Java tutorial
package com.vaadin.addon.spreadsheet.client; /* * #%L * Vaadin Spreadsheet * %% * Copyright (C) 2013 - 2015 Vaadin Ltd * %% * This program is available under Commercial Vaadin Add-On License 3.0 * (CVALv3). * * See the file license.html distributed with this software for more * information about licensing. * * You should have received a copy of the CVALv3 along with this program. * If not, see <http://vaadin.com/license/cval-3>. * #L% */ import com.google.gwt.dom.client.Style.Unit; import com.google.gwt.user.client.ui.SimplePanel; import com.google.gwt.user.client.ui.Widget; public class SheetOverlay extends SimplePanel { public static final String SHEET_IMAGE_CLASSNAME = "sheet-image"; private int col; private int row; public SheetOverlay(Widget widget, OverlayInfo overlayInfo) { widget.setSize("100%", "100%"); getElement().getStyle().setProperty("pointerEvents", "none"); widget.getElement().getStyle().setProperty("pointerEvents", "all"); this.add(widget); this.updateSizeLocationPadding(overlayInfo); } public void updateSizeLocationPadding(OverlayInfo imageInfo) { setLocation(imageInfo.col, imageInfo.row); setHeight(imageInfo.height); setWidth(imageInfo.width); setPadding(imageInfo.dx, imageInfo.dy); } public void setLocation(int col, int row) { this.col = col; this.row = row; setStyleName(SHEET_IMAGE_CLASSNAME); String location = "col" + col + " row" + row; addStyleName(location); } public void setWidth(float px) { getElement().getStyle().setWidth(px, Unit.PX); } public void setHeight(float pt) { getElement().getStyle().setHeight(pt, Unit.PT); } public void setPadding(float x, float y) { getElement().getStyle().setPaddingLeft(x, Unit.PX); getElement().getStyle().setPaddingTop(y, Unit.PT); } public int getRow() { return row; } public int getCol() { return col; } }