Angular Material 2 : use a different font config for headers?

Question

我在 Angular 7 上有一个 Angular Material 2 应用程序。

我已关注documentation for typography并定义了基本排版:

$sc-typography-config: mat-typography-config(
  $font-family: '"Helvetica Neue", Helvetica, Arial, sans-serif',
  $display-4: mat-typography-level(112px, 112px, 300),
  $display-3: mat-typography-level(56px, 56px, 400),
  $display-2: mat-typography-level(45px, 48px, 400),
  $display-1: mat-typography-level(34px, 40px, 400),
  $headline: mat-typography-level(24px, 32px, 400),
  $title: mat-typography-level(20px, 32px, 500),
  $subheading-2: mat-typography-level(16px, 28px, 400),
  $subheading-1: mat-typography-level(15px, 24px, 400),
  $body-2: mat-typography-level(14px, 24px, 500),
  $body-1: mat-typography-level(14px, 20px, 400),
  $caption: mat-typography-level(12px, 18px, 400),
  $button: mat-typography-level(14px, 14px, 500),
  $input: mat-typography-level(14px, 1.25, 400)
);

然后按照文档中所述在 mat-core mixin 中定义此配置:

@include mat-core($sc-typography-config);

很好。

但是，我想对所有标题(显示、标题、标题)使用不同的配置。所以我做了第二个配置:

$brand-typography-config: mat-typography-config(
  $font-family: 'PrecisionSans,"Helvetica Neue", Helvetica, Arial, sans-serif'
);

我可以将其应用于按钮之类的东西

@include mat-button-typography($brand-typography-config);

但是如何覆盖显示-、标题-、副标题-*、标题等？

Answer 1

mat-typography-level的参数:

@function mat-typography-level(
    $font-size,
    $line-height: $font-size,
    $font-weight: 400,
    $font-family: null,
    $letter-spacing: null)

所以我认为你应该能够像这样使用它:

$alternative-font-family: 'PrecisionSans,"Helvetica Neue", Helvetica, Arial, sans-serif';
$sc-typography-config: mat-typography-config(
    $font-family: '"Helvetica Neue", Helvetica, Arial, sans-serif',
    $display-4: mat-typography-level(112px, 112px, 300),
    $display-3: mat-typography-level(56px, 56px, 400),
    $display-2: mat-typography-level(45px, 48px, 400),
    $display-1: mat-typography-level(34px, 40px, 400),
    $headline: mat-typography-level(24px, 32px, 400, $alternative-font-family), // <---
    $title: mat-typography-level(20px, 32px, 500),
    $subheading-2: mat-typography-level(16px, 28px, 400),
    $subheading-1: mat-typography-level(15px, 24px, 400),
    $body-2: mat-typography-level(14px, 24px, 500),
    $body-1: mat-typography-level(14px, 20px, 400),
    $caption: mat-typography-level(12px, 18px, 400),
    $button: mat-typography-level(14px, 14px, 500),
    $input: mat-typography-level(14px, 1.25, 400)
);