1 /******************************************************************************* 2 * Copyright 2011 See AUTHORS file. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 ******************************************************************************/ 16 17 package com.badlogic.gdx.tests; 18 19 import java.io.InputStream; 20 import java.net.HttpURLConnection; 21 import java.net.URL; 22 23 import com.badlogic.gdx.Gdx; 24 import com.badlogic.gdx.graphics.GL20; 25 import com.badlogic.gdx.graphics.Pixmap; 26 import com.badlogic.gdx.graphics.Texture; 27 import com.badlogic.gdx.graphics.g2d.BitmapFont; 28 import com.badlogic.gdx.graphics.g2d.SpriteBatch; 29 import com.badlogic.gdx.graphics.g2d.TextureRegion; 30 import com.badlogic.gdx.math.MathUtils; 31 import com.badlogic.gdx.tests.utils.GdxTest; 32 import com.badlogic.gdx.utils.StreamUtils; 33 34 public class TextureDownloadTest extends GdxTest { 35 TextureRegion image; 36 BitmapFont font; 37 SpriteBatch batch; 38 39 @Override create()40 public void create () { 41 new Thread(new Runnable() { 42 /** Downloads the content of the specified url to the array. The array has to be big enough. */ 43 private int download (byte[] out, String url) { 44 InputStream in = null; 45 try { 46 HttpURLConnection conn = null; 47 conn = (HttpURLConnection)new URL(url).openConnection(); 48 conn.setDoInput(true); 49 conn.setDoOutput(false); 50 conn.setUseCaches(true); 51 conn.connect(); 52 in = conn.getInputStream(); 53 int readBytes = 0; 54 while (true) { 55 int length = in.read(out, readBytes, out.length - readBytes); 56 if (length == -1) break; 57 readBytes += length; 58 } 59 return readBytes; 60 } catch (Exception ex) { 61 return 0; 62 } finally { 63 StreamUtils.closeQuietly(in); 64 } 65 } 66 67 @Override 68 public void run () { 69 byte[] bytes = new byte[200 * 1024]; // assuming the content is not bigger than 200kb. 70 int numBytes = download(bytes, "http://www.badlogicgames.com/wordpress/wp-content/uploads/2012/01/badlogic-new.png"); 71 if (numBytes != 0) { 72 // load the pixmap, make it a power of two if necessary (not needed for GL ES 2.0!) 73 Pixmap pixmap = new Pixmap(bytes, 0, numBytes); 74 final int originalWidth = pixmap.getWidth(); 75 final int originalHeight = pixmap.getHeight(); 76 int width = MathUtils.nextPowerOfTwo(pixmap.getWidth()); 77 int height = MathUtils.nextPowerOfTwo(pixmap.getHeight()); 78 final Pixmap potPixmap = new Pixmap(width, height, pixmap.getFormat()); 79 potPixmap.drawPixmap(pixmap, 0, 0, 0, 0, pixmap.getWidth(), pixmap.getHeight()); 80 pixmap.dispose(); 81 Gdx.app.postRunnable(new Runnable() { 82 @Override 83 public void run () { 84 image = new TextureRegion(new Texture(potPixmap), 0, 0, originalWidth, originalHeight); 85 } 86 }); 87 } 88 } 89 }).start(); 90 91 font = new BitmapFont(); 92 batch = new SpriteBatch(); 93 } 94 95 @Override render()96 public void render () { 97 Gdx.gl.glClearColor(0.2f, 0.2f, 0.2f, 1); 98 Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); 99 100 if (image != null) { 101 batch.begin(); 102 batch.draw(image, 100, 100); 103 batch.end(); 104 } else { 105 batch.begin(); 106 font.draw(batch, "Downloading...", 100, 100); 107 batch.end(); 108 } 109 } 110 } 111
