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Diffstat (limited to 'src/rxvt.h')
| -rw-r--r-- | src/rxvt.h | 1481 |
1 files changed, 1481 insertions, 0 deletions
diff --git a/src/rxvt.h b/src/rxvt.h new file mode 100644 index 0000000..85029e6 --- /dev/null +++ b/src/rxvt.h @@ -0,0 +1,1481 @@ +#ifndef RXVT_H_ /* include once only */ +#define RXVT_H_ + +#include <stdio.h> +#include <ctype.h> +#include <errno.h> +#include <stdarg.h> +#include <stdlib.h> +#ifdef HAVE_STDINT_H +#include <stdint.h> +#endif +#include <sys/types.h> +#include <unistd.h> +#include <string.h> +#include <assert.h> +#ifdef HAVE_SYS_IOCTL_H +#include <sys/ioctl.h> +#endif +#ifdef HAVE_SYS_STRREDIR_H +#include <sys/strredir.h> +#endif + +#if HAVE_WCHAR_H +# include <wchar.h> +#else +// stdlib.h might provide it +#endif + +// we assume that Xlib.h defines XPointer, and it does since at least 1994... + +extern "C" { +#include <X11/Xlib.h> +#include <X11/Xutil.h> +#include <X11/Xresource.h> +} + +#if UNICODE_3 +typedef uint32_t text_t; +#else +typedef uint16_t text_t; // saves lots of memory +#endif +typedef uint32_t rend_t; +typedef int32_t tlen_t; // was int16_t, but this results in smaller code and memory use +typedef int32_t tlen_t_; // specifically for use in the line_t structure + +#include "feature.h" + +#if defined (ISO_14755) || defined (ENABLE_PERL) +# define ENABLE_OVERLAY 1 +#endif + +#if ENABLE_PERL +# define ENABLE_FRILLS 1 +# define ENABLE_COMBINING 1 +#endif + +#if ENABLE_FRILLS +# define ENABLE_XEMBED 1 +# define ENABLE_EWMH 1 +# define ENABLE_XIM_ONTHESPOT 1 +# define CURSOR_BLINK 1 +# define OPTION_HC 1 +# define BUILTIN_GLYPHS 1 +#else +# define ENABLE_MINIMAL 1 +#endif + +#include <limits.h> + +#include <X11/cursorfont.h> +#include <X11/keysym.h> +#include <X11/keysymdef.h> +#include <X11/Xatom.h> + +#if HAVE_PIXBUF +# include <gdk-pixbuf/gdk-pixbuf.h> +#endif + +#if XRENDER && (HAVE_PIXBUF || ENABLE_TRANSPARENCY) +# define HAVE_IMG 1 +#endif + +#define ECB_NO_THREADS 1 +#include "ecb.h" + +#include "encoding.h" +#include "rxvtutil.h" +#include "rxvtfont.h" +#include "rxvttoolkit.h" +#include "rxvtimg.h" +#include "scrollbar.h" +#include "ev_cpp.h" +#include "libptytty.h" + +#include "rxvtperl.h" + +// try to avoid some macros to decrease code size, on some systems +#if ENABLE_MINIMAL +# define strcmp(a,b) (strcmp)(a,b) +# define strlen(a) (strlen)(a) +# define strcpy(a,b) (strcpy)(a,b) +# define memset(a,c,l) (memset)(a,c,l) +# define memcpy(a,b,l) (memcpy)(a,b,l) +#endif + +/* + ***************************************************************************** + * SYSTEM HACKS + ***************************************************************************** + */ + +#include <termios.h> + +#ifndef STDIN_FILENO +# define STDIN_FILENO 0 +# define STDOUT_FILENO 1 +# define STDERR_FILENO 2 +#endif + +#ifndef EXIT_SUCCESS /* missing from <stdlib.h> */ +# define EXIT_SUCCESS 0 /* exit function success */ +# define EXIT_FAILURE 1 /* exit function failure */ +#endif + +/****************************************************************************/ + +// exception thrown on fatal (per-instance) errors +class rxvt_failure_exception { }; + +// exception thrown when the command parser runs out of input data +class out_of_input { }; + +/* + ***************************************************************************** + * PROTOTYPES + ***************************************************************************** + */ +// main.C +#define SET_LOCALE(locale) rxvt_set_locale (locale) +extern bool rxvt_set_locale (const char *locale) NOTHROW; +extern void rxvt_push_locale (const char *locale) NOTHROW; +extern void rxvt_pop_locale () NOTHROW; +void rxvt_init (); + +// misc.C +char * rxvt_wcstombs (const wchar_t *str, int len = -1); +wchar_t * rxvt_mbstowcs (const char *str, int len = -1); +char * rxvt_wcstoutf8 (const wchar_t *str, int len = -1); +wchar_t * rxvt_utf8towcs (const char *str, int len = -1); + +const char * rxvt_basename (const char *str) NOTHROW; +void rxvt_vlog (const char *fmt, va_list arg_ptr) NOTHROW; +void rxvt_log (const char *fmt,...) NOTHROW; +void rxvt_warn (const char *fmt,...) NOTHROW; +ecb_noreturn ecb_cold +void rxvt_fatal (const char *fmt, ...) THROW ((class rxvt_failure_exception)); +ecb_noreturn ecb_cold +void rxvt_exit_failure () THROW ((class rxvt_failure_exception)); + +void * rxvt_malloc (size_t size); +void * rxvt_calloc (size_t number, size_t size); +void * rxvt_realloc (void *ptr, size_t size); + +char * rxvt_strtrim (char *str) NOTHROW; +char ** rxvt_strsplit (char delim, const char *str) NOTHROW; + +static inline void +rxvt_free_strsplit (char **ptr) NOTHROW +{ + free (ptr[0]); + free (ptr); +} + +KeySym rxvt_XKeycodeToKeysym (Display *dpy, KeyCode keycode, int index); + +///////////////////////////////////////////////////////////////////////////// + +// temporarily replace the process environment +extern char **environ; +extern char **rxvt_environ; // the original environ pointer + +static inline void +set_environ (char **envv) +{ +#if ENABLE_PERL + assert (envv); +#else + if (envv) +#endif + environ = envv; +} + +struct localise_env +{ + char **orig_env; + + localise_env (char **new_env) + { + orig_env = environ; + environ = new_env; + } + + ~localise_env () + { + environ = orig_env; + } +}; + +/* + ***************************************************************************** + * STRUCTURES AND TYPEDEFS + ***************************************************************************** + */ + +/* + * the 'essential' information for reporting Mouse Events + * pared down from XButtonEvent + */ +struct mouse_event +{ + int clicks; + Time time; /* milliseconds */ + unsigned int state; /* key or button mask */ + unsigned int button; /* detail */ +}; + +#if ENABLE_XEMBED +// XEMBED messages +# define XEMBED_EMBEDDED_NOTIFY 0 +# define XEMBED_WINDOW_ACTIVATE 1 +# define XEMBED_WINDOW_DEACTIVATE 2 +# define XEMBED_REQUEST_FOCUS 3 +# define XEMBED_FOCUS_IN 4 +# define XEMBED_FOCUS_OUT 5 +# define XEMBED_FOCUS_NEXT 6 +# define XEMBED_FOCUS_PREV 7 + +# define XEMBED_MODALITY_ON 10 +# define XEMBED_MODALITY_OFF 11 +# define XEMBED_REGISTER_ACCELERATOR 12 +# define XEMBED_UNREGISTER_ACCELERATOR 13 +# define XEMBED_ACTIVATE_ACCELERATOR 14 + +// XEMBED detail code +# define XEMBED_FOCUS_CURRENT 0 +# define XEMBED_FOCUS_FIRST 1 +# define XEMBED_FOCUS_LAST 2 + +# define XEMBED_MAPPED (1 << 0) +#endif + +/* + ***************************************************************************** + * NORMAL DEFINES + ***************************************************************************** + */ + +/* COLORTERM, TERM environment variables */ +#define COLORTERMENV "rxvt" +#if HAVE_IMG +# define COLORTERMENVFULL COLORTERMENV "-xpm" +#else +# define COLORTERMENVFULL COLORTERMENV +#endif +#ifndef TERMENV +# if USE_256_COLORS +# define TERMENV "rxvt-unicode-256color" +# else +# define TERMENV "rxvt-unicode" +# endif +#endif + +// Hidden color cube for indexed 24-bit colors. There are fewer blue levels +// because normal human eye is less sensitive to the blue component than to +// the red or green. (https://en.m.wikipedia.org/wiki/Color_depth#8-bit_color) +#if USE_256_COLORS +// 7x7x5=245 < 254 unused color indices +# define Red_levels 7 +# define Green_levels 7 +# define Blue_levels 5 +#else +// 6x6x4=144 < 166 unused color indices +# define Red_levels 6 +# define Green_levels 6 +# define Blue_levels 4 +#endif + +#define RGB24_CUBE_SIZE (Red_levels * Green_levels * Blue_levels) + +#if defined (NO_MOUSE_REPORT) && !defined (NO_MOUSE_REPORT_SCROLLBAR) +# define NO_MOUSE_REPORT_SCROLLBAR 1 +#endif + +#define scrollBar_esc 30 + +#if !defined (RXVT_SCROLLBAR) && !defined (NEXT_SCROLLBAR) +# define NO_SCROLLBAR_BUTTON_CONTINUAL_SCROLLING 1 +#endif + +enum { + NO_REFRESH = 0, /* Window not visible at all! */ + FAST_REFRESH = 1, /* Fully exposed window */ + SLOW_REFRESH = 2, /* Partially exposed window */ +}; + +#ifdef NO_SECONDARY_SCREEN +# define NSCREENS 0 +#else +# define NSCREENS 1 +#endif + +/* flags for rxvt_term::scr_gotorc () */ +enum { + C_RELATIVE = 1, /* col movement is relative */ + R_RELATIVE = 2, /* row movement is relative */ + RELATIVE = C_RELATIVE | R_RELATIVE, +}; + +/* modes for rxvt_term::scr_insdel_chars (), rxvt_term::scr_insdel_lines () */ +enum { + INSERT = -1, /* don't change these values */ + DELETE = +1, + ERASE = +2, +}; + +/* modes for rxvt_term::scr_page () - scroll page. used by scrollbar window */ +enum page_dirn { + DN = -1, + NO_DIR = 0, + UP = 1, +}; + +/* arguments for rxvt_term::scr_change_screen () */ +enum { + PRIMARY = 0, + SECONDARY, +}; + +// define various rendition bits and masks. the rendition word +// is 32 bits in size, and we should use it as efficiently as possible + +#define RS_None 0 + +// GET_BGATTR depends on RS_fgShift > RS_bgShift +#define RS_colorMask ((1UL << Color_Bits) - 1UL) +#define RS_bgShift 0 +#define RS_fgShift (RS_bgShift + Color_Bits) +#define RS_bgMask (RS_colorMask << RS_bgShift) +#define RS_fgMask (RS_colorMask << RS_fgShift) + +// must have space for rxvt_fontset::fontCount * 2 + 2 values +#define RS_fontShift (RS_fgShift + Color_Bits) +#define RS_Careful (1UL << RS_fontShift) /* be careful when drawing these */ +#define RS_fontCount rxvt_fontset::fontCount +#define RS_fontMask ((RS_fontCount << (RS_fontShift + 1)) | RS_Careful) // includes RS_Careful + +// toggle this to force redraw, must be != RS_Careful and otherwise "pretty neutral" +#define RS_redraw (2UL << RS_fontShift) + +#define RS_Sel (1UL << 22) + +// 4 custom bits for extensions +#define RS_customCount 16UL +#define RS_customShift 23 +#define RS_customMask ((RS_customCount - 1UL) << RS_customShift) + +// font styles +#define RS_Bold (1UL << RS_styleShift) +#define RS_Italic (2UL << RS_styleShift) + +#define RS_styleCount 4 +#define RS_styleShift 27 +#define RS_styleMask (RS_Bold | RS_Italic) + +// fake styles +#define RS_Blink (1UL << 29) +#define RS_RVid (1UL << 30) // reverse video +#define RS_Uline (1UL << 31) // underline + +#define RS_baseattrMask (RS_Italic | RS_Bold | RS_Blink | RS_RVid | RS_Uline) +#define RS_attrMask (RS_baseattrMask | RS_fontMask) + +#define DEFAULT_RSTYLE (RS_None | (Color_fg << RS_fgShift) | (Color_bg << RS_bgShift)) +#define OVERLAY_RSTYLE (RS_None | (Color_Black << RS_fgShift) | (Color_Yellow << RS_bgShift)) + +enum { + C0_NUL = 0x00, + C0_SOH, C0_STX, C0_ETX, C0_EOT, C0_ENQ, C0_ACK, C0_BEL, + C0_BS , C0_HT , C0_LF , C0_VT , C0_FF , C0_CR , C0_SO , C0_SI , + C0_DLE, C0_DC1, C0_DC2, D0_DC3, C0_DC4, C0_NAK, C0_SYN, C0_ETB, + C0_CAN, C0_EM , C0_SUB, C0_ESC, C0_IS4, C0_IS3, C0_IS2, C0_IS1, +}; +#define CHAR_ST 0x9c /* 0234 */ + +/* + * XTerm Operating System Commands: ESC ] Ps;Pt (ST|BEL) + * colour extensions by Christian W. Zuckschwerdt <zany@triq.net> + */ +enum { + XTerm_name = 0, + XTerm_iconName = 1, + XTerm_title = 2, + XTerm_property = 3, // change X property + XTerm_Color = 4, // change colors + XTerm_Color00 = 10, // change fg color + XTerm_Color01 = 11, // change bg color + XTerm_Color_cursor = 12, // change actual 'Cursor' color + XTerm_Color_pointer_fg = 13, // change actual 'Pointer' fg color + XTerm_Color_pointer_bg = 14, // change actual 'Pointer' bg color + XTerm_Color05 = 15, // not implemented (tektronix fg) + XTerm_Color06 = 16, // not implemented (tektronix bg) + XTerm_Color_HC = 17, // change actual 'Highlight' bg color + XTerm_Color_HTC = 19, // change actual 'Highlight' fg color + XTerm_logfile = 46, // not implemented + XTerm_font = 50, + + XTerm_konsole30 = 30, // reserved for konsole + XTerm_konsole31 = 31, // reserved for konsole + XTerm_emacs51 = 51, // reserved for emacs shell + /* + * rxvt extensions of XTerm OSCs: ESC ] Ps;Pt (ST|BEL) + */ + + // deprecated + Rxvt_restoreFG = 39, + Rxvt_restoreBG = 49, + + Rxvt_dumpscreen = 55, // dump scrollback and all of screen + + URxvt_locale = 701, // change locale + URxvt_version = 702, // request version + + URxvt_Color_IT = 704, // change actual 'Italic' colour + URxvt_Color_BD = 706, // change actual 'Bold' color + URxvt_Color_UL = 707, // change actual 'Underline' color + URxvt_Color_border = 708, + + URxvt_font = 710, + URxvt_boldFont = 711, + URxvt_italicFont = 712, + URxvt_boldItalicFont = 713, + + URxvt_view_up = 720, + URxvt_view_down = 721, + + URxvt_perl = 777, // for use by perl extensions, starts with "extension-name;" +}; + +/* Words starting with `Color_' are colours. Others are counts */ +/* + * The PixColor and rendition colour usage should probably be decoupled + * on the unnecessary items, e.g. Color_pointer, but won't bother + * until we need to. Also, be aware of usage in pixcolor_set + */ + +enum colour_list { + Color_none = -2, + Color_transparent = -1, + Color_fg = 0, + Color_bg, + minCOLOR, /* 2 */ + Color_Black = minCOLOR, + Color_Red3, + Color_Green3, + Color_Yellow3, + Color_Blue3, + Color_Magenta3, + Color_Cyan3, + maxCOLOR, /* minCOLOR + 7 */ +#ifndef NO_BRIGHTCOLOR + Color_AntiqueWhite = maxCOLOR, + minBrightCOLOR, /* maxCOLOR + 1 */ + Color_Grey25 = minBrightCOLOR, + Color_Red, + Color_Green, + Color_Yellow, + Color_Blue, + Color_Magenta, + Color_Cyan, + maxBrightCOLOR, /* minBrightCOLOR + 7 */ + Color_White = maxBrightCOLOR, +#else + Color_White = maxCOLOR, +#endif + minTermCOLOR = Color_White + 1, +#if USE_256_COLORS + maxTermCOLOR = Color_White + 240, +#else + maxTermCOLOR = Color_White + 72, +#endif + minTermCOLOR24, + maxTermCOLOR24 = minTermCOLOR24 + + RGB24_CUBE_SIZE - 1, +#ifndef NO_CURSORCOLOR + Color_cursor, + Color_cursor2, +#endif + Color_pointer_fg, + Color_pointer_bg, + Color_border, +#ifndef NO_BOLD_UNDERLINE_REVERSE + Color_BD, + Color_IT, + Color_UL, + Color_RV, +#endif +#if ENABLE_FRILLS + Color_underline, +#endif +#ifdef OPTION_HC + Color_HC, + Color_HTC, +#endif + Color_scroll, +#ifdef RXVT_SCROLLBAR + Color_trough, +#endif +#if OFF_FOCUS_FADING + Color_fade, +#endif + NRS_COLORS, /* */ +#ifdef RXVT_SCROLLBAR + Color_topShadow = NRS_COLORS, + Color_bottomShadow, + TOTAL_COLORS +#else + TOTAL_COLORS = NRS_COLORS +#endif +}; + +#if USE_256_COLORS +# define Color_Bits 9 // 0 .. maxTermCOLOR24 +#else +# define Color_Bits 8 // 0 .. maxTermCOLOR24 +#endif + +#if maxTermCOLOR24 >= (1 << Color_Bits) +# error color index overflow +#endif + +/* + * Resource list + */ +enum { +# define def(name) Rs_ ## name, +# define reserve(name,count) Rs_ ## name ## _ = Rs_ ## name + (count) - 1, +# include "rsinc.h" +# undef def +# undef reserve + NUM_RESOURCES +}; + +/* DEC private modes */ +#define PrivMode_132 (1UL<<0) +#define PrivMode_132OK (1UL<<1) +#define PrivMode_rVideo (1UL<<2) +#define PrivMode_relOrigin (1UL<<3) +#define PrivMode_Screen (1UL<<4) +#define PrivMode_Autowrap (1UL<<5) +#define PrivMode_aplCUR (1UL<<6) +#define PrivMode_aplKP (1UL<<7) +#define PrivMode_HaveBackSpace (1UL<<8) +#define PrivMode_BackSpace (1UL<<9) +#define PrivMode_ShiftKeys (1UL<<10) +#define PrivMode_VisibleCursor (1UL<<11) +#define PrivMode_MouseX10 (1UL<<12) +#define PrivMode_MouseX11 (1UL<<13) +#define PrivMode_scrollBar (1UL<<14) +#define PrivMode_TtyOutputInh (1UL<<15) +#define PrivMode_Keypress (1UL<<16) +#define PrivMode_smoothScroll (1UL<<17) +#define PrivMode_vt52 (1UL<<18) +#define PrivMode_LFNL (1UL<<19) +#define PrivMode_MouseBtnEvent (1UL<<20) +#define PrivMode_MouseAnyEvent (1UL<<21) +#define