feat: 计算页边距

src/main/java/com/goeing/printserver/main/utils/PdfPrinter.java

@@ -31,6 +31,10 @@ public class PdfPrinter {
 
     private static final Map<String, MediaSizeName> PAPER_SIZES = new HashMap<>();
     
+    // 装订边距常量（英寸）
+    private static final double BINDING_MARGIN_LEFT = 0.5;  // 左装订额外边距
+    private static final double BINDING_MARGIN_TOP = 0.5;    // 顶装订额外边距
+
     static {
         PAPER_SIZES.put("Letter", MediaSizeName.NA_LETTER);     // 8.5" × 11"
         PAPER_SIZES.put("Legal", MediaSizeName.NA_LEGAL);       // 8.5" × 14"
@@ -77,9 +81,7 @@ public class PdfPrinter {
 
             String color = option.getColor();
             //如果是封面彩打 那么要把封面和 内容分开打印  就做两个打印任务 先打封面 再打内容
-            if (color.equalsIgnoreCase("Cover Letter Color Only")){
+            if ("Cover Letter Color Only".equals(color)) {
-
-
                 PDDocument cover = new PDDocument();
                 cover.addPage(document.getPage(0));
                 cover.close();
@@ -87,7 +89,7 @@ public class PdfPrinter {
                 PDDocument content = new PDDocument();
                 for (int i = 0; i < document.getNumberOfPages(); i++) {
                     //第一页是封面
-                    if (i==0){
+                    if (i == 0) {
                         continue;
                     }
                     content.addPage(document.getPage(i));
@@ -99,7 +101,10 @@ public class PdfPrinter {
                 option.setColor("black & white");
                 setPageStyle(content, job, option);
 
-            }else {
+            } else {
+                if (StrUtil.containsIgnoreCase(color,"color")){
+                    option.setColor("color");
+                }
                 //全部打印
                 setPageStyle(document, job, option);
             }
@@ -265,8 +270,8 @@ public class PdfPrinter {
         // 获取边距（默认为0.5英寸）
         double marginInches = option.getMargin();
         
-        // 创建并返回Paper对象
+        // 创建并返回Paper对象，考虑装订选项
-        return createPaper(dimensions[0], dimensions[1], marginInches);
+        return createPaper(dimensions[0], dimensions[1], marginInches, option.getPosition());
     }
     
     /**
@@ -382,22 +387,52 @@ public class PdfPrinter {
      * 
      * @param width 纸张宽度（点）
      * @param height 纸张高度（点）
-     * @param marginInches 边距（英寸）
+     * @param marginInches 基础边距（英寸）
+     * @param bindingOption 装订选项
      * @return 配置好的Paper对象
      */
-    private static Paper createPaper(double width, double height, double marginInches) {
+    private static Paper createPaper(double width, double height, double marginInches, String bindingOption) {
         Paper paper = new Paper();
         paper.setSize(width, height);
         
+        // 计算各边的边距，考虑装订选项
+        double leftMargin = marginInches;
+        double topMargin = marginInches;
+        double rightMargin = marginInches;
+        double bottomMargin = marginInches;
+        
+        // 根据装订选项调整边距
+        if (bindingOption != null) {
+            switch (bindingOption) {
+                case "Left":
+                    leftMargin += BINDING_MARGIN_LEFT;
+                    break;
+                case "Top":
+                    topMargin += BINDING_MARGIN_TOP;
+                    break;
+                case "Staple":
+                    leftMargin += BINDING_MARGIN_LEFT;
+                    topMargin += BINDING_MARGIN_TOP;
+                    break;
+                case "None":
+                default:
+                    // 不调整边距
+                    break;
+            }
+        }
+        
         // 将边距从英寸转换为点
-        double marginPoints = marginInches * 72;
+        double leftMarginPoints = leftMargin * 72;
+        double topMarginPoints = topMargin * 72;
+        double rightMarginPoints = rightMargin * 72;
+        double bottomMarginPoints = bottomMargin * 72;
         
         // 设置可打印区域
         paper.setImageableArea(
-            marginPoints, 
+            leftMarginPoints, 
-            marginPoints, 
+            topMarginPoints, 
-            width - 2 * marginPoints, 
+            width - leftMarginPoints - rightMarginPoints, 
-            height - 2 * marginPoints
+            height - topMarginPoints - bottomMarginPoints
         );
         
         return paper;