61 lines
2.1 KiB
TypeScript
61 lines
2.1 KiB
TypeScript
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// The name of the ipc channel over which state changes are communicated.
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export const windowStateChannelName = 'window-state-changed';
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export type WindowState =
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| 'minimized'
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| 'normal'
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| 'maximized'
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| 'full-screen'
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| 'hidden';
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export function getWindowState(window: Electron.BrowserWindow): WindowState {
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if (window.isFullScreen()) {
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return 'full-screen';
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} else if (window.isMaximized()) {
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return 'maximized';
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} else if (window.isMinimized()) {
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return 'minimized';
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} else if (!window.isVisible()) {
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return 'hidden';
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} else {
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return 'normal';
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}
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}
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/**
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* Registers event handlers for all window state transition events and
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* forwards those to the renderer process for a given window.
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*/
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export function registerWindowStateChangedEvents(
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window: Electron.BrowserWindow
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) {
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window.on('enter-full-screen', () =>
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sendWindowStateEvent(window, 'full-screen')
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);
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// So this is a bit of a hack. If we call window.isFullScreen directly after
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// receiving the leave-full-screen event it'll return true which isn't what
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// we're after. So we'll say that we're transitioning to 'normal' even though
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// we might be maximized. This works because electron will emit a 'maximized'
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// event after 'leave-full-screen' if the state prior to full-screen was maximized.
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window.on('leave-full-screen', () => sendWindowStateEvent(window, 'normal'));
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window.on('maximize', () => sendWindowStateEvent(window, 'maximized'));
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window.on('minimize', () => sendWindowStateEvent(window, 'minimized'));
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window.on('unmaximize', () => sendWindowStateEvent(window, 'normal'));
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window.on('restore', () => sendWindowStateEvent(window, 'normal'));
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window.on('hide', () => sendWindowStateEvent(window, 'hidden'));
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window.on('show', () => sendWindowStateEvent(window, 'normal'));
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}
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/**
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* Short hand convenience function for sending a window state change event
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* over the window-state-changed channel to the render process.
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*/
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function sendWindowStateEvent(
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window: Electron.BrowserWindow,
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state: WindowState
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) {
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window.webContents.send(windowStateChannelName, state);
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}
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