X-Git-Url: https://git.xinqibao.xyz/dmenu.git/blobdiff_plain/30d72e5f8730bd8e16ead1b3ed40663d1f850fa4..f555908cef580106a50c53e096ec12bf4d2bb2e2:/main.c

diff --git a/main.c b/main.c
index 840a7bc..fa03ec8 100644
--- a/main.c
+++ b/main.c
@@ -1,20 +1,19 @@
-/*
- * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
- * (C)opyright MMVI Sander van Dijk <a dot h dot vandijk at gmail dot com>
+/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
+ * (C)opyright MMVI-MMVII Sander van Dijk <a dot h dot vandijk at gmail dot com>
  * See LICENSE file for license details.
  */
-
 #include "dmenu.h"
-
 #include <ctype.h>
+#include <locale.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
-#include <X11/cursorfont.h>
 #include <X11/Xutil.h>
 #include <X11/keysym.h>
 
+#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
+
 typedef struct Item Item;
 struct Item {
 	Item *next;		/* traverses all items */
@@ -25,10 +24,13 @@ struct Item {
 /* static */
 
 static char text[4096];
-static int mx, my, mw, mh;
+static char *prompt = NULL;
+static int mw, mh;
 static int ret = 0;
 static int nitem = 0;
 static unsigned int cmdw = 0;
+static unsigned int promptw = 0;
+static unsigned int numlockmask = 0;
 static Bool running = True;
 static Item *allitems = NULL;	/* first of all items */
 static Item *item = NULL;	/* first of pattern matching items */
@@ -40,14 +42,12 @@ static Window root;
 static Window win;
 
 static void
-calcoffsets()
-{
+calcoffsets(void) {
 	unsigned int tw, w;
 
 	if(!curr)
 		return;
-
-	w = cmdw + 2 * SPACE;
+	w = promptw + cmdw + 2 * SPACE;
 	for(next = curr; next; next=next->right) {
 		tw = textw(next->text);
 		if(tw > mw / 3)
@@ -56,8 +56,7 @@ calcoffsets()
 		if(w > mw)
 			break;
 	}
-
-	w = cmdw + 2 * SPACE;
+	w = promptw + cmdw + 2 * SPACE;
 	for(prev = curr; prev && prev->left; prev=prev->left) {
 		tw = textw(prev->left->text);
 		if(tw > mw / 3)
@@ -69,57 +68,117 @@ calcoffsets()
 }
 
 static void
-drawmenu()
-{
+drawmenu(void) {
 	Item *i;
 
 	dc.x = 0;
 	dc.y = 0;
 	dc.w = mw;
 	dc.h = mh;
-	drawtext(NULL, False, False);
-
+	drawtext(NULL, dc.norm);
+	/* print prompt? */
+	if(promptw) {
+		dc.w = promptw;
+		drawtext(prompt, dc.sel);
+	}
+	dc.x += promptw;
+	dc.w = mw - promptw;
 	/* print command */
 	if(cmdw && item)
 		dc.w = cmdw;
-	drawtext(text[0] ? text : NULL, False, False);
+	drawtext(text[0] ? text : NULL, dc.norm);
 	dc.x += cmdw;
-
 	if(curr) {
 		dc.w = SPACE;
-		drawtext((curr && curr->left) ? "<" : NULL, False, False);
+		drawtext((curr && curr->left) ? "<" : NULL, dc.norm);
 		dc.x += dc.w;
-
 		/* determine maximum items */
 		for(i = curr; i != next; i=i->right) {
 			dc.w = textw(i->text);
 			if(dc.w > mw / 3)
 				dc.w = mw / 3;
-			drawtext(i->text, sel == i, sel == i);
+			drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
 			dc.x += dc.w;
 		}
-
 		dc.x = mw - SPACE;
 		dc.w = SPACE;
-		drawtext(next ? ">" : NULL, False, False);
+		drawtext(next ? ">" : NULL, dc.norm);
 	}
 	XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, mw, mh, 0, 0);
 	XFlush(dpy);
 }
 
