Xinqi Bao's Git

patch: mousesupport
[dmenu.git] / dmenu.c
diff --git a/dmenu.c b/dmenu.c
index 7745947..fb92462 100644 (file)
--- a/dmenu.c
+++ b/dmenu.c
@@ -1,14 +1,17 @@
 /* See LICENSE file for copyright and license details. */
 #include <ctype.h>
 #include <locale.h>
+#include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <strings.h>
 #include <time.h>
+#include <unistd.h>
 
 #include <X11/Xlib.h>
 #include <X11/Xatom.h>
+#include <X11/Xproto.h>
 #include <X11/Xutil.h>
 #ifdef XINERAMA
 #include <X11/extensions/Xinerama.h>
 #define LENGTH(X)             (sizeof X / sizeof X[0])
 #define TEXTW(X)              (drw_fontset_getwidth(drw, (X)) + lrpad)
 
-#ifdef __OpenBSD__
-#include <unistd.h>
-#else
-#define pledge(a,b) 0
-#endif
+#define OPAQUE                0xffU
 
 /* enums */
 enum { SchemeNorm, SchemeSel, SchemeOut, SchemeLast }; /* color schemes */
@@ -37,6 +36,7 @@ struct item {
        char *text;
        struct item *left, *right;
        int out;
+       double distance;
 };
 
 static char text[BUFSIZ] = "";
@@ -58,10 +58,23 @@ static XIC xic;
 static Drw *drw;
 static Clr *scheme[SchemeLast];
 
+static int useargb = 0;
+static Visual *visual;
+static int depth;
+static Colormap cmap;
+
 #include "config.h"
 
 static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
 static char *(*fstrstr)(const char *, const char *) = strstr;
+static void xinitvisual();
+
+static unsigned int
+textw_clamp(const char *str, unsigned int n)
+{
+       unsigned int w = drw_fontset_getwidth_clamp(drw, str, n) + lrpad;
+       return MIN(w, n);
+}
 
 static void
 appenditem(struct item *item, struct item **list, struct item **last)
@@ -87,13 +100,22 @@ calcoffsets(void)
                n = mw - (promptw + inputw + TEXTW("<") + TEXTW(">"));
        /* calculate which items will begin the next page and previous page */
        for (i = 0, next = curr; next; next = next->right)
-               if ((i += (lines > 0) ? bh : MIN(TEXTW(next->text), n)) > n)
+               if ((i += (lines > 0) ? bh : textw_clamp(next->text, n)) > n)
                        break;
        for (i = 0, prev = curr; prev && prev->left; prev = prev->left)
-               if ((i += (lines > 0) ? bh : MIN(TEXTW(prev->left->text), n)) > n)
+               if ((i += (lines > 0) ? bh : textw_clamp(prev->left->text, n)) > n)
                        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)
 {
@@ -102,19 +124,29 @@ cleanup(void)
        XUngrabKey(dpy, AnyKey, AnyModifier, root);
        for (i = 0; i < SchemeLast; i++)
                free(scheme[i]);
+       for (i = 0; items && items[i].text; ++i)
+               free(items[i].text);
+       free(items);
        drw_free(drw);
        XSync(dpy, False);
        XCloseDisplay(dpy);
 }
 
 static char *
-cistrstr(const char *s, const char *sub)
+cistrstr(const char *h, const char *n)
 {
-       size_t len;
+       size_t i;
 
-       for (len = strlen(sub); *s; s++)
-               if (!strncasecmp(s, sub, len))
-                       return (char *)s;
+       if (!n[0])
+               return (char *)h;
+
+       for (; *h; ++h) {
+               for (i = 0; n[i] && tolower((unsigned char)n[i]) ==
+                           tolower((unsigned char)h[i]); ++i)
+                       ;
+               if (n[i] == '\0')
+                       return (char *)h;
+       }
        return NULL;
 }
 
@@ -170,7 +202,7 @@ drawmenu(void)
                }
                x += w;
                for (item = curr; item != next; item = item->right)
-                       x = drawitem(item, x, 0, MIN(TEXTW(item->text), mw - x - TEXTW(">")));
+                       x = drawitem(item, x, 0, textw_clamp(item->text, mw - x - TEXTW(">")));
                if (next) {
                        w = TEXTW(">");
                        drw_setscheme(drw, scheme[SchemeNorm]);
@@ -215,9 +247,94 @@ grabkeyboard(void)
        die("cannot grab keyboard");
 }
 
