/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** 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 Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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****************************************************************************/

import QtQuick 1.0

Rectangle {
    id: rangeMover


    property color rangeColor:"#444a64b8"
    property color borderColor:"#cc4a64b8"
    property color dragMarkerColor: "#4a64b8"
    width: 20
    height: 50

    color: rangeColor

    property bool dragStarted: false
    onXChanged: {
        if (dragStarted) canvas.updateRange()
    }

    MouseArea {
        anchors.fill: parent
        drag.target: rangeMover
        drag.axis: "XAxis"
        drag.minimumX: 0
        drag.maximumX: canvas.width - rangeMover.width
        onPressed: {
            parent.dragStarted = true;
        }
        onReleased: {
            parent.dragStarted = false;
        }
    }

    Rectangle {
        id: leftRange

        // used for dragging the borders
        property real initialX: 0
        property real initialWidth: 0

        x: 0
        height: parent.height
        width: 1
        color: borderColor

        Rectangle {
            id: leftBorderHandle
            height: parent.height
            x: -width
            width: 7
            color: "#869cd1"
            visible: false
            Image {
                source: "range_handle.png"
                x: 2
                width: 4
                height: 9
                fillMode: Image.Tile
                y: rangeMover.height / 2 - 4
            }
        }

        states: State {
            name: "highlighted"
            PropertyChanges {
                target: leftBorderHandle
                visible: true
            }
        }

        onXChanged: {
            if (x !== 0) {
                rangeMover.width = initialWidth - x;
                rangeMover.x = initialX + x;
                x = 0;
                canvas.updateRange();
            }
        }

        MouseArea {
            x: -10
            width: 13
            y: 0
            height: parent.height

            drag.target: leftRange
            drag.axis: "XAxis"
            drag.minimumX: -parent.initialX
            drag.maximumX: parent.initialWidth - 2

            hoverEnabled: true

            onEntered: {
                parent.state = "highlighted";
            }
            onExited: {
                if (!pressed) parent.state = "";
            }
            onReleased: {
                if (!containsMouse) parent.state = "";
            }
            onPressed: {
                parent.initialX = rangeMover.x;
                parent.initialWidth = rangeMover.width;
            }
        }
    }

    Rectangle {
        id: rightRange

        x: rangeMover.width
        height: parent.height
        width: 1
        color: borderColor

        Rectangle {
            id: rightBorderHandle
            height: parent.height
            x: 1
            width: 7
            color: "#869cd1"
            visible: false
            Image {
                source: "range_handle.png"
                x: 2
                width: 4
                height: 9
                fillMode: Image.Tile
                y: rangeMover.height / 2 - 4
            }
        }

        states: State {
            name: "highlighted"
            PropertyChanges {
                target: rightBorderHandle
                visible: true
            }
        }

        onXChanged: {
            if (x!=rangeMover.width) {
                rangeMover.width = x;
                canvas.updateRange();
            }
        }

        MouseArea {
            x: -3
            width: 13
            y: 0
            height: parent.height

            drag.target: rightRange
            drag.axis: "XAxis"
            drag.minimumX: 1
            drag.maximumX: canvas.width - rangeMover.x

            hoverEnabled: true

            onEntered: {
                parent.state = "highlighted";
            }
            onExited: {
                if (!pressed) parent.state = "";
            }
            onReleased: {
                if (!containsMouse) parent.state = "";
            }
        }
    }

}