Configureable button mappings!

[chaz/openbox] / src / Window.cc

// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*-
// Window.cc for Blackbox - an X11 Window manager
// Copyright (c) 2001 - 2002 Sean 'Shaleh' Perry <shaleh at debian.org>
// Copyright (c) 1997 - 2000, 2002 Brad Hughes <bhughes at trolltech.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

#ifdef    HAVE_CONFIG_H
#  include "../config.h"
#endif // HAVE_CONFIG_H

extern "C" {
#include <X11/Xatom.h>
#include <X11/keysym.h>

#ifdef HAVE_STRING_H
#  include <string.h>
#endif // HAVE_STRING_H

#ifdef    DEBUG
#  ifdef    HAVE_STDIO_H
#    include <stdio.h>
#  endif // HAVE_STDIO_H
#endif // DEBUG
}

#include <cstdlib>

#include "i18n.hh"
#include "blackbox.hh"
#include "GCCache.hh"
#include "Iconmenu.hh"
#include "Image.hh"
#include "Screen.hh"
#include "Toolbar.hh"
#include "Util.hh"
#include "Window.hh"
#include "Windowmenu.hh"
#include "Workspace.hh"
#include "Slit.hh"
#include "XAtom.hh"
#include "Input.hh"

using std::string;

/*
 * Initializes the class with default values/the window's set initial values.
 */
BlackboxWindow::BlackboxWindow(Blackbox *b, Window w, BScreen *s) {
  // fprintf(stderr, "BlackboxWindow size: %d bytes\n",
  // sizeof(BlackboxWindow));

#ifdef    DEBUG
  fprintf(stderr, "BlackboxWindow::BlackboxWindow(): creating 0x%lx\n", w);
#endif // DEBUG

  /*
    set timer to zero... it is initialized properly later, so we check
    if timer is zero in the destructor, and assume that the window is not
    fully constructed if timer is zero...
  */
  timer = 0;
  blackbox = b;
  client.window = w;
  screen = s;
  xatom = blackbox->getXAtom();
  input = blackbox->getInput();

  if (! validateClient()) {
    delete this;
    return;
  }

  // set the eventmask early in the game so that we make sure we get
  // all the events we are interested in
  XSetWindowAttributes attrib_set;
  attrib_set.event_mask = PropertyChangeMask | FocusChangeMask |
                          StructureNotifyMask;
  attrib_set.do_not_propagate_mask = ButtonPressMask | ButtonReleaseMask |
                                     ButtonMotionMask;
  XChangeWindowAttributes(blackbox->getXDisplay(), client.window,
                          CWEventMask|CWDontPropagate, &attrib_set);

  // fetch client size and placement
  XWindowAttributes wattrib;
  if ((! XGetWindowAttributes(blackbox->getXDisplay(),
                              client.window, &wattrib)) ||
      (! wattrib.screen) || wattrib.override_redirect) {
#ifdef    DEBUG
    fprintf(stderr,
            "BlackboxWindow::BlackboxWindow(): XGetWindowAttributes failed\n");
#endif // DEBUG

    delete this;
    return;
  }

  flags.moving = flags.resizing = flags.shaded = flags.visible =
    flags.iconic = flags.focused = flags.stuck = flags.modal =
    flags.send_focus_message = flags.shaped = flags.skip_taskbar =
    flags.skip_pager = flags.fullscreen = False;
  flags.maximized = 0;

  blackbox_attrib.workspace = window_number = BSENTINEL;

  blackbox_attrib.flags = blackbox_attrib.attrib = blackbox_attrib.stack
    = blackbox_attrib.decoration = 0l;
  blackbox_attrib.premax_x = blackbox_attrib.premax_y = 0;
  blackbox_attrib.premax_w = blackbox_attrib.premax_h = 0;

  frame.border_w = 1;
  frame.window = frame.plate = frame.title = frame.handle = None;
  frame.close_button = frame.iconify_button = frame.maximize_button = None;
  frame.right_grip = frame.left_grip = None;

  frame.ulabel_pixel = frame.flabel_pixel = frame.utitle_pixel =
  frame.ftitle_pixel = frame.uhandle_pixel = frame.fhandle_pixel =
    frame.ubutton_pixel = frame.fbutton_pixel = frame.pbutton_pixel =
    frame.uborder_pixel = frame.fborder_pixel = frame.ugrip_pixel =
    frame.fgrip_pixel = 0;
  frame.utitle = frame.ftitle = frame.uhandle = frame.fhandle = None;
  frame.ulabel = frame.flabel = frame.ubutton = frame.fbutton = None;
  frame.pbutton = frame.ugrip = frame.fgrip = decorations;

  decorations = Decor_Titlebar | Decor_Border | Decor_Handle |
                Decor_Iconify | Decor_Maximize;
  functions = Func_Resize | Func_Move | Func_Iconify | Func_Maximize;

  client.wm_hint_flags = client.normal_hint_flags = 0;
  client.transient_for = 0;

  /*
    get the initial size and location of client window (relative to the
    _root window_). This position is the reference point used with the
    window's gravity to find the window's initial position.
  */
  client.rect.setRect(wattrib.x, wattrib.y, wattrib.width, wattrib.height);
  client.old_bw = wattrib.border_width;

  windowmenu = 0;
  lastButtonPressTime = 0;

  timer = new BTimer(blackbox, this);
  timer->setTimeout(blackbox->getAutoRaiseDelay());

  if (! getBlackboxHints()) {
    getMWMHints();
    getNetWMHints();
  }

  // get size, aspect, minimum/maximum size and other hints set by the
  // client
  getWMProtocols();
  getWMHints();
  getWMNormalHints();

  if (client.initial_state == WithdrawnState) {
    screen->getSlit()->addClient(client.window);
    delete this;
    return;
  }

  if (isKDESystrayWindow()) {
    screen->addSystrayWindow(client.window);
    delete this;
    return;
  }

  frame.window = createToplevelWindow();
  frame.plate = createChildWindow(frame.window);
  associateClientWindow();

  blackbox->saveWindowSearch(frame.window, this);
  blackbox->saveWindowSearch(frame.plate, this);
  blackbox->saveWindowSearch(client.window, this);

  screen->addStrut(&client.strut);
  updateStrut();
  
  // determine if this is a transient window
  getTransientInfo();

  // determine the window's type, so we can decide its decorations and
  // functionality, or if we should not manage it at all
  getWindowType();

  // adjust the window decorations/behavior based on the window type
  switch (window_type) {
  case Type_Desktop:
    // desktop windows are not managed by us, we just make sure they stay on the
    // bottom.
    return;

  case Type_Dock:
    // docks (such as kicker) cannot be moved, and appear on all workspaces
    functions &= ~(Func_Move);
    flags.stuck = True;
  case Type_Toolbar:
  case Type_Menu:
  case Type_Utility:
    // these windows have minimal decorations, only a titlebar, and cannot
    // be resized or iconified
    decorations &= ~(Decor_Maximize | Decor_Handle | Decor_Border |
                     Decor_Iconify);
    functions &= ~(Func_Resize | Func_Maximize | Func_Iconify);
    break;

  case Type_Splash:
    // splash screens have no functionality or decorations, they are left up
    // to the application which created them
    decorations = 0;
    functions = 0;
    break;

  case Type_Dialog:
    // dialogs cannot be maximized, and don't display a handle
    decorations &= ~(Decor_Maximize | Decor_Handle);
    functions &= ~Func_Maximize;
    break;

  case Type_Normal:
    // normal windows retain all of the possible decorations and functionality
    break;
  }

  // further adjeust the window's decorations/behavior based on window sizes
  if ((client.normal_hint_flags & PMinSize) &&
      (client.normal_hint_flags & PMaxSize) &&
      client.max_width <= client.min_width &&
      client.max_height <= client.min_height) {
    decorations &= ~(Decor_Maximize | Decor_Handle);
    functions &= ~(Func_Resize | Func_Maximize);
  }
  upsize();

  setAllowedActions();

  bool place_window = True;
  if (blackbox->isStartup() || isTransient() ||
      client.normal_hint_flags & (PPosition|USPosition)) {
    setGravityOffsets();


    if (blackbox->isStartup() ||
        client.rect.intersects(screen->availableArea()))
      place_window = False;
  }

  if (decorations & Decor_Titlebar)
    createTitlebar();

  if (decorations & Decor_Handle)
    createHandle();

#ifdef    SHAPE
  if (blackbox->hasShapeExtensions() && flags.shaped) {
    configureShape();
  }
#endif // SHAPE

  grabButtons();

  positionWindows();
  decorate();

  if (decorations & Decor_Titlebar)
    XMapSubwindows(blackbox->getXDisplay(), frame.title);
  XMapSubwindows(blackbox->getXDisplay(), frame.window);

  windowmenu = new Windowmenu(this);

  if (blackbox_attrib.workspace >= screen->getWorkspaceCount())
    screen->getCurrentWorkspace()->addWindow(this, place_window);
  else
    screen->getWorkspace(blackbox_attrib.workspace)->
      addWindow(this, place_window);

  if (! place_window) {
    // don't need to call configure if we are letting the workspace
    // place the window
    configure(frame.rect.x(), frame.rect.y(),
              frame.rect.width(), frame.rect.height());
  }

  // preserve the window's initial state on first map, and its current state
  // across a restart
  if (! getState()) {
    if (client.wm_hint_flags & StateHint)
      current_state = client.initial_state;
    else
      current_state = NormalState;
  }

  // get sticky state from our parent window if we've got one
  if (isTransient() && client.transient_for != (BlackboxWindow *) ~0ul &&
      client.transient_for->isStuck() != flags.stuck)
    stick();

  if (flags.shaded) {
    flags.shaded = False;
    shade();
    
    /*
      Because the iconic'ness of shaded windows is lost, we need to set the
      state to NormalState so that shaded windows on other workspaces will not
      get shown on the first workspace.
      At this point in the life of a window, current_state should only be set
      to IconicState if the window was an *icon*, not if it was shaded.
    */
    current_state = NormalState;
  }

  if (flags.stuck) {
    flags.stuck = False;
    stick();
  }

  if (flags.maximized && (functions & Func_Maximize)) {
    remaximize();
  }

  /*
    When the window is mapped (and also when its attributes are restored), the
    current_state that was set here will be used.
    It is set to Normal if the window is to be mapped or it is set to Iconic
    if the window is to be iconified.
    *Note* that for sticky windows, the same rules apply here, they are in
    fact never set to Iconic since there is no way for us to tell if a sticky
    window was iconified previously.
  */

  setFocusFlag(False);
}


BlackboxWindow::~BlackboxWindow(void) {
#ifdef    DEBUG
  fprintf(stderr, "BlackboxWindow::~BlackboxWindow: destroying 0x%lx\n",
          client.window);
#endif // DEBUG

  if (! timer) // window not managed...
    return;

  screen->removeStrut(&client.strut);
  screen->updateAvailableArea();

  // We don't need to worry about resizing because resizing always grabs the X
  // server. This should only ever happen if using opaque moving.
  if (flags.moving)
    endMove();

  delete timer;

  delete windowmenu;

  if (client.window_group) {
    BWindowGroup *group = blackbox->searchGroup(client.window_group);
    if (group) group->removeWindow(this);
  }

  // remove ourselves from our transient_for
  if (isTransient()) {
    if (client.transient_for != (BlackboxWindow *) ~0ul) {
      client.transient_for->client.transientList.remove(this);
    }
    client.transient_for = (BlackboxWindow*) 0;
  }

  if (client.transientList.size() > 0) {
    // reset transient_for for all transients
    BlackboxWindowList::iterator it, end = client.transientList.end();
    for (it = client.transientList.begin(); it != end; ++it) {
      (*it)->client.transient_for = (BlackboxWindow*) 0;
    }
  }

  if (frame.title)
    destroyTitlebar();

  if (frame.handle)
    destroyHandle();

  if (frame.plate) {
    blackbox->removeWindowSearch(frame.plate);
    XDestroyWindow(blackbox->getXDisplay(), frame.plate);
  }

  if (frame.window) {
    blackbox->removeWindowSearch(frame.window);
    XDestroyWindow(blackbox->getXDisplay(), frame.window);
  }

  blackbox->removeWindowSearch(client.window);
}


/*
 * Creates a new top level window, with a given location, size, and border
 * width.
 * Returns: the newly created window
 */
Window BlackboxWindow::createToplevelWindow(void) {
  XSetWindowAttributes attrib_create;
  unsigned long create_mask = CWBackPixmap | CWBorderPixel | CWColormap |
                              CWOverrideRedirect | CWEventMask;

  attrib_create.background_pixmap = None;
  attrib_create.colormap = screen->getColormap();
  attrib_create.override_redirect = True;
  attrib_create.event_mask = ButtonPressMask | ButtonReleaseMask |
                             ButtonMotionMask | EnterWindowMask;

  return XCreateWindow(blackbox->getXDisplay(), screen->getRootWindow(),
                       -1, -1, 1, 1, frame.border_w, screen->getDepth(),
                       InputOutput, screen->getVisual(), create_mask,
                       &attrib_create);
}