+int
+compare_distance(const void *a, const void *b)
+{
+       struct item *da = *(struct item **) a;
+       struct item *db = *(struct item **) b;
+
+       if (!db)
+               return 1;
+       if (!da)
+               return -1;
+
+       return da->distance == db->distance ? 0 : da->distance < db->distance ? -1 : 1;
+}
+
+void
+fuzzymatch(void)
+{
+       /* bang - we have so much memory */
+       struct item *it;
+       struct item **fuzzymatches = NULL;
+       char c;
+       int number_of_matches = 0, i, pidx, sidx, eidx;
+       int text_len = strlen(text), itext_len;
+
+       matches = matchend = NULL;
+
+       /* walk through all items */
+       for (it = items; it && it->text; it++) {
+               if (text_len) {
+                       itext_len = strlen(it->text);
+                       pidx = 0; /* pointer */
+                       sidx = eidx = -1; /* start of match, end of match */
+                       /* walk through item text */
+                       for (i = 0; i < itext_len && (c = it->text[i]); i++) {
+                               /* fuzzy match pattern */
+                               if (!fstrncmp(&text[pidx], &c, 1)) {
+                                       if(sidx == -1)
+                                               sidx = i;
+                                       pidx++;
+                                       if (pidx == text_len) {
+                                               eidx = i;
+                                               break;
+                                       }
+                               }
+                       }
+                       /* build list of matches */
+                       if (eidx != -1) {
+                               /* compute distance */
+                               /* add penalty if match starts late (log(sidx+2))
+                                * add penalty for long a match without many matching characters */
+                               it->distance = log(sidx + 2) + (double)(eidx - sidx - text_len);
+                               /* fprintf(stderr, "distance %s %f\n", it->text, it->distance); */
+                               appenditem(it, &matches, &matchend);
+                               number_of_matches++;
+                       }
+               } else {
+                       appenditem(it, &matches, &matchend);
+               }
+       }
+
+       if (number_of_matches) {
+               /* initialize array with matches */
+               if (!(fuzzymatches = realloc(fuzzymatches, number_of_matches * sizeof(struct item*))))
+                       die("cannot realloc %u bytes:", number_of_matches * sizeof(struct item*));
+               for (i = 0, it = matches; it && i < number_of_matches; i++, it = it->right) {
+                       fuzzymatches[i] = it;
+               }
+               /* sort matches according to distance */
+               qsort(fuzzymatches, number_of_matches, sizeof(struct item*), compare_distance);
+               /* rebuild list of matches */
+               matches = matchend = NULL;
+               for (i = 0, it = fuzzymatches[i];  i < number_of_matches && it && \
+                               it->text; i++, it = fuzzymatches[i]) {
+                       appenditem(it, &matches, &matchend);
+               }
+               free(fuzzymatches);
+       }
+       curr = sel = matches;
+       calcoffsets();
+}
+
 static void
 match(void)
 {
+       if (fuzzy) {
+               fuzzymatch();
+               return;
+       }
        static char **tokv = NULL;
        static int tokn = 0;
 
@@ -230,7 +347,7 @@ match(void)
        /* separate input text into tokens to be matched individually */
        for (s = strtok(buf, " "); s; tokv[tokc - 1] = s, s = strtok(NULL, " "))
                if (++tokc > tokn && !(tokv = realloc(tokv, ++tokn * sizeof *tokv)))
-                       die("cannot realloc %u bytes:", tokn * sizeof *tokv);
+                       die("cannot realloc %zu bytes:", tokn * sizeof *tokv);
        len = tokc ? strlen(tokv[0]) : 0;
 
