Theme Params

The 💠component responsible for the Telegram Mini Apps theme parameters.

Mounting

Before using the component, it must be mounted.

This process is asynchronous, as theme parameters need to be requested from the Telegram application. The isMounting signal will be set to true during the process and updated to false when complete.

If mounting is successful, the isMounted signal will be set to true. If errors occur, the mountError signal will reflect the error.

Variable

if (themeParams.mount.isAvailable()) {
  try {
    const promise = themeParams.mount();
    themeParams.isMounting(); // true
    await promise;
    themeParams.isMounting(); // false
    themeParams.isMounted(); // true
  } catch (err) {
    themeParams.mountError(); // equals "err"
    themeParams.isMounting(); // false
    themeParams.isMounted(); // false
  }
}

Functions

import {
  mountThemeParams,
  isThemeParamsMounting,
  isThemeParamsMounted,
  themeParamsMountError,
} from '@telegram-apps/sdk';

if (mountThemeParams.isAvailable()) {
  try {
    const promise = mountThemeParams();
    isThemeParamsMounting(); // true
    await promise;
    isThemeParamsMounting(); // false
    isThemeParamsMounted(); // true
  } catch (err) {
    themeParamsMountError(); // equals "err"
    isThemeParamsMounting(); // false
    isThemeParamsMounted(); // false
  }
}

To unmount, use the unmount method:

Variable

themeParams.unmount(); 
themeParams.isMounted(); // false

Functions

import {
  unmountThemeParams,
  isThemeParamsMounted,
} from '@telegram-apps/sdk';

unmountThemeParams();
isThemeParamsMounted(); // false

Binding CSS Variables

This scope allows its properties to be exposed via CSS variables.

To create new CSS variables, use the bindCssVars method. When called, it updates the isCssVarsBound signal property.

This method optionally accepts a function that receives a theme palette key in camel case format and returns a CSS variable name. By default, the method transforms the palette key using these rules:

• Converts the value to kebab case.
• Prepends the --tg-theme- prefix.

Variable

if (themeParams.bindCssVars.isAvailable()) {
  themeParams.bindCssVars();
  // Creates CSS variables like:
  // --tg-theme-button-color: #aabbcc
  // --tg-theme-accent-text-color: #aabbcc
  // --tg-theme-bg-color: #aabbcc
  // ...

  themeParams.bindCssVars(key => `--my-prefix-${key}`);
  // Creates CSS variables like:
  // --my-prefix-buttonColor: #aabbcc
  // --my-prefix-accentTextColor: #aabbcc
  // --my-prefix-bgColor: #aabbcc
  // ...

  // themeParams.isCssVarsBound() -> true
}

Functions

import {
  bindThemeParamsCssVars,
  isThemeParamsCssVarsBound,
} from '@telegram-apps/sdk';

if (bindThemeParamsCssVars.isAvailable()) {
  bindThemeParamsCssVars();
  // Creates CSS variables like:
  // --tg-theme-button-color: #aabbcc
  // --tg-theme-accent-text-color: #aabbcc
  // --tg-theme-bg-color: #aabbcc
  // ...

  bindThemeParamsCssVars(key => `--my-prefix-${key}`);
  // Creates CSS variables like:
  // --my-prefix-buttonColor: #aabbcc
  // --my-prefix-accentTextColor: #aabbcc
  // --my-prefix-bgColor: #aabbcc
  // ...
  
  // isThemeParamsCssVarsBound() -> true
}

Properties

Variable

themeParams.accentTextColor(); // RGB | undefined
themeParams.backgroundColor(); // RGB | undefined
themeParams.buttonTextColor(); // RGB | undefined
themeParams.buttonColor(); // RGB | undefined
themeParams.destructiveTextColor(); // RGB | undefined
themeParams.headerBackgroundColor(); // RGB | undefined
themeParams.hintColor(); // RGB | undefined
themeParams.linkColor(); // RGB | undefined
themeParams.subtitleTextColor(); // RGB | undefined
themeParams.sectionBackgroundColor(); // RGB | undefined
themeParams.secondaryBackgroundColor(); // RGB | undefined
themeParams.sectionSeparatorColor(); // RGB | undefined
themeParams.sectionHeaderTextColor(); // RGB | undefined
themeParams.textColor(); // RGB | undefined

themeParams.state(); // Record<string, RGB>;

Functions

import {
  themeParamsAccentTextColor,
  themeParamsBackgroundColor,
  themeParamsButtonTextColor,
  themeParamsButtonColor,
  themeParamsDestructiveTextColor,
  themeParamsHeaderBackgroundColor,
  themeParamsHintColor,
  themeParamsLinkColor,
  themeParamsSubtitleTextColor,
  themeParamsSectionBackgroundColor,
  themeParamsSecondaryBackgroundColor,
  themeParamsSectionSeparatorColor,
  themeParamsSectionHeaderTextColor,
  themeParamsTextColor,
  themeParamsState,
} from '@telegram-apps/sdk';

themeParamsAccentTextColor(); // RGB | undefined
themeParamsBackgroundColor(); // RGB | undefined
themeParamsButtonTextColor(); // RGB | undefined
themeParamsButtonColor(); // RGB | undefined
themeParamsDestructiveTextColor(); // RGB | undefined
themeParamsHeaderBackgroundColor(); // RGB | undefined
themeParamsHintColor(); // RGB | undefined
themeParamsLinkColor(); // RGB | undefined
themeParamsSubtitleTextColor(); // RGB | undefined
themeParamsSectionBackgroundColor(); // RGB | undefined
themeParamsSecondaryBackgroundColor(); // RGB | undefined
themeParamsSectionSeparatorColor(); // RGB | undefined
themeParamsSectionHeaderTextColor(); // RGB | undefined
themeParamsTextColor(); // RGB | undefined

themeParamsState(); // Record<string, RGB>;