phpmyadmin/js/tbl_zoom_plot.js
Gemorroj 8bdca339f6 Better compatibility with newer versions of jQuery.
Method of "attr" changed to "prop", method of "removeAttr" changed to "removeProp", attr("value" is replaced by the method of "val".
2012-04-07 14:27:28 +03:00

879 lines
33 KiB
JavaScript

/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
** @fileoverview JavaScript functions used on tbl_select.php
**
** @requires jQuery
** @requires js/functions.js
**/
/**
** Display Help/Info
**/
function displayHelp() {
var msgbox = PMA_ajaxShowMessage(PMA_messages['strDisplayHelp'], 10000);
msgbox.click(function() {
PMA_ajaxRemoveMessage(msgbox);
});
}
/**
** Extend the array object for max function
** @param array
**/
Array.max = function (array) {
return Math.max.apply( Math, array );
};
/**
** Extend the array object for min function
** @param array
**/
Array.min = function (array) {
return Math.min.apply( Math, array );
};
/**
** Checks if a string contains only numeric value
** @param n: String (to be checked)
**/
function isNumeric(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
/**
** Checks if an object is empty
** @param n: Object (to be checked)
**/
function isEmpty(obj) {
var name;
for (name in obj) {
return false;
}
return true;
}
/**
** Converts a timestamp into the format of its field type
** @param val Integer Timestamp
** @param type String Field type(datetime/timestamp/time/date)
**/
function getDate(val, type) {
if (type.toString().search(/datetime/i) != -1 || type.toString().search(/timestamp/i) != -1) {
return Highcharts.dateFormat('%Y-%m-%e %H:%M:%S', val);
}
else if (type.toString().search(/time/i) != -1) {
return Highcharts.dateFormat('%H:%M:%S', val);
}
else if (type.toString().search(/date/i) != -1) {
return Highcharts.dateFormat('%Y-%m-%e', val);
}
}
/**
** Converts a date/time into timestamp
** @param val String Date
** @param type Sring Field type(datetime/timestamp/time/date)
**/
function getTimeStamp(val, type) {
if (type.toString().search(/datetime/i) != -1 || type.toString().search(/timestamp/i) != -1) {
return getDateFromFormat(val, 'yyyy-MM-dd HH:mm:ss', val);
}
else if (type.toString().search(/time/i) != -1) {
return getDateFromFormat('1970-01-01 ' + val, 'yyyy-MM-dd HH:mm:ss');
}
else if (type.toString().search(/date/i) != -1) {
return getDateFromFormat(val, 'yyyy-MM-dd');
}
}
/**
** Classifies the field type into numeric,timeseries or text
** @param field: field type (as in database structure)
**/
function getType(field) {
if (field.toString().search(/int/i) != -1 || field.toString().search(/decimal/i) != -1
|| field.toString().search(/year/i) != -1) {
return 'numeric';
} else if (field.toString().search(/time/i) != -1 || field.toString().search(/date/i) != -1) {
return 'time';
} else {
return 'text';
}
}
/**
** Converts a categorical array into numeric array
** @param array categorical values array
**/
function getCord(arr) {
var newCord = new Array();
var original = $.extend(true, [], arr);
var arr = jQuery.unique(arr).sort();
$.each(original, function(index, value) {
newCord.push(jQuery.inArray(value, arr));
});
return [newCord, arr, original];
}
/**
** Scrolls the view to the display section
**/
function scrollToChart() {
var x = $('#dataDisplay').offset().top - 100; // 100 provides buffer in viewport
$('html,body').animate({scrollTop: x}, 500);
}
/**
** Handlers for panning feature
**/
function includePan(currentChart) {
var mouseDown;
var lastX;
var lastY;
var chartWidth = $('#resizer').width() - 3;
var chartHeight = $('#resizer').height() - 20;
$('#querychart').mousedown(function() {
mouseDown = 1;
});
