applied reject no match patch
[dmenu.git] / dmenu.c
diff --git a/dmenu.c b/dmenu.c
index 5e9c367..9a965e1 100644 (file)
--- a/dmenu.c
+++ b/dmenu.c
@@ -6,6 +6,7 @@
 #include <string.h>
 #include <strings.h>
 #include <time.h>
+#include <unistd.h>
 
 #include <X11/Xlib.h>
 #include <X11/Xatom.h>
@@ -14,6 +15,7 @@
 #include <X11/extensions/Xinerama.h>
 #endif
 #include <X11/Xft/Xft.h>
+#include <X11/Xresource.h>
 
 #include "drw.h"
 #include "util.h"
@@ -38,6 +40,7 @@ static char *embed;
 static int bh, mw, mh;
 static int inputw = 0, promptw;
 static int lrpad; /* sum of left and right padding */
+static int reject_no_match = 0;
 static size_t cursor;
 static struct item *items = NULL;
 static struct item *matches, *matchend;
@@ -52,6 +55,10 @@ static XIC xic;
 static Drw *drw;
 static Clr *scheme[SchemeLast];
 
+/* Temporary arrays to allow overriding xresources values */
+static char *colortemp[4];
+static char *tempfonts;
+
 #include "config.h"
 
 static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
@@ -88,6 +95,15 @@ calcoffsets(void)
                        break;
 }
 
+static int
+max_textw(void)
+{
+       int len = 0;
+       for (struct item *item = items; item && item->text; item++)
+               len = MAX(TEXTW(item->text), len);
+       return len;
+}
+
 static void
 cleanup(void)
 {
@@ -144,7 +160,7 @@ drawmenu(void)
        drw_setscheme(drw, scheme[SchemeNorm]);
        drw_text(drw, x, 0, w, bh, lrpad / 2, text, 0);
 
-       drw_font_getexts(drw->fonts, text, cursor, &curpos, NULL);
+       curpos = TEXTW(text) - TEXTW(&text[cursor]);
        if ((curpos += lrpad / 2 - 1) < w) {
                drw_setscheme(drw, scheme[SchemeNorm]);
                drw_rect(drw, x + curpos, 2, 2, bh - 4, 1, 0);
@@ -268,12 +284,26 @@ insert(const char *str, ssize_t n)
 {
        if (strlen(text) + n > sizeof text - 1)
                return;
+
+       static char last[BUFSIZ] = "";
+       if(reject_no_match) {
+               /* store last text value in case we need to revert it */
+               memcpy(last, text, BUFSIZ);
+       }
+
        /* move existing text out of the way, insert new text, and update cursor */
        memmove(&text[cursor + n], &text[cursor], sizeof text - cursor - MAX(n, 0));
        if (n > 0)
                memcpy(&text[cursor], str, n);
        cursor += n;
        match();
+
+       if(!matches && reject_no_match) {
+               /* revert to last text value if theres no match */
+               memcpy(text, last, BUFSIZ);
+               cursor -= n;
+               match();
+       }
 }
 
 static size_t
@@ -308,13 +338,21 @@ keypress(XKeyEvent *ev)
 {
        char buf[32];
        int len;
-       KeySym ksym = NoSymbol;
+       KeySym ksym;
        Status status;
 
        len = XmbLookupString(xic, ev, buf, sizeof buf, &ksym, &status);
-       if (status == XBufferOverflow)
+       switch (status) {
+       default: /* XLookupNone, XBufferOverflow */
                return;
-       if (ev->state & ControlMask)
+       case XLookupChars:
+               goto insert;
+       case XLookupKeySym:
+       case XLookupBoth:
+               break;
+       }
+
+       if (ev->state & ControlMask) {
                switch(ksym) {
                case XK_a: ksym = XK_Home;      break;
                case XK_b: ksym = XK_Left;      break;
@@ -352,12 +390,10 @@ keypress(XKeyEvent *ev)
                        return;
                case XK_Left:
                        movewordedge(-1);
-                       ksym = NoSymbol;
-                       break;
+                       goto draw;
                case XK_Right:
                        movewordedge(+1);
-                       ksym = NoSymbol;
-                       break;
+                       goto draw;
                case XK_Return:
                case XK_KP_Enter:
                        break;
@@ -367,16 +403,14 @@ keypress(XKeyEvent *ev)
                default:
                        return;
                }
-       else if (ev->state & Mod1Mask)
+       } else if (ev->state & Mod1Mask) {
                switch(ksym) {
                case XK_b:
                        movewordedge(-1);
-                       ksym = NoSymbol;
-                       break;
+                       goto draw;
                case XK_f:
                        movewordedge(+1);
-                       ksym = NoSymbol;
-                       break;
+                       goto draw;
                case XK_g: ksym = XK_Home;  break;
                case XK_G: ksym = XK_End;   break;
                case XK_h: ksym = XK_Up;    break;
@@ -386,13 +420,14 @@ keypress(XKeyEvent *ev)
                default:
                        return;
                }
+       }
+
        switch(ksym) {
        default:
+insert:
                if (!iscntrl(*buf))
                        insert(buf, len);
                break;
-       case NoSymbol:
-               break;
        case XK_Delete:
                if (text[cursor] == '\0')
                        return;
@@ -489,6 +524,8 @@ keypress(XKeyEvent *ev)
                match();
                break;
        }
+
+draw:
        drawmenu();
 }
 
