/* 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 <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/keysym.h>
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/* macros */
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#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))
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/* enums */
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enum { ColFG, ColBG, ColLast };
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/* typedefs */
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typedef struct {
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int x, y, w, h;
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unsigned long norm[ColLast];
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unsigned long sel[ColLast];
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Drawable drawable;
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GC gc;
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struct {
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XFontStruct *xfont;
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XFontSet set;
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int ascent;
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int descent;
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int height;
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} font;
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} DC; /* draw context */
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typedef struct Item Item;
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struct Item {
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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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char *text;
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Bool matched;
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};
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/* forward declarations */
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Item *appenditem(Item *i, Item *last);
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void calcoffsets(void);
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void cleanup(void);
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void drawmenu(void);
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void drawtext(const char *text, unsigned long col[ColLast]);
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void *emalloc(unsigned int size);
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void eprint(const char *errstr, ...);
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char *estrdup(const char *str);
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unsigned long getcolor(const char *colstr);
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Bool grabkeyboard(void);
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void initfont(const char *fontstr);
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void kpress(XKeyEvent * e);
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void match(char *pattern);
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void readstdin(void);
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void run(void);
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void setup(Bool bottom);
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int strcaseido(const char *text, const char *pattern);
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unsigned int textnw(const char *text, unsigned int len);
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unsigned int textw(const char *text);
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#include "config.h"
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/* variables */
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char *font = FONT;
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char *maxname = NULL;
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char *normbg = NORMBGCOLOR;
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char *normfg = NORMFGCOLOR;
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char *prompt = NULL;
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char *selbg = SELBGCOLOR;
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char *selfg = SELFGCOLOR;
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char text[4096];
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int screen;
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int ret = 0;
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unsigned int cmdw = 0;
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unsigned int mw, mh;
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unsigned int promptw = 0;
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unsigned int nitem = 0;
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unsigned int numlockmask = 0;
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Bool idomatch = False;
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Bool running = True;
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Display *dpy;
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DC dc = {0};
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Item *allitems = NULL; /* first of all items */
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Item *item = NULL; /* first of pattern matching items */
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Item *sel = NULL;
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Item *next = NULL;
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Item *prev = NULL;
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Item *curr = NULL;
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Window root, win;
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Item *
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appenditem(Item *i, Item *last) {
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if(!last)
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item = i;
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else
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last->right = i;
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i->matched = True;
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i->left = last;
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i->right = NULL;
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last = i;
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nitem++;
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return last;
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}
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void
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calcoffsets(void) {
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unsigned int tw, w;
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if(!curr)
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return;
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w = promptw + cmdw + 2 * SPACE;
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for(next = curr; next; next=next->right) {
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tw = textw(next->text);
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if(tw > mw / 3)
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tw = mw / 3;
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w += tw;
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if(w > mw)
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break;
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}
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w = promptw + cmdw + 2 * SPACE;
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for(prev = curr; prev && prev->left; prev=prev->left) {
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tw = textw(prev->left->text);
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if(tw > mw / 3)
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tw = mw / 3;
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w += tw;
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if(w > mw)
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break;
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}
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}
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void
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cleanup(void) {
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Item *itm;
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while(allitems) {
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itm = allitems->next;
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free(allitems->text);
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free(allitems);
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allitems = itm;
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}
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if(dc.font.set)
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XFreeFontSet(dpy, dc.font.set);
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else
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XFreeFont(dpy, dc.font.xfont);
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XFreePixmap(dpy, dc.drawable);
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XFreeGC(dpy, dc.gc);
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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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Item *i;
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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(promptw) {
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dc.w = promptw;
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drawtext(prompt, dc.sel);
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}
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dc.x += promptw;
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dc.w = mw - promptw;
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/* print command */
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if(cmdw && item)
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dc.w = cmdw;
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drawtext(text[0] ? text : NULL, dc.norm);
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dc.x += cmdw;
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if(curr) {
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dc.w = SPACE;
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drawtext((curr && curr->left) ? "<" : NULL, dc.norm);
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dc.x += dc.w;
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/* determine maximum items */
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for(i = curr; i != next; i=i->right) {
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dc.w = textw(i->text);