PrivMode_BracketPaste (1UL<<22) +#define PrivMode_ExtModeMouse (1UL<<23) // xterm pseudo-utf-8 hack +#define PrivMode_ExtMouseRight (1UL<<24) // xterm pseudo-utf-8, but works in non-utf-8-locales +#define PrivMode_BlinkingCursor (1UL<<25) +#define PrivMode_FocusEvent (1UL<<26) + +#define PrivMode_mouse_report (PrivMode_MouseX10|PrivMode_MouseX11|PrivMode_MouseBtnEvent|PrivMode_MouseAnyEvent) + +#ifdef ALLOW_132_MODE +# define PrivMode_Default (PrivMode_Autowrap|PrivMode_ShiftKeys|PrivMode_VisibleCursor|PrivMode_132OK) +#else +# define PrivMode_Default (PrivMode_Autowrap|PrivMode_ShiftKeys|PrivMode_VisibleCursor) +#endif + +// do not change these constants lightly, there are many interdependencies +#define IMBUFSIZ 128 // input modifier buffer sizes +#define KBUFSZ 512 // size of keyboard mapping buffer +#define CBUFSIZ 32768 // size of command buffer (longest command sequence possible) +#define CBUFCNT 8 // never call pty_fill/cmd_parse more than this often in a row +#define UBUFSIZ 2048 // character buffer + +#if ENABLE_FRILLS +# include <X11/Xmd.h> +typedef struct _mwmhints +{ + CARD32 flags; + CARD32 functions; + CARD32 decorations; + INT32 input_mode; + CARD32 status; +} MWMHints; +#endif + +/* Motif window hints */ +#define MWM_HINTS_FUNCTIONS (1L << 0) +#define MWM_HINTS_DECORATIONS (1L << 1) +#define MWM_HINTS_INPUT_MODE (1L << 2) +#define MWM_HINTS_STATUS (1L << 3) +/* bit definitions for MwmHints.functions */ +#define MWM_FUNC_ALL (1L << 0) +#define MWM_FUNC_RESIZE (1L << 1) +#define MWM_FUNC_MOVE (1L << 2) +#define MWM_FUNC_MINIMIZE (1L << 3) +#define MWM_FUNC_MAXIMIZE (1L << 4) +#define MWM_FUNC_CLOSE (1L << 5) +/* bit definitions for MwmHints.decorations */ +#define MWM_DECOR_ALL (1L << 0) +#define MWM_DECOR_BORDER (1L << 1) +#define MWM_DECOR_RESIZEH (1L << 2) +#define MWM_DECOR_TITLE (1L << 3) +#define MWM_DECOR_MENU (1L << 4) +#define MWM_DECOR_MINIMIZE (1L << 5) +#define MWM_DECOR_MAXIMIZE (1L << 6) +/* bit definitions for MwmHints.inputMode */ +#define MWM_INPUT_MODELESS 0 +#define MWM_INPUT_PRIMARY_APPLICATION_MODAL 1 +#define MWM_INPUT_SYSTEM_MODAL 2 +#define MWM_INPUT_FULL_APPLICATION_MODAL 3 +#define PROP_MWM_HINTS_ELEMENTS 5 + +/* + ***************************************************************************** + * MACRO DEFINES + ***************************************************************************** + */ + +// speed hack, copy some member variable into a local variable of the same name +#define dLocal(type,name) type const name = this->name + +// for speed reasons, we assume that all codepoints 32 to 126 are +// single-width. +#define WCWIDTH(c) (IN_RANGE_INC (c, 0x20, 0x7e) ? 1 : wcwidth (c)) + +/* convert pixel dimensions to row/column values. Everything as int32_t */ +#define Pixel2Col(x) Pixel2Width((int32_t)(x)) +#define Pixel2Row(y) Pixel2Height((int32_t)(y)) +#define Pixel2Width(x) ((int32_t)(x) / (int32_t)fwidth) +#define Pixel2Height(y) ((int32_t)(y) / (int32_t)fheight) +#define Col2Pixel(col) ((int32_t)Width2Pixel(col)) +#define Row2Pixel(row) ((int32_t)Height2Pixel(row)) +#define Width2Pixel(n) ((int32_t)(n) * (int32_t)fwidth) +#define Height2Pixel(n) ((int32_t)(n) * (int32_t)fheight) + +#define LINENO_of(t,n) MOD ((t)->term_start + int(n), (t)->total_rows) +#define ROW_of(t,n) (t)->row_buf [LINENO_of ((t), n)] + +#define LINENO(n) LINENO_of (this, n) +#define ROW(n) ROW_of (this, n) + +/* how to build & extract colors and attributes */ +#define GET_BASEFG(x) (((x) & RS_fgMask) >> RS_fgShift) +#define GET_BASEBG(x) (((x) & RS_bgMask) >> RS_bgShift) + +#define GET_FONT(x) (((x) & RS_fontMask) >> RS_fontShift) +#define SET_FONT(x,fid) (((x) & ~RS_fontMask) | ((fid) << RS_fontShift)) + +#define GET_STYLE(x) (((x) & RS_styleMask) >> RS_styleShift) +#define SET_STYLE(x,style) (((x) & ~RS_styleMask) | ((style) << RS_styleShift)) + +#define GET_ATTR(x) (((x) & RS_attrMask)) +#define SET_FGCOLOR(x,fg) (((x) & ~RS_fgMask) | ((fg) << RS_fgShift)) +#define SET_BGCOLOR(x,bg) (((x) & ~RS_bgMask) | ((bg) << RS_bgShift)) +#define SET_ATTR(x,a) (((x) & ~RS_attrMask) | (a)) + +#define RS_SAME(a,b) (!