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/src/compiler/android-ndk/jni/freetype/include/freetype/ftmodapi.h

http://ftk.googlecode.com/
C++ Header | 445 lines | 76 code | 59 blank | 310 comment | 0 complexity | 749d10950684c49ffac06d7d43ae329b MD5 | raw file
  1/***************************************************************************/
  2/*                                                                         */
  3/*  ftmodapi.h                                                             */
  4/*                                                                         */
  5/*    FreeType modules public interface (specification).                   */
  6/*                                                                         */
  7/*  Copyright 1996-2001, 2002, 2003, 2006, 2008, 2009 by                   */
  8/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
  9/*                                                                         */
 10/*  This file is part of the FreeType project, and may only be used,       */
 11/*  modified, and distributed under the terms of the FreeType project      */
 12/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
 13/*  this file you indicate that you have read the license and              */
 14/*  understand and accept it fully.                                        */
 15/*                                                                         */
 16/***************************************************************************/
 17
 18
 19#ifndef __FTMODAPI_H__
 20#define __FTMODAPI_H__
 21
 22
 23#include <ft2build.h>
 24#include FT_FREETYPE_H
 25
 26#ifdef FREETYPE_H
 27#error "freetype.h of FreeType 1 has been loaded!"
 28#error "Please fix the directory search order for header files"
 29#error "so that freetype.h of FreeType 2 is found first."
 30#endif
 31
 32
 33FT_BEGIN_HEADER
 34
 35
 36  /*************************************************************************/
 37  /*                                                                       */
 38  /* <Section>                                                             */
 39  /*    module_management                                                  */
 40  /*                                                                       */
 41  /* <Title>                                                               */
 42  /*    Module Management                                                  */
 43  /*                                                                       */
 44  /* <Abstract>                                                            */
 45  /*    How to add, upgrade, and remove modules from FreeType.             */
 46  /*                                                                       */
 47  /* <Description>                                                         */
 48  /*    The definitions below are used to manage modules within FreeType.  */
 49  /*    Modules can be added, upgraded, and removed at runtime.            */
 50  /*                                                                       */
 51  /*************************************************************************/
 52
 53
 54  /* module bit flags */
 55#define FT_MODULE_FONT_DRIVER         1  /* this module is a font driver  */
 56#define FT_MODULE_RENDERER            2  /* this module is a renderer     */
 57#define FT_MODULE_HINTER              4  /* this module is a glyph hinter */
 58#define FT_MODULE_STYLER              8  /* this module is a styler       */
 59
 60#define FT_MODULE_DRIVER_SCALABLE     0x100   /* the driver supports      */
 61                                              /* scalable fonts           */
 62#define FT_MODULE_DRIVER_NO_OUTLINES  0x200   /* the driver does not      */
 63                                              /* support vector outlines  */
 64#define FT_MODULE_DRIVER_HAS_HINTER   0x400   /* the driver provides its  */
 65                                              /* own hinter               */
 66
 67
 68  /* deprecated values */
 69#define ft_module_font_driver         FT_MODULE_FONT_DRIVER
 70#define ft_module_renderer            FT_MODULE_RENDERER
 71#define ft_module_hinter              FT_MODULE_HINTER
 72#define ft_module_styler              FT_MODULE_STYLER
 73
 74#define ft_module_driver_scalable     FT_MODULE_DRIVER_SCALABLE
 75#define ft_module_driver_no_outlines  FT_MODULE_DRIVER_NO_OUTLINES
 76#define ft_module_driver_has_hinter   FT_MODULE_DRIVER_HAS_HINTER
 77
 78
 79  typedef FT_Pointer  FT_Module_Interface;
 80
 81
 82  /*************************************************************************/
 83  /*                                                                       */
 84  /* <FuncType>                                                            */
 85  /*    FT_Module_Constructor                                              */
 86  /*                                                                       */
 87  /* <Description>                                                         */
 88  /*    A function used to initialize (not create) a new module object.    */
 89  /*                                                                       */
 90  /* <Input>                                                               */
 91  /*    module :: The module to initialize.                                */
 92  /*                                                                       */
 93  typedef FT_Error
 94  (*FT_Module_Constructor)( FT_Module  module );
 95
 96
 97  /*************************************************************************/
 98  /*                                                                       */
 99  /* <FuncType>                                                            */
100  /*    FT_Module_Destructor                                               */
101  /*                                                                       */
102  /* <Description>                                                         */
103  /*    A function used to finalize (not destroy) a given module object.   */
104  /*                                                                       */
105  /* <Input>                                                               */
106  /*    module :: The module to finalize.                                  */
