org.jboss.errai.widgets.client.effects.effectimpl.IEEffectImpl.java Source code

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Here is the source code for org.jboss.errai.widgets.client.effects.effectimpl.IEEffectImpl.java

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/*
 * Copyright 2010 JBoss, a divison Red Hat, 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 org.jboss.errai.widgets.client.effects.effectimpl;

import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.Timer;
import org.jboss.errai.widgets.client.effects.Effect;

public class IEEffectImpl implements Effect {
    public Timer doFade(final Element el, double duration, final int start, final int end) {
        Timer t = start < end ? new Timer() {
            int step = start;

            public void run() {
                step += 5;
                if (step < end) {
                    setOpacity(el, step);
                } else {
                    setOpacity(el, end);
                    cancel();
                }
            }
        } : new Timer() {
            int step = end;

            public void run() {
                step -= 5;
                if (step > end) {
                    setOpacity(el, step);
                } else {
                    setOpacity(el, end);
                    cancel();
                }
            }
        };

        t.scheduleRepeating(1);

        return t;
    }

    public void setOpacity(Element el, int opacity) {
        el.getStyle().setProperty("filter", "progid:DXImageTransform.Microsoft.Alpha(opacity='" + opacity + "')");
    }
}