X-Git-Url: https://jasonwoof.com/gitweb/?p=st.git;a=blobdiff_plain;f=st.c;h=8059b1656c11587a12d412bea31462b33cba266f;hp=bfbe799fece6de22fb32b7351f6ee50dc6b29c1d;hb=866590521609ba35606e53990e381bdc2adf742f;hpb=76a8e5f72b542f230d7248c09efe202a12bc3771

diff --git a/st.c b/st.c
index bfbe799..8059b16 100644
--- a/st.c
+++ b/st.c
@@ -96,8 +96,8 @@ enum cursor_movement {
 
 enum cursor_state {
 	CURSOR_DEFAULT  = 0,
-	CURSOR_HIDE     = 1,
-	CURSOR_WRAPNEXT = 2
+	CURSOR_WRAPNEXT = 1,
+	CURSOR_ORIGIN	= 2
 };
 
 enum glyph_state {
@@ -115,7 +115,8 @@ enum term_mode {
 	MODE_MOUSEMOTION = 64,
 	MODE_MOUSE       = 32|64,
 	MODE_REVERSE     = 128,
-	MODE_KBDLOCK     = 256
+	MODE_KBDLOCK     = 256,
+	MODE_HIDE      = 512
 };
 
 enum escape_state {
@@ -300,6 +301,7 @@ static void tdeleteline(int);
 static void tinsertblank(int);
 static void tinsertblankline(int);
 static void tmoveto(int, int);
+static void tmoveato(int x, int y);
 static void tnew(int, int);
 static void tnewline(int);
 static void tputtab(bool);
@@ -673,6 +675,10 @@ bpress(XEvent *e) {
 		sel.mode = 1;
 		sel.ex = sel.bx = x2col(e->xbutton.x);
 		sel.ey = sel.by = y2row(e->xbutton.y);
+	} else if(e->xbutton.button == Button4) {
+		ttywrite("\031", 1);
+	} else if(e->xbutton.button == Button5) {
+		ttywrite("\005", 1);
 	}
 }
 
@@ -1072,6 +1078,8 @@ treset(void) {
 	term.mode = MODE_WRAP;
 
 	tclearregion(0, 0, term.col-1, term.row-1);
+	tmoveto(0, 0);
+	tcursor(CURSOR_SAVE);
 }
 
