diff options
Diffstat (limited to 'libXfont/src/Speedo/do_char.c')
| -rw-r--r-- | libXfont/src/Speedo/do_char.c | 809 |
1 files changed, 0 insertions, 809 deletions
diff --git a/libXfont/src/Speedo/do_char.c b/libXfont/src/Speedo/do_char.c deleted file mode 100644 index 076b41366..000000000 --- a/libXfont/src/Speedo/do_char.c +++ /dev/null @@ -1,809 +0,0 @@ -/* $Xorg: do_char.c,v 1.3 2000/08/17 19:46:24 cpqbld Exp $ */ - -/* - -Copyright 1989-1991, Bitstream Inc., Cambridge, MA. -You are hereby granted permission under all Bitstream propriety rights to -use, copy, modify, sublicense, sell, and redistribute the Bitstream Speedo -software and the Bitstream Charter outline font for any purpose and without -restrictions; provided, that this notice is left intact on all copies of such -software or font and that Bitstream's trademark is acknowledged as shown below -on all unmodified copies of such font. - -BITSTREAM CHARTER is a registered trademark of Bitstream Inc. - - -BITSTREAM INC. DISCLAIMS ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING -WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A -PARTICULAR PURPOSE. BITSTREAM SHALL NOT BE LIABLE FOR ANY DIRECT OR INDIRECT -DAMAGES, INCLUDING BUT NOT LIMITED TO LOST PROFITS, LOST DATA, OR ANY OTHER -INCIDENTAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF OR IN ANY WAY CONNECTED -WITH THE SPEEDO SOFTWARE OR THE BITSTREAM CHARTER OUTLINE FONT. - -*/ -/* $XFree86: xc/lib/font/Speedo/do_char.c,v 1.3 2001/01/17 19:43:17 dawes Exp $ */ - -/***************************** D O - C H A R . C ***************************** - * * - * This is the top level module for processing one simple or composite * - * character. - * * - ****************************************************************************/ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include "spdo_prv.h" /* General definitions for Speedo */ - -#define DEBUG 0 - -#if DEBUG -#include <stdio.h> -#define SHOW(X) printf("X = %d\n", X) -#else -#define SHOW(X) -#endif - -/***** GLOBAL VARIABLES *****/ - -/***** GLOBAL FUNCTIONS *****/ - -/***** EXTERNAL VARIABLES *****/ - -/***** EXTERNAL FUNCTIONS *****/ - -/***** STATIC VARIABLES *****/ - -/***** STATIC FUNCTIONS *****/ - -static boolean sp_make_simp_char(PROTO_DECL2 ufix8 FONTFAR *pointer,ufix8 format); -static boolean sp_make_comp_char(PROTO_DECL2 ufix8 FONTFAR *pointer); -static ufix8 FONTFAR *sp_get_char_org(PROTO_DECL2 ufix16 char_index,boolean top_level); -static fix15 sp_get_posn_arg(PROTO_DECL2 ufix8 FONTFAR *STACKFAR *ppointer,ufix8 format); -static fix15 sp_get_scale_arg(PROTO_DECL2 ufix8 FONTFAR *STACKFAR *ppointer,ufix8 format); - - -#if INCL_METRICS -FUNCTION fix31 get_char_width( -GDECL -ufix16 char_index) /* Index to character in char directory */ -/* - * Returns character set width for specified character index in currently - * selected font in units of 1/65536 em. - * Reports Error 10 and returns 0 if no font selected. - * Reports Error 12 and returns 0 if character data not available. - */ -{ -ufix8 FONTFAR *pointer; /* Pointer to character data */ -fix31 set_width; /* Set width of character */ - -if (!sp_globals.specs_valid) /* Font specs not defined? */ - { - report_error(10); /* Report font not specified */ - return (fix31)0; /* Return zero character width */ - } - -pointer = sp_get_char_org(char_index, TRUE); /* Get pointer to character data */ -if (pointer == NULL) /* Character data not available? */ - { - report_error(12); /* Report character data not avail */ - return (fix31)0; /* Return zero character width */ - } - -pointer += 2; /* Skip over character id */ -set_width = (fix31)NEXT_WORD(pointer); /* Read set width and Convert units */ -set_width = ((set_width << 16) + (sp_globals.metric_resolution >> 1)) / sp_globals.metric_resolution; -return set_width; /* Return in 1/65536 em units */ -} -#endif - -#if INCL_METRICS -#ifdef old -FUNCTION boolean get_char_bbox( -GDECL -ufix16 char_index, -bbox_t *bbox) -{ -/* - * returns true if character exists, false if it doesn't - * provides transformed character bounding box in 1/65536 pixels - * in the provided bbox_t structure. Bounding box may be - * conservative in the event that the transformation is not - * normal or the character is compound. - */ - -ufix8 FONTFAR *pointer; -fix15 tmp; -point_t Pmin, Pmax; - -#if REENTRANT_ALLOC -plaid_t plaid; -sp_globals.plaid = &plaid; -#endif - -if (!sp_globals.specs_valid) /* Font specs not defined? */ - { - report_error(10); /* Report font not specified */ - return FALSE; /* Error return */ - } - -init_tcb(); /* Initialize transformation control block */ - -pointer = sp_get_char_org(char_index, TRUE); /* Point to start of character data */ -if (pointer == NULL) /* Character data not available? */ - { - report_error(12); /* Report character data not avail */ - return FALSE; /* Error return */ - } - -pointer += 2; /* Skip over character id */ -tmp = NEXT_WORD(pointer); /* Read set width */ - -tmp = NEXT_BYTE(pointer); -if (tmp & BIT1) /* Optional data in header? */ - { - tmp = (ufix8)NEXT_BYTE(pointer); /* Read size of optional data */ - pointer += tmp; /* Skip optional data */ - } - -pointer = plaid_tcb(pointer, tmp); /* Process plaid data */ -pointer = read_bbox(pointer, &Pmin, &Pmax,(boolean)FALSE); /* Read bounding box */ -bbox->xmin = (fix31)Pmin.x << sp_globals.poshift; -bbox->xmax = (fix31)Pmax.x << sp_globals.poshift; -bbox->ymin = (fix31)Pmin.y << sp_globals.poshift; -bbox->ymax = (fix31)Pmax.y << sp_globals.poshift; -return TRUE; -} - -#else /* new code, 4/25/91 */ - -FUNCTION boolean get_char_bbox( -GDECL -ufix16 char_index, -bbox_t *bbox) -{ -/* - * returns true if character exists, false if it doesn't - * provides transformed character bounding box in 1/65536 pixels - * in the provided bbox_t structure. Bounding box may be - * conservative in the event that the transformation is not - * normal or the character is compound. - */ - -ufix8 FONTFAR *pointer; -fix15 tmp; -fix15 format; -ufix16 pix_adj; -point_t Pmin, Pmax; - -#if REENTRANT_ALLOC -plaid_t plaid; -sp_globals.plaid = &plaid; -#endif - -if (!sp_globals.specs_valid) /* Font specs not defined? */ - { - report_error(10); /* Report font not specified */ - return FALSE; /* Error return */ - } - -init_tcb(); /* Initialize transformation control block */ - -pointer = sp_get_char_org(char_index, TRUE); /* Point to start of character data */ -if (pointer == NULL) /* Character data not available? */ - { - report_error(12); /* Report character data not avail */ - return FALSE; /* Error return */ - } - -pointer += 2; /* Skip over character id */ -tmp = NEXT_WORD(pointer); /* Read set width */ - -format = NEXT_BYTE(pointer); -if (format & BIT1) /* Optional data in header? */ - { - tmp = (ufix8)NEXT_BYTE(pointer); /* Read size of optional data */ - pointer += tmp; /* Skip optional data */ - } - -if (format & BIT0) - { - pix_adj = sp_globals.onepix << 1; /* Allow 2 pixel expansion ... */ - } -else - { - pix_adj = 0; - } - -pointer = plaid_tcb(pointer, format); /* Process plaid data */ -pointer = read_bbox(pointer, &Pmin, &Pmax,(boolean)FALSE); /* Read bounding box */ - -Pmin.x -= pix_adj; /* ... of components of ... */ -Pmin.y -= pix_adj; /* ... compound ... */ -Pmax.x += pix_adj; /* ... character ... */ -Pmax.y += pix_adj; /* ... bounding box. */ - - -bbox->xmin = (fix31)Pmin.x << sp_globals.poshift; -bbox->xmax = (fix31)Pmax.x << sp_globals.poshift; -bbox->ymin = (fix31)Pmin.y << sp_globals.poshift; -bbox->ymax = (fix31)Pmax.y << sp_globals.poshift; -return TRUE; -} -#endif /* new code */ - -#endif - - -#if INCL_ISW -FUNCTION boolean make_char_isw( -GDECL -ufix16 char_index, -ufix32 imported_setwidth) -{ -fix15 xmin; /* Minimum X ORU value in font */ -fix15 xmax; /* Maximum X ORU value in font */ -fix15 ymin; /* Minimum Y ORU value in font */ -fix15 ymax; /* Maximum Y ORU value in font */ -ufix16 return_value; - -sp_globals.import_setwidth_act = TRUE; -/* convert imported width to orus */ -sp_globals.imported_width = (sp_globals.metric_resolution * - imported_setwidth) >> 16; -return_value = do_make_char(char_index); - -if (sp_globals.isw_modified_constants) - { - /* reset fixed point constants */ - xmin = read_word_u(sp_globals.font_org + FH_FXMIN); - ymin = read_word_u(sp_globals.font_org + FH_FYMIN); - ymax = read_word_u(sp_globals.font_org + FH_FYMAX); - sp_globals.constr.data_valid = FALSE; - xmax = read_word_u(sp_globals.font_org + FH_FXMAX); - if (!setup_consts(xmin,xmax,ymin,ymax)) - { - report_error(3); /* Requested specs out of range */ - return FALSE; - } - } -return (return_value); -} - -FUNCTION boolean make_char( -GDECL -ufix16 char_index) /* Index to character in char directory */ -{ -sp_globals.import_setwidth_act = FALSE; -return (do_make_char(char_index)); -} - -FUNCTION static boolean do_make_char(GDECL ufix16 char_index) -#else -FUNCTION boolean make_char(GDECL ufix16 char_index) -#endif -/* - * Outputs specified character using the currently selected font and - * scaling and output specifications. - * Reports Error 10 and returns FALSE if no font specifications - * previously set. - * Reports Error 12 and returns FALSE if character data not available. - */ -{ -ufix8 FONTFAR *pointer; /* Pointer to character data */ -fix15 x_orus; -fix15 tmpfix15; -ufix8 format; - -#if INCL_ISW -sp_globals.isw_modified_constants = FALSE; -#endif - -#if REENTRANT_ALLOC - -plaid_t plaid; - -#if INCL_BLACK || INCL_SCREEN || INCL_2D -intercepts_t intercepts; -sp_globals.intercepts = &intercepts; -#endif - -sp_globals.plaid = &plaid; -#endif - -if (!sp_globals.specs_valid) /* Font specs not defined? */ - { - report_error(10); /* Report font not specified */ - return FALSE; /* Error return */ - } - -#if INCL_MULTIDEV -#if INCL_OUTLINE -if (sp_globals.output_mode == MODE_OUTLINE && !sp_globals.outline_device_set) - { - report_error(2); - return FALSE; - } -else -#endif - if (!sp_globals.bitmap_device_set) - { - report_error(2); - return