001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.wicket.markup.html.image; 018 019import java.io.IOException; 020 021import org.apache.wicket.WicketRuntimeException; 022import org.apache.wicket.markup.ComponentTag; 023import org.apache.wicket.markup.html.WebComponent; 024import org.apache.wicket.model.IModel; 025import org.apache.wicket.request.resource.PackageResourceReference; 026import org.apache.wicket.util.image.ImageUtil; 027import org.apache.wicket.util.resource.ResourceStreamNotFoundException; 028 029/** 030 * The inline image is used to embed the complete image content within a HTML document. 031 * 032 * @author Tobias Soloschenko 033 * @since 6.20.0 034 * 035 */ 036public class InlineImage extends WebComponent 037{ 038 039 private static final long serialVersionUID = 1L; 040 041 private PackageResourceReference packageResourceReference; 042 043 /** 044 * Creates an inline image 045 * 046 * @param id 047 * the id 048 * @param packageResourceReference 049 * the package resource reference of the image 050 */ 051 public InlineImage(String id, PackageResourceReference packageResourceReference) 052 { 053 this(id, null, packageResourceReference); 054 } 055 056 /** 057 * Creates an inline image 058 * 059 * @param id 060 * the id 061 * @param model 062 * the model of the inline image 063 * @param packageResourceReference 064 * the package resource reference of the image 065 */ 066 public InlineImage(String id, IModel<?> model, PackageResourceReference packageResourceReference) 067 { 068 super(id, model); 069 this.packageResourceReference = packageResourceReference; 070 } 071 072 /** 073 * Renders the complete image tag with the base64 encoded content. 074 */ 075 @Override 076 protected void onComponentTag(ComponentTag tag) 077 { 078 super.onComponentTag(tag); 079 080 checkComponentTag(tag, "img"); 081 082 try 083 { 084 tag.put("src", ImageUtil.createBase64EncodedImage(packageResourceReference, false)); 085 } 086 catch (ResourceStreamNotFoundException e) 087 { 088 throw new WicketRuntimeException("Couldn't find the resource stream", e); 089 } 090 catch (IOException e) 091 { 092 throw new WicketRuntimeException("Error while reading the resource stream", e); 093 } 094 } 095}