nheko/resources/qml/delegates/ImageMessage.qml

// SPDX-FileCopyrightText: 2021 Nheko Contributors
//
// SPDX-License-Identifier: GPL-3.0-or-later

import QtQuick 2.12
import im.nheko 1.0

Item {
    required property int type
    required property int originalWidth
    required property double proportionalHeight
    required property string url
    required property string blurhash
    required property string body
    required property string filename
    required property bool isReply
    property double tempWidth: Math.min(parent ? parent.width : undefined, originalWidth < 1 ? 200 : originalWidth)
    property double tempHeight: tempWidth * proportionalHeight
    property double divisor: isReply ? 5 : 3
    property bool tooHigh: tempHeight > timelineView.height / divisor

    height: Math.round(tooHigh ? timelineView.height / divisor : tempHeight)
    width: Math.round(tooHigh ? (timelineView.height / divisor) / proportionalHeight : tempWidth)

    Image {
        id: blurhash_

        anchors.fill: parent
        visible: img.status != Image.Ready
        source: blurhash ? ("image://blurhash/" + blurhash) : ("image://colorimage/:/icons/icons/ui/do-not-disturb-rounded-sign@2x.png?" + Nheko.colors.buttonText)
        asynchronous: true
        fillMode: Image.PreserveAspectFit
        sourceSize.width: parent.width
        sourceSize.height: parent.height
    }

    Image {
        id: img

        anchors.fill: parent
        source: url.replace("mxc://", "image://MxcImage/")
        asynchronous: true
        fillMode: Image.PreserveAspectFit
        smooth: true
        mipmap: true

        TapHandler {
            enabled: type == MtxEvent.ImageMessage && img.status == Image.Ready
            onSingleTapped: {
                TimelineManager.openImageOverlay(url, room.data.eventId);
                eventPoint.accepted = true;
            }
            gesturePolicy: TapHandler.ReleaseWithinBounds
        }

        HoverHandler {
            id: mouseArea
        }

        Item {
            id: overlay

            anchors.fill: parent
            visible: mouseArea.hovered

            Rectangle {
                id: container

                width: parent.width
                implicitHeight: imgcaption.implicitHeight
                anchors.bottom: overlay.bottom
                color: Nheko.colors.window
                opacity: 0.75
            }

            Text {
                id: imgcaption

                anchors.fill: container
                elide: Text.ElideMiddle
                horizontalAlignment: Text.AlignHCenter
                verticalAlignment: Text.AlignVCenter
                // See this MSC: https://github.com/matrix-org/matrix-doc/pull/2530
                text: filename ? filename : body
                color: Nheko.colors.text
            }

        }

    }

}