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add FontUtil
This commit is contained in:
Looly
parent
7c803950ef
commit
73b2f75de2
@ -16,6 +16,7 @@
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* 【core 】 BeanValuePovider转换失败时，返回原数据，而非null
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* 【core 】 支持BeanUtil.toBean(object, Map.class)转换（issue#I1I4HC@Gitee）
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* 【core 】 MapUtil和CollUtil增加clear方法（issue#I1I4HC@Gitee）
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* 【core 】 增加FontUtil，可定义pressText是否从中间（issue#I1HSWU@Gitee）
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### Bug修复
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* 【core 】 修复SimpleCache死锁问题（issue#I1HOKB@Gitee）
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123
hutool-core/src/main/java/cn/hutool/core/img/FontUtil.java
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123
hutool-core/src/main/java/cn/hutool/core/img/FontUtil.java
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@ -0,0 +1,123 @@
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package cn.hutool.core.img;
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import cn.hutool.core.exceptions.UtilException;
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import cn.hutool.core.io.IORuntimeException;
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import sun.font.FontDesignMetrics;
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import java.awt.Dimension;
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import java.awt.Font;
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import java.awt.FontFormatException;
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import java.awt.FontMetrics;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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/**
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* AWT中字体相关工具类
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*
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* @author looly
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* @since 5.3.6
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*/
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public class FontUtil {
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/**
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* 创建默认字体
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*
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* @return 默认字体
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*/
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public static Font createFont() {
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return new Font(null);
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}
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/**
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* 创建SansSerif字体
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*
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* @param size 字体大小
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* @return 字体
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*/
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public static Font createSansSerifFont(int size) {
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return createFont(Font.SANS_SERIF, size);
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}
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/**
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* 创建指定名称的字体
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*
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* @param name 字体名称
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* @param size 字体大小
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* @return 字体
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*/
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public static Font createFont(String name, int size) {
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return new Font(name, Font.PLAIN, size);
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}
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/**
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* 根据文件创建字体<br>
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* 首先尝试创建{@link Font#TRUETYPE_FONT}字体，此类字体无效则创建{@link Font#TYPE1_FONT}
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*
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* @param fontFile 字体文件
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* @return {@link Font}
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*/
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public static Font createFont(File fontFile) {
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try {
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return Font.createFont(Font.TRUETYPE_FONT, fontFile);
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} catch (FontFormatException e) {
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// True Type字体无效时使用Type1字体
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try {
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return Font.createFont(Font.TYPE1_FONT, fontFile);
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} catch (Exception e1) {
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throw new UtilException(e);
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}
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} catch (IOException e) {
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throw new IORuntimeException(e);
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}
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}
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/**
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* 根据文件创建字体<br>
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* 首先尝试创建{@link Font#TRUETYPE_FONT}字体，此类字体无效则创建{@link Font#TYPE1_FONT}
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*
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* @param fontStream 字体流
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* @return {@link Font}
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*/
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public static Font createFont(InputStream fontStream) {
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try {
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return Font.createFont(Font.TRUETYPE_FONT, fontStream);
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} catch (FontFormatException e) {
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// True Type字体无效时使用Type1字体
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try {
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return Font.createFont(Font.TYPE1_FONT, fontStream);
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} catch (Exception e1) {
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throw new UtilException(e1);
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}
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} catch (IOException e) {
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throw new IORuntimeException(e);
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}
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}
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/**
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* 获得字体对应字符串的长宽信息
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*
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* @param font 字体
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* @param str 字符串
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* @return 长宽信息
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*/
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public static Dimension getDimension(Font font, String str) {
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final FontMetrics metrics = FontDesignMetrics.getMetrics(font);
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return getDimension(FontDesignMetrics.getMetrics(font), str);
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}
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/**
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* 获得字体对应字符串的长宽信息
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*
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* @param metrics {@link FontMetrics}
