cafont_forms.c

<B>Digital的Unix操作系统VAX 4.2源码</B>

 *		point_size to UWORD from WORD.
 *	nv	 2-SEP-1986 17:16:11 Within setup_metric_tables changed all
 *		'MAX_CSET_SIZE' references to 'MAX_CSET_SIZE - 1'.
 *		Adjusted the declared size of dll_width_tbl 
 *		made font_table_struct a proper 'typedef'.
 *		Added the following structure items to FONT_TABLE_STRUCT
 *			LONG	space_width,
 *				ul_thickness,
 *				ul_offset,
 *				strikethru_thickness,
 *				strikethru_offset,
 *				virtual_memory_needs;
 *			BYTE	*bitmaps_ptr;
 *		Provided for the initialization for all of the new structure
 *		items.
 *		Implemented the evaluations for all but the last two of the
 *		new structure items.
 *		Removed the LOCAL restriction on font_table.
 *	nv	 3-SEP-1986 10:17:27 Added font_table entry as third parameter 
 *		in all calls to 'dispose_font'.
 *		Made 'total_portrait_bytes' and 'number_of_odd_words_in_bitmaps'
 *		accessable an external declaration.
 *		Implemented the evaluation for
 *		font_table [i] .virtual_memory_needs based on
 *		'total_portrait_bytes' and 'number_of_odd_words_in_bitmaps'.
 *		Made 'font_bitmap' and 'dll_char' accessable external
 *		declaration.
 *		Implemented the evaluations for all but the last of the
 *		'font_bitmap' structure items.
 *		Included within 'declff' memory allocation for the bitmaps of
 *		each downloaded bitmap.
 *		Made a new procedure, called 'clean_up_host_memory', which 
 *		frees all allocated memory.
 *		Implemented the evaluation for the last of the 'font_bitmap'
 *		structure items, i.e., 'bitmap_ptr'.
 *	nv	 4-SEP-1986 08:50:10 streamlined main for-loop, (i.e., with 
 *		respect to 'i') within 'setup_metric_tables'.
 *		Replaced 'declff' and 'tabulated_deleted_font_file' with 
 *		redesigned versions to implement caching of fonts.
 *		Created 'vm_wasted' and 'vm_being_used' as global variables
 *		to support caching of fonts.
 *		Initialize 'vm_wasted' and 'vm_being_used' in 'font_init'.
 *		Defined the following literals to support caching of fonts:
 *			FONT_VM_OVERHEAD
 *			TOTAL_VIRTUAL_MEMORY
 *			VIRTUAL_MEMORY_SAFETY_MARGIN
 *		Moved define of 'FONT_TABLE_STRUCTURE' to xlate.h.
 *		Made 'ps_font_table' global.
 *		Removed definition of FIRST_DOWNLOADED_FONT and
 *		PS_FONT_TABLE_SIZE; they are now defined in 'xlate.h'.
 *	nv	 5-SEP-1986 12:06:19 Removed the following literal definitions
 *		(they are now defined in 'xlate.h'.):
 *			NUMBER_OF_8_BIT_CHARACTERS,
 *			FONT_FILE_ID_SIZE,
 *			FIRST_DOUBLE_PS_DOWNLOADED_FONT'
 *			NUMBER_OF_PS_FIXED_FONT_DICTNRS,
 *			UNUSED.
 *		Added in 'update_font_table_and_sgr_flags' software for 
 *		storing additional font metrics in the font_table's new
 *		structure items:
 *			above_baseline,
 *			total_height,
 *			superscript_height,
 *			subscript_height,
 *			average_width,
 *			min_table,
 *			max_table.
 *		Added provisions in 'init_font_table' for initializing the 
 *		the same above new structure items in the font_table; and,
 *		based upon the new initializations in 'init_font_table',
 *		redesigned the following procedures:
 *			init_min_table,
 *			init_max_table,
 *			init_total_height_table,
 *			init_above_baseline_table,
 *			init_superscript_height_table,
 *			init_subscript_height_table.
 *		Added and changed software within 'setup_metric_tables' to 
 *		average the font metrics of a newly paired font with its mate's
 *		the font metrics.
 *		Replaced 'ERROR_MACRO' with 'ABORT_MACRO' and 'WARNING_MACRO'
 *		as appropriate; removed 'ERROR_MACRO' definition.
 *		Re-defined the following literals:
 *			TOTAL_VIRTUAL_MEMORY         100000
 *			VIRTUAL_MEMORY_SAFETY_MARGIN 50000
 *	nv	 8-SEP-1986 12:09:42 All wipe_all functionality when all 
 *		downloaded font file are deleted.
 *		Re-defined the following literals:
 *			TOTAL_VIRTUAL_MEMORY         1048575 - 160000
 *			VIRTUAL_MEMORY_SAFETY_MARGIN 100000
 *		
 *	nv	 16-SEP-1986 15:53:40 Make provision within font_init for the 
 *		distinction between power_up and ordinary ris
 *	nv	 25-SEP-1986 18:04:31 Changed the determination of font
 *		metrics which are common for paired font files, but may be