$('#querychart').mouseup(function() {
mouseDown = 0;
});
$('#querychart').mousemove(function(e) {
if (mouseDown == 1) {
if (e.pageX > lastX) {
var xExtremes = currentChart.xAxis[0].getExtremes();
var diff = (e.pageX - lastX) * (xExtremes.max - xExtremes.min) / chartWidth;
currentChart.xAxis[0].setExtremes(xExtremes.min - diff, xExtremes.max - diff);
} else if (e.pageX < lastX) {
var xExtremes = currentChart.xAxis[0].getExtremes();
var diff = (lastX - e.pageX) * (xExtremes.max - xExtremes.min) / chartWidth;
currentChart.xAxis[0].setExtremes(xExtremes.min + diff, xExtremes.max + diff);
}
if (e.pageY > lastY) {
var yExtremes = currentChart.yAxis[0].getExtremes();
var ydiff = 1.0 * (e.pageY - lastY) * (yExtremes.max - yExtremes.min) / chartHeight;
currentChart.yAxis[0].setExtremes(yExtremes.min + ydiff, yExtremes.max + ydiff);
} else if (e.pageY < lastY) {
var yExtremes = currentChart.yAxis[0].getExtremes();
var ydiff = 1.0 * (lastY - e.pageY) * (yExtremes.max - yExtremes.min) / chartHeight;
currentChart.yAxis[0].setExtremes(yExtremes.min - ydiff, yExtremes.max - ydiff);
}
}
lastX = e.pageX;
lastY = e.pageY;
});
}
$(document).ready(function() {
var cursorMode = ($("input[name='mode']:checked").val() == 'edit') ? 'crosshair' : 'pointer';
var currentChart = null;
var currentData = null;
var xLabel = $('#tableid_0').val();
var yLabel = $('#tableid_1').val();
var xType = $('#types_0').val();
var yType = $('#types_1').val();
var dataLabel = $('#dataLabel').val();
var lastX;
var lastY;
var zoomRatio = 1;
// Get query result
var data = jQuery.parseJSON($('#querydata').html());
/**
** Input form submit on field change
**/
$('#tableid_0').change(function() {
//AJAX request for field type, collation, operators, and value field
$.post('tbl_zoom_select.php',{
'ajax_request' : true,
'change_tbl_info' : true,
'db' : window.parent.db,
'table' : window.parent.table,
'field' : $('#tableid_0').val(),
'it' : 0,
'token' : window.parent.token
},function(data) {
$('#tableFieldsId tr:eq(1) td:eq(0)').html(data.field_type);
$('#tableFieldsId tr:eq(1) td:eq(1)').html(data.field_collation);
$('#tableFieldsId tr:eq(1) td:eq(2)').html(data.field_operators);
$('#tableFieldsId tr:eq(1) td:eq(3)').html(data.field_value);
xLabel = $('#tableid_0').val();
$('#types_0').val(data.field_type);
$('#collations_0').val(data.field_collations);
});
});
$('#tableid_1').change(function() {
//AJAX request for field type, collation, operators, and value field
$.post('tbl_zoom_select.php',{
'ajax_request' : true,
'change_tbl_info' : true,
'db' : window.parent.db,
'table' : window.parent.table,
'field' : $('#tableid_1').val(),
'it' : 1,
'token' : window.parent.token
},function(data) {
$('#tableFieldsId tr:eq(3) td:eq(0)').html(data.field_type);
$('#tableFieldsId tr:eq(3) td:eq(1)').html(data.field_collation);
$('#tableFieldsId tr:eq(3) td:eq(2)').html(data.field_operators);
$('#tableFieldsId tr:eq(3) td:eq(3)').html(data.field_value);
yLabel = $('#tableid_1').val();
$('#types_1').val(data.field_type);
$('#collations_1').val(data.field_collations);
});
});
$('#tableid_2').change(function() {
//AJAX request for field type, collation, operators, and value field
$.post('tbl_zoom_select.php',{
'ajax_request' : true,
'change_tbl_info' : true,
'db' : window.parent.db,
'table' : window.parent.table,
'field' : $('#tableid_2').val(),
'it' : 2,
'token' : window.parent.token
},function(data) {
$('#tableFieldsId tr:eq(6) td:eq(0)').html(data.field_type);
$('#tableFieldsId tr:eq(6) td:eq(1)').html(data.field_collation);
$('#tableFieldsId tr:eq(6) td:eq(2)').html(data.field_operators);
