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426 lines
8.1 KiB
426 lines
8.1 KiB
/* |
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* (C)opyright 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 "dmenu.h" |
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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 <unistd.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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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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}; |
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static Display *dpy; |
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static Window root; |
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static Window win; |
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static Bool done = False; |
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static Item *allitem = 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 *nextoff = NULL; |
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static Item *prevoff = NULL; |
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static Item *curroff = NULL; |
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static int screen, mx, my, mw, mh; |
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static char *title = NULL; |
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static char text[4096]; |
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static int ret = 0; |
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static int nitem = 0; |
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static unsigned int cmdw = 0; |
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static unsigned int tw = 0; |
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static unsigned int cw = 0; |
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static const int seek = 30; /* 30px */ |
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static Brush brush = {0}; |
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static void draw_menu(); |
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static void kpress(XKeyEvent * e); |
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static char version[] = "dmenu - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n"; |
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static void |
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update_offsets() |
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{ |
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unsigned int tw, w = cmdw + 2 * seek; |
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if(!curroff) |
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return; |
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for(nextoff = curroff; nextoff; nextoff=nextoff->right) { |
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tw = textw(&brush.font, nextoff->text); |
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if(tw > mw / 3) |
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tw = mw / 3; |
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w += tw + brush.font.height; |
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if(w > mw) |
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break; |
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} |
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w = cmdw + 2 * seek; |
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for(prevoff = curroff; prevoff && prevoff->left; prevoff=prevoff->left) { |
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tw = textw(&brush.font, prevoff->left->text); |
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if(tw > mw / 3) |
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tw = mw / 3; |
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w += tw + brush.font.height; |
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if(w > mw) |
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break; |
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} |
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} |
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static void |
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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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Item *i, *j; |
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if(!pattern) |
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return; |
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if(!title || *pattern) |
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cmdw = cw; |
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else |
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cmdw = tw; |
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item = j = NULL; |
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nitem = 0; |
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for(i = allitem; i; i=i->next) |
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if(!plen || !strncmp(pattern, i->text, plen)) { |
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if(!j) |
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item = i; |
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else |
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j->right = i; |
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i->left = j; |
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i->right = NULL; |
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j = i; |
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nitem++; |
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} |
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for(i = allitem; i; i=i->next) |
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if(plen && strncmp(pattern, i->text, plen) |
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&& strstr(i->text, pattern)) { |
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if(!j) |
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item = i; |
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else |
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j->right = i; |
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i->left = j; |
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i->right = NULL; |
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j = i; |
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nitem++; |
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} |
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curroff = prevoff = nextoff = sel = item; |
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update_offsets(); |
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} |
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/* creates brush structs for brush mode drawing */ |
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static void |
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draw_menu() |
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{ |
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Item *i; |
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brush.x = 0; |
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brush.y = 0; |
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brush.w = mw; |
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brush.h = mh; |
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draw(dpy, &brush, False, 0); |
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/* print command */ |
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if(!title || text[0]) { |
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cmdw = cw; |
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if(cmdw && item) |
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brush.w = cmdw; |
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draw(dpy, &brush, False, text); |
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} |
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else { |
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cmdw = tw; |
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brush.w = cmdw; |
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draw(dpy, &brush, False, title); |
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} |
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brush.x += brush.w; |
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if(curroff) { |
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brush.w = seek; |
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draw(dpy, &brush, False, (curroff && curroff->left) ? "<" : 0); |
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brush.x += brush.w; |
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/* determine maximum items */ |
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for(i = curroff; i != nextoff; i=i->right) { |
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brush.border = False; |
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brush.w = textw(&brush.font, i->text); |
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if(brush.w > mw / 3) |
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brush.w = mw / 3; |
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brush.w += brush.font.height; |
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if(sel == i) { |
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swap((void **)&brush.fg, (void **)&brush.bg); |
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draw(dpy, &brush, True, i->text); |
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swap((void **)&brush.fg, (void **)&brush.bg); |
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} |
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else |
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draw(dpy, &brush, False, i->text); |
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brush.x += brush.w; |
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} |
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brush.x = mw - seek; |
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brush.w = seek; |
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draw(dpy, &brush, False, nextoff ? ">" : 0); |
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} |
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XCopyArea(dpy, brush.drawable, win, brush.gc, 0, 0, mw, mh, 0, 0); |
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XFlush(dpy); |
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} |
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static void |
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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, prev_nitem; |
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unsigned int i, 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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default: /* ignore other control sequences */ |
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return; |
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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_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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} |
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} |
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switch(ksym) { |
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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 == curroff) { |
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curroff = prevoff; |
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update_offsets(); |
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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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update_items(text); |
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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 == nextoff) { |
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curroff = nextoff; |
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update_offsets(); |
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} |
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break; |
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case XK_Return: |
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if(e->state & ShiftMask) { |
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if(text) |
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fprintf(stdout, "%s", text); |
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} |
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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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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((i = len)) { |
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prev_nitem = nitem; |
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do { |
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text[--i] = 0; |
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update_items(text); |
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} while(i && nitem && prev_nitem == nitem); |
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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 && !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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update_items(text); |
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} |
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} |
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draw_menu(); |
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} |
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static char * |
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read_allitems() |
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{ |
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static char *maxname = NULL; |
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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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allitem = 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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return maxname; |
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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 *maxname; |
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XEvent ev; |
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/* command line args */ |
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for(i = 1; i < argc; i++) { |
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if (argv[i][0] == '-') |
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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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case 't': |
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if(++i < argc) { |
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title = argv[i]; |
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break; |
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} |
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default: |
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eprint("usage: dmenu [-v] [-t <title>]\n"); |
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break; |
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} |
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else |
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eprint("usage: dmenu [-v] [-t <title>]\n"); |
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} |
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dpy = XOpenDisplay(0); |
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if(!dpy) |
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eprint("dmenu: cannot open dpy\n"); |
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screen = DefaultScreen(dpy); |
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root = RootWindow(dpy, screen); |
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maxname = read_allitems(); |
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/* grab as early as possible, but after reading all items!!! */ |
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while(XGrabKeyboard(dpy, root, True, GrabModeAsync, |
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GrabModeAsync, CurrentTime) != GrabSuccess) |
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usleep(1000); |
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/* style */ |
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loadcolors(dpy, screen, &brush, BGCOLOR, FGCOLOR, BORDERCOLOR); |
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loadfont(dpy, &brush.font, FONT); |
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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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mx = my = 0; |
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mw = DisplayWidth(dpy, screen); |
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mh = texth(&brush.font); |
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win = XCreateWindow(dpy, root, mx, my, 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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XDefineCursor(dpy, win, XCreateFontCursor(dpy, XC_xterm)); |
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XFlush(dpy); |
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/* pixmap */ |
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brush.gc = XCreateGC(dpy, root, 0, 0); |
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brush.drawable = XCreatePixmap(dpy, win, mw, mh, |
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DefaultDepth(dpy, screen)); |
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XFlush(dpy); |
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if(maxname) |
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cw = textw(&brush.font, maxname) + brush.font.height; |
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if(cw > mw / 3) |
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cw = mw / 3; |
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if(title) { |
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tw = textw(&brush.font, title) + brush.font.height; |
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if(tw > mw / 3) |
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tw = mw / 3; |
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} |
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cmdw = title ? tw : cw; |
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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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XFlush(dpy); |
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/* main event loop */ |
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while(!done && !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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draw_menu(); |
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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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XUngrabKeyboard(dpy, CurrentTime); |
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XFreePixmap(dpy, brush.drawable); |
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XFreeGC(dpy, brush.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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