diff options
Diffstat (limited to 'pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SignaturePanel.java')
| -rw-r--r-- | pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SignaturePanel.java | 483 |
1 files changed, 0 insertions, 483 deletions
diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SignaturePanel.java b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SignaturePanel.java deleted file mode 100644 index df880459..00000000 --- a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SignaturePanel.java +++ /dev/null @@ -1,483 +0,0 @@ -/*
- * 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.BorderLayout;
-import java.awt.Color;
-import java.awt.Cursor;
-import java.awt.Dimension;
-import java.awt.Graphics;
-import java.awt.Image;
-import java.awt.event.MouseAdapter;
-import java.awt.event.MouseEvent;
-import java.awt.geom.Point2D;
-import java.awt.geom.Rectangle2D;
-import java.awt.image.BufferedImage;
-import java.io.IOException;
-
-import javax.annotation.CheckForNull;
-import javax.swing.JPanel;
-
-import org.apache.pdfbox.pdmodel.PDDocument;
-import org.apache.pdfbox.pdmodel.PDPage;
-import org.apache.pdfbox.pdmodel.common.PDRectangle;
-import org.apache.pdfbox.rendering.PDFRenderer;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import at.asit.pdfover.commons.Messages;
-
-/**
- *
- */
-public class SignaturePanel extends JPanel {
- /**
- * SLF4J Logger instance
- **/
- private static final Logger log = LoggerFactory.getLogger(SignaturePanel.class);
-
- /** Default serial version ID */
- private static final long serialVersionUID = 1L;
-
- /** The PDF file being displayed */
- private PDDocument pdf = null;
- private PDFRenderer renderer = null;
-
- /** The image of the rendered PDF page being displayed */
- Image currentImage = null;
-
- /** The current scale for rendering pdf to image */
- private float pageToImageScale;
- /** The current scale for rendering image to screen */
- private double imageToScreenScale;
- /* scaling */
- private enum U {
- /* (0,0) is bottom-left of page */
- PAGE_ABS,
- /* (0,0) is top-left of page */
- PAGE_REL,
- /* pixels, (0,0) is top-left of image */
- IMAGE,
- /* pixels, (0,0) is top-left of image */
- SCREEN_REL,
- /* pixels, (0,0) is top-left of canvas */
- SCREEN_ABS };
- private enum Dim { X, Y };
- private double scale(double v, U from, U to, Dim d)
- {
- if (from == to) return v;
-
- if (from == U.PAGE_ABS) {
- return scale((d == Dim.X) ? v : (this.pageHeight - v), U.PAGE_REL, to, d);
- } else if (from == U.PAGE_REL) {
- if (to == U.PAGE_ABS)
- return ((d == Dim.X) ? v : (this.pageHeight - v));
- else
- return scale(v * this.pageToImageScale, U.IMAGE, to, d);
- } else if (from == U.IMAGE) {
- if ((to == U.PAGE_ABS) || (to == U.PAGE_REL))
- return scale(v / this.pageToImageScale, U.PAGE_REL, to, d);
- else
- return scale(v * this.imageToScreenScale, U.SCREEN_REL, to, d);
- } else if (from == U.SCREEN_REL) {
- if (to == U.SCREEN_ABS)
- return (v + ((d == Dim.X) ? this.offX : this.offY));
- else
- return scale(v / this.imageToScreenScale, U.IMAGE, to, d);
- } else if (from == U.SCREEN_ABS) {
- return scale(v - ((d == Dim.X) ? this.offX : this.offY), U.SCREEN_REL, to, d);
- } else throw new RuntimeException("unreachable");
- }
-
- private float pageWidth = 0;
- private float pageHeight = 0;
- /** The horizontal offset of the image from the left edge of the panel */
- private int offX = 0;
- /** The vertical offset of the image from the top of the panel */
- private int offY = 0;
- /** The position of the top-left corner of the signature, in absolute page space */
- private Point2D sigPagePos = null;
- public @CheckForNull Point2D getSigPagePos() { return this.sigPagePos; }
- /** The signature placeholder image */
- private Image sigPlaceholder = null;
- /** Width of the signature placeholder in page space */
- private int sigPageWidth = 0;
- /** Height of the signature placeholder in page space */
- private int sigPageHeight = 0;
- /** Color of the signature placeholder border */
- private Color sigPlaceholderBorderColor = Color.BLUE;
- /** Current page */
- private int currentPageNo = 0;
- /** Number of pages in the document */
- private int numPages = 0;
- /** Cursor types */
- private static enum Cursors {DEFAULT, HAND, MOVE};
- /** Default arrow cursor */
- private final Cursor defaultCursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
- /** Hand cursor */
- private final Cursor handCursor = Cursor.getPredefinedCursor(Cursor.HAND_CURSOR);
- /** Move cursor */
- private final Cursor moveCursor = Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR);
- /** Current cursor */
- private Cursors currentCursor = Cursors.DEFAULT;
-
- /**
- * Create a new PagePanel.
