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author | Andreas Abraham <andreas.abraham@egiz.gv.at> | 2018-07-03 10:04:52 +0200 |
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committer | Andreas Abraham <andreas.abraham@egiz.gv.at> | 2018-07-03 10:04:52 +0200 |
commit | 22043a6b8caf9b0a60c58d92f27bd3e0b12eeb7d (patch) | |
tree | fbb2c6439513a3befd01834f0aca3824e8d260eb /pdf-over-gui/src/main/java/at/asit/pdfover/gui | |
parent | 51e84009d89004f0b06118a10368e2ad2aa3508b (diff) | |
download | pdf-over-22043a6b8caf9b0a60c58d92f27bd3e0b12eeb7d.tar.gz pdf-over-22043a6b8caf9b0a60c58d92f27bd3e0b12eeb7d.tar.bz2 pdf-over-22043a6b8caf9b0a60c58d92f27bd3e0b12eeb7d.zip |
decorate onSignature method
Diffstat (limited to 'pdf-over-gui/src/main/java/at/asit/pdfover/gui')
-rw-r--r-- | pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/SignaturePanel.java | 1098 |
1 files changed, 549 insertions, 549 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 index 193f5974..575c8f86 100644 --- 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 @@ -1,549 +1,549 @@ -/* - * 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.AffineTransform; -import java.awt.geom.NoninvertibleTransformException; -import java.awt.geom.Point2D; -import java.awt.geom.Rectangle2D; -import java.awt.image.BufferedImage; - -import javax.swing.JPanel; - -import org.slf4j.Logger; -import org.slf4j.LoggerFactory; - -import at.asit.pdfover.gui.Constants; -import at.asit.pdfover.gui.utils.Messages; - -import com.sun.pdfview.PDFFile; -import com.sun.pdfview.PDFPage; - -/** - * - */ -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 PDFFile pdf = null; - /** The image of the rendered PDF page being displayed */ - Image currentImage = null; - /** The current PDFPage that was rendered into currentImage */ - private PDFPage currentPage = null; - /** The current transform from screen to page space */ - AffineTransform currentXform = null; - /** The horizontal offset of the image from the left edge of the panel */ - int offX = 0; - /** The vertical offset of the image from the top of the panel */ - int offY = 0; - /** The size of the image */ - private Dimension prevSize = null; - /** The position of the signature, in page space */ - Point2D sigPagePos = null; - /** The position of the signature, in screen space */ - Point2D sigScreenPos = null; - /** The signature placeholder image */ - private Image sigPlaceholder = null; - /** Current scaled signature placeholder image */ - BufferedImage sigPlaceholderScaled = null; - /** Transparency of the signature placeholder (0-255) */ - private int sigPlaceholderTransparency = Constants.DEFAULT_SIGNATURE_PLACEHOLDER_TRANSPARENCY; - /** Previous Transparency of the signature placeholder */ - private int prevSigPlaceholderTransparency = 0; - /** Width of the signature placeholder in page space */ - private int sigPageWidth = 0; - /** Height of the signature placeholder in page space */ - private int sigPageHeight = 0; - /** Width of the signature placeholder in screen space */ - int sigScreenWidth = 0; - /** Height of the signature placeholder in screen space */ - int sigScreenHeight = 0; - /** Previous Width of the signature placeholder in screen space */ - int prevSigScreenWidth = 0; - /** Previous Height of the signature placeholder in screen space */ - 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; - /** Cursor types */ - static enum Cursors {DEFAULT, HAND, MOVE}; - /** Default arrow cursor */ - final Cursor defaultCursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR); - /** Hand cursor */ - final Cursor handCursor = Cursor.getPredefinedCursor(Cursor.HAND_CURSOR); - /** Move cursor */ - final Cursor moveCursor = Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR); - /** Current cursor */ - Cursors currentCursor = Cursors.DEFAULT; - - /** - * Create a new PagePanel. - * @param pdf the PDFFile to display - */ - public SignaturePanel(PDFFile pdf) { - super(new BorderLayout()); - setDocument(pdf); - setPreferredSize(new Dimension(Constants.DEFAULT_MAINWINDOW_WIDTH, Constants.DEFAULT_MAINWINDOW_HEIGHT - Constants.MAINBAR_HEIGHT)); - 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(PDFFile pdf) { - this.pdf = pdf; - this.sigPagePos = null; - this.numPages = pdf.getNumPages(); - showPage(this.numPages); - } - - /** - * 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 - * @param transparency transparency of the signature placeholder (0 - 255) - */ - public void setSignaturePlaceholder(Image placeholder, int width, int height, int transparency) { - this.sigPlaceholder = placeholder; - this.sigPageWidth = width; - this.sigPageHeight = height; - this.sigPlaceholderTransparency = transparency; - } - - /** - * 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) { - 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 - */ - public void translateSignaturePosition(int sigXOffset, int sigYOffset) { - updateSigPos((int) this.sigScreenPos.getX() + sigXOffset, (int) this.sigScreenPos.getY() + sigYOffset); - } - - /** - * Set the signature placeholder position - * Call showPage afterwards to update actual position - * @param x the horizontal signature position - * @param y the vertical signature position - */ - public void setSignaturePosition(float x, float y) - { - this.sigPagePos = new Point2D.Double(x, y); - } - - /** - * Get the current horizontal position of the signature - * @return signature x coordinate - */ - public float getSignaturePositionX() { - if (this.sigPagePos == null) - return 0; - return Math.max((float) this.sigPagePos.getX(), 0); - } - - /** - * Get the current vertical position of the signature - * @return signature y coordinate - */ - public float getSignaturePositionY() { - if (this.sigPagePos == null) - return 0; - return Math.max((float) this.sigPagePos.getY(), 0); - } - - /** - * Stop the generation of any previous page, and draw the new one. - * - * @param page the PDFPage to draw. - */ - private synchronized void showPage(PDFPage page) { - // stop drawing the previous page - if (this.currentPage != null && this.prevSize != null) { - this.currentPage.stop(this.prevSize.width, this.prevSize.height, null); - } - - boolean newPage = false; - // set up the new 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 - this.currentImage = null; - this.currentXform = null; - repaint(); - } else { - // start drawing - Dimension sz = getSize(); - if (sz.width + sz.height == 0) { - // no image to draw. - return; - } - - Dimension pageSize = this.currentPage.getUnstretchedSize(sz.width, sz.height, - null); - - // get the new image - 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 = new AffineTransform(1, 0, 0, -1, 0, pageSize.height); - Rectangle2D clip = this.currentPage.getBBox(); - double scaleX = pageSize.width / clip.getWidth(); - double scaleY = pageSize.height / clip.getHeight(); - this.currentXform.scale(scaleX, scaleY); - this.currentXform.translate(-clip.getMinX(), -clip.getMinY()); - - if (this.sigPagePos != null) - this.sigScreenPos = this.currentXform.transform(this.sigPagePos, this.sigScreenPos); - this.sigScreenWidth = (int) Math.round(this.sigPageWidth * this.currentXform.getScaleX()); - this.sigScreenHeight = (int) Math.round(this.sigPageHeight * this.currentXform.getScaleX()); - - // invert the transform (screen to page space) - try { - this.currentXform = this.currentXform.createInverse(); - } catch (NoninvertibleTransformException nte) { - log.error("Error inverting page transform!", nte); //$NON-NLS-1$ - } - - if (this.sigPagePos == null) - { - this.sigScreenPos = new Point2D.Double( - clamp((int) (pageSize.getWidth() / 2), 0, this.currentImage.getWidth(null) - this.sigScreenWidth), - clamp((int) ((pageSize.getHeight() / 4) * 3), 0, this.currentImage.getHeight(null) - this.sigScreenHeight)); - this.sigPagePos = this.currentXform.transform(this.sigScreenPos, this.sigPagePos); - } - else - updateSigPos((int) this.sigScreenPos.getX(), (int) this.sigScreenPos.getY()); - - this.prevSize = pageSize; - - repaint(); - } - } - - /** - * Draw the image. - */ - @Override - public void paint(Graphics g) { - Dimension sz = getSize(); - g.setColor(getBackground()); - g.fillRect(0, 0, getWidth(), getHeight()); - if (this.currentImage == null) { - g.setColor(Color.black); - g.drawString(Messages.getString("error.SignaturePanel.NoPage"), getWidth() / 2 - 30, //$NON-NLS-1$ - getHeight() / 2); - if (this.currentPage != null) { - showPage(this.currentPage); - } - } else { - // draw the image - int imwid = this.currentImage.getWidth(null); - int imhgt = this.currentImage.getHeight(null); - - // draw it centered within the panel - this.offX = (sz.width - imwid) / 2; - this.offY = (sz.height - imhgt) / 2; - - if ((imwid == sz.width && imhgt <= sz.height) - || (imhgt == sz.height && imwid <= sz.width)) { - - // draw document - g.drawImage(this.currentImage, this.offX, this.offY, this); - - // draw signature - int sigX = (int) (this.offX + this.sigScreenPos.getX()); - int sigY = (int) (this.offY + this.sigScreenPos.getY()); - if (this.sigPlaceholder == null) { - g.setColor(Color.red); - g.drawRect(sigX, sigY, 100, 40); - } - else { - if ( - ((this.sigScreenWidth != this.prevSigScreenWidth) || - (this.sigScreenHeight != this.prevSigScreenHeight) || - (this.sigPlaceholderTransparency != this.prevSigPlaceholderTransparency)) && - ((this.sigScreenWidth != 0) && (this.sigScreenHeight != 0))) - { - // redraw scaled transparent placeholder - this.prevSigScreenWidth = this.sigScreenWidth; - this.prevSigScreenHeight = this.sigScreenHeight; - this.prevSigPlaceholderTransparency = this.sigPlaceholderTransparency; - Image placeholder = this.sigPlaceholder.getScaledInstance( - this.sigScreenWidth, this.sigScreenHeight, Image.SCALE_SMOOTH); - - //Make placeholder transparent - this.sigPlaceholderScaled = new BufferedImage(this.sigScreenWidth, this.sigScreenHeight, BufferedImage.TYPE_INT_ARGB); - Graphics g_phs = this.sigPlaceholderScaled.getGraphics(); - g_phs.drawImage(placeholder, 0, 0, null); - - // Draw grey "Signature" overlay - String overlay = Messages.getString("positioning.signature"); //$NON-NLS-1$ - // Voodoo to get overlay font scale - float scale = (((float) this.sigScreenWidth) / this.sigPlaceholder.getWidth(null)) * 150; - g_phs.setFont(getFont().deriveFont(scale)); - g_phs.setColor(this.sigPlaceholderBorderColor); - Rectangle2D overlay_size = g_phs.getFontMetrics().getStringBounds(overlay, g_phs); - int