我正在做这样的事情。
// theme.js
import { createMuiTheme } from '@material-ui/core/styles';
const theme = createMuiTheme({
overrides: {
MuiToolbar: {
gutters: {
[theme.breakpoints.up('sm')]: {
paddingLeft: '16px',
paddingRight: '16px',
},
},
},
},
palette: {
type: 'dark',
},
});
export default theme;
错误消息:TypeError: Cannot read property 'breakpoints' of undefined
。
我想获取主题样式值并用于覆盖,如何解决此错误。
对于所有主题样式/组件(例如paper
)来说,24像素装订线对我来说太多了,我如何用16像素替换轻松覆盖所有装订线?
非常感谢。
答案 0 :(得分:1)
与answered in this question一样,您需要创建默认主题的实例,因此您有一个对象可从以下对象获取断点:
import { createMuiTheme } from '@material-ui/core/styles';
const defaultTheme = createMuiTheme();
const theme = createMuiTheme({
overrides: {
MuiToolbar: {
gutters: {
[defaultTheme.breakpoints.up('sm')]: {
paddingLeft: '16px',
paddingRight: '16px',
},
},
},
},
palette: {
type: 'dark',
},
});
export default theme;
关于“全局”装订线属性Toolbar
uses theme.mixins.gutters()
来获取默认装订线,因此我认为您必须重写它。查看this function source,这应该是将装订线设置为16px的正确替代方法:
import { createMuiTheme } from '@material-ui/core/styles';
const defaultTheme = createMuiTheme();
const theme = createMuiTheme({
mixins: {
gutters: (styles = {}) => ({
paddingLeft: defaultTheme.spacing.unit * 2,
paddingRight: defaultTheme.spacing.unit * 2,
...styles,
[defaultTheme.breakpoints.up('sm')]: {
paddingLeft: defaultTheme.spacing.unit * 2,
paddingRight: defaultTheme.spacing.unit * 2,
...styles[defaultTheme.breakpoints.up('sm')],
},
}),
},
palette: {
type: 'dark',
},
});
export default theme;