/*
 * Creates a child window, and optionally associates a given cursor with
 * the new window.
 */
Window BlackboxWindow::createChildWindow(Window parent, Cursor cursor) {
  XSetWindowAttributes attrib_create;
  unsigned long create_mask = CWBackPixmap | CWBorderPixel |
                              CWEventMask;

  attrib_create.background_pixmap = None;
  attrib_create.event_mask = ButtonPressMask | ButtonReleaseMask |
                             ButtonMotionMask | ExposureMask;

  if (cursor) {
    create_mask |= CWCursor;
    attrib_create.cursor = cursor;
  }

  return XCreateWindow(blackbox->getXDisplay(), parent, 0, 0, 1, 1, 0,
                       screen->getDepth(), InputOutput, screen->getVisual(),
                       create_mask, &attrib_create);
}


void BlackboxWindow::associateClientWindow(void) {
  XSetWindowBorderWidth(blackbox->getXDisplay(), client.window, 0);
  getWMName();
  getWMIconName();

  XChangeSaveSet(blackbox->getXDisplay(), client.window, SetModeInsert);

  XSelectInput(blackbox->getXDisplay(), frame.plate, SubstructureRedirectMask);

  XGrabServer(blackbox->getXDisplay());
  XSelectInput(blackbox->getXDisplay(), client.window, NoEventMask);
  XReparentWindow(blackbox->getXDisplay(), client.window, frame.plate, 0, 0);
  XSelectInput(blackbox->getXDisplay(), client.window,
               PropertyChangeMask | FocusChangeMask | StructureNotifyMask);
  XUngrabServer(blackbox->getXDisplay());

  XRaiseWindow(blackbox->getXDisplay(), frame.plate);
  XMapSubwindows(blackbox->getXDisplay(), frame.plate);


#ifdef    SHAPE
  if (blackbox->hasShapeExtensions()) {
    XShapeSelectInput(blackbox->getXDisplay(), client.window,
                      ShapeNotifyMask);

    Bool shaped = False;
    int foo;
    unsigned int ufoo;

    XShapeQueryExtents(blackbox->getXDisplay(), client.window, &shaped,
                       &foo, &foo, &ufoo, &ufoo, &foo, &foo, &foo,
                       &ufoo, &ufoo);
    flags.shaped = shaped;
  }
#endif // SHAPE
}


void BlackboxWindow::decorate(void) {
  BTexture* texture;

  texture = &(screen->getWindowStyle()->b_focus);
  frame.fbutton = texture->render(frame.button_w, frame.button_w,
                                  frame.fbutton);
  if (! frame.fbutton)
    frame.fbutton_pixel = texture->color().pixel();

  texture = &(screen->getWindowStyle()->b_unfocus);
  frame.ubutton = texture->render(frame.button_w, frame.button_w,
                                  frame.ubutton);
  if (! frame.ubutton)
    frame.ubutton_pixel = texture->color().pixel();

  texture = &(screen->getWindowStyle()->b_pressed);
  frame.pbutton = texture->render(frame.button_w, frame.button_w,
                                  frame.pbutton);
  if (! frame.pbutton)
    frame.pbutton_pixel = texture->color().pixel();

  if (decorations & Decor_Titlebar) {
    texture = &(screen->getWindowStyle()->t_focus);
    frame.ftitle = texture->render(frame.inside_w, frame.title_h,
                                   frame.ftitle);
    if (! frame.ftitle)
      frame.ftitle_pixel = texture->color().pixel();

    texture = &(screen->getWindowStyle()->t_unfocus);
    frame.utitle = texture->render(frame.inside_w, frame.title_h,
                                   frame.utitle);
    if (! frame.utitle)
      frame.utitle_pixel = texture->color().pixel();

    XSetWindowBorder(blackbox->getXDisplay(), frame.title,
                     screen->getBorderColor()->pixel());

    decorateLabel();
  }

  if (decorations & Decor_Border) {
    frame.fborder_pixel = screen->getWindowStyle()->f_focus.pixel();
    frame.uborder_pixel = screen->getWindowStyle()->f_unfocus.pixel();
    blackbox_attrib.flags |= AttribDecoration;
    blackbox_attrib.decoration = DecorNormal;
  } else {
    blackbox_attrib.flags |= AttribDecoration;
    blackbox_attrib.decoration = DecorNone;
  }

  if (decorations & Decor_Handle) {
    texture = &(screen->getWindowStyle()->h_focus);
    frame.fhandle = texture->render(frame.inside_w, frame.handle_h,
                                    frame.fhandle);
    if (! frame.fhandle)
      frame.fhandle_pixel = texture->color().pixel();

    texture = &(screen->getWindowStyle()->h_unfocus);
    frame.uhandle = texture->render(frame.inside_w, frame.handle_h,
                                    frame.uhandle);
    if (! frame.uhandle)
      frame.uhandle_pixel = texture->color().pixel();

    texture = &(screen->getWindowStyle()->g_focus);
    frame.fgrip = texture->render(frame.grip_w, frame.handle_h, frame.fgrip);
    if (! frame.fgrip)
      frame.fgrip_pixel = texture->color().pixel();

    texture = &(screen->getWindowStyle()->g_unfocus);
    frame.ugrip = texture->render(frame.grip_w, frame.handle_h, frame.ugrip);
    if (! frame.ugrip)
      frame.ugrip_pixel = texture->color().pixel();

    XSetWindowBorder(blackbox->getXDisplay(), frame.handle,
                     screen->getBorderColor()->pixel());
    XSetWindowBorder(blackbox->getXDisplay(), frame.left_grip,
                     screen->getBorderColor()->pixel());
    XSetWindowBorder(blackbox->getXDisplay(), frame.right_grip,
                     screen->getBorderColor()->pixel());
  }

  XSetWindowBorder(blackbox->getXDisplay(), frame.window,
                   screen->getBorderColor()->pixel());
}


void BlackboxWindow::decorateLabel(void) {
  BTexture *texture;

  texture = &(screen->getWindowStyle()->l_focus);
  frame.flabel = texture->render(frame.label_w, frame.label_h, frame.flabel);
  if (! frame.flabel)
    frame.flabel_pixel = texture->color().pixel();

  texture = &(screen->getWindowStyle()->l_unfocus);
  frame.ulabel = texture->render(frame.label_w, frame.label_h, frame.ulabel);
  if (! frame.ulabel)
    frame.ulabel_pixel = texture->color().pixel();
}


void BlackboxWindow::createHandle(void) {
  frame.handle = createChildWindow(frame.window);
  blackbox->saveWindowSearch(frame.handle, this);

  frame.left_grip =
    createChildWindow(frame.handle, blackbox->getLowerLeftAngleCursor());
  blackbox->saveWindowSearch(frame.left_grip, this);

  frame.right_grip =
    createChildWindow(frame.handle, blackbox->getLowerRightAngleCursor());
  blackbox->saveWindowSearch(frame.right_grip, this);
}


void BlackboxWindow::destroyHandle(void) {
  if (frame.fhandle)
    screen->getImageControl()->removeImage(frame.fhandle);

  if (frame.uhandle)
    screen->getImageControl()->removeImage(frame.uhandle);

  if (frame.fgrip)
    screen->getImageControl()->removeImage(frame.fgrip);

  if (frame.ugrip)
    screen->getImageControl()->removeImage(frame.ugrip);

  blackbox->removeWindowSearch(frame.left_grip);
  blackbox->removeWindowSearch(frame.right_grip);

  XDestroyWindow(blackbox->getXDisplay(), frame.left_grip);
  XDestroyWindow(blackbox->getXDisplay(), frame.right_grip);
  frame.left_grip = frame.right_grip = None;

  blackbox->removeWindowSearch(frame.handle);
  XDestroyWindow(blackbox->getXDisplay(), frame.handle);
  frame.handle = None;
}


void BlackboxWindow::createTitlebar(void) {
  frame.title = createChildWindow(frame.window);
  frame.label = createChildWindow(frame.title);
  blackbox->saveWindowSearch(frame.title, this);
  blackbox->saveWindowSearch(frame.label, this);

  if (decorations & Decor_Iconify) createIconifyButton();
  if (decorations & Decor_Maximize) createMaximizeButton();
  if (decorations & Decor_Close) createCloseButton();
}


void BlackboxWindow::destroyTitlebar(void) {
  if (frame.close_button)
    destroyCloseButton();

  if (frame.iconify_button)
    destroyIconifyButton();

  if (frame.maximize_button)
    destroyMaximizeButton();

  if (frame.ftitle)
    screen->getImageControl()->removeImage(frame.ftitle);

  if (frame.utitle)
    screen->getImageControl()->removeImage(frame.utitle);

  if (frame.flabel)
    screen->getImageControl()->removeImage(frame.flabel);

  if( frame.ulabel)
    screen->getImageControl()->removeImage(frame.ulabel);

  if (frame.fbutton)
    screen->getImageControl()->removeImage(frame.fbutton);

  if (frame.ubutton)
    screen->getImageControl()->removeImage(frame.ubutton);

  if (frame.pbutton)
    screen->getImageControl()->removeImage(frame.pbutton);

  blackbox->removeWindowSearch(frame.title);
  blackbox->removeWindowSearch(frame.label);

  XDestroyWindow(blackbox->getXDisplay(), frame.label);
  XDestroyWindow(blackbox->getXDisplay(), frame.title);
  frame.title = frame.label = None;
}


void BlackboxWindow::createCloseButton(void) {
  if (frame.title != None) {
    frame.close_button = createChildWindow(frame.title);
    blackbox->saveWindowSearch(frame.close_button, this);
  }
}


void BlackboxWindow::destroyCloseButton(void) {
  blackbox->removeWindowSearch(frame.close_button);
  XDestroyWindow(blackbox->getXDisplay(), frame.close_button);
  frame.close_button = None;
}


void BlackboxWindow::createIconifyButton(void) {
  if (frame.title != None) {
    frame.iconify_button = createChildWindow(frame.title);
    blackbox->saveWindowSearch(frame.iconify_button, this);
  }
}


void BlackboxWindow::destroyIconifyButton(void) {
  blackbox->removeWindowSearch(frame.iconify_button);
  XDestroyWindow(blackbox->getXDisplay(), frame.iconify_button);
  frame.iconify_button = None;
}


void BlackboxWindow::createMaximizeButton(void) {
  if (frame.title != None) {
    frame.maximize_button = createChildWindow(frame.title);
    blackbox->saveWindowSearch(frame.maximize_button, this);
  }
}


void BlackboxWindow::destroyMaximizeButton(void) {
  blackbox->removeWindowSearch(frame.maximize_button);
  XDestroyWindow(blackbox->getXDisplay(), frame.maximize_button);
  frame.maximize_button = None;
}


void BlackboxWindow::positionButtons(bool redecorate_label) {
  string layout = blackbox->getTitlebarLayout();
  string parsed;

  bool hasclose, hasiconify, hasmaximize, haslabel;
  hasclose = hasiconify = hasmaximize = haslabel = false;

  string::const_iterator it, end;
  for (it = layout.begin(), end = layout.end(); it != end; ++it) {
    switch(*it) {
    case 'C':
      if (! hasclose && (decorations & Decor_Close)) {
        hasclose = true;
        parsed += *it;
      }
      break;
    case 'I':
      if (! hasiconify && (decorations & Decor_Iconify)) {
        hasiconify = true;
        parsed += *it;
      }
      break;
    case 'M':
      if (! hasmaximize && (decorations & Decor_Maximize)) {
        hasmaximize = true;
        parsed += *it;
      }
      break;
    case 'L':
      if (! haslabel) {
        haslabel = true;
        parsed += *it;
      }
    }
  }
  if (! hasclose && frame.close_button)
    destroyCloseButton();
  if (! hasiconify && frame.iconify_button)
    destroyIconifyButton();
  if (! hasmaximize && frame.maximize_button)
    destroyMaximizeButton();
  if (! haslabel)
    parsed += 'L';      // require that the label be in the layout

  const unsigned int bsep = frame.bevel_w + 1;  // separation between elements
  const unsigned int by = frame.bevel_w + 1;
  const unsigned int ty = frame.bevel_w;

  frame.label_w = frame.inside_w - bsep * 2 -
    (frame.button_w + bsep) * (parsed.size() - 1);

  unsigned int x = bsep;
  for (it = parsed.begin(), end = parsed.end(); it != end; ++it) {
    switch(*it) {
    case 'C':
      if (! frame.close_button) createCloseButton();
      XMoveResizeWindow(blackbox->getXDisplay(), frame.close_button, x, by,
                        frame.button_w, frame.button_w);
      x += frame.button_w + bsep;
      break;
    case 'I':
      if (! frame.iconify_button) createIconifyButton();
      XMoveResizeWindow(blackbox->getXDisplay(), frame.iconify_button, x, by,
                        frame.button_w, frame.button_w);
      x += frame.button_w + bsep;
      break;
    case 'M':
      if (! frame.maximize_button) createMaximizeButton();
      XMoveResizeWindow(blackbox->getXDisplay(), frame.maximize_button, x, by,
                        frame.button_w, frame.button_w);
      x += frame.button_w + bsep;
      break;
    case 'L':
      XMoveResizeWindow(blackbox->getXDisplay(), frame.label, x, ty,
                        frame.label_w, frame.label_h);
      x += frame.label_w + bsep;
      break;
    }
  }

  if (redecorate_label) decorateLabel();
  redrawLabel();
  redrawAllButtons();
}


void BlackboxWindow::reconfigure(void) {
  upsize();

  client.rect.setPos(frame.rect.left() + frame.margin.left,
                     frame.rect.top() + frame.margin.top);

  positionWindows();
  decorate();