width = (int) overlay_size.getWidth(); - int height = (int) overlay_size.getHeight(); - int x = this.sigScreenWidth / 2 - width / 2; - int y = this.sigScreenHeight / 2 - height / 2 + g_phs.getFontMetrics().getAscent(); - g_phs.drawString(overlay, x, y); - - g_phs.dispose(); - int[] phpixels = new int[this.sigScreenWidth * this.sigScreenHeight]; - phpixels = this.sigPlaceholderScaled.getRGB(0, 0, this.sigScreenWidth, this.sigScreenHeight, phpixels, 0, this.sigScreenWidth); - for (int i = 0; i < phpixels.length; ++i) { - Color c = new Color(phpixels[i]); - c = new Color(c.getRed(), c.getGreen(), c.getBlue(), this.sigPlaceholderTransparency); - phpixels[i] = c.getRGB(); - } - this.sigPlaceholderScaled.setRGB(0, 0, this.sigScreenWidth, this.sigScreenHeight, phpixels, 0, this.sigScreenWidth); - } - g.drawImage(this.sigPlaceholderScaled, sigX, sigY, null); - g.setColor(this.sigPlaceholderBorderColor); - g.drawRect(sigX, sigY, this.sigScreenWidth-1, this.sigScreenHeight-1); - } - - } else { - // the image is bogus. try again, or give up. - if (this.currentPage != null) { - showPage(this.currentPage); - } - g.setColor(Color.black); - g.drawString(Messages.getString("error.SignaturePanel.NoRender"), getWidth() / 2 - 30, //$NON-NLS-1$ - getHeight() / 2); - } - } - } - - /** - * 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 updateSigPos(int sigx, int sigy) { - SignaturePanel.this.updateSigPos( - sigx - SignaturePanel.this.offX, - sigy - SignaturePanel.this.offY); - } - - /** Handles a mouseMoved event */ - @Override - public void mouseMoved(MouseEvent evt) { -// try { - boolean onSig = isOnSignature(evt.getX(), evt.getY()); - setCursor(onSig ? Cursors.HAND : Cursors.DEFAULT); -// }catch (NullPointerException e) { -// log.debug("Error " +e.getMessage()); //$NON-NLS-1$ -// } - } - - /** Handles a mousePressed event */ - @Override - public void mousePressed(MouseEvent evt) { - if (evt.getButton() == MouseEvent.BUTTON1) - { - this.doDrag = true; - if (isOnSignature(evt.getX(), evt.getY())) { - this.dragXOffset = (int) - (SignaturePanel.this.sigScreenPos.getX() - - (evt.getX() - SignaturePanel.this.offX)); - this.dragYOffset = (int) - (SignaturePanel.this.sigScreenPos.getY() - - (evt.getY() - SignaturePanel.this.offY)); - } - else { - this.dragXOffset = 0; - this.dragYOffset = 0; - } - updateSigPos(evt.getX() + this.dragXOffset, evt.getY() + this.dragYOffset); - setCursor(Cursors.MOVE); - } - } - - /** Handles a mouseReleased event */ - @Override - public void mouseReleased(MouseEvent evt) { - this.doDrag = false; - boolean onSig = isOnSignature(evt.getX(), evt.getY()); - setCursor(onSig ? Cursors.HAND : Cursors.DEFAULT); - } - - /** - * Handles a mouseDragged event. - */ - @Override - public void mouseDragged(MouseEvent evt) { - if (this.doDrag) - updateSigPos(evt.getX() + this.dragXOffset, evt.getY() + this.dragYOffset); - } - }; - - /** - * 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 - * @param y y coordinate - * @return true if given point is on signature placeholder - */ - boolean isOnSignature(int x, int y) - { - Rectangle2D sig = new Rectangle2D.Double( - this.sigScreenPos.getX() + this.offX, - this.sigScreenPos.getY() + this.offY, - this.sigScreenWidth, - this.sigScreenHeight); - Point2D pos = new Point2D.Double(x, y); - return (sig.contains(pos)); - } - - /** - * Update the signature placeholder position - * @param sigx X position on the document (screen coordinates) - * @param sigy Y position on the