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Revision: 11059
          http://foray.svn.sourceforge.net/foray/?rev=11059&view=rev
Author:   victormote
Date:     2010-09-30 20:47:15 +0000 (Thu, 30 Sep 2010)

Log Message:
-----------
Add basic implementations of some of the line content types.

Modified Paths:
--------------
    trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/OptimumFitLbFactory4a.java

Added Paths:
-----------
    trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbBox4a.java
    trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbGlue4a.java
    trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbPenalty4a.java
    trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LineContentIterator4a.java

Added: trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbBox4a.java
===================================================================

--- trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbBox4a.java	                        (rev 0)
+++ trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbBox4a.java	2010-09-30 20:47:15 UTC (rev 11059)
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2010 The FOray Project.
+ *      http://www.foray.org
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * This work is in part derived from the following work(s), used with the
+ * permission of the licensor:
+ *      Apache FOP, licensed by the Apache Software Foundation
+ *
+ */
+
+/*
+ * $LastChangedRevision$
+ * $LastChangedDate$
+ * $LastChangedBy$
+ */
+
+package org.foray.linebreak;
+
+import org.axsl.linebreak.LbBox;
+
+/**
+ * A hard-wired implementation of LbBox.
+ */
+public class LbBox4a implements LbBox {
+
+    /** The width of this box, in millipoints. */
+    private int width;
+
+    /**
+     * Constructor.
+     * @param width The width of this box, in millipoints.
+     */
+    public LbBox4a(final int width) {
+        this.width = width;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public int getWidth() {
+        return this.width;
+    }
+
+}

Added: trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbGlue4a.java
===================================================================
--- trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbGlue4a.java	                        (rev 0)
+++ trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbGlue4a.java	2010-09-30 20:47:15 UTC (rev 11059)
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2010 The FOray Project.
+ *      http://www.foray.org
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * This work is in part derived from the following work(s), used with the
+ * permission of the licensor:
+ *      Apache FOP, licensed by the Apache Software Foundation
+ *
+ */
+
+/*
+ * $LastChangedRevision$
+ * $LastChangedDate$
+ * $LastChangedBy$
+ */
+
+package org.foray.linebreak;
+
+import org.axsl.linebreak.LbGlue;
+
+/**
+ * A hard-wired implementation of LbGlue.
+ */
+public class LbGlue4a implements LbGlue {
+
+    /** The ideal width of this glue, in millipoints. */
+    private int idealWidth;
+
+    /** The stretchability of this glue, in millipoints. */
+    private int stretchability;
+
+    /** The shrinkability of this glue, in millipoints. */
+    private int shrinkability;
+
+    /**
+     * Constructor.
+     * @param idealWidth The ideal width of this glue, in millipoints.
+     * @param stretchability The stretchability of this glue, in millipoints.
+     * @param shrinkability The shrinkability of this glue, in millipoints.
+     */
+    public LbGlue4a(final int idealWidth, final int stretchability, final int shrinkability) {
+        this.idealWidth = idealWidth;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public int getIdealWidth() {
+        return this.idealWidth;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public int getStretchability() {
+        return this.stretchability;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public int getShrinkability() {
+        return this.shrinkability;
+    }
+
+}

Added: trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbPenalty4a.java
===================================================================
--- trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbPenalty4a.java	                        (rev 0)
+++ trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LbPenalty4a.java	2010-09-30 20:47:15 UTC (rev 11059)
@@ -0,0 +1,80 @@
+/*
+ * Copyright 2010 The FOray Project.
+ *      http://www.foray.org
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * This work is in part derived from the following work(s), used with the
+ * permission of the licensor:
+ *      Apache FOP, licensed by the Apache Software Foundation
+ *
+ */
+
+/*
+ * $LastChangedRevision$
+ * $LastChangedDate$
+ * $LastChangedBy$
+ */
+
+package org.foray.linebreak;
+
+import org.axsl.linebreak.LbPenalty;
+
+/**
+ * A hard-wired implementation of LbPenalty.
+ */
+public class LbPenalty4a implements LbPenalty {
+
+    /** The width of this penalty, in millipoints. */
+    private int width;
+
+    /** The penalty value. */
+    private int penalty;
+
+    /** Indicates whether this is a "flagged" penalty. */
+    private boolean flagged;
+
+    /**
+     * Constructor.
+     * @param width The width of this box, in millipoints.
+     * @param penalty The penalty value.
+     * @param flagged Indicates whether this is a "flagged" penalty.
+     */
+    public LbPenalty4a(final int width, final int penalty, final boolean flagged) {
+        this.width = width;
+        this.penalty = penalty;
+        this.flagged = flagged;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public int getWidth() {
+        return this.width;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public int getPenalty() {
+        return this.penalty;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public boolean isFlagged() {
+        return this.flagged;
+    }
+
+}

