element-web/res/css/views/rooms/_EventTile.scss

/*
Copyright 2015, 2016 OpenMarket Ltd
Copyright 2020-2021 The Matrix.org Foundation C.I.C.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

$left-gutter: 64px;
$threadInfoLineHeight: calc(2 * $font-12px); // See: _commons.scss

.mx_EventTile {
    flex-shrink: 0;

    .mx_EventTile_receiptSent,
    .mx_EventTile_receiptSending {
        position: relative;
        display: inline-block;
        width: 16px;
        height: 16px;

        &::before {
            background-color: $tertiary-content;
            mask-repeat: no-repeat;
            mask-position: center;
            mask-size: 16px;
            width: 16px;
            height: 16px;
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
        }
    }

    .mx_EventTile_receiptSent::before {
        mask-image: url('$(res)/img/element-icons/circle-sent.svg');
    }

    .mx_EventTile_receiptSending::before {
        mask-image: url('$(res)/img/element-icons/circle-sending.svg');
    }

    .mx_EventTile_content {
        &.mx_EditMessageComposer {
            // Make sure the formatting bar is visible
            overflow: visible;
        }
    }

    .mx_MImageBody {
        .mx_MImageBody_thumbnail_container {
            display: flex;
            align-items: center; // on every layout
        }
    }

    &[data-layout=group] {
        .mx_EventTile_line {
            line-height: var(--GroupLayout-EventTile-line-height);
        }
    }
}

.mx_EventTile:not([data-layout=bubble]) {
    max-width: 100%;
    clear: both;
    padding-top: 18px;
    font-size: $font-14px;
    position: relative;

    &[data-shape=ThreadsList][data-notification]::before {
        content: "";
        position: absolute;
        width: 10px;
        height: 10px;
        border-radius: 50%;
        right: -25px; // center it in the gutter (16px margin + 4px padding + half 10px width)
        top: 4px;
        left: auto;
    }

    &[data-shape=ThreadsList][data-notification=total]::before {
        background-color: $room-icon-unread-color;
    }

    &[data-shape=ThreadsList][data-notification=highlight]::before {
        background-color: $alert;
    }

    .mx_ThreadSummary,
    .mx_ThreadSummaryIcon {
        margin-left: 64px;
    }

    .mx_EventTile_avatar {
        top: 14px;
        left: 8px;
        cursor: pointer;
        user-select: none;
    }

    &.mx_EventTile_info {
        padding-top: 0;

        .mx_EventTile_avatar,
        .mx_EventTile_e2eIcon {
            margin: 3px 0 2px; // Align with mx_EventTile_line
        }

        .mx_EventTile_e2eIcon {
            top: 0;
        }

        .mx_EventTile_avatar {
            top: initial;
            inset-inline-start: $left-gutter;
            height: 14px;
        }

        .mx_EventTile_line {
            padding: 3px 0 2px; // Align with mx_EventTile_avatar and mx_EventTile_e2eIcon

            .mx_MessageTimestamp {
                top: 0;
            }
        }
    }

    &.mx_EventTile_continuation {
        padding-top: 0px !important;
    }

    .mx_DisambiguatedProfile {
        color: $primary-content;
        font-size: $font-14px;
        display: inline-block;
        padding-bottom: 0px;
        padding-top: 0px;
        margin: 0px;
        max-width: calc(100% - $left-gutter);
    }

    &.mx_EventTile_isEditing .mx_MessageTimestamp {
        visibility: hidden;
    }

    .mx_MessageTimestamp {
        display: block;
        white-space: nowrap;
        left: 0px;
        text-align: center;
        user-select: none;
    }

    &.mx_EventTile_continuation .mx_EventTile_line {
        clear: both;
    }

    .mx_EventTile_line,
    .mx_EventTile_reply {
        position: relative;
        padding-left: $left-gutter;
        border-radius: 8px;
    }

