591 lines
12 KiB
C
591 lines
12 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <ctype.h>
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#include <locale.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <unistd.h>
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#include <X11/keysym.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#ifdef XINERAMA
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#include <X11/extensions/Xinerama.h>
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#endif
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/* macros */
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#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
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#define INRECT(X,Y,RX,RY,RW,RH) ((X) >= (RX) && (X) < (RX) + (RW) && (Y) >= (RY) && (Y) < (RY) + (RH))
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#define IS_UTF8_1ST_CHAR(c) ((((c) & 0xc0) == 0xc0) || !((c) & 0x80))
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typedef struct Item Item;
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struct Item {
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char *text;
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Item *next; /* traverses all items */
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Item *left, *right; /* traverses items matching current search pattern */
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};
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/* forward declarations */
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static void appenditem(Item *i, Item **list, Item **last);
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static void calcoffsetsh(void);
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static void calcoffsetsv(void);
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static char *cistrstr(const char *s, const char *sub);
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static void cleanup(void);
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static void drawmenu(void);
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static void drawmenuh(void);
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static void drawmenuv(void);
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static void eprint(const char *errstr, ...);
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static Bool grabkeyboard(void);
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static void kpress(XKeyEvent * e);
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static void match(char *pattern);
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static void readstdin(void);
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static void run(void);
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static void setup(Bool topbar);
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#include "config.h"
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#include "draw.h"
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/* variables */
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static char *maxname = NULL;
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static char *prompt = NULL;
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static char text[4096];
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static int cmdw = 0;
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static int promptw = 0;
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static int ret = 0;
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static unsigned int numlockmask = 0;
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static Bool running = True;
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static Item *allitems = NULL; /* first of all items */
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static Item *item = NULL; /* first of pattern matching items */
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static Item *sel = NULL;
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static Item *next = NULL;
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static Item *prev = NULL;
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static Item *curr = NULL;
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static Window win;
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static int (*fstrncmp)(const char *, const char *, size_t) = strncmp;
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static char *(*fstrstr)(const char *, const char *) = strstr;
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static unsigned int lines = 0;
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static void (*calcoffsets)(void) = calcoffsetsh;
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void
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appenditem(Item *i, Item **list, Item **last) {
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if(!(*last))
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*list = i;
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else
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(*last)->right = i;
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i->left = *last;
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i->right = NULL;
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*last = i;
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}
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void
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calcoffsetsh(void) {
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unsigned int w;
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if(!curr)
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return;
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w = promptw + cmdw + 2 * spaceitem;
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for(next = curr; next && w < mw; next=next->right)
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w += MIN(textw(next->text), mw / 3);
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w = promptw + cmdw + 2 * spaceitem;
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for(prev = curr; prev && prev->left && w < mw; prev=prev->left)
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w += MIN(textw(prev->left->text), mw / 3);
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}
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void
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calcoffsetsv(void) {
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unsigned int h;
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if(!curr)
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return;
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h = (dc.font.height + 2) * lines;
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for(next = curr; next && h > 0; next = next->right)
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h -= dc.font.height + 2;
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h = (dc.font.height + 2) * lines;
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for(prev = curr; prev && prev->left && h > 0; prev = prev->left)
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h -= dc.font.height + 2;
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}
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char *
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cistrstr(const char *s, const char *sub) {
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int c, csub;
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unsigned int len;
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if(!sub)
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return (char *)s;
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if((c = tolower(*sub++)) != '\0') {
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len = strlen(sub);
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do {
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do {
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if((csub = *s++) == '\0')
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return NULL;
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}
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while(tolower(csub) != c);
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}
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while(strncasecmp(s, sub, len) != 0);
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s--;
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}
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return (char *)s;
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}
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void
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cleanup(void) {
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drawcleanup();
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XDestroyWindow(dpy, win);
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XUngrabKeyboard(dpy, CurrentTime);
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}
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void
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drawmenu(void) {
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dc.x = 0;
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dc.y = 0;
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dc.w = mw;
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dc.h = mh;
