src/cid/cidobjs.c - third_party/freetype2 - Git at Google

 /***************************************************************************/
 /*                                                                         */
 /*  cidobjs.c                                                              */
 /*                                                                         */
 /*    CID objects manager (body).                                          */
 /*                                                                         */
 /*  Copyright 1996-2001, 2002 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.                                        */
 /*                                                                         */
 /***************************************************************************/


 #include <ft2build.h>
 #include FT_INTERNAL_DEBUG_H
 #include FT_INTERNAL_STREAM_H
 #include "cidgload.h"
 #include "cidload.h"
 #include FT_INTERNAL_POSTSCRIPT_NAMES_H
 #include FT_INTERNAL_POSTSCRIPT_AUX_H
 #include FT_INTERNAL_POSTSCRIPT_HINTS_H

 #include "ciderrs.h"


   /*************************************************************************/
   /*                                                                       */
   /* The macro FT_COMPONENT is used in trace mode.  It is an implicit      */
   /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log  */
   /* messages during execution.                                            */
   /*                                                                       */
 #undef  FT_COMPONENT
 #define FT_COMPONENT  trace_cidobjs


   /*************************************************************************/
   /*                                                                       */
   /*                            SLOT  FUNCTIONS                            */
   /*                                                                       */
   /*************************************************************************/

   FT_LOCAL_DEF( void )
   cid_slot_done( CID_GlyphSlot  slot )
   {
     slot->root.internal->glyph_hints = 0;
   }


   FT_LOCAL_DEF( FT_Error )
   cid_slot_init( CID_GlyphSlot  slot )
   {
     CID_Face          face;
     PSHinter_Service  pshinter;


     face     = (CID_Face)slot->root.face;
     pshinter = (PSHinter_Service)face->pshinter;

     if ( pshinter )
     {
       FT_Module  module;


       module = FT_Get_Module( slot->root.face->driver->root.library,
                               "pshinter" );
       if ( module )
       {
         T1_Hints_Funcs  funcs;


         funcs = pshinter->get_t1_funcs( module );
         slot->root.internal->glyph_hints = (void*)funcs;
       }
     }

     return 0;
   }


   /*************************************************************************/
   /*                                                                       */
   /*                           SIZE  FUNCTIONS                             */
   /*                                                                       */
   /*************************************************************************/


   static PSH_Globals_Funcs
   cid_size_get_globals_funcs( CID_Size  size )
   {
     CID_Face          face     = (CID_Face)size->root.face;
     PSHinter_Service  pshinter = (PSHinter_Service)face->pshinter;
     FT_Module         module;


     module = FT_Get_Module( size->root.face->driver->root.library,
                             "pshinter" );
     return ( module && pshinter && pshinter->get_globals_funcs )
            ? pshinter->get_globals_funcs( module )
            : 0;
   }


   FT_LOCAL_DEF( void )
   cid_size_done( CID_Size  size )
   {
     if ( size->root.internal )
     {
       PSH_Globals_Funcs  funcs;


       funcs = cid_size_get_globals_funcs( size );
       if ( funcs )
         funcs->destroy( (PSH_Globals)size->root.internal );

       size->root.internal = 0;
     }
   }


   FT_LOCAL_DEF( FT_Error )
   cid_size_init( CID_Size  size )
   {
     FT_Error           error = 0;
     PSH_Globals_Funcs  funcs = cid_size_get_globals_funcs( size );


     if ( funcs )
     {
       PSH_Globals   globals;
       CID_Face      face = (CID_Face)size->root.face;
       CID_FaceDict  dict = face->cid.font_dicts + face->root.face_index;
       PS_Private    priv = &dict->private_dict;


       error = funcs->create( size->root.face->memory, priv, &globals );
       if ( !error )
         size->root.internal = (FT_Size_Internal)(void*)globals;
     }

     return error;
   }


   FT_LOCAL_DEF( FT_Error )
   cid_size_reset( CID_Size  size )
   {
     PSH_Globals_Funcs  funcs = cid_size_get_globals_funcs( size );
     FT_Error           error = 0;


     if ( funcs )
       error = funcs->set_scale( (PSH_Globals)size->root.internal,
                                  size->root.metrics.x_scale,
                                  size->root.metrics.y_scale,
                                  0, 0 );
     return error;
   }


