Split by sections #506
This commit is contained in:
Anthony Stirling
parent
12dccab460
commit
c28a40ffe8
8 changed files with 233 additions and 4 deletions
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package stirling.software.SPDF.controller.api;
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import java.awt.geom.Rectangle2D;
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import java.awt.image.BufferedImage;
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import org.apache.pdfbox.pdmodel.graphics.form.PDFormXObject;
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import org.apache.pdfbox.pdmodel.graphics.image.LosslessFactory;
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import org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject;
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import java.awt.image.DataBufferByte;
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import java.awt.image.DataBufferInt;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipOutputStream;
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import org.apache.pdfbox.multipdf.LayerUtility;
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import org.apache.pdfbox.pdmodel.PDDocument;
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import org.apache.pdfbox.pdmodel.PDPage;
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import org.apache.pdfbox.pdmodel.common.PDRectangle;
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import org.apache.pdfbox.rendering.PDFRenderer;
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import org.apache.pdfbox.util.Matrix;
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import org.springframework.http.MediaType;
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import org.springframework.http.ResponseEntity;
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import org.springframework.web.bind.annotation.ModelAttribute;
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import org.springframework.web.bind.annotation.PostMapping;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import org.springframework.web.multipart.MultipartFile;
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import com.google.zxing.BinaryBitmap;
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import com.google.zxing.LuminanceSource;
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import com.google.zxing.MultiFormatReader;
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import com.google.zxing.NotFoundException;
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import com.google.zxing.PlanarYUVLuminanceSource;
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import com.google.zxing.Result;
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import com.google.zxing.common.HybridBinarizer;
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import io.swagger.v3.oas.annotations.Operation;
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import io.swagger.v3.oas.annotations.tags.Tag;
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import stirling.software.SPDF.model.api.SplitPdfBySectionsRequest;
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import stirling.software.SPDF.model.api.general.SplitPdfBySizeOrCountRequest;
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import stirling.software.SPDF.model.api.misc.AutoSplitPdfRequest;
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import stirling.software.SPDF.utils.GeneralUtils;
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import stirling.software.SPDF.utils.WebResponseUtils;
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import org.apache.pdfbox.pdmodel.PDPageContentStream;
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@RestController
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@RequestMapping("/api/v1/general")
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@Tag(name = "Misc", description = "Miscellaneous APIs")
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public class SplitPdfBySectionsController {
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@PostMapping(value = "/split-pdf-by-sections", consumes = "multipart/form-data")
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@Operation(summary = "Split PDF pages into smaller sections", description = "Split each page of a PDF into smaller sections based on the user's choice (halves, thirds, quarters, etc.), both vertically and horizontally. Input: PDF, Split Parameters. Output: ZIP containing split documents.")
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public ResponseEntity<byte[]> splitPdf(@ModelAttribute SplitPdfBySectionsRequest request) throws Exception {
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List<ByteArrayOutputStream> splitDocumentsBoas = new ArrayList<>();
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MultipartFile file = request.getFileInput();
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PDDocument sourceDocument = PDDocument.load(file.getInputStream());
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// Process the PDF based on split parameters
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int horiz = request.getHorizontalDivisions();
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int verti = request.getVerticalDivisions();
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List<PDDocument> splitDocuments = splitPdfPages(sourceDocument, horiz, verti);
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for (PDDocument doc : splitDocuments) {
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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doc.save(baos);
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doc.close();
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splitDocumentsBoas.add(baos);
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}
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sourceDocument.close();
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Path zipFile = Files.createTempFile("split_documents", ".zip");
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String filename = file.getOriginalFilename().replaceFirst("[.][^.]+$", "");
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byte[] data;
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try (ZipOutputStream zipOut = new ZipOutputStream(Files.newOutputStream(zipFile))) {
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int pageNum = 1;
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for (int i = 0; i < splitDocumentsBoas.size(); i++) {
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ByteArrayOutputStream baos = splitDocumentsBoas.get(i);
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int sectionNum = (i % (horiz * verti)) + 1;
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String fileName = filename + "_" + pageNum + "_" + sectionNum + ".pdf";
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byte[] pdf = baos.toByteArray();
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ZipEntry pdfEntry = new ZipEntry(fileName);
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zipOut.putNextEntry(pdfEntry);
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zipOut.write(pdf);
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zipOut.closeEntry();
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if (sectionNum == horiz * verti) pageNum++;
