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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/java/awt/font/autofit
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Diffstat (limited to 'libjava/classpath/gnu/java/awt/font/autofit')
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/AutoHinter.java83
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/AxisHints.java112
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/Constants.java86
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/Edge.java82
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/GlyphHints.java640
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/HintScaler.java53
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/Latin.java1363
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/LatinAxis.java62
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/LatinBlue.java61
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/LatinMetrics.java66
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/Script.java62
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/ScriptMetrics.java53
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/Segment.java97
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/Utils.java255
-rw-r--r--libjava/classpath/gnu/java/awt/font/autofit/Width.java64
15 files changed, 3139 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/AutoHinter.java b/libjava/classpath/gnu/java/awt/font/autofit/AutoHinter.java
new file mode 100644
index 000000000..b0420ab7a
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/AutoHinter.java
@@ -0,0 +1,83 @@
+/* AutoHinter.java -- The entry point into the hinter implementation.
+ 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.java.awt.font.autofit;
+
+import gnu.java.awt.font.opentype.Hinter;
+import gnu.java.awt.font.opentype.OpenTypeFont;
+import gnu.java.awt.font.opentype.truetype.Fixed;
+import gnu.java.awt.font.opentype.truetype.Zone;
+
+/**
+ * The public interface to the automatic gridfitter.
+ */
+public class AutoHinter
+ implements Hinter
+{
+ Latin latinScript;
+ LatinMetrics metrics;
+ GlyphHints hints;
+
+ HintScaler scaler = new HintScaler();
+ public void init(OpenTypeFont font)
+ {
+ // TODO: Should support other scripts too.
+ latinScript = new Latin();
+ metrics = new LatinMetrics(font);
+ latinScript.initMetrics(metrics, font);
+ scaler.face = font;
+ }
+
+ public void applyHints(Zone outline)
+ {
+ if (hints == null)
+ hints = new GlyphHints();
+ scaler.xScale = Fixed.valueOf16(outline.scaleX * 64);
+ scaler.yScale = Fixed.valueOf16(outline.scaleY * 64);
+ latinScript.scaleMetrics(metrics, scaler);
+ latinScript.applyHints(hints, outline, metrics);
+ }
+
+ public void setFlags(int flags)
+ {
+ if (hints == null)
+ hints = new GlyphHints();
+ hints.flags = flags;
+ }
+
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/AxisHints.java b/libjava/classpath/gnu/java/awt/font/autofit/AxisHints.java
new file mode 100644
index 000000000..87f2abcc3
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/AxisHints.java
@@ -0,0 +1,112 @@
+/* AxisHints.java -- Hints specific to an axis
+ 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.java.awt.font.autofit;
+
+class AxisHints
+{
+
+ Segment[] segments;
+ int majorDir;
+ int numSegments;
+ int numEdges;
+ Edge[] edges;
+
+ AxisHints()
+ {
+ segments = new Segment[4];
+ edges = new Edge[4];
+ }
+
+ Segment newSegment()
+ {
+ if (numSegments >= segments.length)
+ {
+ // Grow array.
+ int newMax = segments.length;
+ newMax += (newMax >> 2) + 4; // From FreeType.
+ Segment[] newSegs = new Segment[newMax];
+ System.arraycopy(segments, 0, newSegs, 0, numSegments);
+ segments = newSegs;
+ }
+ Segment seg = new Segment();
+ segments[numSegments] = seg;
+ numSegments++;
+ return seg;
+ }
+
+ public Edge newEdge(int pos)
+ {
+ if (numEdges >= edges.length)
+ {
+ // Grow array.
+ int newMax = edges.length;
+ newMax += (newMax >> 2) + 4; // From FreeType.
+ Edge[] newEdges = new Edge[newMax];
+ System.arraycopy(edges, 0, newEdges, 0, numEdges);
+ edges = newEdges;
+ }
+ int edgeIndex = numEdges;
+ Edge edge = edges[edgeIndex] = new Edge();
+ while (edgeIndex > 0 && edges[edgeIndex - 1].fpos > pos)
+ {
+ edges[edgeIndex] = edges[edgeIndex - 1];
+ edgeIndex--;
+ }
+ edges[edgeIndex] = edge;
+ numEdges++;
+ edge.fpos = pos;
+
+ return edge;
+
+ }
+
+ int getEdgeIndex(Edge edge2)
+ {
+ int idx = -1;
+ for (int i = 0; i < numEdges; i++)
+ {
+ if (edges[i] == edge2)
+ {
+ idx = i;
+ break;
+ }
+ }
+ return idx;
+ }
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/Constants.java b/libjava/classpath/gnu/java/awt/font/autofit/Constants.java
new file mode 100644
index 000000000..c5b90fa54
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/Constants.java
@@ -0,0 +1,86 @@
+/* Constants.java -- Some constants used in the autofitter
+ 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.java.awt.font.autofit;
+
+/**
+ * Some constants used in the autofitter.
+ */
+interface Constants
+{
+
+ /**
+ * The horizontal dimension.
+ */
+ static final int DIMENSION_HORZ = 0;
+
+ /**
+ * The vertical dimension.
+ */
+ static final int DIMENSION_VERT = 1;
+
+ /**
+ * The number of dimensions.
+ */
+ static final int DIMENSION_MAX = 2;
+
+ /**
+ * Indicates a vector with no specific direction.
+ */
+ static final int DIR_NONE = 0;
+
+ /**
+ * Right direction.
+ */
+ static final int DIR_RIGHT = 1;
+
+ /**
+ * Left direction.
+ */
+ static final int DIR_LEFT = -1;
+
+ /**
+ * Up direction.
+ */
+ static final int DIR_UP = 2;
+
+ /**
+ * Down direction.
+ */
+ static final int DIR_DOWN = -2;
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/Edge.java b/libjava/classpath/gnu/java/awt/font/autofit/Edge.java
new file mode 100644
index 000000000..6420fa1cb
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/Edge.java
@@ -0,0 +1,82 @@
+/* Edge.java -- An edge of segments
+ 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.java.awt.font.autofit;
+
+import gnu.java.lang.CPStringBuilder;
+
+class Edge
+{
+ int fpos;
+ Segment first;
+ Segment last;
+ int opos;
+ Edge link;
+ Edge serif;
+ int flags;
+ int dir;
+ Width blueEdge;
+ int pos;
+ int scale;
+
+ public String toString()
+ {
+ CPStringBuilder s = new CPStringBuilder();
+ s.append("[Edge] id");
+ s.append(hashCode());
+ s.append(", fpos: ");
+ s.append(fpos);
+ s.append(", opos: ");
+ s.append(opos);
+ s.append(", pos: ");
+ s.append(pos);
+ s.append(", dir: ");
+ s.append(dir);
+ s.append(", serif: ");
+ s.append(serif != null ? serif.hashCode() : "null");
+ s.append(", link: ");
+ s.append(link != null ? link.hashCode() : "null");
+ s.append(", flags: " + flags);
+ s.append(", blue: " + blueEdge);
+ s.append(", first: ");
+ s.append(first == null ? "null" : first.hashCode());
+ s.append(", last: ");
+ s.append(last == null ? "null" : last.hashCode());
+ return s.toString();
+ }
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/GlyphHints.java b/libjava/classpath/gnu/java/awt/font/autofit/GlyphHints.java
new file mode 100644
index 000000000..033d63fa4
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/GlyphHints.java
@@ -0,0 +1,640 @@
+/* GlyphHints.java -- Data and methods for actual hinting
+ 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.java.awt.font.autofit;
+
+import gnu.java.awt.font.FontDelegate;
+import gnu.java.awt.font.opentype.truetype.Fixed;
+import gnu.java.awt.font.opentype.truetype.Point;
+import gnu.java.awt.font.opentype.truetype.Zone;
+
+/**
+ * The data and methods used for the actual hinting process.
+ */
+class GlyphHints
+ implements Constants
+{
+
+ int xScale;
+ int xDelta;
+ int yScale;
+ int yDelta;
+
+ AxisHints[] axis;
+
+ Point[] points;
+ int numPoints;
+ int maxPoints;
+
+ Point[] contours;
+ int numContours;
+ int maxContours;
+
+ ScriptMetrics metrics;
+
+ int flags;
+
+ GlyphHints()
+ {
+ axis = new AxisHints[Constants.DIMENSION_MAX];
+ axis[Constants.DIMENSION_VERT] = new AxisHints();
+ axis[Constants.DIMENSION_HORZ] = new AxisHints();
+
+ xScale = Fixed.ONE;
+ yScale = Fixed.ONE;
+ }
+
+ void rescale(ScriptMetrics m)
+ {
+ metrics = m;
+ // TODO: Copy scalerFlags.
+ }
+
+ void reload(Zone outline)
+ {
+ numPoints = 0;
+ numContours = 0;
+ axis[0].numSegments = 0;
+ axis[0].numEdges = 0;
+ axis[1].numSegments = 0;
+ axis[1].numEdges = 0;
+
+ // Create/reallocate the contours array.
+ int newMax = outline.getNumContours();
+ if (newMax > maxContours || contours == null)
+ {
+ newMax = (newMax + 3) & ~3; // Taken from afhints.c .
+ Point[] newContours = new Point[newMax];
+ if (contours != null)
+ {
+ System.arraycopy(contours, 0, newContours, 0, maxContours);
+ }
+ contours = newContours;
+ maxContours = newMax;
+ }
+
+ // Create/reallocate the points array.
+ newMax = outline.getSize() + 2;
+ if (newMax > maxPoints || points == null)
+ {
+ newMax = (newMax + 2 + 7) & ~7; // Taken from afhints.c .
+ Point[] newPoints = new Point[newMax];
+ if (points != null)
+ {
+ System.arraycopy(points, 0, newPoints, 0, maxPoints);
+ }
+ points = newPoints;
+ maxPoints = newMax;
+ }
+
+ numPoints = outline.getSize() - 4; // 4 phantom points.
+ numContours = outline.getNumContours();
+
+ // Set major direction. We don't handle Type 1 fonts yet.
+ axis[DIMENSION_HORZ].majorDir = DIR_UP;
+ axis[DIMENSION_VERT].majorDir = DIR_LEFT;
+
+ // TODO: Freetype seems to scale and translate the glyph at that point.
+ // I suppose that this is not really needed.
+ // The scales are scaling from font units to 1/64 device pixels.
