| /* |
| * Copyright (c) 2007, 2013, 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.GeneralPath; |
| import java.awt.geom.Point2D; |
| import java.awt.geom.Rectangle2D; |
| import java.lang.ref.WeakReference; |
| |
| /* This is Freetype based implementation of FontScaler. |
| * |
| * Note that in case of runtime error it is expected that |
| * native code will release all native resources and |
| * call invalidateScaler() (that will throw FontScalerException). |
| * |
| * Note that callee is responsible for releasing native scaler context. |
| */ |
| class FreetypeFontScaler extends FontScaler { |
| /* constants aligned with native code */ |
| private static final int TRUETYPE_FONT = 1; |
| private static final int TYPE1_FONT = 2; |
| |
| static { |
| /* At the moment fontmanager library depends on freetype library |
| and therefore no need to load it explicitly here */ |
| FontManagerNativeLibrary.load(); |
| initIDs(FreetypeFontScaler.class); |
| } |
| |
| private static native void initIDs(Class FFS); |
| |
| private void invalidateScaler() throws FontScalerException { |
| nativeScaler = 0; |
| font = null; |
| throw new FontScalerException(); |
| } |
| |
| public FreetypeFontScaler(Font2D font, int indexInCollection, |
| boolean supportsCJK, int filesize) { |
| int fonttype = TRUETYPE_FONT; |
| if (font instanceof Type1Font) { |
| fonttype = TYPE1_FONT; |
| } |
| nativeScaler = initNativeScaler(font, |
| fonttype, |
| indexInCollection, |
| supportsCJK, |
| filesize); |
| this.font = new WeakReference(font); |
| } |
| |
| synchronized StrikeMetrics getFontMetrics(long pScalerContext) |
| throws FontScalerException { |
| if (nativeScaler != 0L) { |
| return getFontMetricsNative(font.get(), |
| pScalerContext, |
| nativeScaler); |
| } |
| return FontScaler.getNullScaler().getFontMetrics(0L); |
| } |
| |
| synchronized float getGlyphAdvance(long pScalerContext, int glyphCode) |
| throws FontScalerException { |
| if (nativeScaler != 0L) { |
| return getGlyphAdvanceNative(font.get(), |
| pScalerContext, |
| nativeScaler, |
| glyphCode); |
| } |
| return FontScaler.getNullScaler(). |
| getGlyphAdvance(0L, glyphCode); |
| } |
| |
| synchronized void getGlyphMetrics(long pScalerContext, |
| int glyphCode, Point2D.Float metrics) |
| throws FontScalerException { |
| if (nativeScaler != 0L) { |
| getGlyphMetricsNative(font.get(), |
| pScalerContext, |
| nativeScaler, |
| glyphCode, |
| metrics); |
| return; |
| } |
| FontScaler.getNullScaler(). |
| getGlyphMetrics(0L, glyphCode, metrics); |
| } |
| |
| synchronized long getGlyphImage(long pScalerContext, int glyphCode) |
| throws FontScalerException { |
| if (nativeScaler != 0L) { |
| return getGlyphImageNative(font.get(), |
| pScalerContext, |
| nativeScaler, |
| glyphCode); |
| } |
| return FontScaler.getNullScaler(). |
| getGlyphImage(0L, glyphCode); |
| } |
| |
| synchronized Rectangle2D.Float getGlyphOutlineBounds( |
| long pScalerContext, int glyphCode) |
| throws FontScalerException { |
| if (nativeScaler != 0L) { |
| return getGlyphOutlineBoundsNative(font.get(), |
| pScalerContext, |
| nativeScaler, |
| glyphCode); |
| } |
| return FontScaler.getNullScaler(). |
| getGlyphOutlineBounds(0L,glyphCode); |
| } |
| |
| synchronized GeneralPath getGlyphOutline( |
| long pScalerContext, int glyphCode, float x, float y) |
| throws FontScalerException { |
| if (nativeScaler != 0L) { |
| return getGlyphOutlineNative(font.get(), |
| pScalerContext, |
| nativeScaler, |
| glyphCode, |
| x, y); |
| } |
| return FontScaler.getNullScaler(). |
| getGlyphOutline(0L, glyphCode, x,y); |
| } |
| |
| synchronized GeneralPath getGlyphVectorOutline( |
| long pScalerContext, int[] glyphs, int numGlyphs, |
| float x, float y) throws FontScalerException { |
| if (nativeScaler != 0L) { |
| return getGlyphVectorOutlineNative(font.get(), |
| pScalerContext, |
| nativeScaler, |
| glyphs, |
