Watermark opacity (#76)

Bumps [org.springframework.boot](https://github.com/spring-projects/spring-boot) from 3.0.3 to 3.0.4.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/compare/v3.0.3...v3.0.4)

---
updated-dependencies:
- dependency-name: org.springframework.boot
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

README.md

@@ -25,17 +25,23 @@ I will support and fix/add things to this if there is a demand [Discord](https:/
 - Reorganize PDF pages into different orders.
 - Add images to PDFs at specified locations. (WIP)
 - Rotating PDFs in 90 degree increments.
-- Compressing PDFs to decrease their filesize.
+- Compressing PDFs to decrease their filesize. (Using OCRMyPDF)
 - Add and remove passwords
 - Set PDF Permissions
 - Add watermark(s)
+- Convert Any common file to PDF (using LibreOffice)
+- Extract images from PDF
+- OCR on PDF (Using OCRMyPDF)
 - Edit metadata
 - Dark mode support.
+- Custom download options
+- Parallel file processing and downloads
 
 ## Technologies used
 - Spring Boot + Thymeleaf
 - PDFBox
-- e-iceblue spire.pdf.free (for PDF compression untill i find a nicer way)
+- LibreOffice for advanced conversions
+- OcrMyPdf https://github.com/ocrmypdf/OCRmyPDF
 - HTML, CSS, JavaScript
 - Docker
 

build.gradle

@@ -1,11 +1,11 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '3.0.3'
+	id 'org.springframework.boot' version '3.0.4'
 	id 'io.spring.dependency-management' version '1.1.0'
 }
 
 group = 'stirling.software'
-version = '0.4.0'
+version = '0.4.2'
 sourceCompatibility = '17'
 
 repositories {

src/main/java/stirling/software/SPDF/controller/CompressController.java

@@ -80,6 +80,8 @@ public class CompressController {
         // Prepare the OCRmyPDF command
         List<String> command = new ArrayList<>();
         command.add("ocrmypdf");
+        command.add("--skip-text");
+        command.add("--tesseract-timeout=0");
         command.add("--optimize");
         command.add(String.valueOf(optimizeLevel));
 

src/main/java/stirling/software/SPDF/controller/security/WatermarkController.java

@@ -26,6 +26,7 @@ import org.springframework.web.multipart.MultipartFile;
 
 import stirling.software.SPDF.utils.PdfUtils;
 import stirling.software.SPDF.utils.WatermarkRemover;
+import org.apache.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState;
 
 @Controller
 public class WatermarkController {
@@ -45,7 +46,8 @@ public class WatermarkController {
     @PostMapping("/add-watermark")
     public ResponseEntity<byte[]> addWatermark(@RequestParam("fileInput") MultipartFile pdfFile, @RequestParam("watermarkText") String watermarkText,
             @RequestParam(defaultValue = "30", name = "fontSize") float fontSize, @RequestParam(defaultValue = "0", name = "rotation") float rotation,
-            @RequestParam(defaultValue = "50", name = "widthSpacer") int widthSpacer, @RequestParam(defaultValue = "50", name = "heightSpacer") int heightSpacer)
+            @RequestParam(defaultValue = "0.5", name = "opacity") float opacity,
+    	@RequestParam(defaultValue = "50", name = "widthSpacer") int widthSpacer, @RequestParam(defaultValue = "50", name = "heightSpacer") int heightSpacer)
             throws IOException {
 
         // Load the input PDF
@@ -53,9 +55,18 @@ public class WatermarkController {
 
         // Create a page in the document
         for (PDPage page : document.getPages()) {
+        	
+        	
+
+            
             // Get the page's content stream
             PDPageContentStream contentStream = new PDPageContentStream(document, page, PDPageContentStream.AppendMode.APPEND, true);
 
+            // Set transparency
+            PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();
+            graphicsState.setNonStrokingAlphaConstant(opacity);
+            contentStream.setGraphicsStateParameters(graphicsState);
+            
             // Set font of watermark
             PDFont font = PDType1Font.HELVETICA_BOLD;
             contentStream.beginText();

