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Implement getElement, setScale in MonitorStream.js

This commit is contained in:
Isaac Connor 2021-11-10 14:20:19 -05:00
parent 4c2d50c1f4
commit 474f65cff3
1 changed files with 63 additions and 12 deletions
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73
web/js/MonitorStream.js
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@ -3,8 +3,10 @@ function MonitorStream(monitorData) {
this.id = monitorData.id;
this.connKey = monitorData.connKey;
this.url = monitorData.url;
this.url_to_zms = monitorData.url_to_zms;
this.width = monitorData.width;
this.height = monitorData.height;
this.scale = 100;
this.status = null;
this.alarmState = STATE_IDLE;
this.lastAlarmState = STATE_IDLE;
@ -15,18 +17,67 @@ function MonitorStream(monitorData) {
};
this.type = monitorData.type;
this.refresh = monitorData.refresh;
this.element = null;
this.getElement = function() {
if (this.element) return this.element;
this.element = document.getElementById('liveStream'+this.id);
if (!this.element) {
console.error("No img for #liveStream"+this.id);
}
return this.element;
};
/* if the img element didn't have a src, this would fill it in, causing it to show. */
this.show = function() {
const stream = this.getElement();
if (!stream.src) {
stream.src = this.url_to_zms+"&mode=single&scale=100&connkey="+this.connKey;
}
};
this.setScale = function(newscale) {
const img = this.getElement();
if (!img) return;
this.scale = newscale;
const oldSrc = img.getAttribute('src');
let newSrc = '';
img.setAttribute('src', '');
console.log("Scaling to: " + newscale);
if (newscale == '0' || newscale == 'auto') {
let bottomElement = document.getElementById('replayStatus');
if (!bottomElement) {
bottomElement = document.getElementById('monitorState');
}
var newSize = scaleToFit(this.width, this.height, $j(img), $j(bottomElement));
console.log(newSize);
newWidth = newSize.width;
newHeight = newSize.height;
autoScale = parseInt(newSize.autoScale);
// This is so that we don't waste bandwidth and let the browser do all the scaling.
if (autoScale > 100) autoScale = 100;
if (autoScale) {
newSrc = oldSrc.replace(/scale=\d+/i, 'scale='+autoScale);
}
} else {
newWidth = this.width * newscale / SCALE_BASE;
newHeight = this.height * newscale / SCALE_BASE;
img.width(newWidth);
img.height(newHeight);
if (newscale > 100) newscale = 100;
newSrc = oldSrc.replace(/scale=\d+/i, 'scale='+newscale);
}
img.setAttribute('src', newSrc);
};
this.start = function(delay) {
// Step 1 make sure we are streaming instead of a static image
var stream = $j('#liveStream'+this.id);
if (!stream.length) {
console.log('No live stream');
return;
}
stream = stream[0];
if ( !stream ) {
console.log('No live stream');
return;
}
const stream = this.getElement();
if (!stream) return;
if (!stream.src) {
// Website Monitors won't have an img tag
console.log('No src for #liveStream'+this.id);
@ -38,7 +89,7 @@ function MonitorStream(monitorData) {
src += '&connkey='+this.connKey;
}
if ( stream.src != src ) {
console.log("Setting to streaming");
console.log("Setting to streaming: " + src);
stream.src = '';
stream.src = src;
}