  XClearWindow(blackbox->getXDisplay(), frame.window);
  setFocusFlag(flags.focused);

  configure(frame.rect.x(), frame.rect.y(),
            frame.rect.width(), frame.rect.height());

  if (windowmenu) {
    windowmenu->move(windowmenu->getX(), frame.rect.y() + frame.title_h);
    windowmenu->reconfigure();
  }
}


void BlackboxWindow::positionWindows(void) {
  XMoveResizeWindow(blackbox->getXDisplay(), frame.window,
                    frame.rect.x(), frame.rect.y(), frame.inside_w,
                    (flags.shaded) ? frame.title_h : frame.inside_h);
  XSetWindowBorderWidth(blackbox->getXDisplay(), frame.window, frame.border_w);
  XSetWindowBorderWidth(blackbox->getXDisplay(), frame.plate,
                        frame.mwm_border_w);
  XMoveResizeWindow(blackbox->getXDisplay(), frame.plate,
                    frame.margin.left - frame.mwm_border_w - frame.border_w,
                    frame.margin.top - frame.mwm_border_w - frame.border_w,
                    client.rect.width(), client.rect.height());
  XMoveResizeWindow(blackbox->getXDisplay(), client.window,
                    0, 0, client.rect.width(), client.rect.height());

  if (decorations & Decor_Titlebar) {
    if (frame.title == None) createTitlebar();

    XSetWindowBorderWidth(blackbox->getXDisplay(), frame.title,
                          frame.border_w);
    XMoveResizeWindow(blackbox->getXDisplay(), frame.title, -frame.border_w,
                      -frame.border_w, frame.inside_w, frame.title_h);

    positionButtons();
    XMapSubwindows(blackbox->getXDisplay(), frame.title);
    XMapWindow(blackbox->getXDisplay(), frame.title);
  } else if (frame.title) {
    destroyTitlebar();
  }
  if (decorations & Decor_Handle) {
    if (frame.handle == None) createHandle();
    XSetWindowBorderWidth(blackbox->getXDisplay(), frame.handle,
                          frame.border_w);
    XSetWindowBorderWidth(blackbox->getXDisplay(), frame.left_grip,
                          frame.border_w);
    XSetWindowBorderWidth(blackbox->getXDisplay(), frame.right_grip,
                          frame.border_w);

    // use client.rect here so the value is correct even if shaded
    XMoveResizeWindow(blackbox->getXDisplay(), frame.handle,
                      -frame.border_w,
                      client.rect.height() + frame.margin.top +
                      frame.mwm_border_w - frame.border_w,
                      frame.inside_w, frame.handle_h);
    XMoveResizeWindow(blackbox->getXDisplay(), frame.left_grip,
                      -frame.border_w, -frame.border_w,
                      frame.grip_w, frame.handle_h);
    XMoveResizeWindow(blackbox->getXDisplay(), frame.right_grip,
                      frame.inside_w - frame.grip_w - frame.border_w,
                      -frame.border_w, frame.grip_w, frame.handle_h);

    XMapSubwindows(blackbox->getXDisplay(), frame.handle);
    XMapWindow(blackbox->getXDisplay(), frame.handle);
  } else if (frame.handle) {
    destroyHandle();
  }
}


void BlackboxWindow::updateStrut(void) {
  unsigned long num = 4;
  unsigned long *data;
  if (! xatom->getValue(client.window, XAtom::net_wm_strut, XAtom::cardinal,
                        num, &data))
    return;
 
  if (num == 4) {
    client.strut.left = data[0];
    client.strut.right = data[1];
    client.strut.top = data[2];
    client.strut.bottom = data[3];

    screen->updateAvailableArea();
  }

  delete [] data;
}


void BlackboxWindow::getWindowType(void) {
  unsigned long val;
  if (xatom->getValue(client.window, XAtom::net_wm_window_type, XAtom::atom,
                      val)) {
    if (val == xatom->getAtom(XAtom::net_wm_window_type_desktop))
      window_type = Type_Desktop;
    else if (val == xatom->getAtom(XAtom::net_wm_window_type_dock))
      window_type = Type_Dock;
    else if (val == xatom->getAtom(XAtom::net_wm_window_type_toolbar))
      window_type = Type_Toolbar;
    else if (val == xatom->getAtom(XAtom::net_wm_window_type_menu))
      window_type = Type_Menu;
    else if (val == xatom->getAtom(XAtom::net_wm_window_type_utility))
      window_type = Type_Utility;
    else if (val == xatom->getAtom(XAtom::net_wm_window_type_splash))
      window_type = Type_Splash;
    else if (val == xatom->getAtom(XAtom::net_wm_window_type_dialog))
      window_type = Type_Dialog;
    else //if (val[0] == xatom->getAtom(XAtom::net_wm_window_type_normal))
      window_type = Type_Normal;
    return;
  }

  /*
   * the window type hint was not set, which means we either classify ourself
   * as a normal window or a dialog, depending on if we are a transient.
   */
  if (isTransient())
    window_type = Type_Dialog;

  window_type = Type_Normal;
}


void BlackboxWindow::getWMName(void) {
  if (xatom->getValue(client.window, XAtom::net_wm_name,
                      XAtom::utf8, client.title) &&
      !client.title.empty()) {
    xatom->eraseValue(client.window, XAtom::net_wm_visible_name);
    return;
  }
  //fall through to using WM_NAME
  if (xatom->getValue(client.window, XAtom::wm_name, XAtom::ansi, client.title)
      && !client.title.empty()) {
    xatom->eraseValue(client.window, XAtom::net_wm_visible_name);
    return;
  }
  // fall back to an internal default
  client.title = i18n(WindowSet, WindowUnnamed, "Unnamed");
  xatom->setValue(client.window, XAtom::net_wm_visible_name, XAtom::utf8,
                  client.title);
}


void BlackboxWindow::getWMIconName(void) {
  if (xatom->getValue(client.window, XAtom::net_wm_icon_name,
                      XAtom::utf8, client.icon_title) && 
      !client.icon_title.empty()) {
    xatom->eraseValue(client.window, XAtom::net_wm_visible_icon_name);
    return;
  }
  //fall through to using WM_ICON_NAME
  if (xatom->getValue(client.window, XAtom::wm_icon_name, XAtom::ansi,
                      client.icon_title) && 
      !client.icon_title.empty()) {
    xatom->eraseValue(client.window, XAtom::net_wm_visible_icon_name);
    return;
  }
  // fall back to using the main name
  client.icon_title = client.title;
  xatom->setValue(client.window, XAtom::net_wm_visible_icon_name, XAtom::utf8,
                  client.icon_title);
}


/*
 * Retrieve which WM Protocols are supported by the client window.
 * If the WM_DELETE_WINDOW protocol is supported, add the close button to the
 * window's decorations and allow the close behavior.
 * If the WM_TAKE_FOCUS protocol is supported, save a value that indicates
 * this.
 */
void BlackboxWindow::getWMProtocols(void) {
  Atom *proto;
  int num_return = 0;

  if (XGetWMProtocols(blackbox->getXDisplay(), client.window,
                      &proto, &num_return)) {
    for (int i = 0; i < num_return; ++i) {
      if (proto[i] == xatom->getAtom(XAtom::wm_delete_window)) {
        decorations |= Decor_Close;
        functions |= Func_Close;
      } else if (proto[i] == xatom->getAtom(XAtom::wm_take_focus))
        flags.send_focus_message = True;
      else if (proto[i] == xatom->getAtom(XAtom::blackbox_structure_messages))
        screen->addNetizen(new Netizen(screen, client.window));
    }

    XFree(proto);
  }
}


/*
 * Gets the value of the WM_HINTS property.
 * If the property is not set, then use a set of default values.
 */
void BlackboxWindow::getWMHints(void) {
  focus_mode = F_Passive;
  client.initial_state = NormalState;

  // remove from current window group
  if (client.window_group) {
    BWindowGroup *group = blackbox->searchGroup(client.window_group);
    if (group) group->removeWindow(this);
  }
  client.window_group = None;

  XWMHints *wmhint = XGetWMHints(blackbox->getXDisplay(), client.window);
  if (! wmhint) {
    return;
  }

  if (wmhint->flags & InputHint) {
    if (wmhint->input == True) {
      if (flags.send_focus_message)
        focus_mode = F_LocallyActive;
    } else {
      if (flags.send_focus_message)
        focus_mode = F_GloballyActive;
      else
        focus_mode = F_NoInput;
    }
  }

  if (wmhint->flags & StateHint)
    client.initial_state = wmhint->initial_state;

  if (wmhint->flags & WindowGroupHint) {
    client.window_group = wmhint->window_group;

    // add window to the appropriate group
    BWindowGroup *group = blackbox->searchGroup(client.window_group);
    if (! group) // no group found, create it!
      group = new BWindowGroup(blackbox, client.window_group);
    group->addWindow(this);
  }

  client.wm_hint_flags = wmhint->flags;
  XFree(wmhint);
}


/*
 * Gets the value of the WM_NORMAL_HINTS property.
 * If the property is not set, then use a set of default values.
 */
void BlackboxWindow::getWMNormalHints(void) {
  long icccm_mask;
  XSizeHints sizehint;

  client.min_width = client.min_height =
    client.width_inc = client.height_inc = 1;
  client.base_width = client.base_height = 0;

  /*
    use the full screen, not the strut modified size. otherwise when the
    availableArea changes max_width/height will be incorrect and lead to odd
    rendering bugs.
  */
  const Rect& screen_area = screen->getRect();
  client.max_width = screen_area.width();

  client.max_height = screen_area.height();
  client.min_aspect_x = client.min_aspect_y =
    client.max_aspect_x = client.max_aspect_y = 1;
  client.win_gravity = NorthWestGravity;

  if (! XGetWMNormalHints(blackbox->getXDisplay(), client.window,
                          &sizehint, &icccm_mask))
    return;

  client.normal_hint_flags = sizehint.flags;

  if (sizehint.flags & PMinSize) {
    client.min_width = sizehint.min_width;
    client.min_height = sizehint.min_height;
  }

  if (sizehint.flags & PMaxSize) {
    client.max_width = sizehint.max_width;
    client.max_height = sizehint.max_height;
  }

  if (sizehint.flags & PResizeInc) {
    client.width_inc = sizehint.width_inc;
    client.height_inc = sizehint.height_inc;
  }

  if (sizehint.flags & PAspect) {
    client.min_aspect_x = sizehint.min_aspect.x;
    client.min_aspect_y = sizehint.min_aspect.y;
    client.max_aspect_x = sizehint.max_aspect.x;
    client.max_aspect_y = sizehint.max_aspect.y;
  }

  if (sizehint.flags & PBaseSize) {
    client.base_width = sizehint.base_width;
    client.base_height = sizehint.base_height;
  }

  if (sizehint.flags & PWinGravity)
    client.win_gravity = sizehint.win_gravity;
}


/*
 * Gets the NETWM hints for the class' contained window.
 */
void BlackboxWindow::getNetWMHints(void) {
  unsigned long workspace;

  if (xatom->getValue(client.window, XAtom::net_wm_desktop, XAtom::cardinal,
                      workspace)) {
    if (workspace == 0xffffffff)
      flags.stuck = True;
    else
      blackbox_attrib.workspace = workspace;
  }

  unsigned long *state;
  unsigned long num = (unsigned) -1;
  if (xatom->getValue(client.window, XAtom::net_wm_state, XAtom::atom,
                      num, &state)) {
    bool vert = False,
         horz = False;
    for (unsigned long i = 0; i < num; ++i) {
      if (state[i] == xatom->getAtom(XAtom::net_wm_state_modal))
        flags.modal = True;
      else if (state[i] == xatom->getAtom(XAtom::net_wm_state_shaded))
        flags.shaded = True;
      else if (state[i] == xatom->getAtom(XAtom::net_wm_state_skip_taskbar))
        flags.skip_taskbar = True;
      else if (state[i] == xatom->getAtom(XAtom::net_wm_state_skip_pager))
        flags.skip_pager = True;
      else if (state[i] == xatom->getAtom(XAtom::net_wm_state_fullscreen))
        flags.fullscreen = True;
      else if (state[i] == xatom->getAtom(XAtom::net_wm_state_hidden))
        setState(IconicState);
      else if (state[i] == xatom->getAtom(XAtom::net_wm_state_maximized_vert))
        vert = True;
      else if (state[i] == xatom->getAtom(XAtom::net_wm_state_maximized_horz))
        horz = True;
    }
    if (vert && horz)
      flags.maximized = 1;
    else if (vert)
      flags.maximized = 2;
    else if (horz)
      flags.maximized = 3;

    delete [] state;
  }
}


/*
 * Gets the MWM hints for the class' contained window.
 * This is used while initializing the window to its first state, and not
 * thereafter.
 * Returns: true if the MWM hints are successfully retreived and applied;
 * false if they are not.
 */
void BlackboxWindow::getMWMHints(void) {
  unsigned long num;
  MwmHints *mwm_hint;

  num = PropMwmHintsElements;
  if (! xatom->getValue(client.window, XAtom::motif_wm_hints,
                        XAtom::motif_wm_hints, num,
                        (unsigned long **)&mwm_hint) ||
      num < PropMwmHintsElements)
    return;

  if (mwm_hint->flags & MwmHintsDecorations) {
    if (mwm_hint->decorations & MwmDecorAll) {
      decorations = Decor_Titlebar | Decor_Handle | Decor_Border |
                    Decor_Iconify | Decor_Maximize | Decor_Close;
    } else {
      decorations = 0;

      if (mwm_hint->decorations & MwmDecorBorder)
        decorations |= Decor_Border;
      if (mwm_hint->decorations & MwmDecorHandle)
        decorations |= Decor_Handle;
      if (mwm_hint->decorations & MwmDecorTitle)
        decorations |= Decor_Titlebar;
      if (mwm_hint->decorations & MwmDecorIconify)
        decorations |= Decor_Iconify;
      if (mwm_hint->decorations & MwmDecorMaximize)
        decorations |= Decor_Maximize;
    }
  }

  if (mwm_hint->flags & MwmHintsFunctions) {
    if (mwm_hint->functions & MwmFuncAll) {
      functions = Func_Resize | Func_Move | Func_Iconify | Func_Maximize |
                  Func_Close;
    } else {
      functions = 0;

      if (mwm_hint->functions & MwmFuncResize)
        functions |= Func_Resize;
      if (mwm_hint->functions & MwmFuncMove)
        functions |= Func_Move;
      if (mwm_hint->functions & MwmFuncIconify)
        functions |= Func_Iconify;
      if (mwm_hint->functions & MwmFuncMaximize)
        functions |= Func_Maximize;
      if (mwm_hint->functions & MwmFuncClose)
        functions |= Func_Close;
    }
  }
  delete mwm_hint;
}


