X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=st.c;h=0c876f5658ea9415d5f20d11e8ff5e1c269b1f81;hb=a79bc96c94e786c0e542539f80b622147d7385ac;hp=fb1172a2bf625fdc22c84f63535534204926d853;hpb=e1ce89f2678628b1c0e904800822a553de2817de;p=st.git

diff --git a/st.c b/st.c
index fb1172a..0c876f5 100644
--- a/st.c
+++ b/st.c
@@ -125,6 +125,15 @@ typedef struct {
 	GC gc;
 } DC;
 
+/* TODO: use better name for vars... */
+typedef struct {
+	int mode;
+	int bx, by;
+	int ex, ey;
+	struct {int x, y;}  b, e;
+	char *clip;
+} Selection;
+
 #include "config.h"
 
 static void die(const char *errstr, ...);
@@ -177,6 +186,9 @@ static char* kmap(KeySym);
 static void kpress(XEvent *);
 static void resize(XEvent *);
 static void focus(XEvent *);
+static void brelease(XEvent *);
+static void bpress(XEvent *);
+static void bmotion(XEvent *);
 
 
 static void (*handler[LASTEvent])(XEvent *) = {
@@ -185,6 +197,9 @@ static void (*handler[LASTEvent])(XEvent *) = {
 	[ConfigureNotify] = resize,
 	[FocusIn] = focus,
 	[FocusOut] = focus,
+	[MotionNotify] = bmotion,
+	[ButtonPress] = bpress,
+	[ButtonRelease] = brelease,
 };
 
 /* Globals */
@@ -194,6 +209,93 @@ static Term term;
 static CSIEscape escseq;
 static int cmdfd;
 static pid_t pid;
+static Selection sel;
+
+void
+selinit(void) {
+	sel.mode = 0;
+	sel.bx = -1;
+	sel.clip = NULL;
+}
+
+static inline int selected(int x, int y) {
+	if(sel.ey == y && sel.by == y) {
+		int bx = MIN(sel.bx, sel.ex);
+		int ex = MAX(sel.bx, sel.ex);
+		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));
+}
+
+static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
+	if(b) *b = e->xbutton.state,
+		*b=*b==4096?5:*b==2048?4:*b==1024?3:*b==512?2:*b==256?1:-1;
+	*x = e->xbutton.x/xw.cw;
+	*y = e->xbutton.y/xw.ch;
+	sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
+	sel.b.y = MIN(sel.by, sel.ey);
+	sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
+	sel.e.y = MAX(sel.by, sel.ey);
+}
+
+static void bpress(XEvent *e) {
+	sel.mode = 1;
+	sel.ex = sel.bx = e->xbutton.x/xw.cw;
+	sel.ey = sel.by = e->xbutton.y/xw.ch;
+}
+
+static char *getseltext() {
+	char *str, *ptr;
+	int ls, x, y, sz;
+	if(sel.bx == -1)
+		return NULL;
+	sz = (term.col+1) * (sel.e.y-sel.b.y+1);
+	ptr = str = malloc(sz);
+	for(y = 0; y < term.row; y++) {
+		for(x = 0; x < term.col; x++)
+			if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y)))
+				*ptr = term.line[y][x].c, ptr++;
+		if(ls)
+			*ptr = '\n', ptr++;
+	}
+	*ptr = 0;
+	return str;
+}
+
+/* TODO: use X11 clipboard */
+static void selcopy(char *str) {
+	free(sel.clip);
+	sel.clip = str;
+}
+
+static void selpaste() {
+	if(sel.clip)
+		ttywrite(sel.clip, strlen(sel.clip));
+}
+
+/* TODO: doubleclick to select word */
+static void brelease(XEvent *e) {
+	int b;
+	sel.mode = 0;
+	getbuttoninfo(e, &b, &sel.ex, &sel.ey);
+	if(sel.bx==sel.ex && sel.by==sel.ey) {
+		sel.bx = -1;
+		if(b==2)
+			selpaste();
+	} else {
+		if(b==1)
+			selcopy(getseltext());
+	}
+	draw(1);
+}
+
+static void bmotion(XEvent *e) {
+	if (sel.mode) {
+		getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
+		draw(1);
+	}
+}
 
 #ifdef DEBUG
 void
@@ -228,7 +330,7 @@ die(const char *errstr, ...) {
 void
 execsh(void) {
 	char *args[3] = {getenv("SHELL"), "-i", NULL};
-	DEFAULT(args[0], "/bin/sh"); /* if getenv() failed */
+	DEFAULT(args[0], SHELL); /* if getenv() failed */
 	putenv("TERM=" TNAME);
 	execvp(args[0], args);
 }
@@ -285,10 +387,10 @@ dump(char c) {
 
 void
 ttyread(void) {
-	char buf[BUFSIZ] = {0};
+	char buf[BUFSIZ];
 	int ret;
 
