mirror of https://github.com/0intro/wmii
430 lines
10 KiB
C
430 lines
10 KiB
C
/*
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* (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
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* (C)opyright MMVI Sander van Dijk <a dot h dot vandijk at gmail dot com>
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* See LICENSE file for license details.
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*/
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#include <ctype.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 <sys/stat.h>
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#include <sys/wait.h>
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#include <time.h>
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#include <unistd.h>
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#include <X11/Xlib.h>
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#include <X11/cursorfont.h>
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#include <X11/Xutil.h>
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#include <X11/keysym.h>
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#include "blitz.h"
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static Bool done = False;
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static int ret = 0;
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static char text[4096];
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static Color selcolor;
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static Color normcolor;
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static Display *dpy;
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static Window win;
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static XRectangle mrect;
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static int screen;
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static char **allitem = nil;
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static unsigned int nallitem = 0;
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static unsigned int allitemsz = 0;
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static char **item = nil;
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static unsigned int itemsz = 0;
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static unsigned int nitem = 0;
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static int sel = -1;
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static unsigned int nextoff = 0;
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static unsigned int prevoff = 0;
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static unsigned int curroff = 0;
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static unsigned int cmdw = 0;
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static Draw draw = { 0 };
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static const int seek = 30; /* 30px */
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static void check_event(void);
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static void draw_menu(void);
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static void handle_kpress(XKeyEvent * e);
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static char version[] = "wmiimenu - " VERSION ", (C)opyright MMIV-MMVI Anselm R. Garbe\n";
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static void
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usage()
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{
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fprintf(stderr, "%s", "usage: wmiimenu [-v]\n");
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exit(1);
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}
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static void
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update_offsets()
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{
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unsigned int i;
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unsigned int w = cmdw + 2 * seek;
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if(!nitem)
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return;
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for(i = curroff; i < nitem; i++) {
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w += XTextWidth(draw.font, item[i], strlen(item[i])) + mrect.height;
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if(w > mrect.width)
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break;
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}
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nextoff = i;
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w = cmdw + 2 * seek;
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for(i = curroff; i > 0; i--) {
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w += XTextWidth(draw.font, item[i], strlen(item[i])) + mrect.height;
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if(w > mrect.width)
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break;
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}
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prevoff = i;
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}
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static unsigned int
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update_items(char *pattern)
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{
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unsigned int plen = strlen(pattern);
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int i;
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curroff = prevoff = nextoff = 0;
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sel = -1;
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for(i = 0; i < nitem; i++)
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item[i] = nil; /* faster than cext_array_detach */
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nitem = 0;
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for(i = 0; i < nallitem; i++) {
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if(!plen || !strncmp(pattern, allitem[i], plen))
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{
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item = (char **)cext_array_attach((void **)item, allitem[i],
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sizeof(char *), &itemsz);
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nitem++;
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}
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}
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for(i = 0; i < nallitem; i++) {
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if(plen && strncmp(pattern, allitem[i], plen)
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&& strstr(allitem[i], pattern))
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{
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item = (char **)cext_array_attach((void **)item, allitem[i],
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sizeof(char *), &itemsz);
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nitem++;
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}
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}
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if(nitem)
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sel = 0;
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update_offsets();
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return nitem;
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}
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/* creates draw structs for menu mode drawing */
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static void
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draw_menu()
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{
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unsigned int i, offx = 0;
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draw.rect = mrect;
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draw.rect.x = 0;
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draw.rect.y = 0;
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draw.color = normcolor;
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blitz_drawlabelnoborder(dpy, &draw);
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/* print command */
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draw.align = WEST;
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draw.data = text;
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if(cmdw && nitem)
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draw.rect.width = cmdw;
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offx += draw.rect.width;
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blitz_drawlabelnoborder(dpy, &draw);
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draw.align = CENTER;
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if(nitem) {
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draw.color = normcolor;
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draw.data = prevoff < curroff ? "<" : nil;
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draw.rect.x = offx;
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draw.rect.width = seek;
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offx += draw.rect.width;
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blitz_drawlabelnoborder(dpy, &draw);
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/* determine maximum items */
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for(i = curroff; i < nextoff; i++) {
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draw.data = item[i];
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draw.rect.x = offx;
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draw.rect.width =
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XTextWidth(draw.font, draw.data, strlen(draw.data)) + mrect.height;
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offx += draw.rect.width;
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if(sel == i) {
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draw.color = selcolor;
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blitz_drawlabel(dpy, &draw);
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} else {
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draw.color = normcolor;
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blitz_drawlabelnoborder(dpy, &draw);
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}
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}
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draw.color = normcolor;
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draw.data = nitem > nextoff ? ">" : nil;
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draw.rect.x = mrect.width - seek;
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draw.rect.width = seek;
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blitz_drawlabelnoborder(dpy, &draw);
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}
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XCopyArea(dpy, draw.drawable, win, draw.gc, 0, 0, mrect.width, mrect.height, 0, 0);
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XSync(dpy, False);
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}
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static void
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handle_kpress(XKeyEvent * e)
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{
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KeySym ksym;
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char buf[32];
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int num;
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unsigned int 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(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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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_N:
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case XK_n:
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ksym = XK_Right;
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break;
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case XK_P:
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case XK_p:
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ksym = XK_Left;
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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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update_items(text);
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draw_menu();
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return;
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break;
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case XK_bracketleft:
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ksym = XK_Escape;
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break;