        matches = lprefix = lsubstr = matchend = prefixend = substrend = NULL;
@@ -365,9 +482,11 @@ keypress(XKeyEvent *ev)
                                          utf8, utf8, win, CurrentTime);
                        return;
                case XK_Left:
+               case XK_KP_Left:
                        movewordedge(-1);
                        goto draw;
                case XK_Right:
+               case XK_KP_Right:
                        movewordedge(+1);
                        goto draw;
                case XK_Return:
@@ -401,10 +520,11 @@ keypress(XKeyEvent *ev)
        switch(ksym) {
        default:
 insert:
-               if (!iscntrl(*buf))
+               if (!iscntrl((unsigned char)*buf))
                        insert(buf, len);
                break;
        case XK_Delete:
+       case XK_KP_Delete:
                if (text[cursor] == '\0')
                        return;
                cursor = nextrune(+1);
@@ -415,6 +535,7 @@ insert:
                insert(NULL, nextrune(-1) - cursor);
                break;
        case XK_End:
+       case XK_KP_End:
                if (text[cursor] != '\0') {
                        cursor = strlen(text);
                        break;
@@ -434,6 +555,7 @@ insert:
                cleanup();
                exit(1);
        case XK_Home:
+       case XK_KP_Home:
                if (sel == matches) {
                        cursor = 0;
                        break;
@@ -442,6 +564,7 @@ insert:
                calcoffsets();
                break;
        case XK_Left:
+       case XK_KP_Left:
                if (cursor > 0 && (!sel || !sel->left || lines > 0)) {
                        cursor = nextrune(-1);
                        break;
@@ -450,18 +573,21 @@ insert:
                        return;
                /* fallthrough */
        case XK_Up:
+       case XK_KP_Up:
                if (sel && sel->left && (sel = sel->left)->right == curr) {
                        curr = prev;
                        calcoffsets();
                }
                break;
        case XK_Next:
+       case XK_KP_Next:
                if (!next)
                        return;
                sel = curr = next;
                calcoffsets();
                break;
        case XK_Prior:
+       case XK_KP_Prior:
                if (!prev)
                        return;
                sel = curr = prev;
@@ -478,6 +604,7 @@ insert:
                        sel->out = 1;
                break;
        case XK_Right:
+       case XK_KP_Right:
                if (text[cursor] != '\0') {
                        cursor = nextrune(+1);
                        break;
@@ -486,6 +613,7 @@ insert:
                        return;
                /* fallthrough */
        case XK_Down:
+       case XK_KP_Down:
                if (sel && sel->right && (sel = sel->right) == next) {
                        curr = next;
                        calcoffsets();
@@ -505,6 +633,119 @@ draw:
        drawmenu();
 }
 
+static void
+buttonpress(XEvent *e)
+{
+       struct item *item;
+       XButtonPressedEvent *ev = &e->xbutton;
+       int x = 0, y = 0, h = bh, w;
+
+       if (ev->window != win)
+               return;
+
+       /* right-click: exit */
+       if (ev->button == Button3)
+               exit(1);
+
+       if (prompt && *prompt)
+               x += promptw;
+
+       /* input field */
+       w = (lines > 0 || !matches) ? mw - x : inputw;
+
+       /* left-click on input: clear input,
+        * NOTE: if there is no left-arrow the space for < is reserved so
+        *       add that to the input width */
+       if (ev->button == Button1 &&
+          ((lines <= 0 && ev->x >= 0 && ev->x <= x + w +
+          ((!prev || !curr->left) ? TEXTW("<") : 0)) ||
+          (lines > 0 && ev->y >= y && ev->y <= y + h))) {
+               insert(NULL, -cursor);
+               drawmenu();
+               return;
+       }
+       /* middle-mouse click: paste selection */
+       if (ev->button == Button2) {
+               XConvertSelection(dpy, (ev->state & ShiftMask) ? clip : XA_PRIMARY,
+                                 utf8, utf8, win, CurrentTime);
+               drawmenu();
+               return;
+       }
+       /* scroll up */
+       if (ev->button == Button4 && prev) {
+               sel = curr = prev;
+               calcoffsets();
+               drawmenu();
+               return;
+       }
+       /* scroll down */
+       if (ev->button == Button5 && next) {
+               sel = curr = next;
+               calcoffsets();
+               drawmenu();
+               return;
+       }
+       if (ev->button != Button1)
+               return;
+       if (ev->state & ~ControlMask)
+               return;
+       if (lines > 0) {
+               /* vertical list: (ctrl)left-click on item */
+               w = mw - x;
+               for (item = curr; item != next; item = item->right) {
+                       y += h;
+                       if (ev->y >= y && ev->y <= (y + h)) {
+                               puts(item->text);
+                               if (!(ev->state & ControlMask))
+                                       exit(0);
+                               sel = item;
+                               if (sel) {
+                                       sel->out = 1;
+                                       drawmenu();
+                               }
+                               return;
+                       }
+               }
+       } else if (matches) {
+               /* left-click on left arrow */
+               x += inputw;
+               w = TEXTW("<");
+               if (prev && curr->left) {
+                       if (ev->x >= x && ev->x <= x + w) {
+                               sel = curr = prev;
+                               calcoffsets();
+                               drawmenu();
+                               return;
+                       }
+               }
+               /* horizontal list: (ctrl)left-click on item */
+               for (item = curr; item != next; item = item->right) {
+                       x += w;
+                       w = MIN(TEXTW(item->text), mw - x - TEXTW(">"));
+                       if (ev->x >= x && ev->x <= x + w) {
+                               puts(item->text);
+                               if (!(ev->state & ControlMask))
+                                       exit(0);
+                               sel = item;
+                               if (sel) {
+                                       sel->out = 1;
+                                       drawmenu();
+                               }
+                               return;
+                       }
+               }
+               /* left-click on right arrow */
+               w = TEXTW(">");
+               x = mw - w;
+               if (next && ev->x >= x && ev->x <= x + w) {
+                       sel = curr = next;
+                       calcoffsets();
+                       drawmenu();
+                       return;
+               }
+       }
+}
+
 static void
 paste(void)
 {
@@ -527,28 +768,21 @@ static void
 readstdin(void)
 {
        char buf[sizeof text], *p;
-       size_t i, imax = 0, size = 0;
-       unsigned int tmpmax = 0;
+       size_t i, size = 0;
 