    .mx_EventTile_reply {
        margin-right: 10px;
    }

    /* this is used for the tile for the event which is selected via the URL.
     * TODO: ultimately we probably want some transition on here.
     */
    &.mx_EventTile_isEditing > .mx_EventTile_line,
    &.mx_EventTile_selected > .mx_EventTile_line {
        box-shadow: inset calc(50px + $selected-message-border-width) 0 0 -50px $accent;
        background-color: $event-selected-color;
    }

    &.mx_EventTile_highlight,
    &.mx_EventTile_highlight .markdown-body {
        color: $alert;

        .mx_EventTile_line {
            background-color: $event-highlight-bg-color;
        }
    }

    &.mx_EventTile_selected.mx_EventTile_info .mx_EventTile_line {
        padding-left: calc($left-gutter + 18px);
    }

    &.mx_EventTile:hover .mx_EventTile_line,
    &.mx_EventTile.mx_EventTile_actionBarFocused .mx_EventTile_line,
    &.mx_EventTile.focus-visible:focus-within .mx_EventTile_line {
        background-color: $event-selected-color;
    }

    .mx_EventTile_searchHighlight {
        background-color: $accent;
        color: $accent-fg-color;
        border-radius: 5px;
        padding-left: 2px;
        padding-right: 2px;
        cursor: pointer;
    }

    .mx_EventTile_searchHighlight a {
        background-color: $accent;
        color: $accent-fg-color;
    }

    &.mx_EventTile_contextual {
        opacity: 0.4;
    }

    .mx_EventTile_msgOption {
        float: right;
        text-align: right;
        position: relative;
        width: 90px;

        /* Hack to stop the height of this pushing the messages apart.
           Replaces margin-top: -6px. This interacts better with a read
           marker being in between. Content overflows. */
        height: 1px;

        margin-right: 10px;
    }

    .mx_EventTile_msgOption a {
        text-decoration: none;
    }

    /* De-zalgoing */
    .mx_EventTile_body {
        overflow-y: hidden;
    }

    &:hover.mx_EventTile_verified .mx_EventTile_line {
        box-shadow: inset calc(50px + $selected-message-border-width) 0 0 -50px $e2e-verified-color;
    }

    &:hover.mx_EventTile_unverified .mx_EventTile_line {
        box-shadow: inset calc(50px + $selected-message-border-width) 0 0 -50px $e2e-unverified-color;
    }

    &:hover.mx_EventTile_unknown .mx_EventTile_line {
        box-shadow: inset calc(50px + $selected-message-border-width) 0 0 -50px $e2e-unknown-color;
    }

    &:hover.mx_EventTile_verified.mx_EventTile_info .mx_EventTile_line,
    &:hover.mx_EventTile_unverified.mx_EventTile_info .mx_EventTile_line,
    &:hover.mx_EventTile_unknown.mx_EventTile_info .mx_EventTile_line {
        padding-left: calc($left-gutter + 18px + $selected-message-border-width);
    }

    /* End to end encryption stuff */
    &:hover .mx_EventTile_e2eIcon {
        opacity: 1;
    }

    .mx_MImageBody {
        margin-right: 34px;

        .mx_MImageBody_thumbnail_container {
            justify-content: flex-start;
            min-height: $font-44px;
            min-width: $font-44px;
        }
    }

    .mx_EventTile_e2eIcon {
        position: absolute;
        top: 6px;
        left: 44px;
        bottom: 0;
        right: 0;
    }

    .mx_ReactionsRow {
        margin: 0;
        padding: 4px 64px;
    }
}

.mx_GenericEventListSummary:not([data-layout=bubble]) {
    .mx_EventTile_line {
        padding-left: $left-gutter;

        .mx_RedactedBody {
            line-height: 1; // remove spacing between lines
        }
    }
}

.mx_EventTile:not([data-layout=bubble]).mx_EventTile_info .mx_EventTile_line,
.mx_GenericEventListSummary:not([data-layout=bubble]) > .mx_GenericEventListSummary_unstyledList > .mx_EventTile_info .mx_EventTile_avatar ~ .mx_EventTile_line {
    padding-left: calc($left-gutter + 20px); // override padding-left $left-gutter
}