Added: trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LineContentIterator4a.java
===================================================================
--- trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LineContentIterator4a.java	                        (rev 0)
+++ trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/LineContentIterator4a.java	2010-09-30 20:47:15 UTC (rev 11059)
@@ -0,0 +1,141 @@
+/*
+ * Copyright 2010 The FOray Project.
+ *      http://www.foray.org
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * This work is in part derived from the following work(s), used with the
+ * permission of the licensor:
+ *      Apache FOP, licensed by the Apache Software Foundation
+ *
+ */
+
+/*
+ * $LastChangedRevision$
+ * $LastChangedDate$
+ * $LastChangedBy$
+ */
+
+package org.foray.linebreak;
+
+import org.axsl.linebreak.LbContent;
+import org.axsl.linebreak.LineContentIterator;
+import org.axsl.text.line.LineContent;
+import org.axsl.text.line.LineNonText;
+import org.axsl.text.line.LineText;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.NoSuchElementException;
+
+/**
+ * Accepts line content as input and converts it to input for the line-breaking system.
+ */
+public class LineContentIterator4a implements LineContentIterator {
+
+    /** The list of line content that has been added as input to the iterator. */
+    private List<LineContent> lineContentList = new ArrayList<LineContent>();
+
+    /** Index into {@link #lineContentList} indicating which item in the list is will next be processed by the
+     * iterator. */
+    private int lineContentIndex = 0;
+
+    /** The index into {@link #getCurrentLineText()} indicating which character in that text item will next be processed
+     * by the iterator. */
+    private int currentLineTextItemIndex = -1;
+
+    /**
+     * Constructor.
+     */
+    public LineContentIterator4a() {
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public void addContent(final LineContent newContent) {
+        this.lineContentList.add(newContent);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public boolean hasNext() {
+        if (this.lineContentIndex >= this.lineContentList.size()) {
+            return false;
+        }
+        if (this.lineContentIndex == this.lineContentList.size() - 1) {
+            /* The current item is the last item. If it is a text item, we need to see whether we are at the end of
+             * the sequence. */
+            final LineText lineText = getCurrentLineText();
+            if (lineText != null
+                    && this.currentLineTextItemIndex >= lineText.inlineText().length()) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Convenenience method that returns the current line content item as a LineText item if it is one.
+     * @return The current line content as a LineText item if it is one. Otherwise, returns null.
+     */
+    private LineText getCurrentLineText() {
+        if (this.lineContentIndex >= this.lineContentList.size()) {
+            return null;
+        }
+        if (this.lineContentList.get(this.lineContentIndex) instanceof LineText) {
+            return (LineText) this.lineContentList.get(this.lineContentIndex);
+        }
+        return null;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public LbContent next() {
+        if (! hasNext()) {
+            throw new NoSuchElementException("No more elements in " + this.getClass().getName());
+        }
+        final LineContent lineContent = this.lineContentList.get(this.lineContentIndex);
+        if (lineContent instanceof LineNonText) {
+            final LineNonText lineNonText = (LineNonText) lineContent;
+            final int optimum = lineNonText.inlineSizeOptimum(1);
+            final int minimum = lineNonText.inlineSizeMinimum(1);
+            final int maximum = lineNonText.inlineSizeMaximum(1);
+            this.lineContentIndex ++;
+            return new LbGlue4a(optimum, maximum - optimum, optimum - minimum);
+        }
+        if (lineContent instanceof LineText) {
+            final LineText lineText = (LineText) lineContent;
+            final int codePoint = lineText.inlineText().charAt(this.currentLineTextItemIndex);
+            final int width = lineText.inlinePrimaryFont().getFont().width(codePoint, lineText.inlineFontSize());
+            this.currentLineTextItemIndex ++;
+            if (this.currentLineTextItemIndex >= lineText.inlineText().length()) {
+                this.currentLineTextItemIndex = -1;
+                this.lineContentIndex ++;
+            }
+            return new LbBox4a(width);
+        }
+        throw new IllegalStateException("Unknown LineContent item: " + lineContent.getClass().getName());
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public void remove() {
+        throw new UnsupportedOperationException("Operation \"remove\" is not supported by "
+                + this.getClass().getName());
+    }
+
+}

Modified: trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/OptimumFitLbFactory4a.java
===================================================================
--- trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/OptimumFitLbFactory4a.java	2010-09-30 16:52:35 UTC (rev 11058)
+++ trunk/foray/foray-linebreak/src/main/java/org/foray/linebreak/OptimumFitLbFactory4a.java	2010-09-30 20:47:15 UTC (rev 11059)
@@ -30,6 +30,7 @@
 
 import org.axsl.linebreak.LineBreaker;
 import org.axsl.linebreak.LineBreakerFactory;
+import org.axsl.linebreak.LineContentIterator;
 
 /**
  * Factory for the Knuth-Plass optimum-fit line-breaking algorithm.
@@ -43,5 +44,12 @@
         return new OptimumFitLb4a();
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    public LineContentIterator obtainLineContentIterator() {
+        return new LineContentIterator4a();
+    }
 
+
 }


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