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author | Tobias Kellner <tobias.kellner@iaik.tugraz.at> | 2016-10-10 18:35:33 +0200 |
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committer | Tobias Kellner <tobias.kellner@iaik.tugraz.at> | 2016-10-25 17:00:13 +0200 |
commit | 5962867b411bc53bf14938b0312414f040986b54 (patch) | |
tree | 91c25af9dd61249f047f0567e0f72b87abda3091 | |
parent | 1f614332bcd103229f15f51157a52824005fba96 (diff) | |
download | pdf-over-5962867b411bc53bf14938b0312414f040986b54.tar.gz pdf-over-5962867b411bc53bf14938b0312414f040986b54.tar.bz2 pdf-over-5962867b411bc53bf14938b0312414f040986b54.zip |
Cache (and scale) custom emblem images
6 files changed, 170 insertions, 10 deletions
diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SimpleConfigurationComposite.java b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SimpleConfigurationComposite.java index a124c86d..4c02c044 100644 --- a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SimpleConfigurationComposite.java +++ b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SimpleConfigurationComposite.java @@ -70,7 +70,7 @@ import at.asit.pdfover.gui.workflow.config.ConfigManipulator; import at.asit.pdfover.gui.workflow.config.ConfigurationContainer; import at.asit.pdfover.gui.workflow.config.PersistentConfigProvider; import at.asit.pdfover.gui.workflow.states.State; -import at.asit.pdfover.signator.FileNameEmblem; +import at.asit.pdfover.signator.CachedFileNameEmblem; import at.asit.pdfover.signator.SignatureParameter; /** @@ -619,7 +619,7 @@ public class SimpleConfigurationComposite extends BaseConfigurationComposite { param.setSignaturePdfACompat(this.configurationContainer.getSignaturePdfACompat()); if (image != null && !image.trim().isEmpty()) { logo = new ImageData(image); - param.setEmblem(new FileNameEmblem(image)); + param.setEmblem(new CachedFileNameEmblem(image)); } img = SignaturePlaceholderCache.getSWTPlaceholder(param); diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/utils/SignaturePlaceholderCache.java b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/utils/SignaturePlaceholderCache.java index 87ce24ee..306f74b7 100644 --- a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/utils/SignaturePlaceholderCache.java +++ b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/utils/SignaturePlaceholderCache.java @@ -33,6 +33,8 @@ import org.slf4j.Logger; import org.slf4j.LoggerFactory; import at.asit.pdfover.gui.Constants; +import at.asit.pdfover.signator.CachedFileNameEmblem; +import at.asit.pdfover.signator.Emblem; import at.asit.pdfover.signator.SignatureParameter; /** @@ -71,7 +73,15 @@ public class SignaturePlaceholderCache { final String sigNoteProp = "NOTE"; //$NON-NLS-1$ String sigLang = param.getSignatureLanguage(); - String sigEmbl = (param.getEmblem() == null ? "" : param.getEmblem().getFileName()); //$NON-NLS-1$ + String sigEmbl = ""; //$NON-NLS-1$ + if (param.getEmblem() != null) { + Emblem embl = param.getEmblem(); + if (embl instanceof CachedFileNameEmblem) { + sigEmbl = ((CachedFileNameEmblem) embl).getOriginalFileName(); + } else { + sigEmbl = embl.getFileName(); + } + } String sigPdfA = param.getSignaturePdfACompat() ? Constants.TRUE : Constants.FALSE; String sigNote = param.getProperty("SIG_NOTE"); //$NON-NLS-1$ if (sigNote == null) diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/PositioningState.java b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/PositioningState.java index ae1303c8..32b335a7 100644 --- a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/PositioningState.java +++ b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/PositioningState.java @@ -36,8 +36,8 @@ import at.asit.pdfover.gui.utils.SignaturePlaceholderCache; import at.asit.pdfover.gui.workflow.StateMachine; import at.asit.pdfover.gui.workflow.Status; import at.asit.pdfover.gui.workflow.config.ConfigProvider; +import at.asit.pdfover.signator.CachedFileNameEmblem; import