Java tutorial
//package com.java2s; /** * Copyright 2010 Neuroph Project http://neuroph.sourceforge.net * * 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. */ import java.awt.Color; import java.awt.Font; import java.awt.Graphics2D; import java.awt.RenderingHints; import java.awt.font.FontRenderContext; import java.awt.font.TextLayout; import java.awt.geom.Rectangle2D; import java.awt.image.BufferedImage; public class Main { /** * Creates and returns image from the given text. * @param text input text * @param font text font * @return image with input text */ public static BufferedImage createImageFromText(String text, Font font) { //You may want to change these setting, or make them parameters boolean isAntiAliased = true; boolean usesFractionalMetrics = false; FontRenderContext frc = new FontRenderContext(null, isAntiAliased, usesFractionalMetrics); TextLayout layout = new TextLayout(text, font, frc); Rectangle2D bounds = layout.getBounds(); int w = (int) Math.ceil(bounds.getWidth()); int h = (int) Math.ceil(bounds.getHeight()) + 2; BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB); //for example; Graphics2D g = image.createGraphics(); g.setColor(Color.WHITE); g.fillRect(0, 0, w, h); g.setColor(Color.BLACK); g.setFont(font); Object antiAliased = isAntiAliased ? RenderingHints.VALUE_TEXT_ANTIALIAS_ON : RenderingHints.VALUE_TEXT_ANTIALIAS_OFF; g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, antiAliased); Object fractionalMetrics = usesFractionalMetrics ? RenderingHints.VALUE_FRACTIONALMETRICS_ON : RenderingHints.VALUE_FRACTIONALMETRICS_OFF; g.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, fractionalMetrics); g.drawString(text, (float) -bounds.getX(), (float) -bounds.getY()); g.dispose(); return image; } }