- */
- public SignaturePanel() {
- super(new BorderLayout());
- setDocument(null);
- setFocusable(true);
- addMouseListener(this.mouseListener);
- addMouseMotionListener(this.mouseListener);
- }
-
- /**
- * Set a new document to be displayed
- * @param pdf the PDFFile to be displayed
- */
- public void setDocument(PDDocument pdf) {
- this.pdf = pdf;
- this.sigPagePos = null;
- if (pdf != null)
- {
- this.renderer = new PDFRenderer(pdf);
- this.numPages = pdf.getNumberOfPages();
- this.currentPageNo = -1;
- showPage(this.numPages);
- }
- else
- {
- this.renderer = null;
- this.currentPageNo = 0;
- this.numPages = 0;
- renderPageToImage();
- repaint();
- }
- }
-
- /**
- * Set the signature placeholder image
- * @param placeholder signature placeholder
- * @param width width of the placeholder in page space
- * @param height height of the placeholder in page space
- */
- public void setSignaturePlaceholder(Image placeholder) {
- this.sigPlaceholder = placeholder;
- // TODO figure out why this is divided by 4 (factor ported from old code)
- this.sigPageWidth = placeholder.getWidth(null) / 4;
- this.sigPageHeight = placeholder.getHeight(null) / 4;
- renderPageToImage();
- if (this.sigPagePos != null)
- setSignaturePosition(this.sigPagePos.getX(), this.sigPagePos.getY());
- repaint();
- }
-
- /**
- * Set the color of the signature placeholder border
- * @param color new signature placeholder border color
- */
- public void setSignaturePlaceholderBorderColor(Color color) {
- this.sigPlaceholderBorderColor = color;
- }
-
- /**
- * Change the currently displayed page
- * @param page the number of the page to display
- */
- public void showPage(int page) {
- if (this.currentPageNo == page) return;
- this.currentPageNo = page;
- renderPageToImage();
- repaint();
- }
-
- /**
- * 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);
- }
-
- /**
- * Set the signature placeholder position
- * @param x the horizontal signature position
- * @param y the vertical signature position
- */
- public void setSignaturePosition(double x, double y)
- {
- this.sigPagePos = new Point2D.Double(
- clamp(x, 0, this.pageWidth - this.sigPageWidth),
- clamp(y, this.sigPageHeight, this.pageHeight)
- );
- repaint();
- }
-
- public void translateSignaturePagePosition(float dX, float dY) {
- setSignaturePosition(this.sigPagePos.getX() + dX, this.sigPagePos.getY() + dY);
- }
-
- /**
- * Stop the generation of any previous page, and draw the new one.
- *
- * @param page the PDFPage to draw.