.mx_EventTile_content {
    /*
    all the overflow-y: hidden; are to trap Zalgos -
    but they introduce an implicit overflow-x: auto.
    so make that explicitly hidden too to avoid random
    horizontal scrollbars occasionally appearing, like in
    https://github.com/vector-im/vector-web/issues/1154
    */
    overflow-y: hidden;
    overflow-x: hidden;
    margin-right: 34px;

    .mx_EventTile_edited,
    .mx_EventTile_pendingModeration {
        user-select: none;
        font-size: $font-12px;
        color: $roomtopic-color;
        display: inline-block;
        margin-left: 9px;
    }

    .mx_EventTile_edited {
        cursor: pointer;
    }

    .markdown-body {
        font-family: inherit !important;
        white-space: normal !important;
        line-height: inherit !important;
        color: inherit; // inherit the colour from the dark or light theme by default (but not for code blocks)
        font-size: $font-14px;

        pre,
        code {
            font-family: $monospace-font-family !important;
            background-color: $codeblock-background-color;
        }

        code {
            white-space: pre-wrap; // don't collapse spaces in inline code blocks
        }

        pre {
            // have to use overlay rather than auto otherwise Linux and Windows
            // Chrome gets very confused about vertical spacing:
            // https://github.com/vector-im/vector-web/issues/754
            overflow-x: overlay;
            overflow-y: visible;

            &::-webkit-scrollbar-corner {
                background: transparent;
            }

            code {
                white-space: pre; // we want code blocks to be scrollable and not wrap

                > * {
                    display: inline;
                }
            }
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: inherit !important;
            color: inherit;
        }

        /* Make h1 and h2 the same size as h3. */
        h1,
        h2 {
            font-size: 1.5em;
            border-bottom: none !important; // override GFM
        }

        a {
            color: $accent-alt;
        }

        blockquote {
            border-left: 2px solid $blockquote-bar-color;
            border-radius: 2px;
            padding: 0 10px;
        }

        /*
        // actually, removing the Italic TTF provides
        // better results seemingly

        // compensate for Nunito italics being terrible
        // https://github.com/google/fonts/issues/1726
        em {
            transform: skewX(-14deg);
            display: inline-block;
        }
        */
    }
}

/* Spoiler stuff */
.mx_EventTile_spoiler {
    cursor: pointer;

    .mx_EventTile_spoiler_reason {
        color: $event-timestamp-color;
        font-size: $font-11px;
    }

    .mx_EventTile_spoiler_content {
        filter: blur(5px) saturate(0.1) sepia(1);
        transition-duration: 0.5s;
    }

    &.visible > .mx_EventTile_spoiler_content {
        filter: none;
    }
}

.mx_RoomView_timeline_rr_enabled {
    .mx_EventTile[data-layout=group] {

        .mx_ThreadSummary,
        .mx_ThreadSummaryIcon,
        .mx_EventTile_line {
            /* ideally should be 100px, but 95px gives us a max thumbnail size of 800x600, which is nice */
            margin-right: 110px;
            min-height: $font-14px;
        }

        .mx_ThreadSummary {
            max-width: min(calc(100% - $left-gutter - 110px), 600px); // leave space on both left & right gutters
        }
    }

    // on ELS we need the margin to allow interaction with the expand/collapse button which is normally in the RR gutter
}

.mx_EventTile_bubbleContainer {
    display: grid;
    grid-template-columns: 1fr 100px;

    .mx_EventTile_line {
        margin-right: 0;
        grid-column: 1 / 3;
        // override default padding of mx_EventTile_line so that we can be centered
        padding: 0 !important;
    }

    .mx_EventTile_msgOption {
        grid-column: 2;
    }

    &:hover {
        .mx_EventTile_line {
            // To avoid bubble events being highlighted
            background-color: inherit !important;
        }
    }
}

.mx_EventTile_bigEmoji {
    font-size: 48px;
    line-height: 57px;