src/main/resources/messages_ar_AR.properties

@@ -127,8 +127,15 @@ addImage.submit=إضافة صورة
 
 #compress
 compress.title=ضغط
-compress.header=ضغط ملف PDF
-compress.compressLevel=القيمة بين 1 و 100 (يتم تقليل 1 إلى أقصى حد)
+compress.header=\u0636\u063A\u0637 PDF
+compress.credit=\u062A\u0633\u062A\u062E\u062F\u0645 \u0647\u0630\u0647 \u0627\u0644\u062E\u062F\u0645\u0629 OCRmyPDF \u0644\u0636\u063A\u0637 / \u062A\u062D\u0633\u064A\u0646 PDF.
+compress.selectText.1 = \u0645\u0633\u062A\u0648\u0649 \u0627\u0644\u062A\u062D\u0633\u064A\u0646:
+compress.selectText.2=0 (\u0628\u062F\u0648\u0646 \u062A\u062D\u0633\u064A\u0646)
+compress.selectText.3=1 (\u0627\u0641\u062A\u0631\u0627\u0636\u064A\u060C \u062A\u062D\u0633\u064A\u0646 \u0628\u062F\u0648\u0646 \u0641\u0642\u062F\u0627\u0646)
+compress.selectText.4=2 (\u062A\u062D\u0633\u064A\u0646 \u0636\u064A\u0627\u0639)
+compress.selectText.5=3 (\u062A\u062D\u0633\u064A\u0646 \u0636\u064A\u0627\u0639 \u060C \u0623\u0643\u062B\u0631 \u0639\u062F\u0648\u0627\u0646\u064A\u0629)
+compress.selectText.6=\u062A\u0645\u0643\u064A\u0646 \u0639\u0631\u0636 \u0627\u0644\u0648\u064A\u0628 \u0627\u0644\u0633\u0631\u064A\u0639 (\u062E\u0637\u064A PDF)
+compress.selectText.7=\u062A\u0645\u0643\u064A\u0646 \u062A\u0631\u0645\u064A\u0632 JBIG2 \u0627\u0644\u0645\u0641\u0642\u0648\u062F
 compress.submit=ضغط
 
 
@@ -218,6 +225,7 @@ watermark.selectText.3=حجم الخط:
 watermark.selectText.4=دوران (0-360):
 watermark.selectText.5=widthSpacer (مسافة بين كل علامة مائية أفقيًا):
 watermark.selectText.6=heightSpacer (مسافة بين كل علامة مائية عموديًا):
+watermark.selectText.7=\u0627\u0644\u062A\u0639\u062A\u064A\u0645 (0\u066A - 100\u066A):
 watermark.submit=إضافة علامة مائية
 
 #remove-watermark

src/main/resources/messages_de_DE.properties

@@ -127,7 +127,14 @@ addImage.submit=Bild hinzufügen
 #compress
 compress.title=Komprimieren
 compress.header=PDF komprimieren
-compress.compressLevel=Wert zwischen 1 und 100 (1 ist am meisten komprimiert)
+compress.credit=Dieser Dienst verwendet OCRmyPDF für die PDF-Komprimierung/-Optimierung.
+compress.selectText.1=Optimierungsstufe:
+compress.selectText.2=0 (Keine Optimierung)
+compress.selectText.3=1 (Standard, verlustfreie Optimierung)
+compress.selectText.4=2 (Verlustbehaftete Optimierung)
+compress.selectText.5=3 (Verlustbehaftete Optimierung, aggressiver)
+compress.selectText.6=Schnelle Webansicht aktivieren (PDF linearisieren)
+compress.selectText.7=Verlustbehaftete JBIG2-Kodierung aktivieren
 compress.submit=Komprimieren
 
 
@@ -217,6 +224,7 @@ watermark.selectText.3=Schriftgröße:
 watermark.selectText.4=Drehung (0-360):
 watermark.selectText.5=breiteSpacer (horizontaler Abstand zwischen den einzelnen Wasserzeichen):
 watermark.selectText.6=höheSpacer (vertikaler Abstand zwischen den einzelnen Wasserzeichen):
+watermark.selectText.7=Deckkraft (0% - 100 %):
 watermark.submit=Wasserzeichen hinzufügen
 
 #remove-watermark

src/main/resources/messages_en_GB.properties

@@ -222,6 +222,7 @@ watermark.selectText.3=Font Size:
 watermark.selectText.4=Rotation (0-360):
 watermark.selectText.5=widthSpacer (Space between each watermark horizontally):
 watermark.selectText.6=heightSpacer (Space between each watermark vertically):
+watermark.selectText.7=Opacity (0% - 100%):
 watermark.submit=Add Watermark
 
 #remove-watermark

src/main/resources/messages_en_US.properties

@@ -124,7 +124,14 @@ addImage.submit=Add image
 #compress
 compress.title=Compress
 compress.header=Compress PDF
-compress.compressLevel=Value between 1 and 100 (1 being most reduced)
+compress.credit=This service uses OCRmyPDF for PDF Compress/Optimisation.
+compress.selectText.1=Optimization level:
+compress.selectText.2=0 (No optimization)
+compress.selectText.3=1 (Default, lossless optimization)
+compress.selectText.4=2 (Lossy optimization)
+compress.selectText.5=3 (Lossy optimization, more aggressive)
+compress.selectText.6=Enable fast web view (linearize PDF)
+compress.selectText.7=Enable lossy JBIG2 encoding
 compress.submit=Compress
 