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if(dc.w > mw / 3)
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dc.w = 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.x = mw - SPACE;
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dc.w = SPACE;
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drawtext(next ? ">" : NULL, dc.norm);
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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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drawtext(const char *text, unsigned long col[ColLast]) {
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int x, y, w, h;
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static char buf[256];
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unsigned int len, olen;
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XRectangle r = { dc.x, dc.y, dc.w, dc.h };
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XSetForeground(dpy, dc.gc, col[ColBG]);
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XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
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if(!text)
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return;
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w = 0;
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olen = len = strlen(text);
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if(len >= sizeof buf)
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len = sizeof buf - 1;
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memcpy(buf, text, len);
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buf[len] = 0;
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h = dc.font.ascent + dc.font.descent;
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y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
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x = dc.x + (h / 2);
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/* shorten text if necessary */
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while(len && (w = textnw(buf, len)) > dc.w - h)
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buf[--len] = 0;
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if(len < olen) {
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if(len > 1)
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buf[len - 1] = '.';
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if(len > 2)
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buf[len - 2] = '.';
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if(len > 3)
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buf[len - 3] = '.';
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}
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if(w > dc.w)
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return; /* too long */
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XSetForeground(dpy, dc.gc, col[ColFG]);
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if(dc.font.set)
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XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
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else
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XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
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}
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void *
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emalloc(unsigned int size) {
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void *res = malloc(size);
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if(!res)
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eprint("fatal: could not malloc() %u bytes\n", size);
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return res;
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}
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void
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eprint(const char *errstr, ...) {
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va_list ap;
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va_start(ap, errstr);
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vfprintf(stderr, errstr, ap);
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va_end(ap);
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exit(EXIT_FAILURE);
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}
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char *
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estrdup(const char *str) {
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void *res = strdup(str);
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if(!res)
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eprint("fatal: could not malloc() %u bytes\n", strlen(str));
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return res;
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}
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unsigned long
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getcolor(const char *colstr) {
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Colormap cmap = DefaultColormap(dpy, screen);
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XColor color;
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if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
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eprint("error, cannot allocate color '%s'\n", colstr);
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return color.pixel;
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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, root, 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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initfont(const char *fontstr) {
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char *def, **missing;
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int i, n;
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if(!fontstr || fontstr[0] == '\0')
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eprint("error, cannot load font: '%s'\n", fontstr);
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missing = NULL;
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if(dc.font.set)
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XFreeFontSet(dpy, dc.font.set);
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dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
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if(missing)
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XFreeStringList(missing);
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if(dc.font.set) {
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XFontSetExtents *font_extents;
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XFontStruct **xfonts;
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char **font_names;
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dc.font.ascent = dc.font.descent = 0;
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font_extents = XExtentsOfFontSet(dc.font.set);
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n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
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for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
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if(dc.font.ascent < (*xfonts)->ascent)
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dc.font.ascent = (*xfonts)->ascent;
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if(dc.font.descent < (*xfonts)->descent)
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dc.font.descent = (*xfonts)->descent;
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xfonts++;
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}
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}
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else {
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if(dc.font.xfont)
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XFreeFont(dpy, dc.font.xfont);
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dc.font.xfont = NULL;
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if(!(dc.font.xfont = XLoadQueryFont(dpy, fontstr))
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&& !(dc.font.xfont = XLoadQueryFont(dpy, "fixed")))
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eprint("error, cannot load font: '%s'\n", fontstr);
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dc.font.ascent = dc.font.xfont->ascent;
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dc.font.descent = dc.font.xfont->descent;
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}
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dc.font.height = dc.font.ascent + dc.font.descent;
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}
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void
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kpress(XKeyEvent * e) {
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char buf[32];
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int i, num;
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unsigned int len;
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KeySym ksym;
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len = strlen(text);
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buf[0] = 0;
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num = XLookupString(e, buf, sizeof buf, &ksym, 0);
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if(IsKeypadKey(ksym)) {
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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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}
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}
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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 (ksym) {
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default: /* ignore other control sequences */
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return;
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case XK_bracketleft:
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ksym = XK_Escape;
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break;
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case XK_h:
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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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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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case XK_J:
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ksym = XK_Return;
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break;
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case XK_u:
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case XK_U:
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text[0] = 0;
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match(text);