+ xScale = Fixed.valueOf16(outline.scaleX * 64);
+ yScale = Fixed.valueOf16(outline.scaleY * 64);
+
+ // FIXME: What is that xDelta and yDelta used for?
+ System.arraycopy(outline.getPoints(), 0, points, 0, numPoints);
+
+ // Setup prev and next and contours array.
+ // TODO: Probably cache this.
+ contours = new Point[numContours];
+ Point currentContour = points[0];
+ for (int i = 0, cIndex = 0; i < numPoints; i++)
+ {
+ // Start new contour when the last point has been a contour end.
+ if (outline.isContourEnd(i))
+ {
+ // Connect the contour end point to the start point.
+ points[i].setNext(currentContour);
+ currentContour.setPrev(points[i]);
+ contours[cIndex] = currentContour;
+ cIndex++;
+ currentContour = i < numPoints - 1 ? points[i + 1] : null;
+ }
+ else
+ {
+ // Connect the current and the previous point.
+ points[i].setNext(points[i + 1]);
+ points[i + 1].setPrev(points[i]);
+ }
+ }
+ // Compute directions of in and out vectors of all points as well
+ // as the weak point flag.
+ for (int i = 0; i < numPoints; i++)
+ {
+ // Compute in and out dir.
+ Point p = points[i];
+ Point prev = p.getPrev();
+ int inX = p.getOrigX() - prev.getOrigX();
+ int inY = p.getOrigY() - prev.getOrigY();
+ p.setInDir(Utils.computeDirection(inX, inY));
+ Point next = p.getNext();
+ int outX = next.getOrigX() - p.getOrigX();
+ int outY = next.getOrigY() - p.getOrigY();
+ p.setOutDir(Utils.computeDirection(outX, outY));
+
+ if (p.isControlPoint())
+ {
+ setWeakPoint(p);
+ }
+ else if (p.getOutDir() == p.getInDir())
+ {
+ if (p.getOutDir() != DIR_NONE)
+ setWeakPoint(p);
+ else
+ {
+ int angleIn = Utils.atan(inY, inX);
+ int angleOut = Utils.atan(outY, outX);
+ int delta = Utils.angleDiff(angleIn, angleOut);
+ if (delta < 2 && delta > -2)
+ setWeakPoint(p);
+ }
+ }
+ else if (p.getInDir() == - p.getOutDir())
+ {
+ setWeakPoint(p);
+ }
+ }
+ computeInflectionPoints();
+ }
+
+ private void setWeakPoint(Point p)
+ {
+ p.setFlags((byte) (p.getFlags() | Point.FLAG_WEAK_INTERPOLATION));
+ }
+
+ /**
+ * Computes the inflection points for a glyph.
+ */
+ private void computeInflectionPoints()
+ {
+ // Do each contour separately.
+ contours : for (int c = 0; c < contours.length; c++)
+ {
+ Point point = contours[c];
+ Point first = point;
+ Point start = point;
+ Point end = point;
+ do
+ {
+ end = end.getNext();
+ if (end == first)
+ continue contours;
+ } while (end.getOrigX() == first.getOrigX()
+ && end.getOrigY() == first.getOrigY());
+
+ // Extend segment start whenever possible.
+ Point before = start;
+ int angleIn;
+ int angleSeg = Utils.atan(end.getOrigX() - start.getOrigX(),
+ end.getOrigY() - start.getOrigY());
+ do
+ {
+ do
+ {
+ start = before;
+ before = before.getPrev();
+ if (before == first)
+ continue contours;
+ } while (before.getOrigX() == start.getOrigX()
+ && before.getOrigY() == start.getOrigY());
+ angleIn = Utils.atan(start.getOrigX() - before.getOrigX(),
+ start.getOrigY() - before.getOrigY());
+ } while (angleIn == angleSeg);
+
+ first = start;
+ int diffIn = Utils.angleDiff(angleIn, angleSeg);
+ // Now, process all segments in the contour.
+ Point after;
+ boolean finished = false;
+ int angleOut, diffOut;
+ do
+ {
+ // First, extend the current segment's end whenever possible.
+ after = end;
+ do
+ {
+ do
+ {
+ end = after;
+ after = after.getNext();
+ if (after == first)
+ finished = true;
+ } while (end.getOrigX() == after.getOrigX()
+ && end.getOrigY() == after.getOrigY());
+ angleOut = Utils.atan(after.getOrigX() - end.getOrigX(),
+ after.getOrigY() - end.getOrigY());
+ } while (angleOut == angleSeg);
+ diffOut = Utils.angleDiff(angleSeg, angleOut);
+ if ((diffIn ^ diffOut) < 0)
+ {
+ // diffIn and diffOut have different signs, we have
+ // inflection points here.
+ do
+ {
+ start.addFlags(Point.FLAG_INFLECTION);
+ start = start.getNext();
+ } while (start != end);
+ start.addFlags(Point.FLAG_INFLECTION);
+ }
+ start = end;
+ end = after;
+ angleSeg = angleOut;
+ diffIn = diffOut;
+ } while (! finished);
+ }
+ }
+
+ boolean doHorizontal()
+ {
+ return (flags & FontDelegate.FLAG_NO_HINT_HORIZONTAL) == 0;
+ }
+
+ boolean doVertical()
+ {
+ return (flags & FontDelegate.FLAG_NO_HINT_VERTICAL) == 0;
+ }
+
+ void alignWeakPoints(int dim)
+ {
+ short touchFlag;
+ Point point;
+ // PASS 1 : Move segments to edge positions.
+ if (dim == DIMENSION_HORZ)
+ {
+ touchFlag = Point.FLAG_DONE_X;
+ for (int p = 0; p < numPoints; p++)
+ {
+ point = points[p];
+ point.setU(point.getX());
+ point.setV(point.getScaledX());
+ }
+ }
+ else
+ {
+ touchFlag = Point.FLAG_DONE_Y;
+ for (int p = 0; p < numPoints; p++)
+ {
+ point = points[p];
+ point.setU(point.getY());
+ point.setV(point.getScaledY());
+ }
+ }
+ point = points[0];
+ for (int c = 0; c < numContours; c++)
+ {
+ point = contours[c];
+ int idx = getPointIndex(point);
+ Point endPoint = point.getPrev();
+ int endIdx = getPointIndex(endPoint);
+ int firstIdx = idx;
+ while (idx <= endIdx
+ && (point.getFlags() & touchFlag) == 0)
+ {
+ idx++;
+ point = points[idx];
+ }
+ if (idx <= endIdx)
+ {
+ int firstTouched = idx;
+ int curTouched = idx;
+ idx++;
+ point = points[idx];
+ while (idx <= endIdx)
+ {
+ if ((point.getFlags() & touchFlag) != 0)
+ {
+ // We found two successive touch points. We interpolate
+ // all contour points between them.
+ iupInterp(curTouched + 1, idx - 1, curTouched, idx);
+ curTouched = idx;
+ }
+ idx++;
+ point = points[idx];
+ }
+ if (curTouched == firstTouched)
+ {
+ // This is a special case: Only one point was touched in the
+ // contour. We thus simply shift the whole contour.
+ iupShift(firstIdx, endIdx, curTouched);
+ }
+ else
+ {
+ // Now interpolate after the last touched point to the end
+ // of the contour.
+ iupInterp(curTouched + 1, endIdx, curTouched, firstTouched);
+ // If the first contour point isn't touched, interpolate
+ // from the contour start to the first touched point.
+ if (firstTouched > 0)
+ {
+ iupInterp(firstIdx, firstTouched - 1, curTouched,
+ firstTouched);
+ }
+ }
+ }
+ }
+ // Now store the values back.
+ if (dim == DIMENSION_HORZ)
+ {
+ for (int p = 0; p < numPoints; p++)
+ {
+ point = points[p];
+ point.setX(point.getU());
+ }
+ }
+ else
+ {
+ for (int p = 0; p < numPoints; p++)
+ {
+ point = points[p];
+ point.setY(point.getU());
+ }
+ }
+ }
+
+ private void iupShift(int p1, int p2, int ref)
+ {
+ int delta = points[ref].getU() - points[ref].getV();
+ for (int p = p1; p < ref; p++)
+ {
+ points[p].setU(points[p].getV() + delta);
+ }
+ for (int p = ref + 1; p <= p2; p++)
+ {
+ points[p].setU(points[p].getV() + delta);
+ }
+ }
+
+ private void iupInterp(int p1, int p2, int ref1, int ref2)
+ {
+ int v1 = points[ref1].getV();
+ int v2 = points[ref2].getV();
+ int d1 = points[ref1].getU() - v1;
+ int d2 = points[ref2].getU() - v2;
+ if (p1 > p2)
+ return;
+ if (v1 == v2)
+ {
+ for (int p = p1; p <= p2; p++)
+ {
+ int u = points[p].getV();
+ if (u <= v1)
+ u += d1;
+ else
+ u += d2;
+ points[p].setU(u);
+ }
+ }
+ else if (v1 < v2)
+ {
+ for (int p = p1; p <= p2; p++)
+ {
+ int u = points[p].getV();
+ if (u <= v1)
+ u += d1;
+ else if (u >= v2)
+ u += d2;
+ else
+ {
+ u = points[ref1].getU() + Utils.mulDiv(u - v1,
+ points[ref2].getU()
+ - points[ref1].getU(),
+ v2 - v1);
+ }
+ points[p].setU(u);
+ }
+ }
+ else
+ {
+ for (int p = p1; p <= p2; p++)
+ {
+ int u = points[p].getV();
+ if (u <= v2)
+ u += d2;
+ else if (u >= v1)
+ u += d1;
+ else
+ {
+ u = points[ref1].getU() + Utils.mulDiv(u - v1,
+ points[ref2].getU()
+ - points[ref1].getU(),
+ v2 - v1);
+ }
+ points[p].setU(u);
+ }
+ }
+ }
+
+ void alignStrongPoints(int dim)
+ {
+ AxisHints ax = axis[dim];
+ Edge[] edges = ax.edges;
+ int numEdges = ax.numEdges;
+ short touchFlag;
+ if (dim == DIMENSION_HORZ)
+ touchFlag = Point.FLAG_DONE_X;
+ else
+ touchFlag = Point.FLAG_DONE_Y;
+
+ if (numEdges > 0)
+ {
+ for (int p = 0; p < numPoints; p++)
+ {
+ Point point = points[p];
+ if ((point.getFlags() & touchFlag) != 0)
+ continue;
+ // If this point is a candidate for weak interpolation, we
+ // interpolate it after all strong points have been processed.