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* @param str 字符串
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* @return 长宽信息
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*/
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public static Dimension getDimension(FontMetrics metrics, String str) {
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final int width = metrics.stringWidth(str);
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final int height = metrics.getAscent() - metrics.getLeading() - metrics.getDescent();
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return new Dimension(width, height);
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}
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}
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@ -1,16 +1,23 @@
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package cn.hutool.core.img;
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import cn.hutool.core.util.ObjectUtil;
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import java.awt.AlphaComposite;
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.Font;
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import java.awt.FontMetrics;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Image;
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import java.awt.Point;
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import java.awt.Rectangle;
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import java.awt.RenderingHints;
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import java.awt.image.BufferedImage;
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/**
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* {@link Graphics}相关工具类
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*
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*
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* @author looly
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* @since 4.5.2
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*/
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@ -18,7 +25,7 @@ public class GraphicsUtil {
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/**
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* 创建{@link Graphics2D}
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*
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*
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* @param image {@link BufferedImage}
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* @param color {@link Color}背景颜色以及当前画笔颜色，{@code null}表示不设置背景色
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* @return {@link Graphics2D}
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@ -26,8 +33,8 @@ public class GraphicsUtil {
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*/
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public static Graphics2D createGraphics(BufferedImage image, Color color) {
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final Graphics2D g = image.createGraphics();
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if(null != color) {
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if (null != color) {
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// 填充背景
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g.setColor(color);
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g.fillRect(0, 0, image.getWidth(), image.getHeight());
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@ -39,8 +46,8 @@ public class GraphicsUtil {
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/**
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* 获取文字居中高度的Y坐标（距离上边距距离）<br>
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* 此方法依赖FontMetrics，如果获取失败，默认为背景高度的1/3
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*
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* @param g {@link Graphics2D}画笔
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*
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* @param g {@link Graphics2D}画笔
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* @param backgroundHeight 背景高度
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* @return 最小高度，-1表示无法获取
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* @since 4.5.17
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@ -64,11 +71,11 @@ public class GraphicsUtil {
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/**
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* 绘制字符串，使用随机颜色，默认抗锯齿
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*
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* @param g {@link Graphics}画笔
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* @param str 字符串
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* @param font 字体
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* @param width 字符串总宽度
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*
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* @param g {@link Graphics}画笔
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* @param str 字符串
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* @param font 字体
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* @param width 字符串总宽度
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* @param height 字符串背景高度
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* @return 画笔对象
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* @since 4.5.10
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@ -79,12 +86,12 @@ public class GraphicsUtil {
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/**
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* 绘制字符串，默认抗锯齿
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*
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* @param g {@link Graphics}画笔
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* @param str 字符串
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* @param font 字体
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* @param color 字体颜色，{@code null} 表示使用随机颜色（每个字符单独随机）
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* @param width 字符串背景的宽度
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*
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* @param g {@link Graphics}画笔
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* @param str 字符串
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* @param font 字体
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* @param color 字体颜色，{@code null} 表示使用随机颜色（每个字符单独随机）
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* @param width 字符串背景的宽度
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* @param height 字符串背景的高度
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* @return 画笔对象
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* @since 4.5.10
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@ -98,7 +105,7 @@ public class GraphicsUtil {
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g.setFont(font);
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// 文字高度（必须在设置字体后调用）
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int midY = GraphicsUtil.getCenterY(g, height);
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int midY = getCenterY(g, height);
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if (null != color) {
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g.setColor(color);
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}
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@ -115,4 +122,97 @@ public class GraphicsUtil {
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return g;
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}
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/**
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* 绘制字符串，默认抗锯齿。<br>
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* 此方法定义一个矩形区域和坐标，文字基于这个区域中间偏移x,y绘制。
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*
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* @param g {@link Graphics}画笔
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* @param str 字符串
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* @param font 字体，字体大小决定了在背景中绘制的大小
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* @param color 字体颜色，{@code null} 表示使用黑色
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* @param rectangle 字符串绘制坐标和大小，此对象定义了绘制字符串的区域大小和偏移位置
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* @return 画笔对象
