86 lines
2.3 KiB
TypeScript
86 lines
2.3 KiB
TypeScript
import * as React from 'react';
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import styled from 'styled-components';
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interface HeadingProps {
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asElement?: 'h1'| 'h2'| 'h3'| 'h4';
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size?: 'default' | 'medium' | 'large' | 'small';
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isCentered?: boolean;
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isNoMargin?: boolean;
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color?: string;
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}
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interface ParagraphProps {
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isNoMargin?: boolean;
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size?: 'default' | 'small' | 'medium' | 'large';
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isMuted?: boolean | number;
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isCentered?: boolean;
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}
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interface HeadingSizes {
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large: string;
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medium: string;
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default: string;
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small: string;
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[key: string]: string;
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}
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interface ParagraphSizes {
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default: string;
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medium: string;
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large: string;
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[key: string]: string;
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}
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const HEADING_SIZES: HeadingSizes = {
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small: '20px',
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default: '28px',
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medium: '50px',
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large: '80px',
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};
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const HEADING_LINE_HEIGHTS: HeadingSizes = {
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small: '1.4em',
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default: '1.357142857em',
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medium: '1.16em',
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large: '1em',
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};
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const PARAGRAPH_SIZES: ParagraphSizes = {
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default: '18px',
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small: '14px',
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medium: '22px',
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large: '28px',
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};
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const StyledHeading = styled.h1<HeadingProps>`
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color: ${props => props.color || props.theme.textColor};
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font-size: ${props => HEADING_SIZES[props.size || 'default']};
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line-height: ${props => HEADING_LINE_HEIGHTS[props.size || 'default']};
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font-weight: 300;
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margin-bottom: ${props => !props.isNoMargin && '30px'};
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text-align: ${props => props.isCentered && 'center'};
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`;
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export const Heading: React.StatelessComponent<HeadingProps> = props => {
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const {
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asElement = 'h1',
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children,
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} = props;
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const Component = StyledHeading.withComponent(asElement);
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return <Component {...props}>{children}</Component>;
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};
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// No need to declare it twice as Styled then rewrap as a stateless comp
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// Note: this would be useful to be implemented the same way was "Heading"
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// and be more generic. e.g. <Text /> with a props asElement so we can use it
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// for literally anything =
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export const Paragraph = styled.p<ParagraphProps>`
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font-size: ${props => PARAGRAPH_SIZES[props.size || 'default']};
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margin-bottom: ${props => !props.isNoMargin && '30px'};
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line-height: 1.4;
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color: ${props => props.color || props.theme.textColor};
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opacity: ${props => typeof props.isMuted === 'boolean' ? 0.75 : props.isMuted};
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text-align: ${props => props.isCentered && 'center'};
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`;
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