 *		different between those files (due to shoddy work by font
 *		foundries), so that the MAXIMUM of a pair of values are used
 *		rather than the average. 
 *	nv	 7-OCT-1986 16:57:23 In 'new_ps_font_number', changed abort 
 *		code from 21 to 29.
 *		In 'setup_metric_tables', added 'WARNING_MACRO' for seven
 *		possible incompatabilities of metrics for paired fonts. 
 *	nv	 10-OCT-1986 10:22:15 Moved call to 'compute_font' from
 *		'decdtff' to 'exit_current_mode' in xlc_pars.c.
 *	nv	 15-OCT-1986 16:43:19 Re-enabled, by conditionally excluding
 *		compilation unless FONT_FILE_MODE_IS_MEANINGFUL, 'feature' in
 *		'sgr' and 'compute_font_for_g_set' to allow algorithmic
 *		altering of attributes when fonts are selected by font id. (Cf
 *		9-JUL and 27-AUG.) 
 *		Excluded, by conditional compilation with respect to
 *		FONT_FILE_MODE_IS_MEANINGFUL, most of the code in 'compute_vai'.
 *	nv	 17-OCT-1986 12:00:19 Redesigned the initialization of
 *		sgr_table so as to support the ability of null decatff
 *		commands to reinitialize the sgr_table. 
 *	nv	 21-OCT-1986 12:57:28 Added external reference to
 *		'below_baseline_table' and calculated its value in 
 *		'setup_metrics_tables'.
 *	nv	 21-OCT-1986 17:31:34 Included initialization of 
 *		'below_baseline_table'.
 *	nv	 22-OCT-1986 10:17:39 Changed the sign of 'above_baseline_table'
 *		in the calculation of 'below_baseline_table'.
 *	nv	 22-OCT-1986 13:09:49 Modified 'compute_vai' to use the height
 *		of the font used by GL.
 *	nv	 31-OCT-1986 14:12:56 Changed the character_proportion is 
 *		initialized for built-in fonts so that Courir 10.3cpi and
 *		Elite can be initialized 97% and 83% respectively. 
 *	nv	 3-NOV-1986 16:04:05 Remove the literal 'EXACT_WEIGHT'.
 *		Define the following literals:
 *			REGULAR_WEIGHT_CODE,
 *			SEMI_BOLD_WEIGHT_CODE,
 *			BOLD_WEIGHT_CODE, and 
 *			MAX_WEIGHT_VALUE.
 *		Re-defined EXACT_UL_AND_STRIKETHRU  as 0x1.
 *		Change the weight threshold for considering a font bold from 
 *		'25' to '22' in 'update_font_table_and_sgr_flags'.
 *		In 'compute_font_for_g_set', completely re-designed how fonts
 *		are scored according to their weight and changed the selection
 *		process so that no font is 'killed' (i.e., disqualified) on
 *		account of its weight. 
 *		Improved and added comments.
 *	nv	 4-NOV-1986 19:00:16 fixed bug: in order to change "the
 *		selection process so that no font is 'killed' (i.e.,
 *		disqualified) on account of its weight", '& NO_BOLD' had to be 
 *		changed to '| BOLD'.
 *	nv	 5-NOV-1986 11:00:32 Worked on refining the software which
 *		effects the reconciling of mismatched font metrics for paired
 *		fonts.
 *		Removed 'wipe_all & restore_all' code at  the end of 'declff'.
 *		(This tended to expanded grossly PS code and translator
 *		processing for each downloaded font.)
 *		Created a 'mismatched_paired_font_metrics' flag; initialized 
 *		it to FALSE in 'create_new_paired_font' and set it in 
 *		'setup_metric_tables' if a mismatch was found.
 *		Changed 'create_new_paired_font', if a mis-match occured, to
 *		overwrite the old version of the new downloaded font's mate
 *		(so that revised font metrics are used), appropriately increment
 *		'vm_wasted' and, only if necessary, do a 'wipe_all &
 *		restore_all'.
 *	nv	 24-NOV-1986 10:07:16 Replaced all references to
 *		'TOTAL_VIRTUAL_MEMORY' wiht 'xl_st .vm_size'.
 *		Deleted the definition for TOTAL_VIRTUAL_MEMORY.
 *      kws	 17-MAR-1987 16:40:58 Add support for ISO LATIN1 as
 *		an NRCS.
 *      kws	 18-MAR-1987 22:53:05 Allow ISO LATIN1 to be selectable
 *              as a user preference character set.
 *      kws      18-MAR-1987 22:53:51 Fix optimization problems in scs().
 *      kws      24-MAR-1987 10:58:25 QAR 1033. Select NRCS table 1 for
 *              DEC Supplemental downloaded fonts.
 *
 *	araj	 4-APR-1987 00:14:19 Made vm_wasted, vm_being used 
 *		Globals. Should be moved to XLATE.H, were Globals belong
 *      kws	 19-JUN-1987 13:16:35 Fix font attributes being ignored
 *              when fonts are both BOLD and italicized.
 */



