--- /dev/null
+package com.nwalsh.saxon;
+
+import java.io.*;
+import java.awt.*;
+import java.awt.image.*;
+import java.lang.Thread;
+import java.util.StringTokenizer;
+
+/**
+ * <p>Saxon extension to examine intrinsic size of images</p>
+ *
+ * <p>$Id$</p>
+ *
+ * <p>Copyright (C) 2002 Norman Walsh.</p>
+ *
+ * <p>This class provides a
+ * <a href="http://saxon.sourceforge.net/">Saxon</a>
+ * extension to find the intrinsic size of images.</p>
+ *
+ * <p><b>Change Log:</b></p>
+ * <dl>
+ * <dt>1.0</dt>
+ * <dd><p>Initial release.</p></dd>
+ * </dl>
+ *
+ * @author Norman Walsh
+ * <a href="mailto:ndw@nwalsh.com">ndw@nwalsh.com</a>
+ *
+ * @version $Id$
+ *
+ */
+public class ImageIntrinsics implements ImageObserver {
+ boolean imageLoaded = false;
+ boolean imageFailed = false;
+ Image image = null;
+ int width = -1;
+ int depth = -1;
+
+ /**
+ * <p>Constructor for ImageIntrinsics</p>
+ */
+ public ImageIntrinsics(String imageFn) {
+ image = Toolkit.getDefaultToolkit().getImage (imageFn);
+ width = image.getWidth(this);
+
+ while (!imageFailed && (width == -1 || depth == -1)) {
+ try {
+ java.lang.Thread.currentThread().sleep(50);
+ } catch (Exception e) {
+ // nop;
+ }
+ width = image.getWidth(this);
+ depth = image.getHeight(this);
+ }
+
+ if (imageFailed) {
+ // Maybe it's an EPS or PDF?
+ // FIXME: this code is crude
+ BufferedReader ir = null;
+ String line = null;
+ int lineLimit = 100;
+
+ try {
+ ir = new BufferedReader(new FileReader(new File(imageFn)));
+ line = ir.readLine();
+
+ if (line != null && line.startsWith("%PDF-")) {
+ // We've got a PDF!
+ while (lineLimit > 0 && line != null) {
+ lineLimit--;
+ if (line.startsWith("/CropBox [")) {
+ line = line.substring(10);
+ if (line.indexOf("]") >= 0) {
+ line = line.substring(0, line.indexOf("]"));
+ }
+ parseBox(line);
+ lineLimit = 0;
+ }
+ line = ir.readLine();
+ }
+ } else if (line != null && line.startsWith("%!") && line.indexOf(" EPSF-") > 0) {
+ // We've got an EPS!
+ while (lineLimit > 0 && line != null) {
+ lineLimit--;
+ if (line.startsWith("%%BoundingBox: ")) {
+ line = line.substring(15);
+ parseBox(line);
+ lineLimit = 0;
+ }
+ line = ir.readLine();
+ }
+ }
+ } catch (Exception e) {
+ // nop;
+ }
+
+ if (ir != null) {
+ try {
+ ir.close();
+ } catch (Exception e) {
+ // nop;
+ }
+ }
+ }
+ }
+
+ public int getWidth(int defaultWidth) {
+ if (width >= 0) {
+ return width;
+ } else {
+ return defaultWidth;
+ }
+ }
+
+ public int getDepth(int defaultDepth) {
+ if (depth >= 0) {
+ return depth;
+ } else {
+ return defaultDepth;
+ }
+ }
+
+ private void parseBox(String line) {
+ int [] corners = new int [4];
+ int count = 0;
+
+ StringTokenizer st = new StringTokenizer(line);
+ while (count < 4 && st.hasMoreTokens()) {
+ try {
+ corners[count++] = Integer.parseInt(st.nextToken());
+ } catch (Exception e) {
+ // nop;
+ }
+ }
+
+ width = corners[2] - corners[0];
+ depth = corners[3] - corners[1];
+ }
+
+ public boolean imageUpdate(Image img, int infoflags,
+ int x, int y, int width, int height) {
+ if ((infoflags & ImageObserver.ERROR) == ImageObserver.ERROR) {
+ imageFailed = true;
+ return false;
+ }
+
+ // I really only care about the width and height, but if I return false as
+ // soon as those are available, the BufferedInputStream behind the loader
+ // gets closed too early.
