com.urlisit.siteswrapper.cloud.widgets.OldLogo.java Source code

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Here is the source code for com.urlisit.siteswrapper.cloud.widgets.OldLogo.java

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/* Copyright 2014 URL IS/IT
 * 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.urlisit.siteswrapper.cloud.widgets;

import java.math.BigDecimal;
import java.math.MathContext;

import com.google.gwt.event.dom.client.LoadEvent;
import com.google.gwt.event.dom.client.LoadHandler;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeUri;
import com.google.gwt.safehtml.shared.UriUtils;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Image;
import com.urlisit.siteswrapper.cloud.model.DisplayLogoAs;
import com.urlisit.siteswrapper.cloud.view.View;

/**
 * @author url
 *
 */
public class OldLogo {

    private View view;
    private final Image imageLogo = new Image();
    private HTML htmlLogo;
    private boolean loaded;
    private Timer timer;
    private DisplayLogoAs displayLogoAs;
    private BigDecimal windowWidth;
    private BigDecimal windowHeight;
    private BigDecimal leftPercent;
    private BigDecimal topPercent;
    private BigDecimal widthPercent;
    private BigDecimal heightPercent;

    public OldLogo(View view) {
        this.view = view;
        leftPercent = BigDecimal.valueOf(Double.parseDouble(view.getLookAndFeel().getLogoLeftPercent()));
        topPercent = BigDecimal.valueOf(Double.parseDouble(view.getLookAndFeel().getLogoTopPercent()));
        widthPercent = BigDecimal.valueOf(Double.parseDouble(view.getLookAndFeel().getLogoWidthPercent()));
        heightPercent = BigDecimal.valueOf(Double.parseDouble(view.getLookAndFeel().getLogoHeightPercent()));
        displayLogoAs = view.getPage().getDisplayLogoAs();
        switch (displayLogoAs) {
        case HTML:
            SafeHtml html = new SafeHtmlBuilder().appendHtmlConstant(view.getPage().getLogoHtml()).toSafeHtml();
            htmlLogo = new HTML(html);
            view.getPanel().add(htmlLogo);
            break;
        case IMAGE:
            SafeUri url = UriUtils.fromString(view.getPage().getLogoImage());
            imageLogo.getElement().getStyle().setProperty("opacity", ".0");
            imageLogo.addLoadHandler(new LoadHandler() {
                @Override
                public void onLoad(LoadEvent event) {
                    loaded = true;
                    resize();
                    fadeIn();
                }
            });
            imageLogo.setUrl(url);
            view.getPanel().add(imageLogo);
            break;
        case NONE:
            break;
        }
    }

    public void resize() {
        if (loaded) {
            windowWidth = BigDecimal.valueOf(Window.getClientWidth());
            windowHeight = BigDecimal.valueOf(Window.getClientHeight());
            int left = leftPercent.multiply(windowWidth).intValue();
            int top = topPercent.multiply(windowHeight).intValue();

            BigDecimal newHeight = heightPercent.multiply(windowHeight);
            BigDecimal oldWidth = BigDecimal.valueOf(Integer.valueOf(imageLogo.getWidth()).doubleValue());
            BigDecimal oldHeight = BigDecimal.valueOf(Integer.valueOf(imageLogo.getHeight()).doubleValue());
            BigDecimal newWidth = newHeight.multiply(oldWidth.divide(oldHeight, 4, BigDecimal.ROUND_HALF_EVEN));

            switch (displayLogoAs) {
            case HTML:
                view.getPanel().setWidgetPosition(htmlLogo, left, top);
                break;
            case IMAGE:
                //imageLogo.setSize(width + "px", height + "px");
                imageLogo.setPixelSize(newWidth.intValue(), newHeight.intValue());
                view.getPanel().setWidgetPosition(imageLogo, left, top);
                break;
            case NONE:
                break;
            }
        } else {
            imageLogo.addLoadHandler(new LoadHandler() {
                @Override
                public void onLoad(LoadEvent event) {
                    loaded = true;
                    resize();
                    fadeIn();
                }
            });
        }
    }

    public void fadeIn() {
        imageLogo.getElement().getStyle().setOpacity(0);
        imageLogo.setVisible(true);
        int interval = 15;
        timer = new Timer() {
            BigDecimal current = new BigDecimal(0.0, MathContext.DECIMAL32);
            BigDecimal increment = new BigDecimal(0.1, MathContext.DECIMAL32);

            @Override
            public void run() {
                if (current.doubleValue() <= BigDecimal.ONE.doubleValue()) {
                    imageLogo.getElement().getStyle().setOpacity(current.doubleValue());
                    current = current.add(increment, MathContext.DECIMAL32);
                } else {
                    timer.cancel();
                }
            }
        };
        timer.scheduleRepeating(interval);
    }

}