    .mx_Emoji {
        font-size: inherit !important;
    }
}

.mx_EventTile_e2eIcon {
    position: relative;
    width: 14px;
    height: 14px;
    display: block;
    opacity: 0.2;
    background-repeat: no-repeat;
    background-size: contain;

    &::before,
    &::after {
        content: "";
        display: block;
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        mask-repeat: no-repeat;
        mask-position: center;
        mask-size: contain;
    }

    &::before {
        mask-size: 80%;
    }

    &.mx_EventTile_e2eIcon_warning,
    &.mx_EventTile_e2eIcon_normal {
        opacity: 1;
    }

    &.mx_EventTile_e2eIcon_warning::after {
        mask-image: url('$(res)/img/e2e/warning.svg');
        background-color: $alert;
    }

    &.mx_EventTile_e2eIcon_normal::after {
        mask-image: url('$(res)/img/e2e/normal.svg');
        background-color: $header-panel-text-primary-color;
    }
}

/* Various markdown overrides */

.mx_EventTile_body {
    a:hover {
        text-decoration: underline;
    }

    pre {
        border: 1px solid transparent;
    }

    // selector wrongly applies to pill avatars but those have explicit width/height passed at a higher specificity
    &.markdown-body img {
        object-fit: contain;
        object-position: left top;
    }
}

.mx_EventTile_clamp {
    .mx_EventTile_body {
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
    }
}

.mx_EventTile_lineNumbers {
    float: left;
    margin: 0 0.5em 0 -1.5em;
    color: gray;

    & span {
        text-align: right;
        display: block;
        padding-left: 1em;
    }
}

.mx_EventTile:hover .mx_EventTile_body pre,
.mx_EventTile.focus-visible:focus-within .mx_EventTile_body pre {
    border: 1px solid $tertiary-content;
}

.mx_EventTile_button {
    display: inline-block;
    cursor: pointer;
}

.mx_EventTile_copyButton {
    mask-image: url($copy-button-url);
}

.mx_EventTile_collapseButton,
.mx_EventTile_expandButton {
    mask-position: center;
    mask-repeat: no-repeat;
}

.mx_EventTile_collapseButton {
    mask-image: url("$(res)/img/element-icons/minimise-collapse.svg");
}

.mx_EventTile_expandButton {
    mask-image: url("$(res)/img/element-icons/maximise-expand.svg");
}

.mx_EventTile_body .mx_EventTile_pre_container {
    // For correct positioning of _copyButton (See TextualBody)
    position: relative;

    &:focus-within,
    &:hover {
        .mx_EventTile_button {
            visibility: visible;
        }
    }

    .mx_EventTile_collapsedCodeBlock {
        max-height: 30vh;
    }

    // Inserted adjacent to <pre> blocks, (See TextualBody)
    .mx_EventTile_button {
        position: absolute;
        top: 8px;
        right: 8px;
        width: 19px;
        height: 19px;
        visibility: hidden;
        background-color: $message-action-bar-fg-color;

        &.mx_EventTile_buttonBottom {
            top: 33px;
        }

        &.mx_EventTile_collapseButton,
        &.mx_EventTile_expandButton {
            mask-size: 75%;
        }
    }
}

/* end of overrides */

.mx_EventTile_keyRequestInfo {
    font-size: $font-12px;

    .mx_EventTile_keyRequestInfo_text {
        opacity: 0.5;

        .mx_AccessibleButton {
            @mixin ButtonResetDefault;
            color: $primary-content;
            text-decoration: underline;
            cursor: pointer;
        }
    }
}

.mx_EventTile_keyRequestInfo_tooltip_contents p {
    text-align: auto;
    margin-left: 3px;
    margin-right: 3px;

    &:first-child {
        margin-top: 0px;
    }

    &:last-child {
        margin-bottom: 0px;
    }
}

.mx_EventTile_tileError {
    color: red;
    text-align: center;

    // Remove some of the default tile padding so that the error is centered
    margin-right: 0;

