/*
 * Copyright (c) 2019 Derek Stevens, 2005 Russ Cox, 1994-1996 David Hogan
 * see README for license details
 */

#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/wait.h>
#include <X11/X.h>
#include <X11/Xos.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/keysym.h>
#include <X11/extensions/shape.h>
#include <X11/extensions/Xrandr.h>
#include "config.h"
#include "dat.h"
#include "fns.h"
#include "patchlevel.h"

enum { GrabAltTab, GrabAltAny };

/*static int tabcode = 0x17; */
/*static int altcode = 0x40; */
/*static int pgupcode = 0x63; */
/*static int pgdowncode = 0x69; */

static void alttab(int shift);

void keysetup(void) {
  int i;
  int tabcode = XKeysymToKeycode(dpy, XK_Tab);
#ifdef DESTROY_KEY
  int dcode = XKeysymToKeycode(dpy, DESTROY_KEY);
#endif
#ifdef ICON_KEY
  int icode = XKeysymToKeycode(dpy, ICON_KEY);
#endif
#ifdef UNHIDE_KEY
  int ucode = XKeysymToKeycode(dpy, UNHIDE_KEY);
#endif
#ifdef MAX_KEY
  int mcode = XKeysymToKeycode(dpy, MAX_KEY);
#endif
#ifdef MOVE_KEY
  int vcode = XKeysymToKeycode(dpy, MOVE_KEY);
#endif
#ifdef RESIZE_KEY
  int rcode = XKeysymToKeycode(dpy, RESIZE_KEY);
#endif
#ifdef STICK_KEY
  int scode = XKeysymToKeycode(dpy, STICK_KEY);
#endif
#ifdef WRANGLE_KEY
  int acode = XKeysymToKeycode(dpy, WRANGLE_KEY);
#endif
#ifdef SNAPLEFT_KEY
  int hcode = XKeysymToKeycode(dpy, SNAPLEFT_KEY);
#endif
#ifdef SNAPRIGHT_KEY
  int lcode = XKeysymToKeycode(dpy, SNAPRIGHT_KEY);
#endif
#ifdef SNAPBOTTOM_KEY
  int jcode = XKeysymToKeycode(dpy, SNAPBOTTOM_KEY);
#endif
#ifdef SNAPTOP_KEY
  int kcode = XKeysymToKeycode(dpy, SNAPTOP_KEY);
#endif
#ifdef SNAPTOPLEFT_KEY
  int qcode = XKeysymToKeycode(dpy, SNAPTOPLEFT_KEY);
#endif
#ifdef SNAPBOTTOMLEFT_KEY
  int wcode = XKeysymToKeycode(dpy, SNAPBOTTOMLEFT_KEY);
#endif
#ifdef SNAPBOTTOMRIGHT_KEY
  int ocode = XKeysymToKeycode(dpy, SNAPBOTTOMRIGHT_KEY);
#endif
#ifdef SNAPTOPRIGHT_KEY
  int pcode = XKeysymToKeycode(dpy, SNAPTOPRIGHT_KEY);
#endif
#ifdef SNAPCENTER_KEY
  int ccode = XKeysymToKeycode(dpy, SNAPCENTER_KEY);
#endif
#ifdef LAUNCH_KEY
  int slcode = XKeysymToKeycode(dpy, LAUNCH_KEY);
#endif
#ifdef ZOOM_KEY
  int zcode = XKeysymToKeycode(dpy, ZOOM_KEY);
#endif
#ifdef NEXTVIRT_KEY
  int rightcode = XKeysymToKeycode(dpy, NEXTVIRT_KEY);
#endif
#ifdef PREVVIRT_KEY
  int leftcode = XKeysymToKeycode(dpy, PREVVIRT_KEY);
#endif
#ifdef DEVEL
  int tcode = XKeysymToKeycode(dpy, STICKYTOFRONT_KEY);
  int bcode = XKeysymToKeycode(dpy, STICKYTOBACK_KEY);
#endif

