Allow creation of a new page

git-svn-id: https://svn.iaik.tugraz.at/svn/egiz/prj/current/12PDF-OVER-4.0@12774 3a0b52a2-8410-0410-bc02-ff6273a87459

2 files changed, 64 insertions, 6 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 b7adaddd..9d3fa864 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
@@ -70,6 +70,8 @@ public class PositioningComposite extends StateComposite {
 
 	private Composite mainArea = null;
 
+	Button btnNewPage = null;
+
 	Label lblPage = null;
 
 	ScrollBar scrollbar = null;
@@ -113,10 +115,26 @@ public class PositioningComposite extends StateComposite {
 			}
 		});
 
+		this.btnNewPage = new Button(bottomBar, SWT.TOGGLE);
+		this.btnNewPage.setText(Messages.getString("positioning.newPage")); //$NON-NLS-1$
+		FormData fd_btnNewPage = new FormData();
+		fd_btnNewPage.right = new FormAttachment(btnSign);
+		fd_btnNewPage.top = new FormAttachment(0);
+		this.btnNewPage.setLayoutData(fd_btnNewPage);
+		this.btnNewPage.addSelectionListener(new SelectionAdapter() {
+			@Override
+			public void widgetSelected(SelectionEvent e) {
+				if (PositioningComposite.this.currentPage > PositioningComposite.this.numPages)
+					showPage(PositioningComposite.this.numPages);
+				else
+					showPage(PositioningComposite.this.numPages + 1);
+			}
+		});
+
 		this.lblPage = new Label(bottomBar, SWT.CENTER);
 		FormData fd_lblPage = new FormData();
 		fd_lblPage.left = new FormAttachment(0);
-		fd_lblPage.right = new FormAttachment(btnSign, 5);
+		fd_lblPage.right = new FormAttachment(this.btnNewPage, 5);
 		fd_lblPage.bottom = new FormAttachment(100);
 		this.lblPage.setLayoutData(fd_lblPage);
 
@@ -293,6 +311,15 @@ public class PositioningComposite extends StateComposite {
 						"Page %d of %d", //$NON-NLS-1$
 						PositioningComposite.this.currentPage,
 						PositioningComposite.this.numPages));
+				if (PositioningComposite.this.currentPage > PositioningComposite.this.numPages) {
+					PositioningComposite.this.btnNewPage.setText(
+							Messages.getString("positioning.removeNewPage")); //$NON-NLS-1$
+					PositioningComposite.this.btnNewPage.setSelection(true);
+				} else {
+					PositioningComposite.this.btnNewPage.setText(
+							Messages.getString("positioning.newPage")); //$NON-NLS-1$
+					PositioningComposite.this.btnNewPage.setSelection(false);
+				}
 			}
 		});
 		this.viewer.showPage(page);
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 33afce4a..353b2b66 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
@@ -93,6 +93,10 @@ public class SignaturePanel extends JPanel {
 	int prevSigScreenHeight = 0;
 	/** Color of the signature placeholder border */
 	private Color sigPlaceholderBorderColor = Color.BLUE;
+	/** Current page */
+	int page = 0;
+	/** Number of pages in the document */
+	int numPages = 0;
 
 	/**
 	 * Create a new PagePanel.
@@ -114,7 +118,8 @@ public class SignaturePanel extends JPanel {
 	public void setDocument(PDFFile pdf) {
 		this.pdf = pdf;
 		this.sigPagePos = null;
-		showPage(pdf.getNumPages());
+		this.numPages = pdf.getNumPages();
+		showPage(this.numPages);
 	}
 
 	/**
@@ -144,11 +149,20 @@ public class SignaturePanel extends JPanel {
 	 * @param page the number of the page to display
 	 */
 	public void showPage(int page) {
-		//sigPagePos = null;
+		this.page = page;
 		showPage(this.pdf.getPage(page));
 	}
 
 	/**
+	 * Add and display a new page at the end of the document
+	 * 
+	 * This page has the same dimensions as the old last page
+	 */
+	public void addNewLastPage() {
+		showPage(this.numPages + 1);
+	}
+
+	/**
 	 * Translate the signature placeholder position
 	 * @param sigXOffset signature placeholder horizontal position offset
 	 * @param sigYOffset signature placeholder vertical position offset
@@ -195,8 +209,17 @@ public class SignaturePanel extends JPanel {
 			this.currentPage.stop(this.prevSize.width, this.prevSize.height, null);
 		}
 
+		boolean newPage = false;
 		// set up the new page
-		this.currentPage = page;
+		if (this.page > this.numPages)
+		{
+			// New last page - use old last page as template
+			this.currentPage = this.pdf.getPage(this.numPages);
+			newPage = true;
+		}
+		else
+			this.currentPage = page;
+
 
 		if (this.currentPage == null) {
 			// no page
@@ -215,8 +238,16 @@ public class SignaturePanel extends JPanel {
 					null);
 
 			// get the new image
-			this.currentImage = this.currentPage.getImage(pageSize.width, pageSize.height,
-					null, this);
+			if (newPage)
+			{
+				this.currentImage = new BufferedImage(pageSize.width, pageSize.height, BufferedImage.TYPE_INT_RGB);
+				Graphics g = this.currentImage.getGraphics();
+				g.setColor(Color.WHITE);
+				g.fillRect(0, 0, pageSize.width, pageSize.height);
+			}
+			else
+				this.currentImage = this.currentPage.getImage(pageSize.width, pageSize.height,
+						null, this);
 
 			// calculate the transform from page to screen space
 			this.currentXform = this.currentPage.getInitialTransform(pageSize.width,