element-web/res/css/views/voip/LegacyCallView/_LegacyCallViewButtons.pcss

/*
Copyright 2024 New Vector Ltd.
Copyright 2021, 2022 Šimon Brandner <simon.bra.ag@gmail.com>
Copyright 2020, 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 OR LicenseRef-Element-Commercial
Please see LICENSE files in the repository root for full details.
*/

/* data-whatintent makes more sense here semantically but then the tooltip would stay visible without the button */
/* which looks broken, so we match the behaviour of tooltips which is fine too. */
[data-whatinput="mouse"] .mx_LegacyCallViewButtons.mx_LegacyCallViewButtons_hidden {
    opacity: 0.001; /* opacity 0 can cause a re-layout */
    pointer-events: none;
}

.mx_LegacyCallViewButtons {
    --LegacyCallViewButtons_dropdownButton-size: 16px;

    position: absolute;
    display: flex;
    justify-content: center;
    bottom: 32px;
    opacity: 1;
    transition: opacity 0.5s;
    z-index: 200; /* To be above _all_ feeds */
    gap: 18px;

    .mx_LegacyCallViewButtons_button {
        cursor: pointer;

        background-color: $call-view-button-on-background;

        border-radius: 100%;
        height: 40px;
        width: 40px;

        display: flex;
        justify-content: center;
        align-items: center;

        position: relative;

        box-shadow: 0px 4px 4px 0px #00000026; /* Same on both themes */

        svg {
            display: inline-block;

            color: $call-view-button-on-foreground;

            height: 24px;
            width: 24px;
        }

        &.mx_LegacyCallViewButtons_dropdownButton {
            width: var(--LegacyCallViewButtons_dropdownButton-size);
            height: var(--LegacyCallViewButtons_dropdownButton-size);

            position: absolute;
            right: 0;
            bottom: 0;

            svg {
                width: 16px;
                height: 16px;
            }
        }

        &.mx_LegacyCallViewButtons_button_mic svg {
            height: 20px;
            width: 20px;
        }

        /* State buttons */
        &.mx_LegacyCallViewButtons_button_on {
            background-color: $call-view-button-on-background;

            svg {
                color: $call-view-button-on-foreground;
            }

            &.mx_LegacyCallViewButtons_button_screensharing {
                background-color: $accent;

                svg {
                    color: white; /* Same on both themes */
                }
            }
        }

        &.mx_LegacyCallViewButtons_button_off {
            background-color: $call-view-button-off-background;

            svg {
                color: $call-view-button-off-foreground;
            }

            &.mx_LegacyCallViewButtons_button_screensharing,
            &.mx_LegacyCallViewButtons_button_sidebar {
                background-color: $call-view-button-on-background;

                svg {
                    color: $call-view-button-on-foreground;
                }
            }
        }
        /* State buttons */

        /* Stateless buttons */
        &.mx_LegacyCallViewButtons_button_hangup {
            background-color: $alert;

            svg {
                color: white; /* Same on both themes */
            }
        }
        /* Stateless buttons */

        /* Invisible state */
        &.mx_LegacyCallViewButtons_button_invisible {
            visibility: hidden;
            pointer-events: none;
            position: absolute;
        }
        /* Invisible state */
    }
}