+ if ((point.getFlags() & Point.FLAG_WEAK_INTERPOLATION) != 0
+ && (point.getFlags() & Point.FLAG_INFLECTION) == 0)
+ continue;
+
+ int u, ou, fu, delta;
+ if (dim == DIMENSION_VERT)
+ {
+ u = point.getOrigY();
+ ou = point.getScaledY();
+ }
+ else
+ {
+ u = point.getOrigX();
+ ou = point.getScaledX();
+ }
+ fu = u;
+ // Is the point before the first edge?
+ Edge edge = edges[0];
+ // Inversed vertical dimension.
+ delta = edge.fpos - u;
+ if (delta >= 0)
+ {
+ u = edge.pos - (edge.opos - ou);
+ storePoint(point, u, dim, touchFlag);
+ }
+ else
+ {
+ // Is the point after the last edge?
+ edge = edges[numEdges - 1];
+ delta = u - edge.fpos;
+ if (delta >= 0)
+ {
+ u = edge.pos + (ou - edge.opos);
+ storePoint(point, u, dim, touchFlag);
+ }
+ else
+ {
+ // Find enclosing edges.
+ int min = 0;
+ int max = numEdges;
+ int mid, fpos;
+ boolean found = false;
+ while (min < max)
+ {
+ mid = (max + min) / 2;
+ edge = edges[mid];
+ fpos = edge.fpos;
+ if (u < fpos)
+ max = mid;
+ else if (u > fpos)
+ min = mid + 1;
+ else
+ {
+ // Directly on the edge.
+ u = edge.pos;
+ storePoint(point, u, dim, touchFlag);
+ found = true;
+ break;
+ }
+ }
+ if (! found)
+ {
+ Edge before = edges[min - 1];
+ Edge after = edges[min];
+ if (before.scale == 0)
+ {
+ before.scale = Fixed.div16(after.pos - before.pos,
+ after.fpos - before.fpos);
+ }
+ u = before.pos + Fixed.mul16(fu - before.fpos,
+ before.scale);
+ }
+ storePoint(point, u, dim, touchFlag);
+ }
+ }
+ }
+ }
+ }
+
+ private void storePoint(Point p, int u, int dim, short touchFlag)
+ {
+ if (dim == DIMENSION_HORZ)
+ p.setX(u);
+ else
+ p.setY(u);
+ p.addFlags(touchFlag);
+ }
+
+ void alignEdgePoints(int dim)
+ {
+ AxisHints ax = axis[dim];
+ Edge[] edges = ax.edges;
+ int numEdges = ax.numEdges;
+ for (int e = 0; e < numEdges; e++)
+ {
+ Edge edge = edges[e];
+ Segment seg = edge.first;
+ do
+ {
+ Point point = seg.first;
+ while (true)
+ {
+ if (dim == DIMENSION_HORZ)
+ {
+ point.setX(edge.pos);
+ point.addFlags(Point.FLAG_DONE_X);
+ }
+ else
+ {
+ point.setY(edge.pos);
+ point.addFlags(Point.FLAG_DONE_Y);
+ }
+ if (point == seg.last)
+ break;
+ point = point.getNext();
+ }
+ seg = seg.edgeNext;
+ } while (seg != edge.first);
+ }
+ }
+
+ private int getPointIndex(Point p)
+ {
+ int idx = -1;
+ for (int i = 0; i < numPoints; i++)
+ {
+ if (p == points[i])
+ {
+ idx = i;
+ break;
+ }
+ }
+ return idx;
+ }
+
+ public boolean doAlignEdgePoints()
+ {
+ return (flags & FontDelegate.FLAG_NO_HINT_EDGE_POINTS) == 0;
+ }
+
+ public boolean doAlignStrongPoints()
+ {
+ return (flags & FontDelegate.FLAG_NO_HINT_STRONG_POINTS) == 0;
+ }
+
+ public boolean doAlignWeakPoints()
+ {
+ return (flags & FontDelegate.FLAG_NO_HINT_WEAK_POINTS) == 0;
+ }
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/HintScaler.java b/libjava/classpath/gnu/java/awt/font/autofit/HintScaler.java
new file mode 100644
index 000000000..01276b4db
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/HintScaler.java
@@ -0,0 +1,53 @@
+/* Scaler.java -- FIXME: briefly describe file purpose
+ 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.java.awt.font.autofit;
+
+import gnu.java.awt.font.opentype.OpenTypeFont;
+
+class HintScaler
+{
+
+ int xScale;
+ int xDelta;
+ int yScale;
+ int yDelta;
+ OpenTypeFont face;
+ int renderMode;
+
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/Latin.java b/libjava/classpath/gnu/java/awt/font/autofit/Latin.java
new file mode 100644
index 000000000..c132c2cdc
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/Latin.java
@@ -0,0 +1,1363 @@
+/* Latin.java -- Latin specific glyph handling
+ 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.java.awt.font.autofit;
+
+import java.awt.geom.AffineTransform;
+import java.util.HashSet;
+
+import gnu.java.awt.font.opentype.OpenTypeFont;
+import gnu.java.awt.font.opentype.truetype.Fixed;
+import gnu.java.awt.font.opentype.truetype.Point;
+import gnu.java.awt.font.opentype.truetype.Zone;
+
+/**
+ * Implements Latin specific glyph handling.
+ */
+class Latin
+ implements Script, Constants
+{
+
+ static final int MAX_WIDTHS = 16;
+
+ private final static int MAX_TEST_CHARS = 12;
+
+ /**
+ * The types of the 6 blue zones.
+ */
+ private static final int CAPITAL_TOP = 0;
+ private static final int CAPITAL_BOTTOM = 1;
+ private static final int SMALL_F_TOP = 2;
+ private static final int SMALL_TOP = 3;
+ private static final int SMALL_BOTTOM = 4;
+ private static final int SMALL_MINOR = 5;
+ static final int BLUE_MAX = 6;
+
+ /**
+ * The test chars for the blue zones.
+ *
+ * @see #initBlues(LatinMetrics, OpenTypeFont)
+ */
+ private static final String[] TEST_CHARS =
+ new String[]{"THEZOCQS", "HEZLOCUS", "fijkdbh",
+ "xzroesc", "xzroesc", "pqgjy"};
+
+ public void applyHints(GlyphHints hints, Zone outline, ScriptMetrics metrics)
+ {
+ hints.reload(outline);
+ hints.rescale(metrics);
+ if (hints.doHorizontal())
+ {
+ detectFeatures(hints, DIMENSION_HORZ);
+ }
+ if (hints.doVertical())
+ {
+ detectFeatures(hints, DIMENSION_VERT);
+ computeBlueEdges(hints, (LatinMetrics) metrics);
+ }
+ // Grid-fit the outline.
+ for (int dim = 0; dim < DIMENSION_MAX; dim++)
+ {
+ if (dim == DIMENSION_HORZ && hints.doHorizontal()
+ || dim == DIMENSION_VERT && hints.doVertical())
+ {
+ hintEdges(hints, dim);
+ if (hints.doAlignEdgePoints())
+ hints.alignEdgePoints(dim);
+ if (hints.doAlignStrongPoints())
+ hints.alignStrongPoints(dim);
+ if (hints.doAlignWeakPoints())
+ hints.alignWeakPoints(dim);
+
+ }
+ }
+ // FreeType does a save call here. I guess that's not needed as we operate
+ // on the live glyph data anyway.
+ }
+
+ private void hintEdges(GlyphHints hints, int dim)
+ {
+ AxisHints axis = hints.axis[dim];
+ Edge[] edges = axis.edges;
+ int numEdges = axis.numEdges;
+ Edge anchor = null;
+ int hasSerifs = 0;
+
+ // We begin by aligning all stems relative to the blue zone if
+ // needed -- that's only for horizontal edges.
+ if (dim == DIMENSION_VERT)
+ {
+ for (int e = 0; e < numEdges; e++)
+ {
+ Edge edge = edges[e];
+ if ((edge.flags & Segment.FLAG_EDGE_DONE) != 0)
+ continue;
+
+ Width blue = edge.blueEdge;
+ Edge edge1 = null;
+ Edge edge2 = edge.link;
+ if (blue != null)
+ {
+ edge1 = edge;
+ }
+ else if (edge2 != null && edge2.blueEdge != null)
+ {
+ blue = edge2.blueEdge;
+ edge1 = edge2;
+ edge2 = edge;
+ }
+ if (edge1 == null)
+ continue;
+
+ edge1.pos = blue.fit;
+ edge1.flags |= Segment.FLAG_EDGE_DONE;
+
+ if (edge2 != null && edge2.blueEdge == null)
+ {
+ alignLinkedEdge(hints, dim, edge1, edge2);
+ edge2.flags |= Segment.FLAG_EDGE_DONE;
+ }
+ if (anchor == null)
+ anchor = edge;
+ }
+ }
+
+ // Now we will align all stem edges, trying to maintain the
+ // relative order of stems in the glyph.
+ for (int e = 0; e < numEdges; e++)
+ {
+ Edge edge = edges[e];
+ if ((edge.flags & Segment.FLAG_EDGE_DONE) != 0)
+ continue;
+ Edge edge2 = edge.link;
+ if (edge2 == null)
+ {
+ hasSerifs++;
+ continue;
+ }
+ // Now align the stem.
+ // This should not happen, but it's better to be safe.
+ if (edge2.blueEdge != null || axis.getEdgeIndex(edge2) < e)
+ {
+ alignLinkedEdge(hints, dim, edge2, edge);
+ edge.flags |= Segment.FLAG_EDGE_DONE;
+ continue;
+ }
+
+ if (anchor == null)
+ {
+ int orgLen = edge2.opos - edge.opos;
+ int curLen = computeStemWidth(hints, dim, orgLen, edge.flags,
+ edge2.flags);
+ int uOff, dOff, orgCenter, curPos1, error1, error2;
+ if (curLen <= 64) // < 1 Pixel.
