X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=st.c;h=6dcded58996e7796bb0f6e8957c6980a9a88e313;hb=7d88cf88d05c5f5fffbe096da9fac79d7d8957f9;hp=9ca032f5a34a221787ca53235fc5021e9ffd2cb0;hpb=6db6980e27bdde6f2d444dd3cdd7a46985fa84fc;p=st.git diff --git a/st.c b/st.c index 9ca032f..6dcded5 100644 --- a/st.c +++ b/st.c @@ -46,8 +46,9 @@ /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */ enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 }; -enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT, CURSOR_HIDE, CURSOR_DRAW, +enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT, CURSOR_SAVE, CURSOR_LOAD }; +enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 }; enum { GLYPH_SET=1, GLYPH_DIRTY=2 }; enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4 }; enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 }; @@ -67,6 +68,7 @@ typedef struct { Glyph attr; /* current char attributes */ int x; int y; + char state; } TCursor; /* CSI Escape sequence structs */ @@ -86,7 +88,6 @@ typedef struct { int col; /* nb col */ Line* line; /* screen */ TCursor c; /* cursor */ - char hidec; int top; /* top scroll limit */ int bot; /* bottom scroll limit */ int mode; /* terminal mode flags */ @@ -149,7 +150,6 @@ static void tputc(char); static void tputs(char*, int); static void treset(void); static void tresize(int, int); -static void tscroll(void); static void tscrollup(int); static void tscrolldown(int); static void tsetattr(int*, int); @@ -165,7 +165,7 @@ static void xbell(void); static void xdraws(char *, Glyph, int, int, int); static void xhints(void); static void xclear(int, int, int, int); -static void xcursor(int); +static void xcursor(void); static void xinit(void); static void xloadcols(void); @@ -222,17 +222,17 @@ die(const char *errstr, ...) { void execsh(void) { char *args[3] = {getenv("SHELL"), "-i", NULL}; - DEFAULT(args[0], "/bin/sh"); /* default shell if getenv() failed */ + DEFAULT(args[0], "/bin/sh"); /* if getenv() failed */ putenv("TERM=" TNAME); execvp(args[0], args); } void -xbell(void) { /* visual bell */ - XRectangle r = { BORDER, BORDER, xw.bufw, xw.bufh }; +xbell(void) { XSetForeground(xw.dis, dc.gc, dc.col[BellCol]); - XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1); - /* usleep(30000); */ + XFillRectangle(xw.dis, xw.win, dc.gc, BORDER, BORDER, xw.bufw, xw.bufh); + XFlush(xw.dis); + usleep(BellTime); draw(SCREEN_REDRAW); } @@ -326,11 +326,12 @@ tcursor(int mode) { void treset(void) { - term.c.attr.mode = ATTR_NULL; - term.c.attr.fg = DefaultFG; - term.c.attr.bg = DefaultBG; - term.c.x = term.c.y = 0; - term.hidec = 0; + term.c = (TCursor){{ + .mode = ATTR_NULL, + .fg = DefaultFG, + .bg = DefaultBG + }, .x = 0, .y = 0, .state = CURSOR_DEFAULT}; + term.top = 0, term.bot = term.row - 1; term.mode = MODE_WRAP; tclearregion(0, 0, term.col-1, term.row-1); @@ -338,33 +339,13 @@ treset(void) { void tnew(int col, int row) { - /* screen size */ + /* set screen size */ term.row = row, term.col = col; - term.top = 0, term.bot = term.row - 1; - /* mode */ - term.mode = MODE_WRAP; - /* cursor */ - term.c.attr.mode = ATTR_NULL; - term.c.attr.fg = DefaultFG; - term.c.attr.bg = DefaultBG; - term.c.x = term.c.y = 0; - term.hidec = 0; - /* allocate screen */ - term.line = calloc(term.row, sizeof(Line)); + term.line = malloc(term.row * sizeof(Line)); for(row = 0 ; row < term.row; row++) - term.line[row] = calloc(term.col, sizeof(Glyph)); -} - -/* TODO: Replace with scrollup/scolldown */ -void -tscroll(void) { - Line temp = term.line[term.top]; - int i; - - for(i = term.top; i < term.bot; i++) - term.line[i] = term.line[i+1]; - memset(temp, 0, sizeof(Glyph) * term.col); - term.line[term.bot] = temp; + term.line[row] = malloc(term.col * sizeof(Glyph)); + /* setup screen */ + treset(); } void @@ -393,18 +374,18 @@ tscrollup (int n) { for(i = 0; i < n; i++) memset(term.line[term.top+i], 0, term.col*sizeof(Glyph)); - for(i = term.top; i <= term.bot-n; i++) { + for(i = term.top; i <= term.bot-n; i++) { temp = term.line[i]; term.line[i] = term.line[i+n]; term.line[i+n] = temp; - } + } } void tnewline(void) { int y = term.c.y + 1; if(y > term.bot) - tscroll(), y = term.bot; + tscrollup(1), y = term.bot; tmoveto(0, y); } @@ -434,8 +415,11 @@ csiparse(void) { void tmoveto(int