- */
- private synchronized void renderPageToImage() {
- if (this.pdf == null)
- {
- this.currentImage = null;
- return;
- }
-
- boolean newPage = false;
- PDPage currentPage;
- // set up the new page
- if (this.currentPageNo > this.numPages)
- {
- // New last page - use old last page as template
- currentPage = this.pdf.getPage(this.numPages-1);
- newPage = true;
- }
- else
- currentPage = this.pdf.getPage(this.currentPageNo-1);
-
-
- if (currentPage == null) {
- // no page
- this.currentImage = null;
- return;
- }
-
- boolean isRotated = ((currentPage.getRotation()%180) == 90);
- PDRectangle actualPageSize = currentPage.getBBox();
- this.pageWidth = isRotated ? actualPageSize.getHeight() : actualPageSize.getWidth();
- this.pageHeight = isRotated ? actualPageSize.getWidth() : actualPageSize.getHeight();
- this.pageToImageScale = getToolkit().getScreenSize().height / this.pageHeight;
-
- // get the new image
- if (newPage)
- {
- int renderHeight = (int)(0.5 + this.scale(this.pageHeight, U.PAGE_REL, U.IMAGE, Dim.X));
- int renderWidth = (int)(0.5 + this.scale(this.pageWidth, U.PAGE_REL, U.IMAGE, Dim.Y));
- this.currentImage = new BufferedImage(renderWidth, renderHeight, BufferedImage.TYPE_INT_RGB);
- Graphics g = this.currentImage.getGraphics();
- g.setColor(Color.WHITE);
- g.fillRect(0, 0, renderWidth, renderHeight);
- }
- else
- {
- int whichPage = Math.min(this.currentPageNo, this.numPages);
-
- try {
- this.currentImage = renderer.renderImage(whichPage-1, this.pageToImageScale);
- } catch (IOException e) {
- log.error(String.format("Failed to render image for page %d of %d", whichPage, this.numPages), e);
- this.currentImage = null;
- }
- }
-
- if (this.sigPagePos == null)
- {
- setSignaturePosition(
- this.pageWidth * .5,
- this.pageHeight * .75
- );
- }
- }
-
- /**
- * Draw the image.
- */
- @Override
- public void paint(Graphics g) {
- Dimension renderPanelSize = getSize();
- g.setColor(getBackground());
- g.fillRect(0, 0, getWidth(), getHeight());
- if (this.currentImage == null) {
- g.setColor(Color.black);
- g.drawString(Messages.getString("common.working"), getWidth() / 2 - 30, getHeight() / 2);
- } else {
- this.imageToScreenScale = Math.min(
- renderPanelSize.getWidth() / this.currentImage.getWidth(null),
- renderPanelSize.getHeight() / this.currentImage.getHeight(null));
- // draw the image
- int actualRenderWidth = (int)(this.currentImage.getWidth(null) * this.imageToScreenScale);
- int actualRenderHeight = (int)(this.currentImage.getHeight(null) * this.imageToScreenScale);
-
- // draw it centered within the panel
- this.offX = (renderPanelSize.width - actualRenderWidth) / 2;
- this.offY = (renderPanelSize.height - actualRenderHeight) / 2;
-
- // draw document
- g.drawImage(this.currentImage, this.offX, this.offY, actualRenderWidth, actualRenderHeight, null);
-
-
- // draw signature
- int sigX = (int) this.scale(this.sigPagePos.getX(), U.PAGE_ABS, U.SCREEN_ABS, Dim.X);
- int sigY = (int) this.scale(this.sigPagePos.getY(), U.PAGE_ABS, U.SCREEN_ABS, Dim.Y);
- if (this.sigPlaceholder == null) {
- g.setColor(Color.red);
- g.drawRect(sigX, sigY, 100, 40);
- }
- else {
- int sigScreenWidth = (int)this.scale(this.sigPageWidth, U.PAGE_REL, U.SCREEN_REL, Dim.X);
- int sigScreenHeight = (int)this.scale(this.sigPageHeight, U.PAGE_REL, U.SCREEN_REL, Dim.Y);
- g.drawImage(this.sigPlaceholder, sigX, sigY, sigScreenWidth, sigScreenHeight, null);
- g.setColor(this.sigPlaceholderBorderColor);
- g.drawRect(sigX, sigY, sigScreenWidth-1, sigScreenHeight-1);
- }
- }
- }
-
- /**
- * Handles notification of the fact that some part of the image changed.
- * Repaints that portion.
- *
- * @return true if more updates are desired.