+ {
+ uOff = 32;
+ dOff = 32;
+ }
+ else
+ {
+ uOff = 38;
+ dOff = 26;
+ }
+ if (curLen < 96)
+ {
+ orgCenter = edge.opos + (orgLen >> 1);
+ curPos1 = Utils.pixRound(orgCenter);
+ error1 = orgCenter - (curPos1 - uOff);
+ if (error1 < 0)
+ error1 = -error1;
+ error2 = orgCenter - (curPos1 + dOff);
+ if (error2 < 0)
+ error2 = -error2;
+ if (error1 < error2)
+ {
+ curPos1 -= uOff;
+ }
+ else
+ {
+ curPos1 += dOff;
+ }
+ edge.pos = curPos1 - curLen / 2;
+ edge2.pos = curPos1 + curLen / 2;
+ }
+ else
+ {
+ edge.pos = Utils.pixRound(edge.opos);
+ }
+ anchor = edge;
+ edge.flags |= Segment.FLAG_EDGE_DONE;
+ alignLinkedEdge(hints, dim, edge, edge2);
+ }
+ else
+ {
+ int aDiff = edge.opos - anchor.opos;
+ int orgPos = anchor.pos + aDiff;
+ int orgLen = edge2.opos - edge.opos;
+ int orgCenter = orgPos + (orgLen >> 1);
+ int curLen = computeStemWidth(hints, dim, orgLen, edge.flags,
+ edge2.flags);
+ //System.err.println("stem width: " + curLen);
+ if (curLen < 96)
+ {
+ int uOff, dOff;
+ int curPos1 = Utils.pixRound(orgCenter);
+ if (curLen <= 64)
+ {
+ uOff = 32;
+ dOff = 32;
+ }
+ else
+ {
+ uOff = 38;
+ dOff = 26;
+ }
+ int delta1 = orgCenter - (curPos1 - uOff);
+ if (delta1 < 0)
+ delta1 = -delta1;
+ int delta2 = orgCenter - (curPos1 + dOff);
+ if (delta2 < 0)
+ delta2 = -delta2;
+ if (delta1 < delta2)
+ {
+ curPos1 -= uOff;
+ }
+ else
+ {
+ curPos1 += dOff;
+ }
+ edge.pos = curPos1 - curLen / 2;
+ edge2.pos = curPos1 + curLen / 2;
+ }
+ else
+ {
+ orgPos = anchor.pos + (edge.opos - anchor.opos);
+ orgLen = edge2.opos - edge.opos;
+ orgCenter = orgPos + (orgLen >> 1);
+ curLen = computeStemWidth(hints, dim, orgLen, edge.flags,
+ edge2.flags);
+ int curPos1 = Utils.pixRound(orgPos);
+ int delta1 = curPos1 + (curLen >> 1) - orgCenter;
+ if (delta1 < 0)
+ delta1 = -delta1;
+ int curPos2 = Utils.pixRound(orgPos + orgLen) - curLen;
+ int delta2 = curPos2 + (curLen >> 1) - orgCenter;
+ if (delta2 < 0)
+ delta2 = -delta2;
+ edge.pos = (delta1 < delta2) ? curPos1 : curPos2;
+ edge2.pos = edge.pos + curLen;
+ }
+ edge.flags |= Segment.FLAG_EDGE_DONE;
+ edge2.flags |= Segment.FLAG_EDGE_DONE;
+
+ if (e > 0 && edge.pos < edges[e - 1].pos)
+ {
+ edge.pos = edges[e - 1].pos;
+ }
+ }
+ }
+ // TODO: Implement the lowercase m symmetry thing.
+
+ // Now we hint the remaining edges (serifs and singles) in order
+ // to complete our processing.
+ if (hasSerifs > 0 || anchor == null)
+ {
+ for (int e = 0; e < numEdges; e++)
+ {
+ Edge edge = edges[e];
+ if ((edge.flags & Segment.FLAG_EDGE_DONE) != 0)
+ continue;
+ if (edge.serif != null)
+ {
+ alignSerifEdge(hints, edge.serif, edge);
+ }
+ else if (anchor == null)
+ {
+ edge.pos = Utils.pixRound(edge.opos);
+ anchor = edge;
+ }
+ else
+ {
+ edge.pos = anchor.pos
+ + Utils.pixRound(edge.opos - anchor.opos);
+ }
+ edge.flags |= Segment.FLAG_EDGE_DONE;
+
+ if (e > 0 && edge.pos < edges[e - 1].pos)
+ {
+ edge.pos = edges[e - 1].pos;
+ }
+ if (e + 1 < numEdges
+ && (edges[e + 1].flags & Segment.FLAG_EDGE_DONE) != 0
+ && edge.pos > edges[e + 1].pos)
+ {
+ edge.pos = edges[e + 1].pos;
+ }
+ }
+ }
+
+ // Debug: print all hinted edges.
+ // System.err.println("hinted edges: " );
+ // for (int i = 0; i < numEdges; i++)
+ // {
+ // System.err.println("edge#" + i + ": " + edges[i]);
+ // }
+ }
+
+ private void alignSerifEdge(GlyphHints hints, Edge base, Edge serif)
+ {
+ serif.pos = base.pos + (serif.opos - base.opos);
+ }
+
+ private int computeStemWidth(GlyphHints hints, int dim, int width,
+ int baseFlags, int stemFlags)
+ {
+ LatinMetrics metrics = (LatinMetrics) hints.metrics;
+ LatinAxis axis = metrics.axis[dim];
+ int dist = width;
+ int sign = 0;
+ boolean vertical = dim == DIMENSION_VERT;
+ if (! doStemAdjust(hints))
+ return width;
+ if (dist < 0)
+ {
+ dist = -width;
+ sign = 1;
+ }
+ if ((vertical && ! doVertSnap(hints)) || ! vertical && ! doHorzSnap(hints))
+ {
+ // Smooth hinting process. Very lightly quantize the stem width.
+ // Leave the widths of serifs alone.
+ if ((stemFlags & Segment.FLAG_EDGE_SERIF) != 0 && vertical
+ && dist < 3 * 64)
+ {
+ return doneWidth(dist, sign);
+ }
+ else if ((baseFlags & Segment.FLAG_EDGE_ROUND) != 0)
+ {
+ if (dist < 80)
+ dist = 64;
+ }
+ else if (dist < 56)
+ {
+ dist = 56;
+ }
+ if (axis.widthCount > 0)
+ {
+ int delta;
+ if (axis.widthCount > 0)
+ {
+ delta = dist - axis.widths[0].cur;
+ if (delta < 0)
+ {
+ delta = -delta;
+ }
+ if (delta < 40)
+ {
+ dist = axis.widths[0].cur;
+ if (dist < 48)
+ dist = 48;
+ return doneWidth(dist, sign);
+ }
+ }
+ if (dist < 3 * 64) // < 3 pixels.
+ {
+ delta = dist & 63;
+ dist &= -64;
+ if (delta < 10)
+ dist += delta;
+ else if (delta < 32)
+ dist += 10;
+ else if (delta < 54)
+ dist += 54;
+ else
+ dist += delta;
+
+ }
+ else
+ {
+ dist = (dist + 32) & ~63;
+ }
+ }
+ }
+ else
+ {
+ // Strong hinting process: Snap the stem width to integer pixels.
+ dist = snapWidth(axis.widths, axis.widthCount, dist);
+ if (vertical)
+ {
+ // In the case of vertical hinting, always round
+ // the stem heights to integer pixels.
+ if (dist >= 64)
+ dist = (dist + 16) & ~63;
+ else
+ dist = 64;
+ }
+ else
+ {
+ if (doMono(hints))
+ {
+ // Monochrome horizontal hinting: Snap widths to integer pixels
+ // with a different threshold.
+ if (dist < 64)
+ dist = 64;
+ else
+ dist = (dist + 32) & ~63;
+ }
+ else
+ {
+ // For anti-aliased hinting, we adopt a more subtle
+ // approach: We strengthen small stems, round those stems
+ // whose size is between 1 and 2 pixels to an integer,
+ // otherwise nothing.
+ if (dist < 48)
+ dist = (dist + 64) >> 1;
+ else if (dist < 128)
+ dist = (dist + 22) & ~63;
+ else
+ // Round otherwise to prevent color fringes in LCD mode.
+ dist = (dist + 32) & ~63;
+ }
+ }
+ }
+ return doneWidth(dist, sign);
+ }
+
+ private boolean doMono(GlyphHints hints)
+ {
+ return true;
+ }
+
+ private int snapWidth(Width[] widths, int count, int width)
+ {
+ int best = 64 + 32 + 2;
+ int reference = width;
+ for (int n = 0; n < count; n++)
+ {
+ int w = widths[n].cur;
+ int dist = width - w;
+ if (dist < 0)
+ dist = -dist;
+ if (dist < best)
+ {
+ best = dist;
+ reference = w;
+ }
+ }
+ int scaled = Utils.pixRound(reference);
+ if (width >= reference)
+ {
+ if (width < scaled + 48)
+ width = reference;
+ }
+ else
+ {
+ if (width > scaled + 48)
+ width = reference;
+ }
+ return width;
+ }
+
+ private int doneWidth(int w, int s)
+ {
+ if (s == 1)
+ w = -w;
+ return w;
+ }
+
+ private boolean doVertSnap(GlyphHints hints)
+ {
+ // TODO Auto-generated method stub
+ return true;
+ }
+
+ private boolean doHorzSnap(GlyphHints hints)
+ {
+ // TODO Auto-generated method stub
+ return true;
+ }
+
+ private boolean doStemAdjust(GlyphHints hints)
+ {
+ // TODO Auto-generated method stub
+ return true;
+ }
+
+ private void alignLinkedEdge(GlyphHints hints, int dim, Edge base, Edge stem)
+ {
+ int dist = stem.opos - base.opos;
+ int fitted = computeStemWidth(hints, dim, dist, base.flags, stem.flags);
+ stem.pos = base.pos + fitted;
+ }
+
+ public void doneMetrics(ScriptMetrics metrics)
+ {
+ // TODO Auto-generated method stub
+
+ }
+
+ /**
+ * Initializes the <code>hints</code> object.
+ *
+ * @param hints the hints to initialize
+ * @param metrics the metrics to use
+ */
+ public void initHints(GlyphHints hints, ScriptMetrics metrics)
+ {
+ hints.rescale(metrics);
+ LatinMetrics lm = (LatinMetrics) metrics;
+ hints.xScale = lm.axis[DIMENSION_HORZ].scale;
+ hints.xDelta = lm.axis[DIMENSION_HORZ].delta;
+ hints.yScale = lm.axis[DIMENSION_VERT].scale;
+ hints.yDelta = lm.axis[DIMENSION_VERT].delta;
+ // TODO: Set the scaler and other flags.