 
@@ -215,6 +222,7 @@ watermark.selectText.3=Font Size:
 watermark.selectText.4=Rotation (0-360):
 watermark.selectText.5=widthSpacer (Space between each watermark horizontally):
 watermark.selectText.6=heightSpacer (Space between each watermark vertically):
+watermark.selectText.7=Opacity (0% - 100%):
 watermark.submit=Add Watermark
 
 #remove-watermark

src/main/resources/messages_fr_FR.properties

@@ -133,7 +133,14 @@ addImage.submit=Ajouter une image
 #compress
 compress.title=Compresser
 compress.header=Compresser le PDF
-compress.compressLevel=Valeur entre 1 et 100 (1 étant le plus réduit)
+compress.credit=Ce service utilise OCRmyPDF pour la compression/optimisation PDF.
+compress.selectText.1=Niveau d\u2019optimisation :
+compress.selectText.2=0 (pas d\u2019optimisation)
+compress.selectText.3=1 (par défaut, optimisation sans perte)
+compress.selectText.4=2 (optimisation avec perte)
+compress.selectText.5=3 (optimisation avec perte, plus agressive)
+compress.selectText.6=Activer l\u2019affichage Web rapide (linéariser PDF)
+compress.selectText.7=Activer l\u2019encodage JBIG2 avec perte
 compress.submit=Compresser
 
 
@@ -223,6 +230,7 @@ watermark.selectText.3=Taille de la police
 watermark.selectText.4=Rotation (0-360)Â:
 watermark.selectText.5=widthSpacer (Espace entre chaque filigrane horizontalement)Â:
 watermark.selectText.6=heightSpacer (Espace entre chaque filigrane verticalement)Â:
+watermark.selectText.7=Opacité (0 % - 100 %):
 watermark.submit=Ajouter un filigrane
 
 #remove-watermark

src/main/resources/templates/compress-pdf.html

@@ -33,7 +33,7 @@
 					            <input type="checkbox" name="jbig2Lossy" id="jbig2Lossy">
 					            <label for="jbig2Lossy" th:text="#{compress.selectText.7}"></label>
 					        </div>
-					        <button type="submit" th:text="#{compress.submit}"></button>
+					        <button type="submit" class="btn btn-primary" th:text="#{compress.submit}"></button>
 					    </form>
              			<p class="mt-3" th:text="#{compress.credit}"></p>
 

src/main/resources/templates/security/add-watermark.html

@@ -26,6 +26,45 @@
                                 <label for="fontSize" th:text="#{watermark.selectText.3}"></label> 
                                 <input type="text" id="fontSize" name="fontSize" class="form-control" value="30" />
                             </div>
+                            <div class="form-group">
+							    <label for="opacity" th:text="#{watermark.selectText.7}"></label> 
+							    <input type="text" id="opacity" name="opacityText" class="form-control" value="50" onblur="updateopacityValue()" />
+							    <input type="hidden" id="opacityReal" name="opacity" value="0.5">
+							</div>
+
+    
+    						<script>
+							    const opacityInput = document.getElementById('opacity');
+							    const opacityRealInput = document.getElementById('opacityReal');
+							
+							    const updateopacityValue = () => {
+							        let percentageValue = parseFloat(opacityInput.value.replace('%', ''));
+							        if (isNaN(percentageValue)) {
+							            percentageValue = 0;
+							        }
+							        percentageValue = Math.min(Math.max(percentageValue, 0), 100);
+							        opacityInput.value = `${percentageValue}`;
+							        opacityRealInput.value = (percentageValue / 100).toFixed(2);
+							    };
+							
+							    const appendPercentageSymbol = () => {
+							        if (!opacityInput.value.endsWith('%')) {
+							            opacityInput.value += '%';
+							        }
+							    };
+							
+							    opacityInput.addEventListener('focus', () => {
+							        opacityInput.value = opacityInput.value.replace('%', '');
+							    });
+							    opacityInput.addEventListener('blur', () => {
+							        updateopacityValue();
+							        appendPercentageSymbol();
+							    });
+							
+							    // Set initial values
+							    updateopacityValue();
+							    appendPercentageSymbol();
+							</script>
                             <div class="form-group">
                                 <label for="rotation" th:text="#{watermark.selectText.4}"></label> 
                                 <input type="text" id="rotation" name="rotation" class="form-control" value="45" />