    .mx_EventTile_line {
        padding-left: 0;
        margin-right: 0;
    }

    .mx_EventTile_line span {
        padding: 4px 8px;
    }

    a {
        margin-left: 1em;
    }
}

.mx_EventTile:hover .mx_MessageActionBar,
.mx_EventTile.mx_EventTile_actionBarFocused .mx_MessageActionBar,
[data-whatinput='keyboard'] .mx_EventTile:focus-within .mx_MessageActionBar,
.mx_EventTile.focus-visible:focus-within .mx_MessageActionBar {
    visibility: visible;
}

// Inverse of the above to *disable* the animation on any indicators. This approach
// is less pretty, but is easier to target because otherwise we need to define the
// animation for when it's shown which means duplicating the style definition in
// multiple places.
.mx_EventTile:not(:hover):not(.mx_EventTile_actionBarFocused):not([data-whatinput='keyboard'] :focus-within):not(.focus-visible:focus-within) {
    .mx_MessageActionBar .mx_Indicator {
        animation: none;
    }
}

@media only screen and (max-width: 480px) {

    .mx_EventTile_line,
    .mx_EventTile_reply {
        padding-left: 0;
        margin-right: 0;
    }

    .mx_EventTile_content {
        margin-top: 10px;
        margin-right: 0;
    }
}

.mx_ThreadPanel_replies::before,
.mx_ThreadSummaryIcon::before,
.mx_ThreadSummary::before {
    @mixin ThreadInfoIcon;
    background-color: $secondary-content !important;
}

.mx_ThreadSummaryIcon {
    display: inline-block;
    font-size: $font-12px;
    color: $secondary-content !important;
    margin-top: 8px;
    margin-bottom: 8px;

    &::before {
        vertical-align: middle;
        margin-right: 8px;
        margin-top: -2px;
    }
}

.mx_MessagePanel_narrow .mx_ThreadSummary {
    min-width: initial;
    max-width: 100%; // prevent overflow
    width: initial;
}

.mx_EventTile[data-shape=ThreadsList] {
    --topOffset: $spacing-12;
    --leftOffset: 48px;
    $borderRadius: 8px;
    $padding: $spacing-8;
    $hrHeight: 1px;

    margin: calc(var(--topOffset) + $hrHeight) 0 var(--topOffset); // include the height of horizontal line
    padding: $padding $spacing-24 $padding $padding;
    border-radius: $borderRadius;

    display: flex;
    flex-flow: wrap;
    align-items: center;

    &:hover,
    // Override .mx_EventTile:not([data-layout=bubble]).mx_EventTile:hover .mx_EventTile_line
    &:not([data-layout=bubble]):hover .mx_EventTile_line {
        background-color: $system;
    }

    &:not([data-layout=bubble]):hover .mx_EventTile_line {
        box-shadow: none; // don't show the verification left stroke in the thread list
    }

    &::after {
        content: "";
        position: absolute;
        left: calc(var(--leftOffset) + $padding);
        right: $spacing-24; // 24px: 32px - 8px (right padding)
        height: $hrHeight;
        bottom: calc(-1 * var(--topOffset) - $hrHeight); // exclude the height of horizontal line
        background-color: $quinary-content;
        pointer-events: none; // disable the message action bar on hover
    }

    &::before {
        content: "";
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        /* enough to cover all sibling elements */
        z-index: 10;
    }

    &:last-child {
        &::after {
            content: unset;
        }

        margin-bottom: 0;
    }

    &:first-child {
        margin-top: 0;
    }

    .mx_EventTile_avatar {
        top: $padding;
        left: $padding;
    }

    .mx_DisambiguatedProfile {
        margin-right: 12px;
        display: inline-flex;
        flex: 1;
    }

    .mx_DisambiguatedProfile_displayName,
    .mx_DisambiguatedProfile_mxid {
        display: block;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .mx_DisambiguatedProfile_displayName {
        flex: none;
        max-width: 100%;
    }

    .mx_DisambiguatedProfile_mxid {
        flex: 1;
    }

    .mx_EventTile_line {
        width: 100%;
        box-sizing: border-box;
        border-radius: $borderRadius !important; // override 4px
    }

