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add OpenLayers.Util.modifyAlphaImage() function and tests

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@448 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
euzuro
2006-05-29 13:30:11 +00:00
parent cad3369b27
commit cd0b43d938
2 changed files with 115 additions and 16 deletions
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56
lib/OpenLayers/Util.js
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@@ -709,6 +709,42 @@ OpenLayers.Util.alphaHack = function() {
(version >= 5.5) && (version < 7) );
}
/**
* @param {DOMElement} div Div containing Alpha-adjusted Image
* @param {String} id
* @param {OpenLayers.Pixel} px
* @param {OpenLayers.Size} sz
* @param {String} imgURL
* @param {String} position
* @param {String} border
* @param {String} sizing 'crop', 'scale', or 'image'. Default is "scale"
*/
OpenLayers.Util.modifyAlphaImageDiv = function(div, id, px, sz, imgURL,
position, border, sizing) {
OpenLayers.Util.modifyDOMElement(div, id, px, sz);
var img = div.childNodes[0];
if (imgURL) {
img.src = imgURL;
}
OpenLayers.Util.modifyDOMElement(img, div.id + "_innerImage", null, sz,
"relative", border);
if (OpenLayers.Util.alphaHack()) {
div.style.display = "inline-block";
if (sizing == null) {
sizing = "scale";
}
div.style.filter = "progid:DXImageTransform.Microsoft" +
".AlphaImageLoader(src='" + img.src + "', " +
"sizingMethod='" + sizing + "')";
img.style.filter = "progid:DXImageTransform.Microsoft" +
".Alpha(opacity=0)";
}
};
/**
* @param {String} id
* @param {OpenLayers.Pixel} px
@@ -725,23 +761,13 @@ OpenLayers.Util.alphaHack = function() {
OpenLayers.Util.createAlphaImageDiv = function(id, px, sz, imgURL,
position, border, sizing) {
var div = OpenLayers.Util.createDiv(id, px, sz);
var img = OpenLayers.Util.createImage(id + "_innerImage", null, sz,
imgURL, "relative", border);
var div = OpenLayers.Util.createDiv();
var img = OpenLayers.Util.createImage();
div.appendChild(img);
if (OpenLayers.Util.alphaHack()) {
div.style.display = "inline-block";
if (sizing == null) {
sizing = "scale";
}
div.style.filter = "progid:DXImageTransform.Microsoft" +
".AlphaImageLoader(src='" + imgURL + "', " +
"sizingMethod='" + sizing + "')";
img.style.filter = "progid:DXImageTransform.Microsoft" +
".Alpha(opacity=0)";
}
OpenLayers.Util.modifyAlphaImageDiv(div, id, px, sz, imgURL,
position, border, sizing);
return div;
};