forked from minhngoc25a/freetype2
[vf] Add `vf_driver_class' functions.
Note: Does not compile.
This commit is contained in:
Parth Wazurkar
parent
30679ffae9
commit
18a923c039
251
src/vf/vfdrivr.c
251
src/vf/vfdrivr.c
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@ -21,6 +21,9 @@
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#include FT_INTERNAL_STREAM_H
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#include FT_INTERNAL_OBJECTS_H
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#include FT_TRUETYPE_IDS_H
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#include FT_INTERNAL_TFM_H
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#include FT_SERVICE_VF_H
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#include FT_SERVICE_FONT_FORMAT_H
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@ -133,7 +136,17 @@
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FT_CALLBACK_DEF( void )
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VF_Face_Done( FT_Face vfface ) /* VF_Face */
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{
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/* TO-DO */
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VF_Face face = (VF_Face) vfface;
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FT_Memory memory;
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if ( !face )
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return;
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memory = FT_FACE_MEMORY( face );
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FT_FREE( vfface->available_sizes );
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vf_free_font( face );
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}
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@ -144,21 +157,184 @@
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FT_Int num_params,
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FT_Parameter* params )
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{
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/* TO-DO */
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VF_Face face = (VF_Face) vfface;
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FT_Error error = FT_Err_Ok;
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FT_Memory memory = FT_FACE_MEMORY( face );
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TFM_Service tfm;
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FT_UNUSED( num_params );
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FT_UNUSED( params );
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face->tfm = FT_Get_Module_Interface( FT_FACE_LIBRARY( face ), "tfm" );
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tfm = (TFM_Service) face->tfm;
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if ( !tfm )
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{
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FT_ERROR(( "vf_Face_Init: cannot access `tfm' module\n" ));
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error = FT_THROW( Missing_Module );
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goto Exit;
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}
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FT_TRACE2(( "VF driver\n" ));
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/* load font */
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error = vf_read_info( stream, memory, &go );
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if ( FT_ERR_EQ( error, Unknown_File_Format ) )
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{
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FT_TRACE2(( " not a vf file\n" ));
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goto Fail;
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}
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else if ( error )
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goto Exit;
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/* we have a vf font: let's construct the face object */
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/* sanity check */
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/* we now need to fill the root FT_Face fields */
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/* with relevant information */
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vfface->num_faces = 1;
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vfface->face_index = 0;
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vfface->face_flags |= FT_FACE_FLAG_FIXED_SIZES |
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FT_FACE_FLAG_HORIZONTAL ;
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/*
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* XXX: TO-DO: vfface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH;
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*/
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vfface->family_name = NULL;
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vfface->num_glyphs = (FT_Long) 999; /* TO-DO*/
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FT_TRACE4(( " number of glyphs: allocated %d\n", vfface->num_glyphs ));
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if ( vfface->num_glyphs <= 0 )
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{
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FT_ERROR(( "vf_Face_Init: glyphs not allocated\n" ));
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error = FT_THROW( Invalid_File_Format );
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goto Exit;
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}
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vfface->num_fixed_sizes = 1;
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if ( FT_NEW_ARRAY( vfface->available_sizes, 1 ) )
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goto Exit;
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{
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FT_Bitmap_Size* bsize = vfface->available_sizes;
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FT_UShort x_res, y_res;
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/* Add Dummy values */
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/* To be modified */
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bsize->height = (FT_Short) 999 ;
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bsize->width = (FT_Short) 999 ;
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bsize->size = (FT_Pos) 999 ;
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bsize->y_ppem = (FT_Pos) 999 ;
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bsize->x_ppem = (FT_Pos) 999 ;
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}
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/* set up charmap */
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{
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/* FT_Bool unicode_charmap ; */
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/*
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* XXX: TO-DO
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* Currently the unicode_charmap is set to `0'
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* The functionality of extracting coding scheme
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* will be added.
