| /* |
| * Copyright (c) 2003, 2004, 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.getLogger() |
| .severe("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. |
| */ |
| 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(); |
| |
| void getGlyphImagePtrs(int[] glyphCodes, long[] images,int len) { |
| for (int i=0; i<len; i++) { |
| images[i] = getGlyphImagePtr(glyphCodes[i]); |
| } |
| } |
| |
| 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); |
| } |
| |
| void getGlyphImageBounds(int glyphcode, Point2D.Float pt, |
| Rectangle result) { |
| } |
| |
| Point2D.Float getGlyphMetrics(int glyphCode) { |
| Point2D.Float pt = new Point2D.Float(getGlyphAdvance(glyphCode), 0f); |
| return pt; |
| } |
| |
| float getGlyphAdvance(int glyphCode) { |
| return nativeFont.getGlyphAdvance(pScalerContext, glyphCode); |
| } |
| |
| Rectangle2D.Float getGlyphOutlineBounds(int glyphCode) { |
| return nativeFont.getGlyphOutlineBounds(pScalerContext, glyphCode); |
| } |
| |
| GeneralPath getGlyphOutline(int glyphCode, float x, float y) { |
| return new GeneralPath(); |
| } |
| |
| GeneralPath getGlyphVectorOutline(int[] glyphs, float x, float y) { |
| return new GeneralPath(); |
| } |
| |
| } |
| |
| /* Returned instead of a NativeStrike. |
| * It can intercept any request it wants, but mostly |
| * passes them on to its delegate strike. It is important that |
| * it override all the inherited FontStrike methods to delegate them |
| * appropriately. |
| */ |
| |
| class DelegateStrike extends NativeStrike { |
| |
| private FontStrike delegateStrike; |
| |
| DelegateStrike(NativeFont nativeFont, FontStrikeDesc desc, |
| FontStrike delegate) { |
| super(nativeFont, desc); |
| this.delegateStrike = delegate; |
| } |
| |
| /* 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. |
| */ |
| StrikeMetrics getFontMetrics() { |
| if (strikeMetrics == null) { |
| if (pScalerContext != 0) { |
| strikeMetrics = super.getFontMetrics(); |
| } |
| if (strikeMetrics == null) { |
| strikeMetrics = delegateStrike.getFontMetrics(); |
| } |
| } |
| return strikeMetrics; |
| } |
| |
| void getGlyphImagePtrs(int[] glyphCodes, long[] images,int len) { |
| delegateStrike.getGlyphImagePtrs(glyphCodes, images, len); |
| } |
| |
| long getGlyphImagePtr(int glyphCode) { |
| return delegateStrike.getGlyphImagePtr(glyphCode); |
| } |
| |
| void getGlyphImageBounds(int glyphCode, |
| Point2D.Float pt, Rectangle result) { |
| delegateStrike.getGlyphImageBounds(glyphCode, pt, result); |
| } |
| |
| Point2D.Float getGlyphMetrics(int glyphCode) { |
| return delegateStrike.getGlyphMetrics(glyphCode); |
| } |
| |
| float getGlyphAdvance(int glyphCode) { |
| return delegateStrike.getGlyphAdvance(glyphCode); |
| } |
| |
| Point2D.Float getCharMetrics(char ch) { |
| return delegateStrike.getCharMetrics(ch); |
| } |
| |
| float getCodePointAdvance(int cp) { |
| if (cp < 0 || cp >= 0x10000) { |
| cp = 0xffff; |
| } |
| return delegateStrike.getGlyphAdvance(cp); |
| } |
| |
| Rectangle2D.Float getGlyphOutlineBounds(int glyphCode) { |
| return delegateStrike.getGlyphOutlineBounds(glyphCode); |
| } |
| |
| GeneralPath getGlyphOutline(int glyphCode, float x, float y) { |
| return delegateStrike.getGlyphOutline(glyphCode, x, y); |
| } |
| |
| GeneralPath getGlyphVectorOutline(int[] glyphs, float x, float y) { |
| return delegateStrike.getGlyphVectorOutline(glyphs, x, y); |
| } |
| |
| } |