+ }
+
+ /**
+ * Initializes the script metrics.
+ *
+ * @param metrics the script metrics to initialize
+ * @param face the font
+ */
+ public void initMetrics(ScriptMetrics metrics, OpenTypeFont face)
+ {
+ assert metrics instanceof LatinMetrics;
+ LatinMetrics lm = (LatinMetrics) metrics;
+ lm.unitsPerEm = face.unitsPerEm;
+
+ // TODO: Check for latin charmap.
+
+ initWidths(lm, face, 'o');
+ initBlues(lm, face);
+ }
+
+ public void scaleMetrics(ScriptMetrics metrics, HintScaler scaler)
+ {
+ LatinMetrics lm = (LatinMetrics) metrics;
+ lm.scaler.renderMode = scaler.renderMode;
+ lm.scaler.face = scaler.face;
+ scaleMetricsDim(lm, scaler, DIMENSION_HORZ);
+ scaleMetricsDim(lm, scaler, DIMENSION_VERT);
+ }
+
+ private void scaleMetricsDim(LatinMetrics lm, HintScaler scaler, int dim)
+ {
+ int scale;
+ int delta;
+ if (dim == DIMENSION_HORZ)
+ {
+ scale = scaler.xScale;
+ delta = scaler.xDelta;
+ }
+ else
+ {
+ scale = scaler.yScale;
+ delta = scaler.yDelta;
+ }
+ LatinAxis axis = lm.axis[dim];
+ if (axis.orgScale == scale && axis.orgDelta == delta)
+ // No change, no need to adjust.
+ return;
+ axis.orgScale = scale;
+ axis.orgDelta = delta;
+
+ // Correct X and Y scale to optimize the alignment of the top small
+ // letters to the pixel grid.
+ LatinAxis axis2 = lm.axis[DIMENSION_VERT];
+ LatinBlue blue = null;
+// for (int nn = 0; nn < axis2.blueCount; nn++)
+// {
+// if ((axis2.blues[nn].flags & LatinBlue.FLAG_ADJUSTMENT) != 0)
+// {
+// blue = axis2.blues[nn];
+// break;
+// }
+// }
+// if (blue != null)
+// {
+// int scaled = Fixed.mul16(blue.shoot.org, scaler.yScale);
+// int fitted = Utils.pixRound(scaled);
+// if (scaled != fitted)
+// {
+// if (dim == DIMENSION_HORZ)
+// {
+// if (fitted < scaled)
+// {
+// scale -= scale / 50;
+// }
+// }
+// else
+// {
+// scale = Utils.mulDiv(scale, fitted, scaled);
+// }
+// }
+// }
+ axis.scale = scale;
+ axis.delta = delta;
+ if (dim == DIMENSION_HORZ)
+ {
+ lm.scaler.xScale = scale;
+ lm.scaler.xDelta = delta;
+ }
+ else
+ {
+ lm.scaler.yScale = scale;
+ lm.scaler.yDelta = delta;
+ }
+ // Scale the standard widths.
+ for (int nn = 0; nn < axis.widthCount; nn++)
+ {
+ Width w = axis.widths[nn];
+ w.cur = Fixed.mul16(w.org, scale);
+ w.fit = w.cur;
+ }
+ // Scale blue zones.
+ if (dim == DIMENSION_VERT)
+ {
+ for (int nn = 0; nn < axis.blueCount; nn++)
+ {
+ blue = axis.blues[nn];
+ blue.ref.cur = Fixed.mul16(blue.ref.org, scale) + delta;
+ blue.ref.fit = blue.ref.cur;
+ blue.shoot.cur = Fixed.mul16(blue.ref.org, scale) + delta;
+ blue.flags &= ~LatinBlue.FLAG_BLUE_ACTIVE;
+ // A blue zone is only active if it is less than 3/4 pixels tall.
+ int dist = Fixed.mul16(blue.ref.org - blue.shoot.org, scale);
+ if (dist <= 48 && dist >= -48)
+ {
+ int delta1 = blue.shoot.org - blue.ref.org;
+ int delta2 = delta1;
+ if (delta1 < 0)
+ delta2 = -delta2;
+ delta2 = Fixed.mul16(delta2, scale);
+ if (delta2 < 32)
+ delta2 = 0;
+ else if (delta2 < 64)
+ delta2 = 32 + (((delta2 - 32) + 16) & ~31);
+ else
+ delta2 = Utils.pixRound(delta2);
+ if (delta1 < 0)
+ delta2 = -delta2;
+ blue.ref.fit = Utils.pixRound(blue.ref.cur);
+ blue.shoot.fit = blue.ref.fit + delta2;
+ blue.flags |= LatinBlue.FLAG_BLUE_ACTIVE;
+ }
+ }
+ }
+ }
+
+ /**
+ * Determines the standard stem widths.
+ *
+ * @param metrics the metrics to use
+ * @param face the font face
+ * @param ch the character that is used for getting the widths
+ */
+ private void initWidths(LatinMetrics metrics, OpenTypeFont face, char ch)
+ {
+ GlyphHints hints = new GlyphHints();
+ metrics.axis[DIMENSION_HORZ].widthCount = 0;
+ metrics.axis[DIMENSION_VERT].widthCount = 0;
+ int glyphIndex = face.getGlyph(ch);
+ Zone outline = face.getRawGlyphOutline(glyphIndex, IDENTITY);
+ LatinMetrics dummy = new LatinMetrics();
+ HintScaler scaler = dummy.scaler;
+ dummy.unitsPerEm = metrics.unitsPerEm;
+ scaler.xScale = scaler.yScale = 10000;
+ scaler.xDelta = scaler.yDelta = 0;
+ scaler.face = face;
+ hints.rescale(dummy);
+ hints.reload(outline);
+ for (int dim = 0; dim < DIMENSION_MAX; dim++)
+ {
+ LatinAxis axis = metrics.axis[dim];
+ AxisHints axHints = hints.axis[dim];
+ int numWidths = 0;
+ computeSegments(hints, dim);
+ linkSegments(hints, dim);
+ Segment[] segs = axHints.segments;
+ HashSet<Segment> touched = new HashSet<Segment>();
+ for (int i = 0; i < segs.length; i++)
+ {
+ Segment seg = segs[i];
+ Segment link = seg.link;
+ if (link != null && link.link == seg && ! touched.contains(link))
+ {
+ int dist = Math.abs(seg.pos - link.pos);
+ if (numWidths < MAX_WIDTHS)
+ axis.widths[numWidths++] = new Width(dist);
+ }
+ touched.add(seg);
+ }
+ Utils.sort(numWidths, axis.widths);
+ axis.widthCount = numWidths;
+ }
+ for (int dim = 0; dim < DIMENSION_MAX; dim++)
+ {
+ LatinAxis axis = metrics.axis[dim];
+ int stdw = axis.widthCount > 0 ? axis.widths[0].org
+ : constant(metrics, 50);
+ axis.edgeDistanceTreshold= stdw / 5;
+ }
+ }
+
+ void linkSegments(GlyphHints hints, int dim)
+ {
+ AxisHints axis = hints.axis[dim];
+ Segment[] segments = axis.segments;
+ int numSegs = axis.numSegments;
+ int majorDir = axis.majorDir;
+ int lenThreshold = constant((LatinMetrics) hints.metrics, 8);
+ lenThreshold = Math.min(1, lenThreshold);
+ int lenScore = constant((LatinMetrics) hints.metrics, 3000);
+ for (int i1 = 0; i1 < numSegs; i1++)
+ {
+ Segment seg1 = segments[i1];
+ // The fake segments are introduced to hint the metrics.
+ // Never link them to anything.
+ if (seg1.first == seg1.last || seg1.dir != majorDir)
+ continue;
+ for (int i2 = 0; i2 < numSegs; i2++)
+ {
+ Segment seg2 = segments[i2];
+ if (seg2 != seg1 && seg1.dir + seg2.dir == 0)
+ {
+ int pos1 = seg1.pos;
+ int pos2 = seg2.pos;
+ // The vertical coords are swapped compared to how FT handles
+ // this.
+ int dist = dim == DIMENSION_VERT ? pos1 - pos2 : pos2 - pos1;
+ if (dist >= 0)
+ {
+ int min = seg1.minPos;
+ int max = seg1.maxPos;
+ int len, score;
+ if (min < seg2.minPos)
+ min = seg2.minPos;
+ if (max > seg2.maxPos)
+ max = seg2.maxPos;
+ len = max - min;
+ if (len > lenThreshold)
+ {
+ score = dist + lenScore / len;
+ if (score < seg1.score)
+ {
+ seg1.score = score;
+ seg1.link = seg2;
+ }
+ if (score < seg2.score)
+ {
+ seg2.score = score;
+ seg2.link = seg1;
+ }
+ }
+ }
+ }
+ }
+ }
+ for (int i1 = 0; i1 < numSegs; i1++)
+ {
+ Segment seg1 = segments[i1];
+ Segment seg2 = seg1.link;
+ if (seg2 != null)
+ {
+ seg2.numLinked++;
+ if (seg2.link != seg1)
+ {
+ seg1.link = null;
+ seg1.serif = seg2.link;
+ }
+ }
+ // Uncomment to show all segments.
+ // System.err.println("segment#" + i1 + ": " + seg1);
+ }
+ }
+
+ /**
+ * Initializes the blue zones of the font.
+ *
+ * @param metrics the metrics to use
+ * @param face the font face to analyze
+ */
+ private void initBlues(LatinMetrics metrics, OpenTypeFont face)
+ {
+ int[] flats = new int[MAX_TEST_CHARS];
+ int[] rounds = new int[MAX_TEST_CHARS];
+ int numFlats;
+ int numRounds;
+ LatinBlue blue;
+ LatinAxis axis = metrics.axis[DIMENSION_VERT];
+ // We compute the blues simply by loading each character in the test
+ // strings, then compute its topmost or bottommost points.
+ for (int bb = 0; bb < BLUE_MAX; bb++)
+ {
+ String p = TEST_CHARS[bb];
+ int blueRef;
+ int blueShoot;
+ numFlats = 0;
+ numRounds = 0;
+ for (int i = 0; i < p.length(); i++)
+ {
+ // Load the character.
+ int glyphIndex = face.getGlyph(p.charAt(i));
+ Zone glyph =
+ face.getRawGlyphOutline(glyphIndex, IDENTITY);
+
+ // Now compute the min and max points.
