1 /*
   2  * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #import <Cocoa/Cocoa.h>
  27 #import <jni.h>
  28 #import <JavaRuntimeSupport/JavaRuntimeSupport.h>
  29 
  30 #include "AWTFont.h"
  31 
  32 #pragma mark --- CoreText Support ---
  33 
  34 #define HI_SURROGATE_START 0xD800
  35 #define HI_SURROGATE_END   0xDBFF
  36 #define LO_SURROGATE_START 0xDC00
  37 #define LO_SURROGATE_END   0xDFFF
  38 
  39 /*
  40  *    Transform Unicode characters into glyphs.
  41  *
  42  *    Fills the "glyphsAsInts" array with the glyph codes for the current font,
  43  *    or the negative unicode value if we know the character can be hot-substituted.
  44  *
  45  *    This is the heart of "Universal Font Substitution" in Java.
  46  */
  47 void CTS_GetGlyphsAsIntsForCharacters(const AWTFont *font, const UniChar unicodes[], CGGlyph glyphs[], jint glyphsAsInts[], const size_t count);
  48 
  49 // Translates a Java glyph code int (might be a negative unicode value) into a CGGlyph/CTFontRef pair
  50 // Returns the substituted font, and places the appropriate glyph into "glyph"
  51 CTFontRef CTS_CopyCTFallbackFontAndGlyphForJavaGlyphCode(const AWTFont *font, const jint glyphCode, CGGlyph *glyphRef);
  52 
  53 // Translates a Unicode into a CGGlyph/CTFontRef pair
  54 // Returns the substituted font, and places the appropriate glyph into "glyphRef"
  55 CTFontRef CTS_CopyCTFallbackFontAndGlyphForUnicode(const AWTFont *font, const UTF16Char *charRef, CGGlyph *glyphRef, int count);
  56 
  57 // Breakup a 32 bit unicode value into the component surrogate pairs
  58 void CTS_BreakupUnicodeIntoSurrogatePairs(int uniChar, UTF16Char charRef[]);
  59 
  60 
  61 // Basic struct that holds everything CoreText is interested in
  62 typedef struct CTS_ProviderStruct {
  63     const UniChar         *unicodes;
  64     CFIndex                length;
  65     CFMutableDictionaryRef attributes;
  66 } CTS_ProviderStruct;