@components-1812/offcanvas/src/Offcanvas.css

A web component for custom offcanvas, lateral panel

/**
 * package: @components-1812/offcanvas
 * version: 0.0.3
*/
:host {
    --offcanvas-position: absolute;
    --offcanvas-z-index: 8010;

    width: 100%;
    height: 100%;
    position: var(--offcanvas-position);
    top: 0;
    left: 0;
    z-index: var(--offcanvas-z-index);

    pointer-events: none;

    /* Panel */
    --offcanvas-panel-width: 300px;
    --offcanvas-panel-height: 100%;
    --offcanvas-panel-padding: 5px;
    --offcanvas-panel-transition: margin 0.3s ease-in-out;

    --offcanvas-panel-header-padding: 5px;
    --offcanvas-panel-body-padding: 5px;
    --offcanvas-panel-footer-padding: 5px;

    --offcanvas-panel-bg: #222;
    --offcanvas-panel-color: #fff;
    --offcanvas-panel-header-bg: var(--offcanvas-panel-bg);
    --offcanvas-panel-header-color: var(--offcanvas-panel-color);
    --offcanvas-panel-footer-bg: var(--offcanvas-panel-bg);
    --offcanvas-panel-footer-color: var(--offcanvas-panel-color);

    --offcanvas-panel-border: 1px solid #ccc;
    --offcanvas-panel-border-radius: 0px;

    --offcanvas-panel-shadow: 0 1px 3px 0 #3c40434d, 0 4px 8px 3px #3c404326;

    /* Backdrop */
    --offcanvas-backdrop-bg: #00000080;
    --offcanvas-backdrop-color: #fff;
    --offcanvas-backdrop-transition: background-color 0.3s ease-in-out;

    /* Close button */
    --offcanvas-close-button-width: 40px;
    --offcanvas-close-button-height: 40px;
    --offcanvas-close-button-padding: 10px;

    --offcanvas-close-button-bg: transparent;
    --offcanvas-close-button-color: #fff;

    --offcanvas-close-button-border: none;
    
    --offcanvas-close-button-font-size: 1.5rem;
    --offcanvas-close-button-cursor: pointer;

    /* Handle button */
    --offcanvas-handle-button-width: 50px;
    --offcanvas-handle-button-height: 100px;
    --offcanvas-handle-button-padding: 5px;

    --offcanvas-handle-button-bg: #444;
    --offcanvas-handle-button-color: #fff;

    --offcanvas-handle-button-border: none;
    --offcanvas-handle-button-border-radius: 10px;

    --offcanvas-handle-button-cursor: pointer;
    --offcanvas-handle-button-font-size: 1rem;
    --offcanvas-handle-button-shadow: var(--offcanvas-panel-shadow);
}
:host([variant~="top"]), :host([variant~="bottom"]) {
    --offcanvas-panel-width: 100%;
    --offcanvas-panel-height: 300px;

    --offcanvas-handle-button-width: 100px;
    --offcanvas-handle-button-height: 50px;

    --offcanvas-panel-shadow: 1px 0 3px 0 #3c40434d, 4px 0 8px 3px #3c404326;
}
:host([variant~="global"]) {
    --offcanvas-position: fixed;
}
:host([variant~="local"]) {
    --offcanvas-position: absolute;
}
:host .offcanvas {
    width: 100%;
    height: 100%;
    
    background-color: transparent;
    transition: var(--offcanvas-backdrop-transition);

    pointer-events: none;
    display: flex;

    &[open]:not([variant~="backdrop-transparent"]) {
        background-color: var(--offcanvas-backdrop-bg);
    }

    &[variant~="left"], & {
        flex-direction: row;
    }
    &[variant~="right"] {
        flex-direction: row-reverse;
    }
    &[variant~="top"] {
        flex-direction: column;
    }
    &[variant~="bottom"] {
        flex-direction: column-reverse;
    }
}
/*MARK: Panel*/
:host .offcanvas {
    .panel {
        width: var(--offcanvas-panel-width);
        height: var(--offcanvas-panel-height);
        padding: var(--offcanvas-panel-padding);    
        position: relative;
        box-sizing: border-box;

        pointer-events: initial;
        background: var(--offcanvas-panel-bg);
        color: var(--offcanvas-panel-color);
    
        overflow: hidden;
        
        transition: var(--offcanvas-panel-transition);

        .panel-content {
            position: relative;
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
    
            overflow: hidden;
        }
        .panel-header {
            position: relative;
            padding: var(--offcanvas-panel-header-padding);
            background: var(--offcanvas-panel-header-bg);
            color: var(--offcanvas-panel-header-color);
        }
        .panel-body {
            position: relative;
            flex: 1 1 auto;
            padding: var(--offcanvas-panel-body-padding);
        }
        .panel-footer {
            position: relative;
            padding: var(--offcanvas-panel-footer-padding);
            background: var(--offcanvas-panel-footer-bg);
            color: var(--offcanvas-panel-footer-color);
        }
    }
    &[variant~="scroll-full"] .panel-content {
        overflow: auto;
    }
    &[variant~="scroll-inner"] .panel-content {
        overflow: auto;
        .panel-header {
            position: sticky;
            inset: 0 auto auto 0;
            z-index: 10;
        }
    }
    &[variant~="scroll-body"] .panel {
        .panel-body {
            overflow: auto;
        }
    }