    .mx_DisambiguatedProfile,
    .mx_EventTile_line {
        padding-inline-start: var(--leftOffset);
    }

    .mx_MessageTimestamp {
        max-width: 80px;
        width: auto;
    }
}

.mx_ThreadView {
    --ThreadView_group_spacing-start: 56px; // 56px: 64px - 8px (padding)
    --ThreadView_group_spacing-end: 8px; // same as padding

    display: flex;
    flex-direction: column;
    max-height: 100%;

    .mx_ThreadView_List {
        flex: 1;
        overflow: scroll;
    }

    .mx_EventTile_roomName {
        display: none;
    }

    .mx_EventTile {
        display: flex;
        flex-direction: column;

        .mx_EventTile_line {
            padding-top: var(--BaseCard_EventTile_line-padding-block);
            padding-bottom: var(--BaseCard_EventTile_line-padding-block);
        }

        .mx_EventTile_line,
        .mx_ReactionsRow {
            padding-inline-start: 0; // Cancel inherited padding value for event message and reactions row
        }

        .mx_ReactionsRow {
            padding-inline-end: 0;
        }

        .mx_MessageTimestamp {
            font-size: $font-10px;
        }

        &:not([data-layout=bubble]) {
            padding-top: $spacing-16;

            .mx_EventTile_line {
                padding-top: var(--BaseCard_EventTile_line-padding-block);
                padding-bottom: var(--BaseCard_EventTile_line-padding-block);

                .mx_EventTile_content {
                    &.mx_EditMessageComposer {
                        padding-inline-start: 0; // align start of first letter with that of the event body
                    }
                }
            }
        }

        &[data-layout=bubble] {
            margin-inline-start: var(--BaseCard_EventTile-spacing-horizontal);
            margin-inline-end: var(--BaseCard_EventTile-spacing-horizontal);

            .mx_EventTile_line.mx_EventTile_mediaLine {
                padding-block: 0;
                padding-inline-start: 0;
                max-width: var(--EventBubbleTile_line-max-width);
            }

            &[data-self=true] {
                align-items: flex-end;

                .mx_EventTile_line.mx_EventTile_mediaLine {
                    margin: 0 var(--EventBubbleTile_line-margin-inline-end) 0 0; // align with normal messages
                }
            }
        }
    }

    .mx_EventTile[data-layout=group] {
        width: 100%;

        .mx_EventTile_content,
        .mx_HiddenBody,
        .mx_RedactedBody,
        .mx_UnknownBody,
        .mx_MPollBody,
        .mx_MLocationBody,
        .mx_ReplyChain_wrapper,
        .mx_ReactionsRow {
            margin-inline-start: var(--ThreadView_group_spacing-start);
            margin-inline-end: var(--ThreadView_group_spacing-end);

            .mx_EventTile_content,
            .mx_HiddenBody,
            .mx_RedactedBody,
            .mx_MImageBody {
                margin: 0;
            }
        }

        .mx_EventTile_mediaLine {
            // such as MImageBody
            > div,
            > span {
                margin-inline-start: var(--ThreadView_group_spacing-start);
                margin-inline-end: var(--ThreadView_group_spacing-end);
            }

            // such as MAudioBody and MFileBody
            > span {
                display: block; // Apply the margin declarations to span element
            }
        }

        .mx_ReplyChain_wrapper {
            .mx_MLocationBody {
                margin-inline-start: 0;
                margin-inline-end: 0;
            }
        }

        .mx_MessageTimestamp {
            top: 2px; // Align with mx_EventTile_content
        }

        .mx_EventTile_senderDetails {
            display: flex;
            align-items: center;
            gap: $spacing-16; // gap between the avatar and the sender ID
            padding-inline-start: $spacing-8;

            a {
                flex: 1;
                min-width: unset;
                max-width: 100%;
                display: flex;
                align-items: center;

                .mx_DisambiguatedProfile {
                    margin-left: 8px;
                    flex: 1;
                }
            }
        }
    }

    .mx_MessageComposer_sendMessage {
        margin-right: 0;
    }
}