$('#tableFieldsId tr:eq(6) td:eq(3)').html(data.field_value);
$('#types_2').val(data.field_type);
$('#collations_2').val(data.field_collations);
});
});
$('#tableid_3').change(function() {
//AJAX request for field type, collation, operators, and value field
$.post('tbl_zoom_select.php',{
'ajax_request' : true,
'change_tbl_info' : true,
'db' : window.parent.db,
'table' : window.parent.table,
'field' : $('#tableid_3').val(),
'it' : 3,
'token' : window.parent.token
},function(data) {
$('#tableFieldsId tr:eq(8) td:eq(0)').html(data.field_type);
$('#tableFieldsId tr:eq(8) td:eq(1)').html(data.field_collation);
$('#tableFieldsId tr:eq(8) td:eq(2)').html(data.field_operators);
$('#tableFieldsId tr:eq(8) td:eq(3)').html(data.field_value);
$('#types_3').val(data.field_type);
$('#collations_3').val(data.field_collations);
});
});
/**
* Input form validation
**/
$('#inputFormSubmitId').click(function() {
if ($('#tableid_0').get(0).selectedIndex == 0 || $('#tableid_1').get(0).selectedIndex == 0) {
PMA_ajaxShowMessage(PMA_messages['strInputNull']);
} else if (xLabel == yLabel) {
PMA_ajaxShowMessage(PMA_messages['strSameInputs']);
}
});
/**
** Prepare a div containing a link, otherwise it's incorrectly displayed
** after a couple of clicks
**/
$('<div id="togglesearchformdiv"><a id="togglesearchformlink"></a></div>')
.insertAfter('#zoom_search_form')
// don't show it until we have results on-screen
.hide();
$('#togglesearchformlink')
.html(PMA_messages['strShowSearchCriteria'])
.bind('click', function() {
var $link = $(this);
$('#zoom_search_form').slideToggle();
if ($link.text() == PMA_messages['strHideSearchCriteria']) {
$link.text(PMA_messages['strShowSearchCriteria']);
} else {
$link.text(PMA_messages['strHideSearchCriteria']);
}
// avoid default click action
return false;
});
/**
** Set dialog properties for the data display form
**/
var buttonOptions = {};
/*
* Handle saving of a row in the editor
*/
buttonOptions[PMA_messages['strSave']] = function () {
//Find changed values by comparing form values with selectedRow Object
var newValues = new Object();//Stores the values changed from original
var sqlTypes = new Object();
var it = 4;
var xChange = false;
var yChange = false;
for (key in selectedRow) {
var oldVal = selectedRow[key];
var newVal = ($('#fields_null_id_' + it).prop('checked')) ? null : $('#fieldID_' + it).val();
if (newVal instanceof Array) { // when the column is of type SET
newVal = $('#fieldID_' + it).map(function(){
return $(this).val();
}).get().join(",");
}
if (oldVal != newVal) {
selectedRow[key] = newVal;
newValues[key] = newVal;
if (key == xLabel) {
xChange = true;
data[currentData][xLabel] = newVal;
} else if (key == yLabel) {
yChange = true;
data[currentData][yLabel] = newVal;
}
}
var $input = $('#fieldID_' + it);
if ($input.hasClass('bit')) {
sqlTypes[key] = 'bit';
}
it++;
} //End data update
//Update the chart series and replot
if (xChange || yChange) {
var newSeries = new Array();
newSeries[0] = new Object();
newSeries[0].marker = {
symbol: 'circle'
};
//Logic similar to plot generation, replot only if xAxis changes or yAxis changes.
//Code includes a lot of checks so as to replot only when necessary
if (xChange) {
xCord[currentData] = selectedRow[xLabel];
if (xType == 'numeric') {
currentChart.series[0].data[currentData].update({ x : selectedRow[xLabel] });
currentChart.xAxis[0].setExtremes(Array.min(xCord) - 6, Array.max(xCord) + 6);
} else if (xType == 'time') {
currentChart.series[0].data[currentData].update({
x : getTimeStamp(selectedRow[xLabel], $('#types_0').val())
});
} else {
var tempX = getCord(xCord);
var tempY = getCord(yCord);
var i = 0;
