/*
 *  SPDX-FileCopyrightText: 2019 Marco Martin <mart@kde.org>
 *
 *  SPDX-License-Identifier: LGPL-2.0-or-later
 */
import QtQuick
import org.kde.kirigami as Kirigami

/**
 * @brief This is the default background for Cards.
 *
 * It provides background feedback on hover and click events, border customizability, and the ability to change the radius of each individual corner.
 *
 * @inherit org::kde::kirigami::ShadowedRectangle
 */
Kirigami.ShadowedRectangle {
    id: root

//BEGIN properties
    /**
     * @brief This property sets whether there should be a background change on a click event.
     *
     * default: ``false``
     */
    property bool clickFeedback: false

    /**
     * @brief This property sets whether there should be a background change on a click event.
     *
     * default: ``false``
     */
    property bool hoverFeedback: false

    /**
     * @brief This property holds the card's normal background color.
     *
     * default: ``Kirigami.Theme.backgroundColor``
     */
    property color defaultColor: Kirigami.Theme.backgroundColor

    /**
     * @brief This property holds the color displayed when a click event is triggered.
     * @see DefaultCardBackground::clickFeedback
     */
    property color pressedColor: Kirigami.ColorUtils.tintWithAlpha(
                                     defaultColor,
                                     Kirigami.Theme.highlightColor, 0.3)

    /**
     * @brief This property holds the color displayed when a hover event is triggered.
     * @see DefaultCardBackground::hoverFeedback
     */
    property color hoverColor: Kirigami.ColorUtils.tintWithAlpha(
                                   defaultColor,
                                   Kirigami.Theme.highlightColor, 0.1)

    /**
     * @brief This property holds the border width which is displayed at the edge of DefaultCardBackground.
     *
     * default: ``1``
     */
    property int borderWidth: 1

    /**
     * @brief This property holds the border color which is displayed at the edge of DefaultCardBackground.
     */
    property color borderColor: Kirigami.ColorUtils.linearInterpolation(Kirigami.Theme.backgroundColor, Kirigami.Theme.textColor, Kirigami.Theme.frameContrast)

//END properties

    color: {
        if (root.parent.checked || (root.clickFeedback && (root.parent.down || root.parent.highlighted)))
            return root.pressedColor
        else if (root.hoverFeedback && root.parent.hovered)
            return root.hoverColor
        return root.defaultColor
    }

    radius: Kirigami.Units.cornerRadius

    border {
        width: root.borderWidth
        color: root.borderColor
    }
    shadow {
        size: Kirigami.Units.gridUnit
        color: Qt.rgba(0, 0, 0, 0.05)
        yOffset: 2
    }

    // basic drop shadow
    Rectangle {
        anchors.left: parent.left
        anchors.right: parent.right
        anchors.top: parent.top
        anchors.topMargin: Math.round(Kirigami.Units.smallSpacing / 4)

        radius: root.radius
        height: root.height
        color: Qt.darker(Qt.rgba(Kirigami.Theme.backgroundColor.r, Kirigami.Theme.backgroundColor.g, Kirigami.Theme.backgroundColor.b, 0.6), 1.1)
        visible: !root.clickFeedback || !root.parent.down

        z: -1
    }
}