+static Bool
+grabkeyboard(void) {
+	unsigned int len;
+
+	for(len = 1000; len; len--) {
+		if(XGrabKeyboard(dpy, root, True, GrabModeAsync, GrabModeAsync, CurrentTime)
+			== GrabSuccess)
+			break;
+		usleep(1000);
+	}
+	return len > 0;
+}
+
+static unsigned long
+initcolor(const char *colstr) {
+	Colormap cmap = DefaultColormap(dpy, screen);
+	XColor color;
+
+	if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
+		eprint("error, cannot allocate color '%s'\n", colstr);
+	return color.pixel;
+}
+
 static void
-match(char *pattern)
-{
+initfont(const char *fontstr) {
+	char *def, **missing;
+	int i, n;
+
+	missing = NULL;
+	if(dc.font.set)
+		XFreeFontSet(dpy, dc.font.set);
+	dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
+	if(missing)
+		XFreeStringList(missing);
+	if(dc.font.set) {
+		XFontSetExtents *font_extents;
+		XFontStruct **xfonts;
+		char **font_names;
+		dc.font.ascent = dc.font.descent = 0;
+		font_extents = XExtentsOfFontSet(dc.font.set);
+		n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
+		for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
+			if(dc.font.ascent < (*xfonts)->ascent)
+				dc.font.ascent = (*xfonts)->ascent;
+			if(dc.font.descent < (*xfonts)->descent)
+				dc.font.descent = (*xfonts)->descent;
+			xfonts++;
+		}
+	}
+	else {
+		if(dc.font.xfont)
+			XFreeFont(dpy, dc.font.xfont);
+		dc.font.xfont = NULL;
+		if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr)))
+			eprint("error, cannot load font: '%s'\n", fontstr);
+		dc.font.ascent = dc.font.xfont->ascent;
+		dc.font.descent = dc.font.xfont->descent;
+	}
+	dc.font.height = dc.font.ascent + dc.font.descent;
+}
+
+static void
+match(char *pattern) {
 	unsigned int plen;
 	Item *i, *j;
 
 	if(!pattern)
 		return;
-
 	plen = strlen(pattern);
 	item = j = NULL;
 	nitem = 0;
-
 	for(i = allitems; i; i=i->next)
 		if(!plen || !strncmp(pattern, i->text, plen)) {
 			if(!j)
@@ -143,48 +202,124 @@ match(char *pattern)
 			j = i;
 			nitem++;
 		}
-
 	curr = prev = next = sel = item;
 	calcoffsets();
 }
 
 static void
-kpress(XKeyEvent * e)
-{
+kpress(XKeyEvent * e) {
 	char buf[32];
-	int num, prev_nitem;
-	unsigned int i, len;
+	int i, num;
+	unsigned int len;
 	KeySym ksym;
 
 	len = strlen(text);
 	buf[0] = 0;
-	num = XLookupString(e, buf, sizeof(buf), &ksym, 0);
-
+	num = XLookupString(e, buf, sizeof buf, &ksym, 0);
 	if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
 			|| IsMiscFunctionKey(ksym) || IsPFKey(ksym)
 			|| IsPrivateKeypadKey(ksym))
 		return;
-
 	/* first check if a control mask is omitted */
 	if(e->state & ControlMask) {
 		switch (ksym) {
 		default:	/* ignore other control sequences */
 			return;
+		case XK_bracketleft:
+			ksym = XK_Escape;
 			break;
 		case XK_h:
 		case XK_H:
 			ksym = XK_BackSpace;
 			break;
+		case XK_i:
+		case XK_I:
+			ksym = XK_Tab;
+			break;
+		case XK_j:
+		case XK_J:
+			ksym = XK_Return;
+			break;
 		case XK_u:
 		case XK_U:
 			text[0] = 0;
 			match(text);
 			drawmenu();
 			return;
+		case XK_w:
+		case XK_W:
+			if(len) {
+				i = len - 1;
+				while(i >= 0 && text[i] == ' ')
+					text[i--] = 0;
+				while(i >= 0 && text[i] != ' ')
+					text[i--] = 0;
+				match(text);
+				drawmenu();
+			}
+			return;
+		}
+	}
+	if(CLEANMASK(e->state) & Mod1Mask) {
+		switch(ksym) {
+		default: return;
+		case XK_h:
+			ksym = XK_Left;
+			break;
+		case XK_l:
+			ksym = XK_Right;
+			break;
+		case XK_j:
+			ksym = XK_Next;
+			break;
+		case XK_k:
+			ksym = XK_Prior;
+			break;
+		case XK_g:
+			ksym = XK_Home;
+			break;
+		case XK_G:
+			ksym = XK_End;
 			break;
 		}
 	}
 	switch(ksym) {
+	default:
+		if(num && !iscntrl((int) buf[0])) {
+			buf[num] = 0;
+			if(len > 0)
+				strncat(text, buf, sizeof text);
+			else
+				strncpy(text, buf, sizeof text);
+			match(text);
+		}
+		break;
+	case XK_BackSpace:
+		if(len) {
+			text[--len] = 0;
+			match(text);
+		}
+		break;
+	case XK_End:
+		if(!item)
+			return;
+		while(next) {
+			sel = curr = next;
+			calcoffsets();
+		}
+		while(sel && sel->right)
+			sel = sel->right;
+		break;
+	case XK_Escape:
+		ret = 1;
+		running = False;
+		break;
+	case XK_Home:
+		if(!item)
+			return;
+		sel = curr = item;
+		calcoffsets();
+		break;
 	case XK_Left:
 		if(!(sel && sel->left))
 			return;
@@ -194,26 +329,21 @@ kpress(XKeyEvent * e)
 			calcoffsets();
 		}
 		break;
-	case XK_Tab:
-		if(!sel)
+	case XK_Next:
+		if(!next)
 			return;
-		strncpy(text, sel->text, sizeof(text));
-		match(text);
+		sel = curr = next;
+		calcoffsets();
 		break;
-	case XK_Right:
-		if(!(sel && sel->right))
+	case XK_Prior:
+		if(!prev)
 			return;
-		sel=sel->right;
-		if(sel == next) {
-			curr = next;
-			calcoffsets();
-		}
+		sel = curr = prev;
+		calcoffsets();
 		break;
 	case XK_Return:
-		if(e->state & ShiftMask) {
-			if(text)
-				fprintf(stdout, "%s", text);
-		}
+		if((e->state & ShiftMask) && text)
+			fprintf(stdout, "%s", text);
 		else if(sel)
 			fprintf(stdout, "%s", sel->text);
 		else if(text)
@@ -221,43 +351,34 @@ kpress(XKeyEvent * e)
 		fflush(stdout);
 		running = False;
 		break;
-	case XK_Escape:
-		ret = 1;
-		running = False;
-		break;
-	case XK_BackSpace:
-		if((i = len)) {
-			prev_nitem = nitem;
-			do {
-				text[--i] = 0;
-				match(text);
-			} while(i && nitem && prev_nitem == nitem);
-			match(text);
+	case XK_Right:
+		if(!(sel && sel->right))
+			return;
+		sel=sel->right;
+		if(sel == next) {
+			curr = next;
+			calcoffsets();
 		}
 		break;
-	default:
-		if(num && !iscntrl((int) buf[0])) {
-			buf[num] = 0;
-			if(len > 0)
-				strncat(text, buf, sizeof(text));
-			else
-				strncpy(text, buf, sizeof(text));
-			match(text);
-		}
+	case XK_Tab:
+		if(!sel)
+			return;
+		strncpy(text, sel->text, sizeof text);
+		match(text);
+		break;
 	}
 	drawmenu();
 }
 