+ int flags = ImageObserver.ALLBITS;
+ if ((infoflags & flags) == flags) {
+ return false;
+ } else {
+ return true;
+ }
+ }
+}
--- /dev/null
+package com.nwalsh.xalan;
+
+import java.io.*;
+import java.awt.*;
+import java.awt.image.*;
+import java.lang.Thread;
+import java.util.StringTokenizer;
+
+import org.apache.xalan.extensions.ExpressionContext;
+
+/**
+ * <p>Saxon extension to examine intrinsic size of images</p>
+ *
+ * <p>$Id$</p>
+ *
+ * <p>Copyright (C) 2002 Norman Walsh.</p>
+ *
+ * <p>This class provides a
+ * <a href="http://xml.apache.org/">Xalan</a>
+ * extension to find the intrinsic size of images.</p>
+ *
+ * <p><b>Change Log:</b></p>
+ * <dl>
+ * <dt>1.0</dt>
+ * <dd><p>Initial release.</p></dd>
+ * </dl>
+ *
+ * @author Norman Walsh
+ * <a href="mailto:ndw@nwalsh.com">ndw@nwalsh.com</a>
+ *
+ * @version $Id$
+ *
+ */
+public class ImageIntrinsics implements ImageObserver {
+ boolean imageLoaded = false;
+ boolean imageFailed = false;
+ Image image = null;
+ int width = -1;
+ int depth = -1;
+
+ /**
+ * <p>Constructor for ImageIntrinsics</p>
+ */
+ public ImageIntrinsics(ExpressionContext context, String imageFn) {
+ image = Toolkit.getDefaultToolkit().getImage (imageFn);
+ width = image.getWidth(this);
+
+ while (!imageFailed && (width == -1 || depth == -1)) {
+ try {
+ java.lang.Thread.currentThread().sleep(50);
+ } catch (Exception e) {
+ // nop;
+ }
+ width = image.getWidth(this);
+ depth = image.getHeight(this);
+ }
+
+ if (imageFailed) {
+ // Maybe it's an EPS or PDF?
+ // FIXME: this code is crude
+ BufferedReader ir = null;
+ String line = null;
+ int lineLimit = 100;
+
+ try {
+ ir = new BufferedReader(new FileReader(new File(imageFn)));
+ line = ir.readLine();
+
+ if (line != null && line.startsWith("%PDF-")) {
+ // We've got a PDF!
+ while (lineLimit > 0 && line != null) {
+ lineLimit--;
+ if (line.startsWith("/CropBox [")) {
+ line = line.substring(10);
+ if (line.indexOf("]") >= 0) {
+ line = line.substring(0, line.indexOf("]"));
+ }
+ parseBox(line);
+ lineLimit = 0;
+ }
+ line = ir.readLine();
+ }
+ } else if (line != null && line.startsWith("%!") && line.indexOf(" EPSF-") > 0) {
+ // We've got an EPS!
+ while (lineLimit > 0 && line != null) {
+ lineLimit--;
+ if (line.startsWith("%%BoundingBox: ")) {
+ line = line.substring(15);
+ parseBox(line);
+ lineLimit = 0;
+ }
+ line = ir.readLine();
+ }
+ }
+ } catch (Exception e) {
+ // nop;
+ }
+
+ if (ir != null) {
+ try {
+ ir.close();
+ } catch (Exception e) {
+ // nop;
+ }
+ }
+ }
+ }
+
+ public int getWidth(ExpressionContext context, int defaultWidth) {
+ if (width >= 0) {
+ return width;
+ } else {
+ return defaultWidth;
+ }
+ }
+
+ public int getDepth(ExpressionContext context, int defaultDepth) {
+ if (depth >= 0) {
+ return depth;
+ } else {
+ return defaultDepth;
+ }
+ }
+
+ private void parseBox(String line) {
+ int [] corners = new int [4];
+ int count = 0;
+
+ StringTokenizer st = new StringTokenizer(line);
+ while (count < 4 && st.hasMoreTokens()) {
+ try {
+ corners[count++] = Integer.parseInt(st.nextToken());
+ } catch (Exception e) {
+ // nop;
+ }
+ }
+
+ width = corners[2] - corners[0];
+ depth = corners[3] - corners[1];
+ }
+
+ public boolean imageUpdate(Image img, int infoflags,
+ int x, int y, int width, int height) {
+ if ((infoflags & ImageObserver.ERROR) == ImageObserver.ERROR) {
+ imageFailed = true;
+ return false;
+ }
+
+ // I really only care about the width and height, but if I return false as
+ // soon as those are available, the BufferedInputStream behind the loader
+ // gets closed too early.
+ int flags = ImageObserver.ALLBITS;
+ if ((infoflags & flags) == flags) {
+ return false;
+ } else {
+ return true;
+ }
+ }
+}
projects / docbook-dsssl / commitdiff