Fullscreen Demo Demo Experiment Run Experiment

Fullscreen Demo

Jaap Murre

Demo of how to force subjects to do a task in fullscreen. Note that browsers keep changing the rules and conditions of when and how to allow fullscreen, so if you are going to use this, be sure to test these functions well.

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function manualFullscreen() 
    var d = new Box('white','#fafafa','black',100,5,'#f3f3f3',0,"square"),
        b = d.addblock("center","center",100,100,"white"),
        browser = BrowserDetect.browser;

    while (!isFullscreen()) 
        if (browser == "Safari")
            b.text("Please, press Command-Shift-F, so the browser window fills the entire screen
"); b.setimage("https://scripting.neurotask.com/assets/images/scripting/mac_keyboard.png"); } else { b.text("Please, press F11, so the browser window fills the entire screen
"); b.setimage("https://scripting.neurotask.com/assets/images/scripting/keyboard_f11.png"); } await("keypress"); await(100); // Give browser time to open window } d.destroy(); } function requestFullscreen(element,finish) { var i = element || document.getElementById("the-body"); // go full-screen if (i.requestFullscreen) { i.requestFullscreen(); } else if (i.webkitRequestFullscreen) { i.webkitRequestFullscreen(); } else if (i.mozRequestFullScreen) { i.mozRequestFullScreen(); } else if (i.msRequestFullscreen) { i.msRequestFullscreen(); } else { manualFullscreen(); } await(100); // TODO: Can this be much shorter or 0? finish(); } function exitFullscreen() { // exit full-screen if (document.exitFullscreen) { document.exitFullscreen(); } else if (document.webkitExitFullscreen) { document.webkitExitFullscreen(); } else if (document.mozCancelFullScreen) { document.mozCancelFullScreen(); } else if (document.msExitFullscreen) { document.msExitFullscreen(); } } function isFullscreen() { // Verify whether the outside of the window equals the screen size return screen.height === window.outerHeight && screen.width === window.outerWidth; } window.$$$always_force_fullscreen = false; aspect.after(window,'onresize', function() // aspect.after() is a Dojo function { if (isFullscreen()) { console.log("Resized (fullscreen)"); } else { console.log("Resized (not fullscreen)"); if (window.$$$always_force_fullscreen) { verifyFullscreen(); } } }); function verifyFullscreen(s) { s = s || "Click this to move back to full screen"; if (!isFullscreen()) { text(s); console.log("Forcing fullscreen"); await('click'); waitfor() { requestFullscreen(null,resume); } } } function ensureFullscreen(s) { verifyFullscreen("Start message"); window.$$$always_force_fullscreen = true; } // Pseudo-experiment during which we can try to get out of fullscreen main = makebox('centered','black'); // Redefine the main Box to black ensureFullscreen(); // Activates general fullscreen guard for (var i = 0; i < 5; i++) { // verifyFullscreen(); // Apply fullscreen check at specific points console.log("Loop: ",i); text("Click this until counter is 1. Counter " + (5-i)); await('click'); } exitFullscreen(); text("Exiting...");
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