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* @since 4.5.10
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*/
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public static Graphics drawString(Graphics g, String str, Font font, Color color, Rectangle rectangle) {
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// 背景长宽
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final int backgroundWidth = rectangle.width;
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final int backgroundHeight = rectangle.height;
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//获取字符串本身的长宽
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Dimension dimension;
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try {
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dimension = FontUtil.getDimension(g.getFontMetrics(font), str);
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} catch (Exception e) {
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// 此处报告bug某些情况下会抛出IndexOutOfBoundsException，在此做容错处理
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dimension = new Dimension(backgroundWidth / 3, backgroundHeight / 3);
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}
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rectangle.setSize(dimension.width, dimension.height);
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final Point point = ImgUtil.getPointBaseCentre(rectangle, backgroundWidth, backgroundHeight);
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return drawString(g, str, font, color, point);
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}
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/**
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* 绘制字符串，默认抗锯齿
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*
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* @param g {@link Graphics}画笔
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* @param str 字符串
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* @param font 字体，字体大小决定了在背景中绘制的大小
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* @param color 字体颜色，{@code null} 表示使用黑色
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* @param point 绘制字符串的位置坐标
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* @return 画笔对象
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* @since 5.3.6
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*/
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public static Graphics drawString(Graphics g, String str, Font font, Color color, Point point) {
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// 抗锯齿
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if (g instanceof Graphics2D) {
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((Graphics2D) g).setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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}
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g.setFont(font);
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g.setColor(ObjectUtil.defaultIfNull(color, Color.BLACK));
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g.drawString(str, point.x, point.y);
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return g;
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}
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/**
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* 绘制图片
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*
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* @param g 画笔
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* @param img 要绘制的图片
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* @param point 绘制的位置，基于左上角
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* @return 画笔对象
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*/
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public static Graphics drawImg(Graphics g, Image img, Point point) {
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return drawImg(g, img,
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new Rectangle(point.x, point.y, img.getWidth(null), img.getHeight(null)));
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}
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/**
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* 绘制图片
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*
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* @param g 画笔
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* @param img 要绘制的图片
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* @param rectangle 矩形对象，表示矩形区域的x，y，width，height,，基于左上角
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* @return 画笔对象
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*/
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public static Graphics drawImg(Graphics g, Image img, Rectangle rectangle) {
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g.drawImage(img, rectangle.x, rectangle.y, rectangle.width, rectangle.height, null); // 绘制切割后的图
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return g;
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}
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/**
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* 设置画笔透明度
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*
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* @param g 画笔
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* @param alpha 透明度：alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字
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* @return 画笔
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*/
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public static Graphics2D setAlpha(Graphics2D g, float alpha){
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g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
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return g;
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}
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}
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@ -15,9 +15,9 @@ import javax.imageio.stream.ImageOutputStream;
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import java.awt.AlphaComposite;
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import java.awt.Color;
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import java.awt.Font;
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import java.awt.FontMetrics;
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import java.awt.Graphics2D;
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import java.awt.Image;
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import java.awt.Point;
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import java.awt.Rectangle;
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import java.awt.RenderingHints;
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import java.awt.Toolkit;
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@ -145,13 +145,13 @@ public class Img implements Serializable {
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/**
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* 构造
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*
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* @param srcImage 来源图片
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* @param srcImage 来源图片
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* @param targetImageType 目标图片类型
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* @since 5.0.7
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*/
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public Img(BufferedImage srcImage, String targetImageType) {
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this.srcImage = srcImage;
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if(null == targetImageType){
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if (null == targetImageType) {
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targetImageType = ImgUtil.IMAGE_TYPE_JPG;
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}
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this.targetImageType = targetImageType;
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@ -312,7 +312,7 @@ public class Img implements Serializable {
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Graphics2D g = image.createGraphics();