   /*************************************************************************/
   /*                                                                       */
   /*                           FACE  FUNCTIONS                             */
   /*                                                                       */
   /*************************************************************************/

   /*************************************************************************/
   /*                                                                       */
   /* <Function>                                                            */
   /*    cid_face_done                                                      */
   /*                                                                       */
   /* <Description>                                                         */
   /*    Finalizes a given face object.                                     */
   /*                                                                       */
   /* <Input>                                                               */
   /*    face :: A pointer to the face object to destroy.                   */
   /*                                                                       */
   FT_LOCAL_DEF( void )
   cid_face_done( CID_Face  face )
   {
     FT_Memory  memory;


     if ( face )
     {
       CID_FaceInfo  cid  = &face->cid;
       PS_FontInfo   info = &cid->font_info;


       memory = face->root.memory;

       /* release subrs */
       if ( face->subrs )
       {
         FT_Int  n;


         for ( n = 0; n < cid->num_dicts; n++ )
         {
           CID_Subrs  subr = face->subrs + n;


           if ( subr->code )
           {
             FT_FREE( subr->code[0] );
             FT_FREE( subr->code );
           }
         }

         FT_FREE( face->subrs );
       }

       /* release FontInfo strings */
       FT_FREE( info->version );
       FT_FREE( info->notice );
       FT_FREE( info->full_name );
       FT_FREE( info->family_name );
       FT_FREE( info->weight );

       /* release font dictionaries */
       FT_FREE( cid->font_dicts );
       cid->num_dicts = 0;

       /* release other strings */
       FT_FREE( cid->cid_font_name );
       FT_FREE( cid->registry );
       FT_FREE( cid->ordering );

       face->root.family_name = 0;
       face->root.style_name  = 0;
     }
   }


   /*************************************************************************/
   /*                                                                       */
   /* <Function>                                                            */
   /*    cid_face_init                                                      */
   /*                                                                       */
   /* <Description>                                                         */
   /*    Initializes a given CID face object.                               */
   /*                                                                       */
   /* <Input>                                                               */
   /*    stream     :: The source font stream.                              */
   /*                                                                       */
   /*    face_index :: The index of the font face in the resource.          */
   /*                                                                       */
   /*    num_params :: Number of additional generic parameters.  Ignored.   */
   /*                                                                       */
   /*    params     :: Additional generic parameters.  Ignored.             */
   /*                                                                       */
   /* <InOut>                                                               */
   /*    face       :: The newly built face object.                         */
   /*                                                                       */
   /* <Return>                                                              */
   /*    FreeType error code.  0 means success.                             */
   /*                                                                       */
   FT_LOCAL_DEF( FT_Error )
   cid_face_init( FT_Stream      stream,
                  CID_Face       face,
                  FT_Int         face_index,
                  FT_Int         num_params,
                  FT_Parameter*  params )
   {
     FT_Error          error;
     PSNames_Service   psnames;
     PSAux_Service     psaux;
     PSHinter_Service  pshinter;

