Adding a simple zoom control.
This control generates simple zoom in/out links that can be styled with CSS.
This commit is contained in:
tschaub
35
examples/zoom.html
Normal file
35
examples/zoom.html
Normal file
@@ -0,0 +1,35 @@
|
||||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
|
||||
<meta name="apple-mobile-web-app-capable" content="yes">
|
||||
<title>OpenLayers Zoom Example</title>
|
||||
<link rel="stylesheet" href="../theme/default/style.css" type="text/css">
|
||||
<link rel="stylesheet" href="style.css" type="text/css">
|
||||
<style>
|
||||
.olControlAttribution {
|
||||
bottom: 5px;
|
||||
font-size: 9px;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1 id="title">Zoom Links Example</h1>
|
||||
<div id="tags">zoom control</div>
|
||||
|
||||
<div id="shortdesc">Shows how to use a simple zoom control.</div>
|
||||
|
||||
<div id="map" class="smallmap"></div>
|
||||
|
||||
<div id="docs">
|
||||
<p>This example demonstrates the use of a Zoom control.</p>
|
||||
<p>
|
||||
See the <a href="zoom.js" target="_blank">zoom.js</a> source
|
||||
for details.
|
||||
</p>
|
||||
</div>
|
||||
<script src="../lib/OpenLayers.js"></script>
|
||||
<script src="zoom.js"></script>
|
||||
</body>
|
||||
</html>
|
||||
14
examples/zoom.js
Normal file
14
examples/zoom.js
Normal file
@@ -0,0 +1,14 @@
|
||||
var map = new OpenLayers.Map({
|
||||
div: "map",
|
||||
layers: [new OpenLayers.Layer.OSM()],
|
||||
controls: [
|
||||
new OpenLayers.Control.Navigation({
|
||||
dragPanOptions: {
|
||||
enableKinetic: true
|
||||
}
|
||||
}),
|
||||
new OpenLayers.Control.Zoom()
|
||||
],
|
||||
center: [0, 0],
|
||||
zoom: 1
|
||||
});
|
||||
@@ -204,6 +204,7 @@
|
||||
"OpenLayers/Control/Graticule.js",
|
||||
"OpenLayers/Control/TransformFeature.js",
|
||||
"OpenLayers/Control/SLDSelect.js",
|
||||
"OpenLayers/Control/Zoom.js",
|
||||
"OpenLayers/Geometry.js",
|
||||
"OpenLayers/Geometry/Collection.js",
|
||||
"OpenLayers/Geometry/Point.js",
|
||||
|
||||
140
lib/OpenLayers/Control/Zoom.js
Normal file
140
lib/OpenLayers/Control/Zoom.js
Normal file
@@ -0,0 +1,140 @@
|
||||
/* Copyright (c) 2006-2012 by OpenLayers Contributors (see authors.txt for
|
||||
* full list of contributors). Published under the Clear BSD license.
|
||||
* See http://svn.openlayers.org/trunk/openlayers/license.txt for the
|
||||
* full text of the license. */
|
||||
|
||||
/**
|
||||
* @requires OpenLayers/Control.js
|
||||
*/
|
||||
|
||||
/**
|
||||
* Class: OpenLayers.Control.Zoom
|
||||
* The Zoom control is a pair of +/- links for zooming in and out.
|
||||
*
|
||||
* Inherits from:
|
||||
* - <OpenLayers.Control>
|
||||
*/
|
||||
OpenLayers.Control.Zoom = OpenLayers.Class(OpenLayers.Control, {
|
||||
|
||||
/**
|
||||
* APIProperty: zoomInText
|
||||
* {String}
|
||||
* Text for zoom-in link. Default is "+".
|
||||
*/
|
||||
zoomInText: "+",
|
||||
|
||||
/**
|
||||
* APIProperty: zoomInId
|
||||
* {String}
|
||||
* Instead of having the control create a zoom in link, you can provide
|
||||
* the identifier for an anchor element already added to the document.
|
||||
* By default, an element with id "olZoomInLink" will be searched for
|
||||
* and used if it exists.
|
||||
*/
|
||||
zoomInId: "olZoomInLink",
|
||||
|
||||
/**
|
||||
* APIProperty: zoomOutText
|
||||
* {String}
|
||||
* Text for zoom-out link. Default is "-".
|
||||
*/
|
||||
zoomOutText: "-",
|
||||
|
||||
/**
|
||||
* APIProperty: zoomOutId
|
||||
* {String}
|
||||
* Instead of having the control create a zoom out link, you can provide
|
||||
* the identifier for an anchor element already added to the document.
|
||||
* By default, an element with id "olZoomOutLink" will be searched for
|
||||
* and used if it exists.
