385 lines
11 KiB
JavaScript
385 lines
11 KiB
JavaScript
if(Debug.debug)
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console.log("Loading: Resizer.js");
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var StretchMode = {
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NO_STRETCH: 0,
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CONDITIONAL: 1,
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FULL: 2
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}
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class Resizer {
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constructor(videoData){
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this.conf = videoData;
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this.video = videoData.video;
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this.scaler = new Scaler();
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this.stretcher = new Stretcher();
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this.zoom = new Zoom();
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// load up default values
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this.correctedVideoDimensions = {};
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this.currentCss = {};
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this.stretch = {mode: ExtensionConf.stretch.initialMode};
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// restore watchdog. While true, applyCss() tries to re-apply new css until this value becomes false again
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// value becomes false when width and height of <video> tag match with what we want to set. Only necessary when
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// calling _res_restore() for some weird reason.
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this.restore_wd = false;
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this.lastAr = {type: 'original'};
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}
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setAr(ar, lastAr){
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if(Debug.debug){
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console.log('[Resizer::setAr] trying to set ar. New ar:', ar)
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}
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if(lastAr) {
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this.lastAr = lastAr;
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} else {
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if(isNaN(ar)){
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this.lastAr = {type: 'legacy', ar: ar}
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} else {
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this.lastAr = {type: 'static', ar: ar};
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}
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}
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if (! this.video) {
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// console.log("No video detected.")
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// this.videoData.destroy();
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}
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var dimensions = Scaler.calculateCrop(ar, this.video, this.conf.player.dimensions);
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if(dimensions.error){
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if(Debug.debug){
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console.log("[Resizer::setAr] failed to set AR due to problem with calculating crop. Error:", dimensions.error)
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}
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return;
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}
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var stretchFactors = undefined;
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// if we set stretching, we apply stretching
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if (this.stretch.mode == StretchMode.FULL){
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stretchFactors = Stretcher.calculateStretch(dimensions);
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} else if (this.stretch.mode == StretchMode.CONDITIONAL) {
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stretchFactors = Stretcher.conditionalStretch(dimensions, ExtensionConf.stretch.conditionalDifferencePercent);
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}
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this.zoom.applyZoom(dimensions);
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var cssOffsets = this.computeOffsets(dimensions);
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this.applyCss(cssOffsets, stretchFactors);
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}
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setLastAr(override){
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this.lastAr = override;
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}
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getLastAr(){
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return this.lastAr;
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}
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setStretchMode(stretchMode){
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this.stretch.mode = stretchMode;
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}
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setPan(relativeMousePosX, relativeMousePosY){
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// relativeMousePos[X|Y] - on scale from 0 to 1, how close is the mouse to player edges.
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// use these values: top, left: 0, bottom, right: 1
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if(! this.pan){
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this.pan = {};
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}
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this.pan.relativeOffsetX = relativeMousePosX*2.5 - 1.25;
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this.pan.relativeOffsetY = relativeMousePosY*2.5 - 1.25;
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}
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startCssWatcher(){
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this.cssWatcherTimeout = setInterval(this.cssWatcher, 200);
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}
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stopCssWatcher(){
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clearInterval(this.cssWatcherTimeout);
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}
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restore(){
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if(Debug.debug){
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console.log("[Resizer::restore] attempting to restore aspect ratio. this & settings:", {'this': this, "settings": Settings} );
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}
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// this is true until we verify that css has actually been applied
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this.restore_wd = true;
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if(this.lastAr.type === 'original'){
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this.setAr('reset');
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}
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else {
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this.setAr(this.lastAr.ar, this.lastAr)
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}
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}
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reset(){
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this.setStretchMode(StretchMode.NO_STRETCH);
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this.zoom.setZoom(1);
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this.resetPan();
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this.setAr('reset');
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}
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resetPan(){
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this.pan = undefined;
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}
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resetZoom(){
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this.zoom.setZoom(1);
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this.restore();
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}
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resetCrop(){
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this.setAr('reset');
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}
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resetStretch(){
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this.stretch.mode = StretchMode.NO_STRETCH;
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this.restore();
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}
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// mostly internal stuff
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computeOffsets(videoDimensions){
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if(Debug.debug)
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console.log("[Resizer::_res_computeOffsets] video will be aligned to ", ExtensionConf.miscFullscreenSettings.videoFloat);
