# Code coverage report for src/map/anim/Map.PanAnimation.js

## Statements: 24.24% (8 / 33) Branches: 11.54% (3 / 26) Functions: 20% (1 / 5) Lines: 25% (8 / 32)

All files » src/map/anim/ » Map.PanAnimation.js

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     /*
     * Extends L.Map to handle panning animations.
     */

    L.Map.include({

    	setView: function (center, zoom, forceReset) {

    		zoom = this._limitZoom(zoom);
    		center = L.latLng(center);

    		Iif (this._panAnim) {
    			this._panAnim.stop();
    		}

    		var zoomChanged = (this._zoom !== zoom),
    			canBeAnimated = this._loaded && !forceReset && !!this._layers;

    		Iif (canBeAnimated) {

    			// try animating pan or zoom
    			var animated = zoomChanged ?
    				this.options.zoomAnimation && this._animateZoomIfClose && this._animateZoomIfClose(center, zoom) :
    				this._animatePanIfClose(center);

    			if (animated) {
    				// prevent resize handler call, the view will refresh after animation anyway
    				clearTimeout(this._sizeTimer);
    				return this;
    			}
    		}

    		// animation didn't start, just reset the map view
    		this._resetView(center, zoom);

    		return this;
    	},

    	panBy: function (offset, duration, easeLinearity, noMoveStart) {
    		offset = L.point(offset).round();

    		// TODO add options instead of arguments to setView/panTo/panBy/etc.

    		if (!offset.x && !offset.y) {
    			return this;
    		}

    		if (!this._panAnim) {
    			this._panAnim = new L.PosAnimation();

    			this._panAnim.on({
    				'step': this._onPanTransitionStep,
    				'end': this._onPanTransitionEnd
    			}, this);
    		}

    		// don't fire movestart if animating inertia
    		if (!noMoveStart) {
    			this.fire('movestart');
    		}

    		L.DomUtil.addClass(this._mapPane, 'leaflet-pan-anim');

    		var newPos = this._getMapPanePos().subtract(offset);
    		this._panAnim.run(this._mapPane, newPos, duration || 0.25, easeLinearity);

    		return this;
    	},

    	_onPanTransitionStep: function () {
    		this.fire('move');
    	},

    	_onPanTransitionEnd: function () {
    		L.DomUtil.removeClass(this._mapPane, 'leaflet-pan-anim');
    		this.fire('moveend');
    	},

    	_animatePanIfClose: function (center) {
    		// difference between the new and current centers in pixels
    		var offset = this._getCenterOffset(center)._floor();

    		if (!this.getSize().contains(offset)) { return false; }

    		this.panBy(offset);
    		return true;
    	}
    });