     FT_UNUSED( num_params );
     FT_UNUSED( params );
     FT_UNUSED( face_index );
     FT_UNUSED( stream );


     face->root.num_faces = 1;

     psnames = (PSNames_Service)face->psnames;
     if ( !psnames )
     {
       psnames = (PSNames_Service)FT_Get_Module_Interface(
                   FT_FACE_LIBRARY( face ), "psnames" );

       face->psnames = psnames;
     }

     psaux = (PSAux_Service)face->psaux;
     if ( !psaux )
     {
       psaux = (PSAux_Service)FT_Get_Module_Interface(
                 FT_FACE_LIBRARY( face ), "psaux" );

       face->psaux = psaux;
     }

     pshinter = (PSHinter_Service)face->pshinter;
     if ( !pshinter )
     {
       pshinter = (PSHinter_Service)FT_Get_Module_Interface(
                    FT_FACE_LIBRARY( face ), "pshinter" );

       face->pshinter = pshinter;
     }

     /* open the tokenizer; this will also check the font format */
     if ( FT_STREAM_SEEK( 0 ) )
       goto Exit;

     error = cid_face_open( face );
     if ( error )
       goto Exit;

     /* if we just wanted to check the format, leave successfully now */
     if ( face_index < 0 )
       goto Exit;

     /* check the face index */
     if ( face_index != 0 )
     {
       FT_ERROR(( "cid_face_init: invalid face index\n" ));
       error = CID_Err_Invalid_Argument;
       goto Exit;
     }

     /* Now, load the font program into the face object */
     {
       /* Init the face object fields */
       /* Now set up root face fields */
       {
         FT_Face  root = (FT_Face)&face->root;


         root->num_glyphs   = face->cid.cid_count;
         root->num_charmaps = 0;

         root->face_index = face_index;
         root->face_flags = FT_FACE_FLAG_SCALABLE;

         root->face_flags |= FT_FACE_FLAG_HORIZONTAL;

         if ( face->cid.font_info.is_fixed_pitch )
           root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;

         /* XXX: TODO: add kerning with .afm support */

         /* get style name -- be careful, some broken fonts only */
         /* have a /FontName dictionary entry!                   */
         root->family_name = face->cid.font_info.family_name;
         if ( root->family_name )
         {
           char*  full   = face->cid.font_info.full_name;
           char*  family = root->family_name;

           while ( *family && *full == *family )
           {
             family++;
             full++;
           }

           root->style_name = ( *full == ' ' ) ? full + 1
                                               : (char *)"Regular";
         }
         else
         {
           /* do we have a `/FontName'? */
           if ( face->cid.cid_font_name )
           {
             root->family_name = face->cid.cid_font_name;
             root->style_name  = (char *)"Regular";
           }
         }

         /* no embedded bitmap support */
         root->num_fixed_sizes = 0;
         root->available_sizes = 0;

         root->bbox.xMin =   face->cid.font_bbox.xMin             >> 16;
         root->bbox.yMin =   face->cid.font_bbox.yMin             >> 16;
         root->bbox.xMax = ( face->cid.font_bbox.xMax + 0xFFFFU ) >> 16;
         root->bbox.yMax = ( face->cid.font_bbox.yMax + 0xFFFFU ) >> 16;

         if ( !root->units_per_EM )
           root->units_per_EM  = 1000;

         root->ascender  = (FT_Short)( root->bbox.yMax );
         root->descender = (FT_Short)( root->bbox.yMin );
         root->height    = (FT_Short)(
           ( ( root->ascender + root->descender ) * 12 ) / 10 );

         root->underline_position  = face->cid.font_info.underline_position;
         root->underline_thickness = face->cid.font_info.underline_thickness;

         root->internal->max_points   = 0;
         root->internal->max_contours = 0;
       }
     }

   Exit:
     return error;
   }


   /*************************************************************************/
   /*                                                                       */
   /* <Function>                                                            */
   /*    cid_driver_init                                                    */
   /*                                                                       */
   /* <Description>                                                         */
   /*    Initializes a given CID driver object.                             */
   /*                                                                       */
   /* <Input>                                                               */
   /*    driver :: A handle to the target driver object.                    */
   /*                                                                       */
   /* <Return>                                                              */
   /*    FreeType error code.  0 means success.                             */
   /*                                                                       */
   FT_LOCAL_DEF( FT_Error )
   cid_driver_init( CID_Driver  driver )
   {
     FT_UNUSED( driver );

     return CID_Err_Ok;
   }


   /*************************************************************************/
   /*                                                                       */
   /* <Function>                                                            */
   /*    cid_driver_done                                                    */
   /*                                                                       */
   /* <Description>                                                         */
   /*    Finalizes a given CID driver.                                      */
   /*                                                                       */
   /* <Input>                                                               */
   /*    driver :: A handle to the target CID driver.                       */
   /*                                                                       */
   FT_LOCAL_DEF( void )
   cid_driver_done( CID_Driver  driver )
   {
     FT_UNUSED( driver );
   }


