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feat: support '\n' literal in add watermark

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This commit is contained in:
sbplat 2024-01-31 00:54:51 -05:00
parent 53afb865c5
commit 2d37c707e2
1 changed files with 15 additions and 3 deletions
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18
src/main/java/stirling/software/SPDF/controller/api/security/WatermarkController.java
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@ -155,9 +155,16 @@ public class WatermarkController {
contentStream.setFont(font, fontSize); contentStream.setFont(font, fontSize);
contentStream.setNonStrokingColor(Color.LIGHT_GRAY); contentStream.setNonStrokingColor(Color.LIGHT_GRAY);
String[] textLines = watermarkText.split("\\\\n");
float maxLineWidth = 0;
for (int i = 0; i < textLines.length; ++i) {
maxLineWidth = Math.max(maxLineWidth, font.getStringWidth(textLines[i]));
}
// Set size and location of text watermark // Set size and location of text watermark
float watermarkWidth = widthSpacer + font.getStringWidth(watermarkText) * fontSize / 1000; float watermarkWidth = widthSpacer + maxLineWidth * fontSize / 1000;
float watermarkHeight = heightSpacer + fontSize; float watermarkHeight = heightSpacer + fontSize * textLines.length;
float pageWidth = page.getMediaBox().getWidth(); float pageWidth = page.getMediaBox().getWidth();
float pageHeight = page.getMediaBox().getHeight(); float pageHeight = page.getMediaBox().getHeight();
int watermarkRows = (int) (pageHeight / watermarkHeight + 1); int watermarkRows = (int) (pageHeight / watermarkHeight + 1);
@ -172,7 +179,12 @@ public class WatermarkController {
(float) Math.toRadians(rotation), (float) Math.toRadians(rotation),
j * watermarkWidth, j * watermarkWidth,
i * watermarkHeight)); i * watermarkHeight));
contentStream.showText(watermarkText);
for (int k = 0; k < textLines.length; ++k) {
contentStream.showText(textLines[k]);
contentStream.newLineAtOffset(0, -fontSize);
}
contentStream.endText(); contentStream.endText();
} }
} }