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Prefer arrow functions and callbacks (#1210)

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Lipis 2020-05-20 16:21:37 +03:00 • committed by GitHub
parent 33fe223b5d
commit c427aa3cce
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64 changed files with 784 additions and 847 deletions
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99
src/utils.ts
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@ -6,9 +6,9 @@ export const SVG_NS = "http://www.w3.org/2000/svg";
let mockDateTime: string | null = null;
export function setDateTimeForTests(dateTime: string) {
export const setDateTimeForTests = (dateTime: string) => {
mockDateTime = dateTime;
}
};
export const getDateTime = () => {
if (mockDateTime) {
@ -25,51 +25,43 @@ export const getDateTime = () => {
return `${year}-${month}-${day}-${hr}${min}`;
};
export function capitalizeString(str: string) {
return str.charAt(0).toUpperCase() + str.slice(1);
}
export const capitalizeString = (str: string) =>
str.charAt(0).toUpperCase() + str.slice(1);
export function isToolIcon(
export const isToolIcon = (
target: Element | EventTarget | null,
): target is HTMLElement {
return target instanceof HTMLElement && target.className.includes("ToolIcon");
}
): target is HTMLElement =>
target instanceof HTMLElement && target.className.includes("ToolIcon");
export function isInputLike(
export const isInputLike = (
target: Element | EventTarget | null,
): target is
| HTMLInputElement
| HTMLTextAreaElement
| HTMLSelectElement
| HTMLBRElement
| HTMLDivElement {
return (
(target instanceof HTMLElement && target.dataset.type === "wysiwyg") ||
target instanceof HTMLBRElement || // newline in wysiwyg
target instanceof HTMLInputElement ||
target instanceof HTMLTextAreaElement ||
target instanceof HTMLSelectElement
);
}
| HTMLDivElement =>
(target instanceof HTMLElement && target.dataset.type === "wysiwyg") ||
target instanceof HTMLBRElement || // newline in wysiwyg
target instanceof HTMLInputElement ||
target instanceof HTMLTextAreaElement ||
target instanceof HTMLSelectElement;
export function isWritableElement(
export const isWritableElement = (
target: Element | EventTarget | null,
): target is
| HTMLInputElement
| HTMLTextAreaElement
| HTMLBRElement
| HTMLDivElement {
return (
(target instanceof HTMLElement && target.dataset.type === "wysiwyg") ||
target instanceof HTMLBRElement || // newline in wysiwyg
target instanceof HTMLTextAreaElement ||
(target instanceof HTMLInputElement &&
(target.type === "text" || target.type === "number"))
);
}
| HTMLDivElement =>
(target instanceof HTMLElement && target.dataset.type === "wysiwyg") ||
target instanceof HTMLBRElement || // newline in wysiwyg
target instanceof HTMLTextAreaElement ||
(target instanceof HTMLInputElement &&
(target.type === "text" || target.type === "number"));
// https://github.com/grassator/canvas-text-editor/blob/master/lib/FontMetrics.js
export function measureText(text: string, font: string) {
export const measureText = (text: string, font: string) => {
const line = document.createElement("div");
const body = document.body;
line.style.position = "absolute";
@ -93,12 +85,12 @@ export function measureText(text: string, font: string) {
document.body.removeChild(line);
return { width, height, baseline };
}
};
export function debounce<T extends any[]>(
export const debounce = <T extends any[]>(
fn: (...args: T) => void,
timeout: number,
) {
) => {
let handle = 0;
let lastArgs: T;
const ret = (...args: T) => {
@ -111,9 +103,9 @@ export function debounce<T extends any[]>(
fn(...lastArgs);
};
return ret;
}
};
export function selectNode(node: Element) {
export const selectNode = (node: Element) => {
const selection = window.getSelection();
if (selection) {
const range = document.createRange();
@ -121,30 +113,28 @@ export function selectNode(node: Element) {
selection.removeAllRanges();
selection.addRange(range);
}
}
};
export function removeSelection() {
export const removeSelection = () => {
const selection = window.getSelection();
if (selection) {
selection.removeAllRanges();
}
}
};
export function distance(x: number, y: number) {
return Math.abs(x - y);
}
export const distance = (x: number, y: number) => Math.abs(x - y);
export function resetCursor() {
export const resetCursor = () => {
document.documentElement.style.cursor = "";
}
};
export function setCursorForShape(shape: string) {
export const setCursorForShape = (shape: string) => {
if (shape === "selection") {
resetCursor();
} else {
document.documentElement.style.cursor = CURSOR_TYPE.CROSSHAIR;
}
}
};
export const isFullScreen = () =>
document.fullscreenElement?.nodeName === "HTML";
@ -165,7 +155,7 @@ export const getShortcutKey = (shortcut: string): string => {
}
return `${shortcut.replace(/CtrlOrCmd/i, "Ctrl")}`;
};
export function viewportCoordsToSceneCoords(
export const viewportCoordsToSceneCoords = (
{ clientX, clientY }: { clientX: number; clientY: number },
{
scrollX,
@ -178,7 +168,7 @@ export function viewportCoordsToSceneCoords(
},
canvas: HTMLCanvasElement | null,
scale: number,
) {
) => {
const zoomOrigin = getZoomOrigin(canvas, scale);
const clientXWithZoom = zoomOrigin.x + (clientX - zoomOrigin.x) / zoom;
const clientYWithZoom = zoomOrigin.y + (clientY - zoomOrigin.y) / zoom;
@ -187,9 +177,9 @@ export function viewportCoordsToSceneCoords(
const y = clientYWithZoom - scrollY;
return { x, y };
}
};
export function sceneCoordsToViewportCoords(
export const sceneCoordsToViewportCoords = (
{ sceneX, sceneY }: { sceneX: number; sceneY: number },
{
scrollX,
@ -202,7 +192,7 @@ export function sceneCoordsToViewportCoords(
},
canvas: HTMLCanvasElement | null,
scale: number,
) {
) => {
const zoomOrigin = getZoomOrigin(canvas, scale);
const sceneXWithZoomAndScroll =
zoomOrigin.x - (zoomOrigin.x - sceneX - scrollX) * zoom;
@ -213,10 +203,7 @@ export function sceneCoordsToViewportCoords(
const y = sceneYWithZoomAndScroll;
return { x, y };
}
};
export function getGlobalCSSVariable(name: string) {
return getComputedStyle(document.documentElement).getPropertyValue(
`--${name}`,
);
}
export const getGlobalCSSVariable = (name: string) =>
getComputedStyle(document.documentElement).getPropertyValue(`--${name}`);