 /* END */
	/***************************************************************************/
	/* */
	/* cidobjs.c */
	/* */
	/* CID objects manager (body). */
	/* */
	/* Copyright 1996-2001, 2002 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. */
	/* */
	/***************************************************************************/


	#include <ft2build.h>
	#include FT_INTERNAL_DEBUG_H
	#include FT_INTERNAL_STREAM_H
	#include "cidgload.h"
	#include "cidload.h"
	#include FT_INTERNAL_POSTSCRIPT_NAMES_H
	#include FT_INTERNAL_POSTSCRIPT_AUX_H
	#include FT_INTERNAL_POSTSCRIPT_HINTS_H

	#include "ciderrs.h"


	/*************************************************************************/
	/* */
	/* The macro FT_COMPONENT is used in trace mode. It is an implicit */
	/* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */
	/* messages during execution. */
	/* */
	#undef FT_COMPONENT
	#define FT_COMPONENT trace_cidobjs


	/*************************************************************************/
	/* */
	/* SLOT FUNCTIONS */
	/* */
	/*************************************************************************/

	FT_LOCAL_DEF( void )
	cid_slot_done( CID_GlyphSlot slot )
	{
	slot->root.internal->glyph_hints = 0;
	}


	FT_LOCAL_DEF( FT_Error )
	cid_slot_init( CID_GlyphSlot slot )
	{
	CID_Face face;
	PSHinter_Service pshinter;


	face = (CID_Face)slot->root.face;
	pshinter = (PSHinter_Service)face->pshinter;

	if ( pshinter )
	{
	FT_Module module;


	module = FT_Get_Module( slot->root.face->driver->root.library,
	"pshinter" );
	if ( module )
	{
	T1_Hints_Funcs funcs;


	funcs = pshinter->get_t1_funcs( module );
	slot->root.internal->glyph_hints = (void*)funcs;
	}
	}

	return 0;
	}


	/*************************************************************************/
	/* */
	/* SIZE FUNCTIONS */
	/* */
	/*************************************************************************/


	static PSH_Globals_Funcs
	cid_size_get_globals_funcs( CID_Size size )
	{
	CID_Face face = (CID_Face)size->root.face;
	PSHinter_Service pshinter = (PSHinter_Service)face->pshinter;
	FT_Module module;


	module = FT_Get_Module( size->root.face->driver->root.library,
	"pshinter" );
	return ( module && pshinter && pshinter->get_globals_funcs )
	? pshinter->get_globals_funcs( module )
	: 0;
	}


	FT_LOCAL_DEF( void )
	cid_size_done( CID_Size size )
	{
	if ( size->root.internal )
	{
	PSH_Globals_Funcs funcs;


	funcs = cid_size_get_globals_funcs( size );
	if ( funcs )
	funcs->destroy( (PSH_Globals)size->root.internal );

	size->root.internal = 0;
	}
	}


	FT_LOCAL_DEF( FT_Error )
	cid_size_init( CID_Size size )
	{
	FT_Error error = 0;
	PSH_Globals_Funcs funcs = cid_size_get_globals_funcs( size );


	if ( funcs )
	{
	PSH_Globals globals;
	CID_Face face = (CID_Face)size->root.face;
	CID_FaceDict dict = face->cid.font_dicts + face->root.face_index;
	PS_Private priv = &dict->private_dict;


	error = funcs->create( size->root.face->memory, priv, &globals );
	if ( !error )
	size->root.internal = (FT_Size_Internal)(void*)globals;
	}

	return error;
	}


	FT_LOCAL_DEF( FT_Error )
	cid_size_reset( CID_Size size )
	{
	PSH_Globals_Funcs funcs = cid_size_get_globals_funcs( size );
	FT_Error error = 0;


	if ( funcs )
	error = funcs->set_scale( (PSH_Globals)size->root.internal,
	size->root.metrics.x_scale,
	size->root.metrics.y_scale,
	0, 0 );
	return error;
	}


