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455 lines
12 KiB
455 lines
12 KiB
/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
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* See LICENSE file for license details.
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*/
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#include "dwm.h"
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#include <errno.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/select.h>
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#include <X11/cursorfont.h>
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#include <X11/keysym.h>
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#include <X11/Xatom.h>
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#include <X11/Xproto.h>
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/* extern */
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char stext[256];
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int bh, bmw, screen, sx, sy, sw, sh, wax, way, waw, wah;
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unsigned int ntags, numlockmask;
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Atom wmatom[WMLast], netatom[NetLast];
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Bool running = True;
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Bool *seltag;
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Bool selscreen = True;
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Client *clients = NULL;
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Client *sel = NULL;
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Client *stack = NULL;
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Cursor cursor[CurLast];
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Display *dpy;
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DC dc = {0};
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Window root, barwin;
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/* static */
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static int (*xerrorxlib)(Display *, XErrorEvent *);
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static Bool otherwm, readin;
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static void
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cleanup(void) {
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close(STDIN_FILENO);
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while(stack) {
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if(stack->isbanned)
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XMoveWindow(dpy, stack->win, stack->x, stack->y);
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unmanage(stack);
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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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XUngrabKey(dpy, AnyKey, AnyModifier, root);
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XFreePixmap(dpy, dc.drawable);
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XFreeGC(dpy, dc.gc);
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XDestroyWindow(dpy, barwin);
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XFreeCursor(dpy, cursor[CurNormal]);
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XFreeCursor(dpy, cursor[CurResize]);
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XFreeCursor(dpy, cursor[CurMove]);
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XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
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XSync(dpy, False);
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free(seltag);
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}
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static unsigned int
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textnw(const char *text, unsigned int len) {
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XRectangle r;
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if(dc.font.set) {
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XmbTextExtents(dc.font.set, text, len, NULL, &r);
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return r.width;
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}
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return XTextWidth(dc.font.xfont, text, len);
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}
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static void
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drawtext(const char *text, unsigned long col[ColLast], Bool filledsquare, Bool emptysquare) {
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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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XGCValues gcv;
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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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gcv.foreground = col[ColFG];
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if(dc.font.set) {
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XChangeGC(dpy, dc.gc, GCForeground, &gcv);
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XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
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}
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else {
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gcv.font = dc.font.xfont->fid;
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XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
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XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
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}
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x = (h + 2) / 4;
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r.x = dc.x + 1;
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r.y = dc.y + 1;
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if(filledsquare) {
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r.width = r.height = x + 1;
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XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
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}
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else if(emptysquare) {
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r.width = r.height = x;
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XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
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}
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}
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static 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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static Bool
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isoccupied(unsigned int t) {
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Client *c;
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for(c = clients; c; c = c->next)
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if(c->tags[t])
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return True;
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return False;
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}
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static void
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scan(void) {
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unsigned int i, num;
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Window *wins, d1, d2;
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XWindowAttributes wa;
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wins = NULL;
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if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
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for(i = 0; i < num; i++) {
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if(!XGetWindowAttributes(dpy, wins[i], &wa)
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|| wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
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continue;
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if(wa.map_state == IsViewable)
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manage(wins[i], &wa);
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}
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}
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if(wins)
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XFree(wins);
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}
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static void
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setfont(const char *fontstr) {
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char *def, **missing;
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int i, n;
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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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while(n--)
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fprintf(stderr, "missing fontset: %s\n", missing[n]);
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XFreeStringList(missing);
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}
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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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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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static void
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setup(void) {
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int i, j;
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unsigned int mask;
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Window w;
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XModifierKeymap *modmap;
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XSetWindowAttributes wa;
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/* init atoms */
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wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
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wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
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wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
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netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
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netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
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XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
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PropModeReplace, (unsigned char *) netatom, NetLast);
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/* init cursors */
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cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
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cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
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cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
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/* init modifier map */
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numlockmask = 0;
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modmap = XGetModifierMapping(dpy);
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for (i = 0; i < 8; i++)
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for (j = 0; j < modmap->max_keypermod; j++) {
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if(modmap->modifiermap[i * modmap->max_keypermod + j]
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== XKeysymToKeycode(dpy, XK_Num_Lock))
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numlockmask = (1 << i);
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}
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XFreeModifiermap(modmap);
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/* select for events */
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wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
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| EnterWindowMask | LeaveWindowMask;
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wa.cursor = cursor[CurNormal];
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XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
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grabkeys();
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compileregexps();
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for(ntags = 0; tags[ntags]; ntags++);
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seltag = emallocz(sizeof(Bool) * ntags);
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seltag[0] = True;
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/* style */
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dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
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dc.norm[ColBG] = getcolor(NORMBGCOLOR);
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dc.norm[ColFG] = getcolor(NORMFGCOLOR);
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dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
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dc.sel[ColBG] = getcolor(SELBGCOLOR);
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dc.sel[ColFG] = getcolor(SELFGCOLOR);
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setfont(FONT);
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/* geometry */
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sx = sy = 0;
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sw = DisplayWidth(dpy, screen);
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sh = DisplayHeight(dpy, screen);
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bmw = textw(TILESYMBOL) > textw(FLOATSYMBOL) ? textw(TILESYMBOL) : textw(FLOATSYMBOL);
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/* bar */
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dc.h = bh = dc.font.height + 2;
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wa.override_redirect = 1;
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wa.background_pixmap = ParentRelative;
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wa.event_mask = ButtonPressMask | ExposureMask;
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barwin = XCreateWindow(dpy, root, sx, sy + (TOPBAR ? 0 : sh - bh), sw, bh, 0,
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DefaultDepth(dpy, screen), CopyFromParent, DefaultVisual(dpy, screen),
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CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
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XDefineCursor(dpy, barwin, cursor[CurNormal]);
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XMapRaised(dpy, barwin);
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strcpy(stext, "dwm-"VERSION);
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/* windowarea */
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wax = sx;
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way = sy + (TOPBAR ? bh : 0);
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wah = sh - bh;
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waw = sw;
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/* pixmap for everything */
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dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
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dc.gc = XCreateGC(dpy, root, 0, 0);
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XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
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/* multihead support */
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selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
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}
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/*
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* Startup Error handler to check if another window manager
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* is already running.