  for (i = 0; i < num_screens; i++) {
    XGrabKey(
      dpy,
      tabcode,
      Mod1Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      tabcode,
      Mod1Mask | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#ifdef DESTROY_KEY
    XGrabKey(
      dpy,
      dcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      dcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef ICON_KEY
    XGrabKey(
      dpy,
      icode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      icode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef UNHIDE_KEY
    XGrabKey(
      dpy,
      ucode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      ucode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef RESIZE_KEY
    XGrabKey(
      dpy,
      rcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      rcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef MOVE_KEY
    XGrabKey(
      dpy,
      vcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      vcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef MAX_KEY
    XGrabKey(
      dpy,
      mcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      mcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef STICK_KEY
    XGrabKey(
      dpy,
      scode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      scode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef WRANGLE_KEY
    XGrabKey(
      dpy,
      acode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      acode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef SNAPLEFT_KEY
    XGrabKey(
      dpy,
      hcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      hcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef SNAPRIGHT_KEY
    XGrabKey(
      dpy,
      lcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      lcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef SNAPBOTTOM_KEY
    XGrabKey(
      dpy,
      jcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      jcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef SNAPTOP_KEY
    XGrabKey(
      dpy,
      kcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      kcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef SNAPTOPLEFT_KEY
    XGrabKey(
      dpy,
      qcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      qcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef SNAPBOTTOMLEFT_KEY
    XGrabKey(
      dpy,
      wcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      wcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef SNAPBOTTOMRIGHT_KEY
    XGrabKey(
      dpy,
      ocode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      ocode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef SNAPTOPRIGHT_KEY
    XGrabKey(
      dpy,
      pcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      pcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef SNAPCENTER_KEY
    XGrabKey(
      dpy,
      ccode,
      ShiftMask | SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      ccode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      ccode,
      ShiftMask | SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      ccode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef PREVVIRT_KEY
    XGrabKey(
      dpy,
      leftcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      leftcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef NEXTVIRT_KEY
    XGrabKey(
      dpy,
      rightcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      rightcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef LAUNCH_KEY
    XGrabKey(
      dpy,
      slcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      slcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
#ifdef ZOOM_KEY
    XGrabKey(
      dpy,
      zcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      zcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
    XGrabKey(
      dpy,
      tabcode,
      Mod1Mask | ShiftMask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      tabcode,
      Mod1Mask | ShiftMask | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#ifdef DEVEL
    XGrabKey(
      dpy,
      tcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      bcode,
      SHORTCUTMOD,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      tcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
    XGrabKey(
      dpy,
      bcode,
      SHORTCUTMOD | Mod2Mask,
      screens[i].root,
      0,
      GrabModeSync,
      GrabModeAsync);
#endif
    /*	XGrabKey(dpy, pgupcode, Mod1Mask, screens[i].root, 0, GrabModeSync,
     * GrabModeAsync); */
    /*	XGrabKey(dpy, pgdowncode, Mod1Mask, screens[i].root, 0, GrabModeSync,
     * GrabModeAsync); */
    /*	XGrabKey(dpy, altcode, 0, screens[i].root, 0, GrabModeSync,
     * GrabModeAsync); */
  }
}

void keypress(XKeyEvent* e) {
  /*
   * process key press here
   */
  static int m;
  static XRRMonitorInfo monitor;

  static int tabcode;
#ifdef DESTROY_KEY
  static int dcode;
#endif
#ifdef ICON_KEY
  static int icode;
#endif
#ifdef UNHIDE_KEY
  static int ucode;
#endif
#ifdef MAX_KEY
  static int mcode;
#endif
#ifdef MOVE_KEY
  static int vcode;
#endif
#ifdef STICK_KEY
  static int scode;
#endif
#ifdef WRANGLE_KEY
  static int acode;
#endif
#ifdef RESIZE_KEY
  static int rcode;
#endif
#ifdef LAUNCH_KEY
  static int slcode;
#endif
#ifdef ZOOM_KEY
  static int zcode;
#endif
#ifdef SNAPLEFT_KEY
  static int hcode;
#endif
#ifdef SNAPRIGHT_KEY
  static int lcode;
#endif
#ifdef SNAPBOTTOM_KEY
  static int jcode;
#endif
#ifdef SNAPTOP_KEY
  int kcode;
#endif
#ifdef SNAPTOPLEFT_KEY
  static int qcode;
#endif
#ifdef SNAPBOTTOMLEFT_KEY
  static int wcode;
#endif
#ifdef SNAPBOTTOMRIGHT_KEY
  static int ocode;
#endif
#ifdef SNAPTOPRIGHT_KEY
  static int pcode;
#endif
#ifdef SNAPCENTER_KEY
  static int ccode;
#endif
#ifdef NEXTVIRT_KEY
  static int rightcode;
#endif
#ifdef PREVVIRT_KEY
  static int leftcode;
#endif