 static char *
-readstdin()
-{
+readstdin(void) {
 	static char *maxname = NULL;
 	char *p, buf[1024];
 	unsigned int len = 0, max = 0;
 	Item *i, *new;
 
 	i = 0;
-	while(fgets(buf, sizeof(buf), stdin)) {
+	while(fgets(buf, sizeof buf, stdin)) {
 		len = strlen(buf);
 		if (buf[len - 1] == '\n')
 			buf[len - 1] = 0;
@@ -266,7 +387,6 @@ readstdin()
 			maxname = p;
 			max = len;
 		}
-
 		new = emalloc(sizeof(Item));
 		new->next = new->left = new->right = NULL;
 		new->text = p;
@@ -280,6 +400,12 @@ readstdin()
 	return maxname;
 }
 
+static void
+usage(void) {
+	eprint("usage: dmenu [-b] [-fn <font>] [-nb <color>] [-nf <color>]\n"
+		"             [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n");
+}
+
 /* extern */
 
 int screen;
@@ -287,63 +413,102 @@ Display *dpy;
 DC dc = {0};
 
 int
-main(int argc, char *argv[])
-{
+main(int argc, char *argv[]) {
+	Bool bottom = False;
+	char *font = FONT;
 	char *maxname;
-	Item *i;
+	char *normbg = NORMBGCOLOR;
+	char *normfg = NORMFGCOLOR;
+	char *selbg = SELBGCOLOR;
+	char *selfg = SELFGCOLOR;
+	int i, j;
+	Item *itm;
 	XEvent ev;
+	XModifierKeymap *modmap;
 	XSetWindowAttributes wa;
 
