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author | Jakob Heher <jakob.heher@iaik.tugraz.at> | 2022-08-04 16:27:31 +0200 |
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committer | Jakob Heher <jakob.heher@iaik.tugraz.at> | 2022-08-04 16:27:31 +0200 |
commit | 8e6acd9237c2458c66f8c747a64a1feb68172b35 (patch) | |
tree | 00ba6a0a4df079836520e5a942c5f55ac75c27ee /pdf-over-signator/src/main | |
parent | 256a1b2cfbc72c33eb08d361591bdb3f52a34b64 (diff) | |
download | pdf-over-8e6acd9237c2458c66f8c747a64a1feb68172b35.tar.gz pdf-over-8e6acd9237c2458c66f8c747a64a1feb68172b35.tar.bz2 pdf-over-8e6acd9237c2458c66f8c747a64a1feb68172b35.zip |
emblem image parsing for width/height cf. #113
Diffstat (limited to 'pdf-over-signator/src/main')
-rw-r--r-- | pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java | 39 |
1 files changed, 27 insertions, 12 deletions
diff --git a/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java b/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java index 4c093d29..26f05f08 100644 --- a/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java +++ b/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java @@ -20,6 +20,7 @@ import at.asit.pdfover.commons.Constants; import at.asit.pdfover.commons.utils.ImageUtil; import java.awt.Graphics2D; +import java.awt.Image; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileInputStream; @@ -38,7 +39,7 @@ import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** - * + * TODO all of this caching business is a bit of a mess */ public class Emblem { /** @@ -56,18 +57,31 @@ public class Emblem { private static final int MAX_EMBLEM_WIDTH = 480; private static final int MAX_EMBLEM_HEIGHT = 600; - private String fileName = null; + private String originalFileName = null; + private Image image = null; /* image data, if we have it */ + + private void lazyLoadImage() { + if (this.image != null) return; + + String filename = getCachedFileName(); + if (this.image != null) return; /* getCachedFileName may have re-generated the cache and populated this.image */ + + try { + image = ImageUtil.readImageWithEXIFRotation(new File(filename)); + } catch (IOException e) { + log.warn("Failed to load Emblem image"); + } + } - // TODO actual values - public int getWidth() { return 190; } - public int getHeight() { return 96; } + public int getWidth() { if (image == null) lazyLoadImage(); return (image != null) ? image.getWidth(null) : 0; } + public int getHeight() { if (image == null) lazyLoadImage(); return (image != null) ? image.getHeight(null) : 0; } /** * Constructor * @param filename */ public Emblem(String filename) { - this.fileName = filename; + this.originalFileName = filename; } private String getFileHash(String filename) throws IOException { @@ -106,8 +120,8 @@ public class Emblem { /* (non-Javadoc) * @see at.asit.pdfover.signator.Emblem#getFileName() */ - public String getFileName() { - String emblemImg = this.fileName; + public String getCachedFileName() { + String emblemImg = this.originalFileName; String emblemHsh = null; String cachedEmblemFileName = CACHE_DIR + File.separator + CACHE_IMG_FILENAME; @@ -144,11 +158,12 @@ public class Emblem { File file = new File(CACHE_DIR, CACHE_IMG_FILENAME); ImageIO.write(img, CACHE_IMG_FORMAT, file); // ignore returned boolean + this.image = img; OutputStream out = new FileOutputStream(new File(CACHE_DIR, CACHE_PROPS_FILENAME)); emblemProps.store(out, null); } catch (IOException e) { log.error("Can't save emblem cache", e); - return this.fileName; + return this.originalFileName; } return cachedEmblemFileName; } @@ -158,7 +173,7 @@ public class Emblem { * @return the original filename */ public String getOriginalFileName() { - return this.fileName; + return this.originalFileName; } /** @@ -166,10 +181,10 @@ public class Emblem { * @return the original filename */ public String getOriginalFileHash() { - if (this.fileName == null || !(new File(this.fileName).exists())) + if (this.originalFileName == null || !(new File(this.originalFileName).exists())) return ""; try { - return getFileHash(this.fileName); + return getFileHash(this.originalFileName); } catch (IOException e) { log.debug("Error getting file hash", e); return ""; |