document (screen coordinates) - */ - void updateSigPos(int sigx, int sigy) { - if (this.currentImage == null) - return; - sigx = clamp(sigx, 0, this.currentImage.getWidth(null) - this.sigScreenWidth); - sigy = clamp(sigy, 0, this.currentImage.getHeight(null) - this.sigScreenHeight); - this.sigScreenPos = new Point2D.Double(sigx, sigy); - this.sigPagePos = this.currentXform.transform(this.sigScreenPos, this.sigPagePos); - repaint(); - } - - /** - * Clamp x to be within [min-max] - * @param x int to clamp - * @param min minimum value - * @param max maximum value - * @return clamped x - */ - static int clamp(int x, int min, int max) - { - if (x < min) - x = min; - else if (x > max) - x = max; - return x; - } -} +/*
+ * 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.AffineTransform;
+import java.awt.geom.NoninvertibleTransformException;
+import java.awt.geom.Point2D;
+import java.awt.geom.Rectangle2D;
+import java.awt.image.BufferedImage;
+
+import javax.swing.JPanel;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.asit.pdfover.gui.Constants;
+import at.asit.pdfover.gui.utils.Messages;
+
+import com.sun.pdfview.PDFFile;
+import com.sun.pdfview.PDFPage;
+
+/**
+ *
+ */
+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 PDFFile pdf = null;
+ /** The image of the rendered PDF page being displayed */
+ Image currentImage = null;
+ /** The current PDFPage that was rendered into currentImage */
+ private PDFPage currentPage = null;
+ /** The current transform from screen to page space */
+ AffineTransform currentXform = null;
+ /** The horizontal offset of the image from the left edge of the panel */
+ int offX = 0;
+ /** The vertical offset of the image from the top of the panel */
+ int offY = 0;
+ /** The size of the image */
+ private Dimension prevSize = null;
+ /** The position of the signature, in page space */
+ Point2D sigPagePos = null;
+ /** The position of the signature, in screen space */
+ Point2D sigScreenPos = null;
+ /** The signature placeholder image */
+ private Image sigPlaceholder = null;
+ /** Current scaled signature placeholder image */
+ BufferedImage sigPlaceholderScaled = null;
+ /** Transparency of the signature placeholder (0-255) */
+ private int sigPlaceholderTransparency = Constants.DEFAULT_SIGNATURE_PLACEHOLDER_TRANSPARENCY;
+ /** Previous Transparency of the signature placeholder */
+ private int prevSigPlaceholderTransparency = 0;
+ /** Width of the signature placeholder in page space */
+ private int sigPageWidth = 0;
+ /** Height of the signature placeholder in page space */
+ private int sigPageHeight = 0;
+ /** Width of the signature placeholder in screen space */
+ int sigScreenWidth = 0;
+ /** Height of the signature placeholder in screen space */
+ int sigScreenHeight = 0;
+ /** Previous Width of the signature placeholder in screen space */
+ int prevSigScreenWidth = 0;
+ /** Previous Height of the signature placeholder in screen space */
+ 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;
+ /** Cursor types */
+ static enum Cursors {DEFAULT, HAND, MOVE};
+ /** Default arrow cursor */
+ final Cursor defaultCursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
+ /** Hand cursor */
+ final Cursor handCursor = Cursor.getPredefinedCursor(Cursor.HAND_CURSOR);
+ /** Move cursor */
+ final Cursor moveCursor = Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR);
+ /** Current cursor */
+ Cursors currentCursor = Cursors.DEFAULT;
+
+ /**
+ * Create a new PagePanel.