/*
 * Gets the blackbox hints from the class' contained window.
 * This is used while initializing the window to its first state, and not
 * thereafter.
 * Returns: true if the hints are successfully retreived and applied; false if
 * they are not.
 */
bool BlackboxWindow::getBlackboxHints(void) {
  unsigned long num;
  BlackboxHints *blackbox_hint;

  num = PropBlackboxHintsElements;
  if (! xatom->getValue(client.window, XAtom::blackbox_hints,
                        XAtom::blackbox_hints, num,
                        (unsigned long **)&blackbox_hint) ||
      num < PropBlackboxHintsElements)
    return False;

  if (blackbox_hint->flags & AttribShaded)
    flags.shaded = (blackbox_hint->attrib & AttribShaded);

  if ((blackbox_hint->flags & AttribMaxHoriz) &&
      (blackbox_hint->flags & AttribMaxVert))
    flags.maximized = (blackbox_hint->attrib &
                       (AttribMaxHoriz | AttribMaxVert)) ? 1 : 0;
  else if (blackbox_hint->flags & AttribMaxVert)
    flags.maximized = (blackbox_hint->attrib & AttribMaxVert) ? 2 : 0;
  else if (blackbox_hint->flags & AttribMaxHoriz)
    flags.maximized = (blackbox_hint->attrib & AttribMaxHoriz) ? 3 : 0;

  if (blackbox_hint->flags & AttribOmnipresent)
    flags.stuck = (blackbox_hint->attrib & AttribOmnipresent);

  if (blackbox_hint->flags & AttribWorkspace)
    blackbox_attrib.workspace = blackbox_hint->workspace;

  // if (blackbox_hint->flags & AttribStack)
  //   don't yet have always on top/bottom for blackbox yet... working
  //   on that

  if (blackbox_hint->flags & AttribDecoration) {
    switch (blackbox_hint->decoration) {
    case DecorNone:
      // clear all decorations except close
      decorations &= Decor_Close;
      // clear all functions except close
      functions &= Func_Close;

      break;

    case DecorTiny:
      decorations |= Decor_Titlebar | Decor_Iconify;
      decorations &= ~(Decor_Border | Decor_Handle | Decor_Maximize);
      functions |= Func_Move | Func_Iconify;
      functions &= ~(Func_Resize | Func_Maximize);

      break;

    case DecorTool:
      decorations |= Decor_Titlebar;
      decorations &= ~(Decor_Iconify | Decor_Border | Decor_Handle);
      functions |= Func_Move;
      functions &= ~(Func_Resize | Func_Maximize | Func_Iconify);

      break;

    case DecorNormal:
    default:
      decorations |= Decor_Titlebar | Decor_Border | Decor_Handle |
                     Decor_Iconify | Decor_Maximize;
      functions |= Func_Resize | Func_Move | Func_Iconify | Func_Maximize;

      break;
    }

    reconfigure();
  }
  
  delete blackbox_hint;

  return True;
}


void BlackboxWindow::getTransientInfo(void) {
  if (client.transient_for &&
      client.transient_for != (BlackboxWindow *) ~0ul) {
    // the transient for hint was removed, so we need to tell our
    // previous transient_for that we are going away
    client.transient_for->client.transientList.remove(this);
  }

  // we have no transient_for until we find a new one
  client.transient_for = 0;

  Window trans_for;
  if (! XGetTransientForHint(blackbox->getXDisplay(), client.window,
                             &trans_for)) {
    // transient_for hint not set
    return;
  }

  if (trans_for == client.window) {
    // wierd client... treat this window as a normal window
    return;
  }

  if (trans_for == None || trans_for == screen->getRootWindow()) {
    // this is an undocumented interpretation of the ICCCM. a transient
    // associated with None/Root/itself is assumed to be a modal root
    // transient.  we don't support the concept of a global transient,
    // so we just associate this transient with nothing, and perhaps
    // we will add support later for global modality.
    client.transient_for = (BlackboxWindow *) ~0ul;
    flags.modal = True;
    return;
  }

  client.transient_for = blackbox->searchWindow(trans_for);
  if (! client.transient_for &&
      client.window_group && trans_for == client.window_group) {
    // no direct transient_for, perhaps this is a group transient?
    BWindowGroup *group = blackbox->searchGroup(client.window_group);
    if (group) client.transient_for = group->find(screen);
  }

  if (! client.transient_for || client.transient_for == this) {
    // no transient_for found, or we have a wierd client that wants to be
    // a transient for itself, so we treat this window as a normal window
    client.transient_for = (BlackboxWindow*) 0;
    return;
  }

  // register ourselves with our new transient_for
  client.transient_for->client.transientList.push_back(this);
  flags.stuck = client.transient_for->flags.stuck;
}


bool BlackboxWindow::isKDESystrayWindow(void) {
  Window systray;
  if (xatom->getValue(client.window, XAtom::kde_net_wm_system_tray_window_for,
                      XAtom::window, systray) && systray)
    return True;
  return False;
}


BlackboxWindow *BlackboxWindow::getTransientFor(void) const {
  if (client.transient_for &&
      client.transient_for != (BlackboxWindow*) ~0ul)
    return client.transient_for;
  return 0;
}


void BlackboxWindow::configure(int dx, int dy,
                               unsigned int dw, unsigned int dh) {
  bool send_event = (frame.rect.x() != dx || frame.rect.y() != dy);

  if ((dw != frame.rect.width()) || (dh != frame.rect.height())) {
    frame.rect.setRect(dx, dy, dw, dh);
    frame.inside_w = frame.rect.width() - (frame.border_w * 2);
    frame.inside_h = frame.rect.height() - (frame.border_w * 2);

    if (frame.rect.right() <= 0 || frame.rect.bottom() <= 0)
      frame.rect.setPos(0, 0);

    client.rect.setCoords(frame.rect.left() + frame.margin.left,
                          frame.rect.top() + frame.margin.top,
                          frame.rect.right() - frame.margin.right,
                          frame.rect.bottom() - frame.margin.bottom);

#ifdef    SHAPE
    if (blackbox->hasShapeExtensions() && flags.shaped) {
      configureShape();
    }
#endif // SHAPE

    positionWindows();
    decorate();
    setFocusFlag(flags.focused);
    redrawAllButtons();
  } else {
    frame.rect.setPos(dx, dy);

    XMoveWindow(blackbox->getXDisplay(), frame.window,
                frame.rect.x(), frame.rect.y());

    if (! flags.moving) send_event = True;
  }

  if (send_event && ! flags.moving) {
    client.rect.setPos(frame.rect.left() + frame.margin.left,
                       frame.rect.top() + frame.margin.top);

    XEvent event;
    event.type = ConfigureNotify;

    event.xconfigure.display = blackbox->getXDisplay();
    event.xconfigure.event = client.window;
    event.xconfigure.window = client.window;
    event.xconfigure.x = client.rect.x();
    event.xconfigure.y = client.rect.y();
    event.xconfigure.width = client.rect.width();
    event.xconfigure.height = client.rect.height();
    event.xconfigure.border_width = client.old_bw;
    event.xconfigure.above = frame.window;
    event.xconfigure.override_redirect = False;

    XSendEvent(blackbox->getXDisplay(), client.window, True,
               NoEventMask, &event);

    screen->updateNetizenConfigNotify(&event);
  }
}


#ifdef SHAPE
void BlackboxWindow::configureShape(void) {
  XShapeCombineShape(blackbox->getXDisplay(), frame.window, ShapeBounding,
                     frame.margin.left - frame.border_w,
                     frame.margin.top - frame.border_w,
                     client.window, ShapeBounding, ShapeSet);

  int num = 0;
  XRectangle xrect[2];

  if (decorations & Decor_Titlebar) {
    xrect[0].x = xrect[0].y = -frame.border_w;
    xrect[0].width = frame.rect.width();
    xrect[0].height = frame.title_h + (frame.border_w * 2);
    ++num;
  }

  if (decorations & Decor_Handle) {
    xrect[1].x = -frame.border_w;
    xrect[1].y = frame.rect.height() - frame.margin.bottom +
                 frame.mwm_border_w - frame.border_w;
    xrect[1].width = frame.rect.width();
    xrect[1].height = frame.handle_h + (frame.border_w * 2);
    ++num;
  }

  XShapeCombineRectangles(blackbox->getXDisplay(), frame.window,
                          ShapeBounding, 0, 0, xrect, num,
                          ShapeUnion, Unsorted);
}
#endif // SHAPE


bool BlackboxWindow::setInputFocus(void) {
  if (flags.focused) return True;

  assert(! flags.iconic);

  // if the window is not visible, mark the window as wanting focus rather
  // than give it focus.
  if (! flags.visible) {
    Workspace *wkspc = screen->getWorkspace(blackbox_attrib.workspace);
    wkspc->setLastFocusedWindow(this);
    return True;
  }

  if (! client.rect.intersects(screen->getRect())) {
    // client is outside the screen, move it to the center
    configure((screen->getWidth() - frame.rect.width()) / 2,
              (screen->getHeight() - frame.rect.height()) / 2,
              frame.rect.width(), frame.rect.height());
  }

  if (client.transientList.size() > 0) {
    // transfer focus to any modal transients
    BlackboxWindowList::iterator it, end = client.transientList.end();
    for (it = client.transientList.begin(); it != end; ++it) {
      if ((*it)->flags.modal) return (*it)->setInputFocus();
    }
  }

  bool ret = True;
  if (focus_mode == F_LocallyActive || focus_mode == F_Passive) {
    XSetInputFocus(blackbox->getXDisplay(), client.window,
                   RevertToPointerRoot, CurrentTime);

    blackbox->setFocusedWindow(this);
  } else {
    /* we could set the focus to none, since the window doesn't accept focus,
     * but we shouldn't set focus to nothing since this would surely make
     * someone angry
     */
    ret = False;
  }

  if (flags.send_focus_message) {
    XEvent ce;
    ce.xclient.type = ClientMessage;
    ce.xclient.message_type = xatom->getAtom(XAtom::wm_protocols);
    ce.xclient.display = blackbox->getXDisplay();
    ce.xclient.window = client.window;
    ce.xclient.format = 32;
    ce.xclient.data.l[0] = xatom->getAtom(XAtom::wm_take_focus);
    ce.xclient.data.l[1] = blackbox->getLastTime();
    ce.xclient.data.l[2] = 0l;
    ce.xclient.data.l[3] = 0l;
    ce.xclient.data.l[4] = 0l;
    XSendEvent(blackbox->getXDisplay(), client.window, False,
               NoEventMask, &ce);
  }

  return ret;
}


void BlackboxWindow::iconify(void) {
  if (flags.iconic) return;

  // We don't need to worry about resizing because resizing always grabs the X
  // server. This should only ever happen if using opaque moving.
  if (flags.moving)
    endMove();
    
  if (windowmenu) windowmenu->hide();

  /*
   * we don't want this XUnmapWindow call to generate an UnmapNotify event, so
   * we need to clear the event mask on client.window for a split second.
   * HOWEVER, since X11 is asynchronous, the window could be destroyed in that
   * split second, leaving us with a ghost window... so, we need to do this
   * while the X server is grabbed
   */
  XGrabServer(blackbox->getXDisplay());
  XSelectInput(blackbox->getXDisplay(), client.window, NoEventMask);
  XUnmapWindow(blackbox->getXDisplay(), client.window);
  XSelectInput(blackbox->getXDisplay(), client.window,
               PropertyChangeMask | FocusChangeMask | StructureNotifyMask);
  XUngrabServer(blackbox->getXDisplay());