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drawtext(NULL, dc.norm);
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/* print prompt? */
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if(prompt) {
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dc.w = promptw;
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drawtext(prompt, dc.sel);
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dc.x += dc.w;
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}
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dc.w = mw - dc.x;
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/* print command */
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if(cmdw && item && lines == 0)
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dc.w = cmdw;
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drawtext(*text ? text : NULL, dc.norm);
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if(curr) {
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if(lines > 0)
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drawmenuv();
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else
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drawmenuh();
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}
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XCopyArea(dpy, dc.drawable, win, dc.gc, 0, 0, mw, mh, 0, 0);
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XFlush(dpy);
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}
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void
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drawmenuh(void) {
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Item *i;
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dc.x += cmdw;
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dc.w = spaceitem;
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drawtext(curr->left ? "<" : NULL, dc.norm);
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dc.x += dc.w;
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for(i = curr; i != next; i=i->right) {
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dc.w = MIN(textw(i->text), mw / 3);
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drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
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dc.x += dc.w;
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}
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dc.w = spaceitem;
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dc.x = mw - dc.w;
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drawtext(next ? ">" : NULL, dc.norm);
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}
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void
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drawmenuv(void) {
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Item *i;
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dc.w = mw - dc.x;
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dc.h = dc.font.height + 2;
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dc.y = dc.h;
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for(i = curr; i != next; i=i->right) {
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drawtext(i->text, (sel == i) ? dc.sel : dc.norm);
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dc.y += dc.h;
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}
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dc.h = mh - dc.y;
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drawtext(NULL, dc.norm);
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}
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Bool
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grabkeyboard(void) {
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unsigned int len;
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for(len = 1000; len; len--) {
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if(XGrabKeyboard(dpy, parent, True, GrabModeAsync, GrabModeAsync, CurrentTime)
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== GrabSuccess)
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break;
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usleep(1000);
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}
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return len > 0;
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}
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void
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kpress(XKeyEvent * e) {
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char buf[sizeof text];
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int num;
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unsigned int i, len;
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KeySym ksym;
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len = strlen(text);
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num = XLookupString(e, buf, sizeof buf, &ksym, NULL);
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if(ksym == XK_KP_Enter)
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ksym = XK_Return;
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else if(ksym >= XK_KP_0 && ksym <= XK_KP_9)
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ksym = (ksym - XK_KP_0) + XK_0;
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else if(IsFunctionKey(ksym) || IsKeypadKey(ksym)
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|| IsMiscFunctionKey(ksym) || IsPFKey(ksym)
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|| IsPrivateKeypadKey(ksym))
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return;
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/* first check if a control mask is omitted */
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if(e->state & ControlMask) {
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switch(tolower(ksym)) {
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default:
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return;
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case XK_a:
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ksym = XK_Home;
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break;
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case XK_b:
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ksym = XK_Left;
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break;
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case XK_c:
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ksym = XK_Escape;
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break;
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case XK_e:
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ksym = XK_End;
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break;
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case XK_f:
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ksym = XK_Right;
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break;
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case XK_h:
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ksym = XK_BackSpace;
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break;
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case XK_i:
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ksym = XK_Tab;
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break;
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case XK_j:
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ksym = XK_Return;
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break;
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case XK_n:
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ksym = XK_Down;
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break;
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case XK_p:
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ksym = XK_Up;
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break;
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case XK_u:
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text[0] = '\0';
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match(text);
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break;
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case XK_w:
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if(len == 0)
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return;
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i = len;
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while(i-- > 0 && text[i] == ' ');
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while(i-- > 0 && text[i] != ' ');
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text[++i] = '\0';
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match(text);
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break;
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case XK_x:
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execlp("dinput", "dinput", text, NULL); /* todo: argv */
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eprint("dmenu: cannot exec dinput:");
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break;
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}
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}
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switch(ksym) {
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default:
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num = MIN(num, sizeof text);