+ * @param pdf the PDFFile to display
+ */
+ public SignaturePanel(PDFFile pdf) {
+ super(new BorderLayout());
+ setDocument(pdf);
+ setPreferredSize(new Dimension(Constants.DEFAULT_MAINWINDOW_WIDTH, Constants.DEFAULT_MAINWINDOW_HEIGHT - Constants.MAINBAR_HEIGHT));
+ 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(PDFFile pdf) {
+ this.pdf = pdf;
+ this.sigPagePos = null;
+ this.numPages = pdf.getNumPages();
+ showPage(this.numPages);
+ }
+
+ /**
+ * 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
+ * @param transparency transparency of the signature placeholder (0 - 255)
+ */
+ public void setSignaturePlaceholder(Image placeholder, int width, int height, int transparency) {
+ this.sigPlaceholder = placeholder;
+ this.sigPageWidth = width;
+ this.sigPageHeight = height;
+ this.sigPlaceholderTransparency = transparency;
+ }
+
+ /**
+ * 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) {
+ 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
+ */
+ public void translateSignaturePosition(int sigXOffset, int sigYOffset) {
+ updateSigPos((int) this.sigScreenPos.getX() + sigXOffset, (int) this.sigScreenPos.getY() + sigYOffset);
+ }
+
+ /**
+ * Set the signature placeholder position
+ * Call showPage afterwards to update actual position
+ * @param x the horizontal signature position
+ * @param y the vertical signature position
+ */
+ public void setSignaturePosition(float x, float y)
+ {
+ this.sigPagePos = new Point2D.Double(x, y);
+ }
+
+ /**
+ * Get the current horizontal position of the signature
+ * @return signature x coordinate
+ */
+ public float getSignaturePositionX() {
+ if (this.sigPagePos == null)
+ return 0;
+ return Math.max((float) this.sigPagePos.getX(), 0);
+ }
+
+ /**
+ * Get the current vertical position of the signature
+ * @return signature y coordinate
+ */
+ public float getSignaturePositionY() {
+ if (this.sigPagePos == null)
+ return 0;
+ return Math.max((float) this.sigPagePos.getY(), 0);
+ }
+
+ /**
+ * Stop the generation of any previous page, and draw the new one.
+ *
+ * @param page the PDFPage to draw.
+ */
+ private synchronized void showPage(PDFPage page) {
+ // stop drawing the previous page
+ if (this.currentPage != null && this.prevSize != null) {
+ this.currentPage.stop(this.prevSize.width, this.prevSize.height, null);
+ }
+
+ boolean newPage = false;
+ // set up the new 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
+ this.currentImage = null;
+ this.currentXform = null;
+ repaint();
+ } else {
+ // start drawing
+ Dimension sz = getSize();
+ if (sz.width + sz.height == 0) {
+ // no image to draw.
+ return;
+ }
+
+ Dimension pageSize = this.currentPage.getUnstretchedSize(sz.width, sz.height,
+ null);
+
+ // get the new image
+ 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 = new AffineTransform(1, 0, 0, -1, 0, pageSize.height);
+ Rectangle2D clip = this.currentPage.getBBox();
+ double scaleX = pageSize.width / clip.getWidth();
+ double scaleY = pageSize.height / clip.getHeight();
+ this.currentXform.scale(scaleX, scaleY);
+ this.currentXform.translate(-clip.getMinX(), -clip.getMinY());
+
+ if (this.sigPagePos != null)
+ this.sigScreenPos = this.currentXform.transform(this.sigPagePos, this.sigScreenPos);
+ this.sigScreenWidth = (int) Math.round(this.sigPageWidth * this.currentXform.getScaleX());
+ this.sigScreenHeight = (int) Math.round(this.sigPageHeight * this.currentXform.getScaleX());
+
+ // invert the transform (screen to page space)
+ try {
+ this.currentXform = this.currentXform.createInverse();
+ } catch (NoninvertibleTransformException nte) {
+ log.error("Error inverting page transform!", nte); //$NON-NLS-1$
+ }
+
+ if (this.sigPagePos == null)
+ {
+ this.sigScreenPos = new Point2D.Double(
+ clamp((int) (pageSize.getWidth() / 2), 0, this.currentImage.getWidth(null) - this.sigScreenWidth),
+ clamp((int) ((pageSize.getHeight() / 4) * 3), 0, this.currentImage.getHeight(null) - this.sigScreenHeight));
+ this.sigPagePos = this.currentXform.transform(this.sigScreenPos, this.sigPagePos);
+ }
+ else
+ updateSigPos((int) this.sigScreenPos.getX(), (int) this.sigScreenPos.getY());
+
+ this.prevSize = pageSize;
+
+ repaint();
+ }
+ }
+
+ /**
+ * Draw the image.