  XUnmapWindow(blackbox->getXDisplay(), frame.window);
  flags.visible = False;
  flags.iconic = True;

  setState(IconicState);

  screen->getWorkspace(blackbox_attrib.workspace)->removeWindow(this);

  if (isTransient()) {
    if (client.transient_for != (BlackboxWindow *) ~0ul &&
        ! client.transient_for->flags.iconic) {
      // iconify our transient_for
      client.transient_for->iconify();
    }
  }

  screen->addIcon(this);

  if (client.transientList.size() > 0) {
    // iconify all transients
    BlackboxWindowList::iterator it, end = client.transientList.end();
    for (it = client.transientList.begin(); it != end; ++it) {
      if (! (*it)->flags.iconic) (*it)->iconify();
    }
  }
}


void BlackboxWindow::show(void) {
  flags.visible = True;
  flags.iconic = False;

  current_state = (flags.shaded) ? IconicState : NormalState;
  setState(current_state);

  XMapWindow(blackbox->getXDisplay(), client.window);
  XMapSubwindows(blackbox->getXDisplay(), frame.window);
  XMapWindow(blackbox->getXDisplay(), frame.window);
}


void BlackboxWindow::deiconify(bool reassoc, bool doraise) {
  if (flags.iconic || reassoc)
    screen->reassociateWindow(this, BSENTINEL, False);
  else if (blackbox_attrib.workspace != screen->getCurrentWorkspace()->getID())
    return;

  show();

  // reassociate and deiconify all transients
  if (reassoc && client.transientList.size() > 0) {
    BlackboxWindowList::iterator it, end = client.transientList.end();
    for (it = client.transientList.begin(); it != end; ++it) {
      (*it)->deiconify(True, False);
    }
  }

  if (doraise)
    raise();
}


void BlackboxWindow::raise(void) {
  screen->getWorkspace(blackbox_attrib.workspace)->raiseWindow(this);
}


void BlackboxWindow::lower(void) {
  screen->getWorkspace(blackbox_attrib.workspace)->lowerWindow(this);
}


void BlackboxWindow::close(void) {
  XEvent ce;
  ce.xclient.type = ClientMessage;
  ce.xclient.message_type =  xatom->getAtom(XAtom::wm_protocols);
  ce.xclient.display = blackbox->getXDisplay();
  ce.xclient.window = client.window;
  ce.xclient.format = 32;
  ce.xclient.data.l[0] = xatom->getAtom(XAtom::wm_delete_window);
  ce.xclient.data.l[1] = CurrentTime;
  ce.xclient.data.l[2] = 0l;
  ce.xclient.data.l[3] = 0l;
  ce.xclient.data.l[4] = 0l;
  XSendEvent(blackbox->getXDisplay(), client.window, False, NoEventMask, &ce);
}


void BlackboxWindow::withdraw(void) {
  // We don't need to worry about resizing because resizing always grabs the X
  // server. This should only ever happen if using opaque moving.
  if (flags.moving)
    endMove();
    
  flags.visible = False;
  flags.iconic = False;

  setState(current_state);

  XUnmapWindow(blackbox->getXDisplay(), frame.window);

  XGrabServer(blackbox->getXDisplay());

  XSelectInput(blackbox->getXDisplay(), client.window, NoEventMask);
  XUnmapWindow(blackbox->getXDisplay(), client.window);
  XSelectInput(blackbox->getXDisplay(), client.window,
               PropertyChangeMask | FocusChangeMask | StructureNotifyMask);

  XUngrabServer(blackbox->getXDisplay());

  if (windowmenu) windowmenu->hide();
}


void BlackboxWindow::maximize(unsigned int button) {
  // We don't need to worry about resizing because resizing always grabs the X
  // server. This should only ever happen if using opaque moving.
  if (flags.moving)
    endMove();

  // handle case where menu is open then the max button is used instead
  if (windowmenu && windowmenu->isVisible()) windowmenu->hide();

  if (flags.maximized) {
    flags.maximized = 0;

    blackbox_attrib.flags &= ! (AttribMaxHoriz | AttribMaxVert);
    blackbox_attrib.attrib &= ! (AttribMaxHoriz | AttribMaxVert);

    /*
      when a resize finishes, maximize(0) is called to clear any maximization
      flags currently set.  Otherwise it still thinks it is maximized.
      so we do not need to call configure() because resizing will handle it
    */
    if (! flags.resizing)
      configure(blackbox_attrib.premax_x, blackbox_attrib.premax_y,
                blackbox_attrib.premax_w, blackbox_attrib.premax_h);

    blackbox_attrib.premax_x = blackbox_attrib.premax_y = 0;
    blackbox_attrib.premax_w = blackbox_attrib.premax_h = 0;

    redrawAllButtons();
    setState(current_state);
    return;
  }

  blackbox_attrib.premax_x = frame.rect.x();
  blackbox_attrib.premax_y = frame.rect.y();
  blackbox_attrib.premax_w = frame.rect.width();
  // use client.rect so that clients can be restored even if shaded
  blackbox_attrib.premax_h =
    client.rect.height() + frame.margin.top + frame.margin.bottom;

  const Rect &screen_area = screen->availableArea();
  frame.changing = screen_area;
  constrain(TopLeft);

  switch(button) {
  case 1:
    blackbox_attrib.flags |= AttribMaxHoriz | AttribMaxVert;
    blackbox_attrib.attrib |= AttribMaxHoriz | AttribMaxVert;
    break;

  case 2:
    blackbox_attrib.flags |= AttribMaxVert;
    blackbox_attrib.attrib |= AttribMaxVert;

    frame.changing.setX(frame.rect.x());
    frame.changing.setWidth(frame.rect.width());
    break;

  case 3:
    blackbox_attrib.flags |= AttribMaxHoriz;
    blackbox_attrib.attrib |= AttribMaxHoriz;

    frame.changing.setY(frame.rect.y());
    frame.changing.setHeight(frame.rect.height());
    break;
  }

  if (flags.shaded) {
    blackbox_attrib.flags ^= AttribShaded;
    blackbox_attrib.attrib ^= AttribShaded;
    flags.shaded = False;
  }

  flags.maximized = button;

  configure(frame.changing.x(), frame.changing.y(),
            frame.changing.width(), frame.changing.height());
  if (flags.focused)
    raise();
  redrawAllButtons();
  setState(current_state);
}


// re-maximizes the window to take into account availableArea changes
void BlackboxWindow::remaximize(void) {
  // save the original dimensions because maximize will wipe them out
  int premax_x = blackbox_attrib.premax_x,
    premax_y = blackbox_attrib.premax_y,
    premax_w = blackbox_attrib.premax_w,
    premax_h = blackbox_attrib.premax_h;

  unsigned int button = flags.maximized;
  flags.maximized = 0; // trick maximize() into working
  maximize(button);

  // restore saved values
  blackbox_attrib.premax_x = premax_x;
  blackbox_attrib.premax_y = premax_y;
  blackbox_attrib.premax_w = premax_w;
  blackbox_attrib.premax_h = premax_h;
}


void BlackboxWindow::setWorkspace(unsigned int n) {
  blackbox_attrib.flags |= AttribWorkspace;
  blackbox_attrib.workspace = n;
  xatom->setValue(client.window, XAtom::net_wm_desktop, XAtom::cardinal, n);
}


void BlackboxWindow::shade(void) {
  if (flags.shaded) {
    XResizeWindow(blackbox->getXDisplay(), frame.window,
                  frame.inside_w, frame.inside_h);
    flags.shaded = False;
    blackbox_attrib.flags ^= AttribShaded;
    blackbox_attrib.attrib ^= AttribShaded;

    setState(NormalState);

    // set the frame rect to the normal size
    frame.rect.setHeight(client.rect.height() + frame.margin.top +
                         frame.margin.bottom);
  } else {
    if (! (decorations & Decor_Titlebar))
      return;

    XResizeWindow(blackbox->getXDisplay(), frame.window,
                  frame.inside_w, frame.title_h);
    flags.shaded = True;
    blackbox_attrib.flags |= AttribShaded;
    blackbox_attrib.attrib |= AttribShaded;

    setState(IconicState);

    // set the frame rect to the shaded size
    frame.rect.setHeight(frame.title_h + (frame.border_w * 2));
  }
}


/*
 * (Un)Sticks a window and its relatives.
 */
void BlackboxWindow::stick(void) {
  if (flags.stuck) {
    blackbox_attrib.flags ^= AttribOmnipresent;
    blackbox_attrib.attrib ^= AttribOmnipresent;

    flags.stuck = False;

    if (! flags.iconic)
      screen->reassociateWindow(this, BSENTINEL, True);
    else
      // temporary fix since sticky windows suck. set the hint to what we
      // actually hold in our data.
      xatom->setValue(client.window, XAtom::net_wm_desktop, XAtom::cardinal,
                      blackbox_attrib.workspace);

    setState(current_state);
  } else {
    flags.stuck = True;

    blackbox_attrib.flags |= AttribOmnipresent;
    blackbox_attrib.attrib |= AttribOmnipresent;

    // temporary fix since sticky windows suck. set the hint to a different
    // value than that contained in the class' data.
    xatom->setValue(client.window, XAtom::net_wm_desktop, XAtom::cardinal,
                    0xffffffff);

    setState(current_state);
  }
  // go up the chain
  if (isTransient() && client.transient_for != (BlackboxWindow *) ~0ul &&
      client.transient_for->isStuck() != flags.stuck)
    client.transient_for->stick();
  // go down the chain
  BlackboxWindowList::iterator it;
  const BlackboxWindowList::iterator end = client.transientList.end();
  for (it = client.transientList.begin(); it != end; ++it)
    if ((*it)->isStuck() != flags.stuck)
      (*it)->stick();
}


void BlackboxWindow::setFocusFlag(bool focus) {
  // only focus a window if it is visible
  if (focus && !flags.visible)
    return;

  flags.focused = focus;

  if (decorations & Decor_Titlebar) {
    if (flags.focused) {
      if (frame.ftitle)
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.title, frame.ftitle);
      else
        XSetWindowBackground(blackbox->getXDisplay(),
                             frame.title, frame.ftitle_pixel);
    } else {
      if (frame.utitle)
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.title, frame.utitle);
      else
        XSetWindowBackground(blackbox->getXDisplay(),
                             frame.title, frame.utitle_pixel);
    }
    XClearWindow(blackbox->getXDisplay(), frame.title);

    redrawLabel();
    redrawAllButtons();
  }

  if (decorations & Decor_Handle) {
    if (flags.focused) {
      if (frame.fhandle)
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.handle, frame.fhandle);
      else
        XSetWindowBackground(blackbox->getXDisplay(),
                             frame.handle, frame.fhandle_pixel);

      if (frame.fgrip) {
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.left_grip, frame.fgrip);
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.right_grip, frame.fgrip);
      } else {
        XSetWindowBackground(blackbox->getXDisplay(),
                             frame.left_grip, frame.fgrip_pixel);
        XSetWindowBackground(blackbox->getXDisplay(),
                             frame.right_grip, frame.fgrip_pixel);
      }
    } else {
      if (frame.uhandle)
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.handle, frame.uhandle);
      else
        XSetWindowBackground(blackbox->getXDisplay(),
                             frame.handle, frame.uhandle_pixel);

      if (frame.ugrip) {
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.left_grip, frame.ugrip);
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.right_grip, frame.ugrip);
      } else {
        XSetWindowBackground(blackbox->getXDisplay(),
                             frame.left_grip, frame.ugrip_pixel);
        XSetWindowBackground(blackbox->getXDisplay(),
                             frame.right_grip, frame.ugrip_pixel);
      }
    }
    XClearWindow(blackbox->getXDisplay(), frame.handle);
    XClearWindow(blackbox->getXDisplay(), frame.left_grip);
    XClearWindow(blackbox->getXDisplay(), frame.right_grip);
  }

  if (decorations & Decor_Border) {
    if (flags.focused)
      XSetWindowBorder(blackbox->getXDisplay(),
                       frame.plate, frame.fborder_pixel);
    else
      XSetWindowBorder(blackbox->getXDisplay(),
                       frame.plate, frame.uborder_pixel);
  }

  if (screen->isSloppyFocus() && screen->doAutoRaise()) {
    if (isFocused()) timer->start();
    else timer->stop();
  }

  if (isFocused())
    blackbox->setFocusedWindow(this);
}


void BlackboxWindow::installColormap(bool install) {
  int i = 0, ncmap = 0;
  Colormap *cmaps = XListInstalledColormaps(blackbox->getXDisplay(),
                                            client.window, &ncmap);
  XWindowAttributes wattrib;
  if (cmaps) {
    if (XGetWindowAttributes(blackbox->getXDisplay(),
                             client.window, &wattrib)) {
      if (install) {
        // install the window's colormap
        for (i = 0; i < ncmap; i++) {
          if (*(cmaps + i) == wattrib.colormap)
            // this window is using an installed color map... do not install
            install = False;
        }
        // otherwise, install the window's colormap
        if (install)
          XInstallColormap(blackbox->getXDisplay(), wattrib.colormap);
      } else {
        // uninstall the window's colormap
        for (i = 0; i < ncmap; i++) {
          if (*(cmaps + i) == wattrib.colormap)
            // we found the colormap to uninstall
            XUninstallColormap(blackbox->getXDisplay(), wattrib.colormap);
        }
      }
    }

