Function fullScreenChanged

Picviewer CE+/Picviewer CE+.user.js:15509–15521

()

                // 监视全屏的变化
                function fullScreenChanged() {
                    if (!document.fullscreenElement && // alternative standard method
                        !document.mozFullScreenElement &&
                        !document.webkitFullscreenElement &&
                        !document.msFullscreenElement) {

                        var btn = document.getElementById("pv-gallery-fullscreenbtn");
                        if (btn) {
                            btn.textContent = i18n("enterFullsc");
                            btn.classList.remove('fullscreenbtn');
                        }
                    }
                }
                document.addEventListener('webkitfullscreenchange', fullScreenChanged, false);
                document.addEventListener('mozfullscreenchange', fullScreenChanged, false);
                document.addEventListener('fullscreenchange', fullScreenChanged, false);