  tabcode = XKeysymToKeycode(dpy, XK_Tab);
#ifdef DESTROY_KEY
  dcode = XKeysymToKeycode(dpy, DESTROY_KEY);
#endif
#ifdef ICON_KEY
  icode = XKeysymToKeycode(dpy, ICON_KEY);
#endif
#ifdef UNHIDE_KEY
  ucode = XKeysymToKeycode(dpy, UNHIDE_KEY);
#endif
#ifdef MAX_KEY
  mcode = XKeysymToKeycode(dpy, MAX_KEY);
#endif
#ifdef MOVE_KEY
  vcode = XKeysymToKeycode(dpy, MOVE_KEY);
#endif
#ifdef STICK_KEY
  scode = XKeysymToKeycode(dpy, STICK_KEY);
#endif
#ifdef WRANGLE_KEY
  acode = XKeysymToKeycode(dpy, WRANGLE_KEY);
#endif
#ifdef RESIZE_KEY
  rcode = XKeysymToKeycode(dpy, RESIZE_KEY);
#endif
#ifdef LAUNCH_KEY
  slcode = XKeysymToKeycode(dpy, LAUNCH_KEY);
#endif
#ifdef ZOOM_KEY
  zcode = XKeysymToKeycode(dpy, ZOOM_KEY);
#endif
#ifdef SNAPLEFT_KEY
  hcode = XKeysymToKeycode(dpy, SNAPLEFT_KEY);
#endif
#ifdef SNAPRIGHT_KEY
  lcode = XKeysymToKeycode(dpy, SNAPRIGHT_KEY);
#endif
#ifdef SNAPBOTTOM_KEY
  jcode = XKeysymToKeycode(dpy, SNAPBOTTOM_KEY);
#endif
#ifdef SNAPTOP_KEY
  kcode = XKeysymToKeycode(dpy, SNAPTOP_KEY);
#endif
#ifdef SNAPTOPLEFT_KEY
  qcode = XKeysymToKeycode(dpy, SNAPTOPLEFT_KEY);
#endif
#ifdef SNAPBOTTOMLEFT_KEY
  wcode = XKeysymToKeycode(dpy, SNAPBOTTOMLEFT_KEY);
#endif
#ifdef SNAPBOTTOMRIGHT_KEY
  ocode = XKeysymToKeycode(dpy, SNAPBOTTOMRIGHT_KEY);
#endif
#ifdef SNAPTOPRIGHT_KEY
  pcode = XKeysymToKeycode(dpy, SNAPTOPRIGHT_KEY);
#endif
#ifdef SNAPCENTER_KEY
  ccode = XKeysymToKeycode(dpy, SNAPCENTER_KEY);
#endif
#ifdef NEXTVIRT_KEY
  rightcode = XKeysymToKeycode(dpy, NEXTVIRT_KEY);
#endif
#ifdef PREVVIRT_KEY
  leftcode = XKeysymToKeycode(dpy, PREVVIRT_KEY);
#endif
#ifdef DEVEL
  int tcode = XKeysymToKeycode(dpy, STICKYTOFRONT_KEY);
  int bcode = XKeysymToKeycode(dpy, STICKYTOBACK_KEY);
#endif

  m = current ? getmonitorbyclient(current) : getmonitorbymouse();

  monitor = monitorinfo[m];

  /* basic wm functionality */
  if (e->keycode == tabcode && (e->state & Mod1Mask) == (1 << 3))
    alttab(e->state & ShiftMask);
#ifdef DESTROY_KEY
  else if (e->keycode == dcode && (e->state & SHORTCUTMOD) == (MODBITS))
    delete (current, 0);
#endif
#ifdef ICON_KEY
  else if (e->keycode == icode && (e->state & SHORTCUTMOD) == (MODBITS))
    hide(current);
#endif
#ifdef UNHIDE_KEY
  else if (e->keycode == ucode && (e->state & SHORTCUTMOD) == (MODBITS))
    unhide(0, 1);
#endif
#ifdef MOVE_KEY
  else if (e->keycode == vcode && (e->state & SHORTCUTMOD) == (MODBITS))
    move(current, Button3);
#endif
#ifdef RESIZE_KEY
  else if (e->keycode == rcode && (e->state & SHORTCUTMOD) == (MODBITS))
    reshape(current, Button3, sweep, 0);
#endif
#ifdef MAX_KEY
  else if (e->keycode == mcode && (e->state & SHORTCUTMOD) == (MODBITS))
    quickreshape(
      current,
      monitor.x,
      monitor.y,
      monitor.width,
      monitor.height,
      1);
#endif
#ifdef STICK_KEY
  else if (e->keycode == scode && (e->state & SHORTCUTMOD) == (MODBITS))
    stick(current);
#endif