#define cafont_forms	(1)

/*  begin include_file    */

#include    "portab.h"	    /* general portability constants */
#include    "cpsys.hc"	    /* system wide constants, typedefs, etc. */
#include    "cpast.hc"	    /* ANSI State Table & Token Table Declarations */
#include    "cpglobal.hc"   /* globals defs for the parser */
#include    "caglobal.hc"   /* globals defs for the CARs */
#include    "camac.lib_hc"  /* non-dump oprintf */

#ifdef  DUMP
#include    "dumpu.hc"	    /* Dump Utility                             */
#include    "xlc_iface.hc"  /* defines for oprintf			*/
#endif DUMP

/*  end   include_file    */



/******************************************************************************
    Enter Macro Mode 
*****************************************************************************/

VOID dec_mac_enter()

   {
#ifdef DUMP
   {
    oprintf("MACRO-ENTER\n");
   }
#endif
   }


/******************************************************************************
    Begin New Macro 
*****************************************************************************/

VOID dec_mac_font()

   {
#ifdef DUMP
   {
    oprintf("MACRO-FONT\n");
   }
#endif
   }


/******************************************************************************
    Sixel Data in Macro 
*****************************************************************************/

VOID dec_mac_sxl()

   {
#ifdef DUMP
   {
    oprintf("MACRO-SXL \n");
   }
#endif
   }


/******************************************************************************
    Terminate Macro 
*****************************************************************************/

VOID dec_mac_term()

   {
#ifdef DUMP
   {
    oprintf("MACRO-TERM \n");
   }
#endif
   }


/******************************************************************************
    Macro Automatic Page Overlay 
*****************************************************************************/

VOID dec_spp()

   {
#ifdef DUMP
   {
    oprintf("DECSPP \n");
   }
#endif
   }