| /* | |
| * Copyright (c) 2003, 2020, Oracle and/or its affiliates. All rights reserved. | |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| * | |
| * This code is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License version 2 only, as | |
| * published by the Free Software Foundation. Oracle designates this | |
| * particular file as subject to the "Classpath" exception as provided | |
| * by Oracle in the LICENSE file that accompanied this code. | |
| * | |
| * This code 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 | |
| * version 2 for more details (a copy is included in the LICENSE file that | |
| * accompanied this code). | |
| * | |
| * You should have received a copy of the GNU General Public License version | |
| * 2 along with this work; if not, write to the Free Software Foundation, | |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| * | |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| * or visit www.oracle.com if you need additional information or have any | |
| * questions. | |
| */ | |
| package sun.font; | |
| import java.awt.geom.AffineTransform; | |
| import java.awt.geom.GeneralPath; | |
| import java.awt.geom.Point2D; | |
| import java.awt.Rectangle; | |
| import java.awt.geom.Rectangle2D; | |
| import java.awt.geom.NoninvertibleTransformException; | |
| class NativeStrike extends PhysicalStrike { | |
| NativeFont nativeFont; | |
| int numGlyphs; | |
| AffineTransform invertDevTx; | |
| AffineTransform fontTx; | |
| /* The following method prepares data used in obtaining FontMetrics. | |
| * This is the one case in which we allow anything other than a | |
| * simple scale to be used with a native font. We do this because in | |
| * order to ensure that clients get the overall metrics they expect | |
| * for a font whatever coordinate system (combination of font and | |
| * device transform) they use. | |
| * X11 fonts can only have a scale applied (remind : non-uniform?) | |
| * We strip out everything else and if necessary obtain an inverse | |
| * tx which we use to return metrics for the font in the transformed | |
| * coordinate system of the font. ie we pass X11 a simple scale, and | |
| * then apply the non-scale part of the font TX to that result. | |
| */ | |
| private int getNativePointSize() { | |
| /* Make a copy of the glyphTX in which we will store the | |
| * font transform, inverting the devTx if necessary | |
| */ | |
| double[] mat = new double[4]; | |
| desc.glyphTx.getMatrix(mat); | |
| fontTx = new AffineTransform(mat); | |
| /* Now work backwards to get the font transform */ | |
| if (!desc.devTx.isIdentity() && | |
| desc.devTx.getType() != AffineTransform.TYPE_TRANSLATION) { | |
| try { | |
| invertDevTx = desc.devTx.createInverse(); | |
| fontTx.concatenate(invertDevTx); | |
| } catch (NoninvertibleTransformException e) { | |
| e.printStackTrace(); | |
| } | |
| } | |
| /* At this point the fontTx may be a simple +ve scale, or it | |
| * may be something more complex. | |
| */ | |
| Point2D.Float pt = new Point2D.Float(1f,1f); | |
| fontTx.deltaTransform(pt, pt); | |
| double ptSize = Math.abs(pt.y); | |
| int ttype = fontTx.getType(); | |
| if ((ttype & ~AffineTransform.TYPE_UNIFORM_SCALE) != 0 || | |
| fontTx.getScaleY() <= 0) { | |
| /* We need to create an inverse transform that doesn't | |
| * include the point size (strictly the uniform scale) | |
| */ | |
| fontTx.scale(1/ptSize, 1/ptSize); | |
| } else { | |
| fontTx = null; // no need | |
| } | |
| return (int)ptSize; | |
| } | |
