Allow setting signature position with keyboard

git-svn-id: https://svn.iaik.tugraz.at/svn/egiz/prj/current/12PDF-OVER-4.0@12716 3a0b52a2-8410-0410-bc02-ff6273a87459

2 files changed, 43 insertions, 2 deletions

diff --git a/trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/PositioningComposite.java b/trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/PositioningComposite.java
index 33506f00..9d96fb94 100644
--- a/trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/PositioningComposite.java
+++ b/trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/PositioningComposite.java
@@ -45,8 +45,7 @@ import at.asit.pdfover.signator.SignaturePosition;
 import com.sun.pdfview.PDFFile;
 
 /**
- * 
- *
+ * Composite which allows to position the signature on a preview of the document 
  */
 public class PositioningComposite extends StateComposite {
 	/**
@@ -55,6 +54,9 @@ public class PositioningComposite extends StateComposite {
 	static final Logger log = LoggerFactory
 			.getLogger(PositioningComposite.class);
 
+	/** How far to displace the signature with the arrow keys */
+	private static final int SIGNATURE_KEYBOARD_POSITIONING_OFFSET = 15;
+
 	private SignaturePanel viewer = null;
 
 	private PDFFile pdf = null;
@@ -139,6 +141,8 @@ public class PositioningComposite extends StateComposite {
 		@Override
 		public void keyPressed(KeyEvent e) {
 			int newPage = PositioningComposite.this.currentPage;
+			int sigXOffset = 0;
+			int sigYOffset = 0;
 
 			switch (e.keyCode)
 			{
@@ -164,10 +168,29 @@ public class PositioningComposite extends StateComposite {
 				case SWT.KEYPAD_CR:
 					PositioningComposite.this.setFinalPosition();
 					break;
+
+				case SWT.ARROW_LEFT:
+					sigXOffset -= SIGNATURE_KEYBOARD_POSITIONING_OFFSET;
+					break;
+
+				case SWT.ARROW_RIGHT:
+					sigXOffset += SIGNATURE_KEYBOARD_POSITIONING_OFFSET;
+					break;
+
+				case SWT.ARROW_UP:
+					sigYOffset -= SIGNATURE_KEYBOARD_POSITIONING_OFFSET;
+					break;
+
+				case SWT.ARROW_DOWN:
+					sigYOffset += SIGNATURE_KEYBOARD_POSITIONING_OFFSET;
+					break;
 			}
 
 			if (newPage != PositioningComposite.this.currentPage)
 				showPage(newPage);
+
+			if (sigXOffset != 0 || sigYOffset != 0)
+				PositioningComposite.this.translateSignaturePosition(sigXOffset, sigYOffset);
 		}
 	};
 
@@ -224,6 +247,15 @@ public class PositioningComposite extends StateComposite {
 	}
 
 	/**
+	 * Translate the signature placeholder position
+	 * @param sigXOffset signature placeholder horizontal position offset
+	 * @param sigYOffset signature placeholder vertical position offset
+	 */
+	public void translateSignaturePosition(int sigXOffset, int sigYOffset) {
+		PositioningComposite.this.viewer.translateSignaturePosition(sigXOffset, sigYOffset);
+	}
+
+	/**
 	 * Set the signature position and continue to the next state
 	 * @param position the signature position
 	 */
diff --git a/trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SignaturePanel.java b/trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SignaturePanel.java
index b2f5270f..c9c223b8 100644
--- a/trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SignaturePanel.java
+++ b/trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SignaturePanel.java
@@ -136,6 +136,15 @@ public class SignaturePanel extends JPanel {
 	}
 
 	/**
+	 * Translate the signature placeholder position
+	 * @param sigXOffset signature placeholder horizontal position offset
+	 * @param sigYOffset signature placeholder vertical position offset
+	 */
+	public void translateSignaturePosition(int sigXOffset, int sigYOffset) {
+		updateSigPos((int) this.sigScreenPos.getX() + sigXOffset, (int) this.sigScreenPos.getY() + sigYOffset);
+	}
+
+	/**
 	 * Get the current horizontal position of the signature
 	 * @return signature x coordinate
 	 */