    &[variant~="left"] .panel, .panel {
        border-top: none;
        border-left: none;
        border-bottom: none;
        border-right: var(--offcanvas-panel-border);
        border-radius: 0 var(--offcanvas-panel-border-radius) var(--offcanvas-panel-border-radius) 0;
        margin: 0 0 0 calc(-1 * var(--offcanvas-panel-width));
    }
    &[variant~="right"] .panel {
        border-top: none;
        border-left: var(--offcanvas-panel-border);;
        border-bottom: none;
        border-right: none;
        border-radius: var(--offcanvas-panel-border-radius) 0 0 var(--offcanvas-panel-border-radius);
        margin: 0 calc(-1 * var(--offcanvas-panel-width)) 0 0;
    }
    &[variant~="top"] .panel {
        border-top: none;
        border-left: none;
        border-bottom: var(--offcanvas-panel-border);
        border-right:  none;
        border-radius: 0 0 var(--offcanvas-panel-border-radius) var(--offcanvas-panel-border-radius);
        margin: calc(-1 * var(--offcanvas-panel-height)) 0 0 0;
    }
    &[variant~="bottom"] .panel {
        border-top: var(--offcanvas-panel-border);
        border-left: none;
        border-bottom: none;
        border-right: none;
        border-radius: var(--offcanvas-panel-border-radius) var(--offcanvas-panel-border-radius) 0 0;
        margin: 0 0 calc(-1 * var(--offcanvas-panel-height)) 0;
    }
    &[open] .panel {
        box-shadow: var(--offcanvas-panel-shadow);
        margin: 0; 
    }
}
/*MARK: Backdrop */
:host .offcanvas {

    .offcanvas-backdrop {
        pointer-events: none;
        flex: 1 1 auto;
        position: relative;
        color: var(--offcanvas-backdrop-color);

        ::slotted(*) {
            pointer-events: initial;
        }
        ::slotted([data-hide-when-closed]){
            display: none;
        }
    }
    &[open] .offcanvas-backdrop {

        pointer-events: initial;

        ::slotted([data-hide-when-closed]){
            display: unset;
        }
        ::slotted([data-hide-when-opened]){
            display: none;
        }
    }
    &[open][variant~="backdrop-static"] .offcanvas-backdrop {
        pointer-events: none;
    }
}
/*MARK: Close button*/
:host .offcanvas {
    .close-button {
        pointer-events: initial;
        position: absolute;
        inset: 0 0 auto auto;

        width: var(--offcanvas-close-button-width);
        height: var(--offcanvas-close-button-height);
        padding: var(--offcanvas-close-button-padding);

        background: var(--offcanvas-close-button-bg);
        color: var(--offcanvas-close-button-color);

        border: var(--offcanvas-close-button-border);
        font-size: var(--offcanvas-close-button-font-size);
        cursor: var(--offcanvas-close-button-cursor);

        display: flex;
        align-items: center;
        justify-content: center;
    }
}
/*MARK: Handle button*/
:host .offcanvas {
    .handle-button {
        pointer-events: initial;
        position: absolute;
        box-sizing: border-box;

        width: var(--offcanvas-handle-button-width);
        height: var(--offcanvas-handle-button-height);
        padding: var(--offcanvas-handle-button-padding);

        background: var(--offcanvas-handle-button-bg);
        color: var(--offcanvas-handle-button-color);
        box-shadow: var(--offcanvas-handle-button-shadow);

        border: var(--offcanvas-handle-button-border);
        font-size: var(--offcanvas-handle-button-font-size);
        cursor: var(--offcanvas-handle-button-cursor);

        margin: auto;
    }
    &[variant~="left"], & {

        .handle-button {
            inset: 0 auto 0 0;
            border-radius: 0 var(--offcanvas-handle-button-border-radius) var(--offcanvas-handle-button-border-radius) 0;

            ::slotted([data-rotate-icon]), svg[data-rotate-icon]{
                rotate: 0deg;
            }
        }
        &[open] .handle-button {
            ::slotted([data-rotate-icon]), svg[data-rotate-icon]{
                rotate: 180deg;
            }
        }
    }
    &[variant~="right"] {
        .handle-button {
            inset: 0 0 0 auto;
            border-radius: var(--offcanvas-handle-button-border-radius) 0 0 var(--offcanvas-handle-button-border-radius);
            
            ::slotted([data-rotate-icon]), svg[data-rotate-icon]{
                rotate: 180deg;
            }
        }
        &[open] .handle-button {
            ::slotted([data-rotate-icon]), svg[data-rotate-icon]{
                rotate: 0deg;
            }
        }
    }
    &[variant~="top"] {
        .handle-button {
            inset: 0 0 auto 0;
            border-radius: 0 0 var(--offcanvas-handle-button-border-radius) var(--offcanvas-handle-button-border-radius);

            ::slotted([data-rotate-icon]), svg[data-rotate-icon]{
                rotate: 90deg;
            }
        }
        &[open] .handle-button {
            ::slotted([data-rotate-icon]), svg[data-rotate-icon]{
                rotate: -90deg;
            }
        }
    }
    &[variant~="bottom"] {
        .handle-button {
            inset: auto 0 0 0;
            border-radius: var(--offcanvas-handle-button-border-radius) var(--offcanvas-handle-button-border-radius) 0 0;

            ::slotted([data-rotate-icon]), svg[data-rotate-icon]{
                rotate: -90deg;
            }
        }
        &[open] .handle-button {
            ::slotted([data-rotate-icon]), svg[data-rotate-icon]{
                rotate: 90deg;
            }
        }
    }
}