FALSE; - } -#endif - - -init_tcb(); /* Initialize transformation control block */ - -pointer = sp_get_char_org(char_index, TRUE); /* Point to start of character data */ -SHOW(pointer); -if (pointer == NULL) /* Character data not available? */ - { - report_error(12); /* Report character data not avail */ - return FALSE; /* Error return */ - } - -pointer += 2; /* Skip over character id */ -x_orus = NEXT_WORD(pointer); /* Read set width */ -#if INCL_SQUEEZING || INCL_ISW -sp_globals.setwidth_orus = x_orus; -#endif - -#if INCL_ISW -if (sp_globals.import_setwidth_act) - x_orus = sp_globals.imported_width; -#endif -sp_globals.Psw.x = (fix15)((fix31) - (((fix31)x_orus * (sp_globals.specs.xxmult>>16) + - ( ((fix31)x_orus * (sp_globals.specs.xxmult&0xffffL) )>>16) - ) << sp_globals.pixshift) / sp_globals.metric_resolution); - -sp_globals.Psw.y = (fix15)( - (fix31)( - ((fix31)x_orus * (sp_globals.specs.yxmult>>16) + - ( ((fix31)x_orus * (sp_globals.specs.yxmult&0xffffL) )>>16) - ) << sp_globals.pixshift) / sp_globals.metric_resolution); - -format = NEXT_BYTE(pointer); -if (format & BIT1) /* Optional data in header? */ - { - tmpfix15 = (ufix8)NEXT_BYTE(pointer); /* Read size of optional data */ - pointer += tmpfix15; /* Skip optional data */ - } -if (format & BIT0) - { - return sp_make_comp_char(pointer); /* Output compound character */ - } -else - { - return sp_make_simp_char(pointer, format); /* Output simple character */ - } -} - -FUNCTION static boolean sp_make_simp_char( -GDECL -ufix8 FONTFAR *pointer, /* Pointer to first byte of position argument */ -ufix8 format) /* Character format byte */ -/* - * Called by sp_make_char() to output a simple (non-compound) character. - * Returns TRUE on completion. - */ -{ -point_t Pmin, Pmax; /* Transformed corners of bounding box */ -#if INCL_SQUEEZING || INCL_ISW -ufix8 FONTFAR *save_pointer; -#endif -#if INCL_ISW -fix31 char_width; -fix31 isw_scale; -#endif - -#if INCL_SQUEEZING -sp_globals.squeezing_compound = FALSE; -if ((sp_globals.pspecs->flags & SQUEEZE_LEFT) || - (sp_globals.pspecs->flags & SQUEEZE_RIGHT) || - (sp_globals.pspecs->flags & SQUEEZE_TOP) || - (sp_globals.pspecs->flags & SQUEEZE_BOTTOM) ) - { - /* get the bounding box data before processing the character */ - save_pointer = pointer; - preview_bounding_box (pointer, format); - pointer = save_pointer; - } -#endif -#if (INCL_ISW) -if (sp_globals.import_setwidth_act) - { - save_pointer = pointer; - preview_bounding_box (pointer, format); - pointer = save_pointer; - /* make sure I'm not going to get fixed point overflow */ - isw_scale = compute_isw_scale(); - if (sp_globals.bbox_xmin_orus < 0) - char_width = SQUEEZE_MULT((sp_globals.bbox_xmax_orus - sp_globals.bbox_xmin_orus), isw_scale); - else - char_width = SQUEEZE_MULT(sp_globals.bbox_xmax_orus, isw_scale); - if (char_width >= sp_globals.isw_xmax) - if (!reset_xmax(char_width)) - return FALSE; - } -#endif -pointer = plaid_tcb(pointer, format); /* Process plaid data */ -pointer = read_bbox(pointer, &Pmin, &Pmax, FALSE); /* Read bounding box */ -if (fn_begin_char(sp_globals.Psw, Pmin, Pmax)) /* Signal start of character output */ - { - do - { - proc_outl_data(pointer); /* Process outline data */ - } - while (!fn_end_char()); /* Repeat if not done */ - } -return TRUE; -} - -FUNCTION