newSeries[0].data = new Array();
xCord = tempX[2];
yCord = tempY[2];
$.each(data, function(key, value) {
if (yType != 'text') {
newSeries[0].data.push({
name: value[dataLabel],
x: tempX[0][i],
y: value[yLabel],
marker: {fillColor: colorCodes[i % 8]},
id: i
});
} else {
newSeries[0].data.push({
name: value[dataLabel],
x: tempX[0][i],
y: tempY[0][i],
marker: {fillColor: colorCodes[i % 8]},
id: i
});
}
i++;
});
currentSettings.xAxis.labels = {
formatter : function() {
if (tempX[1][this.value] && tempX[1][this.value].length > 10) {
return tempX[1][this.value].substring(0, 10);
} else {
return tempX[1][this.value];
}
}
};
currentSettings.series = newSeries;
currentChart = PMA_createChart(currentSettings);
}
}
if (yChange) {
yCord[currentData] = selectedRow[yLabel];
if (yType == 'numeric') {
currentChart.series[0].data[currentData].update({ y : selectedRow[yLabel] });
currentChart.yAxis[0].setExtremes(Array.min(yCord) - 6, Array.max(yCord) + 6);
} else if (yType == 'time') {
currentChart.series[0].data[currentData].update({
y : getTimeStamp(selectedRow[yLabel], $('#types_1').val())
});
} else {
var tempX = getCord(xCord);
var tempY = getCord(yCord);
var i = 0;
newSeries[0].data = new Array();
xCord = tempX[2];
yCord = tempY[2];
$.each(data, function(key, value) {
if (xType != 'text' ) {
newSeries[0].data.push({
name: value[dataLabel],
x: value[xLabel],
y: tempY[0][i],
marker: {fillColor: colorCodes[i % 8]},
id: i
});
} else {
newSeries[0].data.push({
name: value[dataLabel],
x: tempX[0][i],
y: tempY[0][i],
marker: {fillColor: colorCodes[i % 8]},
id: i
});
}
i++;
});
currentSettings.yAxis.labels = {
formatter : function() {
if (tempY[1][this.value] && tempY[1][this.value].length > 10) {
return tempY[1][this.value].substring(0, 10);
} else {
return tempY[1][this.value];
}
}
};
currentSettings.series = newSeries;
currentChart = PMA_createChart(currentSettings);
}
}
currentChart.series[0].data[currentData].select();
} //End plot update
//Generate SQL query for update
if (!isEmpty(newValues)) {
var sql_query = 'UPDATE `' + window.parent.table + '` SET ';
for (key in newValues) {
sql_query += '`' + key + '`=' ;
var value = newValues[key];
// null
if (value == null) {
sql_query += 'NULL, ';
// empty
} else if ($.trim(value) == '') {
sql_query += "'', ";
// other
} else {
// type explicitly identified
if (sqlTypes[key] != null) {
if (sqlTypes[key] == 'bit') {
sql_query += "b'" + value + "', ";
}
// type not explicitly identified
} else {
if (!isNumeric(value)) {
sql_query += "'" + value + "', ";
} else {
sql_query += value + ', ';
}
}
}
}
sql_query = sql_query.substring(0, sql_query.length - 2);
sql_query += ' WHERE ' + PMA_urldecode(data[currentData]['where_clause']);
//Post SQL query to sql.php
$.post('sql.php', {
'token' : window.parent.token,
'db' : window.parent.db,
'ajax_request' : true,
'sql_query' : sql_query,
'inline_edit' : false
}, function(data) {
if (data.success == true) {
$('#sqlqueryresults').html(data.sql_query);
$("#sqlqueryresults").trigger('appendAnchor');
} else {
PMA_ajaxShowMessage(data.error, false);
}
}); //End $.post
}//End database update
$("#dataDisplay").dialog('close');
};
buttonOptions[PMA_messages['strCancel']] = function () {
$(this).dialog('close');
};
$("#dataDisplay").dialog({
autoOpen: false,
title: PMA_messages['strDataPointContent'],
modal: true,
buttons: buttonOptions,
width: $('#dataDisplay').width() + 80,
open: function () {
$(this).find('input[type=checkbox]').css('margin', '0.5em');
}
});
/**
* Attach Ajax event handlers for input fields
* in the dialog. Used to submit the Ajax
* request when the ENTER key is pressed.