    XFree(cmaps);
  }
}


void BlackboxWindow::setAllowedActions(void) {
  Atom actions[7];
  int num = 0;
  
  actions[num++] = xatom->getAtom(XAtom::net_wm_action_shade);
  actions[num++] = xatom->getAtom(XAtom::net_wm_action_change_desktop);
  actions[num++] = xatom->getAtom(XAtom::net_wm_action_close);

  if (functions & Func_Move)
    actions[num++] = xatom->getAtom(XAtom::net_wm_action_move);
  if (functions & Func_Resize)
    actions[num++] = xatom->getAtom(XAtom::net_wm_action_resize);
  if (functions & Func_Maximize) {
    actions[num++] = xatom->getAtom(XAtom::net_wm_action_maximize_horz);
    actions[num++] = xatom->getAtom(XAtom::net_wm_action_maximize_vert);
  }

  xatom->setValue(client.window, XAtom::net_wm_allowed_actions, XAtom::atom,
                  actions, num);
}


void BlackboxWindow::setState(unsigned long new_state) {
  current_state = new_state;

  unsigned long state[2];
  state[0] = current_state;
  state[1] = None;
  xatom->setValue(client.window, XAtom::wm_state, XAtom::wm_state, state, 2);
 
  xatom->setValue(client.window, XAtom::blackbox_attributes,
                  XAtom::blackbox_attributes, (unsigned long *)&blackbox_attrib,
                  PropBlackboxAttributesElements);

  Atom netstate[8];
  int num = 0;
  if (flags.modal)
    netstate[num++] = xatom->getAtom(XAtom::net_wm_state_modal);
  if (flags.shaded)
    netstate[num++] = xatom->getAtom(XAtom::net_wm_state_shaded);
  if (flags.iconic)
    netstate[num++] = xatom->getAtom(XAtom::net_wm_state_hidden);
  if (flags.skip_taskbar)
    netstate[num++] = xatom->getAtom(XAtom::net_wm_state_skip_taskbar);
  if (flags.skip_pager)
    netstate[num++] = xatom->getAtom(XAtom::net_wm_state_skip_pager);
  if (flags.fullscreen)
    netstate[num++] = xatom->getAtom(XAtom::net_wm_state_fullscreen);
  if (flags.maximized == 1 || flags.maximized == 2)
    netstate[num++] = xatom->getAtom(XAtom::net_wm_state_maximized_vert);
  if (flags.maximized == 1 || flags.maximized == 3)
    netstate[num++] = xatom->getAtom(XAtom::net_wm_state_maximized_horz);
  xatom->setValue(client.window, XAtom::net_wm_state, XAtom::atom,
                  netstate, num);
}


bool BlackboxWindow::getState(void) {
  bool ret = xatom->getValue(client.window, XAtom::wm_state, XAtom::wm_state,
                             current_state);
  if (! ret) current_state = 0;
  return ret;
}


void BlackboxWindow::restoreAttributes(void) {
  unsigned long num = PropBlackboxAttributesElements;
  BlackboxAttributes *net;
  if (! xatom->getValue(client.window, XAtom::blackbox_attributes,
                        XAtom::blackbox_attributes, num,
                        (unsigned long **)&net))
    return;
  if (num < PropBlackboxAttributesElements) {
    delete net;
    return;
  }

  if (net->flags & AttribShaded && net->attrib & AttribShaded) {
    flags.shaded = False;
    shade();

    /*
      Because the iconic'ness of shaded windows is lost, we need to set the
      state to NormalState so that shaded windows on other workspaces will not
      get shown on the first workspace.
      At this point in the life of a window, current_state should only be set
      to IconicState if the window was an *icon*, not if it was shaded.
    */
    current_state = NormalState;
 }

  if ((net->workspace != screen->getCurrentWorkspaceID()) &&
      (net->workspace < screen->getWorkspaceCount()))
    screen->reassociateWindow(this, net->workspace, True);

  if ((blackbox_attrib.workspace != screen->getCurrentWorkspaceID()) &&
      (blackbox_attrib.workspace < screen->getWorkspaceCount())) {
    // set to WithdrawnState so it will be mapped on the new workspace
    if (current_state == NormalState) current_state = WithdrawnState;
  } else if (current_state == WithdrawnState) {
    // the window is on this workspace and is Withdrawn, so it is waiting to
    // be mapped
    current_state = NormalState;
  }

  if (net->flags & AttribOmnipresent && net->attrib & AttribOmnipresent) {
    flags.stuck = False;
    stick();

    // if the window was on another workspace, it was going to be hidden. this
    // specifies that the window should be mapped since it is sticky.
    if (current_state == WithdrawnState) current_state = NormalState;
  }

  if (net->flags & AttribMaxHoriz || net->flags & AttribMaxVert) {
    int x = net->premax_x, y = net->premax_y;
    unsigned int w = net->premax_w, h = net->premax_h;
    flags.maximized = 0;

    unsigned int m = 0;
    if ((net->flags & AttribMaxHoriz) &&
        (net->flags & AttribMaxVert))
      m = (net->attrib & (AttribMaxHoriz | AttribMaxVert)) ? 1 : 0;
    else if (net->flags & AttribMaxVert)
      m = (net->attrib & AttribMaxVert) ? 2 : 0;
    else if (net->flags & AttribMaxHoriz)
      m = (net->attrib & AttribMaxHoriz) ? 3 : 0;

    if (m) maximize(m);

    blackbox_attrib.premax_x = x;
    blackbox_attrib.premax_y = y;
    blackbox_attrib.premax_w = w;
    blackbox_attrib.premax_h = h;
  }

  // with the state set it will then be the map events job to read the window's
  // state and behave accordingly

  delete net;
}


/*
 * Positions the frame according the the client window position and window
 * gravity.
 */
void BlackboxWindow::setGravityOffsets(void) {
  // x coordinates for each gravity type
  const int x_west = client.rect.x();
  const int x_east = client.rect.right() - frame.inside_w + 1;
  const int x_center = client.rect.left() +
    ((client.rect.width() - frame.rect.width()) / 2);
  // y coordinates for each gravity type
  const int y_north = client.rect.y();
  const int y_south = client.rect.bottom() - frame.inside_h + 1;
  const int y_center = client.rect.top() +
    ((client.rect.height() - frame.rect.height()) / 2);

  switch (client.win_gravity) {
  default:
  case NorthWestGravity: frame.rect.setPos(x_west,   y_north);  break;
  case NorthGravity:     frame.rect.setPos(x_center, y_north);  break;
  case NorthEastGravity: frame.rect.setPos(x_east,   y_north);  break;
  case SouthWestGravity: frame.rect.setPos(x_west,   y_south);  break;
  case SouthGravity:     frame.rect.setPos(x_center, y_south);  break;
  case SouthEastGravity: frame.rect.setPos(x_east,   y_south);  break;
  case WestGravity:      frame.rect.setPos(x_west,   y_center); break;
  case CenterGravity:    frame.rect.setPos(x_center, y_center); break;
  case EastGravity:      frame.rect.setPos(x_east,   y_center); break;

  case ForgetGravity:
  case StaticGravity:
    frame.rect.setPos(client.rect.x() - frame.margin.left,
                      client.rect.y() - frame.margin.top);
    break;
  }
}


/*
 * The reverse of the setGravityOffsets function. Uses the frame window's
 * position to find the window's reference point.
 */
void BlackboxWindow::restoreGravity(void) {
  // x coordinates for each gravity type
  const int x_west = frame.rect.x();
  const int x_east = frame.rect.x() + frame.inside_w - client.rect.width();
  const int x_center = frame.rect.x() -
    ((client.rect.width() - frame.rect.width()) / 2);
  // y coordinates for each gravity type
  const int y_north = frame.rect.y();
  const int y_south = frame.rect.y() + frame.inside_h - client.rect.height();
  const int y_center = frame.rect.y() -
    ((client.rect.height() - frame.rect.height()) / 2);

  switch(client.win_gravity) {
  default:
  case NorthWestGravity: client.rect.setPos(x_west,   y_north);  break;
  case NorthGravity:     client.rect.setPos(x_center, y_north);  break;
  case NorthEastGravity: client.rect.setPos(x_east,   y_north);  break;
  case SouthWestGravity: client.rect.setPos(x_west,   y_south);  break;
  case SouthGravity:     client.rect.setPos(x_center, y_south);  break;
  case SouthEastGravity: client.rect.setPos(x_east,   y_south);  break;
  case WestGravity:      client.rect.setPos(x_west,   y_center); break;
  case CenterGravity:    client.rect.setPos(x_center, y_center); break;
  case EastGravity:      client.rect.setPos(x_east,   y_center); break;

  case ForgetGravity:
  case StaticGravity:
    client.rect.setPos(frame.rect.left() + frame.margin.left,
                       frame.rect.top() + frame.margin.top);
    break;
  }
}


void BlackboxWindow::redrawLabel(void) {
  if (flags.focused) {
    if (frame.flabel)
      XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                 frame.label, frame.flabel);
    else
      XSetWindowBackground(blackbox->getXDisplay(),
                           frame.label, frame.flabel_pixel);
  } else {
    if (frame.ulabel)
      XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                 frame.label, frame.ulabel);
    else
      XSetWindowBackground(blackbox->getXDisplay(),
                           frame.label, frame.ulabel_pixel);
  }
  XClearWindow(blackbox->getXDisplay(), frame.label);

  WindowStyle *style = screen->getWindowStyle();

  int pos = frame.bevel_w * 2,
    dlen = style->doJustify(client.title.c_str(), pos, frame.label_w,
                            frame.bevel_w * 4, i18n.multibyte());

  BPen pen((flags.focused) ? style->l_text_focus : style->l_text_unfocus,
           style->font);
  if (i18n.multibyte())
    XmbDrawString(blackbox->getXDisplay(), frame.label, style->fontset,
                  pen.gc(), pos,
                  (1 - style->fontset_extents->max_ink_extent.y),
                  client.title.c_str(), dlen);
  else
    XDrawString(blackbox->getXDisplay(), frame.label, pen.gc(), pos,
                (style->font->ascent + 1), client.title.c_str(), dlen);
}


void BlackboxWindow::redrawAllButtons(void) {
  if (frame.iconify_button) redrawIconifyButton(False);
  if (frame.maximize_button) redrawMaximizeButton(flags.maximized);
  if (frame.close_button) redrawCloseButton(False);
}


void BlackboxWindow::redrawIconifyButton(bool pressed) {
  if (! pressed) {
    if (flags.focused) {
      if (frame.fbutton)
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.iconify_button, frame.fbutton);
      else
        XSetWindowBackground(blackbox->getXDisplay(),
                             frame.iconify_button, frame.fbutton_pixel);
    } else {
      if (frame.ubutton)
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.iconify_button, frame.ubutton);
      else
        XSetWindowBackground(blackbox->getXDisplay(), frame.iconify_button,
                             frame.ubutton_pixel);
    }
  } else {
    if (frame.pbutton)
      XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                 frame.iconify_button, frame.pbutton);
    else
      XSetWindowBackground(blackbox->getXDisplay(),
                           frame.iconify_button, frame.pbutton_pixel);
  }
  XClearWindow(blackbox->getXDisplay(), frame.iconify_button);

  BPen pen((flags.focused) ? screen->getWindowStyle()->b_pic_focus :
           screen->getWindowStyle()->b_pic_unfocus);
  XDrawRectangle(blackbox->getXDisplay(), frame.iconify_button, pen.gc(),
                 2, (frame.button_w - 5), (frame.button_w - 5), 2);
}


void BlackboxWindow::redrawMaximizeButton(bool pressed) {
  if (! pressed) {
    if (flags.focused) {
      if (frame.fbutton)
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.maximize_button, frame.fbutton);
      else
        XSetWindowBackground(blackbox->getXDisplay(), frame.maximize_button,
                             frame.fbutton_pixel);
    } else {
      if (frame.ubutton)
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                   frame.maximize_button, frame.ubutton);
      else
        XSetWindowBackground(blackbox->getXDisplay(), frame.maximize_button,
                             frame.ubutton_pixel);
    }
  } else {
    if (frame.pbutton)
      XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                 frame.maximize_button, frame.pbutton);
    else
      XSetWindowBackground(blackbox->getXDisplay(), frame.maximize_button,
                           frame.pbutton_pixel);
  }
  XClearWindow(blackbox->getXDisplay(), frame.maximize_button);