@@ -548,6 +585,11 @@ run(void)
                if (XFilterEvent(&ev, win))
                        continue;
                switch(ev.type) {
+               case DestroyNotify:
+                       if (ev.xdestroywindow.window != win)
+                               break;
+                       cleanup();
+                       exit(1);
                case Expose:
                        if (ev.xexpose.count == 0)
                                drw_map(drw, win, 0, 0, mw, mh);
@@ -588,8 +630,13 @@ setup(void)
        int a, di, n, area = 0;
 #endif
        /* init appearance */
-       for (j = 0; j < SchemeLast; j++)
-               scheme[j] = drw_scm_create(drw, colors[j], 2);
+       for (j = 0; j < SchemeLast; j++) {
+               scheme[j] = drw_scm_create(drw, (const char**)colors[j], 2);
+       }
+       for (j = 0; j < SchemeOut; ++j) {
+               for (i = 0; i < 2; ++i)
+                       free(colors[j][i]);
+       }
 
        clip = XInternAtom(dpy, "CLIPBOARD",   False);
        utf8 = XInternAtom(dpy, "UTF8_STRING", False);
@@ -598,6 +645,7 @@ setup(void)
        bh = drw->fonts->h + 2;
        lines = MAX(lines, 0);
        mh = (lines + 1) * bh;
+       promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
 #ifdef XINERAMA
        i = 0;
        if (parentwin == root && (info = XineramaQueryScreens(dpy, &n))) {
@@ -624,9 +672,16 @@ setup(void)
                                if (INTERSECT(x, y, 1, 1, info[i]))
                                        break;
 
-               x = info[i].x_org;
-               y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
-               mw = info[i].width;
+               if (centered) {
+                       mw = MIN(MAX(max_textw() + promptw, min_width), info[i].width);
+                       x = info[i].x_org + ((info[i].width  - mw) / 2);
+                       y = info[i].y_org + ((info[i].height - mh) / 2);
+               } else {
+                       x = info[i].x_org;
+                       y = info[i].y_org + (topbar ? 0 : info[i].height - mh);
+                       mw = info[i].width;
+               }
+
                XFree(info);
        } else
 #endif
@@ -634,11 +689,17 @@ setup(void)
                if (!XGetWindowAttributes(dpy, parentwin, &wa))
                        die("could not get embedding window attributes: 0x%lx",
                            parentwin);
-               x = 0;
-               y = topbar ? 0 : wa.height - mh;
-               mw = wa.width;
+
+               if (centered) {
+                       mw = MIN(MAX(max_textw() + promptw, min_width), wa.width);
+                       x = (wa.width  - mw) / 2;
+                       y = (wa.height - mh) / 2;
+               } else {
+                       x = 0;
+                       y = topbar ? 0 : wa.height - mh;
+                       mw = wa.width;
+               }
        }
-       promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
        inputw = MIN(inputw, mw/3);
        match();
 
@@ -646,19 +707,23 @@ setup(void)
        swa.override_redirect = True;
        swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
        swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
-       win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
+       win = XCreateWindow(dpy, parentwin, x, y, mw, mh, border_width,
                            CopyFromParent, CopyFromParent, CopyFromParent,
                            CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
++      XSetWindowBorder(dpy, win, scheme[SchemeSel][ColBg].pixel);
        XSetClassHint(dpy, win, &ch);
 
-       /* open input methods */
-       xim = XOpenIM(dpy, NULL, NULL, NULL);
+
+       /* input methods */
+       if ((xim = XOpenIM(dpy, NULL, NULL, NULL)) == NULL)
+               die("XOpenIM failed: could not open input device");
+
        xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
                        XNClientWindow, win, XNFocusWindow, win, NULL);
 
        XMapRaised(dpy, win);
        if (embed) {
-               XSelectInput(dpy, parentwin, FocusChangeMask);
+               XSelectInput(dpy, parentwin, FocusChangeMask | SubstructureNotifyMask);
                if (XQueryTree(dpy, parentwin, &dw, &w, &dws, &du) && dws) {
                        for (i = 0; i < du && dws[i] != win; ++i)
                                XSelectInput(dpy, dws[i], FocusChangeMask);
@@ -673,11 +738,46 @@ setup(void)
 static void
 usage(void)
 {
-       fputs("usage: dmenu [-bfiv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
+       fputs("usage: dmenu [-bfirv] [-l lines] [-p prompt] [-fn font] [-m monitor]\n"
              "             [-nb color] [-nf color] [-sb color] [-sf color] [-w windowid]\n", stderr);
        exit(1);
 }
 
