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 com.badlogic.gdx.Files.FileType; 20 import com.badlogic.gdx.Gdx; 21 import com.badlogic.gdx.InputAdapter; 22 import com.badlogic.gdx.graphics.Color; 23 import com.badlogic.gdx.graphics.GL20; 24 import com.badlogic.gdx.graphics.Texture; 25 import com.badlogic.gdx.graphics.g2d.BitmapFont; 26 import com.badlogic.gdx.graphics.g2d.BitmapFontCache; 27 import com.badlogic.gdx.graphics.g2d.GlyphLayout; 28 import com.badlogic.gdx.graphics.g2d.Sprite; 29 import com.badlogic.gdx.graphics.g2d.SpriteBatch; 30 import com.badlogic.gdx.tests.utils.GdxTest; 31 import com.badlogic.gdx.utils.Align; 32 33 /** Shows how to align single line, wrapped, and multi line text within a rectangle. */ 34 public class BitmapFontAlignmentTest extends GdxTest { 35 private SpriteBatch spriteBatch; 36 private Texture texture; 37 private BitmapFont font; 38 private BitmapFontCache cache; 39 private Sprite logoSprite; 40 int renderMode; 41 GlyphLayout layout; 42 43 @Override create()44 public void create () { 45 Gdx.input.setInputProcessor(new InputAdapter() { 46 public boolean touchDown (int x, int y, int pointer, int newParam) { 47 renderMode = (renderMode + 1) % 6; 48 return false; 49 } 50 }); 51 52 spriteBatch = new SpriteBatch(); 53 texture = new Texture(Gdx.files.internal("data/badlogic.jpg")); 54 logoSprite = new Sprite(texture); 55 logoSprite.setColor(1, 1, 1, 0.6f); 56 logoSprite.setBounds(50, 100, 400, 100); 57 58 font = new BitmapFont(Gdx.files.getFileHandle("data/verdana39.fnt", FileType.Internal), Gdx.files.getFileHandle( 59 "data/verdana39.png", FileType.Internal), false); 60 cache = font.newFontCache(); 61 layout = new GlyphLayout(); 62 } 63 64 @Override render()65 public void render () { 66 Gdx.gl.glClearColor(0.7f, 0, 0, 1); 67 Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); 68 spriteBatch.begin(); 69 logoSprite.draw(spriteBatch); 70 switch (renderMode) { 71 case 0: 72 renderSingleLine(); 73 break; 74 case 1: 75 renderSingleLineCached(); 76 break; 77 case 2: 78 renderWrapped(); 79 break; 80 case 3: 81 renderWrappedCached(); 82 break; 83 case 4: 84 renderMultiLine(); 85 break; 86 case 5: 87 renderMultiLineCached(); 88 break; 89 } 90 spriteBatch.end(); 91 } 92 renderSingleLine()93 private void renderSingleLine () { 94 String text = "Single Line"; 95 float x = logoSprite.getX(); 96 float y = logoSprite.getY(); 97 float width = logoSprite.getWidth(); 98 float height = logoSprite.getHeight(); 99 100 layout.setText(font, text); 101 x += width / 2 - layout.width / 2; 102 y += height / 2 + layout.height / 2; 103 104 font.draw(spriteBatch, text, x, y); 105 } 106 renderSingleLineCached()107 private void renderSingleLineCached () { 108 String text = "Single Line Cached"; 109 float x = logoSprite.getX(); 110 float y = logoSprite.getY(); 111 float width = logoSprite.getWidth(); 112 float height = logoSprite.getHeight(); 113 114 // Obviously you wouldn't set the cache text every frame in real code. 115 GlyphLayout layout = cache.setText(text, 0, 0); 116 cache.setColors(Color.BLUE, 1, 4); 117 118 x += width / 2 - layout.width / 2; 119 y += height / 2 + layout.height / 2; 120 cache.setPosition(x, y); 121 122 cache.draw(spriteBatch); 123 } 124 renderWrapped()125 private void renderWrapped () { 126 String text = "Wrapped Wrapped Wrapped Wrapped"; 127 float x = logoSprite.getX(); 128 float y = logoSprite.getY(); 129 float width = logoSprite.getWidth(); 130 float height = logoSprite.getHeight(); 131 132 layout.setText(font, text, Color.WHITE, width, Align.left, true); 133 x += width / 2 - layout.width / 2; 134 y += height / 2 + layout.height / 2; 135 136 font.draw(spriteBatch, text, x, y, width, Align.left, true); 137 138 // More efficient to draw the layout used for bounds: 139 // font.draw(spriteBatch, layout, x, y); 140 141 // Note that wrapped text can be aligned: 142 // font.draw(spriteBatch, text, x, y, width, Align.center, true); 143 } 144 renderWrappedCached()145 private void renderWrappedCached () { 146 String text = "Wrapped Cached Wrapped Cached"; 147 float x = logoSprite.getX(); 148 float y = logoSprite.getY(); 149 float width = logoSprite.getWidth(); 150 float height = logoSprite.getHeight(); 151 152 // Obviously you wouldn't set the cache text every frame in real code. 153 GlyphLayout layout = cache.setText(text, 0, 0, width, Align.left, true); 154 155 // Note that wrapped text can be aligned: 156 // cache.setWrappedText(text, 0, 0, width, HAlignment.CENTER); 157 158 x += width / 2 - layout.width / 2; 159 y += height / 2 + layout.height / 2; 160 cache.setPosition(x, y); 161 162 cache.draw(spriteBatch); 163 } 164 renderMultiLine()165 private void renderMultiLine () { 166 String text = "Multi\nLine"; 167 float x = logoSprite.getX(); 168 float y = logoSprite.getY(); 169 float width = logoSprite.getWidth(); 170 float height = logoSprite.getHeight(); 171 172 layout.setText(font, text); 173 x += width / 2 - layout.width / 2; 174 y += height / 2 + layout.height / 2; 175 176 font.draw(spriteBatch, text, x, y); 177 178 // Note that multi line text can be aligned: 179 // font.draw(spriteBatch, text, x, y, width, Align.center, false); 180 } 181 renderMultiLineCached()182 private void renderMultiLineCached () { 183 String text = "Multi Line\nCached"; 184 int lines = 2; 185 float x = logoSprite.getX(); 186 float y = logoSprite.getY(); 187 float width = logoSprite.getWidth(); 188 float height = logoSprite.getHeight(); 189 190 // Obviously you wouldn't set the cache text every frame in real code. 191 GlyphLayout layout = cache.setText(text, 0, 0); 192 193 // Note that multi line text can be aligned: 194 // cache.setText(text, 0, 0, width, Align.center, false); 195 196 x += width / 2 - layout.width / 2; 197 y += height / 2 + layout.height / 2; 198 cache.setPosition(x, y); 199 200 cache.draw(spriteBatch); 201 } 202 203 @Override dispose()204 public void dispose () { 205 spriteBatch.dispose(); 206 font.dispose(); 207 texture.dispose(); 208 } 209 } 210
