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added support for new line break in stampController (#2370)

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added support for new line in stampController

Co-authored-by: Anthony Stirling <77850077+Frooodle@users.noreply.github.com>
This commit is contained in:
Sai Kumar 2024-12-02 23:18:19 +05:30 committed by GitHub
parent 04ccdf6f76
commit 3c0a8071dc
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GPG Key ID: B5690EEEBB952194
1 changed files with 17 additions and 5 deletions
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22
src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java
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@ -147,7 +147,7 @@ public class StampController {
return WebResponseUtils.pdfDocToWebResponse( return WebResponseUtils.pdfDocToWebResponse(
document, document,
Filenames.toSimpleFileName(pdfFile.getOriginalFilename()) Filenames.toSimpleFileName(pdfFile.getOriginalFilename())
.replaceFirst("[.][^.]+$", "") .replaceFirst("[.][^.]+$", "")
+ "_stamped.pdf"); + "_stamped.pdf");
} }
@ -191,7 +191,7 @@ public class StampController {
String fileExtension = resourceDir.substring(resourceDir.lastIndexOf(".")); String fileExtension = resourceDir.substring(resourceDir.lastIndexOf("."));
File tempFile = Files.createTempFile("NotoSansFont", fileExtension).toFile(); File tempFile = Files.createTempFile("NotoSansFont", fileExtension).toFile();
try (InputStream is = classPathResource.getInputStream(); try (InputStream is = classPathResource.getInputStream();
FileOutputStream os = new FileOutputStream(tempFile)) { FileOutputStream os = new FileOutputStream(tempFile)) {
IOUtils.copy(is, os); IOUtils.copy(is, os);
font = PDType0Font.load(document, tempFile); font = PDType0Font.load(document, tempFile);
} finally { } finally {
@ -229,10 +229,22 @@ public class StampController {
calculatePositionY( calculatePositionY(
pageSize, position, calculateTextCapHeight(font, fontSize), margin); pageSize, position, calculateTextCapHeight(font, fontSize), margin);
} }
// Split the stampText into multiple lines
String[] lines = stampText.split("\\\\n");
// Calculate dynamic line height based on font ascent and descent
float ascent = font.getFontDescriptor().getAscent();
float descent = font.getFontDescriptor().getDescent();
float lineHeight = ((ascent - descent) / 1000) * fontSize;
contentStream.beginText(); contentStream.beginText();
contentStream.setTextMatrix(Matrix.getRotateInstance(Math.toRadians(rotation), x, y)); for (int i = 0; i < lines.length; i++) {
contentStream.showText(stampText); String line = lines[i];
// Set the text matrix for each line with rotation
contentStream.setTextMatrix(
Matrix.getRotateInstance(Math.toRadians(rotation), x, y - (i * lineHeight)));
contentStream.showText(line);
}
contentStream.endText(); contentStream.endText();
} }
@ -327,4 +339,4 @@ public class StampController {
private float calculateTextCapHeight(PDFont font, float fontSize) { private float calculateTextCapHeight(PDFont font, float fontSize) {
return font.getFontDescriptor().getCapHeight() / 1000 * fontSize; return font.getFontDescriptor().getCapHeight() / 1000 * fontSize;
} }
} }