*/
$("#dataDisplay").find(':input').live('keydown', function (e) {
if (e.which === 13) { // 13 is the ENTER key
e.preventDefault();
if (typeof buttonOptions[PMA_messages['strSave']] === 'function') {
buttonOptions[PMA_messages['strSave']].call();
}
}
});
/*
* Generate plot using Highcharts
*/
if (data != null) {
$('#zoom_search_form')
.slideToggle()
.hide();
$('#togglesearchformlink')
.text(PMA_messages['strShowSearchCriteria']);
$('#togglesearchformdiv').show();
var selectedRow;
var colorCodes = ['#FF0000', '#00FFFF', '#0000FF', '#0000A0', '#FF0080', '#800080', '#FFFF00', '#00FF00', '#FF00FF'];
var series = new Array();
var xCord = new Array();
var yCord = new Array();
var tempX, tempY;
var it = 0;
var xMax; // xAxis extreme max
var xMin; // xAxis extreme min
var yMax; // yAxis extreme max
var yMin; // yAxis extreme min
// Set the basic plot settings
var currentSettings = {
chart: {
renderTo: 'querychart',
type: 'scatter',
//zoomType: 'xy',
width:$('#resizer').width() - 3,
height:$('#resizer').height() - 20
},
credits: {
enabled: false
},
exporting: { enabled: false },
label: { text: $('#dataLabel').val() },
plotOptions: {
series: {
allowPointSelect: true,
cursor: 'pointer',
showInLegend: false,
dataLabels: {
enabled: false
},
point: {
events: {
click: function() {
var id = this.id;
var fid = 4;
currentData = id;
// Make AJAX request to tbl_zoom_select.php for getting the complete row info
var post_params = {
'ajax_request' : true,
'get_data_row' : true,
'db' : window.parent.db,
'table' : window.parent.table,
'where_clause' : data[id]['where_clause'],
'token' : window.parent.token
};
$.post('tbl_zoom_select.php', post_params, function(data) {
// Row is contained in data.row_info, now fill the displayResultForm with row values
for (key in data.row_info) {
$field = $('#fieldID_' + fid);
$field_null = $('#fields_null_id_' + fid);
if (data.row_info[key] == null) {
$field_null.prop('checked', true);
$field.val('');
} else {
$field_null.prop('checked', false);
if ($field.prop('multiple')) { // when the column is of type SET
$field.val(data.row_info[key].split(','));
} else {
$field.val(data.row_info[key]);
}
}
fid++;
}
selectedRow = new Object();
selectedRow = data.row_info;
});
$("#dataDisplay").dialog("open");
}
}
}
}
},
tooltip: {
formatter: function() {
return this.point.name;
}
},
title: { text: PMA_messages['strQueryResults'] },
xAxis: {
title: { text: $('#tableid_0').val() },
events: {
setExtremes: function(e) {
this.resetZoom.show();
}
}
},
yAxis: {
min: null,
title: { text: $('#tableid_1').val() },
endOnTick: false,
startOnTick: false,
events: {
setExtremes: function(e) {
this.resetZoom.show();
}
}
}
};
// If data label is not set, do not show tooltips
if (dataLabel == '') {
currentSettings.tooltip.enabled = false;
}
$('#resizer').resizable({
resize: function() {
currentChart.setSize(
this.offsetWidth - 3,
this.offsetHeight - 20,
false
);
}
});
// Classify types as either numeric,time,text
xType = getType(xType);
yType = getType(yType);
//Set the axis type based on the field
currentSettings.xAxis.type = (xType == 'time') ? 'datetime' : 'linear';
currentSettings.yAxis.type = (yType == 'time') ? 'datetime' : 'linear';
// Formulate series data for plot
series[0] = new Object();
series[0].data = new Array();
series[0].marker = {
symbol: 'circle'
};
if (xType != 'text' && yType != 'text') {
$.each(data, function(key, value) {
var xVal = (xType == 'numeric') ? value[xLabel] : getTimeStamp(value[xLabel], $('#types_0').val());
var yVal = (yType == 'numeric') ? value[yLabel] : getTimeStamp(value[yLabel], $('#types_1').val());
series[0].data.push({
name: value[dataLabel],
x: xVal,
y: yVal,
marker: {fillColor: colorCodes[it % 8]},
id: it
});
xCord.push(value[xLabel]);
yCord.push(value[yLabel]);
it++;
});
if (xType == 'numeric') {
currentSettings.xAxis.max = Array.max(xCord) + 6;
currentSettings.xAxis.min = Array.min(xCord) - 6;
} else {
currentSettings.xAxis.labels = { formatter : function() {
return getDate(this.value, $('#types_0').val());
}};
}
if (yType == 'numeric') {
currentSettings.yAxis.max = Array.max(yCord) + 6;
currentSettings.yAxis.min = Array.min(yCord) - 6;