(((a) ^ (b)) & ~RS_Careful)) + +#define PIXCOLOR_NAME(idx) rs[Rs_color + (idx)] +#define ISSET_PIXCOLOR(idx) (!!rs[Rs_color + (idx)]) + +#if ENABLE_STYLES +# define FONTSET_of(t,style) (t)->fontset[GET_STYLE (style)] +#else +# define FONTSET_of(t,style) (t)->fontset[0] +#endif + +#define FONTSET(style) FONTSET_of (this, style) + +typedef callback<void (const char *)> log_callback; +typedef callback<int (int)> getfd_callback; + +/****************************************************************************/ + +#define LINE_LONGER 0x0001 // line is continued on the next row +#define LINE_FILTERED 0x0002 // line has been filtered +#define LINE_COMPRESSED 0x0004 // line has been compressed (NYI) +#define LINE_FILTER 0x0008 // line needs to be filtered before display (NYI) +#define LINE_BIDI 0x0010 // line needs bidi (NYI) + +struct line_t +{ + text_t *t; // terminal the text + rend_t *r; // rendition, uses RS_ flags + tlen_t_ l; // length of each text line + uint32_t f; // flags + + bool valid () + { + return l >= 0; + } + + void alloc () + { + l = 0; + } + + bool is_longer () + { + return f & LINE_LONGER; + } + + void is_longer (int set) + { + if (set) + f |= LINE_LONGER; + else + f &= ~LINE_LONGER; + } + + void clear () + { + t = 0; + r = 0; + l = 0; + f = 0; + } + + void touch () // call whenever a line is changed/touched/updated + { +#if ENABLE_PERL + f &= ~LINE_FILTERED; +#endif + } + + void touch (int col) + { + max_it (l, col); + touch (); + } +}; + +/****************************************************************************/ + +// primitive wrapper around mbstate_t to ensure initialisation +struct mbstate +{ + mbstate_t mbs; + + operator mbstate_t *() { return &mbs; } + void reset () { memset (&mbs, 0, sizeof (mbs)); } + mbstate () { reset (); } +}; + +/****************************************************************************/ + +#define UNICODE_MASK 0x1fffffUL + +#if UNICODE_3 +# define COMPOSE_LO 0x40000000UL +# define COMPOSE_HI 0x400fffffUL +# define IS_COMPOSE(n) ((int32_t)(n) >= COMPOSE_LO) +#else +# if ENABLE_PERL +# define COMPOSE_LO 0xe000UL // our _own_ functions don't like (illegal) surrogates +# define COMPOSE_HI 0xf8ffUL // in utf-8, so use private use area only +# else +# define COMPOSE_LO 0xd800UL +# define COMPOSE_HI 0xf8ffUL +# endif +# define IS_COMPOSE(n) IN_RANGE_INC ((n), COMPOSE_LO, COMPOSE_HI) +#endif + +#if ENABLE_COMBINING +// compose chars are used to represent composite characters +// that are not representable in unicode, as well as characters +// not fitting in the BMP. +struct compose_char +{ + unicode_t c1, c2; // any chars != NOCHAR are valid + + compose_char (unicode_t c1, unicode_t c2) + : c1(c1), c2(c2) + { } +}; + +class rxvt_composite_vec +{ + vector<compose_char> v; +public: + text_t compose (unicode_t c1, unicode_t c2 = NOCHAR); + int expand (unicode_t c, wchar_t *r); + compose_char *operator [](text_t c) + { + return c >= COMPOSE_LO && c < COMPOSE_LO + v.size () + ? &v[c - COMPOSE_LO] + : 0; + } +}; + +extern class rxvt_composite_vec rxvt_composite; +#endif + +/****************************************************************************/ + +#ifdef KEYSYM_RESOURCE +class keyboard_manager; +#endif + +typedef struct rxvt_term *rxvt_t; + +extern rxvt_t rxvt_current_term; + +#define SET_R(r) rxvt_current_term = const_cast<rxvt_term *>(r) +#define GET_R rxvt_current_term + +/* ------------------------------------------------------------------------- */ +struct overlay_base +{ + int x, y, w, h; // overlay dimensions + text_t **text; + rend_t **rend; + + // while tempting to add swap() etc. here, it effectively only increases code size +}; + +/* ------------------------------------------------------------------------- */ + +typedef struct +{ + int row; + int col; +} row_col_t; + +/* + * terminal limits: + * + * width : 1 <= width + * height : 1 <= height + * ncol : 1 <= ncol <= MAX(tlen_t) + * nrow : 1 <= nrow <= MAX(int) + * saveLines : 0 <= saveLines <= MAX(int) + * term_start : 0 <= term_start < saveLines + * total_rows : nrow + saveLines + * + * top_row : -saveLines <= top_row <= 0 + * view_start : top_row <= view_start <= 0 + * + * | most coordinates are stored relative to term_start, + * ROW_BUF | which is the first line of the terminal screen + * |························= row_buf[0] + * |························= row_buf[1] + * |························= row_buf[2] etc. + * | + * +------------+···········= term_start + top_row + * | scrollback | + * | scrollback +---------+·= term_start + view_start + * | scrollback | display | + * | scrollback | display | + * +------------+·display·+·= term_start + * | terminal | display | + * | terminal +---------+ + * | terminal | + * | terminal | + * +------------+···········= term_start + nrow - 1 + * | + * | + * END······················= total_rows + */ + +struct TermWin_t +{ + int vt_width; /* actual window width [pixels] */ + int vt_height; /* actual window height [pixels] */ + int width; /* window width [pixels] */ + int height; /* window height [pixels] */ + int fwidth; /* font width [pixels] */ + int fheight; /* font height [pixels] */ + int fbase; /* font ascent (baseline) [pixels] */ + int ncol; /* window columns [characters] */ + int nrow; /* window rows [characters] */ + int focus; /* window has focus */ + int mapped; /* window state mapped? */ + int int_bwidth; /* internal border width */ + int ext_bwidth; /* external border width */ + int lineSpace; /* number of extra pixels between rows */ + int letterSpace; /* number of extra pixels between columns */ + int saveLines; /* number of lines that fit in scrollback */ + int total_rows; /* total number of rows in this terminal */ + int term_start; /* term lines start here */ + int view_start; /* scrollback view starts here */ + int top_row; /* topmost row index of scrollback */ + Window parent; /* parent identifier */ + Window vt; /* vt100 window */ + GC gc; /* GC for drawing */ + rxvt_drawable *drawable; + rxvt_fontset *fontset[4]; +}; + +/* + * screen accounting: + * screen_t elements + * row: Cursor row position : 0 <= row < nrow + * col: Cursor column position : 0 <= col < ncol + * tscroll: Scrolling region top row inclusive : 0 <= row < nrow + * bscroll: Scrolling region bottom row inclusive : 0 <= row < nrow + * + * selection_t elements + * clicks: 1, 2 or 3 clicks - 4 indicates a special condition of 1 where + * nothing is selected + * beg: row/column of beginning of selection : never past mark + * mark: row/column of initial click : never past end + * end: row/column of one character past end of selection + * * Note: top_row <= beg.row <= mark.row <= end.row < nrow + * * Note: col == -1 ==> we're left of screen + * + */ +struct screen_t +{ + row_col_t cur; /* cursor position on the screen */ + int tscroll; /* top of settable scroll region */ + int bscroll; /* bottom of settable scroll region */ + unsigned int charset; /* character set number [0..3] */ + unsigned int flags; /* see below */ + row_col_t s_cur; /* saved cursor position */ + unsigned int s_charset; /* saved character set number [0..3] */ + char s_charset_char; + rend_t s_rstyle; /* saved rendition style */ +}; + +enum selection_op_t +{ + SELECTION_CLEAR = 0, /* nothing selected */ + SELECTION_INIT, /* marked a point */ + SELECTION_BEGIN, /* started a selection */ + SELECTION_CONT, /* continued selection */ + SELECTION_DONE /* selection put in CUT_BUFFER0 */ +}; + +struct selection_t +{ + wchar_t *text; /* selected text */ + unsigned int len; /* length of selected text */ + unsigned int screen; /* screen being used */ + unsigned int clicks; /* number of clicks */ + selection_op_t op; /* current operation */ + bool rect; /* rectangular selection? */ + row_col_t beg; /* beginning of selection <= mark */ + row_col_t mark; /* point of initial click <= end */ + row_col_t end; /* one character past end point */ + wchar_t *clip_text; /* text copied to the clipboard */ + unsigned int clip_len; /* length of clipboard text */ +}; + +/* ------------------------------------------------------------------------- */ + +/* screen_t flags */ +#define Screen_Relative (1<<0) /* relative origin mode flag */ +#define Screen_VisibleCursor (1<<1) /* cursor visible? */ +#define Screen_Autowrap (1<<2) /* auto-wrap flag */ +#define Screen_Insert (1<<3) /* insert mode (vs. overstrike) */ +#define Screen_WrapNext (1<<4) /* need to wrap for next char? */ +#define Screen_DefaultFlags (Screen_VisibleCursor | Screen_Autowrap) + +/* rxvt_vars.options */ +enum { +# define def(name) Opt_ ## name, +# define nodef(name) Opt_prev_ ## name, Opt_ ## name = 0, Opt_next_ ## name = Opt_prev_ ## name - 1, + Opt_0, +# include "optinc.h" +# undef nodef +# undef def + Opt_count +}; + +/* ------------------------------------------------------------------------- */ + +struct rxvt_vars : TermWin_t +{ + scrollBar_t scrollBar; + uint8_t options[(Opt_count + 7) >> 3]; + XSizeHints szHint; + rxvt_color *pix_colors; + Cursor TermWin_cursor; /* cursor for vt window */ + + line_t *row_buf; // all lines, scrollback + terminal, circular + line_t *drawn_buf; // text on screen + line_t *swap_buf; // lines for swap buffer + char *tabs; /* per location: 1 == tab-stop */ + screen_t screen; + screen_t swap; + selection_t selection; + rxvt_color pix_colors_focused[TOTAL_COLORS]; +#ifdef OFF_FOCUS_FADING + rxvt_color pix_colors_unfocused[TOTAL_COLORS]; +#endif +}; + +struct rxvt_term : zero_initialized, rxvt_vars, rxvt_screen +{ + + // special markers with magic addresses + static const char resval_undef []; // options specifically unset + static const char resval_on []; // boolean options switched on + static const char resval_off []; // or off + + log_callback *log_hook; // log error messages through this hook, if != 0 + getfd_callback *getfd_hook; // convert remote to local fd, if != 0 +#if ENABLE_PERL + rxvt_perl_term perl; +#endif + struct mbstate mbstate; // current input multibyte state + + unsigned char want_refresh:1, + current_screen:1, /* primary or secondary */ + num_scr_allow:1, + bypass_keystate:1, +#if ENABLE_FRILLS + urgency_hint:1, +#endif +#if CURSOR_BLINK + hidden_cursor:1, +#endif +#if TEXT_BLINK + hidden_text:1, +#endif +#if POINTER_BLANK + hidden_pointer:1, +#endif + enc_utf8:1, /* whether locale uses utf-8 */ + seen_input:1, /* whether we have seen some program output yet */ + seen_resize:1, /* whether we had a resize event */ + init_done:1, + parsed_geometry:1; + + unsigned char refresh_type, +#ifdef META8_OPTION + meta_char; /* Alt-key prefix */ +#endif +/* ---------- */ + bool rvideo_state, rvideo_mode; +#ifndef NO_BELL + bool rvideo_bell; +#endif + int num_scr; /* screen: number of lines scrolled */ + int prev_ncol, /* screen: previous number of columns */ + prev_nrow; /* screen: previous number of rows */ +/* ---------- */ + rend_t rstyle; +/* ---------- */ +#ifdef SELECTION_SCROLLING + int scroll_selection_lines; + int selection_save_x, + selection_save_y, + selection_save_state; +#endif +/* ---------- */ + int csrO, /* Hops - csr offset in thumb/slider to */ + /* give proper Scroll behaviour */ +#if defined(MOUSE_WHEEL) && defined(MOUSE_SLIP_WHEELING) + mouse_slip_wheel_speed, +#endif + refresh_count, + window_vt_x, + |