| NativeStrike(NativeFont nativeFont, FontStrikeDesc desc) { | |
| super(nativeFont, desc); | |
| this.nativeFont = nativeFont; | |
| /* If this is a delegate for bitmaps, we expect to have | |
| * been invoked only for a simple scale. If that's not | |
| * true, just bail | |
| */ | |
| if (nativeFont.isBitmapDelegate) { | |
| int ttype = desc.glyphTx.getType(); | |
| if ((ttype & ~AffineTransform.TYPE_UNIFORM_SCALE) != 0 || | |
| desc.glyphTx.getScaleX() <= 0) { | |
| numGlyphs = 0; | |
| return; | |
| } | |
| } | |
| int ptSize = getNativePointSize(); | |
| byte [] nameBytes = nativeFont.getPlatformNameBytes(ptSize); | |
| double scale = Math.abs(desc.devTx.getScaleX()); | |
| pScalerContext = createScalerContext(nameBytes, ptSize, scale); | |
| if (pScalerContext == 0L) { | |
| SunFontManager.getInstance().deRegisterBadFont(nativeFont); | |
| pScalerContext = createNullScalerContext(); | |
| numGlyphs = 0; | |
| if (FontUtilities.isLogging()) { | |
| FontUtilities.logSevere("Could not create native strike " + | |
| new String(nameBytes)); | |
| } | |
| return; | |
| } | |
| numGlyphs = nativeFont.getMapper().getNumGlyphs(); | |
| this.disposer = new NativeStrikeDisposer(nativeFont, desc, | |
| pScalerContext); | |
| } | |
| /* The asymmetry of the following methods is to help preserve | |
| * performance with minimal textual changes to the calling code | |
| * when moving initialisation of these arrays out of the constructor. | |
| * This may be restructured later when there's more room for changes | |
| */ | |
| private boolean usingIntGlyphImages() { | |
| if (intGlyphImages != null) { | |
| return true; | |
| } else if (longAddresses) { | |
| return false; | |
| } else { | |
| /* We could obtain minGlyphIndex and index relative to that | |
| * if we need to save space. | |
| */ | |
| int glyphLenArray = getMaxGlyph(pScalerContext); | |
| /* This shouldn't be necessary - its a precaution */ | |
| if (glyphLenArray < numGlyphs) { | |
| glyphLenArray = numGlyphs; | |
| } | |
| intGlyphImages = new int[glyphLenArray]; | |
| this.disposer.intGlyphImages = intGlyphImages; | |
| return true; | |
| } | |
| } | |
| private long[] getLongGlyphImages() { | |
| if (longGlyphImages == null && longAddresses) { | |
| /* We could obtain minGlyphIndex and index relative to that | |
| * if we need to save space. | |
| */ | |
| int glyphLenArray = getMaxGlyph(pScalerContext); | |
| /* This shouldn't be necessary - its a precaution */ | |
| if (glyphLenArray < numGlyphs) { | |
| glyphLenArray = numGlyphs; | |
| } | |
| longGlyphImages = new long[glyphLenArray]; | |
| this.disposer.longGlyphImages = longGlyphImages; | |
| } | |
| return longGlyphImages; | |
| } | |
| NativeStrike(NativeFont nativeFont, FontStrikeDesc desc, | |
| boolean nocache) { | |
| super(nativeFont, desc); | |
| this.nativeFont = nativeFont; | |
| int ptSize = (int)desc.glyphTx.getScaleY(); | |
| double scale = desc.devTx.getScaleX(); // uniform scale | |
| byte [] nameBytes = nativeFont.getPlatformNameBytes(ptSize); | |
| pScalerContext = createScalerContext(nameBytes, ptSize, scale); | |
| int numGlyphs = nativeFont.getMapper().getNumGlyphs(); | |
| } | |
| /* We want the native font to be responsible for reporting the | |
| * font metrics, even if it often delegates to another font. | |
| * The code here isn't yet implementing exactly that. If the glyph | |
| * transform was something native couldn't handle, there's no native | |
| * context from which to obtain metrics. Need to revise this to obtain | |
