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: 14px;
    --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;

    &.collapsed {
        width: 68px;
    }

    .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_narrow .mx_SpaceButton_selectionWrapper {
            flex: initial;
            width: 32px;
        }

        .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 0 16px 0;
        scrollbar-gutter: stable;

        & > .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(to bottom, transparent, black 16px);
        }

        &.mx_IndicatorScrollbar_bottomOverflow {
            mask-image: linear-gradient(
                to top,
                transparent,
                rgba(255, 255, 255, 30%) 4px,
                rgba(255, 255, 255, 55%) 8px,
                rgba(255, 255, 255, 75%) 12px,
                black 16px
            );
        }

        &.mx_IndicatorScrollbar_topOverflow.mx_IndicatorScrollbar_bottomOverflow {
            /* This stacks two gradients on top of one another, which lets us
               have a fixed pixel offset from both top and bottom for the colour stops.
               Note the top fade is much smaller because the spaces start close to the top,
               so otherwise a large gradient suddenly appears when you scroll down.
             */
            mask-image: linear-gradient(to bottom, transparent, black 16px),
                linear-gradient(
                    to top,
                    transparent,
                    rgba(255, 255, 255, 30%) 4px,
                    rgba(255, 255, 255, 55%) 8px,
                    rgba(255, 255, 255, 75%) 12px,
                    black 16px
                );
            mask-position:
                0% 0%,
                0% 100%;
            mask-size:
                calc(100% - 10px) 50%,
                calc(100% - 10px) 50%;
            mask-repeat: no-repeat;
        }
    }

    .mx_UserMenu {
        padding-bottom: 12px;
        border-bottom: 1px solid $separator;
        margin: 12px 14px 4px 18px;
        width: min-content;
        max-width: 226px;

        /* Display the container and img here as block elements so they don't take
         * up extra vertical space.
         */
        .mx_UserMenu_userAvatar_BaseAvatar {
            display: block;
        }
    }
}

.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);
    }
}

.mx_SpacePanel_sharePublicSpace {
    margin: 0;
}