60 lines
2.0 KiB
JavaScript
60 lines
2.0 KiB
JavaScript
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(function () {
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// save these original methods before they are overwritten
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var proto_initIcon = L.Marker.prototype._initIcon;
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var proto_setPos = L.Marker.prototype._setPos;
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var oldIE = (L.DomUtil.TRANSFORM === 'msTransform');
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L.Marker.addInitHook(function () {
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var iconOptions = this.options.icon && this.options.icon.options;
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var iconAnchor = iconOptions && this.options.icon.options.iconAnchor;
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if (iconAnchor) {
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iconAnchor = (iconAnchor[0] + 'px ' + iconAnchor[1] + 'px');
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}
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this.options.rotationOrigin = this.options.rotationOrigin || iconAnchor || 'center bottom';
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this.options.rotationAngle = this.options.rotationAngle || 0;
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// Ensure marker keeps rotated during dragging
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this.on('drag', function (e) {
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e.target._applyRotation();
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});
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});
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L.Marker.include({
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_initIcon: function () {
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proto_initIcon.call(this);
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},
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_setPos: function (pos) {
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proto_setPos.call(this, pos);
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this._applyRotation();
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},
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_applyRotation: function () {
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if (this.options.rotationAngle) {
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this._icon.style[L.DomUtil.TRANSFORM + 'Origin'] = this.options.rotationOrigin;
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if (oldIE) {
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// for IE 9, use the 2D rotation
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this._icon.style[L.DomUtil.TRANSFORM] = 'rotate(' + this.options.rotationAngle + 'deg)';
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} else {
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// for modern browsers, prefer the 3D accelerated version
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this._icon.style[L.DomUtil.TRANSFORM] += ' rotateZ(' + this.options.rotationAngle + 'deg)';
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}
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}
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},
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setRotationAngle: function (angle) {
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this.options.rotationAngle = angle;
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this.update();
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return this;
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},
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setRotationOrigin: function (origin) {
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this.options.rotationOrigin = origin;
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this.update();
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return this;
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}
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});
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})();
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