107  /*                                                                       */
108  typedef void
109  (*FT_Module_Destructor)( FT_Module  module );
110
111
112  /*************************************************************************/
113  /*                                                                       */
114  /* <FuncType>                                                            */
115  /*    FT_Module_Requester                                                */
116  /*                                                                       */
117  /* <Description>                                                         */
118  /*    A function used to query a given module for a specific interface.  */
119  /*                                                                       */
120  /* <Input>                                                               */
121  /*    module :: The module to finalize.                                  */
122  /*                                                                       */
123  /*    name ::   The name of the interface in the module.                 */
124  /*                                                                       */
125  typedef FT_Module_Interface
126  (*FT_Module_Requester)( FT_Module    module,
127                          const char*  name );
128
129
130  /*************************************************************************/
131  /*                                                                       */
132  /* <Struct>                                                              */
133  /*    FT_Module_Class                                                    */
134  /*                                                                       */
135  /* <Description>                                                         */
136  /*    The module class descriptor.                                       */
137  /*                                                                       */
138  /* <Fields>                                                              */
139  /*    module_flags    :: Bit flags describing the module.                */
140  /*                                                                       */
141  /*    module_size     :: The size of one module object/instance in       */
142  /*                       bytes.                                          */
143  /*                                                                       */
144  /*    module_name     :: The name of the module.                         */
145  /*                                                                       */
146  /*    module_version  :: The version, as a 16.16 fixed number            */
147  /*                       (major.minor).                                  */
148  /*                                                                       */
149  /*    module_requires :: The version of FreeType this module requires,   */
150  /*                       as a 16.16 fixed number (major.minor).  Starts  */
151  /*                       at version 2.0, i.e., 0x20000.                  */
152  /*                                                                       */
153  /*    module_init     :: The initializing function.                      */
154  /*                                                                       */
155  /*    module_done     :: The finalizing function.                        */
156  /*                                                                       */
157  /*    get_interface   :: The interface requesting function.              */
158  /*                                                                       */
159  typedef struct  FT_Module_Class_
160  {
161    FT_ULong               module_flags;
162    FT_Long                module_size;
163    const FT_String*       module_name;
164    FT_Fixed               module_version;
165    FT_Fixed               module_requires;
166
167    const void*            module_interface;
168
169    FT_Module_Constructor  module_init;
170    FT_Module_Destructor   module_done;
171    FT_Module_Requester    get_interface;
172
173  } FT_Module_Class;
174
175
176  /*************************************************************************/
177  /*                                                                       */
178  /* <Function>                                                            */
179  /*    FT_Add_Module                                                      */
180  /*                                                                       */
181  /* <Description>                                                         */
182  /*    Add a new module to a given library instance.                      */
183  /*                                                                       */
184  /* <InOut>                                                               */
185  /*    library :: A handle to the library object.                         */
186  /*                                                                       */
187  /* <Input>                                                               */
188  /*    clazz   :: A pointer to class descriptor for the module.           */
189  /*                                                                       */
190  /* <Return>                                                              */
191  /*    FreeType error code.  0~means success.                             */
192  /*                                                                       */
193  /* <Note>                                                                */
194  /*    An error will be returned if a module already exists by that name, */
195  /*    or if the module requires a version of FreeType that is too great. */
196  /*                                                                       */
197  FT_EXPORT( FT_Error )
198  FT_Add_Module( FT_Library              library,
199                 const FT_Module_Class*  clazz );
200
201
202  /*************************************************************************/
203  /*                                                                       */
204  /* <Function>                                                            */
205  /*    FT_Get_Module                                                      */