        /* read each line from stdin and add it to the item list */
        for (i = 0; fgets(buf, sizeof buf, stdin); i++) {
                if (i + 1 >= size / sizeof *items)
                        if (!(items = realloc(items, (size += BUFSIZ))))
-                               die("cannot realloc %u bytes:", size);
+                               die("cannot realloc %zu bytes:", size);
                if ((p = strchr(buf, '\n')))
                        *p = '\0';
                if (!(items[i].text = strdup(buf)))
-                       die("cannot strdup %u bytes:", strlen(buf) + 1);
+                       die("cannot strdup %zu bytes:", strlen(buf) + 1);
                items[i].out = 0;
-               drw_font_getexts(drw->fonts, buf, strlen(buf), &tmpmax, NULL);
-               if (tmpmax > inputw) {
-                       inputw = tmpmax;
-                       imax = i;
-               }
        }
        if (items)
                items[i].text = NULL;
-       inputw = items ? TEXTW(items[imax].text) : 0;
        lines = MIN(lines, i);
 }
 
@@ -558,9 +792,17 @@ run(void)
        XEvent ev;
 
        while (!XNextEvent(dpy, &ev)) {
-               if (XFilterEvent(&ev, None))
+               if (XFilterEvent(&ev, win))
                        continue;
                switch(ev.type) {
+               case DestroyNotify:
+                       if (ev.xdestroywindow.window != win)
+                               break;
+                       cleanup();
+                       exit(1);
+               case ButtonPress:
+                       buttonpress(&ev);
+                       break;
                case Expose:
                        if (ev.xexpose.count == 0)
                                drw_map(drw, win, 0, 0, mw, mh);
@@ -589,12 +831,13 @@ static void
 setup(void)
 {
        int x, y, i, j;
-       unsigned int du;
+       unsigned int du, tmp;
        XSetWindowAttributes swa;
        XIM xim;
        Window w, dw, *dws;
        XWindowAttributes wa;
        XClassHint ch = {"dmenu", "dmenu"};
+       struct item *item;
 #ifdef XINERAMA
        XineramaScreenInfo *info;
        Window pw;
@@ -602,7 +845,7 @@ setup(void)
 #endif
        /* init appearance */
        for (j = 0; j < SchemeLast; j++)
-               scheme[j] = drw_scm_create(drw, colors[j], 2);
+               scheme[j] = drw_scm_create(drw, colors[j], alphas[j], 2);
 
