.parent
                showModalOverlay: true
            }
        },
        State {
            name: "closed"
            PropertyChanges {
                target: root
                x: root._openFromX
                y: root._openFromY
                visible: false
            }
            PropertyChanges {
                target: root.parent
                showModalOverlay: false
            }
        }
    ]

    transitions: [
        Transition {
            to: "open"
            SequentialAnimation {
                PropertyAction { target: root; property: "visible"; value: true }
                PropertyAction { target: root; property: "transformOrigin"; value: Popup.Bottom }
                ParallelAnimation {
                    DefaultNumberAnimation { target: root; property: "opacity"; from: 0.25; to: 1.0}
                    DefaultNumberAnimation { target: root; property: "scale"; from: 0.25; to: 1}
                    DefaultNumberAnimation { target: root; properties: "x,y" }
                }
                PropertyAction { target: root; property: "transformOrigin"; value: Popup.Center }
            }
        },
        Transition {
            from: "open"; to: "closed"
            SequentialAnimation {
                PropertyAction { target: root; property: "visible"; value: true }
                PropertyAction { target: root; property: "transformOrigin"; value: Popup.Bottom }
                ParallelAnimation {
                    DefaultNumberAnimation { target: root; property: "opacity"; to: 0.25 }
                    DefaultNumberAnimation { target: root; property: "scale"; to: 0.25 }
                    DefaultNumberAnimation { target: root; properties: "x,y" }
                }
                PropertyAction { target: root; property: "transformOrigin"; value: Popup.Center }
            }
        }
    ]
}