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tx_dlf_ol3.js
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tx_dlf_ol3.js
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/**
* (c) Kitodo. Key to digital objects e.V. <[email protected]>
*
* This file is part of the Kitodo and TYPO3 projects.
*
* @license GNU General Public License version 3 or later.
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*/
/**
* @return {number|undefined}
*/
ol.Map.prototype.getZoom = function(){
return this.getView().getZoom();
};
/**
* Returns an array containing the min and max zoom level [minZoom, maxZoom]
* @return {Array.<number>}
*/
ol.Map.prototype.getZoomRange = function() {
var maxZoom = window.OL3_MAX_ZOOM !== undefined && !isNaN(window.OL3_MAX_ZOOM) ? window.OL3_MAX_ZOOM : 18;
return [0, maxZoom];
};
/**
* Zooms to given zoomLevel
*
* @param {number} zoomLevel
*/
ol.Map.prototype.zoom = function(zoomLevel) {
var view = this.getView(),
resolution = view.getResolution();
this.beforeRender(ol.animation.zoom({
'resolution': resolution,
'duration': 500
}));
view.setZoom(zoomLevel);
};
/**
* Zooms in the map. Uses ol.animation for smooth zooming
*/
ol.Map.prototype.zoomIn = function() {
var view = this.getView(),
zoomLevel = view.getZoom() + 1,
resolution = view.getResolution();
this.beforeRender(ol.animation.zoom({
'resolution': resolution,
'duration': 500
}));
view.setZoom(zoomLevel);
};
/**
* Zooms out the map
*/
ol.Map.prototype.zoomOut = function() {
var view = this.getView(),
zoomLevel = view.getZoom() - 1,
resolution = view.getResolution();
this.beforeRender(ol.animation.zoom({
'resolution': resolution,
'duration': 500
}));
view.setZoom(zoomLevel);
};
/**
* Zooms to given point
* @param {Array.<number>} center
* @param {number} zoomLevel
* @param {number=} opt_duration
*/
ol.Map.prototype.zoomTo = function(center, zoomLevel, opt_duration) {
var view = this.getView(),
resolution = view.getResolution(),
duration = opt_duration !== undefined ? opt_duration : 500;
this.beforeRender(ol.animation.zoom({
'resolution': resolution,
'duration': duration
}));
view.setCenter(center);
view.setZoom(zoomLevel);
};
/**
* Rotate the map
* @param {number} rotation
*/
ol.Map.prototype.rotate = function(rotation) {
var view = this.getView(),
rotate = view.getRotation() + (rotation * Math.PI/180),
center = view.getCenter();
this.beforeRender(ol.animation.rotate({
'rotation':view.getRotation(),
'anchor':center,
'duration':200
}));
view.rotate(rotate, center);
if (this.ov_view != null) {
this.ov_view.rotate(rotate);
}
};
/**
* Rotate the map in the left direction
*/
ol.Map.prototype.rotateLeft = function() {
this.rotate(-5);
if (this.ov_view != null) {
this.ov_view.rotate(-5);
}
};
/**
* Rotate the map in the right direction
*/
ol.Map.prototype.rotateRight = function() {
this.rotate(5);
if (this.ov_view != null) {
this.ov_view.rotate(5);
}
};
/**
* Resets the rotation of the map
*/
ol.Map.prototype.resetRotation = function() {
this.getView().rotate(0, this.getView().getCenter());
if (this.ov_view != null) {
this.ov_view.rotate(0);
}
};