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*/
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static int
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xerrorstart(Display *dsply, XErrorEvent *ee) {
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otherwm = True;
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return -1;
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}
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/* extern */
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void
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drawstatus(void) {
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int i, x;
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dc.x = dc.y = 0;
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for(i = 0; i < ntags; i++) {
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dc.w = textw(tags[i]);
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if(seltag[i])
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drawtext(tags[i], dc.sel, sel && sel->tags[i], isoccupied(i));
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else
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drawtext(tags[i], dc.norm, sel && sel->tags[i], isoccupied(i));
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dc.x += dc.w;
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}
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dc.w = bmw;
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drawtext(arrange == dofloat ? FLOATSYMBOL : TILESYMBOL, dc.norm, False, False);
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x = dc.x + dc.w;
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dc.w = textw(stext);
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dc.x = sw - dc.w;
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if(dc.x < x) {
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dc.x = x;
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dc.w = sw - x;
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}
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drawtext(stext, dc.norm, False, False);
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if((dc.w = dc.x - x) > bh) {
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dc.x = x;
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drawtext(sel ? sel->name : NULL, sel ? dc.sel : dc.norm, False, False);
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}
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XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0);
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XSync(dpy, False);
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}
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void
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sendevent(Window w, Atom a, long value) {
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XEvent e;
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e.type = ClientMessage;
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e.xclient.window = w;
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e.xclient.message_type = a;
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e.xclient.format = 32;
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e.xclient.data.l[0] = value;
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e.xclient.data.l[1] = CurrentTime;
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XSendEvent(dpy, w, False, NoEventMask, &e);
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XSync(dpy, False);
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}
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unsigned int
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textw(const char *text) {
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return textnw(text, strlen(text)) + dc.font.height;
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}
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void
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quit(Arg *arg) {
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readin = running = False;
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}
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/* There's no way to check accesses to destroyed windows, thus those cases are
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* ignored (especially on UnmapNotify's). Other types of errors call Xlibs
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* default error handler, which may call exit.
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*/
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int
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xerror(Display *dpy, XErrorEvent *ee) {
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if(ee->error_code == BadWindow
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|| (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
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|| (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
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|| (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
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|| (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
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|| (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
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|| (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
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|| (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
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return 0;
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fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
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ee->request_code, ee->error_code);
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return xerrorxlib(dpy, ee); /* may call exit */
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}
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int
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main(int argc, char *argv[]) {
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char *p;
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int r, xfd;
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fd_set rd;
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XEvent ev;
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if(argc == 2 && !strncmp("-v", argv[1], 3)) {
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fputs("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n", stdout);
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exit(EXIT_SUCCESS);
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}
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else if(argc != 1)
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eprint("usage: dwm [-v]\n");
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setlocale(LC_CTYPE, "");
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dpy = XOpenDisplay(0);
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if(!dpy)
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eprint("dwm: cannot open display\n");
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xfd = ConnectionNumber(dpy);
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screen = DefaultScreen(dpy);
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root = RootWindow(dpy, screen);
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otherwm = False;
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XSetErrorHandler(xerrorstart);
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/* this causes an error if some other window manager is running */
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XSelectInput(dpy, root, SubstructureRedirectMask);
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XSync(dpy, False);
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if(otherwm)
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eprint("dwm: another window manager is already running\n");
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XSync(dpy, False);
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XSetErrorHandler(NULL);
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xerrorxlib = XSetErrorHandler(xerror);
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XSync(dpy, False);
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setup();
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drawstatus();
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scan();
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/* main event loop, also reads status text from stdin */
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XSync(dpy, False);
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readin = True;
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while(running) {
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FD_ZERO(&rd);
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if(readin)
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FD_SET(STDIN_FILENO, &rd);
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FD_SET(xfd, &rd);
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if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
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if(errno == EINTR)
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continue;
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eprint("select failed\n");
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}
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if(FD_ISSET(STDIN_FILENO, &rd)) {
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switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
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case -1:
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strncpy(stext, strerror(errno), sizeof stext - 1);
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stext[sizeof stext - 1] = '\0';
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readin = False;
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break;
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case 0:
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strncpy(stext, "EOF", 4);
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readin = False;
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break;
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default:
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for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
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for(; p >= stext && *p != '\n'; --p);
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if(p > stext)
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strncpy(stext, p + 1, sizeof stext);
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}
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drawstatus();
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}
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if(FD_ISSET(xfd, &rd))
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while(XPending(dpy)) {
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XNextEvent(dpy, &ev);
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if(handler[ev.type])
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(handler[ev.type])(&ev); /* call handler */
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}
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}
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cleanup();
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XCloseDisplay(dpy);
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return 0;
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}
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