+ */
+ @Override
+ public void paint(Graphics g) {
+ Dimension sz = getSize();
+ g.setColor(getBackground());
+ g.fillRect(0, 0, getWidth(), getHeight());
+ if (this.currentImage == null) {
+ g.setColor(Color.black);
+ g.drawString(Messages.getString("error.SignaturePanel.NoPage"), getWidth() / 2 - 30, //$NON-NLS-1$
+ getHeight() / 2);
+ if (this.currentPage != null) {
+ showPage(this.currentPage);
+ }
+ } else {
+ // draw the image
+ int imwid = this.currentImage.getWidth(null);
+ int imhgt = this.currentImage.getHeight(null);
+
+ // draw it centered within the panel
+ this.offX = (sz.width - imwid) / 2;
+ this.offY = (sz.height - imhgt) / 2;
+
+ if ((imwid == sz.width && imhgt <= sz.height)
+ || (imhgt == sz.height && imwid <= sz.width)) {
+
+ // draw document
+ g.drawImage(this.currentImage, this.offX, this.offY, this);
+
+ // draw signature
+ int sigX = (int) (this.offX + this.sigScreenPos.getX());
+ int sigY = (int) (this.offY + this.sigScreenPos.getY());
+ if (this.sigPlaceholder == null) {
+ g.setColor(Color.red);
+ g.drawRect(sigX, sigY, 100, 40);
+ }
+ else {
+ if (
+ ((this.sigScreenWidth != this.prevSigScreenWidth) ||
+ (this.sigScreenHeight != this.prevSigScreenHeight) ||
+ (this.sigPlaceholderTransparency != this.prevSigPlaceholderTransparency)) &&
+ ((this.sigScreenWidth != 0) && (this.sigScreenHeight != 0)))
+ {
+ // redraw scaled transparent placeholder
+ this.prevSigScreenWidth = this.sigScreenWidth;
+ this.prevSigScreenHeight = this.sigScreenHeight;
+ this.prevSigPlaceholderTransparency = this.sigPlaceholderTransparency;
+ Image placeholder = this.sigPlaceholder.getScaledInstance(
+ this.sigScreenWidth, this.sigScreenHeight, Image.SCALE_SMOOTH);
+
+ //Make placeholder transparent
+ this.sigPlaceholderScaled = new BufferedImage(this.sigScreenWidth, this.sigScreenHeight, BufferedImage.TYPE_INT_ARGB);
+ Graphics g_phs = this.sigPlaceholderScaled.getGraphics();
+ g_phs.drawImage(placeholder, 0, 0, null);
+
+ // Draw grey "Signature" overlay
+ String overlay = Messages.getString("positioning.signature"); //$NON-NLS-1$
+ // Voodoo to get overlay font scale
+ float scale = (((float) this.sigScreenWidth) / this.sigPlaceholder.getWidth(null)) * 150;
+ g_phs.setFont(getFont().deriveFont(scale));
+ g_phs.setColor(this.sigPlaceholderBorderColor);
+ Rectangle2D overlay_size = g_phs.getFontMetrics().getStringBounds(overlay, g_phs);
+ int width = (int) overlay_size.getWidth();
+ int height = (int) overlay_size.getHeight();
+ int x = this.sigScreenWidth / 2 - width / 2;
+ int y = this.sigScreenHeight / 2 - height / 2 + g_phs.getFontMetrics().getAscent();
+ g_phs.drawString(overlay, x, y);
+
+ g_phs.dispose();
+ int[] phpixels = new int[this.sigScreenWidth * this.sigScreenHeight];
+ phpixels = this.sigPlaceholderScaled.getRGB(0, 0, this.sigScreenWidth, this.sigScreenHeight, phpixels, 0, this.sigScreenWidth);
+ for (int i = 0; i < phpixels.length; ++i) {
+ Color c = new Color(phpixels[i]);
+ c = new Color(c.getRed(), c.getGreen(), c.getBlue(), this.sigPlaceholderTransparency);
+ phpixels[i] = c.getRGB();
+ }
+ this.sigPlaceholderScaled.setRGB(0, 0, this.sigScreenWidth, this.sigScreenHeight, phpixels, 0, this.sigScreenWidth);
+ }
+ g.drawImage(this.sigPlaceholderScaled, sigX, sigY, null);
+ g.setColor(this.sigPlaceholderBorderColor);
+ g.drawRect(sigX, sigY, this.sigScreenWidth-1, this.sigScreenHeight-1);
+ }
+
+ } else {
+ // the image is bogus. try again, or give up.
