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Increase watermark coverage to fill page (#2049) (#2220)

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* Increase watermark coverage to fill page (#2049)

* Increase watermark coverage to fill page with the new calculation (#2049)
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Renan 2024-11-13 08:12:30 -03:00 committed by GitHub
parent 7f566d5de8
commit 5cf53e39d0
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GPG Key ID: B5690EEEBB952194
1 changed files with 20 additions and 6 deletions
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src/main/java/stirling/software/SPDF/controller/api/security/WatermarkController.java
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@ -187,18 +187,32 @@ public class WatermarkController {
float watermarkHeight = heightSpacer + fontSize * textLines.length;
float pageWidth = page.getMediaBox().getWidth();
float pageHeight = page.getMediaBox().getHeight();
int watermarkRows = (int) (pageHeight / watermarkHeight + 1);
int watermarkCols = (int) (pageWidth / watermarkWidth + 1);
//Calculating the new width and height depending on the angle.
float radians = (float) Math.toRadians(rotation);
float newWatermarkWidth =
(float)
(Math.abs(watermarkWidth * Math.cos(radians))
+ Math.abs(watermarkHeight * Math.sin(radians)));
float newWatermarkHeight =
(float)
(Math.abs(watermarkWidth * Math.sin(radians))
+ Math.abs(watermarkHeight * Math.cos(radians)));
//Calculating the number of rows and columns.
int watermarkRows = (int) (pageHeight / newWatermarkHeight + 1);
int watermarkCols = (int) (pageWidth / newWatermarkWidth + 1);
// Add the text watermark
for (int i = 0; i < watermarkRows; i++) {
for (int j = 0; j < watermarkCols; j++) {
for (int i = 0; i <= watermarkRows; i++) {
for (int j = 0; j <= watermarkCols; j++) {
contentStream.beginText();
contentStream.setTextMatrix(
Matrix.getRotateInstance(
(float) Math.toRadians(rotation),
j * watermarkWidth,
i * watermarkHeight));
j * newWatermarkWidth,
i * newWatermarkHeight));
for (int k = 0; k < textLines.length; ++k) {
contentStream.showText(textLines[k]);