at.asit.pdfover.signator.Emblem; -import at.asit.pdfover.signator.FileNameEmblem; import at.asit.pdfover.signator.SignatureParameter; import at.asit.pdfover.signator.SignaturePosition; @@ -104,7 +104,7 @@ public class PositioningState extends State { // Update possibly changed values ConfigProvider config = stateMachine.getConfigProvider(); SignatureParameter param = stateMachine.getPDFSigner().getPDFSigner().newParameter(); - Emblem emblem = new FileNameEmblem(config.getDefaultEmblem()); + Emblem emblem = new CachedFileNameEmblem(config.getDefaultEmblem()); param.setEmblem(emblem); if(config.getSignatureNote() != null && !config.getSignatureNote().isEmpty()) { param.setProperty("SIG_NOTE", config.getSignatureNote()); //$NON-NLS-1$ diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/PrepareSigningState.java b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/PrepareSigningState.java index 45636568..155073d6 100644 --- a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/PrepareSigningState.java +++ b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/PrepareSigningState.java @@ -26,14 +26,14 @@ import org.slf4j.LoggerFactory; import at.asit.pdfover.gui.MainWindow.Buttons; import at.asit.pdfover.gui.MainWindowBehavior; import at.asit.pdfover.gui.composites.WaitingComposite; -import at.asit.pdfover.gui.controls.ErrorDialog; import at.asit.pdfover.gui.controls.Dialog.BUTTONS; +import at.asit.pdfover.gui.controls.ErrorDialog; import at.asit.pdfover.gui.utils.Messages; import at.asit.pdfover.gui.workflow.StateMachine; import at.asit.pdfover.gui.workflow.Status; import at.asit.pdfover.gui.workflow.config.ConfigProvider; import at.asit.pdfover.signator.BKUs; -import at.asit.pdfover.signator.FileNameEmblem; +import at.asit.pdfover.signator.CachedFileNameEmblem; import at.asit.pdfover.signator.PDFFileDocumentSource; import at.asit.pdfover.signator.SignatureParameter; import at.asit.pdfover.signator.Signer; @@ -144,7 +144,7 @@ public class PrepareSigningState extends State { if (configuration.getDefaultEmblem() != null && !configuration.getDefaultEmblem().isEmpty()) { - this.state.signatureParameter.setEmblem(new FileNameEmblem( + this.state.signatureParameter.setEmblem(new CachedFileNameEmblem( configuration.getDefaultEmblem())); } diff --git a/pdf-over-signator/src/main/java/at/asit/pdfover/signator/CachedFileNameEmblem.java b/pdf-over-signator/src/main/java/at/asit/pdfover/signator/CachedFileNameEmblem.java new file mode 100644 index 00000000..dc54d84a --- /dev/null +++ b/pdf-over-signator/src/main/java/at/asit/pdfover/signator/CachedFileNameEmblem.java @@ -0,0 +1,150 @@ +/* + * Copyright 2012 by A-SIT, Secure Information Technology Center Austria + * + * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by + * the European Commission - subsequent versions of the EUPL (the "Licence"); + * You may not use this work except in compliance with the Licence. + * You may obtain a copy of the Licence at: + * http://joinup.ec.europa.eu/software/page/eupl + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the Licence is distributed on an "AS IS" basis, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the Licence for the specific language governing permissions and + * limitations under the Licence. + */ +package at.asit.pdfover.signator; + +// Imports +import java.awt.Graphics2D; +import java.awt.image.BufferedImage; +import java.io.File; +import java.io.FileInputStream; +import java.io.FileOutputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; +import java.nio.file.Files; +import java.nio.file.Paths; +import java.util.Properties; + +import javax.imageio.ImageIO; + +import org.apache.commons.codec.digest.DigestUtils; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * + */ +public class CachedFileNameEmblem implements Emblem { + /** + * SLF4J Logger instance + **/ + private static final Logger log = LoggerFactory + .getLogger(CachedFileNameEmblem.class); + + private String fileName = null; + + /** + * Constructor + * @param