+ if (this.currentPage != null) {
+ showPage(this.currentPage);
+ }
+ g.setColor(Color.black);
+ g.drawString(Messages.getString("error.SignaturePanel.NoRender"), getWidth() / 2 - 30, //$NON-NLS-1$
+ getHeight() / 2);
+ }
+ }
+ }
+
+ /**
+ * 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 updateSigPos(int sigx, int sigy) {
+ SignaturePanel.this.updateSigPos(
+ sigx - SignaturePanel.this.offX,
+ sigy - SignaturePanel.this.offY);
+ }
+
+ /** Handles a mouseMoved event */
+ @Override
+ public void mouseMoved(MouseEvent evt) {
+ try {
+ boolean onSig = isOnSignature(evt.getX(), evt.getY());
+ 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.getX(), evt.getY())) {
+ this.dragXOffset = (int)
+ (SignaturePanel.this.sigScreenPos.getX() -
+ (evt.getX() - SignaturePanel.this.offX));
+ this.dragYOffset = (int)
+ (SignaturePanel.this.sigScreenPos.getY() -
+ (evt.getY() - SignaturePanel.this.offY));
+ }
+ else {
+ this.dragXOffset = 0;
+ this.dragYOffset = 0;
+ }
+ updateSigPos(evt.getX() + this.dragXOffset, evt.getY() + this.dragYOffset);
+ setCursor(Cursors.MOVE);
+ }
+ }
+
+ /** Handles a mouseReleased event */
+ @Override
+ public void mouseReleased(MouseEvent evt) {
+ this.doDrag = false;
+ boolean onSig = isOnSignature(evt.getX(), evt.getY());
+ setCursor(onSig ? Cursors.HAND : Cursors.DEFAULT);
+ }
+
+ /**
+ * Handles a mouseDragged event.
+ */
+ @Override
+ public void mouseDragged(MouseEvent evt) {
+ if (this.doDrag)
+ updateSigPos(evt.getX() + this.dragXOffset, evt.getY() + this.dragYOffset);
+ }
+ };
+
+ /**
+ * 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
+ * @param y y coordinate
+ * @return true if given point is on signature placeholder
+ */
+ boolean isOnSignature(int x, int y)
+ {
+ Rectangle2D sig = new Rectangle2D.Double(
+ this.sigScreenPos.getX() + this.offX,
+ this.sigScreenPos.getY() + this.offY,
+ this.sigScreenWidth,
+ this.sigScreenHeight);
+ Point2D pos = new Point2D.Double(x, y);
+ return (sig.contains(pos));
+ }
+
+ /**
+ * Update the signature placeholder position
+ * @param sigx X position on the document (screen coordinates)
+ * @param sigy Y position on the document (screen coordinates)
+ */
+ void updateSigPos(int sigx, int sigy) {
+ if (this.currentImage == null)
+ return;
+ sigx = clamp(sigx, 0, this.currentImage.getWidth(null) - this.sigScreenWidth);
+ sigy = clamp(sigy, 0, this.currentImage.getHeight(null) - this.sigScreenHeight);
+ this.sigScreenPos = new Point2D.Double(sigx, sigy);
+ this.sigPagePos = this.currentXform.transform(this.sigScreenPos, this.sigPagePos);
+ repaint();
+ }
+
+ /**
+ * Clamp x to be within [min-max]
+ * @param x int to clamp
+ * @param min minimum value
+ * @param max maximum value
+ * @return clamped x
+ */
+ static int clamp(int x, int min, int max)
+ {
+ if (x < min)
+ x = min;
+ else if (x > max)
+ x = max;
+ return x;
+ }
+}
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