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This commit is contained in:
Anthony Stirling
2023-12-30 19:11:27 +00:00
parent 7b43fca6fc
commit 5f771b7851
155 changed files with 5539 additions and 4767 deletions
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126
src/main/java/stirling/software/SPDF/controller/api/ScalePagesController.java
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@@ -23,88 +23,90 @@ import org.springframework.web.multipart.MultipartFile;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import stirling.software.SPDF.model.api.general.ScalePagesRequest;
import stirling.software.SPDF.utils.WebResponseUtils;
@RestController
@RequestMapping("/api/v1/general")
@Tag(name = "General", description = "General APIs")
public class ScalePagesController {
private static final Logger logger = LoggerFactory.getLogger(ScalePagesController.class);
private static final Logger logger = LoggerFactory.getLogger(ScalePagesController.class);
@PostMapping(value = "/scale-pages", consumes = "multipart/form-data")
@Operation(summary = "Change the size of a PDF page/document", description = "This operation takes an input PDF file and the size to scale the pages to in the output PDF file. Input:PDF Output:PDF Type:SISO")
public ResponseEntity<byte[]> scalePages(@ModelAttribute ScalePagesRequest request) throws IOException {
MultipartFile file = request.getFileInput();
String targetPDRectangle = request.getPageSize();
float scaleFactor = request.getScaleFactor();
@PostMapping(value = "/scale-pages", consumes = "multipart/form-data")
@Operation(
summary = "Change the size of a PDF page/document",
description =
"This operation takes an input PDF file and the size to scale the pages to in the output PDF file. Input:PDF Output:PDF Type:SISO")
public ResponseEntity<byte[]> scalePages(@ModelAttribute ScalePagesRequest request)
throws IOException {
MultipartFile file = request.getFileInput();
String targetPDRectangle = request.getPageSize();
float scaleFactor = request.getScaleFactor();
Map<String, PDRectangle> sizeMap = new HashMap<>();
// Add A0 - A10
sizeMap.put("A0", PDRectangle.A0);
sizeMap.put("A1", PDRectangle.A1);
sizeMap.put("A2", PDRectangle.A2);
sizeMap.put("A3", PDRectangle.A3);
sizeMap.put("A4", PDRectangle.A4);
sizeMap.put("A5", PDRectangle.A5);
sizeMap.put("A6", PDRectangle.A6);
Map<String, PDRectangle> sizeMap = new HashMap<>();
// Add A0 - A10
sizeMap.put("A0", PDRectangle.A0);
sizeMap.put("A1", PDRectangle.A1);
sizeMap.put("A2", PDRectangle.A2);
sizeMap.put("A3", PDRectangle.A3);
sizeMap.put("A4", PDRectangle.A4);
sizeMap.put("A5", PDRectangle.A5);
sizeMap.put("A6", PDRectangle.A6);
// Add other sizes
sizeMap.put("LETTER", PDRectangle.LETTER);
sizeMap.put("LEGAL", PDRectangle.LEGAL);
// Add other sizes
sizeMap.put("LETTER", PDRectangle.LETTER);
sizeMap.put("LEGAL", PDRectangle.LEGAL);
if (!sizeMap.containsKey(targetPDRectangle)) {
throw new IllegalArgumentException(
"Invalid PDRectangle. It must be one of the following: A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10");
}
if (!sizeMap.containsKey(targetPDRectangle)) {
throw new IllegalArgumentException(
"Invalid PDRectangle. It must be one of the following: A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10");
}
PDRectangle targetSize = sizeMap.get(targetPDRectangle);
PDRectangle targetSize = sizeMap.get(targetPDRectangle);
PDDocument sourceDocument = PDDocument.load(file.getBytes());
PDDocument outputDocument = new PDDocument();
PDDocument sourceDocument = PDDocument.load(file.getBytes());
PDDocument outputDocument = new PDDocument();
int totalPages = sourceDocument.getNumberOfPages();
for (int i = 0; i < totalPages; i++) {
PDPage sourcePage = sourceDocument.getPage(i);
PDRectangle sourceSize = sourcePage.getMediaBox();
float scaleWidth = targetSize.getWidth() / sourceSize.getWidth();
float scaleHeight = targetSize.getHeight() / sourceSize.getHeight();
float scale = Math.min(scaleWidth, scaleHeight) * scaleFactor;
PDPage newPage = new PDPage(targetSize);
outputDocument.addPage(newPage);
PDPageContentStream contentStream = new PDPageContentStream(outputDocument, newPage, PDPageContentStream.AppendMode.APPEND, true);
float x = (targetSize.getWidth() - sourceSize.getWidth() * scale) / 2;
float y = (targetSize.getHeight() - sourceSize.getHeight() * scale) / 2;
contentStream.saveGraphicsState();
contentStream.transform(Matrix.getTranslateInstance(x, y));
contentStream.transform(Matrix.getScaleInstance(scale, scale));
LayerUtility layerUtility = new LayerUtility(outputDocument);
PDFormXObject form = layerUtility.importPageAsForm(sourceDocument, i);
contentStream.drawForm(form);
int totalPages = sourceDocument.getNumberOfPages();
for (int i = 0; i < totalPages; i++) {
PDPage sourcePage = sourceDocument.getPage(i);
PDRectangle sourceSize = sourcePage.getMediaBox();
contentStream.restoreGraphicsState();
contentStream.close();
}
float scaleWidth = targetSize.getWidth() / sourceSize.getWidth();
float scaleHeight = targetSize.getHeight() / sourceSize.getHeight();
float scale = Math.min(scaleWidth, scaleHeight) * scaleFactor;
PDPage newPage = new PDPage(targetSize);
outputDocument.addPage(newPage);
PDPageContentStream contentStream =
new PDPageContentStream(
outputDocument, newPage, PDPageContentStream.AppendMode.APPEND, true);
float x = (targetSize.getWidth() - sourceSize.getWidth() * scale) / 2;
float y = (targetSize.getHeight() - sourceSize.getHeight() * scale) / 2;
contentStream.saveGraphicsState();
contentStream.transform(Matrix.getTranslateInstance(x, y));
contentStream.transform(Matrix.getScaleInstance(scale, scale));
ByteArrayOutputStream baos = new ByteArrayOutputStream();
outputDocument.save(baos);
outputDocument.close();
sourceDocument.close();
return WebResponseUtils.bytesToWebResponse(baos.toByteArray(),
file.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_scaled.pdf");
}
LayerUtility layerUtility = new LayerUtility(outputDocument);
PDFormXObject form = layerUtility.importPageAsForm(sourceDocument, i);
contentStream.drawForm(form);
contentStream.restoreGraphicsState();
contentStream.close();
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
outputDocument.save(baos);
outputDocument.close();
sourceDocument.close();
return WebResponseUtils.bytesToWebResponse(
baos.toByteArray(),
file.getOriginalFilename().replaceFirst("[.][^.]+$", "") + "_scaled.pdf");
}
}