+ int numPoints = glyph.getSize() - 4; // 4 phantom points.
+ Point[] points = glyph.getPoints();
+ Point point = points[0];
+ int extremum = 0;
+ int index = 1;
+ if (isTopBlue(bb))
+ {
+ for (; index < numPoints; index++)
+ {
+ point = points[index];
+ // We have the vertical direction swapped. The higher
+ // points have smaller (negative) Y.
+ if (point.getOrigY() < points[extremum].getOrigY())
+ extremum = index;
+ }
+ }
+ else
+ {
+ for (; index < numPoints; index++)
+ {
+ point = points[index];
+ // We have the vertical direction swapped. The higher
+ // points have smaller (negative) Y.
+ if (point.getOrigY() > points[extremum].getOrigY())
+ extremum = index;
+ }
+ }
+ // Debug, prints out the maxima.
+ // System.err.println("extremum for " + bb + " / "+ p.charAt(i)
+ // + ": " + points[extremum]);
+
+ // Now determine if the point is part of a straight or round
+ // segment.
+ boolean round;
+ int idx = extremum;
+ int first, last, prev, next, end;
+ int dist;
+ last = -1;
+ first = 0;
+ for (int n = 0; n < glyph.getNumContours(); n++)
+ {
+ end = glyph.getContourEnd(n);
+ // System.err.println("contour end for " + n + ": " + end);
+ if (end >= idx)
+ {
+ last = end;
+ break;
+ }
+ first = end + 1;
+ }
+ // Should never happen.
+ assert last >= 0;
+
+ // Now look for the previous and next points that are not on the
+ // same Y coordinate. Threshold the 'closeness'.
+ prev = idx;
+ next = prev;
+ do
+ {
+ if (prev > first)
+ prev--;
+ else
+ prev = last;
+ dist = points[prev].getOrigY() - points[extremum].getOrigY();
+ if (dist < -5 || dist > 5)
+ break;
+ } while (prev != idx);
+ do
+ {
+ if (next < last)
+ next++;
+ else
+ next = first;
+ dist = points[next].getOrigY() - points[extremum].getOrigY();
+ if (dist < -5 || dist > 5)
+ break;
+ } while (next != idx);
+ round = points[prev].isControlPoint()
+ || points[next].isControlPoint();
+
+ if (round)
+ {
+ rounds[numRounds++] = points[extremum].getOrigY();
+ // System.err.println("new round extremum: " + bb + ": "
+ // + points[extremum].getOrigY());
+ }
+ else
+ {
+ flats[numFlats++] = points[extremum].getOrigY();
+ // System.err.println("new flat extremum: " + bb + ": "
+ // + points[extremum].getOrigY());
+ }
+ }
+ // We have computed the contents of the rounds and flats tables.
+ // Now determine the reference and overshoot position of the blues --
+ // we simply take the median after a simple sort.
+ Utils.sort(numRounds, rounds);
+ Utils.sort(numFlats, flats);
+ blue = axis.blues[axis.blueCount] = new LatinBlue();
+ axis.blueCount++;
+ if (numFlats == 0)
+ {
+ blue.ref = blue.shoot = new Width(rounds[numRounds / 2]);
+ }
+ else if (numRounds == 0)
+ {
+ blue.ref = blue.shoot = new Width(flats[numFlats / 2]);
+ }
+ else
+ {
+ blue.ref = new Width(flats[numFlats / 2]);
+ blue.shoot = new Width(rounds[numRounds / 2]);
+ }
+ // There are sometimes problems: if the overshoot position of top
+ // zones is under its reference position, or the opposite for bottom
+ // zones. We must check everything there and correct problems.
+ if (blue.shoot != blue.ref)
+ {
+ int ref = blue.ref.org;
+ int shoot = blue.shoot.org;
+ // Inversed vertical coordinates!
+ boolean overRef = shoot < ref;
+ if (isTopBlue(bb) ^ overRef)
+ {
+ blue.shoot = blue.ref = new Width((shoot + ref) / 2);
+ }
+ }
+ blue.flags = 0;
+ if (isTopBlue(bb))
+ blue.flags |= LatinBlue.FLAG_TOP;
+ // The following flag is used later to adjust y and x scales in
+ // order to optimize the pixel grid alignment of the top small
+ // letters.
+ if (bb == SMALL_TOP)
+ {
+ blue.flags |= LatinBlue.FLAG_ADJUSTMENT;
+ }
+ // Debug: print out the blue zones.
+ // System.err.println("blue zone #" + bb + ": " + blue);
+ }
+ }
+
+ private static final AffineTransform IDENTITY = new AffineTransform();
+
+ private int constant(LatinMetrics metrics, int c)
+ {
+ return c * (metrics.unitsPerEm / 2048);
+ }
+
+ private void computeSegments(GlyphHints hints, int dim)
+ {
+ Point[] points = hints.points;
+ if (dim == DIMENSION_HORZ)
+ {
+ for (int i = 0; i < hints.numPoints; i++)
+ {
+ points[i].setU(points[i].getOrigX());
+ points[i].setV(points[i].getOrigY());
+ }
+ }
+ else
+ {
+ for (int i = 0; i < hints.numPoints; i++)
+ {
+ points[i].setU(points[i].getOrigY());
+ points[i].setV(points[i].getOrigX());
+ }
+ }
+ // Now look at each contour.
+ AxisHints axis = hints.axis[dim];
+ int majorDir = Math.abs(axis.majorDir);
+ int segmentDir = majorDir;
+ Point[] contours = hints.contours;
+ int numContours = hints.numContours;
+ Segment segment = null;
+ for (int i = 0; i < numContours; i++)
+ {
+ int minPos = 32000;
+ int maxPos = -32000;
+
+ Point point = contours[i];
+ Point last = point.getPrev();
+ if (point == last) // Skip singletons.
+ continue;
+ if (Math.abs(last.getOutDir()) == majorDir
+ && Math.abs(point.getOutDir()) == majorDir)
+ {
+ // We are already on an edge. Locate its start.
+ last = point;
+ while (true)
+ {
+ point = point.getPrev();
+ if (Math.abs(point.getOutDir()) != majorDir)
+ {
+ point = point.getNext();
+ break;
+ }
+ if (point == last)
+ break;
+ }
+ }
+ last = point;
+ boolean passed = false;
+ boolean onEdge = false;
+ while (true)
+ {
+ int u, v;
+ if (onEdge)
+ {
+ u = point.getU();
+ if (u < minPos)
+ minPos = u;
+ if (u > maxPos)
+ maxPos = u;
+ if (point.getOutDir() != segmentDir || point == last)
+ {
+ // Leaving an edge. Record new segment.
+ segment.last = point;
+ // (minPos + maxPos) / 2.
+ segment.pos = (minPos + maxPos) >> 1;
+ if (segment.first.isControlPoint()
+ || point.isControlPoint())
+ segment.flags |= Segment.FLAG_EDGE_ROUND;
+ minPos = maxPos = point.getV();
+ v = segment.first.getV();
+ if (v < minPos)
+ minPos = v;
+ if (v > maxPos)
+ maxPos = v;
+ segment.minPos = minPos;
+ segment.maxPos = maxPos;
+ onEdge = false;
+ segment = null;
+ }
+ }
+ if (point == last)
+ {
+ if (passed)
+ break;
+ passed = true;
+ }
+ if (! onEdge && Math.abs(point.getOutDir()) == majorDir)
+ {
+ // This is the start of a new segment.
+ segmentDir = point.getOutDir();
+ segment = axis.newSegment();
+ segment.dir = segmentDir;
+ segment.flags = Segment.FLAG_EDGE_NORMAL;
+ minPos = maxPos = point.getU();
+ segment.first = point;
+ segment.last = point;
+ segment.contour = contours[i];
+ segment.score = 32000;
+ segment.len = 0;
+ segment.link = null;
+ onEdge = true;
+ }
+ point = point.getNext();
+ }
+ }
+
+ }
+
+ private boolean isTopBlue(int b)
+ {
+ return b == CAPITAL_TOP || b == SMALL_F_TOP || b == SMALL_TOP;
+ }
+
+ private void detectFeatures(GlyphHints hints, int dim)
+ {
+ computeSegments(hints, dim);
+ linkSegments(hints, dim);
+ computeEdges(hints, dim);
+ }
+
+ private void computeEdges(GlyphHints hints, int dim)
+ {
+ AxisHints axis = hints.axis[dim];
+ LatinAxis laxis = ((LatinMetrics) hints.metrics).axis[dim];
+ Segment[] segments = axis.segments;
+ int numSegments = axis.numSegments;
+ Segment seg;
+ int upDir;
+ int scale;
+ int edgeDistanceThreshold;
+ axis.numEdges = 0;
+ scale = dim == DIMENSION_HORZ ? hints.xScale : hints.yScale;
+ upDir = dim == DIMENSION_HORZ ? DIR_UP : DIR_RIGHT;
+
+ // We will begin by generating a sorted table of edges for the
+ // current direction. To do so, we simply scan each segment and try
+ // to find an edge in our table that corresponds to its position.
+ //
+ // If no edge is found, we create one and insert a new edge in the
+ // sorted table. Otherwise, we simply add the segment to the egde's
+ // list which will be processed in the second step to compute the
+ // edge's properties.
+ //
+ // Note that the edge table is sorted along the segment/edge
+ // position.
+
+ edgeDistanceThreshold = Fixed.mul16(laxis.edgeDistanceTreshold, scale);
+ if (edgeDistanceThreshold > 64 / 4)
+ edgeDistanceThreshold = 64 / 4;
+ edgeDistanceThreshold = Fixed.div16(edgeDistanceThreshold, scale);
+ for (int i = 0; i < numSegments; i++)
+ {
+ seg = segments[i];
+ Edge found = null;
+ for (int ee = 0; ee < axis.numEdges; ee++)
+ {
+ Edge edge = axis.edges[ee];
+ int dist = seg.pos - edge.fpos;
+ if (dist < 0)
+ dist = -dist;
+ if (dist < edgeDistanceThreshold)
+ {
+ found = edge;
+ break;
+ }
+ }
+ if (found == null)
+ {
+ // Insert new edge in the list and sort according to
+ // the position.
