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/*++ from bonsai.js ++ urlObj +++++++++++++++++++++++++++++++++++++++++*/
function urlObj(url) {
var urlBaseAndParameters;
urlBaseAndParameters = url.split("?");
this.urlBase = urlBaseAndParameters[0];
this.urlParameters = urlBaseAndParameters[1].split(/[;&]/);
this.getUrlBase = urlObjGetUrlBase;
this.getUrlParameterValue = urlObjGetUrlParameterValue;
}
/*++ from bonsai.js ++ urlObjGetUrlBase +++++++++++++++++++++++++++++++*/
function urlObjGetUrlBase() {
return this.urlBase;
}
/*++ form bonsai.js ++ urlObjGetUrlParameterValue +++++++++++++++++++++*/
function urlObjGetUrlParameterValue(parameter) {
var i;
var fieldAndValue;
var value;
i = 0;
while (this.urlParameters [i] != undefined) {
fieldAndValue = this.urlParameters[i].split("=");
if (fieldAndValue[0] == parameter) {
value = fieldAndValue[1];
}
i++;
}
return value;
}
/*++++++++++++++++++++ isoDateToJS +++++++++++++++++++++++++++++++++++++*/
function ISODateToJS(rawisodate) {
var decode = decodeURIComponent(rawisodate);
if (decode == "now") {
return new Date();
}
else {
var M = decode.match(/(\d\d\d\d)-(\d\d?)-(\d\d?)[+ ](\d\d?):(\d\d?)/)
var date = new Date(M[1], M[2]-1, M[3], M[4], M[5], "00")
return date;
}
}
/*++++++++++++++++++++++ JSToisoDate ++++++++++++++++++++++++++++++++++++++*/
function JSToISODate(mydate) {
var isodate = mydate.getFullYear() + "-";
if ((mydate.getMonth() + 1) < 10) { isodate = isodate + "0"; }
isodate = isodate + (mydate.getMonth() + 1) + "-";
if (mydate.getDate() < 10) { isodate = isodate + "0"; }
isodate = isodate + mydate.getDate() + " ";
if (mydate.getHours() < 10) { isodate = isodate + "0"; }
isodate = isodate + mydate.getHours() + ":";
if (mydate.getMinutes() < 10) { isodate = isodate + "0"; }
isodate = isodate + mydate.getMinutes();
return encodeURI(isodate);
}
// example with minimum dimensions
var myCropper;
// will be started by modified iSelect (StopApply Function)
var StartDateString = 0;
var EndDateString = 0;
function changeRRDImage(coords,dimensions){
var RRDLeftDiff = 50; // difference between left border of RRD image and content
var RRDRightDiff = 30; // difference between right border of RRD image and content
var RRDImgWidth = 697; // Width of the Smokeping RRD Graphik
var RRDImgUsable = 596; // 598 = 697 - 68 - 33;
var mySelectLeft = coords.x1;
var mySelectRight = coords.x2;
if (mySelectLeft == mySelectRight) return; // abort if nothing is selected.
myURLObj = new urlObj(document.URL);
// parse start and stop parameter from URL
var myURL = myURLObj.getUrlBase();
var myRawStartDate = (StartDateString != 0) ? StartDateString : myURLObj.getUrlParameterValue("start");
var myRawStopDate = (EndDateString != 0) ? EndDateString : myURLObj.getUrlParameterValue("end");
var myRawTarget = myURLObj.getUrlParameterValue("target");
var myParsedStartDate = ISODateToJS(myRawStartDate);
var myParsedStartEpoch = Math.floor(myParsedStartDate.getTime()/1000.0);
var myParsedStopDate = ISODateToJS(myRawStopDate);
var myParsedStopEpoch = Math.floor(myParsedStopDate.getTime()/1000.0);
var myParsedDivEpoch = myParsedStopEpoch - myParsedStartEpoch;
var mySerialDate = new Date();
var mySerial = mySerialDate.getTime();
// Generate Selected Range in Unix Timestamps
var genStart = myParsedStartEpoch + (((mySelectLeft - RRDLeftDiff) / RRDImgUsable ) * myParsedDivEpoch);
var genStop = myParsedStartEpoch + (((mySelectRight - RRDLeftDiff) / RRDImgUsable ) * myParsedDivEpoch);
var floorGenStart = Math.floor(genStart);
var floorGenStop = Math.floor(genStop);
var StartDate = new Date(floorGenStart*1000);
var StopDate = new Date(floorGenStop*1000);
// floor to last full minute
var MinuteGenStart = ( Math.floor(floorGenStart / 60) * 60 );
var MinuteGenStop = ( Math.floor(floorGenStop / 60) * 60 );
StartDateString = JSToISODate(StartDate);
EndDateString = JSToISODate(StopDate);
// construct Image URL
$('zoom').src = myURL + "?displaymode=a;start=" + StartDateString+ ";end=" + EndDateString + ";target=" + myRawTarget + ";serial=" + mySerial;
myCropper.setParams();
};
Event.observe(
window,
'load',
function() {
myCropper = new Cropper.Img(
'zoom',
{
minHeight: 321,
maxHeight: 321,
onEndCrop: changeRRDImage
}
)
}
);
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