Here comes 3 classes that are used to convert CSS font values to
constants usable by java.awt.Font.
2006-08-24 Roman Kennke <[EMAIL PROTECTED]>
* gnu/javax/swing/text/html/css/FontSize.java,
* gnu/javax/swing/text/html/css/FontStyle.java,
* gnu/javax/swing/text/html/css/FontWeight.java:
New classes. Used to convert CSS font attributes to AWT/Swing
Font constants.
/Roman
Index: gnu/javax/swing/text/html/css/FontSize.java
===================================================================
RCS file: gnu/javax/swing/text/html/css/FontSize.java
diff -N gnu/javax/swing/text/html/css/FontSize.java
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ gnu/javax/swing/text/html/css/FontSize.java 24 Aug 2006 16:02:47 -0000
@@ -0,0 +1,156 @@
+/* FontSize.java -- Converts CSS font size values into real values
+ Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.javax.swing.text.html.css;
+
+/**
+ * Converts CSS font-size values into real (point) values.
+ *
+ * @author Roman Kennke ([EMAIL PROTECTED])
+ */
+public class FontSize
+{
+
+ /**
+ * The CSS value.
+ */
+ private String value;
+
+ /**
+ * The default size for 'medium' absolute size. The other absolute sizes
+ * are calculated from this.
+ */
+ public static final int DEFAULT_FONT_SIZE = 12;
+
+ /**
+ * The scaling factors relative to the medium size. Medium is at index 2.
+ */
+ private static final double[] SCALE = {0.8, 0.9, 1.0, 1.2, 1.4, 1.6, 1.8 };
+
+ /**
+ * Creates a new FontSize for the specified value.
+ *
+ * @param val the value to convert
+ */
+ public FontSize(String val)
+ {
+ value = val;
+ }
+
+ /**
+ * Returns the converted real value in point.
+ *
+ * @return the converted real value in point
+ */
+ public int getValue()
+ {
+ int intVal;
+ if (value.contains("pt"))
+ intVal = mapPoints();
+ else if (value.contains("px"))
+ intVal = mapPixels();
+ else
+ intVal = mapAbsolute();
+ // FIXME: Allow relative font values, ('larger' and 'smaller'). This
+ // requires knowledge about the parent element's font size.
+ return intVal;
+ }
+
+ /**
+ * Maps point values ('XXXpt').
+ *
+ * @return the real font size
+ */
+ private int mapPoints()
+ {
+ int end = value.indexOf("pt");
+ String number = value.substring(0, end);
+ int intVal = Integer.parseInt(number);
+ return intVal;
+ }
+
+ /**
+ * Maps pixel values ('XXXpx').
+ *
+ * @return the real font size
+ */
+ private int mapPixels()
+ {
+ int end = value.indexOf("pt");
+ String number = value.substring(0, end);
+ int intVal = Integer.parseInt(number);
+ return intVal;
+ }
+
+ /**
+ * Maps absolute font-size values.
+ *
+ * @return the real value
+ */
+ private int mapAbsolute()
+ {
+ int index;
+ if (value.equals("xx-small") || value.equals("x-small"))
+ index = 0;
+ else if (value.equals("small"))
+ index = 1;
+ else if (value.equals("medium"))
+ index = 2;
+ else if (value.equals("large"))
+ index = 3;
+ else if (value.equals("x-large"))
+ index = 4;
+ else if (value.equals("xx-large"))
+ index = 5;
+ else
+ index = 2;
+ double scale = SCALE[index];
+ // FIXME: Scale the real medium size of the document, rather than the
+ // constant here.
+ int intVal = (int) (scale * DEFAULT_FONT_SIZE);
+ return intVal;
+ }
+
+ /**
+ * Returns the string representation.
+ */
+ public String toString()
+ {
+ return value;
+ }
+}
Index: gnu/javax/swing/text/html/css/FontStyle.java
===================================================================
RCS file: gnu/javax/swing/text/html/css/FontStyle.java
diff -N gnu/javax/swing/text/html/css/FontStyle.java
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ gnu/javax/swing/text/html/css/FontStyle.java 24 Aug 2006 16:02:47 -0000
@@ -0,0 +1,80 @@
+/* FontStyle.java -- Converts font-size CSS values
+ Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.javax.swing.text.html.css;
+
+import java.awt.Font;
+
+/**
+ * Converts font-size CSS values to a form to be used by [EMAIL PROTECTED] java.awt.Font}.
+ *
+ * @author Roman Kennke ([EMAIL PROTECTED])
+ */
+public class FontStyle
+{
+
+ /**
+ * The real value.
+ */
+ private String value;
+
+ /**
+ * Creates a new instance.
+ *
+ * @param val the CSS value
+ */
+ public FontStyle(String val)
+ {
+ value = val;
+ }
+
+ /**
+ * Returns the converted value.
+ *
+ * @return the converted value
+ */
+ public int getValue()
+ {
+ int intVal;
+ if (value.equals("italic") || value.equals("oblique"))
+ intVal = Font.ITALIC;
+ else
+ intVal = Font.PLAIN;
+ return intVal;
+ }
+}
Index: gnu/javax/swing/text/html/css/FontWeight.java
===================================================================
RCS file: gnu/javax/swing/text/html/css/FontWeight.java
diff -N gnu/javax/swing/text/html/css/FontWeight.java
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ gnu/javax/swing/text/html/css/FontWeight.java 24 Aug 2006 16:02:47 -0000
@@ -0,0 +1,84 @@
+/* FontWeight.java -- Converts font-weight values
+ Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.javax.swing.text.html.css;
+
+import java.awt.Font;
+
+/**
+ * Converts font-weight CSS values to the constants defined for
+ * [EMAIL PROTECTED] java.awt.Font}
+ *
+ * @author Roman Kennke ([EMAIL PROTECTED])
+ */
+public class FontWeight
+{
+
+ /**
+ * The value to convert.
+ */
+ private String value;
+
+ /**
+ * Creates a new instance.
+ *
+ * @param val the value to convert
+ */
+ public FontWeight(String val)
+ {
+ value = val;
+ }
+
+ /**
+ * Returns the converted value.
+ *
+ * @return the converted value
+ */
+ public int getValue()
+ {
+ int intVal;
+ if (value.equals("normal"))
+ intVal = Font.PLAIN;
+ else if (value.equals("bold"))
+ intVal = Font.BOLD;
+ else
+ // FIXME: Implement finer-grained weights.
+ intVal = Font.PLAIN;
+ return intVal;
+ }
+}