-	if((ret = read(cmdfd, buf, BUFSIZ)) < 0)
+	if((ret = read(cmdfd, buf, LEN(buf))) < 0)
 		die("Couldn't read from shell: %s\n", SERRNO);
 	else
 		tputs(buf, ret);
@@ -363,8 +465,7 @@ tscrolldown (int n) {
 	
 	LIMIT(n, 0, term.bot-term.top+1);
 
-	for(i = 0; i < n; i++)
-		memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
+	tclearregion(0, term.bot-n+1, term.col-1, term.bot);
 	
 	for(i = term.bot; i >= term.top+n; i--) {
 		temp = term.line[i];
@@ -379,8 +480,7 @@ tscrollup (int n) {
 	Line temp;
 	LIMIT(n, 0, term.bot-term.top+1);
 	
-	for(i = 0; i < n; i++)
-		memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
+	tclearregion(0, term.top, term.col-1, term.top+n-1);
 	
 	for(i = term.top; i <= term.bot-n; i++) { 
 		 temp = term.line[i];
@@ -489,21 +589,16 @@ tinsertblankline(int n) {
 	Line blank;
 	int bot = term.bot;
 
-	if(term.c.y > term.bot)
-		bot = term.row - 1;
-	else if(term.c.y < term.top)
-		bot = term.top - 1;
-	if(term.c.y + n >= bot) {
-		tclearregion(0, term.c.y, term.col-1, bot);
+	if(term.c.y < term.top || term.c.y > term.bot)
 		return;
-	}
+
+	LIMIT(n, 0, bot-term.c.y+1);
+	tclearregion(0, bot-n+1, term.col-1, bot);
 	for(i = bot; i >= term.c.y+n; i--) {
 		/* swap deleted line <-> blanked line */
 		blank = term.line[i];
 		term.line[i] = term.line[i-n];
 		term.line[i-n] = blank;
-		/* blank it */
-		memset(blank, 0, term.col * sizeof(Glyph));
 	}
 }
 
@@ -513,21 +608,16 @@ tdeleteline(int n) {
 	Line blank;
 	int bot = term.bot;
 
-	if(term.c.y > term.bot)
-		bot = term.row - 1;
-	else if(term.c.y < term.top)
-		bot = term.top - 1;
-	if(term.c.y + n >= bot) {
-		tclearregion(0, term.c.y, term.col-1, bot);
+	if(term.c.y < term.top || term.c.y > term.bot)
 		return;
-	}
+
+	LIMIT(n, 0, bot-term.c.y+1);
+	tclearregion(0, term.c.y, term.col-1, term.c.y+n-1);
 	for(i = term.c.y; i <= bot-n; i++) {
 		/* swap deleted line <-> blanked line */
 		blank = term.line[i];
 		term.line[i] = term.line[i+n];
 		term.line[i+n] = blank;
-		/* blank it */
-		memset(blank, 0, term.col * sizeof(Glyph));
 	}
 }
 
@@ -681,7 +771,6 @@ csihandle(void) {
 		case 2: /* all */
 			tclearregion(0, 0, term.col-1, term.row-1);
 			break;
-		case 3: /* XXX: erase saved lines (xterm) */
 		default:
 			goto unknown;
 		}
@@ -725,22 +814,17 @@ csihandle(void) {
 			case 25:
 				term.c.state |= CURSOR_HIDE;
 				break;
+			case 1049: /* = 1047 and 1048 */
 			case 1047:
 				if(IS_SET(MODE_ALTSCREEN)) {
 					tclearregion(0, 0, term.col-1, term.row-1);
 					tswapscreen();
 				}
-				break;
+				if(escseq.arg[0] == 1047)
+					break;
 			case 1048:
 				tcursor(CURSOR_LOAD);
 				break;
-			case 1049:
-				tcursor(CURSOR_LOAD);
-				if(IS_SET(MODE_ALTSCREEN)) {
-					tclearregion(0, 0, term.col-1, term.row-1);
-					tswapscreen();
-				}
-				break;
 			default:
 				goto unknown;
 			}
@@ -785,22 +869,17 @@ csihandle(void) {
 			case 25:
 				term.c.state &= ~CURSOR_HIDE;
 				break;
+			case 1049: /* = 1047 and 1048 */
 			case 1047:
 				if(IS_SET(MODE_ALTSCREEN))
 					tclearregion(0, 0, term.col-1, term.row-1);
 				else
 					tswapscreen();
-				break;				
+				if(escseq.arg[0] == 1047)
+					break;
 			case 1048:
 				tcursor(CURSOR_SAVE);
 				break;
-			case 1049:
-				tcursor(CURSOR_SAVE);
-				if(IS_SET(MODE_ALTSCREEN))
-					tclearregion(0, 0, term.col-1, term.row-1);
-				else
-					tswapscreen();
-				break;
 			default: goto unknown;
 			}
 		} else {
@@ -866,7 +945,8 @@ tputc(char c) {
 				term.esc = 0;
 				csiparse(), csihandle();
 			}
-		} else if(term.esc & ESC_OSC) {
+			/* TODO: handle other OSC */
+		} else if(term.esc & ESC_OSC) { 
 			if(c == ';') {
 				term.titlelen = 0;
 				term.esc = ESC_START | ESC_TITLE;
@@ -932,7 +1012,7 @@ tputc(char c) {
 				term.mode &= ~MODE_APPKEYPAD;
 				term.esc = 0;
 				break;
-			case '7': /* DECSC -- Save Cursor*/
+			case '7': /* DECSC -- Save Cursor */
 				tcursor(CURSOR_SAVE);
 				term.esc = 0;
 				break;
@@ -1003,7 +1083,7 @@ tresize(int col, int row) {
 
