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new slideRatio option for Control.Pan and Control.PanPanel. r=bartvde (closes #3039)

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@11070 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
ahocevar
2011-02-02 15:00:57 +00:00
parent 5d92c646b6
commit 198b3a9c7f
3 changed files with 79 additions and 15 deletions
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26
lib/OpenLayers/Control/Pan.js
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@@ -20,10 +20,20 @@ OpenLayers.Control.Pan = OpenLayers.Class(OpenLayers.Control, {
/**
* APIProperty: slideFactor
* {Integer} Number of pixels by which we'll pan the map in any direction
* on clicking the arrow buttons, defaults to 50.
* on clicking the arrow buttons, defaults to 50. If you want to pan
* by some ratio of the map dimensions, use <slideRatio> instead.
*/
slideFactor: 50,
/**
* APIProperty: slideRatio
* {Number} The fraction of map width/height by which we'll pan the map
* on clicking the arrow buttons. Default is null. If set, will
* override <slideFactor>. E.g. if slideRatio is .5, then Pan Up will
* pan up half the map height.
*/
slideRatio: null,
/**
* Property: direction
* {String} in {'North', 'South', 'East', 'West'}
@@ -61,18 +71,24 @@ OpenLayers.Control.Pan = OpenLayers.Class(OpenLayers.Control, {
*/
trigger: function(){
var getSlideFactor = OpenLayers.Function.bind(function (dim) {
return this.slideRatio ?
this.map.getSize()[dim] * this.slideRatio :
this.slideFactor;
}, this);
switch (this.direction) {
case OpenLayers.Control.Pan.NORTH:
this.map.pan(0, -this.slideFactor);
this.map.pan(0, -getSlideFactor("h"));
break;
case OpenLayers.Control.Pan.SOUTH:
this.map.pan(0, this.slideFactor);
this.map.pan(0, getSlideFactor("h"));
break;
case OpenLayers.Control.Pan.WEST:
this.map.pan(-this.slideFactor, 0);
this.map.pan(-getSlideFactor("w"), 0);
break;
case OpenLayers.Control.Pan.EAST:
this.map.pan(this.slideFactor, 0);
this.map.pan(getSlideFactor("w"), 0);
break;
}
},