Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* Copyright 2008 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.user.client.ui.impl;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.safehtml.shared.SafeUri;
import com.google.gwt.user.client.Event;
import com.google.gwt.user.client.ui.Image;
/**
* Implements the clipped image as a IMG inside a custom tag because we can't
* use the IE PNG transparency filter on background-image images.
*
* Do not use this class - it is used for implementation only, and its methods
* may change in the future.
*/
public class ClippedImageImplIE6 extends ClippedImageImpl {
private static String moduleBaseUrlProtocol =
GWT.getHostPageBaseURL().startsWith("https") ? "https://" : "http://";
private static native void injectGlobalHandler() /*-{
$wnd.__gwt_transparentImgHandler = function (elem) {
elem.onerror = null;
@com.google.gwt.user.client.DOM::setImgSrc(Lcom/google/gwt/user/client/Element;Ljava/lang/String;)(elem, @com.google.gwt.core.client.GWT::getModuleBaseURL()() + "clear.cache.gif");
};
}-*/;
private static native boolean isIE6() /*-{
return @com.google.gwt.dom.client.DOMImplIE6::isIE6()();
}-*/;
public ClippedImageImplIE6() {
injectGlobalHandler();
}
@Override
public void adjust(Element clipper, SafeUri url, int left, int top, int width, int height) {
if (!isIE6()) {
super.adjust(clipper, url, left, top, width, height);
return;
}
clipper.getStyle().setPropertyPx("width", width);
clipper.getStyle().setPropertyPx("height", height);
// Update the nested image's url.
Element img = clipper.getFirstChildElement();
img.getStyle().setProperty("filter",
"progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + url.asString()
+ "',sizingMethod='crop')");
img.getStyle().setPropertyPx("marginLeft", -left);
img.getStyle().setPropertyPx("marginTop", -top);
// AlphaImageLoader requires that we size the image explicitly.
// It really only needs to be enough to show the revealed portion.
int imgWidth = left + width;
int imgHeight = top + height;
img.setPropertyInt("width", imgWidth);
img.setPropertyInt("height", imgHeight);
}
@Override
public Element createStructure(SafeUri url, int left, int top, int width, int height) {
if (!isIE6()) {
return super.createStructure(url, left, top, width, height);
}
// We need to explicitly sink ONLOAD on the child image element, because it
// can't be fired on the clipper.
Element clipper = super.createStructure(url, left, top, width, height);
Element img = clipper.getFirstChildElement();
Event.sinkEvents(img, Event.ONLOAD);
return clipper;
}
@Override
public Element getImgElement(Image image) {
if (!isIE6()) {
return super.getImgElement(image);
}
return image.getElement().getFirstChildElement();
}
@Override
public SafeHtml getSafeHtml(SafeUri url, int left, int top, int width, int height) {
if (!isIE6()) {
return super.getSafeHtml(url, left, top, width, height);
}
// We cannot use a SafeHtmlTemplates because there are parameters in javascript context.
String clipperStyle = "overflow: hidden; width: " + width + "px; height: "
+ height + "px; padding: 0px; zoom: 1";
String imgStyle = "filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"
+ url.asString()
+ "',sizingMethod='crop'); margin-left: "
+ -left
+ "px; margin-top: " + -top + "px; border: none";
/*
* We initially set the image URL to an invalid value to force onerror to be
* fired when this string is turned into a DOM structure. At this point, we
* can set the image src using DOM.setImgSrc, which is used to get around
* issue #282. The invalid image URL is either http:// or https://,
* depending on the module's base URL. We have to match the invalid image
* URL's protocol with that of the module's base URL's protocol due to issue
* #1200.
*/
String clippedImgHtml = "";
return SafeHtmlUtils.fromTrustedString(clippedImgHtml);
}
}