element-web-Github/res/css/views/messages/_MImageBody.pcss

/*
Copyright 2024 New Vector Ltd.
Copyright 2021 The Matrix.org Foundation C.I.C.
Copyright 2015, 2016 OpenMarket Ltd

SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
Please see LICENSE files in the repository root for full details.
*/

.mx_MImageBody_banner {
    position: absolute;
    bottom: $spacing-4;
    left: $spacing-4;
    padding: $spacing-4;
    border-radius: var(--MBody-border-radius);
    font-size: $font-15px;
    user-select: none; /* prevent banner text from being selected */
    pointer-events: none; /* let the cursor go through to the media underneath */

    /* Trying to match the width of the image is surprisingly difficult, so arbitrarily break it off early. */
    max-width: min(100%, 350px);

    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;

    /* Hardcoded colours because it's the same on all themes */
    background-color: rgba(0, 0, 0, 0.6);
    color: #ffffff;
}

.mx_MImageBody_placeholder {
    /* Position the placeholder on top of the thumbnail, so that the reveal animation can work */
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 100%;

    background-color: $background;

    .mx_Blurhash > canvas {
        animation: mx--anim-pulse 1.75s infinite cubic-bezier(0.4, 0, 0.6, 1);
    }
}

.mx_MImageBody_thumbnail_container {
    border-radius: var(--MBody-border-radius);

    /* Necessary for the border radius to apply correctly to the placeholder */
    overflow: hidden;
    contain: paint;
}

.mx_MImageBody_thumbnail {
    display: block;

    /* Force the image to be the full size of the container, even if the */
    /* pixel size is smaller. The problem here is that we don't know what */
    /* thumbnail size the HS is going to give us, but we have to commit to */
    /* a container size immediately and not change it when the image loads */
    /* or we'll get a scroll jump (or have to leave blank space). */
    /* This will obviously result in an upscaled image which will be a bit */
    /* blurry. The best fix would be for the HS to advertise what size thumbnails */
    /* it guarantees to produce. */
    height: 100%;
    width: 100%;
}

.mx_MImageBody_gifLabel {
    position: absolute;
    display: block;
    top: 0px;
    left: 14px;
    padding: 5px;
    border-radius: 5px;
    background: $imagebody-giflabel;
    border: 2px solid $imagebody-giflabel-border;
    color: $imagebody-giflabel-color;
    pointer-events: none;
}

.mx_HiddenImagePlaceholder {
    position: absolute;
    inset: 0;

    /* To center the text in the middle of the frame */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;

    cursor: pointer;
    background-color: $header-panel-bg-color;

    .mx_HiddenImagePlaceholder_button {
        color: $accent;

        span.mx_HiddenImagePlaceholder_eye {
            margin-right: 8px;

            background-color: $accent;
            mask-image: url("$(res)/img/element-icons/eye.svg");
            display: inline-block;
            width: 18px;
            height: 14px;
        }

        span:not(.mx_HiddenImagePlaceholder_eye) {
            vertical-align: text-bottom;
        }
    }
}

.mx_EventTile:hover .mx_HiddenImagePlaceholder {
    background-color: $background;
}