	/*************************************************************************/
	/* */
	/* FACE FUNCTIONS */
	/* */
	/*************************************************************************/

	/*************************************************************************/
	/* */
	/* <Function> */
	/* cid_face_done */
	/* */
	/* <Description> */
	/* Finalizes a given face object. */
	/* */
	/* <Input> */
	/* face :: A pointer to the face object to destroy. */
	/* */
	FT_LOCAL_DEF( void )
	cid_face_done( CID_Face face )
	{
	FT_Memory memory;


	if ( face )
	{
	CID_FaceInfo cid = &face->cid;
	PS_FontInfo info = &cid->font_info;


	memory = face->root.memory;

	/* release subrs */
	if ( face->subrs )
	{
	FT_Int n;


	for ( n = 0; n < cid->num_dicts; n++ )
	{
	CID_Subrs subr = face->subrs + n;


	if ( subr->code )
	{
	FT_FREE( subr->code[0] );
	FT_FREE( subr->code );
	}
	}

	FT_FREE( face->subrs );
	}

	/* release FontInfo strings */
	FT_FREE( info->version );
	FT_FREE( info->notice );
	FT_FREE( info->full_name );
	FT_FREE( info->family_name );
	FT_FREE( info->weight );

	/* release font dictionaries */
	FT_FREE( cid->font_dicts );
	cid->num_dicts = 0;

	/* release other strings */
	FT_FREE( cid->cid_font_name );
	FT_FREE( cid->registry );
	FT_FREE( cid->ordering );

	face->root.family_name = 0;
	face->root.style_name = 0;
	}
	}


	/*************************************************************************/
	/* */
	/* <Function> */
	/* cid_face_init */
	/* */
	/* <Description> */
	/* Initializes a given CID face object. */
	/* */
	/* <Input> */
	/* stream :: The source font stream. */
	/* */
	/* face_index :: The index of the font face in the resource. */
	/* */
	/* num_params :: Number of additional generic parameters. Ignored. */
	/* */
	/* params :: Additional generic parameters. Ignored. */
	/* */
	/* <InOut> */
	/* face :: The newly built face object. */
	/* */
	/* <Return> */
	/* FreeType error code. 0 means success. */
	/* */
	FT_LOCAL_DEF( FT_Error )
	cid_face_init( FT_Stream stream,
	CID_Face face,
	FT_Int face_index,
	FT_Int num_params,
	FT_Parameter* params )
	{
	FT_Error error;
	PSNames_Service psnames;
	PSAux_Service psaux;
	PSHinter_Service pshinter;

	FT_UNUSED( num_params );
	FT_UNUSED( params );
	FT_UNUSED( face_index );
	FT_UNUSED( stream );


	face->root.num_faces = 1;

	psnames = (PSNames_Service)face->psnames;
	if ( !psnames )
	{
	psnames = (PSNames_Service)FT_Get_Module_Interface(
	FT_FACE_LIBRARY( face ), "psnames" );

	face->psnames = psnames;
	}

	psaux = (PSAux_Service)face->psaux;
	if ( !psaux )
	{
	psaux = (PSAux_Service)FT_Get_Module_Interface(
	FT_FACE_LIBRARY( face ), "psaux" );

	face->psaux = psaux;
	}

	pshinter = (PSHinter_Service)face->pshinter;
	if ( !pshinter )
	{
	pshinter = (PSHinter_Service)FT_Get_Module_Interface(
	FT_FACE_LIBRARY( face ), "pshinter" );

	face->pshinter = pshinter;
	}

	/* open the tokenizer; this will also check the font format */
	if ( FT_STREAM_SEEK( 0 ) )
	goto Exit;

	error = cid_face_open( face );
	if ( error )
	goto Exit;