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}
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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data = Files.readAllBytes(zipFile);
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Files.delete(zipFile);
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}
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return WebResponseUtils.bytesToWebResponse(data, filename + "_split.zip", MediaType.APPLICATION_OCTET_STREAM);
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}
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public List<PDDocument> splitPdfPages(PDDocument document, int horizontalDivisions, int verticalDivisions) throws IOException {
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List<PDDocument> splitDocuments = new ArrayList<>();
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for (PDPage originalPage : document.getPages()) {
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PDRectangle originalMediaBox = originalPage.getMediaBox();
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float width = originalMediaBox.getWidth();
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float height = originalMediaBox.getHeight();
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float subPageWidth = width / horizontalDivisions;
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float subPageHeight = height / verticalDivisions;
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LayerUtility layerUtility = new LayerUtility(document);
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for (int i = 0; i < horizontalDivisions; i++) {
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for (int j = 0; j < verticalDivisions; j++) {
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PDDocument subDoc = new PDDocument();
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PDPage subPage = new PDPage(new PDRectangle(subPageWidth, subPageHeight));
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subDoc.addPage(subPage);
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PDFormXObject form = layerUtility.importPageAsForm(document, document.getPages().indexOf(originalPage));
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try (PDPageContentStream contentStream = new PDPageContentStream(subDoc, subPage)) {
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// Set clipping area and position
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float translateX = -subPageWidth * i;
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float translateY = height - subPageHeight * (j + 1) - subPageHeight;
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contentStream.saveGraphicsState();
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contentStream.addRect(0, 0, subPageWidth, subPageHeight);
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contentStream.clip();
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contentStream.transform(new Matrix(1, 0, 0, 1, translateX, translateY));
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// Draw the form
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contentStream.drawForm(form);
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contentStream.restoreGraphicsState();
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}
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splitDocuments.add(subDoc);
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}
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}
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}
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return splitDocuments;
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}
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}
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@ -74,6 +74,13 @@ public class GeneralWebController {
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model.addAttribute("currentPage", "merge-pdfs");
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return "merge-pdfs";
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}
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@GetMapping("/split-pdf-by-sections")
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@Hidden
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public String splitPdfBySections(Model model) {
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model.addAttribute("currentPage", "split-pdf-by-sections");
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return "split-pdf-by-sections";
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}
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@GetMapping("/view-pdf")
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@Hidden
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@ -0,0 +1,18 @@
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package stirling.software.SPDF.model.api;
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import org.springframework.web.multipart.MultipartFile;
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import io.swagger.v3.oas.annotations.media.Schema;
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import lombok.Data;
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import lombok.EqualsAndHashCode;
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import lombok.NoArgsConstructor;
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@Data
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@NoArgsConstructor
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@EqualsAndHashCode(callSuper=true)
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public class SplitPdfBySectionsRequest extends PDFFile {
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@Schema(description = "Number of horizontal divisions for each PDF page", example = "2")
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private int horizontalDivisions;
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@Schema(description = "Number of vertical divisions for each PDF page", example = "2")
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private int verticalDivisions;
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}
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@ -37,7 +37,7 @@
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<!-- Root Logger -->
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<root level="${LOG_TYPE}">
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<root level="INFO">
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<appender-ref ref="CONSOLE"/>
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<appender-ref ref="GENERAL"/>
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</root>
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@ -350,6 +350,10 @@ home.overlay-pdfs.title=Overlay PDFs
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home.overlay-pdfs.desc=Overlays PDFs on-top of another PDF
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overlay-pdfs.tags=Overlay
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home.split-by-sections.title=Split PDF by Sections
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home.split-by-sections.desc=Divide each page of a PDF into smaller horizontal and vertical sections
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split-by-sections.tags=Section Split, Divide, Customize
