[sgt/putty] / terminal.h

/*
 * Internals of the Terminal structure, for those other modules
 * which need to look inside it. It would be nice if this could be
 * folded back into terminal.c in future, with an abstraction layer
 * to handle everything that other modules need to know about it;
 * but for the moment, this will do.
 */

#ifndef PUTTY_TERMINAL_H
#define PUTTY_TERMINAL_H

#include "tree234.h"

struct beeptime {
    struct beeptime *next;
    unsigned long ticks;
};

typedef struct {
    int y, x;
} pos;

#ifdef OPTIMISE_SCROLL
struct scrollregion {
    struct scrollregion *next;
    int topline; /* Top line of scroll region. */
    int botline; /* Bottom line of scroll region. */
    int lines; /* Number of lines to scroll by - +ve is forwards. */
};
#endif /* OPTIMISE_SCROLL */

typedef struct termchar termchar;
typedef struct termline termline;

struct termchar {
    /*
     * Any code in terminal.c which definitely needs to be changed
     * when extra fields are added here is labelled with a comment
     * saying FULL-TERMCHAR.
     */
    unsigned long chr;
    unsigned long attr;

    /*
     * The cc_next field is used to link multiple termchars
     * together into a list, so as to fit more than one character
     * into a character cell (Unicode combining characters).
     * 
     * cc_next is a relative offset into the current array of
     * termchars. I.e. to advance to the next character in a list,
     * one does `tc += tc->next'.
     * 
     * Zero means end of list.
     */
    int cc_next;
};

struct termline {
    unsigned short lattr;
    int cols;			       /* number of real columns on the line */
    int size;			       /* number of allocated termchars
					* (cc-lists may make this > cols) */
    int temporary;		       /* TRUE if decompressed from scrollback */
    int cc_free;		       /* offset to first cc in free list */
    struct termchar *chars;
};

struct terminal_tag {

    int compatibility_level;

    tree234 *scrollback;	       /* lines scrolled off top of screen */
    tree234 *screen;		       /* lines on primary screen */
    tree234 *alt_screen;	       /* lines on alternate screen */
    int disptop;		       /* distance scrolled back (0 or -ve) */
    int tempsblines;		       /* number of lines in temporary
					  scrollback */

    termline **disptext;	       /* buffer of text on real screen */
    int dispcursx, dispcursy;	       /* location of cursor on real screen */
    int curstype;		       /* type of cursor on real screen */

#define VBELL_TIMEOUT (TICKSPERSEC/10) /* visual bell lasts 1/10 sec */

    struct beeptime *beephead, *beeptail;
    int nbeeps;
    int beep_overloaded;
    long lastbeep;

#define TTYPE termchar
#define TSIZE (sizeof(TTYPE))

#ifdef OPTIMISE_SCROLL
    struct scrollregion *scrollhead, *scrolltail;
#endif /* OPTIMISE_SCROLL */

    int default_attr, curr_attr, save_attr;
    termchar basic_erase_char, erase_char;

    bufchain inbuf;		       /* terminal input buffer */
    pos curs;			       /* cursor */
    pos savecurs;		       /* saved cursor position */
    int marg_t, marg_b;		       /* scroll margins */
    int dec_om;			       /* DEC origin mode flag */
    int wrap, wrapnext;		       /* wrap flags */
    int insert;			       /* insert-mode flag */
    int cset;			       /* 0 or 1: which char set */
    int save_cset, save_csattr;	       /* saved with cursor position */
    int save_utf, save_wnext;	       /* saved with cursor position */
    int rvideo;			       /* global reverse video flag */
    unsigned long rvbell_startpoint;   /* for ESC[?5hESC[?5l vbell */
    int cursor_on;		       /* cursor enabled flag */
    int reset_132;		       /* Flag ESC c resets to 80 cols */
    int use_bce;		       /* Use Background coloured erase */
    int blinker;		       /* When blinking is the cursor on ? */
    int tblinker;		       /* When the blinking text is on */
    int blink_is_real;		       /* Actually blink blinking text */
    int term_echoing;		       /* Does terminal want local echo? */
    int term_editing;		       /* Does terminal want local edit? */
    int sco_acs, save_sco_acs;	       /* CSI 10,11,12m -> OEM charset */
    int vt52_bold;		       /* Force bold on non-bold colours */
    int utf;			       /* Are we in toggleable UTF-8 mode? */
    int utf_state;		       /* Is there a pending UTF-8 character */
    int utf_char;		       /* and what is it so far. */
    int utf_size;		       /* The size of the UTF character. */
    int printing, only_printing;       /* Are we doing ANSI printing? */
    int print_state;		       /* state of print-end-sequence scan */
    bufchain printer_buf;	       /* buffered data for printer */
    printer_job *print_job;

    int rows, cols, savelines;
    int has_focus;
    int in_vbell;
    unsigned long vbell_startpoint;
    int app_cursor_keys, app_keypad_keys, vt52_mode;
    int repeat_off, cr_lf_return;
    int seen_disp_event;
    int big_cursor;

    long last_blink;		       /* used for real blinking control */
    long last_tblink;

    int xterm_mouse;		       /* send mouse messages to app */
    int mouse_is_down;		       /* used while tracking mouse buttons */

    int cset_attr[2];

