author | xdono |
Wed, 02 Jul 2008 12:55:45 -0700 | |
changeset 715 | f16baef3a20e |
parent 438 | 2ae294e4518c |
child 3928 | be186a33df9b |
permissions | -rw-r--r-- |
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/* |
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* Copyright 2003-2008 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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package sun.font; |
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import java.awt.Font; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.GeneralPath; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import java.util.concurrent.ConcurrentHashMap; |
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public abstract class PhysicalStrike extends FontStrike { |
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static final long INTMASK = 0xffffffffL; |
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private PhysicalFont physicalFont; |
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protected CharToGlyphMapper mapper; |
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/* the ScalerContext is a native structure pre-filled with the |
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* info needed to setup the scaler for this strike. Its immutable |
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* so we set it up when the strike is created and free it when the |
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* strike is disposed. There's then no need to pass the info down |
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* separately to native on every call to the scaler. |
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*/ |
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protected long pScalerContext; |
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/* Only one of these two arrays is non-null. |
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* use the one that matches size of an address (32 or 64 bits) |
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*/ |
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protected long[] longGlyphImages; |
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protected int[] intGlyphImages; |
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/* Used by the TrueTypeFont subclass, which is the only client |
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* of getGlyphPoint(). The field and method are here because |
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* there is no TrueTypeFontStrike subclass. |
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* This map is a cache of the positions of points on the outline |
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* of a TrueType glyph. It is used by the OpenType layout engine |
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* to perform mark positioning. Without this cache every position |
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* request involves scaling and hinting the glyph outline potentially |
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* over and over again. |
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*/ |
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ConcurrentHashMap<Integer, Point2D.Float> glyphPointMapCache; |
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protected boolean getImageWithAdvance; |
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protected static final int complexTX = |
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AffineTransform.TYPE_FLIP | |
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AffineTransform.TYPE_GENERAL_SCALE | |
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AffineTransform.TYPE_GENERAL_ROTATION | |
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AffineTransform.TYPE_GENERAL_TRANSFORM | |
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AffineTransform.TYPE_QUADRANT_ROTATION; |
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PhysicalStrike(PhysicalFont physicalFont, FontStrikeDesc desc) { |
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this.physicalFont = physicalFont; |
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this.desc = desc; |
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} |
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protected PhysicalStrike() { |
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} |
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/* A number of methods are delegated by the strike to the scaler |
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* context which is a shared resource on a physical font. |
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*/ |
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public int getNumGlyphs() { |
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return physicalFont.getNumGlyphs(); |
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} |
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/* These 3 metrics methods below should be implemented to return |
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* values in user space. |
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*/ |
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StrikeMetrics getFontMetrics() { |
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if (strikeMetrics == null) { |
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strikeMetrics = |
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physicalFont.getFontMetrics(pScalerContext); |
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} |
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return strikeMetrics; |
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} |
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float getCodePointAdvance(int cp) { |
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return getGlyphAdvance(physicalFont.getMapper().charToGlyph(cp)); |
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} |
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Point2D.Float getCharMetrics(char ch) { |
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return getGlyphMetrics(physicalFont.getMapper().charToGlyph(ch)); |
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} |
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int getSlot0GlyphImagePtrs(int[] glyphCodes, long[] images, int len) { |
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return 0; |
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} |
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/* Used by the OpenType engine for mark positioning. |
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*/ |
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Point2D.Float getGlyphPoint(int glyphCode, int ptNumber) { |
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Point2D.Float gp = null; |
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6613529: Avoid duplicate object creation within JDK packages
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Integer ptKey = Integer.valueOf(glyphCode<<16|ptNumber); |
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if (glyphPointMapCache == null) { |
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synchronized (this) { |
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if (glyphPointMapCache == null) { |
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glyphPointMapCache = |
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new ConcurrentHashMap<Integer, Point2D.Float>(); |
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} |
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} |
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} else { |
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gp = glyphPointMapCache.get(ptKey); |
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} |
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if (gp == null) { |
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gp = (physicalFont.getGlyphPoint(pScalerContext, glyphCode, ptNumber)); |
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adjustPoint(gp); |
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glyphPointMapCache.put(ptKey, gp); |
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} |
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return gp; |
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} |
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protected void adjustPoint(Point2D.Float pt) { |
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} |
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} |