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default: /* ignore other control sequences */
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return;
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break;
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}
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}
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switch (ksym) {
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case XK_Left:
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if(sel <= 0)
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return;
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sel--;
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break;
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case XK_Tab:
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if(!nitem)
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return;
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cext_strlcpy(text, item[sel], sizeof(text));
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update_items(text);
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break;
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case XK_Right:
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if(sel < 0 || (sel + 1 == nitem))
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return;
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sel++;
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break;
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case XK_Return:
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if(sel >= 0)
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fprintf(stdout, "%s", item[sel]);
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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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done = True;
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break;
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case XK_Escape:
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ret = 1;
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done = True;
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break;
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case XK_BackSpace:
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if(len) {
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unsigned int i = len;
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if(i) {
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int prev_nitem;
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do
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text[--i] = 0;
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while((prev_nitem = nitem) && i && prev_nitem == update_items(text));
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}
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update_items(text);
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}
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break;
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default:
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if((num == 1) && !iscntrl((int) buf[0])) {
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buf[num] = 0;
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if(len > 0)
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cext_strlcat(text, buf, sizeof(text));
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else
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cext_strlcpy(text, buf, sizeof(text));
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update_items(text);
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}
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}
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if(sel >= 0) {
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if(sel == curroff - 1) {
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curroff = prevoff;
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update_offsets();
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} else if((sel == nextoff) && (nitem > nextoff)) {
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curroff = nextoff;
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update_offsets();
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}
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}
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draw_menu();
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}
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static void
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check_event()
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{
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XEvent ev;
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while(XPending(dpy)) {
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XNextEvent(dpy, &ev);
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switch (ev.type) {
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case KeyPress:
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handle_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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draw_menu();
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}
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break;
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default:
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break;
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}
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}
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}
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void
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read_allitems()
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{
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char *maxname = 0, *p, buf[1024];
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unsigned int len = 0, max = 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') /* there might be no \n after the last item */
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buf[len - 1] = 0; /* removing \n */
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p = strdup(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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allitem = (char **)cext_array_attach((void **)allitem, p,
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sizeof(char *), &allitemsz);
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nallitem++;
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}
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if(maxname)
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cmdw = XTextWidth(draw.font, maxname, max) + mrect.height;
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}
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int
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main(int argc, char *argv[])
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{
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int i;
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XSetWindowAttributes wa;
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char *fontstr, *selcolstr, *normcolstr;
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/* command line args */
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for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
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switch (argv[i][1]) {
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case 'v':
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fprintf(stdout, "%s", version);
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exit(0);
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break;
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default:
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usage();
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break;
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}
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}
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dpy = XOpenDisplay(0);
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if(!dpy) {
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fprintf(stderr, "%s", "wmiimenu: cannot open display\n");
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exit(1);
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}
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screen = DefaultScreen(dpy);
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/* set font and colors */
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fontstr = getenv("WMII_FONT");
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if (!fontstr)
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fontstr = strdup(BLITZ_FONT);
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draw.font = blitz_getfont(dpy, fontstr);
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normcolstr = getenv("WMII_NORMCOLORS");
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if (!normcolstr || strlen(normcolstr) != 23)
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normcolstr = strdup(BLITZ_NORMCOLORS);
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blitz_loadcolor(dpy, screen, normcolstr, &normcolor);
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selcolstr = getenv("WMII_SELCOLORS");
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if (!selcolstr || strlen(selcolstr) != 23)
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selcolstr = strdup(BLITZ_SELCOLORS);
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blitz_loadcolor(dpy, screen, selcolstr, &selcolor);
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wa.override_redirect = 1;
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wa.background_pixmap = ParentRelative;
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wa.event_mask = ExposureMask | ButtonPressMask | KeyPressMask
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| SubstructureRedirectMask | SubstructureNotifyMask;
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mrect.width = DisplayWidth(dpy, screen);
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mrect.height = draw.font->ascent + draw.font->descent + 4;
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mrect.y = DisplayHeight(dpy, screen) - mrect.height;
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mrect.x = 0;
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win = XCreateWindow(dpy, RootWindow(dpy, screen), mrect.x, mrect.y,
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mrect.width, mrect.height, 0, DefaultDepth(dpy, screen),
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CopyFromParent, DefaultVisual(dpy, screen),
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CWOverrideRedirect | CWBackPixmap | CWEventMask,
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&wa);
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XDefineCursor(dpy, win, XCreateFontCursor(dpy, XC_xterm));
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XSync(dpy, False);
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/* pixmap */
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draw.gc = XCreateGC(dpy, win, 0, 0);
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draw.drawable = XCreatePixmap(dpy, win, mrect.width, mrect.height,
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DefaultDepth(dpy, screen));
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XSync(dpy, False);
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read_allitems();
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text[0] = 0;
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update_items(text);
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XMapRaised(dpy, win);
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draw_menu();
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XSync(dpy, False);
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while(XGrabKeyboard
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(dpy, RootWindow(dpy, screen), True, GrabModeAsync,
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GrabModeAsync, CurrentTime) != GrabSuccess)
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usleep(1000);
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/* main event loop */
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while (!done) {
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check_event();
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usleep(1000);
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}
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XFreePixmap(dpy, draw.drawable);
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XFreeGC(dpy, draw.gc);
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XDestroyWindow(dpy, win);
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XCloseDisplay(dpy);
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return ret;
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}
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