forked from minhngoc25a/freetype2
145 lines
5.7 KiB
C
145 lines
5.7 KiB
C
/***************************************************************************/
|
|
/* */
|
|
/* ftinit.c */
|
|
/* */
|
|
/* FreeType initialisation layer (body). */
|
|
/* */
|
|
/* Copyright 1996-1999 by */
|
|
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
|
|
/* */
|
|
/* This file is part of the FreeType project, and may only be used */
|
|
/* modified and distributed under the terms of the FreeType project */
|
|
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
|
|
/* this file you indicate that you have read the license and */
|
|
/* understand and accept it fully. */
|
|
/* */
|
|
/***************************************************************************/
|
|
|
|
/**************************************************************************
|
|
*
|
|
* The purpose of this file is to implement the three following
|
|
* functions:
|
|
*
|
|
* FT_Default_Drivers:
|
|
* This function is used to add the set of default drivers
|
|
* to a fresh new library object. The set is computed at compile
|
|
* time from the Makefiles inclusions in Makefile.lib. See the
|
|
* document "FreeType Internals" for more info.
|
|
*
|
|
*
|
|
* FT_Init_FreeType:
|
|
* This function creates a system object for the current platform,
|
|
* builds a library out of it, then calls FT_Default_Drivers
|
|
*
|
|
*
|
|
* FT_Done_FreeType:
|
|
* This function simply finalise the library and the corresponding
|
|
* system object.
|
|
*
|
|
*
|
|
* Note that even if FT_Init_FreeType uses the implementation of the
|
|
* system object defined at build time, client applications are still
|
|
* able to provide their own "ftsystem.c"
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
************************************************************************/
|
|
|
|
#include <ftobjs.h>
|
|
#include <ftconfig.h>
|
|
#include <ftdebug.h>
|
|
#include <ftdriver.h>
|
|
|
|
#undef FT_COMPONENT
|
|
#define FT_COMPONENT trace_init
|
|
|
|
#undef FT_DRIVER
|
|
#define FT_DRIVER(x) extern FT_DriverInterface x;
|
|
#include <ftmodule.h>
|
|
|
|
#undef FT_DRIVER
|
|
#define FT_DRIVER(x) &x,
|
|
|
|
static
|
|
const FT_DriverInterface* ft_default_drivers[] = {
|
|
#include <ftmodule.h>
|
|
0
|
|
};
|
|
|
|
/*************************************************************************/
|
|
/* */
|
|
/* <Function> */
|
|
/* FT_Default_Drivers */
|
|
/* */
|
|
/* <Description> */
|
|
/* Adds the set of default drivers to a given library object. */
|
|
/* */
|
|
/* <Input> */
|
|
/* library :: A handle to a new library object. */
|
|
/* */
|
|
EXPORT_FUNC
|
|
void FT_Default_Drivers( FT_Library library )
|
|
{
|
|
FT_Error error;
|
|
const FT_DriverInterface* *cur;
|
|
|
|
cur = ft_default_drivers;
|
|
while (*cur)
|
|
{
|
|
error = FT_Add_Driver( library, *cur );
|
|
/* notify errors, but don't stop */
|
|
if (error)
|
|
{
|
|
FT_ERROR(( "FT.Default_Drivers: cannot install `%s', error = %x\n",
|
|
(*cur)->driver_name, error ));
|
|
}
|
|
cur++;
|
|
}
|
|
}
|
|
|
|
|
|
/*************************************************************************/
|
|
/* */
|
|
/* <Function> */
|
|
/* FT_Init_FreeType */
|
|
/* */
|
|
/* <Description> */
|
|
/* Initializes a new FreeType library object. The set of drivers */
|
|
/* that are registered by this function is determined at build time. */
|
|
/* */
|
|
/* <Output> */
|
|
/* library :: A handle to a new library object. */
|
|
/* */
|
|
/* <Return> */
|
|
/* Error code. 0 means success. */
|
|
/* */
|
|
EXPORT_FUNC
|
|
FT_Error FT_Init_FreeType( FT_Library* library )
|
|
{
|
|
FT_Error error;
|
|
FT_Memory memory;
|
|
|
|
/* First of all, allocate a new system object -this function is part */
|
|
/* of the system-specific component, i.e. ftsystem.c */
|
|
memory = FT_New_Memory();
|
|
if (!memory)
|
|
{
|
|
FT_ERROR(( "FT_Init_FreeType:" ));
|
|
FT_ERROR(( " cannot find memory manager" ));
|
|
return FT_Err_Unimplemented_Feature;
|
|
}
|
|
|
|
/* builds a library out of it, then fill it with the set of */
|
|
/* default drivers.. */
|
|
error = FT_New_Library( memory, library );
|
|
if ( !error )
|
|
FT_Default_Drivers(*library);
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
/* END */
|