I am searching for a possibility to temporarily disable the zooming functionality provided by the d3 library. I tried to save the cave the current scale/translation values when the zooming is deactivated and set the zoom/translate-values when the zooming is active again. Unfortunately this will not work.
Here is a code example I created :
var savedTranslation = null;
var savedScale = null;
var body = d3.select("body");
var svg = body.append("svg");
var svgContainer = svg.append("svg:g");
var circle = svgContainer.append("svg:circle")
.attr('cx', 100)
.attr('cy', 100)
.attr('r',30)
.attr('fill', 'red');
circle.on('click', clickFn);
function clickFn(){
if (circle.attr('fill') === 'red'){
circle.attr('fill','blue')
}
else if (circle.attr('fill') === 'blue'){
circle.attr('fill','red')
}
};
svg.call(zoom = d3.behavior.zoom().on('zoom', redrawOnZoom)).on('dblclick.zoom', null);
function redrawOnZoom(){
if (circle.attr('fill') === 'red'){
if (savedScale !== null){
zoom.scale(savedScale)
savedScale = null
}
if (savedTranslation !== null){
zoom.translate(savedTranslation)
savedTranslation = null
}
// the actual "zooming"
svgContainer.attr('transform', 'translate(' + d3.event.translate + ')' + ' scale(' + d3.event.scale + ')');
}
else {
// save the current scales
savedScale = zoom.scale()
savedTranslation = zoom.translate()
}
};
Here is a working jsfiddle example.
EDIT:
The false behavior can be reproduced by following steps :