	/* if we just wanted to check the format, leave successfully now */
	if ( face_index < 0 )
	goto Exit;

	/* check the face index */
	if ( face_index != 0 )
	{
	FT_ERROR(( "cid_face_init: invalid face index\n" ));
	error = CID_Err_Invalid_Argument;
	goto Exit;
	}

	/* Now, load the font program into the face object */
	{
	/* Init the face object fields */
	/* Now set up root face fields */
	{
	FT_Face root = (FT_Face)&face->root;


	root->num_glyphs = face->cid.cid_count;
	root->num_charmaps = 0;

	root->face_index = face_index;
	root->face_flags = FT_FACE_FLAG_SCALABLE;

	root->face_flags \|= FT_FACE_FLAG_HORIZONTAL;

	if ( face->cid.font_info.is_fixed_pitch )
	root->face_flags \|= FT_FACE_FLAG_FIXED_WIDTH;

	/* XXX: TODO: add kerning with .afm support */

	/* get style name -- be careful, some broken fonts only */
	/* have a /FontName dictionary entry! */
	root->family_name = face->cid.font_info.family_name;
	if ( root->family_name )
	{
	char* full = face->cid.font_info.full_name;
	char* family = root->family_name;

	while ( family && full == *family )
	{
	family++;
	full++;
	}

	root->style_name = ( *full == ' ' ) ? full + 1
	: (char *)"Regular";
	}
	else
	{
	/* do we have a `/FontName'? */
	if ( face->cid.cid_font_name )
	{
	root->family_name = face->cid.cid_font_name;
	root->style_name = (char *)"Regular";
	}
	}

	/* no embedded bitmap support */
	root->num_fixed_sizes = 0;
	root->available_sizes = 0;

	root->bbox.xMin = face->cid.font_bbox.xMin >> 16;
	root->bbox.yMin = face->cid.font_bbox.yMin >> 16;
	root->bbox.xMax = ( face->cid.font_bbox.xMax + 0xFFFFU ) >> 16;
	root->bbox.yMax = ( face->cid.font_bbox.yMax + 0xFFFFU ) >> 16;

	if ( !root->units_per_EM )
	root->units_per_EM = 1000;

	root->ascender = (FT_Short)( root->bbox.yMax );
	root->descender = (FT_Short)( root->bbox.yMin );
	root->height = (FT_Short)(
	( ( root->ascender + root->descender ) * 12 ) / 10 );

	root->underline_position = face->cid.font_info.underline_position;
	root->underline_thickness = face->cid.font_info.underline_thickness;

	root->internal->max_points = 0;
	root->internal->max_contours = 0;
	}
	}

	Exit:
	return error;
	}


	/*************************************************************************/
	/* */
	/* <Function> */
	/* cid_driver_init */
	/* */
	/* <Description> */
	/* Initializes a given CID driver object. */
	/* */
	/* <Input> */
	/* driver :: A handle to the target driver object. */
	/* */
	/* <Return> */
	/* FreeType error code. 0 means success. */
	/* */
	FT_LOCAL_DEF( FT_Error )
	cid_driver_init( CID_Driver driver )
	{
	FT_UNUSED( driver );

	return CID_Err_Ok;
	}


	/*************************************************************************/
	/* */
	/* <Function> */
	/* cid_driver_done */
	/* */
	/* <Description> */
	/* Finalizes a given CID driver. */
	/* */
	/* <Input> */
	/* driver :: A handle to the target CID driver. */
	/* */
	FT_LOCAL_DEF( void )
	cid_driver_done( CID_Driver driver )
	{
	FT_UNUSED( driver );
	}


	/* END */