    /* move to another monitor */

#ifdef WRANGLE_KEY
  else if (e->keycode == acode && (e->state & SHORTCUTMOD) == (MODBITS)) {
    wrangle(current, m < nmonitors - 1 ? monitorinfo[++m] : monitorinfo[0]);
  }
#endif

/* toggle zoom mode */
#ifdef ZOOM_KEY
  else if (e->keycode == zcode && (e->state & SHORTCUTMOD) == (MODBITS)) {
    zoom = !zoom;
    if (zoom) {
      quickreshape(
        current,
        monitor.x,
        monitor.y,
        monitor.width,
        monitor.height,
        1);
    }
  }
#endif

  /* half snap */
#ifdef SNAPLEFT_KEY
  else if (e->keycode == hcode && (e->state & SHORTCUTMOD) == (MODBITS))
    quickreshape(
      current,
      monitor.x + GAPSZ,
      monitor.y + GAPSZ,
      monitor.width / 2 - 1.5 * GAPSZ,
      monitor.height - 2 * GAPSZ,
      0);
#endif
#ifdef SNAPRIGHT_KEY
  else if (e->keycode == lcode && (e->state & SHORTCUTMOD) == (MODBITS))
    quickreshape(
      current,
      monitor.x + monitor.width / 2 + 0.5 * GAPSZ,
      monitor.y + GAPSZ,
      monitor.width / 2 - 1.5 * GAPSZ,
      monitor.height - 2 * GAPSZ,
      0);
#endif
#ifdef SNAPBOTTOM_KEY
  else if (e->keycode == jcode && (e->state & SHORTCUTMOD) == (MODBITS))
    quickreshape(
      current,
      monitor.x + GAPSZ,
      monitor.y + monitor.height / 2 + 0.5 * GAPSZ,
      monitor.width - 2 * GAPSZ,
      monitor.height / 2 - 1.5 * GAPSZ,
      0);
#endif
#ifdef SNAPTOP_KEY
  else if (e->keycode == kcode && (e->state & SHORTCUTMOD) == (MODBITS))
    quickreshape(
      current,
      monitor.x + GAPSZ,
      monitor.y + GAPSZ,
      monitor.width - 2 * GAPSZ,
      monitor.height / 2 - 1.5 * GAPSZ,
      0);
#endif

    /* quarter snap */
#ifdef SNAPTOPLEFT_KEY
  else if (e->keycode == qcode && (e->state & SHORTCUTMOD) == (MODBITS))
    quickreshape(
      current,
      monitor.x + GAPSZ,
      monitor.y + GAPSZ,
      monitor.width / 2 - 1.5 * GAPSZ,
      monitor.height / 2 - 1.5 * GAPSZ,
      0);
#endif
#ifdef SNAPBOTTOMLEFT_KEY
  else if (e->keycode == wcode && (e->state & SHORTCUTMOD) == (MODBITS))
    quickreshape(
      current,
      monitor.x + GAPSZ,
      monitor.y + monitor.height / 2 + 0.5 * GAPSZ,
      monitor.width / 2 - 1.5 * GAPSZ,
      monitor.height / 2 - 1.5 * GAPSZ,
      0);
#endif
#ifdef SNAPBOTTOMRIGHT_KEY
  else if (e->keycode == ocode && (e->state & SHORTCUTMOD) == (MODBITS))
    quickreshape(
      current,
      monitor.x + monitor.width / 2 + 0.5 * GAPSZ,
      monitor.y + monitor.height / 2 + 0.5 * GAPSZ,
      monitor.width / 2 - 1.5 * GAPSZ,
      monitor.height / 2 - 1.5 * GAPSZ,
      0);
#endif
#ifdef SNAPTOPRIGHT_KEY
  else if (e->keycode == pcode && (e->state & SHORTCUTMOD) == (MODBITS))
    quickreshape(
      current,
      monitor.x + monitor.width / 2 + 0.5 * GAPSZ,
      monitor.y + GAPSZ,
      monitor.width / 2 - 1.5 * GAPSZ,
      monitor.height / 2 - 1.5 * GAPSZ,
      0);
#endif

    /* center snap */
#ifdef SNAPCENTER_KEY
  else if (e->keycode == ccode && (e->state & SHORTCUTMOD) == (MODBITS)) {
    if ((e->state & ShiftMask) == (1 << 0)) {
#ifdef CENTERVMAX
      centerclient(current, monitor, 0);
#else
      centerclient(current, monitor, 1);
#endif
    } else {
#ifdef CENTERVMAX
      centerclient(current, monitor, 1);
#else
      centerclient(current, monitor, 0);
#endif
    }
  }
#endif

