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Diffstat (limited to 'tools/viewer/Nav.java')
| -rw-r--r-- | tools/viewer/Nav.java | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/tools/viewer/Nav.java b/tools/viewer/Nav.java new file mode 100644 index 000000000..ecdb78897 --- /dev/null +++ b/tools/viewer/Nav.java @@ -0,0 +1,180 @@ +/* Portions Copyright (C) 2001 Artifex Software Inc. + + This software is distributed under license and may not be copied, modified + or distributed except as expressly authorized under the terms of that + license. Refer to licensing information at http://www.artifex.com/ or + contact Artifex Software, Inc., 101 Lucas Valley Road #110, + San Rafael, CA 94903, (415)492-9861, for further information. */ + +import java.awt.*; +import java.awt.image.*; +import java.awt.event.*; +import java.io.File; +import javax.swing.*; +import javax.swing.filechooser.*; + +/** + * Two window nav + zoomed Viewer for PCL and PXL files. + * + * Usage: + * java Nav ../frs96.pxl + * + * Adds a smaller navigation window coupled to a Gview window. + * This allows a small portion of a page to be viewed at high resolution + * in the Gview window with navigation occuring via the Nav window. + * + * Mostly inherits behavior and reflects action on this window and the + * Gview zoomed window. + * + * @version $Revision: 1643 $ + * @author Stefan Kemper + */ +public class Nav extends Gview { + + public Nav() { + pageView = new Gview(); + } + + public void runMain(String[] args) { + + // this window is smaller/lower res, count pages now. + runJob(args, startingRes / zoomWindowRatio, true); + + // zoom window is higher res, don't count pages now. + pageView.runJob(args, startingRes, false); + } + + /** main program */ + public static void main( String[] args ) + { + Nav view = new Nav(); + + if (args.length < 1) { + File file = new File("GhostPrinter.pcl"); + if (file.exists()) { + // open demo file + args = new String[1]; + args[0] = new String("GhostPrinter.pcl"); + } + } + System.out.print(usage()); + + if (args.length < 1) { + // no demo file start with file open + view.fileOpen(); + } + view.runMain(args); + } + + public void nextPage() { + pageView.setPage(pageNumber+1); + super.nextPage(); + } + + public void prevPage() { + pageView.setPage(pageNumber-1); + super.prevPage(); + } + + /** low res image is ready, + * if we are not getting the next page + * start generation of the high res image + */ + public void imageIsReady( BufferedImage newImage ) { + super.imageIsReady(newImage); + + if (!pickle.busy() && !pageView.pickle.busy()) { + pageView.pickle.startProduction(pageNumber); + } + } + + /** thread counting pages is finished update status display */ + public void pageCountIsReady( int pageCount ) { + setPageCount( pageCount ); + pageView.setPageCount( pageCount ); + } + + /** moves/drags zoomin box and causes regerenation of a new viewport + */ + protected void translate(int x, int y) { + origX -= x; + origY -= y; + + double x1 = origX; + double y1 = origY; + + double sfx = desiredRes / origRes; + double sfy = desiredRes / origRes; + + double psfx = origX / origW * pageView.origW / pageView.origRes * pageView.desiredRes; + double psfy = origY / origH * pageView.origH / pageView.origRes * pageView.desiredRes; + + pageView.translateTo( psfx, psfy ); + repaint(); + } + + /** Paint low res image with red zoom box + * zoom box uses xor realtime drag. + */ + public void paint( Graphics g ) + { + int h = (int)(origH * pageView.origRes / pageView.desiredRes); + int w = (int)(origW * pageView.origRes / pageView.desiredRes); + if (drag == true) { + g.setXORMode(Color.cyan); + g.drawRect((int)lastX, (int)lastY, w, h); + g.drawRect((int)newX, (int)newY, w, h); + } + else { + g.setPaintMode(); + g.drawImage(currentPage, 0, 0, this); + g.setColor(Color.red); + g.drawRect((int)origX, (int)origY, w, h); + } + } + + /** pageView gets regenerated at higher resolution, + * repaint updates zoomin box. + */ + protected void zoomIn( int x, int y ) { + + double psfx = x / origW * pageView.origW / pageView.origRes * pageView.desiredRes; + double psfy = y / origH * pageView.origH / pageView.origRes * pageView.desiredRes; + pageView.origX = pageView.origY = 0; + pageView.zoomIn((int)psfx,(int)psfy); + repaint(); + } + + /** pageView gets regenerated at lower resolution, + * repaint updates zoomin box. + */ + protected void zoomOut( int x, int y ) { + double psfx = x / origW * pageView.origW / pageView.origRes * pageView.desiredRes; + double psfy = y / origH * pageView.origH / pageView.origRes * pageView.desiredRes; + pageView.origX = pageView.origY = 0; + pageView.zoomOut(0,0); + repaint(); + } + + /** pageView gets regenerated at requested resolution, + * repaint updates zoomin box. + */ + protected void zoomToRes( double res ) { + pageView.zoomToRes(res); + repaint(); + } + + /** pageView gets regenerated with the request scalefactor, + * repaint updates zoomin box. + */ + protected void zoomFactor( double factor ) { + pageView.zoomFactor(factor); + repaint(); + } + + /** + * High resolution window. + * @link aggregationByValue + */ + private Gview pageView; +} |