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-rw-r--r--pdf-as-pdfbox-2/src/main/java/at/knowcenter/wag/egov/egiz/pdfbox2/pdf/PDFUtilities.java181
1 files changed, 133 insertions, 48 deletions
diff --git a/pdf-as-pdfbox-2/src/main/java/at/knowcenter/wag/egov/egiz/pdfbox2/pdf/PDFUtilities.java b/pdf-as-pdfbox-2/src/main/java/at/knowcenter/wag/egov/egiz/pdfbox2/pdf/PDFUtilities.java
index c1578120..79e75b99 100644
--- a/pdf-as-pdfbox-2/src/main/java/at/knowcenter/wag/egov/egiz/pdfbox2/pdf/PDFUtilities.java
+++ b/pdf-as-pdfbox-2/src/main/java/at/knowcenter/wag/egov/egiz/pdfbox2/pdf/PDFUtilities.java
@@ -48,65 +48,150 @@
*/
package at.knowcenter.wag.egov.egiz.pdfbox2.pdf;
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
import java.io.IOException;
-import java.util.Iterator;
-import java.util.List;
+import java.util.HashMap;
-import org.apache.pdfbox.cos.COSStream;
import org.apache.pdfbox.pdmodel.PDDocument;
-import org.apache.pdfbox.pdmodel.PDPage;
-import org.apache.pdfbox.pdmodel.PDPageTree;
-import org.apache.pdfbox.pdmodel.PDResources;
-import org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotation;
+import org.apache.pdfbox.pdmodel.common.PDRectangle;
+import org.apache.pdfbox.rendering.PDFRenderer;
+import org.apache.pdfbox.tools.imageio.ImageIOUtil;
-import at.gv.egiz.pdfas.common.exceptions.PDFIOException;
+import at.gv.egiz.pdfas.lib.impl.pdfbox2.positioning.PositioningRenderer;
+import at.gv.egiz.pdfas.lib.impl.stamping.IPDFVisualObject;
-/**
- * Contains useful helpers for accessing PDF documents.
- *
- * @author wprinz
- * @author mruhmer
- */
public abstract class PDFUtilities {
- public static float calculatePageLength(PDDocument document, int page,
- float effectivePageHeight, /* int pagerotation, */boolean legacy32, boolean legacy40)
- throws PDFIOException {
- // int last_page_id = document.getNumberOfPages();
- PDPageTree allPages = document.getDocumentCatalog().getPages();
- PDPage pdpage = allPages.get(page);
- // pdpage.setRotation(pagerotation);
- return calculatePageLength(pdpage, effectivePageHeight, legacy32, legacy40);
- }
- public static float calculatePageLength(PDPage page,
- float effectivePageHeight, boolean legacy32, boolean legacy40) throws PDFIOException {
- try {
- PDFPage my_page = new PDFPage(effectivePageHeight, legacy32, legacy40);
- //PDResources resources = page.getResources();
- if (page.getContents() != null) {
- //COSStream stream = page.getContents();
- // List<PDThreadBead> articles = page.getThreadBeads();
- // my_page.processMyPage(page);
- //my_page.processStream(page, resources, stream); //TODO: pdfbox2 -> right?