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###########################
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# #
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# WEB PAGES #
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@ -870,3 +874,12 @@ overlay-pdfs.position.foreground=Foreground
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overlay-pdfs.position.background=Background
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overlay-pdfs.submit=Submit
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#split-by-sections
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split-by-sections.title=Split PDF by Sections
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split-by-sections.header=Split PDF into Sections
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split-by-sections.horizontal.label=Horizontal Divisions
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split-by-sections.vertical.label=Vertical Divisions
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split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
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split-by-sections.vertical.placeholder=Enter number of vertical divisions
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split-by-sections.submit=Split PDF
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@ -61,8 +61,7 @@
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<div th:replace="~{fragments/navbarEntry :: navbarEntry ('pdf-to-single-page', 'images/single-page.svg', 'home.PdfToSinglePage.title', 'home.PdfToSinglePage.desc', 'PdfToSinglePage.tags')}"></div>
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<div th:replace="~{fragments/navbarEntry :: navbarEntry ( 'split-by-size-or-count', 'images/layout-split.svg', 'home.autoSizeSplitPDF.title', 'home.autoSizeSplitPDF.desc', 'autoSizeSplitPDF.tags')}"></div>
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<div th:replace="~{fragments/navbarEntry :: navbarEntry ( 'overlay-pdf', 'images/overlay.svg', 'home.overlay-pdfs.title', 'home.overlay-pdfs.desc', 'overlay-pdfs.tags')}"></div>
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<div th:replace="~{fragments/navbarEntry :: navbarEntry ( 'split-pdf-by-sections', 'images/layout-split.svg', 'home.split-by-sections.title', 'home.split-by-sections.desc', 'split-by-sections.tags')}"></div>
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</div>
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</li>
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<li class="nav-item nav-item-separator"></li>
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@ -96,8 +96,9 @@
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<div th:replace="~{fragments/card :: card(id='pdf-to-csv', cardTitle=#{home.tableExtraxt.title}, cardText=#{home.tableExtraxt.desc}, cardLink='pdf-to-csv', svgPath='images/pdf-csv.svg')}"></div>
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<div th:replace="~{fragments/card :: card(id='split-by-size-or-count', cardTitle=#{home.autoSizeSplitPDF.title}, cardText=#{home.autoSizeSplitPDF.desc}, cardLink='split-by-size-or-count', svgPath='images/layout-split.svg')}"></div>
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<div th:replace="~{fragments/card :: card(id='overlay-pdf', cardTitle=#{home.overlay-pdfs.title}, cardText=#{home.overlay-pdfs.desc}, cardLink='overlay-pdf', svgPath='images/overlay.svg')}"></div>
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<div th:replace="~{fragments/card :: card(id='split-pdf-by-sections', cardTitle=#{home.split-by-sections.title}, cardText=#{home.split-by-sections.desc}, cardLink='split-pdf-by-sections', svgPath='images/layout-split.svg')}"></div>
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</div>
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</div> </div>
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38
src/main/resources/templates/split-pdf-by-sections.html
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38
src/main/resources/templates/split-pdf-by-sections.html
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<!DOCTYPE html>
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<html th:lang="${#locale.toString()}" th:lang-direction="#{language.direction}" xmlns:th="http://www.thymeleaf.org">
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<th:block th:insert="~{fragments/common :: head(title=#{split-by-sections.title})}"></th:block>
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<body>
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<th:block th:insert="~{fragments/common :: game}"></th:block>
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<div id="page-container">
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<div id="content-wrap">
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<div th:insert="~{fragments/navbar.html :: navbar}"></div>
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<br> <br>
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<div class="container">
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<div class="row justify-content-center">
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<div class="col-md-6">
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<h2 th:text="#{split-by-sections.header}"></h2>
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<form method="post" enctype="multipart/form-data" th:action="@{/api/v1/general/split-pdf-by-sections}">
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<div th:replace="~{fragments/common :: fileSelector(name='fileInput', multiple=false, accept='application/pdf')}"></div>
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<label for="horizontalDivisions" th:text="#{split-by-sections.horizontal.label}">Horizontal Divisions</label>
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<input type="number" id="horizontalDivisions" name="horizontalDivisions" class="form-control" min="1" required th:placeholder="#{split-by-sections.horizontal.placeholder}">
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<br>
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<label for="verticalDivisions" th:text="#{split-by-sections.vertical.label}">Vertical Divisions</label>
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<input type="number" id="verticalDivisions" name="verticalDivisions" class="form-control" min="1" required th:placeholder="#{split-by-sections.vertical.placeholder}">
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<br>
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<button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{split-by-sections.submit}">Submit</button>
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</form>
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</div>
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</div>
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</div>
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</div>
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<div th:insert="~{fragments/footer.html :: footer}"></div>
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</div>
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</body>
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</html>
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