} else {
currentSettings.yAxis.labels = { formatter : function() {
return getDate(this.value, $('#types_1').val());
}};
}
} else if (xType == 'text' && yType != 'text') {
$.each(data, function(key, value) {
xCord.push(value[xLabel]);
yCord.push(value[yLabel]);
});
tempX = getCord(xCord);
$.each(data, function(key, value) {
var yVal = (yType == 'numeric') ? value[yLabel] : getTimeStamp(value[yLabel], $('#types_1').val());
series[0].data.push({
name: value[dataLabel],
x: tempX[0][it],
y: yVal,
marker: {fillColor: colorCodes[it % 8]},
id: it
});
it++;
});
currentSettings.xAxis.labels = {
formatter : function() {
if (tempX[1][this.value] && tempX[1][this.value].length > 10) {
return tempX[1][this.value].substring(0, 10);
} else {
return tempX[1][this.value];
}
}
};
if (yType == 'numeric') {
currentSettings.yAxis.max = Array.max(yCord) + 6;
currentSettings.yAxis.min = Array.min(yCord) - 6;
} else {
currentSettings.yAxis.labels = {
formatter : function() {
return getDate(this.value, $('#types_1').val());
}
};
}
xCord = tempX[2];
} else if (xType != 'text' && yType == 'text') {
$.each(data, function(key, value) {
xCord.push(value[xLabel]);
yCord.push(value[yLabel]);
});
tempY = getCord(yCord);
$.each(data, function(key, value) {
var xVal = (xType == 'numeric') ? value[xLabel] : getTimeStamp(value[xLabel], $('#types_0').val());
series[0].data.push({
name: value[dataLabel],
y: tempY[0][it],
x: xVal,
marker: {fillColor: colorCodes[it % 8]},
id: it
});
it++;
});
if (xType == 'numeric') {
currentSettings.xAxis.max = Array.max(xCord) + 6;
currentSettings.xAxis.min = Array.min(xCord) - 6;
} else {
currentSettings.xAxis.labels = {
formatter : function() {
return getDate(this.value, $('#types_0').val());
}
};
}
currentSettings.yAxis.labels = {
formatter : function() {
if (tempY[1][this.value] && tempY[1][this.value].length > 10) {
return tempY[1][this.value].substring(0, 10);
} else {
return tempY[1][this.value];
}
}
};
yCord = tempY[2];
} else if (xType == 'text' && yType == 'text') {
$.each(data, function(key, value) {
xCord.push(value[xLabel]);
yCord.push(value[yLabel]);
});
tempX = getCord(xCord);
tempY = getCord(yCord);
$.each(data, function(key, value) {
series[0].data.push({
name: value[dataLabel],
x: tempX[0][it],
y: tempY[0][it],
marker: {fillColor: colorCodes[it % 8]},
id: it
});
it++;
});
currentSettings.xAxis.labels = {
formatter : function() {
if (tempX[1][this.value] && tempX[1][this.value].length > 10) {
return tempX[1][this.value].substring(0, 10);
} else {
return tempX[1][this.value];
}
}
};
currentSettings.yAxis.labels = {
formatter : function() {
if (tempY[1][this.value] && tempY[1][this.value].length > 10) {
return tempY[1][this.value].substring(0, 10);
} else {
return tempY[1][this.value];
}
}
};
xCord = tempX[2];
yCord = tempY[2];
}
currentSettings.series = series;
currentChart = PMA_createChart(currentSettings);
xMin = currentChart.xAxis[0].getExtremes().min;
xMax = currentChart.xAxis[0].getExtremes().max;
yMin = currentChart.yAxis[0].getExtremes().min;
yMax = currentChart.yAxis[0].getExtremes().max;
includePan(currentChart); //Enable panning feature
var setZoom = function() {
var newxm = xMin + (xMax - xMin) * (1 - zoomRatio) / 2;
var newxM = xMax - (xMax - xMin) * (1 - zoomRatio) / 2;
var newym = yMin + (yMax - yMin) * (1 - zoomRatio) / 2;
var newyM = yMax - (yMax - yMin) * (1 - zoomRatio) / 2;
currentChart.xAxis[0].setExtremes(newxm, newxM);
currentChart.yAxis[0].setExtremes(newym, newyM);
};
//Enable zoom feature
$("#querychart").mousewheel(function(objEvent, intDelta) {
if (intDelta > 0) {
if (zoomRatio > 0.1) {
zoomRatio = zoomRatio - 0.1;
setZoom();
}
} else if (intDelta < 0) {
zoomRatio = zoomRatio + 0.1;
setZoom();
}
});
//Add reset zoom feature
currentChart.yAxis[0].resetZoom = currentChart.xAxis[0].resetZoom = $('<a href="#">Reset zoom</a>')
.appendTo(currentChart.container)
.css({
position: 'absolute',
top: 10,
right: 20,
display: 'none'
})
.click(function() {
currentChart.xAxis[0].setExtremes(null, null);
currentChart.yAxis[0].setExtremes(null, null);
this.style.display = 'none';
});
scrollToChart();
}
});