206  /*                                                                       */
207  /* <Description>                                                         */
208  /*    Find a module by its name.                                         */
209  /*                                                                       */
210  /* <Input>                                                               */
211  /*    library     :: A handle to the library object.                     */
212  /*                                                                       */
213  /*    module_name :: The module's name (as an ASCII string).             */
214  /*                                                                       */
215  /* <Return>                                                              */
216  /*    A module handle.  0~if none was found.                             */
217  /*                                                                       */
218  /* <Note>                                                                */
219  /*    FreeType's internal modules aren't documented very well, and you   */
220  /*    should look up the source code for details.                        */
221  /*                                                                       */
222  FT_EXPORT( FT_Module )
223  FT_Get_Module( FT_Library   library,
224                 const char*  module_name );
225
226
227  /*************************************************************************/
228  /*                                                                       */
229  /* <Function>                                                            */
230  /*    FT_Remove_Module                                                   */
231  /*                                                                       */
232  /* <Description>                                                         */
233  /*    Remove a given module from a library instance.                     */
234  /*                                                                       */
235  /* <InOut>                                                               */
236  /*    library :: A handle to a library object.                           */
237  /*                                                                       */
238  /* <Input>                                                               */
239  /*    module  :: A handle to a module object.                            */
240  /*                                                                       */
241  /* <Return>                                                              */
242  /*    FreeType error code.  0~means success.                             */
243  /*                                                                       */
244  /* <Note>                                                                */
245  /*    The module object is destroyed by the function in case of success. */
246  /*                                                                       */
247  FT_EXPORT( FT_Error )
248  FT_Remove_Module( FT_Library  library,
249                    FT_Module   module );
250
251
252  /*************************************************************************/
253  /*                                                                       */
254  /* <Function>                                                            */
255  /*    FT_New_Library                                                     */
256  /*                                                                       */
257  /* <Description>                                                         */
258  /*    This function is used to create a new FreeType library instance    */
259  /*    from a given memory object.  It is thus possible to use libraries  */
260  /*    with distinct memory allocators within the same program.           */
261  /*                                                                       */
262  /*    Normally, you would call this function (followed by a call to      */
263  /*    @FT_Add_Default_Modules or a series of calls to @FT_Add_Module)    */
264  /*    instead of @FT_Init_FreeType to initialize the FreeType library.   */
265  /*                                                                       */
266  /* <Input>                                                               */
267  /*    memory   :: A handle to the original memory object.                */
268  /*                                                                       */
269  /* <Output>                                                              */
270  /*    alibrary :: A pointer to handle of a new library object.           */
271  /*                                                                       */
272  /* <Return>                                                              */
273  /*    FreeType error code.  0~means success.                             */
274  /*                                                                       */
275  FT_EXPORT( FT_Error )
276  FT_New_Library( FT_Memory    memory,
277                  FT_Library  *alibrary );
278
279
280  /*************************************************************************/
281  /*                                                                       */
282  /* <Function>                                                            */
283  /*    FT_Done_Library                                                    */
284  /*                                                                       */
285  /* <Description>                                                         */
286  /*    Discard a given library object.  This closes all drivers and       */
287  /*    discards all resource objects.                                     */
288  /*                                                                       */
289  /* <Input>                                                               */
290  /*    library :: A handle to the target library.                         */
291  /*                                                                       */
292  /* <Return>                                                              */
293  /*    FreeType error code.  0~means success.                             */
294  /*                                                                       */
