riot-web/res/css/structures/_SpacePanel.pcss

/*
Copyright 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.
*/

.mx_SpacePanel {
    --activeBackground-color: $panel-actions;
    --activeBorder-color: $primary-content;
    --activeBorder-transparent-gap: 1px;
    --gutterSize: 16px;
    --height-nested: 24px;
    --height-topLevel: 32px;

    background-color: $spacePanel-bg-color;
    flex: 0 0 auto;
    padding: 0;
    margin: 0;
    position: relative;
    /* Fix for the blurred avatar-background */
    z-index: 1;

    /* Create another flexbox so the Panel fills the container */
    display: flex;
    flex-direction: column;

    .mx_SpacePanel_toggleCollapse {
        position: absolute;
        width: 18px;
        height: 18px;
        border-radius: 50%;
        background-color: $tertiary-content;
        top: 19px; /* v-align with avatar */
        right: -8px;

        &::before {
            content: "";
            position: absolute;
            width: inherit;
            height: inherit;
            mask-position: center;
            mask-size: contain;
            mask-repeat: no-repeat;
            background-color: $background;
            mask-image: url("$(res)/img/feather-customised/chevron-down.svg");
            transform: rotate(270deg);
        }

        &:not(.expanded) {
            opacity: 0;

            &::before {
                mask-position: center 1px;
            }
        }

        &.expanded::before {
            transform: rotate(90deg);
        }
    }

    &:hover .mx_SpacePanel_toggleCollapse {
        opacity: 1;
    }

    ul {
        margin: 0;
        list-style: none;
        padding: 0;
    }

    .mx_SpaceButton_toggleCollapse {
        cursor: pointer;
    }

    .mx_SpaceItem_dragging {
        .mx_SpaceButton_toggleCollapse {
            visibility: hidden;
        }
    }

    .mx_SpaceItem {
        display: inline-flex;
        flex-flow: wrap;

        &.mx_SpaceItem_narrow {
            align-self: baseline;
        }
    }

    .mx_SpaceItem.collapsed {
        & > .mx_SpaceButton > .mx_SpaceButton_toggleCollapse {
            padding: 0 10px;
            margin: 0 -10px;
            transform: rotate(-90deg);
        }

        & > .mx_SpaceTreeLevel {
            display: none;
        }
    }

    .mx_SpaceItem_new {
        position: relative;
    }

    .mx_SpaceItem:not(.hasSubSpaces) > .mx_SpaceButton {
        margin-left: var(--gutterSize);
        min-width: 40px;
    }

    .mx_SpaceButton {
        border-radius: 8px;
        display: flex;
        align-items: center;
        padding: 4px 4px 4px 0;
        width: 100%;
        cursor: pointer;

        &.mx_SpaceButton_active {
            &:not(.mx_SpaceButton_narrow) .mx_SpaceButton_selectionWrapper {
                background-color: var(--activeBackground-color);
            }

            &.mx_SpaceButton_narrow .mx_SpaceButton_selectionWrapper {
                padding: var(--activeBorder-transparent-gap);
                border: 3px var(--activeBorder-color) solid;
            }
        }

        .mx_SpaceButton_selectionWrapper {
            position: relative;
            display: flex;
            flex: 1;
            align-items: center;
            border-radius: 12px;
            padding: 4px;
            width: calc(100% - 32px);
            min-width: 0;
        }

        .mx_SpaceButton_name {
            flex: 1;
            margin-left: 8px;
            white-space: nowrap;
            display: block;
            text-overflow: ellipsis;
            overflow: hidden;
            font: var(--cpd-font-body-md-regular);
        }

        .mx_SpaceButton_toggleCollapse {
            width: var(--gutterSize);
            padding: 10px 0;
            min-width: var(--gutterSize);
            height: 20px;
            mask-position: center;
            mask-size: 20px;
            mask-repeat: no-repeat;
            background-color: $tertiary-content;
            mask-image: url("$(res)/img/feather-customised/chevron-down.svg");
        }

        .mx_SpaceButton_icon {
            width: var(--height-topLevel);
            min-width: var(--height-topLevel);
            height: var(--height-topLevel);
            border-radius: 8px;
            position: relative;

            &::before {
                position: absolute;
                content: "";
                width: var(--height-topLevel);
                height: var(--height-topLevel);
                top: 0;
                left: 0;
                mask-position: center;
                mask-repeat: no-repeat;
                mask-size: 18px;
            }
        }

        &.mx_SpaceButton_home,
        &.mx_SpaceButton_favourites,
        &.mx_SpaceButton_people,
        &.mx_SpaceButton_orphans {
            .mx_SpaceButton_icon {
                background-color: $panel-actions;

                &::before {
                    background-color: $secondary-content;
                }
            }
        }

        &.mx_SpaceButton_home .mx_SpaceButton_icon::before {
            mask-image: url("$(res)/img/element-icons/home.svg");
        }

        &.mx_SpaceButton_favourites .mx_SpaceButton_icon::before {
            mask-image: url("$(res)/img/element-icons/roomlist/favorite.svg");
        }

        &.mx_SpaceButton_people .mx_SpaceButton_icon::before {
            mask-image: url("$(res)/img/element-icons/room/members.svg");
        }

        &.mx_SpaceButton_orphans .mx_SpaceButton_icon::before {
            mask-image: url("$(res)/img/element-icons/roomlist/hash-circle.svg");
        }

        &.mx_SpaceButton_new .mx_SpaceButton_icon {
            &::before {
                background-color: $primary-content;
                mask-image: url("$(res)/img/element-icons/plus.svg");
                transition: all 0.2s ease-in-out; /* TODO transition */
            }
        }