- */
- @Override
- public boolean imageUpdate(Image img, int infoflags, int x, int y,
- int width, int height) {
- if ((infoflags & (SOMEBITS | ALLBITS)) != 0) {
- repaint(x + this.offX, y + this.offY, width, height);
- }
- return ((infoflags & (ALLBITS | ERROR | ABORT)) == 0);
- }
-
- private MouseAdapter mouseListener = new MouseAdapter() {
-
- private boolean doDrag = false;
- private int dragXOffset = 0;
- private int dragYOffset = 0;
-
- private void updateSigPosDrag(MouseEvent evt) {
- SignaturePanel.this.setSignaturePosition(
- SignaturePanel.this.scale(evt.getX() - this.dragXOffset, U.SCREEN_ABS, U.PAGE_ABS, Dim.X),
- SignaturePanel.this.scale(evt.getY() - this.dragYOffset, U.SCREEN_ABS, U.PAGE_ABS, Dim.Y)
- );
- }
-
- /** Handles a mouseMoved event */
- @Override
- public void mouseMoved(MouseEvent evt) {
- try {
- boolean onSig = isOnSignature(evt);
- setCursor(onSig ? Cursors.HAND : Cursors.DEFAULT);
- } catch (NullPointerException e) {
- // do nothing
- }
- }
-
- /** Handles a mousePressed event */
- @Override
- public void mousePressed(MouseEvent evt) {
- if (evt.getButton() == MouseEvent.BUTTON1)
- {
- this.doDrag = true;
- if (isOnSignature(evt)) {
- /* offsets (in screen units) from top-left corner of signature to cursor on drag start */
- this.dragXOffset = (int)(evt.getX() - SignaturePanel.this.scale(SignaturePanel.this.sigPagePos.getX(), U.PAGE_ABS, U.SCREEN_ABS, Dim.X));
- this.dragYOffset = (int)(evt.getY() - SignaturePanel.this.scale(SignaturePanel.this.sigPagePos.getY(), U.PAGE_ABS, U.SCREEN_ABS, Dim.Y));
- } else {
- this.dragXOffset = 0;
- this.dragYOffset = 0;
- }
- updateSigPosDrag(evt);
- setCursor(Cursors.MOVE);
- }
- }
-
- /** Handles a mouseReleased event */
- @Override
- public void mouseReleased(MouseEvent evt) {
- this.doDrag = false;
- boolean onSig = isOnSignature(evt);
- setCursor(onSig ? Cursors.HAND : Cursors.DEFAULT);
- }
-
- /**
- * Handles a mouseDragged event.
- */
- @Override
- public void mouseDragged(MouseEvent evt) {
- if (this.doDrag)
- updateSigPosDrag(evt);
- }
- };
-
- /**
- * Sets the mouse cursor
- * @param cursor cursor to set
- */
- void setCursor(Cursors cursor)
- {
- if (this.currentCursor == cursor)
- return;
- this.currentCursor = cursor;
- Cursor cur = null;
- switch (cursor) {
- case DEFAULT:
- cur = this.defaultCursor;
- break;
- case HAND:
- cur = this.handCursor;
- break;
- case MOVE:
- cur = this.moveCursor;
- break;
- }
- this.getParent().setCursor(cur);
- }
-
- /**
- * Check whether given point is on signature placeholder
- * @param x x coordinate (screen)
- * @param y y coordinate (screen)
- * @return true if given point is on signature placeholder
- */
- private boolean isOnSignature(MouseEvent evt)
- {
- if (this.sigPagePos == null)
- return false;
-
- Rectangle2D sig = new Rectangle2D.Double(
- this.scale(this.sigPagePos.getX(), U.PAGE_ABS, U.SCREEN_ABS, Dim.X),
- this.scale(this.sigPagePos.getY(), U.PAGE_ABS, U.SCREEN_ABS, Dim.Y),
- this.scale(this.sigPageWidth, U.PAGE_REL, U.SCREEN_REL, Dim.X),
- this.scale(this.sigPageHeight, U.PAGE_REL, U.SCREEN_REL, Dim.Y)
- );
- return sig.contains(evt.getX(), evt.getY());
- }
-
- /**
- * Clamp x to be within [min-max]
- * @param x int to clamp
- * @param min minimum value
- * @param max maximum value
- * @return clamped x
- */
- private static double clamp(double x, double min, double max)
- {
- if (x < min)
- x = min;
- else if (x > max)
- x = max;
- return x;
- }
-}
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