  BPen pen((flags.focused) ? screen->getWindowStyle()->b_pic_focus :
           screen->getWindowStyle()->b_pic_unfocus);
  XDrawRectangle(blackbox->getXDisplay(), frame.maximize_button, pen.gc(),
                 2, 2, (frame.button_w - 5), (frame.button_w - 5));
  XDrawLine(blackbox->getXDisplay(), frame.maximize_button, pen.gc(),
            2, 3, (frame.button_w - 3), 3);
}


void BlackboxWindow::redrawCloseButton(bool pressed) {
  if (! pressed) {
    if (flags.focused) {
      if (frame.fbutton)
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(), frame.close_button,
                                   frame.fbutton);
      else
        XSetWindowBackground(blackbox->getXDisplay(), frame.close_button,
                             frame.fbutton_pixel);
    } else {
      if (frame.ubutton)
        XSetWindowBackgroundPixmap(blackbox->getXDisplay(), frame.close_button,
                                   frame.ubutton);
      else
        XSetWindowBackground(blackbox->getXDisplay(), frame.close_button,
                             frame.ubutton_pixel);
    }
  } else {
    if (frame.pbutton)
      XSetWindowBackgroundPixmap(blackbox->getXDisplay(),
                                 frame.close_button, frame.pbutton);
    else
      XSetWindowBackground(blackbox->getXDisplay(),
                           frame.close_button, frame.pbutton_pixel);
  }
  XClearWindow(blackbox->getXDisplay(), frame.close_button);

  BPen pen((flags.focused) ? screen->getWindowStyle()->b_pic_focus :
           screen->getWindowStyle()->b_pic_unfocus);
  XDrawLine(blackbox->getXDisplay(), frame.close_button, pen.gc(),
            2, 2, (frame.button_w - 3), (frame.button_w - 3));
  XDrawLine(blackbox->getXDisplay(), frame.close_button, pen.gc(),
            2, (frame.button_w - 3), (frame.button_w - 3), 2);
}


void BlackboxWindow::mapRequestEvent(const XMapRequestEvent *re) {
  if (re->window != client.window)
    return;

#ifdef    DEBUG
  fprintf(stderr, "BlackboxWindow::mapRequestEvent() for 0x%lx\n",
          client.window);
#endif // DEBUG

  switch (current_state) {
  case IconicState:
    iconify();
    break;

  case WithdrawnState:
    withdraw();
    break;

  case NormalState:
  case InactiveState:
  case ZoomState:
  default:
    show();
    raise();
    if (! blackbox->isStartup() && (isTransient() || screen->doFocusNew())) {
      XSync(blackbox->getXDisplay(), False); // make sure the frame is mapped..
      setInputFocus();
    }
    break;
  }
}


void BlackboxWindow::unmapNotifyEvent(const XUnmapEvent *ue) {
  if (ue->window != client.window)
    return;

#ifdef    DEBUG
  fprintf(stderr, "BlackboxWindow::unmapNotifyEvent() for 0x%lx\n",
          client.window);
#endif // DEBUG

  screen->unmanageWindow(this, False);
}


void BlackboxWindow::destroyNotifyEvent(const XDestroyWindowEvent *de) {
  if (de->window != client.window)
    return;

#ifdef    DEBUG
  fprintf(stderr, "BlackboxWindow::destroyNotifyEvent() for 0x%lx\n",
          client.window);
#endif // DEBUG

  screen->unmanageWindow(this, False);
}


void BlackboxWindow::reparentNotifyEvent(const XReparentEvent *re) {
  if (re->window != client.window || re->parent == frame.plate)
    return;

#ifdef    DEBUG
  fprintf(stderr, "BlackboxWindow::reparentNotifyEvent(): reparent 0x%lx to "
          "0x%lx.\n", client.window, re->parent);
#endif // DEBUG

  XEvent ev;
  ev.xreparent = *re;
  XPutBackEvent(blackbox->getXDisplay(), &ev);
  screen->unmanageWindow(this, True);
}


void BlackboxWindow::propertyNotifyEvent(Atom atom) {
  switch(atom) {
  case XA_WM_CLASS:
  case XA_WM_CLIENT_MACHINE:
  case XA_WM_COMMAND:
    break;

  case XA_WM_TRANSIENT_FOR: {
    // determine if this is a transient window
    getTransientInfo();

    // adjust the window decorations based on transience
    if (isTransient()) {
      decorations &= ~(Decor_Maximize | Decor_Handle);
      functions &= ~Func_Maximize;
      setAllowedActions();
    }

    reconfigure();
  }
    break;

  case XA_WM_HINTS:
    getWMHints();
    break;

  case XA_WM_ICON_NAME:
    getWMIconName();
    if (flags.iconic) screen->propagateWindowName(this);
    break;

  case XAtom::net_wm_name:
  case XA_WM_NAME:
    getWMName();

    if (decorations & Decor_Titlebar)
      redrawLabel();

    screen->propagateWindowName(this);
    break;

  case XA_WM_NORMAL_HINTS: {
    getWMNormalHints();

    if ((client.normal_hint_flags & PMinSize) &&
        (client.normal_hint_flags & PMaxSize)) {
      if (client.max_width <= client.min_width &&
          client.max_height <= client.min_height) {
        decorations &= ~(Decor_Maximize | Decor_Handle);
        functions &= ~(Func_Resize | Func_Maximize);
      } else {
        decorations |= Decor_Maximize | Decor_Handle;
        functions |= Func_Resize | Func_Maximize;
      }
      setAllowedActions();
    }

    Rect old_rect = frame.rect;

    upsize();

    if (old_rect != frame.rect)
      reconfigure();

    break;
  }

  default:
    if (atom == xatom->getAtom(XAtom::wm_protocols)) {
      getWMProtocols();

      if ((decorations & Decor_Close) && (! frame.close_button)) {
        createCloseButton();
        if (decorations & Decor_Titlebar) {
          positionButtons(True);
          XMapSubwindows(blackbox->getXDisplay(), frame.title);
        }
        if (windowmenu) windowmenu->reconfigure();
      }
    } else if (atom == xatom->getAtom(XAtom::net_wm_strut)) {
      updateStrut();
    }

    break;
  }
}


void BlackboxWindow::exposeEvent(const XExposeEvent *ee) {
  if (frame.label == ee->window && (decorations & Decor_Titlebar))
    redrawLabel();
  else if (frame.close_button == ee->window)
    redrawCloseButton(False);
  else if (frame.maximize_button == ee->window)
    redrawMaximizeButton(flags.maximized);
  else if (frame.iconify_button == ee->window)
    redrawIconifyButton(False);
}


void BlackboxWindow::configureRequestEvent(const XConfigureRequestEvent *cr) {
  if (cr->window != client.window || flags.iconic)
    return;

  int cx = frame.rect.x(), cy = frame.rect.y();
  unsigned int cw = frame.rect.width(), ch = frame.rect.height();

  if (cr->value_mask & CWBorderWidth)
    client.old_bw = cr->border_width;

  if (cr->value_mask & CWX)
    cx = cr->x - frame.margin.left;

  if (cr->value_mask & CWY)
    cy = cr->y - frame.margin.top;

  if (cr->value_mask & CWWidth)
    cw = cr->width + frame.margin.left + frame.margin.right;

  if (cr->value_mask & CWHeight)
    ch = cr->height + frame.margin.top + frame.margin.bottom;

  if (frame.rect != Rect(cx, cy, cw, ch))
    configure(cx, cy, cw, ch);

  if (cr->value_mask & CWStackMode) {
    switch (cr->detail) {
    case Below:
    case BottomIf:
      lower();
      break;

    case Above:
    case TopIf:
    default:
      raise();
      break;
    }
  }
}


void BlackboxWindow::grabButtons(void) {
  const BInput::MouseBindingList &mbindings = input->getMouseBindings();
  
  BInput::MouseBindingList::const_iterator mit = mbindings.begin();
  const BInput::MouseBindingList::const_iterator mend = mbindings.end();
  for (; mit != mend; ++mit) {
    // dont grab for an action the window can't perform
    //if (! (mit->action == BInput::BeginMove && functions & Func_Move) &&
    //    ! (mit->action == BInput::BeginResize && functions & Func_Resize)) {
      switch (mit->event) {
      case BInput::WindowClientPress:
        blackbox->grabButton(mit->button, mit->state, frame.plate, True,
                             ButtonPressMask, GrabModeSync, GrabModeSync,
                             frame.plate, None);
        break;
      case BInput::WindowDrag:
        blackbox->grabButton(mit->button, mit->state, frame.window, True,
                             ButtonMotionMask, GrabModeAsync, GrabModeAsync,
                             frame.window, None);
      default:
        break;
      }
  }
}


void BlackboxWindow::ungrabButtons(void) {
  const BInput::MouseBindingList &mbindings = input->getMouseBindings();
  
  BInput::MouseBindingList::const_iterator mit = mbindings.begin();
  const BInput::MouseBindingList::const_iterator mend = mbindings.end();
  for (; mit != mend; ++mit) {
    switch (mit->event) {
    case BInput::WindowClientPress:
      blackbox->ungrabButton(mit->button, mit->state, frame.plate);
      break;
    case BInput::WindowDrag:
      blackbox->ungrabButton(mit->button, mit->state, frame.window);
    default:
      break;
    }
  }
}


void BlackboxWindow::buttonPressEvent(const XButtonEvent *be) {
  if (windowmenu && windowmenu->isVisible()) windowmenu->hide();
  
  if (frame.maximize_button == be->window) {
    if (input->hasAction(be->button, be->state, BInput::MaximizeButtonClick))
      redrawMaximizeButton(True);
  } else if (frame.iconify_button == be->window) {
    if (input->hasAction(be->button, be->state, BInput::IconifyButtonClick))
      redrawIconifyButton(True);
  } else if (frame.close_button == be->window) {
    if (input->hasAction(be->button, be->state, BInput::CloseButtonClick))
      redrawCloseButton(True);
  } else if (frame.title == be->window || frame.label == be->window) {
    if (be->time - lastButtonPressTime <= blackbox->getDoubleClickInterval()) {
      lastButtonPressTime = 0;
      input->doAction(this, be->button, be->state,
                      BInput::WindowTitleDoublePress);
    } else {
      lastButtonPressTime = be->time;
      input->doAction(this, be->button, be->state,
                      BInput::WindowTitlePress);
    }
  } else if (frame.plate == be->window) {
    input->doAction(this, be->button, be->state, BInput::WindowClientPress);
    // buttons on the client window are grabbed in Sync mode, so we need to let
    // events back through again
    XAllowEvents(blackbox->getXDisplay(), ReplayPointer, be->time);
  } else if (frame.window == be->window || frame.handle == be->window) {
    input->doAction(this, be->button, be->state, BInput::WindowFramePress);
  }
}


void BlackboxWindow::showWindowMenu(int root_x, int root_y) {
  if (! windowmenu || windowmenu->isVisible())
    return;
  
  root_x -= windowmenu->getWidth() / 2;
  root_y -= windowmenu->getHeight() / 2;

  // snap the window menu into a corner/side if necessary
  int left_edge, right_edge, top_edge, bottom_edge;
  
  left_edge = frame.rect.x();
  right_edge = frame.rect.right() - windowmenu->getWidth() - frame.border_w - 1;
  if (decorations & Decor_Titlebar)
    top_edge = frame.rect.y() + frame.title_h + frame.border_w;
  else
    top_edge = frame.rect.y() + frame.border_w;
  if (decorations & Decor_Handle)
    bottom_edge = frame.rect.bottom() - frame.handle_h - (frame.border_w * 3) -
      windowmenu->getHeight();
  else
    bottom_edge = frame.rect.bottom() - windowmenu->getHeight() -
      frame.border_w + 1;
   
  if (root_x > right_edge)
    root_x = right_edge;
  if (root_x < left_edge)
    root_x = left_edge;

  if (root_y > bottom_edge)
    root_y = bottom_edge;
  if (root_y < top_edge)
    root_y = top_edge;


  windowmenu->move(root_x, root_y);
  windowmenu->show();
  XRaiseWindow(blackbox->getXDisplay(), windowmenu->getWindowID());
  XRaiseWindow(blackbox->getXDisplay(),
               windowmenu->getSendToMenu()->getWindowID());
}


void BlackboxWindow::buttonReleaseEvent(const XButtonEvent *re) {
  // get the proper state, without the button that was released
  unsigned int state;
  switch (re->button) {
  case Button1:
    state = re->state & ~Button1Mask;
    break;
  case Button2:
    state = re->state & ~Button2Mask;
    break;
  case Button3:
    state = re->state & ~Button3Mask;
    break;
  case Button4:
    state = re->state & ~Button4Mask;
    break;
  case Button5:
    state = re->state & ~Button5Mask;
    break;
  default:
    assert(false);  // unhandled button
  }

  if (frame.maximize_button == re->window) {
    if ((re->x < 0 || re->x >= static_cast<signed>(frame.button_w)) ||
        (re->y < 0 || re->y >= static_cast<signed>(frame.button_w)) ||
        ! input->doAction(this, re->button, state,
                          BInput::MaximizeButtonClick))
      redrawMaximizeButton(flags.maximized);
  } else if (frame.iconify_button == re->window) {
    if ((re->x < 0 || re->x >= static_cast<signed>(frame.button_w)) ||
        (re->y < 0 || re->y >= static_cast<signed>(frame.button_w)) ||
        ! input->doAction(this, re->button, state,
                          BInput::IconifyButtonClick))
      redrawIconifyButton(False);
  } else if (frame.close_button == re->window) {
    if ((re->x < 0 || re->x >= static_cast<signed>(frame.button_w)) ||
        (re->y < 0 || re->y >= static_cast<signed>(frame.button_w)))
      input->doAction(this, re->button, state, BInput::CloseButtonClick);
      redrawCloseButton(False);
  } else if (flags.moving) {
    endMove();
  } else if (flags.resizing) {
    endResize();
  }
}


void BlackboxWindow::motionNotifyEvent(const XMotionEvent *me) {
  // get the button that is being used
  // get the proper state, without the button that is being used
  unsigned int button;
  unsigned int state;
  if (me->state & Button1Mask) {
    button = Button1;
    state = me->state & ~Button1Mask;
  } else if (me->state & Button2Mask) {
    button = Button2;
    state = me->state & ~Button2Mask;
  } else if (me->state & Button3Mask) {
    button = Button3;
    state = me->state & ~Button3Mask;
  } else if (me->state & Button4Mask) {
    button = Button4;
    state = me->state & ~Button4Mask;
  } else if (me->state & Button5Mask) {
    button = Button5;
    state = me->state & ~Button5Mask;
  } else {
    return;
  }
  
  if (flags.moving) {
    doMove(me->x_root, me->y_root);
  } else if (flags.resizing) {
    doResize(me->x_root, me->y_root);
  } else {
    if (frame.title == me->window || frame.label == me->window)
      input->doAction(this, button, state, BInput::WindowTitleDrag);
    else if (frame.handle == me->window)
      input->doAction(this, button, state, BInput::WindowHandleDrag);
    else if (frame.left_grip == me->window)
      input->doAction(this, button, state, BInput::WindowLeftGripDrag);
    else if (frame.right_grip == me->window)
      input->doAction(this, button, state, BInput::WindowRightGripDrag);
    else if (frame.window == me->window)
      input->doAction(this, button, state, BInput::WindowDrag);
  }
}


void BlackboxWindow::beginMove(int x_root, int y_root) {
  assert(! (flags.resizing || flags.moving));