| numGlyphs, |
| x, y); |
| } |
| return FontScaler |
| .getNullScaler().getGlyphVectorOutline(0L, glyphs, numGlyphs, x, y); |
| } |
| |
| synchronized long getLayoutTableCache() throws FontScalerException { |
| return getLayoutTableCacheNative(nativeScaler); |
| } |
| |
| public synchronized void dispose() { |
| if (nativeScaler != 0L) { |
| disposeNativeScaler(font.get(), nativeScaler); |
| nativeScaler = 0L; |
| } |
| } |
| |
| synchronized int getNumGlyphs() throws FontScalerException { |
| if (nativeScaler != 0L) { |
| return getNumGlyphsNative(nativeScaler); |
| } |
| return FontScaler.getNullScaler().getNumGlyphs(); |
| } |
| |
| synchronized int getMissingGlyphCode() throws FontScalerException { |
| if (nativeScaler != 0L) { |
| return getMissingGlyphCodeNative(nativeScaler); |
| } |
| return FontScaler.getNullScaler().getMissingGlyphCode(); |
| } |
| |
| synchronized int getGlyphCode(char charCode) throws FontScalerException { |
| if (nativeScaler != 0L) { |
| return getGlyphCodeNative(font.get(), nativeScaler, charCode); |
| } |
| return FontScaler.getNullScaler().getGlyphCode(charCode); |
| } |
| |
| synchronized Point2D.Float getGlyphPoint(long pScalerContext, |
| int glyphCode, int ptNumber) |
| throws FontScalerException { |
| if (nativeScaler != 0L) { |
| return getGlyphPointNative(font.get(), pScalerContext, |
| nativeScaler, glyphCode, ptNumber); |
| } |
| return FontScaler.getNullScaler().getGlyphPoint( |
| pScalerContext, glyphCode, ptNumber); |
| } |
| |
| synchronized long getUnitsPerEm() { |
| return getUnitsPerEMNative(nativeScaler); |
| } |
| |
| long createScalerContext(double[] matrix, |
| int aa, int fm, float boldness, float italic, |
| boolean disableHinting) { |
| if (nativeScaler != 0L) { |
| return createScalerContextNative(nativeScaler, matrix, |
| aa, fm, boldness, italic); |
| } |
| return NullFontScaler.getNullScalerContext(); |
| } |
| |
| //Note: native methods can throw RuntimeException if processing fails |
| private native long initNativeScaler(Font2D font, int type, |
| int indexInCollection, boolean supportsCJK, int filesize); |
| private native StrikeMetrics getFontMetricsNative(Font2D font, |
| long pScalerContext, long pScaler); |
| private native float getGlyphAdvanceNative(Font2D font, |
| long pScalerContext, long pScaler, int glyphCode); |
| private native void getGlyphMetricsNative(Font2D font, |
| long pScalerContext, long pScaler, |
| int glyphCode, Point2D.Float metrics); |
| private native long getGlyphImageNative(Font2D font, |
| long pScalerContext, long pScaler, int glyphCode); |
| private native Rectangle2D.Float getGlyphOutlineBoundsNative(Font2D font, |
| long pScalerContext, long pScaler, int glyphCode); |
| private native GeneralPath getGlyphOutlineNative(Font2D font, |
| long pScalerContext, long pScaler, |
| int glyphCode, float x, float y); |
| private native GeneralPath getGlyphVectorOutlineNative(Font2D font, |
| long pScalerContext, long pScaler, |
| int[] glyphs, int numGlyphs, float x, float y); |
| native Point2D.Float getGlyphPointNative(Font2D font, |
| long pScalerContext, long pScaler, int glyphCode, int ptNumber); |
| |
| private native long getLayoutTableCacheNative(long pScaler); |
| |
| private native void disposeNativeScaler(Font2D font2D, long pScaler); |
| |
| private native int getGlyphCodeNative(Font2D font, long pScaler, char charCode); |
| private native int getNumGlyphsNative(long pScaler); |
| private native int getMissingGlyphCodeNative(long pScaler); |
| |
| private native long getUnitsPerEMNative(long pScaler); |
| |
| native long createScalerContextNative(long pScaler, double[] matrix, |
| int aa, int fm, float boldness, float italic); |
| |
| /* Freetype scaler context does not contain any pointers that |
| has to be invalidated if native scaler is bad */ |
| void invalidateScalerContext(long pScalerContext) {} |
| } |