295  FT_EXPORT( FT_Error )
296  FT_Done_Library( FT_Library  library );
297
298/* */
299
300  typedef void
301  (*FT_DebugHook_Func)( void*  arg );
302
303
304  /*************************************************************************/
305  /*                                                                       */
306  /* <Function>                                                            */
307  /*    FT_Set_Debug_Hook                                                  */
308  /*                                                                       */
309  /* <Description>                                                         */
310  /*    Set a debug hook function for debugging the interpreter of a font  */
311  /*    format.                                                            */
312  /*                                                                       */
313  /* <InOut>                                                               */
314  /*    library    :: A handle to the library object.                      */
315  /*                                                                       */
316  /* <Input>                                                               */
317  /*    hook_index :: The index of the debug hook.  You should use the     */
318  /*                  values defined in `ftobjs.h', e.g.,                  */
319  /*                  `FT_DEBUG_HOOK_TRUETYPE'.                            */
320  /*                                                                       */
321  /*    debug_hook :: The function used to debug the interpreter.          */
322  /*                                                                       */
323  /* <Note>                                                                */
324  /*    Currently, four debug hook slots are available, but only two (for  */
325  /*    the TrueType and the Type~1 interpreter) are defined.              */
326  /*                                                                       */
327  /*    Since the internal headers of FreeType are no longer installed,    */
328  /*    the symbol `FT_DEBUG_HOOK_TRUETYPE' isn't available publicly.      */
329  /*    This is a bug and will be fixed in a forthcoming release.          */
330  /*                                                                       */
331  FT_EXPORT( void )
332  FT_Set_Debug_Hook( FT_Library         library,
333                     FT_UInt            hook_index,
334                     FT_DebugHook_Func  debug_hook );
335
336
337  /*************************************************************************/
338  /*                                                                       */
339  /* <Function>                                                            */
340  /*    FT_Add_Default_Modules                                             */
341  /*                                                                       */
342  /* <Description>                                                         */
343  /*    Add the set of default drivers to a given library object.          */
344  /*    This is only useful when you create a library object with          */
345  /*    @FT_New_Library (usually to plug a custom memory manager).         */
346  /*                                                                       */
347  /* <InOut>                                                               */
348  /*    library :: A handle to a new library object.                       */
349  /*                                                                       */
350  FT_EXPORT( void )
351  FT_Add_Default_Modules( FT_Library  library );
352
353
354
355  /**************************************************************************
356   *
357   * @section:
358   *   truetype_engine
359   *
360   * @title:
361   *   The TrueType Engine
362   *
363   * @abstract:
364   *   TrueType bytecode support.
365   *
366   * @description:
367   *   This section contains a function used to query the level of TrueType
368   *   bytecode support compiled in this version of the library.
369   *
370   */
371
372
373  /**************************************************************************
374   *
375   *  @enum:
376   *     FT_TrueTypeEngineType
377   *
378   *  @description:
379   *     A list of values describing which kind of TrueType bytecode
380   *     engine is implemented in a given FT_Library instance.  It is used
381   *     by the @FT_Get_TrueType_Engine_Type function.
382   *
383   *  @values:
384   *     FT_TRUETYPE_ENGINE_TYPE_NONE ::
385   *       The library doesn't implement any kind of bytecode interpreter.
386   *
387   *     FT_TRUETYPE_ENGINE_TYPE_UNPATENTED ::
388   *       The library implements a bytecode interpreter that doesn't
389   *       support the patented operations of the TrueType virtual machine.
390   *
391   *       Its main use is to load certain Asian fonts which position and
392   *       scale glyph components with bytecode instructions.  It produces
393   *       bad output for most other fonts.
394   *
395   *    FT_TRUETYPE_ENGINE_TYPE_PATENTED ::
396   *       The library implements a bytecode interpreter that covers
397   *       the full instruction set of the TrueType virtual machine.
398   *       See the file `docs/PATENTS' for legal aspects.
399   *
400   *  @since:
401   *       2.2
402   *
403   */
404  typedef enum  FT_TrueTypeEngineType_
405  {
406    FT_TRUETYPE_ENGINE_TYPE_NONE = 0,
407    FT_TRUETYPE_ENGINE_TYPE_UNPATENTED,
408    FT_TRUETYPE_ENGINE_TYPE_PATENTED
409
410  } FT_TrueTypeEngineType;
411
412
413  /**************************************************************************
414   *
415   *  @func:
416   *     FT_Get_TrueType_Engine_Type
417   *
418   *  @description:
419   *     Return an @FT_TrueTypeEngineType value to indicate which level of
420   *     the TrueType virtual machine a given library instance supports.
421   *
422   *  @input:
423   *     library ::
424   *       A library instance.
425   *
426   *  @return:
427   *     A value indicating which level is supported.
428   *
429   *  @since:
430   *     2.2
431   *
432   */
433  FT_EXPORT( FT_TrueTypeEngineType )
434  FT_Get_TrueType_Engine_Type( FT_Library  library );
435
436
437  /* */
438
439
440FT_END_HEADER
441
442#endif /* __FTMODAPI_H__ */
443
444
445/* END */