static boolean sp_make_comp_char( -GDECL -ufix8 FONTFAR *pointer) /* Pointer to first byte of position argument */ -/* - * Called by sp_make_char() to output a compound character. - * Returns FALSE if data for any sub-character is not available. - * Returns TRUE if output completed with no error. - */ -{ -point_t Pmin, Pmax; /* Transformed corners of bounding box */ -point_t Pssw; /* Transformed escapement vector */ -ufix8 FONTFAR *pointer_sav; /* Saved pointer to compound character data */ -ufix8 FONTFAR *sub_pointer; /* Pointer to sub-character data */ -ufix8 format; /* Format of DOCH instruction */ -ufix16 sub_char_index; /* Index to sub-character in character directory */ -fix15 x_posn; /* X position of sub-character (outline res units) */ -fix15 y_posn; /* Y position of sub-character (outline res units) */ -fix15 x_scale; /* X scale factor of sub-character (scale units) */ -fix15 y_scale; /* Y scale factor of sub-character (scale units) */ -fix15 tmpfix15; /* Temporary workspace */ -fix15 x_orus; /* Set width in outline resolution units */ -fix15 pix_adj; /* Pixel adjustment to compound char bounding box */ -#if INCL_SQUEEZING -fix31 x_factor, x_offset, top_scale, bottom_scale; -boolean squeezed_x, squeezed_y; -#endif -#if INCL_SQUEEZING || INCL_ISW -fix15 x_offset_pix; -#endif -#if INCL_ISW -fix31 char_width; -fix31 isw_scale; -#endif - - -#if INCL_SQUEEZING -sp_globals.squeezing_compound = TRUE; -#endif -pointer = read_bbox(pointer, &Pmin, &Pmax, TRUE); /* Read bounding box data */ -pix_adj = sp_globals.onepix << 1; /* Allow 2 pixel expansion ... */ -Pmin.x -= pix_adj; /* ... of components of ... */ -Pmin.y -= pix_adj; /* ... compound ... */ -Pmax.x += pix_adj; /* ... character ... */ -Pmax.y += pix_adj; /* ... bounding box. */ - -#if INCL_SQUEEZING -/* scale the bounding box if necessary before calling begin_char */ -squeezed_x = calculate_x_scale(&x_factor, &x_offset, 0); -squeezed_y = calculate_y_scale(&top_scale, &bottom_scale,0,0); - -if (squeezed_x) - { /* scale the x coordinates of the bbox */ - x_offset_pix = (fix15)(((x_offset >> 16) * sp_globals.tcb0.xppo) - >> sp_globals.mpshift); - if ((x_offset_pix >0) && (x_offset_pix < sp_globals.onepix)) - x_offset_pix = sp_globals.onepix; - Pmin.x = SQUEEZE_MULT (x_factor, Pmin.x) + x_offset_pix - pix_adj; - Pmax.x = SQUEEZE_MULT (x_factor, Pmax.x) + x_offset_pix + pix_adj; - } -if (squeezed_y) - { /* scale the y coordinates of the bbox */ - if ((Pmin.y) < 0) - Pmin.y = SQUEEZE_MULT (bottom_scale, Pmin.y) - pix_adj; - else - Pmin.y = SQUEEZE_MULT (top_scale, Pmin.y) - pix_adj; - if ((Pmax.y) < 0) - Pmax.y = SQUEEZE_MULT (bottom_scale, Pmax.y) + pix_adj; - else - Pmax.y = SQUEEZE_MULT (top_scale, Pmax.y) + pix_adj; - } -#endif -#if (INCL_ISW) -if (sp_globals.import_setwidth_act) - { - /* make sure I'm not going to get fixed point overflow */ - isw_scale = ((fix31)sp_globals.imported_width << 16)/ - (fix31)sp_globals.setwidth_orus; - char_width = SQUEEZE_MULT((sp_globals.bbox_xmax_orus - - sp_globals.bbox_xmin_orus), -isw_scale); - if (char_width >= sp_globals.isw_xmax) - if (!reset_xmax(char_width)) - return FALSE; - } -#endif - -if (fn_begin_char(sp_globals.Psw, Pmin, Pmax)) /* Signal start of character data */ - { - pointer_sav = pointer; - do - { - pointer = pointer_sav; /* Point to next