- my_page.processPage(page);
- }
- if (!legacy32) {
- if (page.getAnnotations() != null) {
- Iterator<PDAnnotation> annotationsIt = page
- .getAnnotations().iterator();
+ public static Color MAGIC_COLOR = new Color(152,254,52);// green-ish background
+
+ public static float getMaxYPosition(
+ PDDocument pdfDataSource, int page, IPDFVisualObject pdfTable, float signatureMarginVertical, float footer_line) throws IOException {
+ long t0 = System.currentTimeMillis();
+ PositioningRenderer renderer = new PositioningRenderer(pdfDataSource);
+ //BufferedImage bim = renderer.renderImage(page);
+ long t1 = System.currentTimeMillis();
+ int width = (int) pdfDataSource.getPage(page).getCropBox().getWidth();
+ int height = (int) pdfDataSource.getPage(page).getCropBox().getHeight();
+ BufferedImage bim = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+ long t2 = System.currentTimeMillis();
+ Graphics2D graphics = bim.createGraphics();
+ long t3 = System.currentTimeMillis();
+// graphics.setPaint(MAGIC_COLOR);
+// graphics.fillRect(0, 0, width, height);
+ graphics.setBackground(MAGIC_COLOR);
+
+ renderer.renderPageToGraphics(page, graphics);
+ long t4 = System.currentTimeMillis();
+ Color bgColor = MAGIC_COLOR;
+
+ if(true){ //only used if background color should be determined automatically
+ bgColor = determineBackgroundColor(bim);
+ }
+ long t5 = System.currentTimeMillis();
+ int yCoord = bim.getHeight() - 1 - (int)footer_line;
- while (annotationsIt.hasNext()) {
- PDAnnotation annotation = annotationsIt.next();
- if (!annotation.isInvisible()) {
- my_page.processAnnotation(annotation);
- }
- }
+ for(int row = yCoord; row >= 0; row--){
+ for(int col = 0; col < bim.getWidth(); col++){
+ int val = bim.getRGB(col, row);
+ if(val != bgColor.getRGB()){
+ yCoord = row;
+ row=-1;
+ break;
}
}
- return my_page.getMaxPageLength();
- } catch (IOException e) {
- throw new PDFIOException("error.pdf.stamp.11", e);
}
+ long t6 = System.currentTimeMillis();
+
+ System.out.println("new Renderer: "+ (t1-t0));
+ System.out.println("new BI: "+ (t2-t1));
+ System.out.println("Create Graphics: "+ (t3-t2));
+ System.out.println("Render to Graphics: "+ (t4-t3));
+ System.out.println("Determined bg color: "+ (t5-t4));
+ System.out.println("Calc y: "+ (t6-t5));
+
+// for(int i=0; i < bim.getWidth(); i++){
+// bim.setRGB(i, yCoord, 255);
+// }
+//
+ ImageIOUtil.writeImage(bim, "/home/cmaierhofer/temp/bufferer.png", 72);
+
+ return yCoord;
}
+
+// public static float getFreeTablePosition(
+// PDDocument pdfDataSource, int page, IPDFVisualObject pdfTable, float signatureMarginVertical) throws IOException {
+//
+// float table_height = pdfTable.getHeight();
+//
+// PDFRenderer renderer = new PDFRenderer(pdfDataSource);
+//
+// BufferedImage bim = renderer.renderImage(page);
+//
+// Color bgColor = determineBackgroundColor(bim);
+// float posY = bim.getHeight();
+//
+// for(int row=0; row<bim.getHeight();row++){
+// boolean backgroundOnly = true;
+// int countFreeRows = 0;
+// for(int c = row; c<bim.getHeight();c++){
+// countFreeRows++;
+// for(int col = 0; col < bim.getWidth(); col++){
+// int val = bim.getRGB(col, c);
+// if(val != bgColor){//end of bg
+// backgroundOnly = false;
+// row = c;
+// break;
+// }
+// }
+// if(!backgroundOnly){
+// break;
+// }else{
+// if(countFreeRows >= table_height+signatureMarginVertical){
+// posY = row;
+// row=bim.getHeight();
+// break;
+// }
+// }
+// }
+// }
+//
+// if(posY == -1)
+// return Float.NEGATIVE_INFINITY;
+// return posY;
+// }
+
+ public static Color determineBackgroundColor(BufferedImage bim){
+
+ int inset = 5;//px
+
+ int pixelUpLeft = bim.getRGB(inset,inset);
+ int pixelUpRight = bim.getRGB(bim.getWidth()-inset,inset);
+ int pixelDownLeft = bim.getRGB(inset, bim.getHeight()-inset);
+ int pixelDownRight = bim.getRGB(bim.getWidth()-inset, bim.getHeight()-inset);
+
+ HashMap<Integer, Integer> stats = new HashMap<Integer, Integer>();
+ stats.put(pixelUpLeft, 0);
+ stats.put(pixelUpRight, 0);
+ stats.put(pixelDownLeft, 0);
+ stats.put(pixelDownRight, 0);
+
+ stats.put(pixelUpLeft, stats.get(pixelUpLeft)+1);
+ stats.put(pixelUpRight, stats.get(pixelUpRight)+1);
+ stats.put(pixelDownLeft, stats.get(pixelDownLeft)+1);
+ stats.put(pixelDownRight, stats.get(pixelDownRight)+1);
+ int bgValue = -1;
+ int cnt =0;
+ for(int key:stats.keySet()){
+ if(stats.get(key) > cnt){
+ cnt = stats.get(key);
+ bgValue = key;
+ }
+ }
+
+ return new Color(bgValue);
+ }
+
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 16:00:48 +0000