 void
@@ -1205,10 +1213,25 @@ csiparse(void) {
 	}
 }
 
+/* for absolute user moves, when decom is set */
+void
+tmoveato(int x, int y) {
+	tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
+}
+
 void
 tmoveto(int x, int y) {
+	int miny, maxy;
+
+	if(term.c.state & CURSOR_ORIGIN) {
+		miny = term.top;
+		maxy = term.bot;
+	} else {
+		miny = 0;
+		maxy = term.row - 1;
+	}
 	LIMIT(x, 0, term.col-1);
-	LIMIT(y, 0, term.row-1);
+	LIMIT(y, miny, maxy);
 	term.c.state &= ~CURSOR_WRAPNEXT;
 	term.c.x = x;
 	term.c.y = y;
@@ -1450,18 +1473,25 @@ tsetmode(bool priv, bool set, int *args, int narg) {
 				if(mode != term.mode)
 					redraw();
 				break;
-			case 6: /* XXX: DECOM -- Origin */
+			case 6: /* DECOM -- Origin */
+				MODBIT(term.c.state, set, CURSOR_ORIGIN);
+				tmoveato(0, 0);
 				break;
 			case 7: /* DECAWM -- Auto wrap */
 				MODBIT(term.mode, set, MODE_WRAP);
 				break;
-			case 8: /* XXX: DECARM -- Auto repeat */
-				break;
 			case 0:  /* Error (IGNORED) */
+			case 2:  /* DECANM -- ANSI/VT52 (IGNORED) */
+			case 3:  /* DECCOLM -- Column  (IGNORED) */
+			case 4:  /* DECSCLM -- Scroll (IGNORED) */
+			case 8:  /* DECARM -- Auto repeat (IGNORED) */
+			case 18: /* DECPFF -- Printer feed (IGNORED) */
+			case 19: /* DECPEX -- Printer extent (IGNORED) */
+			case 42: /* DECNRCM -- National characters (IGNORED) */
 			case 12: /* att610 -- Start blinking cursor (IGNORED) */
 				break;
-			case 25:
-				MODBIT(term.c.state, !set, CURSOR_HIDE);
+			case 25: /* DECTCEM -- Text Cursor Enable Mode */
+				MODBIT(term.mode, !set, MODE_HIDE);
 				break;
 			case 1000: /* 1000,1002: enable xterm mouse report */
 				MODBIT(term.mode, set, MODE_MOUSEBTN);
@@ -1471,26 +1501,20 @@ tsetmode(bool priv, bool set, int *args, int narg) {
 				break;
 			case 1049: /* = 1047 and 1048 */
 			case 47:
-			case 1047:
-				if(IS_SET(MODE_ALTSCREEN))
+			case 1047: {
+				bool alt = IS_SET(MODE_ALTSCREEN) != 0;
+				if(alt)
 					tclearregion(0, 0, term.col-1, term.row-1);
-				if((set && !IS_SET(MODE_ALTSCREEN)) ||
-						(!set && IS_SET(MODE_ALTSCREEN))) {
+				if(set ^ alt)		/* set is always 1 or 0 */
 					tswapscreen();
-				}
 				if(*args != 1049)
 					break;
+			}
 				/* pass through */
 			case 1048:
 				tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
 				break;
 			default:
-			/* case 2:  DECANM -- ANSI/VT52 (NOT SUPPOURTED) */
-			/* case 3:  DECCOLM -- Column  (NOT SUPPORTED) */
-			/* case 4:  DECSCLM -- Scroll (NOT SUPPORTED) */
-			/* case 18: DECPFF -- Printer feed (NOT SUPPORTED) */
-			/* case 19: DECPEX -- Printer extent (NOT SUPPORTED) */
-			/* case 42: DECNRCM -- National characters (NOT SUPPORTED) */
 				fprintf(stderr,
 					"erresc: unknown private set/reset mode %d\n",
 					*args);
@@ -1537,11 +1561,11 @@ csihandle(void) {
 		tinsertblank(csiescseq.arg[0]);
 		break;
 	case 'A': /* CUU -- Cursor <n> Up */
-	case 'e':
 		DEFAULT(csiescseq.arg[0], 1);
 		tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
 		break;
 	case 'B': /* CUD -- Cursor <n> Down */
+	case 'e': /* VPR --Cursor <n> Down */
 		DEFAULT(csiescseq.arg[0], 1);
 		tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
 		break;
@@ -1550,7 +1574,7 @@ csihandle(void) {
 			ttywrite(VT102ID, sizeof(VT102ID) - 1);
 		break;
 	case 'C': /* CUF -- Cursor <n> Forward */
-	case 'a':
+	case 'a': /* HPR -- Cursor <n> Forward */
 		DEFAULT(csiescseq.arg[0], 1);
 		tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
 		break;
@@ -1587,7 +1611,7 @@ csihandle(void) {
 	case 'f': /* HVP */
 		DEFAULT(csiescseq.arg[0], 1);
 		DEFAULT(csiescseq.arg[1], 1);
-		tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
+		tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
 		break;
 	case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
 		DEFAULT(csiescseq.arg[0], 1);
@@ -1661,7 +1685,7 @@ csihandle(void) {
 		break;
 	case 'd': /* VPA -- Move to <row> */
 		DEFAULT(csiescseq.arg[0], 1);
-		tmoveto(term.c.x, csiescseq.arg[0]-1);
+		tmoveato(term.c.x, csiescseq.arg[0]-1);
 		break;
 	case 'h': /* SM -- Set terminal mode */
 		tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
@@ -1676,7 +1700,7 @@ csihandle(void) {
 			DEFAULT(csiescseq.arg[0], 1);
 			DEFAULT(csiescseq.arg[1], term.row);
 			tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
-			tmoveto(0, 0);
+			tmoveato(0, 0);
 		}
 		break;
 	case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
@@ -1834,8 +1858,8 @@ tputc(char *c, int len) {
 		}
 	}
 	/*
-	 * STR sequences must be checked before of anything
-	 * because it can use some control codes as part of the sequence
+	 * STR sequences must be checked before anything else
+	 * because it can use some control codes as part of the sequence.
 	 */
 	if(term.esc & ESC_STR) {
 		switch(ascii) {
@@ -1855,6 +1879,7 @@ tputc(char *c, int len) {
 		}
 		return;
 	}
+
 	/*
 	 * Actions of control codes must be performed as soon they arrive
 	 * because they can be embedded inside a control sequence, and
@@ -1895,11 +1920,11 @@ tputc(char *c, int len) {
 		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) */
+		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) {
@@ -2112,10 +2137,10 @@ tresize(int col, int row) {
 	/* 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);
+	/* make use of the LIMIT in tmoveto */
+	tmoveto(term.c.x, term.c.y);
 
 	return (slide > 0);
 }
@@ -2398,9 +2423,6 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
 		 *temp, revfg, revbg;
 	XRenderColor colfg, colbg;
 
-	if(base.mode & ATTR_REVERSE)
-		temp = fg, fg = bg, bg = temp;
-
 	if(base.mode & ATTR_BOLD) {
 		if(BETWEEN(base.fg, 0, 7)) {
 			/* basic system colors */
@@ -2450,6 +2472,9 @@ xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
 		}
 	}
 
+	if(base.mode & ATTR_REVERSE)
+		temp = fg, fg = bg, bg = temp;
+
 	XftTextExtentsUtf8(xw.dpy, font->xft_set, (FcChar8 *)s, bytelen,
 			&extents);
 	width = extents.xOff;
@@ -2500,7 +2525,7 @@ xdrawcursor(void) {
 	}
 
 	/* draw the new one */
-	if(!(term.c.state & CURSOR_HIDE)) {
+	if(!(IS_SET(MODE_HIDE))) {
 		if(!(xw.state & WIN_FOCUSED))
 			g.bg = defaultucs;
 
@@ -2541,9 +2566,9 @@ drawregion(int x1, int y1, int x2, int y2) {
 	int ic, ib, x, y, ox, sl;
 	Glyph base, new;
 	char buf[DRAW_BUF_SIZ];
-	bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
+	bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN) != 0;
 
-	if((sel.alt && !alt) || (!sel.alt && alt))
+	if((sel.alt != 0) ^ alt)
 		ena_sel = 0;
 	if(!(xw.state & WIN_VISIBLE))
 		return;
@@ -2694,6 +2719,9 @@ kpress(XEvent *ev) {
 				selpaste();
 			break;
 		case XK_Return:
+			if(meta)
+				ttywrite("\033", 1);
+
 			if(IS_SET(MODE_CRLF)) {
 				ttywrite("\r\n", 2);
 			} else {
@@ -2742,8 +2770,6 @@ cresize(int width, int height)
 
 	col = (xw.w - 2*borderpx) / xw.cw;
 	row = (xw.h - 2*borderpx) / xw.ch;
-	if(col == term.col && row == term.row)
-		return;
 
 	tresize(col, row);
 	xresize(col, row);