diff options
Diffstat (limited to 'trunk/pdf-over-gui')
| -rw-r--r-- | trunk/pdf-over-gui/pom.xml | 4 | ||||
| -rw-r--r-- | trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/PDFViewerComposite.java | 155 |
2 files changed, 159 insertions, 0 deletions
diff --git a/trunk/pdf-over-gui/pom.xml b/trunk/pdf-over-gui/pom.xml index 68937df2..606f6d1b 100644 --- a/trunk/pdf-over-gui/pom.xml +++ b/trunk/pdf-over-gui/pom.xml @@ -34,6 +34,10 @@ <groupId>commons-httpclient</groupId> <artifactId>commons-httpclient</artifactId> </dependency> + <dependency> + <groupId>org.icepdf</groupId> + <artifactId>icepdf-core</artifactId> + </dependency> </dependencies> <profiles> diff --git a/trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/PDFViewerComposite.java b/trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/PDFViewerComposite.java new file mode 100644 index 00000000..1637da9e --- /dev/null +++ b/trunk/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/PDFViewerComposite.java @@ -0,0 +1,155 @@ +/* + * 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.gui.composites; + +// Imports +import java.awt.Canvas; +import java.awt.Dimension; +import java.awt.Frame; +import java.awt.Graphics; +import java.awt.geom.Rectangle2D; +import java.io.File; +import java.io.IOException; + +import org.eclipse.swt.SWT; +import org.eclipse.swt.awt.SWT_AWT; +import org.eclipse.swt.events.KeyAdapter; +import org.eclipse.swt.events.KeyEvent; +import org.eclipse.swt.widgets.Composite; +import org.icepdf.core.exceptions.PDFException; +import org.icepdf.core.exceptions.PDFSecurityException; +import org.icepdf.core.pobjects.Document; +import org.icepdf.core.pobjects.Page; +import org.icepdf.core.util.GraphicsRenderingHints; + +/** + * Displays a PDF document + */ +public class PDFViewerComposite extends Composite { + + /** + * PDF document + */ + protected Document document; + + /** + * Currently selected page in the document + */ + protected int page; + + /** + * Get the currently selected page in the document + * @return current page + */ + public int getPage() { + return this.page; + } + + /** + * Set the visible page in the document + * @param page new active page + */ + public void setPage(int page) { + this.page = page; + this.canvas.repaint(); + } + + /** + * AWT Canvas displaying the document + */ + private Canvas canvas; + + /** + * Create the PDF Viewer composite. + * @param parent parent Composite + * @param style + * @param document + * @throws PDFException Error parsing PDF document + * @throws PDFSecurityException Error decrypting PDF document (not supported) + * @throws IOException I/O Error + */ + public PDFViewerComposite(Composite parent, int style, File document) throws PDFException, PDFSecurityException, IOException { + super(parent, style); + this.document = new Document(); + this.document.setFile(document.getPath()); + int pages = this.document.getNumberOfPages(); + + final Dimension[] base_dimensions = new Dimension[pages]; + for (int page = 0; page < pages; ++page) + base_dimensions[page] = this.document.getPageDimension(page, 0f, 1.0f).toDimension(); + + this.page = pages - 1; + + Frame frame = SWT_AWT.new_Frame(this); + this.canvas = new Canvas() { + private static final long serialVersionUID = 1L; + + @Override + public void paint(Graphics g) { + if (g == null || g.getClip() == null) + return; + int page = getPage(); + // Make page always fit to window + Rectangle2D clip = g.getClip().getBounds2D(); + double h_zoom = clip.getWidth() / base_dimensions[page].width; + double v_zoom = clip.getHeight() / base_dimensions[page].height; + float zoom = (float) (h_zoom < v_zoom ? h_zoom : v_zoom); + if (v_zoom < h_zoom) + { + // Page is narrower than window, center it + g.translate((int) ((clip.getWidth() - (base_dimensions[page].width * zoom)) / 2), 0); + } + + PDFViewerComposite.this.document.paintPage(page, g, GraphicsRenderingHints.SCREEN, Page.BOUNDARY_CROPBOX, 0f, zoom); + } + }; + frame.add(this.canvas); + frame.pack(); + frame.setVisible(true); + + this.addKeyListener(new KeyAdapter() { + @Override + public void keyPressed(KeyEvent e) { + int page = getPage(); + int old_page = page; + + switch (e.keyCode) + { + case SWT.PAGE_DOWN: + if (page < (PDFViewerComposite.this.document.getNumberOfPages() - 1)) + ++page; + break; + + case SWT.PAGE_UP: + if (page > 0) + --page; + break; + + case SWT.END: + page = (PDFViewerComposite.this.document.getNumberOfPages() - 1); + break; + + case SWT.HOME: + page = 0; + break; + } + + if (page != old_page) + setPage(page); + } + }); + } +} |