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/*
* Copyright (c) 2013, 2016, 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
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*/
package com.sun.javafx.font.coretext;
import com.sun.javafx.font.Disposer;
import com.sun.javafx.font.DisposerRecord;
import com.sun.javafx.font.FontStrikeDesc;
import com.sun.javafx.font.PrismFontFile;
import com.sun.javafx.font.PrismFontStrike;
import com.sun.javafx.geom.Path2D;
import com.sun.javafx.geom.transform.BaseTransform;
class CTFontFile extends PrismFontFile {
private final long cgFontRef;
/* Transform used for outline and bounds */
private final static CGAffineTransform tx = new CGAffineTransform();
static {
tx.a = 1; /* scale x */
tx.d = -1; /* scale y */
}
private static class SelfDisposerRecord implements DisposerRecord {
private long cgFontRef;
SelfDisposerRecord(long cgFontRef) {
this.cgFontRef = cgFontRef;
}
@Override
public synchronized void dispose() {
if (cgFontRef != 0) {
OS.CFRelease(cgFontRef);
cgFontRef = 0;
}
}
}
CTFontFile(String name, String filename, int fIndex, boolean register,
boolean embedded, boolean copy, boolean tracked) throws Exception {
super(name, filename, fIndex, register, embedded, copy, tracked);
if (embedded) {
cgFontRef = createCGFontForEmbeddedFont();
Disposer.addRecord(this, new SelfDisposerRecord(cgFontRef));
} else {
cgFontRef = 0;
}
}
public static boolean registerFont(String fontfile) {
if (fontfile == null) return false;
long alloc = OS.kCFAllocatorDefault();
boolean result = false;
long fileRef = OS.CFStringCreate(fontfile);
if (fileRef != 0) {
int pathStyle = OS.kCFURLPOSIXPathStyle;
long urlRef = OS.CFURLCreateWithFileSystemPath(alloc, fileRef, pathStyle, false);
if (urlRef != 0) {
int scope = OS.kCTFontManagerScopeProcess;
result = OS.CTFontManagerRegisterFontsForURL(urlRef, scope, 0);
OS.CFRelease(urlRef);
}
OS.CFRelease(fileRef);
}
return result;
}
private long createCGFontForEmbeddedFont() {
long cgFontRef = 0;
final long fileNameRef = OS.CFStringCreate(getFileName());
if (fileNameRef != 0) {
final long url = OS.CFURLCreateWithFileSystemPath(
OS.kCFAllocatorDefault(), fileNameRef,
OS.kCFURLPOSIXPathStyle, false);
if (url != 0) {
final long dataProvider = OS.CGDataProviderCreateWithURL(url);
if (dataProvider != 0) {
cgFontRef = OS.CGFontCreateWithDataProvider(dataProvider);
OS.CFRelease(dataProvider);
}
OS.CFRelease(url);
}
OS.CFRelease(fileNameRef);
}
return cgFontRef;
}
long getCGFontRef() {
return cgFontRef;
}
CGRect getBBox(int gc, float size) {
CTFontStrike strike = (CTFontStrike)getStrike(size, BaseTransform.IDENTITY_TRANSFORM);
long fontRef = strike.getFontRef();
if (fontRef == 0) return null;
long pathRef = OS.CTFontCreatePathForGlyph(fontRef, (short)gc, tx);
if (pathRef == 0) return null;
CGRect rect = OS.CGPathGetPathBoundingBox(pathRef);
OS.CGPathRelease(pathRef);
return rect;
}
Path2D getGlyphOutline(int gc, float size) {
CTFontStrike strike = (CTFontStrike)getStrike(size, BaseTransform.IDENTITY_TRANSFORM);
long fontRef = strike.getFontRef();
if (fontRef == 0) return null;
long pathRef = OS.CTFontCreatePathForGlyph(fontRef, (short)gc, tx);
if (pathRef == 0) return null;
Path2D path = OS.CGPathApply(pathRef);
OS.CGPathRelease(pathRef);
return path;
}
@Override protected int[] createGlyphBoundingBox(int gc) {
float size = 12;
CTFontStrike strike = (CTFontStrike)getStrike(size,
BaseTransform.IDENTITY_TRANSFORM);
long fontRef = strike.getFontRef();
if (fontRef == 0) return null;
int[] bb = new int[4];
/* For some reason CTFontGetBoundingRectsForGlyphs has poor performance.
* The fix is to use the 'loca' and the 'glyf' tables to determine
* the glyph bounding box (same as T2K). This implementation
* uses native code to read these tables since they can be large.
* In case it fails, or the font doesn't have a glyph table
* (CFF fonts), then the bounds of the glyph outline is used instead.
*/
if (!isCFF()) {
short format = getIndexToLocFormat();
if (OS.CTFontGetBoundingRectForGlyphUsingTables(fontRef, (short)gc, format, bb)) {
return bb;
}
}
/* Note: not using tx here as the bounds need to be y up */
long pathRef = OS.CTFontCreatePathForGlyph(fontRef, (short)gc, null);
if (pathRef == 0) return null;
CGRect rect = OS.CGPathGetPathBoundingBox(pathRef);
OS.CGPathRelease(pathRef);
float scale = getUnitsPerEm() / size;
bb[0] = (int)(Math.round(rect.origin.x * scale));
bb[1] = (int)(Math.round(rect.origin.y * scale));
bb[2] = (int)(Math.round((rect.origin.x + rect.size.width) * scale));
bb[3] = (int)(Math.round((rect.origin.y + rect.size.height) * scale));
return bb;
}
@Override
protected PrismFontStrike createStrike(float size,
BaseTransform transform, int aaMode, FontStrikeDesc desc) {
return new CTFontStrike(this, size, transform, aaMode, desc);
}
}
