ultrawidify/js/lib/PlayerDetect.js

83 lines
2.8 KiB
JavaScript

/* sprejme <video> tag (element
// vrne dimenzije predvajalnika (širina, višina)
//
// Na youtube v theater mode je razširitev rahlo pokvarjena. Video tag ostane večji od predvajalnika, ko se zapusti
// celozaslonski način. Ta funkcija skuša to težavo rešiti tako, da poišče element predvajalnika, ki je zavit okoli videa.
//
// Funkcija izkorišča lastnost, da bi načeloma moral biti vsak zunanji element večji od notranjega. Najmanjši element od
// <video> značke pa do korena drevesa bi tako moral biti predvajalnik.
//
//
// | EN |
//
// accepts <video> tag (element)
// returns player dimensions (width, height)
//
// Theater mode is mildly broken on youtube. <video> tag remains bigger than the player after leaving the fullscreen mode, and
// there's nothing we can do about that. This function aims to solve the problem by finding the player element that's wrapped around
// the <video> tag.
//
// In general, an outer tag should be bigger than the inner tag. Therefore the smallest element between <video> tag and the document
// root should be the player.
*/
var _pd_getPlayerDimensions = function(element){
if(FullScreenDetect.isFullScreen()){
if(Debug.debug){
console.log("[PlayerDetect::_pd_getPlayerDimensions] video is full screen, returning player dimensions!");
}
return {
width: screen.width,
height: screen.height
};
}
if(Debug.debug){
console.log("[PlayerDetect::_pd_getPlayerDimensions] video is not full screen. Looking for player.");
}
var playerCandidateNode = element;
// in case our <video> is bigger than player in one dimension but smaller in the other
// if site is coded properly, player can't be wider than that
var candidate_width = Math.max(element.offsetWidth, screen.width);
var candidate_height = Math.max(element.offsetHeight, screen.height);
// <video> can't be root in a document, so we can do this
element = element.parentNode;
while(element.parentNode){
// odstranimo čudne elemente, ti bi pokvarili zadeve
// remove weird elements, those would break our stuff
if ( element.offsetWidth == 0 || element.offsetHeight == 0){
element = element.parentNode;
continue;
}
if ( element.offsetHeight <= candidate_height &&
element.offsetWidth <= candidate_width ){
playerCandidateNode = element;
candidate_width = element.offsetWidth;
candidate_height = element.offsetHeight;
if(Debug.debug){
console.log("Found new candidate for player. Dimensions: w:", candidate_width, "h:",candidate_height);
}
}
element = element.parentNode;
}
return {
width: playerCandidateNode.offsetWidth,
height: playerCandidateNode.offsetHeight
};
}
var PlayerDetect = {
getPlayerDimensions: _pd_getPlayerDimensions
}