 	/* resize to new height */
 	term.line = realloc(term.line, row * sizeof(Line));
-	term.alt = realloc(term.alt,  row * sizeof(Line));
+	term.alt  = realloc(term.alt,  row * sizeof(Line));
 
 	/* resize each row to new width, zero-pad if needed */
 	for(i = 0; i < minrow; i++) {
@@ -1110,17 +1190,23 @@ xinit(void) {
 	xloadcols();
 
 	/* windows */
-	xw.h = term.row * xw.ch + 2*BORDER;
-	xw.w = term.col * xw.cw + 2*BORDER;
+	xw.bufh = term.row * xw.ch;
+	xw.bufw = term.col * xw.cw;
+	xw.h = xw.bufh + 2*BORDER;
+	xw.w = xw.bufw + 2*BORDER;
 	xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
 			xw.w, xw.h, 0,
 			dc.col[DefaultBG],
 			dc.col[DefaultBG]);
-	xw.bufw = xw.w - 2*BORDER;
-	xw.bufh = xw.h - 2*BORDER;
 	xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
 	/* gc */
 	dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
+
+	/* event mask */
+	XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask
+		| StructureNotifyMask | FocusChangeMask | PointerMotionMask
+		| ButtonPressMask | ButtonReleaseMask);
+	
 	XMapWindow(xw.dis, xw.win);
 	xhints();
 	XStoreName(xw.dis, xw.win, "st");
@@ -1210,7 +1296,7 @@ draw(int redraw_all) {
 	int i, x, y, ox;
 	Glyph base, new;
 	char buf[DRAW_BUF_SIZ];
-	
+
 	XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
 	XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.bufw, xw.bufh);
 	for(y = 0; y < term.row; y++) {
@@ -1218,8 +1304,10 @@ draw(int redraw_all) {
 		i = ox = 0;
 		for(x = 0; x < term.col; x++) {
 			new = term.line[y][x];
+			if(sel.bx!=-1 && new.c && selected(x, y))
+				new.mode ^= ATTR_REVERSE;
 			if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
-						i >= DRAW_BUF_SIZ)) {
+					i >= DRAW_BUF_SIZ)) {
 				xdraws(buf, base, ox, y, i);
 				i = 0;
 			}
@@ -1302,7 +1390,7 @@ kpress(XEvent *ev) {
 			break;
 		case XK_Insert:
 			if(shift)
-				draw(1), puts("draw!")/* XXX: paste X clipboard */;
+				selpaste(), draw(1);
 			break;
 		default:
 			fprintf(stderr, "errkey: %d\n", (int)ksym);
@@ -1325,6 +1413,8 @@ resize(XEvent *e) {
 	row = xw.bufh / xw.ch;
 	tresize(col, row);
 	ttyresize(col, row);
+	xw.bufh = MAX(1, xw.bufh);
+	xw.bufw = MAX(1, xw.bufw);
 	XFreePixmap(xw.dis, xw.buf);
 	xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
 	draw(SCREEN_REDRAW);
@@ -1335,12 +1425,8 @@ run(void) {
 	XEvent ev;
 	fd_set rfd;
 	int xfd = XConnectionNumber(xw.dis);
-	long mask = ExposureMask | KeyPressMask | StructureNotifyMask | FocusChangeMask;
-
-	XSelectInput(xw.dis, xw.win, mask);
-	XResizeWindow(xw.dis, xw.win, xw.w, xw.h); /* XXX: fix resize bug in wmii (?) */
 
-	while(1) {
+	for(;;) {
 		FD_ZERO(&rfd);
 		FD_SET(cmdfd, &rfd);
 		FD_SET(xfd, &rfd);
@@ -1371,6 +1457,7 @@ main(int argc, char *argv[]) {
 	tnew(80, 24);
 	ttynew();
 	xinit();
+	selinit();
 	run();
 	return 0;
 }