DOCH or END instruction */ - while ((format = NEXT_BYTE(pointer))) /* DOCH instruction? */ - { - init_tcb(); /* Initialize transformation control block */ - x_posn = sp_get_posn_arg(&pointer, format); - y_posn = sp_get_posn_arg(&pointer, (ufix8)(format >> 2)); - x_scale = sp_get_scale_arg(&pointer, (ufix8)(format & BIT4)); - y_scale = sp_get_scale_arg(&pointer, (ufix8)(format & BIT5)); - scale_tcb(&sp_globals.tcb, x_posn, y_posn, x_scale, y_scale); /* Scale for sub-char */ - sub_char_index = (format & BIT6)? /* Read sub-char index */ - 0xffff & NEXT_WORD(pointer): - 0xffff & NEXT_BYTE(pointer); - sub_pointer = sp_get_char_org(sub_char_index, FALSE); /* Point to start of sub-char */ - if (sub_pointer == NULL) /* Character data not available? */ - { - return FALSE; /* Abort character output */ - } - sub_pointer += 2; /* Skip over character id */ - x_orus = NEXT_WORD(sub_pointer); /* Read set_width of sub-character */ - - Pssw.x = (fix15)( - (fix31)( - ((fix31)x_orus * (sp_globals.specs.xxmult>>16) + - ( ((fix31)x_orus * (sp_globals.specs.xxmult&0xffffL) )>>16) - ) << sp_globals.pixshift) / sp_globals.metric_resolution); - Pssw.y = (fix15)( - (fix31)( - ((fix31)x_orus * (sp_globals.specs.yxmult>>16) + - ( ((fix31)x_orus * (sp_globals.specs.yxmult&0xffffL) )>>16) - ) << sp_globals.pixshift) / sp_globals.metric_resolution); - - format = NEXT_BYTE(sub_pointer); /* Read sub-character format */ - if (format & BIT1) /* Optional data in header? */ - { - tmpfix15 = (ufix8)NEXT_BYTE(sub_pointer); /* Read size of optional data */ - sub_pointer += tmpfix15; /* Skip optional data */ - } - sub_pointer = plaid_tcb(sub_pointer, format); /* Process sub-character plaid data */ - sub_pointer = read_bbox(sub_pointer, &Pmin, &Pmax, FALSE); /* Read bounding box */ - fn_begin_sub_char(Pssw, Pmin, Pmax); /* Signal start of sub-character data */ - proc_outl_data(sub_pointer); /* Process sub-character data */ - fn_end_sub_char(); /* Signal end of sub-character data */ - } - } - while (!fn_end_char()); /* Signal end of character; repeat if required */ - } -return TRUE; -} - -#if INCL_LCD /* Dynamic load character data supported? */ -FUNCTION static ufix8 FONTFAR *sp_get_char_org( -GDECL -ufix16 char_index, /* Index of character to be accessed */ -boolean top_level) /* Not a compound character element */ -/* - * Called by sp_get_char_id(), sp_get_char_width(), sp_make_char() and - * sp_make_comp_char() to get a pointer to the start of the character data - * for the specified character index. - * Version for configuration supporting dynamic character data loading. - * Calls load_char_data() to load character data if not already loaded - * as part of the original font buffer. - * Returns NULL if character data not available - */ -{ -buff_t *pchar_data; /* Buffer descriptor requested */ -ufix8 FONTFAR *pointer; /* Pointer into character directory */ -ufix8 format; /* Character directory format byte */ -fix31 char_offset; /* Offset of char data from start of font file */ -fix31 next_char_offset; /* Offset of char data from start of font file */ -fix15 no_bytes; /* Number of bytes required for char data */ - -if (top_level) /* Not element of compound char? */ - { - if (char_index < sp_globals.first_char_idx) /* Before start of character set? */ - return NULL; - char_index -= sp_globals.first_char_idx; - if (char_index >= sp_globals.no_chars_avail) /* Beyond end of character set? */ - return NULL; - sp_globals.cb_offset = 0; /* Reset char buffer offset */ - } - -pointer = sp_globals.pchar_dir; -format = NEXT_BYTE(pointer); /* Read character directory format byte */ -pointer += char_index << 1; /* Point to indexed character entry */ -if (format) /* 3-byte entries in char directory? */ - { - pointer += char_index; /* Adjust for 3-byte entries */ - char_offset = read_long(pointer); /* Read file offset to char data */ - next_char_offset = read_long(pointer + 3); /* Read offset to next char */ - } -else - { - char_offset = (fix31)(0xffff & NEXT_WORD(pointer)); /* Read file offset to char data */ - next_char_offset = (fix31)(0xffff & NEXT_WORD(pointer)); /* Read offset to next char */ - } - -no_bytes = next_char_offset - char_offset; -if (no_bytes == 0) /* Character not in directory? */ - return NULL; - -if (next_char_offset <= sp_globals.font_buff_size)/* Character data already in font buffer? */ - return sp_globals.pfont->org + char_offset; /* Return pointer into font buffer */ - -pchar_data = load_char_data(char_offset, no_bytes, sp_globals.cb_offset); /* Request char data load */ -if (pchar_data->no_bytes < no_bytes) /* Correct number of bytes loaded? */ - return NULL; - -if (top_level) /* Not element of compound char? */ - { - sp_globals.cb_offset = no_bytes; - } - -return pchar_data->org; /* Return pointer into character data buffer */ -} -#endif - -#if INCL_LCD -#else /* Dynamic load character data not supported? */ -FUNCTION static ufix8 FONTFAR *sp_get_char_org( -GDECL -ufix16 char_index, /* Index of character to be accessed */ -boolean top_level) /* Not a compound character element */ -/* - * Called by sp_get_char_id(), sp_get_char_width(), sp_make_char() and - * sp_make_comp_char() to get a pointer to the start of the character data - * for the specified character index. - * Version for configuration not supporting dynamic character data loading. - * Returns NULL if character data not available - */ -{ -ufix8 FONTFAR *pointer; /* Pointer into character directory */ -ufix8 format; /* Character directory format byte */ -fix31 char_offset; /* Offset of char data from start of font file */ -fix31 next_char_offset; /* Offset of char data from start of font file */ -fix15 no_bytes; /* Number of bytes required for char data */ - -if (top_level) /* Not element of compound char? */ - { - if (char_index < sp_globals.first_char_idx) /* Before start of character set? */ - return NULL; - char_index -= sp_globals.first_char_idx; - if (char_index >= sp_globals.no_chars_avail) /* Beyond end of character set? */ - return NULL; - } - -pointer = sp_globals.pchar_dir; -format = NEXT_BYTE(pointer); /* Read character directory format byte */ -pointer += char_index << 1; /* Point to indexed character entry */ -if (format) /* 3-byte entries in char directory? */ - { - pointer += char_index; /* Adjust for 3-byte entries */ - char_offset = read_long(pointer); /* Read file offset to char data */ - next_char_offset = read_long(pointer + 3); /* Read offset to next char */ - } -else - { - char_offset = (fix31)(0xffff & NEXT_WORD(pointer)); /* Read file offset to char data */ - next_char_offset = (fix31)(0xffff & NEXT_WORD(pointer)); /* Read offset to next