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Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit')
15 files changed, 3139 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/AutoHinter.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/AutoHinter.java new file mode 100644 index 000000000..b0420ab7a --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/AxisHints.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/AxisHints.java new file mode 100644 index 000000000..87f2abcc3 --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Constants.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Constants.java new file mode 100644 index 000000000..c5b90fa54 --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Edge.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Edge.java new file mode 100644 index 000000000..6420fa1cb --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/GlyphHints.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/GlyphHints.java new file mode 100644 index 000000000..72f07ed81 --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/HintScaler.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/HintScaler.java new file mode 100644 index 000000000..01276b4db --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Latin.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Latin.java new file mode 100644 index 000000000..8951e8b19 --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/LatinAxis.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/LatinAxis.java new file mode 100644 index 000000000..9237d0ee5 --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/LatinBlue.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/LatinBlue.java new file mode 100644 index 000000000..2cf68b75c --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/LatinMetrics.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/LatinMetrics.java new file mode 100644 index 000000000..33fc63ad4 --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Script.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Script.java new file mode 100644 index 000000000..c223f0a26 --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/ScriptMetrics.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/ScriptMetrics.java new file mode 100644 index 000000000..984a06dae --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Segment.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Segment.java new file mode 100644 index 000000000..9f9da6792 --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Utils.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Utils.java new file mode 100644 index 000000000..4df4705a8 --- /dev/null +++ b/gcc-4.4.3/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/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Width.java b/gcc-4.4.3/libjava/classpath/gnu/java/awt/font/autofit/Width.java new file mode 100644 index 000000000..079f7b396 --- /dev/null +++ b/gcc-4.4.3/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(); + } +} |