761aa0ea5c
It was a workaround added in #1761 to hide the button tooltip on OSX / Chrome 32 and 33. Because we're not using the tooltips anymore (see #2781) and this version of chrome is deprecated this workaround can be removed.
126 lines
3.4 KiB
JavaScript
126 lines
3.4 KiB
JavaScript
goog.provide('ol.control.Zoom');
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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.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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/**
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* @classdesc
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* A control with 2 buttons, one for zoom in and one for zoom out.
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* This control is one of the default controls of a map. To style this control
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* use css selectors `.ol-zoom-in` and `.ol-zoom-out`.
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*
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* @constructor
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* @extends {ol.control.Control}
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* @param {olx.control.ZoomOptions=} opt_options Zoom options.
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* @api stable
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*/
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ol.control.Zoom = 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) ? options.className : 'ol-zoom';
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var delta = goog.isDef(options.delta) ? options.delta : 1;
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var zoomInLabel = goog.isDef(options.zoomInLabel) ?
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options.zoomInLabel : '+';
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var zoomOutLabel = goog.isDef(options.zoomOutLabel) ?
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options.zoomOutLabel : '\u2212';
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var zoomInTipLabel = goog.isDef(options.zoomInTipLabel) ?
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options.zoomInTipLabel : 'Zoom in';
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var zoomOutTipLabel = goog.isDef(options.zoomOutTipLabel) ?
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options.zoomOutTipLabel : 'Zoom out';
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var inElement = goog.dom.createDom(goog.dom.TagName.BUTTON, {
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'class': className + '-in',
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'type' : 'button',
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'title': zoomInTipLabel
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}, zoomInLabel);
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goog.events.listen(inElement,
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goog.events.EventType.CLICK, goog.partial(
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ol.control.Zoom.prototype.handleClick_, delta), false, this);
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var outElement = goog.dom.createDom(goog.dom.TagName.BUTTON, {
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'class': className + '-out',
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'type' : 'button',
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'title': zoomOutTipLabel
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}, zoomOutLabel);
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goog.events.listen(outElement,
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goog.events.EventType.CLICK, goog.partial(
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ol.control.Zoom.prototype.handleClick_, -delta), false, this);
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goog.events.listen(outElement, [
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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, inElement,
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outElement);
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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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goog.inherits(ol.control.Zoom, ol.control.Control);
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/**
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* @param {number} delta Zoom delta.
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* @param {goog.events.BrowserEvent} event The event to handle
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* @private
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*/
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ol.control.Zoom.prototype.handleClick_ = function(delta, event) {
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event.preventDefault();
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this.zoomByDelta_(delta);
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};
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/**
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* @param {number} delta Zoom delta.
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* @private
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*/
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ol.control.Zoom.prototype.zoomByDelta_ = function(delta) {
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var map = this.getMap();
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var view = map.getView();
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if (goog.isNull(view)) {
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// the map does not have a view, so we can't act
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// upon it
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return;
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}
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var currentResolution = view.getResolution();
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if (goog.isDef(currentResolution)) {
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if (this.duration_ > 0) {
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map.beforeRender(ol.animation.zoom({
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resolution: currentResolution,
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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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var newResolution = view.constrainResolution(currentResolution, delta);
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view.setResolution(newResolution);
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}
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};
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