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优化QrCodeUtil

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This commit is contained in:
TomXin
2022-08-27 16:01:18 +08:00
parent 4e53873d81
commit e78273af7f
2 changed files with 35 additions and 44 deletions
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31
hutool-extra/src/main/java/cn/hutool/extra/qrcode/QrCodeUtil.java
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@@ -5,11 +5,11 @@ import cn.hutool.core.img.Img;
import cn.hutool.core.img.ImgUtil;
import cn.hutool.core.io.FileUtil;
import cn.hutool.core.io.IoUtil;
import cn.hutool.core.lang.ansi.Ansi8BitColor;
import cn.hutool.core.lang.ansi.AnsiColorWrapper;
import cn.hutool.core.lang.ansi.AnsiColors;
import cn.hutool.core.lang.ansi.AnsiElement;
import cn.hutool.core.lang.ansi.AnsiEncoder;
import cn.hutool.core.util.CharsetUtil;
import cn.hutool.core.util.NumberUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.core.util.URLUtil;
import com.google.zxing.*;
@@ -41,6 +41,7 @@ public class QrCodeUtil {
public static final String QR_TYPE_SVG = "svg";// SVG矢量图格式
public static final String QR_TYPE_TXT = "txt";// Ascii Art字符画文本
private static final AnsiColors ansiColors= new AnsiColors(AnsiColors.BitDepth.EIGHT);
/**
* 生成代 logo 图片的 Base64 编码格式的二维码，以 String 形式表示
@@ -631,8 +632,8 @@ public class QrCodeUtil {
final int height = bitMatrix.getHeight();
final AnsiElement foreground = qrConfig.foreColor == null ? null : Ansi8BitColor.foreground(rgbToAnsi8BitValue(qrConfig.foreColor));
final AnsiElement background = qrConfig.backColor == null ? null : Ansi8BitColor.background(rgbToAnsi8BitValue(qrConfig.backColor));
final AnsiElement foreground = qrConfig.foreColor == null ? null : rgbToAnsi8BitElement(qrConfig.foreColor, AnsiColorWrapper.ForeOrBack.FORE);
final AnsiElement background = qrConfig.backColor == null ? null : rgbToAnsi8BitElement(qrConfig.backColor, AnsiColorWrapper.ForeOrBack.BACK);
StringBuilder builder = new StringBuilder();
for (int i = 0; i <= height; i += 2) {
@@ -655,26 +656,16 @@ public class QrCodeUtil {
return builder.toString();
}
/**
* rgb转Ansi8Bit值
/* *//**
* rgb转AnsiElement
*
* @param rgb rgb颜色值
* @return Ansi8bit颜色值
* @param foreOrBack 前景or背景
* @return AnsiElement
* @since 5.8.6
*/
private static int rgbToAnsi8BitValue(int rgb) {
final int r = (rgb >> 16) & 0xff;
final int g = (rgb >> 8) & 0xff;
final int b = (rgb) & 0xff;
final int l;
if (r == g && g == b) {
final int i = (int) (NumberUtil.div(NumberUtil.mul(r - 10.625, 23), (255 - 10.625), 0));
l = i >= 0 ? 232 + i : 0;
} else {
l = 16 + (int) (36 * NumberUtil.div(NumberUtil.mul(r, 5), 255, 0)) + (int) (6.0 * (g / 256.0 * 6.0)) + (int) (b / 256.0 * 6.0);
}
return l;
private static AnsiElement rgbToAnsi8BitElement(int rgb,AnsiColorWrapper.ForeOrBack foreOrBack) {
return ansiColors.findClosest(new Color(rgb)).toAnsiElement(foreOrBack);
}