+void
+readxresources(void) {
+       XrmInitialize();
+
+       char* xrm;
+       if ((xrm = XResourceManagerString(drw->dpy))) {
+               char *type;
+               XrmDatabase xdb = XrmGetStringDatabase(xrm);
+               XrmValue xval;
+
+               if (XrmGetResource(xdb, "dmenu.font", "*", &type, &xval))
+                       fonts[0] = strdup(xval.addr);
+               else
+                       fonts[0] = strdup(fonts[0]);
+               if (XrmGetResource(xdb, "dmenu.background", "*", &type, &xval))
+                       colors[SchemeNorm][ColBg] = strdup(xval.addr);
+               else
+                       colors[SchemeNorm][ColBg] = strdup(colors[SchemeNorm][ColBg]);
+               if (XrmGetResource(xdb, "dmenu.foreground", "*", &type, &xval))
+                       colors[SchemeNorm][ColFg] = strdup(xval.addr);
+               else
+                       colors[SchemeNorm][ColFg] = strdup(colors[SchemeNorm][ColFg]);
+               if (XrmGetResource(xdb, "dmenu.selbackground", "*", &type, &xval))
+                       colors[SchemeSel][ColBg] = strdup(xval.addr);
+               else
+                       colors[SchemeSel][ColBg] = strdup(colors[SchemeSel][ColBg]);
+               if (XrmGetResource(xdb, "dmenu.selforeground", "*", &type, &xval))
+                       colors[SchemeSel][ColFg] = strdup(xval.addr);
+               else
+                       colors[SchemeSel][ColFg] = strdup(colors[SchemeSel][ColFg]);
+
+               XrmDestroyDatabase(xdb);
+       }
+}
+
 int
 main(int argc, char *argv[])
 {
@@ -693,10 +793,14 @@ main(int argc, char *argv[])
                        topbar = 0;
                else if (!strcmp(argv[i], "-f"))   /* grabs keyboard before reading stdin */
                        fast = 1;
+               else if (!strcmp(argv[i], "-c"))   /* centers dmenu on screen */
+                       centered = 1;
                else if (!strcmp(argv[i], "-i")) { /* case-insensitive item matching */
                        fstrncmp = strncasecmp;
                        fstrstr = cistrstr;
-               } else if (i + 1 == argc)
+               } else if (!strcmp(argv[i], "-r")) /* reject input which results in no match */
+                       reject_no_match = 1;
+               else if (i + 1 == argc)
                        usage();
                /* these options take one argument */
                else if (!strcmp(argv[i], "-l"))   /* number of lines in vertical list */
@@ -706,15 +810,15 @@ main(int argc, char *argv[])
                else if (!strcmp(argv[i], "-p"))   /* adds prompt to left of input field */
                        prompt = argv[++i];
                else if (!strcmp(argv[i], "-fn"))  /* font or font set */
-                       fonts[0] = argv[++i];
+                       tempfonts = argv[++i];
                else if (!strcmp(argv[i], "-nb"))  /* normal background color */
-                       colors[SchemeNorm][ColBg] = argv[++i];
+                       colortemp[0] = argv[++i];
                else if (!strcmp(argv[i], "-nf"))  /* normal foreground color */
-                       colors[SchemeNorm][ColFg] = argv[++i];
+                       colortemp[1] = argv[++i];
                else if (!strcmp(argv[i], "-sb"))  /* selected background color */
-                       colors[SchemeSel][ColBg] = argv[++i];
+                       colortemp[2] = argv[++i];
                else if (!strcmp(argv[i], "-sf"))  /* selected foreground color */
-                       colors[SchemeSel][ColFg] = argv[++i];
+                       colortemp[3] = argv[++i];
                else if (!strcmp(argv[i], "-w"))   /* embedding window id */
                        embed = argv[++i];
                else
@@ -732,11 +836,31 @@ main(int argc, char *argv[])
                die("could not get embedding window attributes: 0x%lx",
                    parentwin);
        drw = drw_create(dpy, screen, root, wa.width, wa.height);
-       if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
+       readxresources();
+       /* Now we check whether to override xresources with commandline parameters */
+       if ( tempfonts )
+          fonts[0] = strdup(tempfonts);
+       if ( colortemp[0])
+          colors[SchemeNorm][ColBg] = strdup(colortemp[0]);
+       if ( colortemp[1])
+          colors[SchemeNorm][ColFg] = strdup(colortemp[1]);
+       if ( colortemp[2])
+          colors[SchemeSel][ColBg]  = strdup(colortemp[2]);
+       if ( colortemp[3])
+          colors[SchemeSel][ColFg]  = strdup(colortemp[3]);
+
+       if (!drw_fontset_create(drw, (const char**)fonts, LENGTH(fonts)))
                die("no fonts could be loaded.");
+
+       free(fonts[0]);
        lrpad = drw->fonts->h;
 
-       if (fast) {
+#ifdef __OpenBSD__
+       if (pledge("stdio rpath", NULL) == -1)
+               die("pledge");
+#endif
+
+       if (fast && !isatty(0)) {
                grabkeyboard();
                readstdin();
        } else {