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Instead of No Data, make a more general function that will write any text without clearing the image behind it

This commit is contained in:
Isaac Connor 2017-10-23 10:54:38 -07:00
parent ed9da696b3
commit 681abd64fc
1 changed files with 17 additions and 1 deletions
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18
web/skins/classic/views/js/montagereview.js
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@ -114,6 +114,21 @@ function loadNoData( monId ) {
console.log("No monId in loadNoData");
}
}
function writeText( monId, text ) {
if ( monId ) {
var canvasCtx = monitorCanvasCtx[monId];
var canvasObj = monitorCanvasObj[monId];
//canvasCtx.fillStyle="white";
//canvasCtx.fillRect(0, 0, canvasObj.width, canvasObj.height);
var textSize=canvasObj.width * 0.15;
canvasCtx.font = "600 " + textSize.toString() + "px Arial";
canvasCtx.fillStyle="white";
var textWidth = canvasCtx.measureText(text).width;
canvasCtx.fillText(text,canvasObj.width/2 - textWidth/2,canvasObj.height/2);
} else {
console.log("No monId in loadNoData");
}
}
// Either draws the
function loadImage2Monitor( monId, url ) {
@ -123,8 +138,9 @@ function loadImage2Monitor( monId, url ) {
} else {
if ( monitorImageObject[monId].src == url ) return; // do nothing if it's the same
if ( url == 'no data' ) {
loadNoData( monId );
writeText(monId, 'No Data');
} else {
writeText(monId, 'Loading...');
monitorLoading[monId] = true;
monitorLoadStartTimems[monId] = new Date().getTime();
monitorImageObject[monId].src = url; // starts a load but doesn't refresh yet, wait until ready