filename + */ + public CachedFileNameEmblem(String filename) { + this.fileName = filename; + } + + private String getFileHash(String filename) throws IOException { + InputStream is = Files.newInputStream(Paths.get(this.fileName)); + return DigestUtils.md5Hex(is); + } + + /* (non-Javadoc) + * @see at.asit.pdfover.signator.Emblem#getFileName() + */ + @Override + public String getFileName() { + final String fileDir = System.getProperty("user.home") + File.separator + ".pdf-over"; //$NON-NLS-1$ //$NON-NLS-2$ + final String imgFileName = ".emblem"; //$NON-NLS-1$ + final String imgFileExt = "png"; //$NON-NLS-1$ + final String propFileName = ".emblem.properties"; //$NON-NLS-1$ + + final String imgProp = "IMG"; //$NON-NLS-1$ + final String hshProp = "HSH"; //$NON-NLS-1$ + final int maxWidth = 480; + final int maxHeight = 600; + + String emblemImg = this.fileName; + String emblemHsh = null; + String cachedEmblemFileName = fileDir + File.separator + imgFileName + "." + imgFileExt; //$NON-NLS-1$ + + if (emblemImg == null || !(new File(emblemImg).exists())) + return null; + + Properties emblemProps = new Properties(); + // compare cache, try to load if match + try { + InputStream in = new FileInputStream(new File(fileDir, propFileName)); + emblemProps.load(in); + if (emblemImg.equals(emblemProps.getProperty(imgProp))) { + emblemHsh = getFileHash(emblemImg); + if (emblemHsh.equals(emblemProps.getProperty(hshProp))) { + log.debug("Emblem cache hit: " + cachedEmblemFileName); //$NON-NLS-1$ + return cachedEmblemFileName; //$NON-NLS-1$ + } + } + log.debug("Emblem cache miss"); + } catch (Exception e) { + log.warn("Can't load emblem cache", e); //$NON-NLS-1$ + } + + try { + // create new cache + if (emblemHsh == null) + emblemHsh = getFileHash(emblemImg); + emblemProps.setProperty(imgProp, emblemImg); + emblemProps.setProperty(hshProp, emblemHsh); + BufferedImage img = ImageIO.read(new File(emblemImg)); + int oheight = img.getHeight(); + int owidth = img.getWidth(); + double ratio = (double)owidth/(double)oheight; + + int height = oheight; + int width = owidth; + if (height > maxHeight) { + height = maxHeight; + width = (int) (maxHeight * ratio); + } + if (width > maxWidth) { + width = maxWidth; + height = (int) (maxWidth / ratio); + } + BufferedImage cacheImg = img; + if (width != owidth || height == oheight) { + //scale image + log.debug("Scaling emblem: " + owidth + "x" + oheight + " to " + width + "x" + height); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ + cacheImg = new BufferedImage(width, height, img.getType() == 0 ? BufferedImage.TYPE_INT_ARGB : img.getType()); + Graphics2D g = cacheImg.createGraphics(); + g.drawImage(img, 0, 0, width, height, null); + g.dispose(); + } + + File file = new File(fileDir, imgFileName + "." + imgFileExt); //$NON-NLS-1$ + ImageIO.write(cacheImg, imgFileExt, file); // ignore returned boolean + OutputStream out = new FileOutputStream(new File(fileDir, propFileName)); + emblemProps.store(out, null); + } catch (IOException e) { + log.error("Can't save emblem cache", e); //$NON-NLS-1$ + return this.fileName; + } + return cachedEmblemFileName; + } + + /** + * Return the original filename + * @return the original filename + */ + public String getOriginalFileName() { + return this.fileName; + } +} diff --git a/pdf-over-signator/src/main/java/at/asit/pdfover/signator/SignatureParameter.java b/pdf-over-signator/src/main/java/at/asit/pdfover/signator/SignatureParameter.java index 8b08e3dd..8e1b965e 100644 --- a/pdf-over-signator/src/main/java/at/asit/pdfover/signator/SignatureParameter.java +++ b/pdf-over-signator/src/main/java/at/asit/pdfover/signator/SignatureParameter.java @@ -162,9 +162,9 @@ public abstract class SignatureParameter { public abstract SignatureDimension getPlaceholderDimension(); /** - * Gets the Dimension to display the Placeholder + * Gets the Placeholder image * - * @return the placeholder dimensions + * @return the placeholder image */ public abstract Image getPlaceholder(); |