191 lines
4.9 KiB
JavaScript
191 lines
4.9 KiB
JavaScript
// FIXME should listen on appropriate pane, once it is defined
|
|
// FIXME works for View2D only
|
|
|
|
goog.provide('ol.control.MousePosition');
|
|
|
|
goog.require('goog.events');
|
|
goog.require('goog.events.EventType');
|
|
goog.require('goog.style');
|
|
goog.require('ol.Object');
|
|
goog.require('ol.Pixel');
|
|
goog.require('ol.Projection');
|
|
goog.require('ol.TransformFunction');
|
|
goog.require('ol.control.Control');
|
|
|
|
|
|
|
|
/**
|
|
* @constructor
|
|
* @extends {ol.control.Control}
|
|
* @param {ol.control.MousePositionOptions} mousePositionOptions Mouse position
|
|
* options.
|
|
*/
|
|
ol.control.MousePosition = function(mousePositionOptions) {
|
|
|
|
var element = goog.dom.createDom(goog.dom.TagName.DIV, {
|
|
'class': 'ol-mouse-position'
|
|
});
|
|
|
|
goog.base(this, {
|
|
element: element,
|
|
map: mousePositionOptions.map,
|
|
target: mousePositionOptions.target
|
|
});
|
|
|
|
/**
|
|
* @private
|
|
* @type {ol.Projection|undefined}
|
|
*/
|
|
this.projection_ = mousePositionOptions.projection;
|
|
|
|
/**
|
|
* @private
|
|
* @type {ol.CoordinateFormatType|undefined}
|
|
*/
|
|
this.coordinateFormat_ = mousePositionOptions.coordinateFormat;
|
|
|
|
/**
|
|
* @private
|
|
* @type {string}
|
|
*/
|
|
this.undefinedHtml_ = goog.isDef(mousePositionOptions.undefinedHtml) ?
|
|
mousePositionOptions.undefinedHtml : '';
|
|
|
|
/**
|
|
* @private
|
|
* @type {ol.TransformFunction}
|
|
*/
|
|
this.transform_ = ol.Projection.identityTransform;
|
|
|
|
/**
|
|
* @private
|
|
* @type {Array.<number>}
|
|
*/
|
|
this.mapListenerKeys_ = null;
|
|
|
|
/**
|
|
* @private
|
|
* @type {Array.<number>}
|
|
*/
|
|
this.viewListenerKeys_ = null;
|
|
|
|
this.handleViewProjectionChanged_();
|
|
};
|
|
goog.inherits(ol.control.MousePosition, ol.control.Control);
|
|
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
ol.control.MousePosition.prototype.handleMapViewChanged_ = function() {
|
|
var map = this.getMap();
|
|
goog.asserts.assert(!goog.isNull(map));
|
|
if (!goog.isNull(this.viewListenerKeys_)) {
|
|
goog.array.forEach(this.viewListenerKeys_, goog.events.unlistenByKey);
|
|
this.viewListenerKeys_ = null;
|
|
}
|
|
var view = map.getView();
|
|
if (goog.isDefAndNotNull(view)) {
|
|
// FIXME works for View2D only
|
|
goog.asserts.assert(view instanceof ol.View2D);
|
|
this.viewListenerKeys_ = [
|
|
goog.events.listen(
|
|
view, ol.Object.getChangedEventType(ol.View2DProperty.ROTATION),
|
|
this.handleViewProjectionChanged_, false, this)
|
|
];
|
|
this.handleViewProjectionChanged_();
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {goog.events.BrowserEvent} browserEvent Browser event.
|
|
* @protected
|
|
*/
|
|
ol.control.MousePosition.prototype.handleMouseMove = function(browserEvent) {
|
|
var map = this.getMap();
|
|
var eventPosition = goog.style.getRelativePosition(
|
|
browserEvent, map.getViewport());
|
|
var pixel = new ol.Pixel(eventPosition.x, eventPosition.y);
|
|
var coordinate = map.getCoordinateFromPixel(pixel);
|
|
var html;
|
|
if (!goog.isNull(coordinate)) {
|
|
coordinate = this.transform_(coordinate);
|
|
if (goog.isDef(this.coordinateFormat_)) {
|
|
html = this.coordinateFormat_(coordinate);
|
|
} else {
|
|
html = coordinate.toString();
|
|
}
|
|
} else {
|
|
html = this.undefinedHtml_;
|
|
}
|
|
this.element.innerHTML = html;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {goog.events.BrowserEvent} browserEvent Browser event.
|
|
* @protected
|
|
*/
|
|
ol.control.MousePosition.prototype.handleMouseOut = function(browserEvent) {
|
|
this.element.innerHTML = this.undefinedHtml_;
|
|
};
|
|
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
ol.control.MousePosition.prototype.handleViewProjectionChanged_ = function() {
|
|
this.updateTransform_();
|
|
// FIXME should we instead re-calculate using the last known
|
|
// mouse position?
|
|
this.element.innerHTML = this.undefinedHtml_;
|
|
};
|
|
|
|
|
|
/**
|
|
* @inheritDoc
|
|
*/
|
|
ol.control.MousePosition.prototype.setMap = function(map) {
|
|
if (!goog.isNull(this.mapListenerKeys_)) {
|
|
goog.array.forEach(this.mapListenerKeys_, goog.events.unlistenByKey);
|
|
this.mapListenerKeys_ = null;
|
|
}
|
|
goog.base(this, 'setMap', map);
|
|
if (!goog.isNull(map)) {
|
|
var viewport = map.getViewport();
|
|
this.listenerKeys = [
|
|
goog.events.listen(viewport, goog.events.EventType.MOUSEMOVE,
|
|
this.handleMouseMove, false, this),
|
|
goog.events.listen(viewport, goog.events.EventType.MOUSEOUT,
|
|
this.handleMouseOut, false, this),
|
|
goog.events.listen(map,
|
|
ol.Object.getChangedEventType(ol.MapProperty.VIEW),
|
|
this.handleMapViewChanged_, false, this)
|
|
];
|
|
this.updateTransform_();
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
ol.control.MousePosition.prototype.updateTransform_ = function() {
|
|
var map, view;
|
|
if (!goog.isNull(map = this.getMap()) &&
|
|
!goog.isNull(view = map.getView())) {
|
|
// FIXME works for View2D only
|
|
goog.asserts.assert(view instanceof ol.View2D);
|
|
var viewProjection = view.getProjection();
|
|
if (!goog.isDef(viewProjection) || !goog.isDef(this.projection_)) {
|
|
this.transform_ = ol.Projection.identityTransform;
|
|
} else {
|
|
this.transform_ =
|
|
ol.Projection.getTransform(viewProjection, this.projection_);
|
|
}
|
|
} else {
|
|
this.transform_ = ol.Projection.identityTransform;
|
|
}
|
|
};
|