/*
 * Saved settings on the alternate screen.
 */
    int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins;
    int alt_cset, alt_sco_acs, alt_utf;
    int alt_t, alt_b;
    int alt_which;
    int alt_sblines; /* # of lines on alternate screen that should be used for scrollback. */

#define ARGS_MAX 32		       /* max # of esc sequence arguments */
#define ARG_DEFAULT 0		       /* if an arg isn't specified */
#define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
    int esc_args[ARGS_MAX];
    int esc_nargs;
    int esc_query;
#define ANSI(x,y)	((x)+((y)<<8))
#define ANSI_QUE(x)	ANSI(x,TRUE)

#define OSC_STR_MAX 2048
    int osc_strlen;
    char osc_string[OSC_STR_MAX + 1];
    int osc_w;

    char id_string[1024];

    unsigned char *tabs;

    enum {
	TOPLEVEL,
	SEEN_ESC,
	SEEN_CSI,
	SEEN_OSC,
	SEEN_OSC_W,

	DO_CTRLS,

	SEEN_OSC_P,
	OSC_STRING, OSC_MAYBE_ST,
	VT52_ESC,
	VT52_Y1,
	VT52_Y2,
	VT52_FG,
	VT52_BG
    } termstate;

    enum {
	NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED
    } selstate;
    enum {
	LEXICOGRAPHIC, RECTANGULAR
    } seltype;
    enum {
	SM_CHAR, SM_WORD, SM_LINE
    } selmode;
    pos selstart, selend, selanchor;

    short wordness[256];

    /* Mask of attributes to pay attention to when painting. */
    int attr_mask;

    wchar_t *paste_buffer;
    int paste_len, paste_pos, paste_hold;
    long last_paste;

    void (*resize_fn)(void *, int, int);
    void *resize_ctx;

    void *ldisc;

    void *frontend;

    void *logctx;

    struct unicode_data *ucsdata;

    /*
     * We maintain a full _copy_ of a Config structure here, not
     * merely a pointer to it. That way, when we're passed a new
     * one for reconfiguration, we can check the differences and
     * adjust the _current_ setting of (e.g.) auto wrap mode rather
     * than only the default.
     */
    Config cfg;

    /*
     * from_backend calls term_out, but it can also be called from
     * the ldisc if the ldisc is called _within_ term_out. So we
     * have to guard against re-entrancy - if from_backend is
     * called recursively like this, it will simply add data to the
     * end of the buffer term_out is in the process of working
     * through.
     */
    int in_term_out;

    /*
     * These are buffers used by the bidi and Arabic shaping code.
     */
    termchar *ltemp;
    int ltemp_size;
    bidi_char *wcFrom, *wcTo;
    int wcFromTo_size;
    termchar **pre_bidi_cache, **post_bidi_cache;
    int bidi_cache_size;
};

#define in_utf(term) ((term)->utf || (term)->ucsdata->line_codepage==CP_UTF8)

