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authorChris Schlaeger <chris@linux.com>2015-10-17 21:36:38 +0200
committerChris Schlaeger <chris@linux.com>2015-10-17 21:36:38 +0200
commite30f267181d990947e67909de4809fa941698c85 (patch)
tree46e9f94c2b3699ed378963b420b8a8d361286ea1 /misc/openlayers/lib/OpenLayers/Control/ZoomBox.js
parente763ceb183f389fcd314a4a6a712d87c9d4cdb32 (diff)
downloadpostrunner-e30f267181d990947e67909de4809fa941698c85.zip
Upgrading openlayers to 3.x
Diffstat (limited to 'misc/openlayers/lib/OpenLayers/Control/ZoomBox.js')
-rw-r--r--misc/openlayers/lib/OpenLayers/Control/ZoomBox.js129
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diff --git a/misc/openlayers/lib/OpenLayers/Control/ZoomBox.js b/misc/openlayers/lib/OpenLayers/Control/ZoomBox.js
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-/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for
- * full list of contributors). Published under the 2-clause BSD license.
- * See license.txt in the OpenLayers distribution or repository for the
- * full text of the license. */
-
-/**
- * @requires OpenLayers/Control.js
- * @requires OpenLayers/Handler/Box.js
- */
-
-/**
- * Class: OpenLayers.Control.ZoomBox
- * The ZoomBox control enables zooming directly to a given extent, by drawing
- * a box on the map. The box is drawn by holding down shift, whilst dragging
- * the mouse.
- *
- * Inherits from:
- * - <OpenLayers.Control>
- */
-OpenLayers.Control.ZoomBox = OpenLayers.Class(OpenLayers.Control, {
- /**
- * Property: type
- * {OpenLayers.Control.TYPE}
- */
- type: OpenLayers.Control.TYPE_TOOL,
-
- /**
- * Property: out
- * {Boolean} Should the control be used for zooming out?
- */
- out: false,
-
- /**
- * APIProperty: keyMask
- * {Integer} Zoom only occurs if the keyMask matches the combination of
- * keys down. Use bitwise operators and one or more of the
- * <OpenLayers.Handler> constants to construct a keyMask. Leave null if
- * not used mask. Default is null.
- */
- keyMask: null,
-
- /**
- * APIProperty: alwaysZoom
- * {Boolean} Always zoom in/out when box drawn, even if the zoom level does
- * not change.
- */
- alwaysZoom: false,
-
- /**
- * APIProperty: zoomOnClick
- * {Boolean} Should we zoom when no box was dragged, i.e. the user only
- * clicked? Default is true.
- */
- zoomOnClick: true,
-
- /**
- * Method: draw
- */
- draw: function() {
- this.handler = new OpenLayers.Handler.Box( this,
- {done: this.zoomBox}, {keyMask: this.keyMask} );
- },
-
- /**
- * Method: zoomBox
- *
- * Parameters:
- * position - {<OpenLayers.Bounds>} or {<OpenLayers.Pixel>}
- */
- zoomBox: function (position) {
- if (position instanceof OpenLayers.Bounds) {
- var bounds,
- targetCenterPx = position.getCenterPixel();
- if (!this.out) {
- var minXY = this.map.getLonLatFromPixel({
- x: position.left,
- y: position.bottom
- });
- var maxXY = this.map.getLonLatFromPixel({
- x: position.right,
- y: position.top
- });
- bounds = new OpenLayers.Bounds(minXY.lon, minXY.lat,
- maxXY.lon, maxXY.lat);
- } else {
- var pixWidth = position.right - position.left;
- var pixHeight = position.bottom - position.top;
- var zoomFactor = Math.min((this.map.size.h / pixHeight),
- (this.map.size.w / pixWidth));
- var extent = this.map.getExtent();
- var center = this.map.getLonLatFromPixel(targetCenterPx);
- var xmin = center.lon - (extent.getWidth()/2)*zoomFactor;
- var xmax = center.lon + (extent.getWidth()/2)*zoomFactor;
- var ymin = center.lat - (extent.getHeight()/2)*zoomFactor;
- var ymax = center.lat + (extent.getHeight()/2)*zoomFactor;
- bounds = new OpenLayers.Bounds(xmin, ymin, xmax, ymax);
- }
- // always zoom in/out
- var lastZoom = this.map.getZoom(),
- size = this.map.getSize(),
- centerPx = {x: size.w / 2, y: size.h / 2},
- zoom = this.map.getZoomForExtent(bounds),
- oldRes = this.map.getResolution(),
- newRes = this.map.getResolutionForZoom(zoom);
- if (oldRes == newRes) {
- this.map.setCenter(this.map.getLonLatFromPixel(targetCenterPx));
- } else {
- var zoomOriginPx = {
- x: (oldRes * targetCenterPx.x - newRes * centerPx.x) /
- (oldRes - newRes),
- y: (oldRes * targetCenterPx.y - newRes * centerPx.y) /
- (oldRes - newRes)
- };
- this.map.zoomTo(zoom, zoomOriginPx);
- }
- if (lastZoom == this.map.getZoom() && this.alwaysZoom == true){
- this.map.zoomTo(lastZoom + (this.out ? -1 : 1));
- }
- } else if (this.zoomOnClick) { // it's a pixel
- if (!this.out) {
- this.map.zoomTo(this.map.getZoom() + 1, position);
- } else {
- this.map.zoomTo(this.map.getZoom() - 1, position);
- }
- }
- },
-
- CLASS_NAME: "OpenLayers.Control.ZoomBox"
-});