Java example source code file (CoreTextSupport.h)

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Java - Java tags/keywords

awtfont, cfmutabledictionaryref, cgglyph, coretext, ctfontref, cts_copyctfallbackfontandglyphforjavaglyphcode, cts_copyctfallbackfontandglyphforunicode, cts_getglyphsasintsforcharacters, cts_providerstruct, hi_surrogate_start, lo_surrogate_start, support, unichar, utf16char

The CoreTextSupport.h Java example source code

/*
 * Copyright (c) 2011, 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.
 */

#import <Cocoa/Cocoa.h>
#import <jni.h>
#import <JavaRuntimeSupport/JavaRuntimeSupport.h>

#include "AWTFont.h"

#pragma mark --- CoreText Support ---

#define HI_SURROGATE_START 0xD800
#define LO_SURROGATE_START 0xDC00

/*
 *    Transform Unicode characters into glyphs.
 *
 *    Fills the "glyphsAsInts" array with the glyph codes for the current font,
 *    or the negative unicode value if we know the character can be hot-substituted.
 *
 *    This is the heart of "Universal Font Substitution" in Java.
 */
void CTS_GetGlyphsAsIntsForCharacters(const AWTFont *font, const UniChar unicodes[], CGGlyph glyphs[], jint glyphsAsInts[], const size_t count);

// Translates a Java glyph code int (might be a negative unicode value) into a CGGlyph/CTFontRef pair
// Returns the substituted font, and places the appropriate glyph into "glyph"
CTFontRef CTS_CopyCTFallbackFontAndGlyphForJavaGlyphCode(const AWTFont *font, const jint glyphCode, CGGlyph *glyphRef);

// Translates a Unicode into a CGGlyph/CTFontRef pair
// Returns the substituted font, and places the appropriate glyph into "glyphRef"
CTFontRef CTS_CopyCTFallbackFontAndGlyphForUnicode(const AWTFont *font, const UTF16Char *charRef, CGGlyph *glyphRef, int count);

// Breakup a 32 bit unicode value into the component surrogate pairs
void CTS_BreakupUnicodeIntoSurrogatePairs(int uniChar, UTF16Char charRef[]);


// Basic struct that holds everything CoreText is interested in
typedef struct CTS_ProviderStruct {
    const UniChar         *unicodes;
    CFIndex                length;
    CFMutableDictionaryRef attributes;
} CTS_ProviderStruct;