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// 设置背景
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if(null != fixedColor){
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if (null != fixedColor) {
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g.setBackground(fixedColor);
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g.clearRect(0, 0, width, height);
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}
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@ -450,20 +450,22 @@ public class Img implements Serializable {
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if (null == font) {
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// 默认字体
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font = new Font("Courier", Font.PLAIN, (int) (targetImage.getHeight() * 0.75));
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font = FontUtil.createSansSerifFont((int) (targetImage.getHeight() * 0.75));
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}
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// 抗锯齿
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g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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g.setColor(color);
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g.setFont(font);
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// 透明度
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g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
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// 在指定坐标绘制水印文字
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final FontMetrics metrics = g.getFontMetrics(font);
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final int textLength = metrics.stringWidth(pressText);
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final int textHeight = metrics.getAscent() - metrics.getLeading() - metrics.getDescent();
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g.drawString(pressText, Math.abs(targetImage.getWidth() - textLength) / 2 + x, Math.abs(targetImage.getHeight() + textHeight) / 2 + y);
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// 绘制
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if (positionBaseCentre) {
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// 基于中心绘制
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GraphicsUtil.drawString(g, pressText, font, color,
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new Rectangle(x, y, targetImage.getWidth(), targetImage.getHeight()));
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} else {
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// 基于左上角绘制
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GraphicsUtil.drawString(g, pressText, font, color,
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new Point(x, y));
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}
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g.dispose();
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this.targetImage = targetImage;
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@ -497,7 +499,6 @@ public class Img implements Serializable {
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public Img pressImage(Image pressImg, Rectangle rectangle, float alpha) {
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final Image targetImg = getValidSrcImg();
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fixRectangle(rectangle, targetImg.getWidth(null), targetImg.getHeight(null));
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this.targetImage = draw(ImgUtil.toBufferedImage(targetImg), pressImg, rectangle, alpha);
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return this;
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}
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@ -619,12 +620,21 @@ public class Img implements Serializable {
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* @param backgroundImg 背景图片
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* @param img 要绘制的图片
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* @param rectangle 矩形对象，表示矩形区域的x，y，width，height，x,y从背景图片中心计算
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* @param alpha 透明度：alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字
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* @return 绘制后的背景
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*/
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private static BufferedImage draw(BufferedImage backgroundImg, Image img, Rectangle rectangle, float alpha) {
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private BufferedImage draw(BufferedImage backgroundImg, Image img, Rectangle rectangle, float alpha) {
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final Graphics2D g = backgroundImg.createGraphics();
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g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));
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g.drawImage(img, rectangle.x, rectangle.y, rectangle.width, rectangle.height, null); // 绘制切割后的图
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GraphicsUtil.setAlpha(g, alpha);
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Point point;
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if (positionBaseCentre) {
|
||||
point = ImgUtil.getPointBaseCentre(rectangle, backgroundImg.getWidth(), backgroundImg.getHeight());
|
||||
} else {
|
||||
point = new Point(rectangle.x, rectangle.y);
|
||||
}
|
||||
GraphicsUtil.drawImg(g, img, point);
|
||||
|
||||
g.dispose();
|
||||
return backgroundImg;
|
||||
}
|
||||
|
||||
@ -2,7 +2,6 @@ package cn.hutool.core.img;
|
||||
|
||||
import cn.hutool.core.codec.Base64;
|
||||
import cn.hutool.core.convert.Convert;
|
||||
import cn.hutool.core.exceptions.UtilException;
|
||||
import cn.hutool.core.io.FileUtil;
|
||||
import cn.hutool.core.io.IORuntimeException;
|
||||
import cn.hutool.core.io.IoUtil;
|
||||
@ -25,10 +24,10 @@ import javax.imageio.stream.ImageInputStream;
|
||||
import javax.imageio.stream.ImageOutputStream;
|
||||
import java.awt.Color;
|
||||
import java.awt.Font;
|
||||
import java.awt.FontFormatException;
|
||||
import java.awt.Graphics;
|
||||
import java.awt.Graphics2D;
|
||||
import java.awt.Image;
|
||||
import java.awt.Point;
|
||||
import java.awt.Rectangle;
|
||||
import java.awt.font.FontRenderContext;
|
||||
import java.awt.geom.AffineTransform;
|
||||
@ -1377,18 +1376,7 @@ public class ImgUtil {
|
||||
* @since 3.0.9
|
||||
*/
|
||||
public static Font createFont(File fontFile) {
|
||||
try {
|
||||
return Font.createFont(Font.TRUETYPE_FONT, fontFile);
|
||||
} catch (FontFormatException e) {
|
||||
// True Type字体无效时使用Type1字体
|
||||
try {
|
||||
return Font.createFont(Font.TYPE1_FONT, fontFile);
|
||||
} catch (Exception e1) {
|
||||
throw new UtilException(e);
|
||||
}
|
||||
} catch (IOException e) {
|
||||
throw new IORuntimeException(e);
|
||||
}
|
||||
return FontUtil.createFont(fontFile);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -1400,18 +1388,7 @@ public class ImgUtil {
|
||||
* @since 3.0.9
|
||||
*/
|
||||
public static Font createFont(InputStream fontStream) {
|
||||
try {
|
||||
return Font.createFont(Font.TRUETYPE_FONT, fontStream);
|
||||
} catch (FontFormatException e) {
|
||||
// True Type字体无效时使用Type1字体
|
||||
try {
|
||||
return Font.createFont(Font.TYPE1_FONT, fontStream);
|
||||
} catch (Exception e1) {
|
||||
throw new UtilException(e1);
|
||||
}
|
||||
} catch (IOException e) {
|
||||
throw new IORuntimeException(e);
|
||||
}
|
||||
return FontUtil.createFont(fontStream);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -1917,4 +1894,20 @@ public class ImgUtil {
|
||||
}
|
||||
return new Color(random.nextInt(255), random.nextInt(255), random.nextInt(255));
|
||||
}
|
||||
|
||||
/**
|
||||
* 获得修正后的矩形坐标位置，变为以背景中心为基准坐标（即x,y == 0,0时，处于背景正中）
|
||||
*
|
||||
* @param rectangle 矩形
|
||||
* @param backgroundWidth 参考宽（背景宽）
|
||||
* @param backgroundHeight 参考高（背景高）
|
||||
* @return 修正后的{@link Point}
|
||||
* @since 5.3.6
|
||||
*/
|
||||
public static Point getPointBaseCentre(Rectangle rectangle, int backgroundWidth, int backgroundHeight) {
|
||||
return new Point(
|
||||
rectangle.x + (Math.abs(backgroundWidth - rectangle.width) / 2), //
|
||||
rectangle.y + (Math.abs(backgroundHeight - rectangle.height) / 2)//
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user