        &.mx_SpaceButton_newCancel .mx_SpaceButton_icon::before {
            transform: rotate(45deg);
        }

        .mx_SpaceButton_menuButton {
            width: 20px;
            min-width: 20px; /* yay flex */
            height: 20px;
            margin-top: auto;
            margin-bottom: auto;
            display: none;
            position: absolute;
            right: 4px;

            &::before {
                top: 3px;
                left: 2px;
                content: "";
                width: 16px;
                height: 16px;
                position: absolute;
                mask-position: center;
                mask-size: contain;
                mask-repeat: no-repeat;
                mask-image: url("$(res)/img/element-icons/context-menu.svg");
                background: $primary-content;
            }
        }
    }

    .mx_SpaceTreeLevel {
        display: flex;
        flex-direction: column;
        max-width: 250px;
        min-width: 0;
        flex-grow: 1;

        .mx_SpaceTreeLevel {
            // Indent subspaces
            padding-left: 16px;
        }
    }

    .mx_SpaceButton_avatarWrapper {
        position: relative;
        line-height: 0;
    }

    .mx_SpacePanel_badgeContainer {
        /* Create a flexbox to make aligning dot badges easier */
        display: flex;
        align-items: center;
        position: absolute;
        right: -3px;
        top: -3px;

        .mx_NotificationBadge {
            margin: 0 2px; /* centering */
            background-clip: padding-box;
        }

        .mx_NotificationBadge_dot {
            /* make the smaller dot occupy the same width for centering */
            margin: 0 -1px 0 0;
            border: 3px solid $spacePanel-bg-color;
        }

        .mx_NotificationBadge_2char,
        .mx_NotificationBadge_3char {
            margin: -5px -5px 0 0;
            border: 2px solid $spacePanel-bg-color;
        }
    }

    .mx_SpaceButton:hover,
    .mx_SpaceButton:focus-within,
    .mx_SpaceButton_hasMenuOpen {
        &:not(.mx_SpaceButton_narrow):not(.mx_SpaceButton_invite) .mx_SpaceButton_menuButton {
            display: block;
        }
    }

    .mx_SpaceItem:not(.mx_SpaceItem_new) {
        .mx_SpaceButton:hover,
        .mx_SpaceButton:focus-within,
        .mx_SpaceButton_hasMenuOpen {
            &:not(.mx_SpaceButton_narrow):not(.mx_SpaceButton_invite) .mx_SpaceButton_name {
                max-width: calc(100% - 56px);
            }
        }
    }

    /* root space buttons are bigger and not indented */
    & > .mx_AutoHideScrollbar {
        flex: 1;
        padding: 0 8px 16px 0;

        & > .mx_SpaceButton {
            height: var(--height-topLevel);

            &.mx_SpaceButton_active::before {
                height: var(--height-topLevel);
            }
        }

        & > ul {
            padding-left: 0;
        }

        &.mx_IndicatorScrollbar_topOverflow {
            mask-image: linear-gradient(180deg, transparent, black 5%);
        }

        &.mx_IndicatorScrollbar_bottomOverflow {
            mask-image: linear-gradient(180deg, black, black 95%, transparent);
        }

        &.mx_IndicatorScrollbar_topOverflow.mx_IndicatorScrollbar_bottomOverflow {
            mask-image: linear-gradient(180deg, transparent, black 5%, black 95%, transparent);
        }
    }

    .mx_UserMenu {
        padding: 0 2px 8px;
        border-bottom: 1px solid $separator;
        margin: 12px 14px 4px 18px;
        max-width: 226px;
    }
}

.mx_SpacePanel_contextMenu {
    max-width: 360px;

    .mx_SpacePanel_contextMenu_header {
        margin: 12px 16px 12px;
        font-weight: var(--cpd-font-weight-semibold);
        font-size: $font-15px;
        line-height: $font-18px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .mx_SpacePanel_iconHome::before {
        mask-image: url("$(res)/img/element-icons/home.svg");
    }

    .mx_SpacePanel_iconInvite::before {
        mask-image: url("$(res)/img/element-icons/room/invite.svg");
    }

    .mx_SpacePanel_iconSettings::before {
        mask-image: url("$(res)/img/element-icons/settings.svg");
    }

    .mx_SpacePanel_iconLeave::before {
        mask-image: url("$(res)/img/element-icons/leave.svg");
    }

    .mx_SpacePanel_iconMembers::before {
        mask-image: url("$(res)/img/element-icons/room/members.svg");
    }

    .mx_SpacePanel_iconPlus::before {
        mask-image: url("$(res)/img/element-icons/plus.svg");
    }

    .mx_SpacePanel_iconExplore::before {
        mask-image: url("$(res)/img/element-icons/roomlist/hash-search.svg");
    }

    .mx_SpacePanel_iconPreferences::before {
        mask-image: url("$(res)/img/element-icons/settings/preference.svg");
    }

    .mx_SpacePanel_noIcon {
        display: none;

        & + .mx_IconizedContextMenu_label {
            padding-left: 5px !important; /* override default iconized label style to align with header */
        }
    }

    .mx_SpacePanel_contextMenu_separatorLabel {
        color: $tertiary-content;
        font-size: $font-10px;
        line-height: $font-12px;
        font-weight: var(--cpd-font-weight-semibold);
        //margin-left: 8px;
    }
}

.mx_SpacePanel_sharePublicSpace {
    margin: 0;
}