x, int y) { - term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x; - term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y; + LIMIT(x, 0, term.col-1); + LIMIT(y, 0, term.row-1); + term.c.state &= ~CURSOR_WRAPNEXT; + term.c.x = x; + term.c.y = y; } void @@ -731,7 +715,7 @@ csihandle(void) { case 12: /* att610 -- Stop blinking cursor (IGNORED) */ break; case 25: - term.hidec = 1; + term.c.state |= CURSOR_HIDE; break; case 1048: /* XXX: no alt. screen to erase/save */ case 1049: @@ -780,7 +764,7 @@ csihandle(void) { case 12: /* att610 -- Start blinking cursor (IGNORED) */ break; case 25: - term.hidec = 0; + term.c.state &= ~CURSOR_HIDE; break; case 1048: case 1049: /* XXX: no alt. screen to erase/save */ @@ -808,6 +792,7 @@ csihandle(void) { DEFAULT(escseq.arg[0], 1); DEFAULT(escseq.arg[1], term.row); tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1); + tmoveto(0, 0); } break; case 's': /* DECSC -- Save cursor position (ANSI.SYS) */ @@ -887,20 +872,11 @@ tputc(char c) { case '(': term.esc |= ESC_ALTCHARSET; break; - case 'A': - tmoveto(term.c.x, term.c.y-1); - term.esc = 0; - break; - case 'B': - tmoveto(term.c.x, term.c.y+1); - term.esc = 0; - break; - case 'C': - tmoveto(term.c.x+1, term.c.y); - term.esc = 0; - break; - case 'D': /* XXX: CUP (VT100) or IND (VT52) ... */ - tmoveto(term.c.x-1, term.c.y); + case 'D': /* IND -- Linefeed */ + if(term.c.y == term.bot) + tscrollup(1); + else + tmoveto(term.c.x, term.c.y+1); term.esc = 0; break; case 'E': /* NEL -- Next line */ @@ -961,11 +937,13 @@ tputc(char c) { term.esc = ESC_START; break; default: + if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT) + tnewline(); tsetchar(c); - if(term.c.x+1 < term.col) { + if(term.c.x+1 < term.col) tmoveto(term.c.x+1, term.c.y); - } else if(IS_SET(MODE_WRAP)) - tnewline(); + else + term.c.state |= CURSOR_WRAPNEXT; break; } } @@ -1003,13 +981,12 @@ tresize(int col, int row) { for(/* i == minrow */; i < row; i++) term.line[i] = calloc(col, sizeof(Glyph)); - LIMIT(term.c.x, 0, col-1); - LIMIT(term.c.y, 0, row-1); - LIMIT(term.top, 0, row-1); - LIMIT(term.bot, 0, row-1); - - term.bot = row-1; + /* update terminal size */ term.col = col, term.row = row; + /* make use of the LIMIT in tmoveto */ + tmoveto(term.c.x, term.c.y); + /* reset scrolling region */ + tsetscroll(0, row-1); } void @@ -1141,7 +1118,7 @@ xdraws(char *s, Glyph base, int x, int y, int len) { } void -xcursor(int mode) { +xcursor(void) { static int oldx = 0; static int oldy = 0; Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0}; @@ -1159,7 +1136,7 @@ xcursor(int mode) { xclear(oldx, oldy, oldx, oldy); /* draw the new one */ - if(mode == CURSOR_DRAW) { + if(!(term.c.state & CURSOR_HIDE)) { xdraws(&g.c, g, term.c.x, term.c.y, 1); oldx = term.c.x, oldy = term.c.y; } @@ -1186,8 +1163,7 @@ draw(int dummy) { if(term.line[y][x].state & GLYPH_SET) xdrawc(x, y, term.line[y][x]); - if(!term.hidec) - xcursor(CURSOR_DRAW); + xcursor(); XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER); XFlush(xw.dis); } @@ -1201,25 +1177,29 @@ draw(int redraw_all) { char buf[DRAW_BUF_SIZ]; XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]); - XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.w, xw.h); + XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.bufw, xw.bufh); for(y = 0; y < term.row; y++) { base = term.line[y][0]; i = ox = 0; for(x = 0; x < term.col; x++) { new = term.line[y][x]; - if(!ATTRCMP(base, new) && i < DRAW_BUF_SIZ) - buf[i++] = new.c; - else { + if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) || + i >= DRAW_BUF_SIZ)) { xdraws(buf, base, ox, y, i); - buf[0] = new.c; - i = 1; - ox = x; - base = new; + i = 0; + } + if(new.state & GLYPH_SET) { + if(i == 0) { + ox = x; + base = new; + } + buf[i++] = new.c; } } - xdraws(buf, base, ox, y, i); + if(i > 0) + xdraws(buf, base, ox, y, i); } - xcursor(term.hidec ? CURSOR_HIDE : CURSOR_DRAW); + xcursor(); XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER); XFlush(xw.dis); } @@ -1314,7 +1294,7 @@ run(void) { FD_ZERO(&rfd); FD_SET(cmdfd, &rfd); FD_SET(xfd, &rfd); - if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) == -1) { + if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) < 0) { if(errno == EINTR) continue; die("select failed: %s\n", SERRNO);