1 /*

     2  * Copyright 2003-2007 Sun Microsystems, Inc.  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.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 #ifndef FontScalerDefsIncludesDefined

    27 #define FontScalerDefsIncludesDefined

    28 

    29 #include "AccelGlyphCache.h"

    30 

    31 #ifdef  __cplusplus

    32 extern "C" {

    33 #endif

    34 

    35 #define kPosInfinity16          (32767)

    36 #define kNegInfinity16          (-32768)

    37 

    38 #define kPosInfinity32          (0x7fffffff)

    39 #define kNegInfinity32          (0x80000000)

    40 

    41 

    42 #ifdef _LP64

    43 typedef unsigned int            UInt32;

    44 typedef int                     Int32;

    45 #else

    46 typedef unsigned long           UInt32;

    47 typedef long                    Int32;

    48 #endif

    49 typedef unsigned short          UInt16;

    50 typedef short                   Int16;

    51 typedef unsigned char           UInt8;

    52 

    53 typedef UInt8                   Byte;

    54 typedef Int32                   hsFixed;

    55 typedef Int32                   hsFract;

    56 typedef UInt32                  Bool32;

    57 

    58 #ifndef false

    59         #define false           0

    60 #endif

    61 

    62 #ifndef true

    63         #define true            1

    64 #endif

    65 

    66 #define kPosInfinity32          (0x7fffffff)

    67 #define kNegInfinity32          (0x80000000)

    68 

    69 #define F26Dot6ToFixed(n)  ((n) << 10)

    70 #define F26Dot6ToScalar(n) (((t2kScalar)(n)) / (t2kScalar)64)

    71 

    72   /* t2kFixed is the same as F16Dot16 format although T2K also uses 26.6 */

    73 typedef Int32 t2kFixed;

    74 typedef float t2kScalar;

    75 

    76 #define t2kIntToFixed(x) ((t2kFixed)(x) << 16)

    77 #define t2kFixedToInt(x) ((x) >> 16)

    78 

    79 #define t2kFixedRound(x) (((x) + 0x8000) >> 16)

    80 #define t2kFixed1 t2kIntToFixed(1)

    81 

    82 #define t2kFloatToFixed(f) (t2kFixed)((f) * (float)(t2kFixed1))

    83 #define t2kFixedToFloat(x) ((x) / (float)(65536))

    84 

    85 #define t2kScalarAverage(a, b) (((a) + (b)) / (t2kScalar)(2))

    86 

    87 typedef struct GlyphInfo {

    88     float        advanceX;

    89     float        advanceY;

    90     UInt16       width;

    91     UInt16       height;

    92     UInt16       rowBytes;

    93     float        topLeftX;

    94     float        topLeftY;

    95     struct _CacheCellInfo *cellInfo;

    96     UInt8        *image;

    97 } GlyphInfo;

    98 

    99   /* We use fffe and ffff as meaning invisible glyphs which have no

   100    * image, or advance and an empty outline.

   101    * Since there are no valid glyphs with this great a value (watch out for

   102    * large fonts in the future!) we can safely use check for >= this value

   103    */

   104 #define INVISIBLE_GLYPHS 0xfffe

   105 

   106 #define GSUB_TAG 0x47535542 /* 'GSUB' */

   107 #define GPOS_TAG 0x47504F53 /* 'GPOS' */

   108 #define GDEF_TAG 0x47444546 /* 'GDEF' */

   109 #define MORT_TAG 0x6D6F7274 /* 'mort' */

   110 #define KERN_TAG 0x6B65726E /* 'kern' */

   111 

   112 typedef struct TTLayoutTableCache {

   113     void* gsub;

   114     void* gpos;

   115     void* gdef;

   116     void* mort;

   117     void* kern;

   118     void* kernPairs;

   119     int gsub_len;

   120     int gpos_len;

   121     int gdef_len;

   122     int mort_len;

   123     int kern_len;

   124 } TTLayoutTableCache;

   125 

   126 #include "sunfontids.h"

   127 

   128 JNIEXPORT extern TTLayoutTableCache* newLayoutTableCache();

   129 JNIEXPORT extern void freeLayoutTableCache(TTLayoutTableCache* ltc);

   130 

   131 /* If font is malformed then scaler context created by particular scaler

   132  * will be replaced by null scaler context.

   133  * Note that this context is not compatible with structure of the context

   134  * object used by particular scaler. Therefore, before using context

   135  * scaler has to check if it is NullContext.

   136  *

   137  * Note that in theory request with NullContext should not even reach native

   138  * scaler.

   139  *

   140  * It seems that the only reason to support NullContext is to simplify

   141  * FileFontStrike logic - presence of context is used as marker to

   142  * free the memory.

   143 */

   144 JNIEXPORT int isNullScalerContext(void *context);

   145 

   146 #ifdef  __cplusplus

   147 }

   148 #endif

   149 

   150 #endif