57 lines
2.1 KiB
JavaScript
57 lines
2.1 KiB
JavaScript
BR.OpacitySlider = L.Control.extend({
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options: {
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position: 'topleft',
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callback: function(opacity) {}
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},
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onAdd: function (map) {
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var container = L.DomUtil.create('div', 'leaflet-bar control-slider'),
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input = $('<input id="slider" type="text"/>'),
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item = localStorage.opacitySliderValue,
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value = item ? parseInt(item) : 100,
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minOpacity = (BR.conf.minOpacity || 0) * 100;
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if (value < minOpacity) {
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value = minOpacity;
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}
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var stopClickAfterSlide = function(evt) {
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L.DomEvent.stop(evt);
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removeStopClickListeners();
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};
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var removeStopClickListeners = function() {
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document.removeEventListener('click', stopClickAfterSlide, true);
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document.removeEventListener('mousedown', removeStopClickListeners, true);
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};
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$(container).html(input);
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$(container).attr('title', 'Set transparency of route track and markers');
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input.slider({
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min: 0,
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max: 100,
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step: 1,
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value: value,
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orientation: 'vertical',
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reversed : true,
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selection: 'before', // inverted, serves as track style, see css
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tooltip: 'hide'
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}).on('slide slideStop', { self: this }, function (evt) {
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evt.data.self.options.callback(evt.value / 100);
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}).on('slideStop', function (evt) {
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localStorage.opacitySliderValue = evt.value;
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// When dragging outside slider and over map, click event after mouseup
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// adds marker when active on Chromium. So disable click (not needed)
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// once after sliding.
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document.addEventListener('click', stopClickAfterSlide, true);
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// Firefox does not fire click event in this case, so make sure stop listener
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// is always removed on next mousedown.
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document.addEventListener('mousedown', removeStopClickListeners, true);
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});
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this.options.callback(value / 100);
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return container;
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}
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});
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