/* * Copyright (C) 2013 Antarix Tandon * * 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.sufficientlysecure.htmltextview; import android.content.Context; import android.graphics.Canvas; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.os.AsyncTask; import android.text.Html.ImageGetter; import android.view.View; import org.apache.http.HttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import java.io.IOException; import java.io.InputStream; import java.net.MalformedURLException; public class UrlImageGetter implements ImageGetter { Context c; View container; /** * Construct the URLImageParser which will execute AsyncTask and refresh the container * * @param t * @param c */ public UrlImageGetter(View t, Context c) { this.c = c; this.container = t; } public Drawable getDrawable(String source) { UrlDrawable urlDrawable = new UrlDrawable(); // get the actual source ImageGetterAsyncTask asyncTask = new ImageGetterAsyncTask(urlDrawable); asyncTask.execute(source); // return reference to URLDrawable where I will change with actual image from // the src tag return urlDrawable; } public class ImageGetterAsyncTask extends AsyncTask { UrlDrawable urlDrawable; public ImageGetterAsyncTask(UrlDrawable d) { this.urlDrawable = d; } @Override protected Drawable doInBackground(String... params) { String source = params[0]; return fetchDrawable(source); } @Override protected void onPostExecute(Drawable result) { // set the correct bound according to the result from HTTP call urlDrawable.setBounds(0, 0, 0 + result.getIntrinsicWidth(), 0 + result.getIntrinsicHeight()); // change the reference of the current drawable to the result // from the HTTP call urlDrawable.drawable = result; // redraw the image by invalidating the container UrlImageGetter.this.container.invalidate(); } /** * Get the Drawable from URL * * @param urlString * @return */ public Drawable fetchDrawable(String urlString) { try { InputStream is = fetch(urlString); Drawable drawable = Drawable.createFromStream(is, "src"); drawable.setBounds(0, 0, 0 + drawable.getIntrinsicWidth(), 0 + drawable.getIntrinsicHeight()); return drawable; } catch (Exception e) { return null; } } private InputStream fetch(String urlString) throws MalformedURLException, IOException { DefaultHttpClient httpClient = new DefaultHttpClient(); HttpGet request = new HttpGet(urlString); HttpResponse response = httpClient.execute(request); return response.getEntity().getContent(); } } @SuppressWarnings("deprecation") public class UrlDrawable extends BitmapDrawable { // the drawable that you need to set, you could set the initial drawing // with the loading image if you need to protected Drawable drawable; @Override public void draw(Canvas canvas) { // override the draw to facilitate refresh function later if (drawable != null) { drawable.draw(canvas); } } } } a id='n30' href='#n30'>30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183