#endif
Commit	Line	Data
2df34b43	1	/*
	2	* Internals of the Terminal structure, for those other modules
	3	* which need to look inside it. It would be nice if this could be
	4	* folded back into terminal.c in future, with an abstraction layer
	5	* to handle everything that other modules need to know about it;
	6	* but for the moment, this will do.
	7	*/
	8
	9	#ifndef PUTTY_TERMINAL_H
	10	#define PUTTY_TERMINAL_H
	11
	12	#include "tree234.h"
	13
	14	struct beeptime {
	15	struct beeptime *next;
	16	unsigned long ticks;
	17	};
	18
	19	typedef struct {
	20	int y, x;
	21	} pos;
	22
341eb978	23	#ifdef OPTIMISE_SCROLL
	24	struct scrollregion {
	25	struct scrollregion *next;
	26	int topline; /* Top line of scroll region. */
	27	int botline; /* Bottom line of scroll region. */
	28	int lines; /* Number of lines to scroll by - +ve is forwards. */
	29	};
	30	#endif /* OPTIMISE_SCROLL */
	31
36566009	32	typedef struct termchar termchar;
	33	typedef struct termline termline;
	34
	35	struct termchar {
c6958dfe	36	/*
	37	* Any code in terminal.c which definitely needs to be changed
	38	* when extra fields are added here is labelled with a comment
	39	* saying FULL-TERMCHAR.
	40	*/
36566009	41	unsigned long chr;
36566009	42	unsigned long attr;
c6958dfe	43
	44	/*
	45	* The cc_next field is used to link multiple termchars
	46	* together into a list, so as to fit more than one character
	47	* into a character cell (Unicode combining characters).
	48	*
	49	* cc_next is a relative offset into the current array of
	50	* termchars. I.e. to advance to the next character in a list,
	51	* one does `tc += tc->next'.
	52	*
	53	* Zero means end of list.
	54	*/
	55	int cc_next;
36566009	56	};
	57
	58	struct termline {
	59	unsigned short lattr;
c6958dfe	60	int cols; /* number of real columns on the line */
	61	int size; /* number of allocated termchars
	62	* (cc-lists may make this > cols) */
36566009	63	int temporary; /* TRUE if decompressed from scrollback */
c6958dfe	64	int cc_free; /* offset to first cc in free list */
36566009	65	struct termchar *chars;
	66	};
	67
2df34b43	68	struct terminal_tag {
	69
	70	int compatibility_level;
	71
	72	tree234 scrollback; / lines scrolled off top of screen */
	73	tree234 screen; / lines on primary screen */
	74	tree234 alt_screen; / lines on alternate screen */
	75	int disptop; /* distance scrolled back (0 or -ve) */
4683b9b6	76	int tempsblines; /* number of lines in temporary
4683b9b6	77	scrollback */
2df34b43	78
36566009	79	termline *disptext; / buffer of text on real screen */
	80	int dispcursx, dispcursy; /* location of cursor on real screen */
	81	int curstype; /* type of cursor on real screen */
2df34b43	82
	83	#define VBELL_TIMEOUT (TICKSPERSEC/10) /* visual bell lasts 1/10 sec */
	84
	85	struct beeptime beephead, beeptail;
	86	int nbeeps;
	87	int beep_overloaded;
	88	long lastbeep;
	89
36566009	90	#define TTYPE termchar
3d88e64d	91	#define TSIZE (sizeof(TTYPE))
2df34b43	92
341eb978	93	#ifdef OPTIMISE_SCROLL
	94	struct scrollregion scrollhead, scrolltail;
	95	#endif /* OPTIMISE_SCROLL */
	96
36566009	97	int default_attr, curr_attr, save_attr;
36566009	98	termchar basic_erase_char, erase_char;
2df34b43	99
	100	bufchain inbuf; /* terminal input buffer */
	101	pos curs; /* cursor */
	102	pos savecurs; /* saved cursor position */
	103	int marg_t, marg_b; /* scroll margins */
	104	int dec_om; /* DEC origin mode flag */
	105	int wrap, wrapnext; /* wrap flags */
	106	int insert; /* insert-mode flag */
	107	int cset; /* 0 or 1: which char set */
	108	int save_cset, save_csattr; /* saved with cursor position */
	109	int save_utf, save_wnext; /* saved with cursor position */
	110	int rvideo; /* global reverse video flag */
	111	unsigned long rvbell_startpoint; /* for ESC[?5hESC[?5l vbell */
	112	int cursor_on; /* cursor enabled flag */
	113	int reset_132; /* Flag ESC c resets to 80 cols */
	114	int use_bce; /* Use Background coloured erase */
	115	int blinker; /* When blinking is the cursor on ? */
	116	int tblinker; /* When the blinking text is on */
	117	int blink_is_real; /* Actually blink blinking text */
	118	int term_echoing; /* Does terminal want local echo? */
