72 lines
2.3 KiB
JavaScript
72 lines
2.3 KiB
JavaScript
// @flow
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import { SET_ASPECT_RATIO, SET_REDUCED_UI } from './actionTypes';
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import { ASPECT_RATIO_NARROW, ASPECT_RATIO_WIDE } from './constants';
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import type { Dispatch } from 'redux';
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/**
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* Size threshold for determining if we are in reduced UI mode or not.
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*
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* FIXME The logic to base {@code reducedUI} on a hardcoded width or height is
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* very brittle because it's completely disconnected from the UI which wants to
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* be rendered and, naturally, it broke on iPad where even the secondary Toolbar
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* didn't fit in the height. We do need to measure the actual UI at runtime and
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* determine whether and how to render it.
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*/
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const REDUCED_UI_THRESHOLD = 300;
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/**
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* Sets the aspect ratio of the app's user interface based on specific width and
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* height.
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*
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* @param {number} width - The width of the app's user interface.
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* @param {number} height - The height of the app's user interface.
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* @returns {{
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* type: SET_ASPECT_RATIO,
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* aspectRatio: Symbol
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* }}
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*/
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export function setAspectRatio(width: number, height: number): Function {
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return (dispatch: Dispatch<any>, getState: Function) => {
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// Don't change the aspect ratio if width and height are the same, that
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// is, if we transition to a 1:1 aspect ratio.
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if (width !== height) {
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const aspectRatio
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= width < height ? ASPECT_RATIO_NARROW : ASPECT_RATIO_WIDE;
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if (aspectRatio
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!== getState()['features/base/responsive-ui'].aspectRatio) {
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return dispatch({
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type: SET_ASPECT_RATIO,
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aspectRatio
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});
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}
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}
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};
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}
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/**
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* Sets the "reduced UI" property. In reduced UI mode some components will
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* be hidden if there is no space to render them.
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*
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* @param {number} width - Current usable width.
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* @param {number} height - Current usable height.
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* @returns {{
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* type: SET_REDUCED_UI,
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* reducedUI: boolean
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* }}
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*/
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export function setReducedUI(width: number, height: number): Function {
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return (dispatch: Dispatch<any>, getState: Function) => {
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const reducedUI = Math.min(width, height) < REDUCED_UI_THRESHOLD;
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if (reducedUI !== getState()['features/base/responsive-ui'].reducedUI) {
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return dispatch({
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type: SET_REDUCED_UI,
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reducedUI
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});
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}
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};
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}
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