        clip = XInternAtom(dpy, "CLIPBOARD",   False);
        utf8 = XInternAtom(dpy, "UTF8_STRING", False);
@@ -611,6 +854,7 @@ 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))) {
@@ -634,12 +878,19 @@ setup(void)
                /* no focused window is on screen, so use pointer location instead */
                if (mon < 0 && !area && XQueryPointer(dpy, root, &dw, &dw, &x, &y, &di, &di, &du))
                        for (i = 0; i < n; i++)
-                               if (INTERSECT(x, y, 1, 1, info[i]))
+                               if (INTERSECT(x, y, 1, 1, info[i]) != 0)
                                        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
@@ -647,32 +898,47 @@ 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;
+               }
+       }
+       for (item = items; item && item->text; ++item) {
+               if ((tmp = textw_clamp(item->text, mw/3)) > inputw) {
+                       if ((inputw = tmp) == mw/3)
+                               break;
+               }
        }
-       promptw = (prompt && *prompt) ? TEXTW(prompt) - lrpad / 4 : 0;
-       inputw = MIN(inputw, mw/3);
        match();
 
        /* create menu window */
        swa.override_redirect = True;
-       swa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
-       swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask;
+       swa.background_pixel = 0;
+       swa.border_pixel = 0;
+       swa.colormap = cmap;
+       swa.event_mask = ExposureMask | KeyPressMask | VisibilityChangeMask | ButtonPressMask;
        win = XCreateWindow(dpy, parentwin, x, y, mw, mh, 0,
-                           CopyFromParent, CopyFromParent, CopyFromParent,
-                           CWOverrideRedirect | CWBackPixel | CWEventMask, &swa);
+                           depth, CopyFromParent, visual,
+                           CWOverrideRedirect | CWBackPixel | CWBorderPixel | CWColormap | CWEventMask, &swa);
        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);
-       XSetInputFocus(dpy, win, RevertToParent, CurrentTime);
        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);
@@ -707,6 +973,10 @@ 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], "-F"))   /* grabs keyboard before reading stdin */
+                       /* always fuzzy */; // fuzzy = 0;
+               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;
@@ -736,8 +1006,6 @@ main(int argc, char *argv[])
 
        if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
                fputs("warning: no locale support\n", stderr);
-       if (!XSetLocaleModifiers(""))
-               fputs("warning: no locale modifiers support\n", stderr);
        if (!(dpy = XOpenDisplay(NULL)))
                die("cannot open display");
        screen = DefaultScreen(dpy);
@@ -747,15 +1015,18 @@ main(int argc, char *argv[])
        if (!XGetWindowAttributes(dpy, parentwin, &wa))
                die("could not get embedding window attributes: 0x%lx",
                    parentwin);
-       drw = drw_create(dpy, screen, root, wa.width, wa.height);
+       xinitvisual();
+       drw = drw_create(dpy, screen, root, wa.width, wa.height, visual, depth, cmap);
        if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
                die("no fonts could be loaded.");
        lrpad = drw->fonts->h;
 
-       if (pledge("stdio rpath", NULL) < 0)
+#ifdef __OpenBSD__
+       if (pledge("stdio rpath", NULL) == -1)
                die("pledge");
+#endif
 
-       if (fast) {
+       if (fast && !isatty(0)) {
                grabkeyboard();
                readstdin();
        } else {
@@ -767,3 +1038,40 @@ main(int argc, char *argv[])
 
        return 1; /* unreachable */
 }
+
+ void
+xinitvisual()
+{
+       XVisualInfo *infos;
+       XRenderPictFormat *fmt;
+       int nitems;
+       int i;
+
+       XVisualInfo tpl = {
+               .screen = screen,
+               .depth = 32,
+               .class = TrueColor
+       };
+       long masks = VisualScreenMask | VisualDepthMask | VisualClassMask;
+
+       infos = XGetVisualInfo(dpy, masks, &tpl, &nitems);
+       visual = NULL;
+       for(i = 0; i < nitems; i ++) {
+               fmt = XRenderFindVisualFormat(dpy, infos[i].visual);
+               if (fmt->type == PictTypeDirect && fmt->direct.alphaMask) {
+                       visual = infos[i].visual;
+                       depth = infos[i].depth;
+                       cmap = XCreateColormap(dpy, root, visual, AllocNone);
+                       useargb = 1;
+                       break;
+               }
+       }
+
+       XFree(infos);
+
+       if (! visual) {
+               visual = DefaultVisual(dpy, screen);
+               depth = DefaultDepth(dpy, screen);
+               cmap = DefaultColormap(dpy, screen);
+       }
+}