X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=st.c;h=33a1501403e6d83fe11d0ccaa773e9b363f01c76;hb=b7a7f171effb301ce8dbce07c1c77a6b06ef980f;hp=f6c9f18d400085ddc2c1ab3c2d60a2e7ddb5cbe9;hpb=4eddf19fdc2f3845c927291b99d3faefe73f98f3;p=st.git diff --git a/st.c b/st.c index f6c9f18..33a1501 100644 --- a/st.c +++ b/st.c @@ -72,6 +72,8 @@ #define X2COL(x) (((x) - BORDER)/xw.cw) #define Y2ROW(y) (((y) - BORDER)/xw.ch) +#define VT102ID "\033[?6c" + enum glyph_attribute { ATTR_NULL = 0, ATTR_REVERSE = 1, @@ -224,7 +226,9 @@ typedef struct { int mode; int bx, by; int ex, ey; - struct {int x, y;} b, e; + struct { + int x, y; + } b, e; char *clip; Atom xtarget; bool alt; @@ -300,7 +304,6 @@ static void ttywrite(const char *, size_t); static void xdraws(char *, Glyph, int, int, int, int); static void xhints(void); static void xclear(int, int, int, int); -static void xclearborders(void); static void xdrawcursor(void); static void xinit(void); static void xloadcols(void); @@ -587,10 +590,10 @@ selected(int x, int y) { return BETWEEN(x, bx, ex); } - return ((sel.b.y < y&&y < sel.e.y) - || (y==sel.e.y && x<=sel.e.x)) - || (y==sel.b.y && x>=sel.b.x - && (x<=sel.e.x || sel.b.y!=sel.e.y)); + return ((sel.b.y < y && y < sel.e.y) + || (y == sel.e.y && x <= sel.e.x)) + || (y == sel.b.y && x >= sel.b.x + && (x <= sel.e.x || sel.b.y != sel.e.y)); } void @@ -803,12 +806,12 @@ brelease(XEvent *e) { /* double click to select word */ sel.bx = sel.ex; while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET && - term.line[sel.ey][sel.bx-1].c[0] != ' ') { + term.line[sel.ey][sel.bx-1].c[0] != ' ') { sel.bx--; } sel.b.x = sel.bx; while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET && - term.line[sel.ey][sel.ex+1].c[0] != ' ') { + term.line[sel.ey][sel.ex+1].c[0] != ' ') { sel.ex++; } sel.e.x = sel.ex; @@ -1031,7 +1034,8 @@ treset(void) { memset(term.tabs, 0, term.col * sizeof(*term.tabs)); for(i = TAB; i < term.col; i += TAB) term.tabs[i] = 1; - term.top = 0, term.bot = term.row - 1; + term.top = 0; + term.bot = term.row - 1; term.mode = MODE_WRAP; tclearregion(0, 0, term.col-1, term.row-1); @@ -1040,7 +1044,8 @@ treset(void) { void tnew(int col, int row) { /* set screen size */ - term.row = row, term.col = col; + term.row = row; + term.col = col; term.line = xmalloc(term.row * sizeof(Line)); term.alt = xmalloc(term.row * sizeof(Line)); term.dirty = xmalloc(term.row * sizeof(*term.dirty)); @@ -1178,7 +1183,7 @@ tmoveto(int x, int y) { void tsetchar(char *c) { - char *vt100_0[62] = { /* 0x41 - 0x7e */ + static char *vt100_0[62] = { /* 0x41 - 0x7e */ "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */ 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */ 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */ @@ -1437,8 +1442,8 @@ tsetmode(bool priv, bool set, int *args, int narg) { if(IS_SET(MODE_ALTSCREEN)) tclearregion(0, 0, term.col-1, term.row-1); if((set && !IS_SET(MODE_ALTSCREEN)) || - (!set && IS_SET(MODE_ALTSCREEN))) { - tswapscreen(); + (!set && IS_SET(MODE_ALTSCREEN))) { + tswapscreen(); } if(*args != 1049) break; @@ -1507,6 +1512,10 @@ csihandle(void) { DEFAULT(csiescseq.arg[0], 1); tmoveto(term.c.x, term.c.y+csiescseq.arg[0]); break; + case 'c': /* DA -- Device Attributes */ + if(csiescseq.arg[0] == 0) + ttywrite(VT102ID, sizeof(VT102ID) - 1); + break; case 'C': /* CUF -- Cursor Forward */ case 'a': DEFAULT(csiescseq.arg[0], 1); @@ -1781,40 +1790,80 @@ tputtab(bool forward) { void tputc(char *c, int len) { uchar ascii = *c; + bool control = ascii < '\x20' || ascii == 0177; if(iofd != -1) write(iofd, c, len); - - switch(ascii) { - case '\t': - tputtab(1); - return; - case '\b': - tmoveto(term.c.x-1, term.c.y); - return; - case '\r': - tmoveto(0, term.c.y); - return; - case '\f': - case '\v': - case '\n': - /* go to first col if the mode is set */ - tnewline(IS_SET(MODE_CRLF)); - return; - case '\a': - if(term.esc & ESC_STR) + /* + * STR sequences must be checked before of anything + * because it can use some control codes as part of the sequence + */ + if(term.esc & ESC_STR) { + switch(ascii) { + case '\033': + term.esc = ESC_START | ESC_STR_END; break; - - if(!(xw.state & WIN_FOCUSED)) - xseturgency(1); - return; - case '\033': - csireset(); - term.esc = ESC_START; + case '\a': /* backwards compatibility to xterm */ + term.esc = 0; + strhandle(); + break; + default: + strescseq.buf[strescseq.len++] = ascii; + if(strescseq.len+1 >= STR_BUF_SIZ) { + term.esc = 0; + strhandle(); + } + } return; } - - if(term.esc & ESC_START) { + /* + * Actions of control codes must be performed as soon they arrive + * because they can be embedded inside a control sequence, and + * they must not cause conflicts with sequences. + */ + if(control) { + switch(ascii) { + case '\t': /* HT */ + tputtab(1); + return; + case '\b': /* BS */ + tmoveto(term.c.x-1, term.c.y); + return; + case '\r': /* CR */ + tmoveto(0, term.c.y); + return; + case '\f': /* LF */ + case '\v': /* VT */ + case '\n': /* LF */ + /* go to first col if the mode is set */ + tnewline(IS_SET(MODE_CRLF)); + return; + case '\a': /* BEL */ + if(!(xw.state & WIN_FOCUSED)) + xseturgency(1); + return; + case '\033': /* ESC */ + csireset(); + term.esc = ESC_START; + return; + case '\016': /* SO */ + term.c.attr.mode |= ATTR_GFX; + return; + case '\017': /* SI */ + term.c.attr.mode &= ~ATTR_GFX; + return; + case '\032': /* SUB */ + case '\030': /* CAN */ + csireset(); + return; + case '\005': /* ENQ (IGNORED) */ + case '\000': /* NUL (IGNORED) */ + case '\021': /* XON (IGNORED) */ + case '\023': /* XOFF (IGNORED) */ + case 0177: /* DEL (IGNORED) */ + return; + } + } else if(term.esc & ESC_START) { if(term.esc & ESC_CSI) { csiescseq.buf[csiescseq.len++] = ascii; if(BETWEEN(ascii, 0x40, 0x7E) @@ -1822,22 +1871,6 @@ tputc(char *c, int len) { term.esc = 0; csiparse(), csihandle(); } - } else if(term.esc & ESC_STR) { - switch(ascii) { - case '\033': - term.esc = ESC_START | ESC_STR_END; - break; - case '\a': /* backwards compatibility to xterm */ - term.esc = 0; - strhandle(); - break; - default: - strescseq.buf[strescseq.len++] = ascii; - if(strescseq.len+1 >= STR_BUF_SIZ) { - term.esc = 0; - strhandle(); - } - } } else if(term.esc & ESC_STR_END) { term.esc = 0; if(ascii == '\\') @@ -1906,10 +1939,13 @@ tputc(char *c, int len) { } term.esc = 0; break; + case 'Z': /* DECID -- Identify Terminal */ + ttywrite(VT102ID, sizeof(VT102ID) - 1); + term.esc = 0; + break; case 'c': /* RIS -- Reset to inital state */ treset(); term.esc = 0; - xclearborders(); xresettitle(); break; case '=': /* DECPAM -- Application keypad */ @@ -1937,20 +1973,26 @@ tputc(char *c, int len) { term.esc = 0; } } - } else { - if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey)) - sel.bx = -1; - if(ascii >= '\020' || term.c.attr.mode & ATTR_GFX) { - if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT) - tnewline(1); /* always go to first col */ - tsetchar(c); - if(term.c.x+1 < term.col) { - tmoveto(term.c.x+1, term.c.y); - } else { - term.c.state |= CURSOR_WRAPNEXT; - } - } + /* + * All characters which forms part of a sequence are not + * printed + */ + return; } + /* + * Display control codes only if we are in graphic mode + */ + if(control && !(term.c.attr.mode & ATTR_GFX)) + return; + if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey)) + sel.bx = -1; + if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT) + tnewline(1); /* always go to first col */ + tsetchar(c); + if(term.c.x+1 < term.col) + tmoveto(term.c.x+1, term.c.y); + else + term.c.state |= CURSOR_WRAPNEXT; } int @@ -2091,18 +2133,6 @@ xclear(int x1, int y1, int x2, int y2) { } void -xclearborders(void) { - /* top and left border */ - xclear(0, 0, BORDER, xw.h); - xclear(0, 0, xw.w, BORDER); - - /* lower and right border */ - xclear(BORDER, xw.th - 1, xw.w, xw.h); - /* Will just draw what hasn't been drawn by the previous call. */ - xclear(xw.tw - 1, BORDER, xw.w, xw.h - xw.th - 2); -} - -void xhints(void) { XClassHint class = {opt_class ? opt_class : TNAME, TNAME}; XWMHints wm = {.flags = InputHint, .input = 1}; @@ -2264,8 +2294,8 @@ xinit(void) { void xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) { - int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch, - width = charlen*xw.cw; + int winx = BORDER + x * xw.cw, winy = BORDER + y * xw.ch, + width = charlen * xw.cw; Font *font = &dc.font; XGlyphInfo extents; XftColor *fg = &dc.xft_col[base.fg], *bg = &dc.xft_col[base.bg], @@ -2290,7 +2320,7 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) { * Those ranges will not be brightened: * 8 - 15 – bright system colors * 196 - 231 – highest 256 color cube - * 252 - 255 – brightest colors in grescale + * 252 - 255 – brightest colors in greyscale */ font = &dc.bfont; } @@ -2328,6 +2358,20 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) { &extents); width = extents.xOff; + /* Intelligent cleaning up of the borders. */ + if(x == 0) { + xclear(0, (y == 0)? 0 : winy, BORDER, + winy + xw.ch + (y == term.row-1)? xw.h : 0); + } + if(x + charlen >= term.col-1) { + xclear(winx + width, (y == 0)? 0 : winy, xw.w, + (y == term.row-1)? xw.h : (winy + xw.ch)); + } + if(y == 0) + xclear(winx, 0, winx + width, BORDER); + if(y == term.row-1) + xclear(winx, winy + xw.ch, winx + width, xw.h); + XftDrawRect(xw.xft_draw, bg, winx, winy, width, xw.ch); XftDrawStringUtf8(xw.xft_draw, fg, font->xft_set, winx, winy + font->ascent, (FcChar8 *)s, bytelen); @@ -2382,7 +2426,6 @@ void redraw(void) { struct timespec tv = {0, REDRAW_TIMEOUT * 1000}; - xclearborders(); tfulldirt(); draw(); XSync(xw.dpy, False); /* necessary for a good tput flash */ @@ -2598,7 +2641,6 @@ resize(XEvent *e) { tresize(col, row); xresize(col, row); - xclearborders(); ttyresize(); }