| * the metrics and transform them. But currently in such a case it | |
| * gets the metrics from a different font - its glyph delegate font. | |
| */ | |
| @Override | |
| StrikeMetrics getFontMetrics() { | |
| if (strikeMetrics == null) { | |
| if (pScalerContext != 0) { | |
| strikeMetrics = nativeFont.getFontMetrics(pScalerContext); | |
| } | |
| if (strikeMetrics != null && fontTx != null) { | |
| strikeMetrics.convertToUserSpace(fontTx); | |
| } | |
| } | |
| return strikeMetrics; | |
| } | |
| private native long createScalerContext(byte[] nameBytes, | |
| int ptSize, double scale); | |
| private native int getMaxGlyph(long pScalerContext); | |
| private native long createNullScalerContext(); | |
| @Override | |
| void getGlyphImagePtrs(int[] glyphCodes, long[] images,int len) { | |
| for (int i=0; i<len; i++) { | |
| images[i] = getGlyphImagePtr(glyphCodes[i]); | |
| } | |
| } | |
| @Override | |
| long getGlyphImagePtr(int glyphCode) { | |
| long glyphPtr; | |
| if (usingIntGlyphImages()) { | |
| if ((glyphPtr = intGlyphImages[glyphCode] & INTMASK) != 0L) { | |
| return glyphPtr; | |
| } else { | |
| glyphPtr = nativeFont.getGlyphImage(pScalerContext,glyphCode); | |
| /* Synchronize in case some other thread has updated this | |
| * cache entry already - unlikely but possible. | |
| */ | |
| synchronized (this) { | |
| if (intGlyphImages[glyphCode] == 0) { | |
| intGlyphImages[glyphCode] = (int)glyphPtr; | |
| return glyphPtr; | |
| } else { | |
| StrikeCache.freeIntPointer((int)glyphPtr); | |
| return intGlyphImages[glyphCode] & INTMASK; | |
| } | |
| } | |
| } | |
| } | |
| /* must be using long (8 byte) addresses */ | |
| else if ((glyphPtr = getLongGlyphImages()[glyphCode]) != 0L) { | |
| return glyphPtr; | |
| } else { | |
| glyphPtr = nativeFont.getGlyphImage(pScalerContext, glyphCode); | |
| synchronized (this) { | |
| if (longGlyphImages[glyphCode] == 0L) { | |
| longGlyphImages[glyphCode] = glyphPtr; | |
| return glyphPtr; | |
| } else { | |
| StrikeCache.freeLongPointer(glyphPtr); | |
| return longGlyphImages[glyphCode]; | |
| } | |
| } | |
| } | |
| } | |
| /* This is used when a FileFont uses the native names to create a | |
| * delegate NativeFont/Strike to get images from native. This is used | |
| * because Solaris TrueType fonts have external PCF bitmaps rather than | |
| * embedded bitmaps. This is really only important for CJK fonts as | |
| * for most scripts the external X11 bitmaps aren't much better - if | |
| * at all - than the results from hinting the outlines. | |
| */ | |
| long getGlyphImagePtrNoCache(int glyphCode) { | |
| return nativeFont.getGlyphImageNoDefault(pScalerContext, glyphCode); | |
| } | |
| @Override | |
| void getGlyphImageBounds(int glyphcode, Point2D.Float pt, | |
| Rectangle result) { | |
| } | |
| @Override | |
| Point2D.Float getGlyphMetrics(int glyphCode) { | |
| Point2D.Float pt = new Point2D.Float(getGlyphAdvance(glyphCode), 0f); | |
| return pt; | |
| } | |
| @Override | |
| float getGlyphAdvance(int glyphCode) { | |
| return nativeFont.getGlyphAdvance(pScalerContext, glyphCode); | |
| } | |
| @Override | |
| Rectangle2D.Float getGlyphOutlineBounds(int glyphCode) { | |
| return nativeFont.getGlyphOutlineBounds(pScalerContext, glyphCode); | |
| } | |
| @Override | |
| GeneralPath getGlyphOutline(int glyphCode, float x, float y) { | |
| return new GeneralPath(); | |
| } | |
| @Override | |
| GeneralPath getGlyphVectorOutline(int[] glyphs, float x, float y) { | |
| return new GeneralPath(); | |
| } | |
| } |