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var offsets = {
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width: videoDimensions.width,
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height: videoDimensions.height,
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left: 0,
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top: ((this.conf.player.dimensions.height - videoDimensions.height) / 2)
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}
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if(this.pan){
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var defaultOffset = (this.conf.player.dimensions.height - videoDimensions.height) / 2;
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offsets.top = defaultOffset + (defualtOffset * this.pan.relativeOffsetY);
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defaultOffset = (this.conf.player.dimensions.width - videoDimensions.width ) / 2;
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offsets.left = defaultOffset + (defaultOffset * this.pan.relativeOffsetX);
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} else {
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if( ExtensionConf.miscFullscreenSettings.videoFloat == "center" ){
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offsets.left = (this.conf.player.dimensions.width - videoDimensions.width ) / 2;
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}
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else if( ExtensionConf.miscFullscreenSettings.videoFloat == "right" ){
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offsets.left = (this.conf.player.dimensions.height - videoDimensions.height);
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}
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}
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this.correctedVideoDimensions.width = parseInt(offsets.width);
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this.correctedVideoDimensions.height= parseInt(offsets.height);
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this.correctedVideoDimensions.left = parseInt(offsets.left);
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this.correctedVideoDimensions.top = parseInt(offsets.top);
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return offsets;
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}
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applyCss(dimensions, stretchFactors){
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if(this.video == undefined || this.video == null){
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if(Debug.debug)
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console.log("[Resizer::_res_applyCss] Video went missing, doing nothing.");
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return;
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}
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if(Debug.debug)
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console.log("[Resizer::_res_applyCss] Starting to apply css. this is what we're getting in:", dimensions);
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if(dimensions.top !== undefined)
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dimensions.top = "top: " + Math.round(dimensions.top) + "px !important";
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if(dimensions.left !== undefined)
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dimensions.left = "left: " + Math.round(dimensions.left) + "px !important";
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if(dimensions.width !== undefined)
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dimensions.width = "width: " + Math.round(dimensions.width) + "px !important";
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if(dimensions.height !== undefined)
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dimensions.height = "height: " + Math.round(dimensions.height) + "px !important";
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// misc.
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dimensions.position = "position: absolute !important";
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dimensions.margin = "margin: 0px !important";
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// save values for left and top to
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this.currentCss.top = dimensions.top;
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this.currentCss.left = dimensions.left;
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if(Debug.debug)
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console.log("[Resizer::_res_applyCss] trying to apply css. Css strings: ", dimensions, "video tag: ", this.video);
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var styleArrayStr = this.video.getAttribute('style');
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if (styleArrayStr !== null && styleArrayStr !== undefined){
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var styleArray = styleArrayStr.split(";");
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for(var i in styleArray){
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styleArray[i] = styleArray[i].trim();
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if (styleArray[i].startsWith("top:")){
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styleArray[i] = dimensions.top;
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delete dimensions.top;
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}
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else if(styleArray[i].startsWith("left:")){
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styleArray[i] = dimensions.left;
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delete dimensions.left;
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}
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else if(styleArray[i].startsWith("width:")){
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styleArray[i] = dimensions.width;
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delete dimensions.width;
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}
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else if(styleArray[i].startsWith("height:")){
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styleArray[i] = dimensions.height;
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delete dimensions.height;
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}
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else if(styleArray[i].startsWith("position:")){
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styleArray[i] = dimensions.position;
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delete dimensions.position;
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}
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else if(styleArray[i].startsWith("margin:")){
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styleArray[i] = dimensions.margin;
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delete dimensions.margin;
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}
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else if(styleArray[i].startsWith("transform:")){
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if(stretchFactors){
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styleArray[i] = `scale(${stretchFactors.x}, ${stretchFactors.y}`;
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stretchFactors = undefined;
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}
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}
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}
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}
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else{
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var styleArray = [];
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}
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// add remaining elements
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for(var key in dimensions)
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styleArray.push( dimensions[key] );
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if(stretchFactors){
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styleArray.push(`scale(${stretchFactors.x}, ${stretchFactors.y}`);
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}
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// build style string back
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var styleString = "";
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for(var i in styleArray)
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if(styleArray[i] !== undefined && styleArray[i] !== "")
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styleString += styleArray[i] + "; ";
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this.setStyleString(styleString);
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}
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setStyleString (styleString, count = 0) {
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this.video.setAttribute("style", styleString);
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if(this.restore_wd){
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if(this.video == undefined || this.video == null){
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if(Debug.debug)
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console.log("[Resizer::_res_setStyleString] Video element went missing, nothing to do here.")