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drawmenu();
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return;
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case XK_w:
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case XK_W:
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if(len) {
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i = len - 1;
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while(i >= 0 && text[i] == ' ')
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text[i--] = 0;
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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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drawmenu();
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}
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return;
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}
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}
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if(CLEANMASK(e->state) & Mod1Mask) {
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switch(ksym) {
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default: return;
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case XK_h:
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ksym = XK_Left;
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break;
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case XK_l:
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ksym = XK_Right;
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break;
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case XK_j:
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ksym = XK_Next;
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break;
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case XK_k:
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ksym = XK_Prior;
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break;
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case XK_g:
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ksym = XK_Home;
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break;
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case XK_G:
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ksym = XK_End;
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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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if(num && !iscntrl((int) buf[0])) {
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buf[num] = 0;
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if(len > 0)
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strncat(text, buf, sizeof text);
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else
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strncpy(text, buf, sizeof text);
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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) {
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text[--len] = 0;
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match(text);
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}
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break;
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case XK_End:
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if(!item)
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return;
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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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break;
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case XK_Home:
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if(!item)
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return;
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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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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) && text)
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fprintf(stdout, "%s", text);
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else if(sel)
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fprintf(stdout, "%s", sel->text);
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else if(text)
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fprintf(stdout, "%s", text);
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fflush(stdout);
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running = False;
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break;
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case XK_Right:
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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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|
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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, *j;
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if(!pattern)
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return;
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plen = strlen(pattern);
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item = j = NULL;
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nitem = 0;
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for(i = allitems; i; i=i->next)
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i->matched = False;
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for(i = allitems; i; i = i->next)
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if(!i->matched && !strncasecmp(pattern, i->text, plen))
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j = appenditem(i, j);
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for(i = allitems; i; i = i->next)
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if(!i->matched && strcasestr(i->text, pattern))
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j = appenditem(i, j);
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if(idomatch)
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for(i = allitems; i; i = i->next)
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if(!i->matched && strcaseido(i->text, pattern))
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j = appenditem(i, j);
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curr = prev = next = sel = item;
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calcoffsets();
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}
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|
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void
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readstdin(void) {
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char *p, buf[1024];
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unsigned int len = 0, max = 0;
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Item *i, *new;
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i = 0;
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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 - 1] = 0;
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p = estrdup(buf);
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if(max < len) {
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maxname = p;
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max = len;
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}
|
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new = emalloc(sizeof(Item));
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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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|
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void
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run(void) {
|
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XEvent ev;
|
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|
|
/* main event loop */
|
|
while(running && !XNextEvent(dpy, &ev))
|
|
switch (ev.type) {
|
|
default: /* ignore all crap */
|
|
break;
|
|
case KeyPress:
|
|
kpress(&ev.xkey);
|
|
break;
|
|
case Expose:
|
|
if(ev.xexpose.count == 0)
|
|
drawmenu();
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
setup(Bool bottom) {
|
|
unsigned int i, j;
|
|
XModifierKeymap *modmap;
|
|
XSetWindowAttributes wa;
|
|
|
|
/* 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.norm[ColBG] = getcolor(normbg);
|
|
dc.norm[ColFG] = getcolor(normfg);
|
|
dc.sel[ColBG] = getcolor(selbg);
|
|
dc.sel[ColFG] = getcolor(selfg);
|
|
initfont(font);
|
|
|
|
/* menu window */
|
|
wa.override_redirect = 1;
|
|
wa.background_pixmap = ParentRelative;
|
|
wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask;
|
|
mw = DisplayWidth(dpy, screen);
|
|
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);
|
|
|
|
/* 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);
|
|
}
|
|
|
|
int
|
|
strcaseido(const char *text, const char *pattern) {
|
|
for(; *text && *pattern; text++)
|
|
if (tolower(*text) == tolower(*pattern))
|
|
pattern++;
|
|
return !*pattern;
|
|
}
|
|
|
|
unsigned int
|
|
textnw(const char *text, unsigned int len) {
|
|
XRectangle r;
|
|
|
|
if(dc.font.set) {
|
|
XmbTextExtents(dc.font.set, text, len, NULL, &r);
|
|
return r.width;
|
|
}
|
|
return XTextWidth(dc.font.xfont, text, len);
|
|
}
|
|
|
|
unsigned int
|
|
textw(const char *text) {
|
|
return textnw(text, strlen(text)) + dc.font.height;
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[]) {
|
|
Bool bottom = False;
|
|
unsigned int i;
|
|
|
|
/* command line args */
|
|
for(i = 1; i < argc; i++)
|
|
if(!strcmp(argv[i], "-b")) {
|
|
bottom = True;
|
|
}
|
|
else if(!strcmp(argv[i], "-i"))
|
|
idomatch = True;
|
|
else if(!strcmp(argv[i], "-fn")) {
|
|
if(++i < argc) font = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-nb")) {
|
|
if(++i < argc) normbg = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-nf")) {
|
|
if(++i < argc) normfg = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-p")) {
|
|
if(++i < argc) prompt = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-sb")) {
|
|
if(++i < argc) selbg = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-sf")) {
|
|
if(++i < argc) selfg = argv[i];
|
|
}
|
|
else if(!strcmp(argv[i], "-v"))
|
|
eprint("dmenu-"VERSION", © 2006-2007 Anselm R. Garbe, Sander van Dijk, Michał Janeczek\n");
|
|
else
|
|
eprint("usage: dmenu [-b] [-i] [-fn <font>] [-nb <color>] [-nf <color>]\n"
|
|
" [-p <prompt>] [-sb <color>] [-sf <color>] [-v]\n");
|
|
setlocale(LC_CTYPE, "");
|
|
dpy = XOpenDisplay(0);
|
|
if(!dpy)
|
|
eprint("dmenu: cannot open display\n");
|
|
screen = DefaultScreen(dpy);
|
|
root = RootWindow(dpy, screen);
|
|
|
|
if(isatty(STDIN_FILENO)) {
|
|
readstdin();
|
|
running = grabkeyboard();
|
|
}
|
|
else { /* prevent keypress loss */
|
|
running = grabkeyboard();
|
|
readstdin();
|
|
}
|
|
|
|
setup(bottom);
|
|
drawmenu();
|
|
XSync(dpy, False);
|
|
run();
|
|
cleanup();
|
|
XCloseDisplay(dpy);
|
|
return ret;
|
|
}
|