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*/
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}
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/* Charmaps */
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{
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FT_CharMapRec charmap;
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FT_Bool unicode_charmap = 0;
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charmap.face = FT_FACE( face );
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charmap.encoding = FT_ENCODING_NONE;
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charmap.platform_id = TT_PLATFORM_APPLE_UNICODE;
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charmap.encoding_id = TT_APPLE_ID_DEFAULT;
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if( unicode_charmap )
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{
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/* Unicode Charmap */
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charmap.encoding = FT_ENCODING_UNICODE;
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charmap.platform_id = TT_PLATFORM_MICROSOFT;
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charmap.encoding_id = TT_MS_ID_UNICODE_CS;
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}
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error = FT_CMap_New( &vf_cmap_class, NULL, &charmap, NULL );
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if ( error )
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goto Exit;
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}
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Exit:
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return error;
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Fail:
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vf_Face_Done( vfface );
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return FT_THROW( Unknown_File_Format );
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}
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FT_CALLBACK_DEF( FT_Error )
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VF_Size_Select( FT_Size size,
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FT_ULong strike_index )
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{
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/* TO-DO */
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VF_Face face = (VF_Face)size->face;
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FT_UNUSED( strike_index );
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FT_Select_Metrics( size->face, 0 );
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/* Add Dummy values */
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/* To be modified */
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size->metrics.ascender = 999 * 64;
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size->metrics.descender = 999 * 64;
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size->metrics.max_advance = 999 * 64;
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return FT_Err_Ok;
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}
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FT_CALLBACK_DEF( FT_Error )
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VF_Size_Request( FT_Size size,
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FT_Size_Request req )
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{
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/* TO-DO */
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VF_Face face = (VF_Face) size->face;
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FT_Bitmap_Size* bsize = size->face->available_sizes;
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FT_Error error = FT_ERR( Invalid_Pixel_Size );
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FT_Long height;
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height = FT_REQUEST_HEIGHT( req );
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height = ( height + 32 ) >> 6;
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switch ( req->type )
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{
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case FT_SIZE_REQUEST_TYPE_NOMINAL:
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if ( height == ( ( bsize->y_ppem + 32 ) >> 6 ) )
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error = FT_Err_Ok;
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break;
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case FT_SIZE_REQUEST_TYPE_REAL_DIM:
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if ( height == 999 ) /* TO-DO */
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error = FT_Err_Ok;
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break;
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default:
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error = FT_THROW( Unimplemented_Feature );
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break;
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}
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if ( error )
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return error;
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else
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return VF_Size_Select( size, 0 );
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}
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@ -169,7 +345,70 @@
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FT_UInt glyph_index,
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FT_Int32 load_flags )
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{
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/* TO-DO */
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VF_Face vf = (VF_Face) FT_SIZE_FACE( size );
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FT_Face face = FT_FACE ( vf );
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FT_Error error = FT_Err_Ok;
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FT_Bitmap* bitmap = &slot->bitmap;
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FT_UNUSED( load_flags );
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if ( !face )
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{
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error = FT_THROW( Invalid_Face_Handle );
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goto Exit;
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}
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/* slot, bitmap => freetype, bm => gflib */
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bitmap->rows = 999; /* TO-DO */
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bitmap->width = 999; /* TO-DO */
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bitmap->pixel_mode = FT_PIXEL_MODE_MONO;
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bitmap->pitch = (FT_Int) 999 ; /* TO-DO */
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/* note: we don't allocate a new array to hold the bitmap; */
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/* we can simply point to it */
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/* ft_glyphslot_set_bitmap( slot, bm->bitmap ); */ /* TO-DO */
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slot->format = FT_GLYPH_FORMAT_BITMAP;
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slot->bitmap_left = 999 ; /* TO-DO */
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slot->bitmap_top = 999 ; /* TO-DO */
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slot->metrics.horiAdvance = (FT_Pos) 999 * 64; /* TO-DO */
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slot->metrics.horiBearingX = (FT_Pos) 999 * 64; /* TO-DO */
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slot->metrics.horiBearingY = (FT_Pos) 999 * 64; /* TO-DO */
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slot->metrics.width = (FT_Pos) ( 999 * 64 ); /* TO-DO */
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slot->metrics.height = (FT_Pos) ( 999 * 64 ); /* TO-DO */
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ft_synthesize_vertical_metrics( &slot->metrics, 999 * 64 ); /* TO-DO */
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Exit:
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return error;
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}
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/*
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*
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* SERVICES LIST
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*
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*/
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static const FT_ServiceDescRec vf_services[] =
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{
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{ FT_SERVICE_ID_VF, NULL },
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{ FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_VF },
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{ NULL, NULL }
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};
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FT_CALLBACK_DEF( FT_Module_Interface )
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vf_driver_requester( FT_Module module,
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const char* name )
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{
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FT_UNUSED( module );
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return ft_service_list_lookup( vf_services, name );
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}
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@ -189,7 +428,7 @@
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NULL, /* FT_Module_Constructor module_init */
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NULL, /* FT_Module_Destructor module_done */
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NULL /* FT_Module_Requester get_interface */
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vf_driver_requester /* FT_Module_Requester get_interface */
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},
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sizeof ( VF_FaceRec ),
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