feat: 水印支持页边距控制

laws-module-system/src/main/java/com/jero/modules/system/util/SysWaterMarkUtil.java

@@ -57,6 +57,13 @@ public class SysWaterMarkUtil {
     private int degree;
 
 
+    @Value("${watermark.margin.left}")
+    private float marginLeft;
+
+    @Value("${watermark.margin.top}")
+    private float marginTop;
+
+
     public List<String> getWaterMarkConfig() {
         LoginUser loginUser = UserUtils.getLoginUser();
         if (loginUser == null) {
@@ -104,8 +111,8 @@ public class SysWaterMarkUtil {
             // 计算两行文本的总高度
             float totalTextHeight = (dynamicFontSize + lineSpacing) * (watermarkText.size() - 1);
 
-            for (float xPosition = pageSize.getLowerLeftX(); xPosition <= pageWidth; xPosition += xStep) {
-                for (float yPosition = pageSize.getLowerLeftY(); yPosition <= pageHeight; yPosition += yStep) {
+            for (float xPosition = pageSize.getLowerLeftX() + marginLeft; xPosition <= pageWidth - marginLeft; xPosition += xStep) {
+                for (float yPosition = pageSize.getLowerLeftY() + marginTop; yPosition <= pageHeight - marginTop; yPosition += yStep) {
                     try (PDPageContentStream contentStream = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.APPEND, true, true)) {
                         contentStream.setGraphicsStateParameters(graphicsState);
                         contentStream.setNonStrokingColor(color);