#ifdef DEVEL
  /* manage autostuck windows */
  if (e->keycode == tcode && (e->state & SHORTCUTMOD) == (MODBITS))
    stickystack(1);
  if (e->keycode == bcode && (e->state & SHORTCUTMOD) == (MODBITS))
    stickystack(0);
#endif

    /* launch */
#ifdef LAUNCH_KEY
  else if (e->keycode == slcode && (e->state & SHORTCUTMOD) == (MODBITS)) {
    kbLaunch = 1;
    if (fork() == 0) {
      if (fork() == 0) {
        // this code doesn't seem necessary
        // close(ConnectionNumber(dpy));
        //  if (dpy != '\0')
        //  putenv(dpy);
        signal(SIGINT, SIG_DFL);
        signal(SIGTERM, SIG_DFL);
        signal(SIGHUP, SIG_DFL);
        if (termprog != NULL) {
          execl(shell, shell, "-c", termprog, (char*)0);
          fprintf(stderr, "ryudo: exec %s", shell);
          perror(" failed");
        }
        execlp("urxvt", "urxvt", (char*)0);
        execlp("9term", "9term", scrolling ? "-ws" : "-w", (char*)0);
        execlp("xterm", "xterm", "-ut", (char*)0);
        perror("ryudo: exec urxvt/9term/xterm failed");
        exit(1);
      }
      exit(0);
    }
    wait((int*)0);
  }
#endif

  /* switch virts */
#ifdef NEXTVIRT_KEY
  else if (e->keycode == rightcode && (e->state & SHORTCUTMOD) == (MODBITS)) {
    if (numvirtuals > 1)
      if (virt < numvirtuals - 1)
        switch_to(virt + 1);
      else
        switch_to(0);
  }
#endif

#ifdef PREVVIRT_KEY
  else if (e->keycode == leftcode && (e->state & SHORTCUTMOD) == (MODBITS)) {
    if (numvirtuals > 1)
      if (virt > 0)
        switch_to(virt - 1);
      else
        switch_to(numvirtuals - 1);
  }
#endif

  XAllowEvents(dpy, SyncKeyboard, e->time);
}

void keyrelease(XKeyEvent* e) { XAllowEvents(dpy, SyncKeyboard, e->time); }

void quickreshape(Client* c, int x, int y, int dx, int dy, int max) {
  if (c == 0)
    return;
  XMoveResizeWindow(dpy, c->parent, x, y, dx, dy);
  if (max)
    c->border = 0;
  else
    c->border = BORDER;

  c->x = x + c->border;
  c->y = y + c->border;
  c->dx = dx - 2 * c->border;
  c->dy = dy - 2 * c->border;
  XMoveResizeWindow(dpy, c->window, c->border, c->border, c->dx, c->dy);
  sendconfig(c);
}

void centerclient(Client* c, XRRMonitorInfo monitor, int vmax) {
  static int centeroffsetnum =
    CENTERNUM % 2 == 0 ? CENTERDEN - CENTERNUM : (CENTERDEN - CENTERNUM) / 2;

  static int centeroffsetden = CENTERNUM % 2 == 0 ? CENTERDEN * 2 : CENTERDEN;

  if (vmax) {
    quickreshape(
      c,
      monitor.x + centeroffsetnum * monitor.width / centeroffsetden,
      monitor.y + GAPSZ,
      CENTERNUM * monitor.width / CENTERDEN,
      monitor.height - 2 * GAPSZ,
      0);
  } else {
    quickreshape(
      c,
      monitor.x + centeroffsetnum * monitor.width / centeroffsetden,
      monitor.y + centeroffsetnum * monitor.height / centeroffsetden,
      CENTERNUM * monitor.width / CENTERDEN,
      CENTERNUM * monitor.height / CENTERDEN,
      0);
  }
}

static void alttab(int shift) {
  static int monitor;

  if (!shift) {
    shuffle(0);
  } else {
    monitor = getmonitorbyclient(current);
    if (monitor == nmonitors - 1) {
      monitor = 0;
    } else {
      monitor++;
    }
    shuffleonmonitor(monitor);
  }
}

#ifdef DEVEL
void stickystack(int toTop) {
  Client* c;
  if (toTop) {
    for (c = clients; c->next; c = c->next) {
      if (c && isautostick(c))
        top(c);
    }
  } else {
    for (c = clients; c->next; c = c->next) {
      if (c && !isautostick(c))
        top(c);
    }
  }
}
#endif