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return;
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}
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if(
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styleString.indexOf("width: " + this.video.style.width) == -1 ||
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styleString.indexOf("height: " + this.video.style.height) == -1) {
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// css ni nastavljen?
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// css not set?
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if(Debug.debug)
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console.log("[Resizer::_res_setStyleString] Style string not set ???");
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if(count < ExtensionConf.resizer.setStyleString.maxRetries){
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setTimeout( this.setStyleString, ExtensionConf.resizer.setStyleString.retryTimeout, count + 1);
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}
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else if(Debug.debug){
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console.log("[Resizer::_res_setStyleString] we give up. css string won't be set");
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}
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}
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else{
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this.restore_wd = false;
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}
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}
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else{
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if(Debug.debug)
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console.log("[Resizer::_res_setStyleString] css applied. Style string:", styleString);
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}
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}
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cssWatcher(){
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// this means we haven't set our CSS yet, or that we changed video.
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if(! this.currentCss.top)
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return;
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// this means video went missing.
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if(! this.video)
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return;
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// // our current css is fucky? Null, undefined and 0 are invalid values.
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// if(! GlobalVars.currentCss.width || ! GlobalVars.currentCss.height )
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// return;
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var styleArrayStr = this.video.getAttribute('style');
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if (styleArrayStr){
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var styleArray = styleArrayStr.split(";");
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var stuffChecked = 0;
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var stuffToCheck = 2;
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for(var i in styleArray){
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styleArray[i] = styleArray[i].trim();
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if (styleArray[i].startsWith("top:")){
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// don't force css restore if currentCss.top is not defined
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if(this.currentCss.top && styleArray[i] != this.currentCss.top){
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if(Debug.debug){
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console.log("[Resizer::_res_antiCssOverride] SOMEBODY TOUCHED MA SPAGHETT (our CSS got overriden, restoring our css)");
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console.log("[Resizer::_res_antiCssOverride] MA SPAGHETT: top:", this.currentCss.top, "left:", this.currentCss.left, "thing that touched ma spaghett", styleArrayStr);
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}
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_res_restore();
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return;
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}
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stuffChecked++;
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}
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else if(styleArray[i].startsWith("left:")){
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// don't force css restore if currentCss.left is not defined
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if(this.currentCss.left && styleArray[i] != this.currentCss.left){
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if(Debug.debug){
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console.log("[Resizer::_res_antiCssOverride] SOMEBODY TOUCHED MA SPAGHETT (our CSS got overriden, restoring our css)");
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console.log("[Resizer::_res_antiCssOverride] MA SPAGHETT: width:", this.currentCss.width, "height:", this.currentCss.height, "thing that touched ma spaghett", styleArrayStr);
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}
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_res_restore();
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return;
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}
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stuffChecked++;
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}
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if(stuffChecked == stuffToCheck){
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// if(Debug.debug){
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// console.log("[Resizer::_res_antiCssOverride] My spaghett rests untouched. (nobody overrode our CSS, doing nothing)");
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// }
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return;
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}
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}
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}
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}
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}
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