[u/mdw/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 {
    unsigned long chr;
    unsigned long attr;
};

struct termline {
    unsigned short lattr;
    int cols;
    int temporary;		       /* TRUE if decompressed from scrollback */
    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 */

    termchar *cpos;		       /* cursor position (convenience) */

    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))
#define fix_cpos do { \
    term->cpos = lineptr(term->curs.y)->chars + term->curs.x; \
} while(0)

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