58 lines
1.3 KiB
JavaScript
58 lines
1.3 KiB
JavaScript
goog.provide('ol.interaction.DragPan');
|
|
|
|
goog.require('ol.Coordinate');
|
|
goog.require('ol.MapBrowserEvent');
|
|
goog.require('ol.interaction.ConditionType');
|
|
goog.require('ol.interaction.Drag');
|
|
|
|
|
|
|
|
/**
|
|
* @constructor
|
|
* @extends {ol.interaction.Drag}
|
|
* @param {ol.interaction.ConditionType} condition Condition.
|
|
*/
|
|
ol.interaction.DragPan = function(condition) {
|
|
|
|
goog.base(this);
|
|
|
|
/**
|
|
* @private
|
|
* @type {ol.interaction.ConditionType}
|
|
*/
|
|
this.condition_ = condition;
|
|
|
|
};
|
|
goog.inherits(ol.interaction.DragPan, ol.interaction.Drag);
|
|
|
|
|
|
/**
|
|
* @inheritDoc
|
|
*/
|
|
ol.interaction.DragPan.prototype.handleDrag = function(mapBrowserEvent) {
|
|
var map = mapBrowserEvent.map;
|
|
var resolution = map.getResolution();
|
|
var rotation = map.getRotation();
|
|
var delta =
|
|
new ol.Coordinate(-resolution * this.deltaX, resolution * this.deltaY);
|
|
if (map.canRotate() && goog.isDef(rotation)) {
|
|
delta.rotate(rotation);
|
|
}
|
|
var newCenter = new ol.Coordinate(
|
|
this.startCenter.x + delta.x, this.startCenter.y + delta.y);
|
|
map.setCenter(newCenter);
|
|
};
|
|
|
|
|
|
/**
|
|
* @inheritDoc
|
|
*/
|
|
ol.interaction.DragPan.prototype.handleDragStart = function(mapBrowserEvent) {
|
|
var browserEvent = mapBrowserEvent.browserEvent;
|
|
if (this.condition_(browserEvent)) {
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
};
|