	119	int term_editing; /* Does terminal want local edit? */
	120	int sco_acs, save_sco_acs; /* CSI 10,11,12m -> OEM charset */
	121	int vt52_bold; /* Force bold on non-bold colours */
	122	int utf; /* Are we in toggleable UTF-8 mode? */
	123	int utf_state; /* Is there a pending UTF-8 character */
	124	int utf_char; /* and what is it so far. */
	125	int utf_size; /* The size of the UTF character. */
	126	int printing, only_printing; /* Are we doing ANSI printing? */
	127	int print_state; /* state of print-end-sequence scan */
	128	bufchain printer_buf; /* buffered data for printer */
	129	printer_job *print_job;
	130
	131	int rows, cols, savelines;
	132	int has_focus;
	133	int in_vbell;
	134	unsigned long vbell_startpoint;
	135	int app_cursor_keys, app_keypad_keys, vt52_mode;
	136	int repeat_off, cr_lf_return;
	137	int seen_disp_event;
	138	int big_cursor;
	139
	140	long last_blink; /* used for real blinking control */
	141	long last_tblink;
	142
	143	int xterm_mouse; /* send mouse messages to app */
b9d7bcad	144	int mouse_is_down; /* used while tracking mouse buttons */
2df34b43	145
36566009	146	int cset_attr[2];
2df34b43	147
	148	/*
	149	* Saved settings on the alternate screen.
	150	*/
	151	int alt_x, alt_y, alt_om, alt_wrap, alt_wnext, alt_ins;
	152	int alt_cset, alt_sco_acs, alt_utf;
	153	int alt_t, alt_b;
	154	int alt_which;
876e5d5e	155	int alt_sblines; /* # of lines on alternate screen that should be used for scrollback. */
2df34b43	156
	157	#define ARGS_MAX 32 /* max # of esc sequence arguments */
	158	#define ARG_DEFAULT 0 /* if an arg isn't specified */
	159	#define def(a,d) ( (a) == ARG_DEFAULT ? (d) : (a) )
	160	int esc_args[ARGS_MAX];
	161	int esc_nargs;
	162	int esc_query;
	163	#define ANSI(x,y) ((x)+((y)<<8))
	164	#define ANSI_QUE(x) ANSI(x,TRUE)
	165
	166	#define OSC_STR_MAX 2048
	167	int osc_strlen;
	168	char osc_string[OSC_STR_MAX + 1];
	169	int osc_w;
	170
	171	char id_string[1024];
	172
	173	unsigned char *tabs;
	174
	175	enum {
	176	TOPLEVEL,
	177	SEEN_ESC,
	178	SEEN_CSI,
	179	SEEN_OSC,
	180	SEEN_OSC_W,
	181
	182	DO_CTRLS,
	183
	184	SEEN_OSC_P,
	185	OSC_STRING, OSC_MAYBE_ST,
	186	VT52_ESC,
	187	VT52_Y1,
	188	VT52_Y2,
	189	VT52_FG,
	190	VT52_BG
	191	} termstate;
	192
	193	enum {
	194	NO_SELECTION, ABOUT_TO, DRAGGING, SELECTED
	195	} selstate;
	196	enum {
	197	LEXICOGRAPHIC, RECTANGULAR
	198	} seltype;
	199	enum {
	200	SM_CHAR, SM_WORD, SM_LINE
	201	} selmode;
	202	pos selstart, selend, selanchor;
	203
	204	short wordness[256];
	205
2647b103	206	/* Mask of attributes to pay attention to when painting. */
36566009	207	int attr_mask;
2647b103	208
2df34b43	209	wchar_t *paste_buffer;
	210	int paste_len, paste_pos, paste_hold;
	211	long last_paste;
51470298	212
	213	void (resize_fn)(void , int, int);
	214	void *resize_ctx;
b9d7bcad	215
b9d7bcad	216	void *ldisc;
a8327734	217
	218	void *frontend;
	219
	220	void *logctx;
f6b14226	221
21d2b241	222	struct unicode_data *ucsdata;
21d2b241	223
64734920	224	/*
	225	* We maintain a full _copy_ of a Config structure here, not
	226	* merely a pointer to it. That way, when we're passed a new
	227	* one for reconfiguration, we can check the differences and
	228	* adjust the _current_ setting of (e.g.) auto wrap mode rather
	229	* than only the default.
	230	*/
	231	Config cfg;
74aca06d	232
	233	/*
	234	* from_backend calls term_out, but it can also be called from
	235	* the ldisc if the ldisc is called _within_ term_out. So we
	236	* have to guard against re-entrancy - if from_backend is
	237	* called recursively like this, it will simply add data to the
	238	* end of the buffer term_out is in the process of working
	239	* through.
	240	*/
	241	int in_term_out;
f0fccd51	242
	243	/*
	244	* These are buffers used by the bidi and Arabic shaping code.
	245	*/
36566009	246	termchar *ltemp;
c6958dfe	247	int ltemp_size;
f0fccd51	248	bidi_char wcFrom, wcTo;
c6958dfe	249	int wcFromTo_size;
36566009	250	termchar pre_bidi_cache, post_bidi_cache;
f0fccd51	251	int bidi_cache_size;
2df34b43	252	};
2df34b43	253
21d2b241	254	#define in_utf(term) ((term)->utf \|\| (term)->ucsdata->line_codepage==CP_UTF8)
2df34b43	255
2df34b43	256	#endif