-	if(argc == 2 && !strncmp("-v", argv[1], 3)) {
-		fputs("dmenu-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
-		exit(EXIT_SUCCESS);
-	}
-	else if(argc != 1)
-		eprint("usage: dmenu [-v]\n");
-
+	/* command line args */
+	for(i = 1; i < argc; i++)
+		if(!strncmp(argv[i], "-b", 3)) {
+			bottom = True;
+		}
+		else if(!strncmp(argv[i], "-fn", 4)) {
+			if(++i < argc) font = argv[i];
+		}
+		else if(!strncmp(argv[i], "-nb", 4)) {
+			if(++i < argc) normbg = argv[i];
+		}
+		else if(!strncmp(argv[i], "-nf", 4)) {
+			if(++i < argc) normfg = argv[i];
+		}
+		else if(!strncmp(argv[i], "-p", 3)) {
+			if(++i < argc) prompt = argv[i];
+		}
+		else if(!strncmp(argv[i], "-sb", 4)) {
+			if(++i < argc) selbg = argv[i];
+		}
+		else if(!strncmp(argv[i], "-sf", 4)) {
+			if(++i < argc) selfg = argv[i];
+		}
+		else if(!strncmp(argv[i], "-v", 3))
+			eprint("dmenu-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n");
+		else
+			usage();
+	setlocale(LC_CTYPE, "");
 	dpy = XOpenDisplay(0);
 	if(!dpy)
 		eprint("dmenu: cannot open display\n");
 	screen = DefaultScreen(dpy);
 	root = RootWindow(dpy, screen);
-
-	maxname = readstdin();
-
-	/* grab as early as possible, but after reading all items!!! */
-	while(XGrabKeyboard(dpy, root, True, GrabModeAsync,
-			 GrabModeAsync, CurrentTime) != GrabSuccess)
-		usleep(1000);
-
+	if(isatty(STDIN_FILENO)) {
+		maxname = readstdin();
+		running = grabkeyboard();
+	}
+	else { /* prevent keypress loss */
+		running = grabkeyboard();
+		maxname = readstdin();
+	}
+	/* init modifier map */
+	modmap = XGetModifierMapping(dpy);
+	for (i = 0; i < 8; i++) {
+		for (j = 0; j < modmap->max_keypermod; j++) {
+			if(modmap->modifiermap[i * modmap->max_keypermod + j]
+			== XKeysymToKeycode(dpy, XK_Num_Lock))
+				numlockmask = (1 << i);
+		}
+	}
+	XFreeModifiermap(modmap);
 	/* style */
-	dc.bg = getcolor(BGCOLOR);
-	dc.fg = getcolor(FGCOLOR);
-	dc.border = getcolor(BORDERCOLOR);
-	setfont(FONT);
-
+	dc.norm[ColBG] = initcolor(normbg);
+	dc.norm[ColFG] = initcolor(normfg);
+	dc.sel[ColBG] = initcolor(selbg);
+	dc.sel[ColFG] = initcolor(selfg);
+	initfont(font);
+	/* menu window */
 	wa.override_redirect = 1;
 	wa.background_pixmap = ParentRelative;
 	wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask;
-
-	mx = my = 0;
 	mw = DisplayWidth(dpy, screen);
-	mh = dc.font.height + 4;
-
-	win = XCreateWindow(dpy, root, mx, my, mw, mh, 0,
+	mh = dc.font.height + 2;
+	win = XCreateWindow(dpy, root, 0,
+			bottom ? DisplayHeight(dpy, screen) - mh : 0, mw, mh, 0,
 			DefaultDepth(dpy, screen), CopyFromParent,
 			DefaultVisual(dpy, screen),
 			CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
-	XDefineCursor(dpy, win, XCreateFontCursor(dpy, XC_xterm));
-
 	/* pixmap */
 	dc.drawable = XCreatePixmap(dpy, root, mw, mh, DefaultDepth(dpy, screen));
 	dc.gc = XCreateGC(dpy, root, 0, 0);
 	XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
-
+	if(!dc.font.set)
+		XSetFont(dpy, dc.gc, dc.font.xfont->fid);
 	if(maxname)
 		cmdw = textw(maxname);
 	if(cmdw > mw / 3)
 		cmdw = mw / 3;
-
+	if(prompt)
+		promptw = textw(prompt);
+	if(promptw > mw / 5)
+		promptw = mw / 5;
 	text[0] = 0;
 	match(text);
 	XMapRaised(dpy, win);
@@ -351,8 +516,10 @@ main(int argc, char *argv[])
 	XSync(dpy, False);
 
 	/* main event loop */
-	while(running && !XNextEvent(dpy, &ev)) {
+	while(running && !XNextEvent(dpy, &ev))
 		switch (ev.type) {
+		default:	/* ignore all crap */
+			break;
 		case KeyPress:
 			kpress(&ev.xkey);
 			break;
@@ -360,17 +527,14 @@ main(int argc, char *argv[])
 			if(ev.xexpose.count == 0)
 				drawmenu();
 			break;
-		default:
-			break;
 		}
-	}
 
-	XUngrabKeyboard(dpy, CurrentTime);
+	/* cleanup */
 	while(allitems) {
-		i = allitems->next;
+		itm = allitems->next;
 		free(allitems->text);
 		free(allitems);
-		allitems = i;
+		allitems = itm;
 	}
 	if(dc.font.set)
 		XFreeFontSet(dpy, dc.font.set);
@@ -379,7 +543,7 @@ main(int argc, char *argv[])
 	XFreePixmap(dpy, dc.drawable);
 	XFreeGC(dpy, dc.gc);
 	XDestroyWindow(dpy, win);
+	XUngrabKeyboard(dpy, CurrentTime);
 	XCloseDisplay(dpy);
-
 	return ret;
 }