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* This service manages multiple monitors or windows.
*/
export class MultiMonitorService {
public readonly numberOfScreens: number;
private windowsConfig;
private screenConfig;
private launchWindows = [];
private basePath: string;
public readonly screenNumber: number;
public readonly isMultimonitor: boolean;
public static readonly SOURCE_SCREEN = {
id: 'source',
// This is the primary screen, so don't launch is separately, but use primary
launch: 'source',
screen: null,
location: {
screen: null,
width: 1,
height: 1,
left: 0,
top: 0,
},
};
public static REGISTRATION = {
name: 'multiMonitorService',
create: ({ configuration, commandsManager }): MultiMonitorService => {
const service = new MultiMonitorService(configuration, commandsManager);
return service;
},
};
constructor(configuration, commandsManager) {
const params = new URLSearchParams(window.location.search);
const screenNumber = params.get('screenNumber');
const multimonitor = params.get('multimonitor');
const testParams = { params, screenNumber, multimonitor };
this.screenNumber = screenNumber ? Number(screenNumber) : -1;
this.commandsManager = commandsManager;
const windowAny = window as any;
windowAny.multimonitor ||= {
setLaunchWindows: this.setLaunchWindows,
launchWindows: this.launchWindows,
commandsManager,
};
windowAny.multimonitor.commandsManager = commandsManager;
this.launchWindows = (window as any).multimonitor?.launchWindows || this.launchWindows;
Iif (this.screenNumber !== -1) {
this.launchWindows[this.screenNumber] = window;
}
windowAny.commandsManager = (...args) => configuration.commandsManager;
for (const windowsConfig of Array.isArray(configuration) ? configuration : []) {
Iif (windowsConfig.test(testParams)) {
this.isMultimonitor = true;
this.numberOfScreens = windowsConfig.screens.length;
this.windowsConfig = windowsConfig;
if (this.screenNumber === -1 || this.screenNumber === null) {
this.screenConfig = MultiMonitorService.SOURCE_SCREEN;
} else {
this.screenConfig = windowsConfig.screens[this.screenNumber];
Iif (!this.screenConfig) {
throw new Error(`Screen ${screenNumber} not configured in ${this.windowsConfig}`);
}
window.name = this.screenConfig.id;
}
return;
}
this.numberOfScreens = 1;
this.isMultimonitor = false;
}
}
public async run(screenDelta = 1, commands, options) {
const screenNumber = (this.screenNumber + (screenDelta ?? 1)) % this.numberOfScreens;
const otherWindow = await this.getWindow(screenNumber);
Iif (!otherWindow) {
console.warn('No multimonitor found for screen', screenNumber, commands);
return;
}
Iif (!otherWindow.multimonitor?.commandsManager) {
console.warn("Didn't find a commands manager to run in the other window", otherWindow);
return;
}
otherWindow.multimonitor.commandsManager.runAsync(commands, options);
}
/** Sets the launch windows for later use, shared amongst all windows. */
public setLaunchWindows = launchWindows => {
this.launchWindows = launchWindows;
(window as any).multimonitor.launchWindows = launchWindows;
};
public async launchWindow(studyUid: string, screenDelta = 1, hashParams = '') {
const forScreen = (this.screenNumber + screenDelta) % this.numberOfScreens;
return this.getWindow(forScreen, studyUid ? `StudyInstanceUIDs=${studyUid}${hashParams}` : '');
}
public async getWindow(screenNumber, hashParam?: string) {
Iif (screenNumber === this.screenNumber) {
return window;
}
Iif (this.launchWindows[screenNumber] && !this.launchWindows[screenNumber].closed) {
return this.launchWindows[screenNumber];
}
return await this.createWindow(screenNumber, hashParam);
}
/**
* Creates a new window showing the given url by default, or gets an existing
* window.
*/
public async createWindow(screenNumber, urlToUse?: string) {
Iif (screenNumber === this.screenNumber) {
return window;
}
const screenInfo = this.windowsConfig.screens[screenNumber];
const screenDetails = await window.getScreenDetails?.();
const screen =
(screenInfo.screen >= 0 && screenDetails.screens[screenInfo.screen]) ||
screenDetails.currentScreen ||
window.screen;
const { width = 1024, height = 1024, availLeft = 0, availTop = 0 } = screen || {};
const newScreen = this.windowsConfig.screens[screenNumber];
const {
width: widthPercent = 1,
height: heightPercent = 1,
top: topPercent = 0,
left: leftPercent = 0,
} = newScreen.location || {};
const useLeft = Math.round(availLeft + leftPercent * width);
const useTop = Math.round(availTop + topPercent * height);
const useWidth = Math.round(width * widthPercent);
const useHeight = Math.round(height * heightPercent);
const baseFinalUrl = `${this.basePath}&screenNumber=${screenNumber}`;
const finalUrl = urlToUse ? `${baseFinalUrl}#${urlToUse}` : baseFinalUrl;
const newId = newScreen.id;
const options = newScreen.options || '';
const position = `screenX=${useLeft},screenY=${useTop},width=${useWidth},height=${useHeight},${options}`;
let newWindow = window.open('', newId, position);
Iif (!newWindow?.location.href.startsWith(baseFinalUrl)) {
newWindow = window.open(finalUrl, newId, position);
}
Iif (!newWindow) {
console.warn('Unable to launch window', finalUrl, 'called', newId, 'at', position);
return;
}
// Wait for the window to fully load
await new Promise<void>(resolve => {
if (newWindow.document.readyState === 'complete') {
resolve();
} else {
newWindow.addEventListener('load', () => resolve());
}
});
this.launchWindows[screenNumber] = newWindow;
return newWindow;
}
/** Launches all the windows using the initial configuration */
public launchAll() {
for (let i = 0; i < this.numberOfScreens; i++) {
this.createWindow(i);
}
}
/**
* Sets the base path to use for launching other windows, based on the
* original base path without hash values in order to preserve consistent
* URLs so that windows are refreshed on relaunch.
*/
public setBasePath() {
const url = new URL(window.location.href);
url.searchParams.delete('screenNumber');
url.searchParams.delete('protocolId');
url.searchParams.delete('launchAll');
url.searchParams.set('multimonitor', url.searchParams.get('multimonitor') || 'split');
url.hash = '';
this.basePath = url.toString();
}
/**
* Try moving the screen to the correct location - this will only work with
* screens opened with openWindow containing no more than 1 tab.
*/
public async onModeEnter() {
this.setBasePath();
Iif (
(this.isMultimonitor && this.screenNumber === -1) ||
window.location.href.toLowerCase().indexOf('launchall') !== -1
) {
this.launchAll();
}
}
}
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