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防止设置色差过大，导致循环次数过多，增加默认色差方法

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This commit is contained in:
chenzecheng
2024-08-09 09:40:28 +08:00
parent 4c00f6adb2
commit a6f0193e19
4 changed files with 80 additions and 6 deletions
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40
hutool-captcha/src/test/java/cn/hutool/captcha/CaptchaUtilTest.java
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@@ -26,17 +26,26 @@ public class CaptchaUtilTest {
@Test
@Ignore
public void drawStringColourfulTest() {
public void drawStringColourfulColorDistanceTest() {
for(int i = 0; i < 10; i++) {
AbstractCaptcha lineCaptcha = new TestLineCaptcha(200, 100, 5, 10);
lineCaptcha.write("d:/captcha/line"+i+".png");
AbstractCaptcha lineCaptcha = new TestLineCaptchaColorDistance(200, 100, 5, 10);
lineCaptcha.write("d:/captcha/line1-"+i+".png");
}
}
static class TestLineCaptcha extends AbstractCaptcha{
@Test
@Ignore
public void drawStringColourfulDefaultColorDistanceTest() {
for(int i = 0; i < 10; i++) {
AbstractCaptcha lineCaptcha = new TestLineCaptchaColorDistanceDefaultColorDistance(200, 100, 5, 10);
lineCaptcha.write("d:/captcha/line2-"+i+".png");
}
}
static class TestLineCaptchaColorDistance extends AbstractCaptcha{
private static final long serialVersionUID = -558846929114465692L;
public TestLineCaptcha(int width, int height, int codeCount, int interfereCount) {
public TestLineCaptchaColorDistance(int width, int height, int codeCount, int interfereCount) {
super(width, height, codeCount, interfereCount);
}
@@ -62,11 +71,12 @@ public class CaptchaUtilTest {
* @param g {@link Graphics}画笔
* @param code 验证码
*/
private void drawString(Graphics2D g, String code) {
protected void drawString(Graphics2D g, String code) {
// 指定透明度
if (null != this.textAlpha) {
g.setComposite(this.textAlpha);
}
// 自定义与背景颜色的色差值，200是基于Color.WHITE较为居中的值
GraphicsUtil.drawStringColourful(g, code, this.font, this.width, this.height,Color.WHITE,200);
}
@@ -89,4 +99,22 @@ public class CaptchaUtilTest {
}
// ----------------------------------------------------------------------------------------------------- Private method start
}
static class TestLineCaptchaColorDistanceDefaultColorDistance extends TestLineCaptchaColorDistance {
public TestLineCaptchaColorDistanceDefaultColorDistance(int width, int height, int codeCount, int interfereCount) {
super(width, height, codeCount, interfereCount);
}
@Override
protected void drawString(Graphics2D g, String code) {
// 指定透明度
if (null != this.textAlpha) {
g.setComposite(this.textAlpha);
}
// 使用默认色差设置
GraphicsUtil.drawStringColourful(g, code, this.font, this.width, this.height,Color.WHITE);
}
}
}