62 lines
1.7 KiB
TypeScript
62 lines
1.7 KiB
TypeScript
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import {
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DEFAULT_FONT_SIZE,
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MAX_FONT_SIZE,
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MIN_FONT_SIZE,
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} from "../../../infrastructure/config/fonts";
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type WheelLike = Pick<WheelEvent, "ctrlKey" | "metaKey" | "deltaY">;
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const TERMINAL_FONT_SIZE_ACTIONS = new Set([
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"increaseTerminalFontSize",
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"decreaseTerminalFontSize",
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"resetTerminalFontSize",
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]);
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export const terminalFontSizeWheelListenerOptions = {
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passive: false,
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capture: true,
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} as const satisfies AddEventListenerOptions;
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export const clampTerminalFontSize = (fontSize: number): number =>
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Math.max(MIN_FONT_SIZE, Math.min(MAX_FONT_SIZE, fontSize));
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export const isTerminalFontSizeAction = (action: string): boolean =>
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TERMINAL_FONT_SIZE_ACTIONS.has(action);
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export const shouldHandleTerminalFontSizeAction = (
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action: string,
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disabled = false,
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): boolean => isTerminalFontSizeAction(action) && !disabled;
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export const nextTerminalFontSizeForAction = (
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action: string,
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currentFontSize: number,
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disabled = false,
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): number | null => {
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if (disabled) return null;
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switch (action) {
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case "increaseTerminalFontSize":
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return clampTerminalFontSize(currentFontSize + 1);
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case "decreaseTerminalFontSize":
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return clampTerminalFontSize(currentFontSize - 1);
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case "resetTerminalFontSize":
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return DEFAULT_FONT_SIZE;
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default:
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return null;
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}
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};
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export const nextTerminalFontSizeForWheel = (
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event: WheelLike,
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currentFontSize: number,
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isMac: boolean,
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disabled = false,
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): number | null => {
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if (disabled) return null;
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const hasZoomModifier = isMac
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? event.metaKey && !event.ctrlKey
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: event.ctrlKey && !event.metaKey;
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if (!hasZoomModifier || event.deltaY === 0) return null;
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return clampTerminalFontSize(currentFontSize + (event.deltaY < 0 ? 1 : -1));
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};
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