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if(num && !iscntrl((int) buf[0])) {
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memcpy(text + len, buf, num + 1);
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len += num;
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match(text);
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}
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break;
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case XK_BackSpace:
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if(len == 0)
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return;
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for(i = 1; len - i > 0 && !IS_UTF8_1ST_CHAR(text[len - i]); i++);
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len -= i;
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text[len] = '\0';
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match(text);
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break;
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case XK_End:
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while(next) {
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sel = curr = next;
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calcoffsets();
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}
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while(sel && sel->right)
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sel = sel->right;
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break;
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case XK_Escape:
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ret = 1;
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running = False;
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return;
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case XK_Home:
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sel = curr = item;
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calcoffsets();
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break;
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case XK_Left:
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case XK_Up:
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if(!sel || !sel->left)
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return;
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sel = sel->left;
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if(sel->right == curr) {
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curr = prev;
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calcoffsets();
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}
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break;
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case XK_Next:
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if(!next)
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return;
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sel = curr = next;
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calcoffsets();
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break;
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case XK_Prior:
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if(!prev)
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return;
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sel = curr = prev;
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calcoffsets();
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break;
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case XK_Return:
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if((e->state & ShiftMask) || !sel)
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fprintf(stdout, "%s", text);
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else
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fprintf(stdout, "%s", sel->text);
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fflush(stdout);
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running = False;
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return;
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case XK_Right:
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case XK_Down:
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if(!sel || !sel->right)
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return;
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sel = sel->right;
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if(sel == next) {
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curr = next;
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calcoffsets();
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}
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break;
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case XK_Tab:
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if(!sel)
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return;
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strncpy(text, sel->text, sizeof text);
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match(text);
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break;
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}
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drawmenu();
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}
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void
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match(char *pattern) {
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unsigned int plen;
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Item *i, *itemend, *lexact, *lprefix, *lsubstr, *exactend, *prefixend, *substrend;
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if(!pattern)
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return;
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plen = strlen(pattern);
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item = lexact = lprefix = lsubstr = itemend = exactend = prefixend = substrend = NULL;
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for(i = allitems; i; i = i->next)
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if(!fstrncmp(pattern, i->text, plen + 1))
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appenditem(i, &lexact, &exactend);
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else if(!fstrncmp(pattern, i->text, plen))
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appenditem(i, &lprefix, &prefixend);
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else if(fstrstr(i->text, pattern))
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appenditem(i, &lsubstr, &substrend);
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if(lexact) {
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item = lexact;
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itemend = exactend;
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}
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if(lprefix) {
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if(itemend) {
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itemend->right = lprefix;
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lprefix->left = itemend;
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}
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else
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item = lprefix;
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itemend = prefixend;
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}
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if(lsubstr) {
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if(itemend) {
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itemend->right = lsubstr;
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lsubstr->left = itemend;
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}
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else
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item = lsubstr;
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}
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curr = prev = next = sel = item;
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calcoffsets();
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}
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void
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readstdin(void) {
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char *p, buf[sizeof text];
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unsigned int len = 0, max = 0;
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Item *i, *new;
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i = NULL;
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while(fgets(buf, sizeof buf, stdin)) {
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len = strlen(buf);
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if(buf[len-1] == '\n')
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buf[--len] = '\0';
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if(!(p = strdup(buf)))
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eprint("dmenu: cannot strdup %u bytes\n", len);
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if((max = MAX(max, len)) == len)
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maxname = p;
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if(!(new = malloc(sizeof *new)))
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eprint("dmenu: cannot malloc %u bytes\n", sizeof *new);