|
||||
*/
|
||||
zoomOutId: "olZoomOutLink",
|
||||
|
||||
/**
|
||||
* Method: draw
|
||||
*
|
||||
* Returns:
|
||||
* {DOMElement} A reference to the DIV DOMElement containing the
|
||||
* switcher tabs.
|
||||
*/
|
||||
draw: function() {
|
||||
var div = OpenLayers.Control.prototype.draw.apply(this),
|
||||
links = this.getOrCreateLinks(div),
|
||||
zoomIn = links.zoomIn,
|
||||
zoomOut = links.zoomOut,
|
||||
bind = OpenLayers.Function.bind;
|
||||
|
||||
zoomIn.onclick = bind(this.onZoomInClick, this);
|
||||
zoomOut.onclick = bind(this.onZoomOutClick, this);
|
||||
this.zoomInLink = zoomIn;
|
||||
this.zoomOutLink = zoomOut;
|
||||
return div;
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: getOrCreateLinks
|
||||
*
|
||||
* Parameters:
|
||||
* el - {DOMElement}
|
||||
*
|
||||
* Return:
|
||||
* {Object} Object with zoomIn and zoomOut properties referencing links.
|
||||
*/
|
||||
getOrCreateLinks: function(el) {
|
||||
var zoomIn = document.getElementById(this.zoomInId);
|
||||
if (!zoomIn) {
|
||||
zoomIn = document.createElement("a");
|
||||
zoomIn.href = "#zoomIn";
|
||||
zoomIn.appendChild(document.createTextNode(this.zoomInText));
|
||||
zoomIn.className = "olControlZoomIn";
|
||||
el.appendChild(zoomIn);
|
||||
}
|
||||
var zoomOut = document.getElementById(this.zoomOutId);
|
||||
if (!zoomOut) {
|
||||
zoomOut = document.createElement("a");
|
||||
zoomOut.href = "#zoomOut";
|
||||
zoomOut.appendChild(document.createTextNode(this.zoomOutText));
|
||||
zoomOut.className = "olControlZoomOut";
|
||||
el.appendChild(zoomOut);
|
||||
}
|
||||
return {
|
||||
zoomIn: zoomIn, zoomOut: zoomOut
|
||||
};
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: onZoomInClick
|
||||
* Called when zoom-in link is clicked.
|
||||
*/
|
||||
onZoomInClick: function() {
|
||||
this.map.zoomIn();
|
||||
return false;
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: onZoomOutClick
|
||||
* Called when zoom-out link is clicked.
|
||||
*/
|
||||
onZoomOutClick: function() {
|
||||
this.map.zoomOut();
|
||||
return false;
|
||||
},
|
||||
|
||||
/**
|
||||
* Method: destroy
|
||||
* Clean up.
|
||||
*/
|
||||
destroy: function() {
|
||||
if (this.zoomInLink) {
|
||||
delete this.zoomInLink.onclick;
|
||||
delete this.zoomInLink;
|
||||
}
|
||||
if (this.zoomOutLink) {
|
||||
delete this.zoomOutLink.onclick;
|
||||
delete this.zoomOutLink;
|
||||
}
|
||||
OpenLayers.Control.prototype.destroy.apply(this);
|
||||
},
|
||||
|
||||
CLASS_NAME: "OpenLayers.Control.Zoom"
|
||||
});
|
||||
@@ -429,6 +429,38 @@ span.olGoogleAttribution.hybrid a, span.olGoogleAttribution.satellite a {
|
||||
background-position: -26px -24px;
|
||||
}
|
||||
|
||||
div.olControlZoom {
|
||||
position: absolute;
|
||||
top: 8px;
|
||||
left: 8px;
|
||||
}
|
||||
div.olControlZoom a {
|
||||
display: block;
|
||||
margin: 2px;
|
||||
padding: 0 4px;
|
||||
color: white;
|
||||
font-size: 18px;
|
||||
font-family: 'Lucida Grande', Verdana, Geneva, Lucida, Arial, Helvetica, sans-serif;
|
||||
font-weight: bold;
|
||||
text-decoration: none;
|
||||
text-align: center;
|
||||
height: 22px;
|
||||
line-height: 22px;
|
||||
background-color: #4d4d4d; /* fallback for IE */
|
||||
background-color: rgba(0, 0, 0, 0.3);
|
||||
border: 1px solid rgba(255, 255, 255, 0.6);
|
||||
}
|
||||
div.olControlZoom a:hover {
|
||||
background-color: #7f7f7f; /* fallback for IE */
|
||||
background-color: rgba(0, 0, 0, 0.5);
|
||||
}
|
||||
a.olControlZoomIn {
|
||||
border-radius: 5px 5px 0 0;
|
||||
}
|
||||
a.olControlZoomOut {
|
||||
border-radius: 0 0 5px 5px;
|
||||
}
|
||||
|
||||
/**
|
||||
* Animations
|
||||
*/
|
||||
|
||||
Reference in New Issue
Block a user