+ Edge edge = axis.newEdge(seg.pos);
+ edge.first = seg;
+ edge.last = seg;
+ edge.fpos = seg.pos;
+ edge.opos = edge.pos = Fixed.mul16(seg.pos, scale);
+ seg.edgeNext = seg;
+ seg.edge = edge;
+ }
+ else
+ {
+ seg.edgeNext = found.first;
+ found.last.edgeNext = seg;
+ found.last = seg;
+ seg.edge = found;
+ }
+ }
+ // Good. We will now compute each edge's properties according to
+ // segments found on its position. Basically these are:
+ // - Edge's main direction.
+ // - Stem edge, serif edge, or both (which defaults to stem edge).
+ // - Rounded edge, straight or both (which defaults to straight).
+ // - Link for edge.
+
+ // Now, compute each edge properties.
+ for (int e = 0; e < axis.numEdges; e++)
+ {
+ Edge edge = axis.edges[e];
+ // Does it contain round segments?
+ int isRound = 0;
+ // Does it contain straight segments?
+ int isStraight = 0;
+ // Number of upward segments.
+ int ups = 0;
+ // Number of downward segments.
+ int downs = 0;
+
+ seg = edge.first;
+ do
+ {
+ // Check for roundness of segment.
+ if ((seg.flags & Segment.FLAG_EDGE_ROUND) != 0)
+ isRound++;
+ else
+ isStraight++;
+
+ // Check for segment direction.
+ if (seg.dir == upDir)
+ ups += seg.maxPos - seg.minPos;
+ else
+ downs += seg.maxPos - seg.minPos;
+
+ // Check for links. If seg.serif is set, then seg.link must
+ // be ignored.
+ boolean isSerif = seg.serif != null && seg.serif.edge != edge;
+ if (seg.link != null || isSerif)
+ {
+ Edge edge2 = edge.link;
+ Segment seg2 = seg.link;
+ if (isSerif)
+ {
+ seg2 = seg.serif;
+ edge2 = edge.serif;
+ }
+ if (edge2 != null)
+ {
+ int edgeDelta = edge.fpos - edge2.fpos;
+ if (edgeDelta < 0)
+ edgeDelta = -edgeDelta;
+ int segDelta = seg.pos - seg2.pos;
+ if (segDelta < 0)
+ segDelta = -segDelta;
+ if (segDelta < edgeDelta)
+ edge2 = seg2.edge;
+ }
+ else
+ {
+ edge2 = seg2.edge;
+ }
+ if (isSerif)
+ {
+ edge.serif = edge2;
+ edge2.flags |= Segment.FLAG_EDGE_SERIF;
+ }
+ else
+ {
+ edge.link = edge2;
+ }
+ }
+ seg = seg.edgeNext;
+ } while (seg != edge.first);
+ edge.flags = Segment.FLAG_EDGE_NORMAL;
+ if (isRound > 0 && isRound > isStraight)
+ edge.flags |= Segment.FLAG_EDGE_ROUND;
+
+ // Set the edge's main direction.
+ edge.dir = DIR_NONE;
+ if (ups > downs)
+ edge.dir = upDir;
+ else if (ups < downs)
+ edge.dir = -upDir;
+ else if (ups == downs)
+ edge.dir = 0;
+
+ // Gets rid of serif if link is set. This gets rid of many
+ // unpleasant artifacts.
+ if (edge.serif != null && edge.link != null)
+ {
+ edge.serif = null;
+ }
+
+ // Debug: Print out all edges.
+ // System.err.println("edge# " + e + ": " + edge);
+ }
+ }
+
+ private void computeBlueEdges(GlyphHints hints, LatinMetrics metrics)
+ {
+ AxisHints axis = hints.axis[DIMENSION_VERT];
+ Edge[] edges = axis.edges;
+ int numEdges = axis.numEdges;
+ LatinAxis latin = metrics.axis[DIMENSION_VERT];
+ int scale = latin.scale;
+
+ // Compute which blue zones are active. I.e. have their scaled
+ // size < 3/4 pixels.
+
+ // For each horizontal edge search the blue zone that is closest.
+ for (int e = 0; e < numEdges; e++)
+ {
+ Edge edge = edges[e];
+ // System.err.println("checking edge: " + edge);
+ Width bestBlue = null;
+ int bestDist = Fixed.mul16(metrics.unitsPerEm / 40, scale);
+
+ if (bestDist > 64 / 2)
+ bestDist = 64 / 2;
+ for (int bb = 0; bb < BLUE_MAX; bb++)
+ {
+ LatinBlue blue = latin.blues[bb];
+ // System.err.println("checking blue: " + blue);
+ // Skip inactive blue zones, i.e. those that are too small.
+ if ((blue.flags & LatinBlue.FLAG_BLUE_ACTIVE) == 0)
+ continue;
+ // If it is a top zone, check for right edges. If it is a bottom
+ // zone, check for left edges.
+ boolean isTopBlue = (blue.flags & LatinBlue.FLAG_TOP) != 0;
+ boolean isMajorDir = edge.dir == axis.majorDir;
+
+ // If it is a top zone, the edge must be against the major
+ // direction. If it is a bottom zone it must be in the major
+ // direction.
+ if (isTopBlue ^ isMajorDir)
+ {
+ int dist = edge.fpos - blue.ref.org;
+ if (dist < 0)
+ dist = -dist;
+ dist = Fixed.mul16(dist, scale);
+ if (dist < bestDist)
+ {
+ bestDist = dist;
+ bestBlue = blue.ref;
+ }
+
+ // Now, compare it to the overshoot position if the edge is
+ // rounded, and if the edge is over the reference position of
+ // a top zone, or under the reference position of a bottom
+ // zone.
+ if ((edge.flags & Segment.FLAG_EDGE_ROUND) != 0 && dist != 0)
+ {
+ // Inversed vertical coordinates!
+ boolean isUnderRef = edge.fpos > blue.ref.org;
+ if (isTopBlue ^ isUnderRef)
+ {
+ blue = latin.blues[bb]; // Needed?
+ dist = edge.fpos - blue.shoot.org;
+ if (dist < 0)
+ dist = -dist;
+ dist = Fixed.mul16(dist, scale);
+ if (dist < bestDist)
+ {
+ bestDist = dist;
+ bestBlue = blue.shoot;
+ }
+ }
+ }
+
+ }
+ }
+ if (bestBlue != null)
+ {
+ edge.blueEdge = bestBlue;
+ // Debug: Print out the blue edges.
+ // System.err.println("blue edge for: " + edge + ": " + bestBlue);
+ }
+ }
+ }
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/LatinAxis.java b/libjava/classpath/gnu/java/awt/font/autofit/LatinAxis.java
new file mode 100644
index 000000000..9237d0ee5
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/LatinAxis.java
@@ -0,0 +1,62 @@
+/* LatinAxis.java -- Axis specific data
+ 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.java.awt.font.autofit;
+
+/**
+ * Some axis specific data.
+ */
+class LatinAxis
+{
+
+ int scale;
+ int delta;
+
+ int widthCount;
+ Width[] widths;
+ int edgeDistanceTreshold;
+ LatinBlue[] blues;
+ int blueCount;
+ int orgDelta;
+ int orgScale;
+ LatinAxis()
+ {
+ widths = new Width[Latin.MAX_WIDTHS];
+ blues = new LatinBlue[Latin.BLUE_MAX];
+ }
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/LatinBlue.java b/libjava/classpath/gnu/java/awt/font/autofit/LatinBlue.java
new file mode 100644
index 000000000..2cf68b75c
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/LatinBlue.java
@@ -0,0 +1,61 @@
+/* LatinBlue.java -- FIXME: briefly describe file purpose
+ 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.java.awt.font.autofit;
+
+import gnu.java.lang.CPStringBuilder;
+
+public class LatinBlue
+{
+ static final int FLAG_BLUE_ACTIVE = 1 << 0;
+ static final int FLAG_TOP = 1 << 1;
+ static final int FLAG_ADJUSTMENT = 1 << 2;
+ Width ref;
+ Width shoot;
+ int flags;
+ public String toString()
+ {
+ CPStringBuilder s = new CPStringBuilder();
+ s.append("[BlueZone]");
+ s.append(" ref: ");
+ s.append(ref.org);
+ s.append(", shoot: ");
+ s.append(shoot.org);
+ return s.toString();
+ }
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/LatinMetrics.java b/libjava/classpath/gnu/java/awt/font/autofit/LatinMetrics.java
new file mode 100644
index 000000000..33fc63ad4
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/LatinMetrics.java
@@ -0,0 +1,66 @@
+/* LatinMetrics.java -- Latin specific metrics data
+ 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.java.awt.font.autofit;
+
+import gnu.java.awt.font.opentype.OpenTypeFont;
+
+/**
+ * Latin specific metrics data.
+ */
+class LatinMetrics
+ extends ScriptMetrics
+{
+
+ LatinAxis[] axis;
+
+ int unitsPerEm;
+
+ LatinMetrics()
+ {
+ super();
+ axis = new LatinAxis[Constants.DIMENSION_MAX];
+ axis[Constants.DIMENSION_HORZ] = new LatinAxis();
+ axis[Constants.DIMENSION_VERT] = new LatinAxis();
+ }
+ LatinMetrics(OpenTypeFont face)
+ {
+ this();
+ unitsPerEm = face.unitsPerEm;
+ }
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/Script.java b/libjava/classpath/gnu/java/awt/font/autofit/Script.java
new file mode 100644
index 000000000..c223f0a26
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/Script.java
@@ -0,0 +1,62 @@
+/* Script.java -- Defines script specific interface to the autofitter
+ 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.java.awt.font.autofit;
+
+import gnu.java.awt.font.opentype.OpenTypeFont;
+import gnu.java.awt.font.opentype.truetype.Zone;
+
+/**
+ * Defines script specific methods for the auto fitter.
+ */
+interface Script
+{
+
+ /**
+ * Initializes the metrics.
+ */
+ void initMetrics(ScriptMetrics metrics, OpenTypeFont face);
+
+ void scaleMetrics(ScriptMetrics metrics , HintScaler scaler);
+
+ void doneMetrics(ScriptMetrics metrics);
+
+ void initHints(GlyphHints hints, ScriptMetrics metrics);
+
+ void applyHints(GlyphHints hints, Zone outline, ScriptMetrics metrics);
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/ScriptMetrics.java b/libjava/classpath/gnu/java/awt/font/autofit/ScriptMetrics.java
new file mode 100644
index 000000000..984a06dae
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/ScriptMetrics.java
@@ -0,0 +1,53 @@
+/* ScriptMetrics.java -- Script specific metrics data
+ 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.java.awt.font.autofit;
+
+/**
+ * Script specific metrics data.