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new->next = new->left = new->right = NULL;
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new->text = p;
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if(!i)
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allitems = new;
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else
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i->next = new;
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i = new;
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}
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}
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void
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run(void) {
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XEvent ev;
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/* main event loop */
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while(running && !XNextEvent(dpy, &ev))
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switch (ev.type) {
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case KeyPress:
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kpress(&ev.xkey);
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break;
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case Expose:
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if(ev.xexpose.count == 0)
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drawmenu();
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break;
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case VisibilityNotify:
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if (ev.xvisibility.state != VisibilityUnobscured)
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XRaiseWindow(dpy, win);
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break;
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}
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}
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void
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setup(Bool topbar) {
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int i, j, x, y;
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#if XINERAMA
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int n;
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XineramaScreenInfo *info = NULL;
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#endif
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XModifierKeymap *modmap;
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XSetWindowAttributes wa;
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XWindowAttributes pwa;
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/* init modifier map */
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modmap = XGetModifierMapping(dpy);
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for(i = 0; i < 8; i++)
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for(j = 0; j < modmap->max_keypermod; j++) {
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if(modmap->modifiermap[i * modmap->max_keypermod + j]
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== XKeysymToKeycode(dpy, XK_Num_Lock))
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numlockmask = (1 << i);
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}
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XFreeModifiermap(modmap);
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initfont(font);
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/* menu window */
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wa.override_redirect = True;
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wa.background_pixmap = ParentRelative;
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wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask | VisibilityChangeMask;
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/* menu window geometry */
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mh = (dc.font.height + 2) * (lines + 1);
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#if XINERAMA
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if(parent == RootWindow(dpy, screen) && XineramaIsActive(dpy) && (info = XineramaQueryScreens(dpy, &n))) {
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i = 0;
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if(n > 1) {
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int di;
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unsigned int dui;
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Window dummy;
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if(XQueryPointer(dpy, parent, &dummy, &dummy, &x, &y, &di, &di, &dui))
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for(i = 0; i < n; i++)
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if(INRECT(x, y, info[i].x_org, info[i].y_org, info[i].width, info[i].height))
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break;
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}
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x = info[i].x_org;
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y = topbar ? info[i].y_org : info[i].y_org + info[i].height - mh;
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mw = info[i].width;
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XFree(info);
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}
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else
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#endif
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{
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XGetWindowAttributes(dpy, parent, &pwa);
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x = 0;
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y = topbar ? 0 : pwa.height - mh;
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mw = pwa.width;
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}
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win = XCreateWindow(dpy, parent, x, y, mw, mh, 0,
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DefaultDepth(dpy, screen), CopyFromParent,
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DefaultVisual(dpy, screen),
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CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
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drawsetup();
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if(maxname)
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cmdw = MIN(textw(maxname), mw / 3);
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if(prompt)
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promptw = MIN(textw(prompt), mw / 5);
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text[0] = '\0';
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match(text);
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XMapRaised(dpy, win);
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}
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int
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main(int argc, char *argv[]) {
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unsigned int i;
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Bool topbar = True;
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/* command line args */
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for(i = 1; i < argc; i++)
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if(!strcmp(argv[i], "-i")) {
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fstrncmp = strncasecmp;
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fstrstr = cistrstr;
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}
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else if(!strcmp(argv[i], "-b"))
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topbar = False;
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else if(!strcmp(argv[i], "-e")) {
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if(++i < argc) parent = atoi(argv[i]);
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}
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|
else if(!strcmp(argv[i], "-l")) {
|
|
if(++i < argc) lines = atoi(argv[i]);
|
|
if(lines > 0)
|
|
calcoffsets = calcoffsetsv;
|
|
}
|
|
else if(!strcmp(argv[i], "-fn")) {
|
|
if(++i < argc) font = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-nb")) {
|
|
if(++i < argc) normbgcolor = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-nf")) {
|
|
if(++i < argc) normfgcolor = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-p")) {
|
|
if(++i < argc) prompt = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-sb")) {
|
|
if(++i < argc) selbgcolor = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-sf")) {
|
|
if(++i < argc) selfgcolor = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-v"))
|
|
eprint("dmenu-"VERSION", © 2006-2010 dmenu engineers, see LICENSE for details\n");
|
|
else
|
|
eprint("usage: dmenu [-i] [-b] [-e <xid>] [-l <lines>] [-fn <font>] [-nb <color>]\n"
|
|
" [-nf <color>] [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n");
|
|
if(!setlocale(LC_CTYPE, "") || !XSupportsLocale())
|
|
fprintf(stderr, "dmenu: warning: no locale support\n");
|
|
if(!(dpy = XOpenDisplay(NULL)))
|
|
eprint("dmenu: cannot open display\n");
|
|
screen = DefaultScreen(dpy);
|
|
if(!parent)
|
|
parent = RootWindow(dpy, screen);
|
|
|
|
readstdin();
|
|
running = grabkeyboard();
|
|
|
|
setup(topbar);
|
|
drawmenu();
|
|
XSync(dpy, False);
|
|
run();
|
|
cleanup();
|
|
XCloseDisplay(dpy);
|
|
return ret;
|
|
}
|