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Diffstat (limited to 'src/main/java/org/pdfbox/pdfviewer/PageDrawer.java')
| -rw-r--r-- | src/main/java/org/pdfbox/pdfviewer/PageDrawer.java | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/src/main/java/org/pdfbox/pdfviewer/PageDrawer.java b/src/main/java/org/pdfbox/pdfviewer/PageDrawer.java new file mode 100644 index 0000000..7c39f7b --- /dev/null +++ b/src/main/java/org/pdfbox/pdfviewer/PageDrawer.java @@ -0,0 +1,268 @@ +/**
+ * Copyright (c) 2003-2005, www.pdfbox.org
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of pdfbox; nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://www.pdfbox.org
+ *
+ */
+package org.pdfbox.pdfviewer;
+
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.RenderingHints;
+
+import java.awt.geom.GeneralPath;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.pdfbox.pdmodel.PDPage;
+
+import org.pdfbox.pdmodel.font.PDFont;
+
+import org.pdfbox.util.PDFStreamEngine;
+import org.pdfbox.util.ResourceLoader;
+import org.pdfbox.util.TextPosition;
+
+/**
+ * This will paint a page in a PDF document to a graphics context.
+ *
+ * @author Ben Litchfield (ben@benlitchfield.com)
+ * @version $Revision: 1.17 $
+ */
+public class PageDrawer extends PDFStreamEngine
+{
+
+ private Graphics2D graphics;
+ private Dimension pageSize;
+ private PDPage page;
+
+ private List lineSubPaths = new ArrayList();
+ private GeneralPath linePath = new GeneralPath();
+ private Color strokingColor = Color.BLACK;
+ private Color nonStrokingColor = Color.BLACK;
+
+ /**
+ * Default constructor, loads properties from file.
+ *
+ * @throws IOException If there is an error loading properties from the file.
+ */
+ public PageDrawer() throws IOException
+ {
+ super( ResourceLoader.loadProperties( "Resources/PageDrawer.properties" ) );
+ }
+
+ /**
+ * This will draw the page to the requested context.
+ *
+ * @param g The graphics context to draw onto.
+ * @param p The page to draw.
+ * @param pageDimension The size of the page to draw.
+ *
+ * @throws IOException If there is an IO error while drawing the page.
+ */
+ public void drawPage( Graphics g, PDPage p, Dimension pageDimension ) throws IOException
+ {
+ graphics = (Graphics2D)g;
+ page = p;
+ pageSize = pageDimension;
+
+ graphics.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON );
+ processStream( page, page.findResources(), page.getContents().getStream() );
+ // Transformations should be done in order
+ // 1 - Translate
+ // 2 - Rotate
+ // 3 - Scale
+ // Refer to PDFReference p176 (or 188 in xpdf)
+ //AffineTransform transform = graphics.getTransform();
+ //transform.setToTranslate( 0, page.findMediaBox().getHeight()/2 );
+ //transform.setToRotation((double)p.getRotation());
+ //transform.setTransform( 1, 0, 0, 1, 0, 0 );
+ //transform.setToScale( 1, 1 );
+
+ //AffineTransform rotation = graphics.getTransform();
+ //rotation.rotate( (page.findRotation() * Math.PI) / 180d );
+ //graphics.setTransform( rotation );
+ }
+
+ /**
+ * You should override this method if you want to perform an action when a
+ * string is being shown.
+ *
+ * @param text The string to display.
+ */
+ protected void showCharacter( TextPosition text )
+ {
+ //should use colorspaces for the font color but for now assume that
+ //the font color is black
+ try
+ {
+ graphics.setColor( Color.black );
+ PDFont font = text.getFont();
+ font.drawString( text.getCharacter(), graphics, text.getFontSize(), text.getXScale(), text.getYScale(),
+ text.getX(), text.getY() );
+ }
+ catch( IOException io )
+ {
+ io.printStackTrace();
+ }
+ }
+
+ /**
+ * Get the graphics that we are currently drawing on.
+ *
+ * @return The graphics we are drawing on.
+ */
+ public Graphics2D getGraphics()
+ {
+ return graphics;
+ }
+
+ /**
+ * Get the page that is currently being drawn.
+ *
+ * @return The page that is being drawn.
+ */
+ public PDPage getPage()
+ {
+ return page;
+ }
+
+ /**
+ * Get the size of the page that is currently being drawn.
+ *
+ * @return The size of the page that is being drawn.
+ */
+ public Dimension getPageSize()
+ {
+ return pageSize;
+ }
+
+ /**
+ * Fix the y coordinate based on page rotation.
+ *
+ * @param x The x coordinate.
+ * @param y The y coordinate.
+ * @return The updated y coordinate.
+ */
+ public double fixY( double x, double y )
+ {
+ double retval = y;
+ int rotation = page.findRotation();
+ if( rotation == 0 )
+ {
+ retval = pageSize.getHeight() - y;
+ }
+ else if( rotation == 90 )
+ {
+ retval = y;
+ }
+ return retval;
+ }
+
+ /**
+ * Get the current line path to be drawn.
+ *
+ * @return The current line path to be drawn.
+ */
+ public GeneralPath getLinePath()
+ {
+ return linePath;
+ }
+
+ /**
+ * Set the line path to draw.
+ *
+ * @param newLinePath Set the line path to draw.
+ */
+ public void setLinePath(GeneralPath newLinePath)
+ {
+ linePath = newLinePath;
+ }
+
+ /**
+ * Get the current list of line paths to be drawn.
+ *
+ * @return The current list of line paths to be drawn.
+ */
+ public List getLineSubPaths()
+ {
+ return lineSubPaths;
+ }
+
+ /**
+ * Set the list of line paths to draw.
+ *
+ * @param newLineSubPaths Set the list of line paths to draw.
+ */
+ public void setLineSubPaths(List newLineSubPaths)
+ {
+ lineSubPaths = newLineSubPaths;
+ }
+
+ /**
+ * Get the non stroking color.
+ *
+ * @return The non stroking color.
+ */
+ public Color getNonStrokingColor()
+ {
+ return nonStrokingColor;
+ }
+
+ /**
+ * Set the non stroking color.
+ *
+ * @param newNonStrokingColor The non stroking color.
+ */
+ public void setNonStrokingColor(Color newNonStrokingColor)
+ {
+ nonStrokingColor = newNonStrokingColor;
+ }
+
+ /**
+ * Get the stroking color.
+ *
+ * @return The stroking color.
+ */
+ public Color getStrokingColor()
+ {
+ return strokingColor;
+ }
+
+ /**
+ * Set the stroking color.
+ *
+ * @param newStrokingColor The stroking color.
+ */
+ public void setStrokingColor(Color newStrokingColor)
+ {
+ strokingColor = newStrokingColor;
+ }
+}
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