+ */
+class ScriptMetrics
+{
+
+ Script script;
+ HintScaler scaler;
+ ScriptMetrics()
+ {
+ scaler = new HintScaler();
+ }
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/Segment.java b/libjava/classpath/gnu/java/awt/font/autofit/Segment.java
new file mode 100644
index 000000000..9f9da6792
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/Segment.java
@@ -0,0 +1,97 @@
+/* Segment.java -- FIXME: briefly describe file purpose
+ 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.java.awt.font.autofit;
+
+import gnu.java.awt.font.opentype.truetype.Point;
+
+import gnu.java.lang.CPStringBuilder;
+
+class Segment
+{
+
+ static final int FLAG_EDGE_NORMAL = 0;
+ static final int FLAG_EDGE_ROUND = 1;
+ static final int FLAG_EDGE_SERIF = 2;
+ static final int FLAG_EDGE_DONE = 4;
+ int dir;
+ int flags;
+ Segment link;
+ Segment serif;
+ int numLinked;
+ int pos;
+ Point first;
+ Point last;
+ Point contour;
+ int minPos;
+ int maxPos;
+ int score;
+ int len;
+ Segment edgeNext;
+ Edge edge;
+
+ public String toString()
+ {
+ CPStringBuilder s = new CPStringBuilder();
+ s.append("[Segment] id: ");
+ s.append(hashCode());
+ s.append(", len:");
+ s.append(len);
+ s.append(", round: ");
+ s.append(((flags & FLAG_EDGE_ROUND) != 0));
+ s.append(", dir: ");
+ s.append(dir);
+ s.append(", pos: ");
+ s.append(pos);
+ s.append(", minPos: ");
+ s.append(minPos);
+ s.append(", maxPos: ");
+ s.append(maxPos);
+ s.append(", first: ");
+ s.append(first);
+ s.append(", last: ");
+ s.append(last);
+ s.append(", contour: ");
+ s.append(contour);
+ s.append(", link: ");
+ s.append(link == null ? "null" : link.hashCode());
+ s.append(", serif: ");
+ s.append(serif == null ? "null" : serif.hashCode());
+ return s.toString();
+ }
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/Utils.java b/libjava/classpath/gnu/java/awt/font/autofit/Utils.java
new file mode 100644
index 000000000..ca45bb2e4
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/Utils.java
@@ -0,0 +1,255 @@
+/* Utils.java -- A collection of utility functions for the autofitter
+ 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.java.awt.font.autofit;
+
+import gnu.java.awt.font.opentype.truetype.Fixed;
+
+/**
+ * A collection of utility methods used all around the auto fitter.
+ */
+class Utils
+ implements Constants
+{
+
+ private static final int ATAN_BITS = 8;
+ private static final byte[] ATAN = new byte[]
+ {
+ 0, 0, 1, 1, 1, 2, 2, 2,
+ 3, 3, 3, 3, 4, 4, 4, 5,
+ 5, 5, 6, 6, 6, 7, 7, 7,
+ 8, 8, 8, 9, 9, 9, 10, 10,
+ 10, 10, 11, 11, 11, 12, 12, 12,
+ 13, 13, 13, 14, 14, 14, 14, 15,
+ 15, 15, 16, 16, 16, 17, 17, 17,
+ 18, 18, 18, 18, 19, 19, 19, 20,
+ 20, 20, 21, 21, 21, 21, 22, 22,
+ 22, 23, 23, 23, 24, 24, 24, 24,
+ 25, 25, 25, 26, 26, 26, 26, 27,
+ 27, 27, 28, 28, 28, 28, 29, 29,
+ 29, 30, 30, 30, 30, 31, 31, 31,
+ 31, 32, 32, 32, 33, 33, 33, 33,
+ 34, 34, 34, 34, 35, 35, 35, 35,
+ 36, 36, 36, 36, 37, 37, 37, 38,
+ 38, 38, 38, 39, 39, 39, 39, 40,
+ 40, 40, 40, 41, 41, 41, 41, 42,
+ 42, 42, 42, 42, 43, 43, 43, 43,
+ 44, 44, 44, 44, 45, 45, 45, 45,
+ 46, 46, 46, 46, 46, 47, 47, 47,
+ 47, 48, 48, 48, 48, 48, 49, 49,
+ 49, 49, 50, 50, 50, 50, 50, 51,
+ 51, 51, 51, 51, 52, 52, 52, 52,
+ 52, 53, 53, 53, 53, 53, 54, 54,
+ 54, 54, 54, 55, 55, 55, 55, 55,
+ 56, 56, 56, 56, 56, 57, 57, 57,
+ 57, 57, 57, 58, 58, 58, 58, 58,
+ 59, 59, 59, 59, 59, 59, 60, 60,
+ 60, 60, 60, 61, 61, 61, 61, 61,
+ 61, 62, 62, 62, 62, 62, 62, 63,
+ 63, 63, 63, 63, 63, 64, 64, 64
+ };
+
+ private static final int ANGLE_PI = 256;
+ private static final int ANGLE_PI2 = ANGLE_PI / 2;
+ private static final int ANGLE_PI4 = ANGLE_PI / 4;
+ private static final int ANGLE_2PI = ANGLE_PI * 2;
+
+ /**
+ * Computes the direction constant for the specified vector. The vector is
+ * given as differential value already.
+ *
+ * @param dx the x vector
+ * @param dy the y vector
+ *
+ * @return the direction of that vector, or DIR_NONE, if that vector is not
+ * approximating against one of the major axises
+ */
+ static int computeDirection(int dx, int dy)
+ {
+ int dir = DIR_NONE;
+ if (dx < 0)
+ {
+ if (dy < 0)
+ {
+ if (-dx * 12 < -dy)
+ dir = DIR_UP;
+ else if (-dy * 12 < -dx)
+ dir = DIR_LEFT;
+ }
+ else // dy >= 0 .
+ {
+ if (-dx * 12 < dy)
+ dir = DIR_DOWN;
+ else if (dy * 12 < -dx)
+ dir = DIR_LEFT;
+ }
+ }
+ else // dx >= 0 .
+ {
+ if (dy < 0)
+ {
+ if (dx * 12 < -dy)
+ dir = DIR_UP;
+ else if (-dy * 12 < dx)
+ dir = DIR_RIGHT;
+ }
+ else // dy >= 0 .
+ {
+ if (dx * 12 < dy)
+ dir = DIR_DOWN;
+ else if (dy * 12 < dx)
+ dir = DIR_RIGHT;
+ }
+ }
+ return dir;
+ }
+
+ public static int atan(int dx, int dy)
+ {
+ int angle;
+ // Trivial cases.
+ if (dy == 0)
+ {
+ angle = 0;
+ if (dx < 0)
+ angle = ANGLE_PI;
+ return angle;
+ }
+ else if (dx == 0)
+ {
+ angle = ANGLE_PI2;
+ if (dy < 0)
+ angle = - ANGLE_PI2;
+ return angle;
+ }
+
+
+ angle = 0;
+ if (dx < 0)
+ {
+ dx = -dx;
+ dy = -dy;
+ angle = ANGLE_PI;
+ }
+ if (dy < 0)
+ {
+ int tmp = dx;
+ dx = -dy;
+ dy = tmp;
+ angle -= ANGLE_PI2;
+ }
+ if (dx == 0 && dy == 0)
+ return 0;
+
+ if (dx == dy)
+ angle += ANGLE_PI4;
+ else if (dx > dy)
+ {
+ angle += ATAN[Fixed.div(dy, dx) << (ATAN_BITS - 6)];
+ }
+ else
+ {
+ angle += ANGLE_PI2 - ATAN[Fixed.div(dx, dy) << (ATAN_BITS - 6)];
+ }
+
+ if (angle > ANGLE_PI)
+ angle -= ANGLE_2PI;
+ return angle;
+ }
+
+ public static int angleDiff(int ang1, int ang2)
+ {
+ int delta = ang2 - ang1;
+ delta %= ANGLE_2PI;
+ if (delta < 0)
+ delta += ANGLE_2PI;
+ if (delta > ANGLE_PI)
+ delta -= ANGLE_2PI;
+ return delta;
+ }
+
+ static void sort(int num, int[] array)
+ {
+ int swap;
+ for (int i = 1; i < num; i++)
+ {
+ for (int j = i; j > 0; j--)
+ {
+ if (array[j] > array[j - 1])
+ break;
+ swap = array[j];
+ array[j] = array[j - 1];
+ array[j - 1] = swap;
+ }
+ }
+ }
+
+ static void sort(int num, Width[] array)
+ {
+ Width swap;
+ for (int i = 1; i < num; i++)
+ {
+ for (int j = 1; j > 0; j--)
+ {
+ if (array[j].org > array[j - 1].org)
+ break;
+ swap = array[j];
+ array[j] = array[j - 1];
+ array[j - 1] = swap;
+ }
+ }
+ }
+
+ static int pixRound(int val)
+ {
+ return pixFloor(val + 32);
+ }
+
+ static int pixFloor(int val)
+ {
+ return val & ~63;
+ }
+
+ public static int mulDiv(int a, int b, int c)
+ {
+ long prod = a * b;
+ long div = (prod / c);
+ return (int) div;
+ }
+
+}
diff --git a/libjava/classpath/gnu/java/awt/font/autofit/Width.java b/libjava/classpath/gnu/java/awt/font/autofit/Width.java
new file mode 100644
index 000000000..079f7b396
--- /dev/null
+++ b/libjava/classpath/gnu/java/awt/font/autofit/Width.java
@@ -0,0 +1,64 @@
+/* Width.java -- FIXME: briefly describe file purpose
+ 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.java.awt.font.autofit;
+
+import gnu.java.lang.CPStringBuilder;
+
+public class Width
+{
+ int org;
+ int cur;
+ int fit;
+ Width(int dist)
+ {
+ org = dist;
+ }
+
+ public String toString()
+ {
+ CPStringBuilder s = new CPStringBuilder();
+ s.append("[Width] org: ");
+ s.append(org);
+ s.append(", cur: ");
+ s.append(cur);
+ s.append(", fit: ");
+ s.append(fit);
+ return s.toString();
+ }
+}