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Rotate to north for custom controls example

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This commit is contained in:
Stéphane Brunner
2013-06-26 16:22:07 +02:00
committed by Éric Lemoine
parent d15f68d651
commit 74f446948f
2 changed files with 23 additions and 58 deletions
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59
examples/custom-controls.js
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@@ -16,7 +16,7 @@ var app = window.app;
//
// Define zoom extent control.
// Define rotate to north control.
//
@@ -26,25 +26,26 @@ var app = window.app;
* @extends {ol.control.Control}
* @param {Object=} opt_options Control options.
*/
app.ZoomExtentControl = function(opt_options) {
app.RotateNorthControl = function(opt_options) {
var options = opt_options || {};
this.extent_ = options.extent;
var anchor = document.createElement('a');
anchor.href = '#zoom-to';
anchor.className = 'zoom-to';
anchor.href = '#rotate-north';
anchor.innerHTML = 'N';
var this_ = this;
var handleZoomTo = function(e) {
this_.handleZoomTo(e);
var handleRotateNorth = function(e) {
// prevent #rotate-north anchor from getting appended to the url
e.preventDefault();
this_.getMap().getView().getView2D().setRotation(0);
};
anchor.addEventListener('click', handleZoomTo, false);
anchor.addEventListener('touchstart', handleZoomTo, false);
anchor.addEventListener('click', handleRotateNorth, false);
anchor.addEventListener('touchstart', handleRotateNorth, false);
var element = document.createElement('div');
element.className = 'zoom-extent ol-unselectable';
element.className = 'rotate-north ol-unselectable';
element.appendChild(anchor);
ol.control.Control.call(this, {
@@ -54,46 +55,17 @@ app.ZoomExtentControl = function(opt_options) {
});
};
ol.inherits(app.ZoomExtentControl, ol.control.Control);
/**
* @param {Event} e Browser event.
*/
app.ZoomExtentControl.prototype.handleZoomTo = function(e) {
// prevent #zoomTo anchor from getting appended to the url
e.preventDefault();
var map = this.getMap();
var view = map.getView();
view.fitExtent(this.extent_, map.getSize());
};
/**
* Overload setMap to use the view projection's validity extent
* if no extent was passed to the constructor.
* @param {ol.Map} map Map.
*/
app.ZoomExtentControl.prototype.setMap = function(map) {
ol.control.Control.prototype.setMap.call(this, map);
if (map && !this.extent_) {
this.extent_ = map.getView().getProjection().getExtent();
}
};
ol.inherits(app.RotateNorthControl, ol.control.Control);
//
// Create map, giving it a zoom extent control.
// Create map, giving it a rotate to north control.
//
var map = new ol.Map({
controls: ol.control.defaults({}, [
new app.ZoomExtentControl({
extent: [813079.7791264898, 848966.9639063801,
5929220.284081122, 5936863.986909639]
})
new app.RotateNorthControl()
]),
layers: [
new ol.layer.TileLayer({
@@ -104,6 +76,7 @@ var map = new ol.Map({
target: 'map',
view: new ol.View2D({
center: [0, 0],
zoom: 2
zoom: 2,
rotation: 1
})
});