142 lines
3.8 KiB
JavaScript
142 lines
3.8 KiB
JavaScript
// FIXME works for View2D only
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goog.provide('ol.control.Rotate');
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goog.require('goog.asserts');
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goog.require('goog.dom');
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goog.require('goog.dom.TagName');
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goog.require('goog.events');
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goog.require('goog.events.EventType');
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goog.require('ol.View2D');
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goog.require('ol.animation');
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goog.require('ol.control.Control');
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goog.require('ol.css');
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goog.require('ol.easing');
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goog.require('ol.pointer.PointerEventHandler');
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/**
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* @classdesc
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* A button control to reset rotation to 0.
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* To style this control use css selector `.ol-rotate`.
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*
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* @constructor
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* @extends {ol.control.Control}
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* @param {olx.control.RotateOptions=} opt_options Rotate options.
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* @todo api
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*/
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ol.control.Rotate = function(opt_options) {
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var options = goog.isDef(opt_options) ? opt_options : {};
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var className = goog.isDef(options.className) ?
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options.className : 'ol-rotate';
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var label = goog.dom.createDom(goog.dom.TagName.SPAN,
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{ 'class': 'ol-compass' },
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goog.isDef(options.label) ? options.label : '\u21E7');
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this.label_ = label;
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var tipLabel = goog.isDef(options.tipLabel) ?
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options.tipLabel : 'Reset rotation';
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var tip = goog.dom.createDom(goog.dom.TagName.SPAN, {
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'role' : 'tooltip'
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}, tipLabel);
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var button = goog.dom.createDom(goog.dom.TagName.BUTTON, {
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'class': className + '-reset ol-has-tooltip',
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'name' : 'ResetRotation',
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'type' : 'button'
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}, tip, label);
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var handler = new ol.pointer.PointerEventHandler(button);
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this.registerDisposable(handler);
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goog.events.listen(handler, ol.pointer.EventType.POINTERUP,
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ol.control.Rotate.prototype.resetNorth_, false, this);
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goog.events.listen(button, [
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goog.events.EventType.MOUSEOUT,
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goog.events.EventType.FOCUSOUT
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], function() {
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this.blur();
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}, false);
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var cssClasses = className + ' ' + ol.css.CLASS_UNSELECTABLE + ' ' +
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ol.css.CLASS_CONTROL;
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var element = goog.dom.createDom(goog.dom.TagName.DIV, cssClasses, button);
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goog.base(this, {
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element: element,
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target: options.target
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});
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/**
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* @type {number}
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* @private
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*/
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this.duration_ = goog.isDef(options.duration) ? options.duration : 250;
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/**
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* @type {boolean}
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* @private
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*/
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this.autoHide_ = goog.isDef(options.autoHide) ? options.autoHide : true;
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element.style.opacity = (this.autoHide_) ? 0 : 1;
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};
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goog.inherits(ol.control.Rotate, ol.control.Control);
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/**
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* @param {ol.pointer.PointerEvent} pointerEvent The pointer event to handle.
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* @private
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*/
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ol.control.Rotate.prototype.resetNorth_ = function(pointerEvent) {
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pointerEvent.browserEvent.preventDefault();
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// prevent the anchor from getting appended to the url
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var map = this.getMap();
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// FIXME works for View2D only
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var view = map.getView();
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goog.asserts.assert(goog.isDef(view));
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var view2D = view.getView2D();
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goog.asserts.assertInstanceof(view2D, ol.View2D);
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var currentRotation = view2D.getRotation();
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while (currentRotation < -Math.PI) {
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currentRotation += 2 * Math.PI;
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}
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while (currentRotation > Math.PI) {
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currentRotation -= 2 * Math.PI;
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}
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if (goog.isDef(currentRotation)) {
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if (this.duration_ > 0) {
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map.beforeRender(ol.animation.rotate({
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rotation: currentRotation,
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duration: this.duration_,
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easing: ol.easing.easeOut
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}));
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}
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view2D.setRotation(0);
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}
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};
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/**
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* @inheritDoc
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*/
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ol.control.Rotate.prototype.handleMapPostrender = function(mapEvent) {
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var frameState = mapEvent.frameState;
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if (goog.isNull(frameState)) {
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return;
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}
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var rotation = frameState.view2DState.rotation;
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var transform = 'rotate(' + rotation * 360 / (Math.PI * 2) + 'deg)';
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if (this.autoHide_) {
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this.element.style.opacity = (rotation === 0) ? 0 : 1;
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}
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this.label_.style.msTransform = transform;
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this.label_.style.webkitTransform = transform;
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this.label_.style.transform = transform;
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};
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