char */ - } - -no_bytes = next_char_offset - char_offset; -if (no_bytes == 0) /* Character not in directory? */ - return NULL; - -return sp_globals.pfont->org + char_offset; /* Return pointer into font buffer */ -} -#endif - - -FUNCTION static fix15 sp_get_posn_arg( -GDECL -ufix8 FONTFAR * STACKFAR *ppointer, /* Pointer to first byte of position argument */ -ufix8 format) /* Format of DOCH arguments */ -/* - * Called by sp_make_comp_char() to read a position argument from the - * specified point in the font/char buffer. - * Updates pointer to byte following position argument. - * Returns value of position argument in outline resolution units - */ -{ -switch (format & 0x03) - { -case 1: - return NEXT_WORD(*ppointer); - -case 2: - return (fix15)((fix7)NEXT_BYTE(*ppointer)); - -default: - return (fix15)0; - } -} - -FUNCTION static fix15 sp_get_scale_arg( -GDECL -ufix8 FONTFAR *STACKFAR *ppointer, /* Pointer to first byte of position argument */ -ufix8 format) /* Format of DOCH arguments */ -/* - * Called by sp_make_comp_char() to read a scale argument from the - * specified point in the font/char buffer. - * Updates pointer to byte following scale argument. - * Returns value of scale argument in scale units (normally 1/4096) - */ -{ -if (format) - return NEXT_WORD(*ppointer); -else - return (fix15)ONE_SCALE; -} -#if INCL_ISW || INCL_SQUEEZING -FUNCTION static void preview_bounding_box( -GDECL -ufix8 FONTFAR *pointer, /* Pointer to first byte of position argument */ -ufix8 format) /* Character format byte */ -{ -point_t Pmin, Pmax; /* Transformed corners of bounding box */ - - sp_globals.no_X_orus = (format & BIT2)? - (fix15)NEXT_BYTE(pointer): - 0; - sp_globals.no_Y_orus = (format & BIT3)? - (fix15)NEXT_BYTE(pointer): - 0; - pointer = read_oru_table(pointer); - - /* Skip over control zone table */ - pointer = skip_control_zone(pointer,format); - - /* Skip over interpolation table */ - pointer = skip_interpolation_table(pointer,format); - /* get_args has a pathological need for this value to be set */ - sp_globals.Y_edge_org = sp_globals.no_X_orus; - pointer = read_bbox(pointer, &Pmin, &Pmax, TRUE); /* Read bounding bo -x */ - -} -#endif -#if INCL_ISW -FUNCTION static boolean reset_xmax( -GDECL -fix31 xmax) - -{ -fix15 xmin; /* Minimum X ORU value in font */ -fix15 ymin; /* Minimum Y ORU value in font */ -fix15 ymax; /* Maximum Y ORU value in font */ - - -sp_globals.isw_modified_constants = TRUE; -xmin = read_word_u(sp_globals.font_org + FH_FXMIN); -ymin = read_word_u(sp_globals.font_org + FH_FYMIN); -ymax = read_word_u(sp_globals.font_org + FH_FYMAX); - -if (!setup_consts(xmin,xmax,ymin,ymax)) - { - report_error(3); /* Requested specs out of range */ - return FALSE; - } -sp_globals.constr.data_valid = FALSE; -/* recompute setwidth */ -sp_globals.Psw.x = (fix15)((fix31)( - ((fix31)sp_globals.imported_width * (sp_globals.specs.xxmult>>16) + - ( ((fix31)sp_globals.imported_width * - (sp_globals.specs.xxmult&0xffffL) )>>16) - ) << sp_globals.pixshift) / sp_globals.metric_resolution); -sp_globals.Psw.y = (fix15)( - (fix31)( - ((fix31)sp_globals.imported_width * (sp_globals.specs.yxmult>>16) + - ( ((fix31)sp_globals.imported_width * (sp_globals.specs.yxmult&0xffffL) )>>16) - ) << sp_globals.pixshift) / sp_globals.metric_resolution); - -return TRUE; -} -#endif |