package com.kadang.designer.web.action;import java.awt.Color;import java.awt.Font;import java.awt.FontFormatException;import java.awt.Graphics2D;import java.awt.RenderingHints;import java.awt.font.TextLayout;import java.awt.image.BufferedImage;import java.io.BufferedInputStream;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStream;import javax.imageio.ImageIO;import org.apache.commons.lang.StringUtils;public class DrawImageDemo { public static void main(String[] args) { String fileName = "STLITI.ttf";// 楷体 int bold = 0; // 是否加粗 int italic = 0; // 是否斜体 int size = 100; String text = "春眠不觉晓，\n处处闻啼鸟。\n夜来风雨声，\n花落知多少。"; //String text = "我送检单是\naab,,xxxb\n接口的零啊11食 "; // String text = "花夜处春\n落来处眠\n知风闻不\n多雨啼觉\n少声鸟晓\n。，。，"; // String text = "夜 \n中\n的\n时\n大\nA\n懂\n禁\n小"; // String text = "啊"; // String text = "春a"; int rgb = 125; // 颜色 // 设置字体 Font font = getFont(fileName); font = deriveFont(font, bold, italic, size); // generate font image // BufferedImage img = CreateFontImgWithGraphics(text, rgb, grid, font, // (int)rect.getWidth(), (int)rect.getHeight()); BufferedImage img = CreateFontImgWithGraphics(text, rgb, true, font); // 图片生成路径 File file = new File("F:\\test.jpg"); try { ImageIO.write(img, "JPEG", file); // Iterator iter = ImageIO.getImageWritersByFormatName("PNG"); // ImageWriter writer = (ImageWriter) iter.next(); // ImageWriteParam iwp = writer.getDefaultWriteParam(); // iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT); // iwp.setCompressionQuality(1); // best quality // FileImageOutputStream output = new FileImageOutputStream(file); // writer.setOutput(output); // IIOImage image = new IIOImage(img, null, null); // writer.write(null, image, iwp); // writer.dispose(); } catch (IOException e) { e.printStackTrace(); } } private static Font deriveFont(Font font, int bold, int italic, int size) { int style = Font.PLAIN; if (bold > 0) { style = style | Font.BOLD; } if (italic > 0) { style = style | Font.ITALIC; } return font.deriveFont(style, size); } // 获取字体 private static Font getFont(String fileName) { File file = new File("Z:\\font\\" + fileName); InputStream fi = null; BufferedInputStream fb = null; Font nf = null; try { // 字体文件 fi = new FileInputStream(file); fb = new BufferedInputStream(fi); // 生成字体 nf = Font.createFont(Font.TRUETYPE_FONT, fb); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (FontFormatException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return nf; } private static BufferedImage CreateFontImgWithGraphics(String text, int rgb, boolean isVertical, Font font) { // 字体大小 int fontSize = font.getSize(); // 高、宽比例 float radio = 1.4f; // 文字图片边框 float border = (float) (fontSize * 0.1); // 设置每行的固定高度，用于横排 int line_height = Math.round(fontSize * radio); // 设置每行的固定宽度度，用于竖排 int line_width = Math.round(fontSize * radio); // 文字 String lines[] = text.split("\n"); String line; TextLayout layout; // 计算图片的width,height BufferedImage tmp = new BufferedImage(1, 1, BufferedImage.TYPE_4BYTE_ABGR); Graphics2D gtmp = (Graphics2D) tmp.getGraphics(); // dwh用于根据实际文件来计算图片某一边的长度,dx用于对图片水平方向的空白补齐,dy用于对图片垂直方向的空白补齐 float dwh = 0, dx = 0, dy = 0; for (int i = 0; i < lines.length; i++) { line = lines[i]; if (StringUtils.isNotBlank(line)) { layout = new TextLayout(line, font, gtmp.getFontRenderContext()); dwh = Math.max(layout.getAdvance(), dwh); dy = (float) Math.min(-((isVertical ? fontSize : line_height) - layout.getBounds().getHeight()) / 2, dy); } } // 横排文字:width不固定,height固定; 竖排文字:width固定,height不固定 // 文字图片的宽 int width = Math.round((isVertical ? line_width * lines.length : dwh) + 2 * border); // 文字图片的高 int height = Math.round((isVertical ? dwh : line_height * lines.length) + 2 * border); // 创建文字图片 BufferedImage image = new BufferedImage(width < 1 ? 1 : width, // width height < 1 ? 1 : height, // height BufferedImage.TYPE_4BYTE_ABGR);// RGB mode // get graphics context Graphics2D g = (Graphics2D) image.getGraphics(); g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g.setColor(new Color(rgb)); g.setFont(font); // 初始化第一个字的坐标 float xpos = isVertical ? width : border + dx, ypos = border + dy; // 每行字 for (int i = 0; i < lines.length; i++) { line = lines[i]; if (isVertical) { xpos -= line_width; ypos = border + dy; } else { xpos = border + dx; ypos += line_height; } // 如果该行为空行，直接跳过 if (StringUtils.isBlank(lines[i])) { continue; } // 每个字符 for (int j = 0; j < line.length(); j++) { char c = line.charAt(j); // 用于获取字的该advance layout = new TextLayout(String.valueOf(c), font, g.getFontRenderContext()); g.scale(1.0, 1.0); // 比例 if (c > 32 && c < 126 && isVertical) { g.rotate(Math.PI / 2, xpos, ypos + layout.getAdvance()); g.drawString(String.valueOf(c), xpos , ypos+ layout.getAdvance()); g.rotate(-Math.PI / 2, xpos, ypos + layout.getAdvance()); } else { g.drawString(String.valueOf(c), xpos, isVertical ? ypos + layout.getAdvance() : ypos); } System.out.println(c + ", xy:xpos =" + xpos + ",ypos=" + (ypos + layout.getAdvance())); if (isVertical) { ypos += layout.getAdvance(); } else { xpos += layout.getAdvance(); } } } g.drawString(String.valueOf("a"), 160, 81); System.out.println("width:" + width + ", height:" + height); // g.setStroke(new BasicStroke(4.0f));// 线条粗细 // g.setColor(Color.blue);// 线条颜色 // g.drawLine(440, 0, 440, 580);// 线条起点及终点位置 // g.setStroke(new BasicStroke(4.0f));// 线条粗细 // g.setColor(Color.red);// 线条颜色 // g.drawLine(0, 110, 620, 110);// 线条起点及终点位置 g.dispose(); return image; } static class Rect { private float height; private float width; public Rect() { } public Rect(float height, float width) { super(); this.height = height; this.width = width; } public float getHeight() { return height; } public void setHeight(float height) { this.height = height; } public float getWidth() { return width; } public void setWidth(float width) { this.width = width; } }}
转载于:https://www.cnblogs.com/plf112233/p/3544222.html
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