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(Closes #1187.) applying Bart's patch to add a zoom out option to the zoom control. r=pspencer.

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@5796 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Paul Spencer
2008-01-17 16:35:49 +00:00
parent 52220873e3
commit fff63a1f9f
1 changed files with 30 additions and 4 deletions
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26
lib/OpenLayers/Control/ZoomBox.js
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@@ -20,6 +20,12 @@ OpenLayers.Control.ZoomBox = OpenLayers.Class(OpenLayers.Control, {
*/ */
type: OpenLayers.Control.TYPE_TOOL, type: OpenLayers.Control.TYPE_TOOL,
/**
* Property: out
* {Boolean} Should the control be used for zooming out?
*/
out: false,
/** /**
* Method: draw * Method: draw
*/ */
@@ -36,16 +42,36 @@ OpenLayers.Control.ZoomBox = OpenLayers.Class(OpenLayers.Control, {
*/ */
zoomBox: function (position) { zoomBox: function (position) {
if (position instanceof OpenLayers.Bounds) { if (position instanceof OpenLayers.Bounds) {
if (!this.out) {
var minXY = this.map.getLonLatFromPixel( var minXY = this.map.getLonLatFromPixel(
new OpenLayers.Pixel(position.left, position.bottom)); new OpenLayers.Pixel(position.left, position.bottom));
var maxXY = this.map.getLonLatFromPixel( var maxXY = this.map.getLonLatFromPixel(
new OpenLayers.Pixel(position.right, position.top)); new OpenLayers.Pixel(position.right, position.top));
var bounds = new OpenLayers.Bounds(minXY.lon, minXY.lat, var bounds = new OpenLayers.Bounds(minXY.lon, minXY.lat,
maxXY.lon, maxXY.lat); maxXY.lon, maxXY.lat);
} else {
var pixWidth = Math.abs(position.right-position.left);
var pixHeight = Math.abs(position.top-position.bottom);
var zoomFactor = Math.min((this.map.size.h / pixHeight),
(this.map.size.w / pixWidth));
var extent = map.getExtent();
var center = this.map.getLonLatFromPixel(
position.getCenterPixel());
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;
var bounds = new OpenLayers.Bounds(xmin, ymin, xmax, ymax);
}
this.map.zoomToExtent(bounds); this.map.zoomToExtent(bounds);
} else { // it's a pixel } else { // it's a pixel
if (!this.out) {
this.map.setCenter(this.map.getLonLatFromPixel(position), this.map.setCenter(this.map.getLonLatFromPixel(position),
this.map.getZoom() + 1); this.map.getZoom() + 1);
} else {
this.map.setCenter(this.map.getLonLatFromPixel(position),
this.map.getZoom() - 1);
}
} }
}, },