  /*
    Only one window can be moved/resized at a time. If another window is already
    being moved or resized, then stop it before whating to work with this one.
  */
  BlackboxWindow *changing = blackbox->getChangingWindow();
  if (changing && changing != this) {
    if (changing->flags.moving)
      changing->endMove();
    else // if (changing->flags.resizing)
      changing->endResize();
  }
  
  XGrabPointer(blackbox->getXDisplay(), frame.window, False,
               PointerMotionMask | ButtonReleaseMask,
               GrabModeAsync, GrabModeAsync,
               None, blackbox->getMoveCursor(), CurrentTime);

  if (windowmenu && windowmenu->isVisible())
    windowmenu->hide();

  flags.moving = True;
  blackbox->setChangingWindow(this);

  if (! screen->doOpaqueMove()) {
    XGrabServer(blackbox->getXDisplay());

    frame.changing = frame.rect;
    screen->showPosition(frame.changing.x(), frame.changing.y());

    XDrawRectangle(blackbox->getXDisplay(), screen->getRootWindow(),
                   screen->getOpGC(),
                   frame.changing.x(),
                   frame.changing.y(),
                   frame.changing.width() - 1,
                   frame.changing.height() - 1);
  }

  frame.grab_x = x_root - frame.rect.x() - frame.border_w;
  frame.grab_y = y_root - frame.rect.y() - frame.border_w;
}


void BlackboxWindow::doMove(int x_root, int y_root) {
  assert(flags.moving);
  assert(blackbox->getChangingWindow() == this);

  int dx = x_root - frame.grab_x, dy = y_root - frame.grab_y;
  dx -= frame.border_w;
  dy -= frame.border_w;

  const int snap_distance = screen->getEdgeSnapThreshold();

  if (snap_distance) {
    // window corners
    const int wleft = dx,
              wright = dx + frame.rect.width() - 1,
              wtop = dy,
              wbottom = dy + frame.rect.height() - 1;

    if (screen->getWindowToWindowSnap()) {
      Workspace *w = screen->getWorkspace(getWorkspaceNumber());
      assert(w);

      // try snap to another window
      for (unsigned int i = 0, c = w->getCount(); i < c; ++i) {
        BlackboxWindow *snapwin = w->getWindow(i);
        if (snapwin == this)
          continue;   // don't snap to self

        bool snapped = False;
        
        const Rect &winrect = snapwin->frameRect();
        int dleft = std::abs(wright - winrect.left()),
           dright = std::abs(wleft - winrect.right()),
             dtop = std::abs(wbottom - winrect.top()),
          dbottom = std::abs(wtop - winrect.bottom());

        if (wtop >= (signed)(winrect.y() - frame.rect.height() + 1) &&
            wtop < (signed)(winrect.y() + winrect.height() - 1)) {

          // snap left of other window?
          if (dleft < snap_distance && dleft <= dright) {
            dx = winrect.left() - frame.rect.width();
            snapped = True;
          }
          // snap right of other window?
          else if (dright < snap_distance) {
            dx = winrect.right() + 1;
            snapped = True;
          }

          if (snapped) {
            if (screen->getWindowCornerSnap()) {
              // try corner-snap to its other sides
              dtop = std::abs(wtop - winrect.top());
              dbottom = std::abs(wbottom - winrect.bottom());
              if (dtop < snap_distance && dtop <= dbottom)
                dy = winrect.top();
              else if (dbottom < snap_distance)
                dy = winrect.bottom() - frame.rect.height() + 1;
            }

            continue;
          }
        }

        if (wleft >= (signed)(winrect.x() - frame.rect.width() + 1) &&
            wleft < (signed)(winrect.x() + winrect.width() - 1)) {

          // snap top of other window?
          if (dtop < snap_distance && dtop <= dbottom) {
            dy = winrect.top() - frame.rect.height();
            snapped = True;
          }
          // snap bottom of other window?
          else if (dbottom < snap_distance) {
            dy = winrect.bottom() + 1;
            snapped = True;
          }

          if (snapped) {
            if (screen->getWindowCornerSnap()) {
              // try corner-snap to its other sides
              dleft = std::abs(wleft - winrect.left());
              dright = std::abs(wright - winrect.right());
              if (dleft < snap_distance && dleft <= dright)
                dx = winrect.left();
              else if (dright < snap_distance)
                dx = winrect.right() - frame.rect.width() + 1;
            }

            continue;
          }
        }
      }
    }

    // try snap to the screen's available area
    Rect srect = screen->availableArea();

    int dleft = std::abs(wleft - srect.left()),
       dright = std::abs(wright - srect.right()),
         dtop = std::abs(wtop - srect.top()),
      dbottom = std::abs(wbottom - srect.bottom());

    // snap left?
    if (dleft < snap_distance && dleft <= dright)
      dx = srect.left();
    // snap right?
    else if (dright < snap_distance)
      dx = srect.right() - frame.rect.width() + 1;

    // snap top?
    if (dtop < snap_distance && dtop <= dbottom)
      dy = srect.top();
    // snap bottom?
    else if (dbottom < snap_distance)
      dy = srect.bottom() - frame.rect.height() + 1;

    srect = screen->getRect(); // now get the full screen

    dleft = std::abs(wleft - srect.left()),
      dright = std::abs(wright - srect.right()),
      dtop = std::abs(wtop - srect.top()),
      dbottom = std::abs(wbottom - srect.bottom());

    // snap left?
    if (dleft < snap_distance && dleft <= dright)
      dx = srect.left();
    // snap right?
    else if (dright < snap_distance)
      dx = srect.right() - frame.rect.width() + 1;

    // snap top?
    if (dtop < snap_distance && dtop <= dbottom)
      dy = srect.top();
    // snap bottom?
    else if (dbottom < snap_distance)
      dy = srect.bottom() - frame.rect.height() + 1;
  }

  if (screen->doOpaqueMove()) {
    configure(dx, dy, frame.rect.width(), frame.rect.height());
  } else {
    XDrawRectangle(blackbox->getXDisplay(), screen->getRootWindow(),
                   screen->getOpGC(),
                   frame.changing.x(),
                   frame.changing.y(),
                   frame.changing.width() - 1,
                   frame.changing.height() - 1);

    frame.changing.setPos(dx, dy);

    XDrawRectangle(blackbox->getXDisplay(), screen->getRootWindow(),
                   screen->getOpGC(),
                   frame.changing.x(),
                   frame.changing.y(),
                   frame.changing.width() - 1,
                   frame.changing.height() - 1);
  }

  screen->showPosition(dx, dy);
}


void BlackboxWindow::endMove(void) {
  assert(flags.moving);
  assert(blackbox->getChangingWindow() == this);

  flags.moving = False;
  blackbox->setChangingWindow(0);

  if (! screen->doOpaqueMove()) {
    /* when drawing the rubber band, we need to make sure we only draw inside
     * the frame... frame.changing_* contain the new coords for the window,
     * so we need to subtract 1 from changing_w/changing_h every where we
     * draw the rubber band (for both moving and resizing)
     */
    XDrawRectangle(blackbox->getXDisplay(), screen->getRootWindow(),
                   screen->getOpGC(), frame.changing.x(), frame.changing.y(),
                   frame.changing.width() - 1, frame.changing.height() - 1);
      XUngrabServer(blackbox->getXDisplay());
  
      configure(frame.changing.x(), frame.changing.y(),
                frame.changing.width(), frame.changing.height());
  } else {
    configure(frame.rect.x(), frame.rect.y(),
              frame.rect.width(), frame.rect.height());
  }
  screen->hideGeometry();

  XUngrabPointer(blackbox->getXDisplay(), CurrentTime);

  // if there are any left over motions from the move, drop them now
  XSync(blackbox->getXDisplay(), false); // make sure we don't miss any
  XEvent e;
  while (XCheckTypedWindowEvent(blackbox->getXDisplay(), frame.window,
                                MotionNotify, &e));
}


void BlackboxWindow::beginResize(int x_root, int y_root, Corner dir) {
  assert(! (flags.resizing || flags.moving));

  /*
    Only one window can be moved/resized at a time. If another window is already
    being moved or resized, then stop it before whating to work with this one.
  */
  BlackboxWindow *changing = blackbox->getChangingWindow();
  if (changing && changing != this) {
    if (changing->flags.moving)
      changing->endMove();
    else // if (changing->flags.resizing)
      changing->endResize();
  }

  resize_dir = dir;

  Cursor cursor;
  Corner anchor;
  
  switch (resize_dir) {
  case BottomLeft:
    anchor = TopRight;
    cursor = blackbox->getLowerLeftAngleCursor();
    break;

  case BottomRight:
    anchor = TopLeft;
    cursor = blackbox->getLowerRightAngleCursor();
    break;

  case TopLeft:
    anchor = BottomRight;
    cursor = blackbox->getUpperLeftAngleCursor();
    break;

  case TopRight:
    anchor = BottomLeft;
    cursor = blackbox->getUpperRightAngleCursor();
    break;

  default:
    assert(false); // unhandled Corner
  }
  
  XGrabServer(blackbox->getXDisplay());
  XGrabPointer(blackbox->getXDisplay(), frame.window, False,
               PointerMotionMask | ButtonReleaseMask,
               GrabModeAsync, GrabModeAsync, None, cursor, CurrentTime);

  flags.resizing = True;
  blackbox->setChangingWindow(this);

  int gw, gh;
  frame.changing = frame.rect;

  constrain(anchor,  &gw, &gh);

  XDrawRectangle(blackbox->getXDisplay(), screen->getRootWindow(),
                 screen->getOpGC(), frame.changing.x(), frame.changing.y(),
                 frame.changing.width() - 1, frame.changing.height() - 1);

  screen->showGeometry(gw, gh);
  
  frame.grab_x = x_root;
  frame.grab_y = y_root;
}


void BlackboxWindow::doResize(int x_root, int y_root) {
  assert(flags.resizing);
  assert(blackbox->getChangingWindow() == this);

  XDrawRectangle(blackbox->getXDisplay(), screen->getRootWindow(),
                 screen->getOpGC(), frame.changing.x(), frame.changing.y(),
                 frame.changing.width() - 1, frame.changing.height() - 1);

  int gw, gh;
  Corner anchor;

  switch (resize_dir) {
    case BottomLeft:
      anchor = TopRight;
      frame.changing.setSize(frame.rect.width() - (x_root - frame.grab_x),
                             frame.rect.height() + (y_root - frame.grab_y));
      break;
    case BottomRight:
      anchor = TopLeft;
      frame.changing.setSize(frame.rect.width() + (x_root - frame.grab_x),
                             frame.rect.height() + (y_root - frame.grab_y));
      break;
    case TopLeft:
      anchor = BottomRight;
      frame.changing.setSize(frame.rect.width() - (x_root - frame.grab_x),
                             frame.rect.height() - (y_root - frame.grab_y));
      break;
    case TopRight:
      anchor = BottomLeft;
      frame.changing.setSize(frame.rect.width() + (x_root - frame.grab_x),
                             frame.rect.height() - (y_root - frame.grab_y));
      break;

    default:
      assert(false); // unhandled Corner
  }
  
  constrain(anchor, &gw, &gh);

  XDrawRectangle(blackbox->getXDisplay(), screen->getRootWindow(),
                 screen->getOpGC(), frame.changing.x(), frame.changing.y(),
                 frame.changing.width() - 1, frame.changing.height() - 1);

  screen->showGeometry(gw, gh);
}


void BlackboxWindow::endResize(void) {
  assert(flags.resizing);
  assert(blackbox->getChangingWindow() == this);

  XDrawRectangle(blackbox->getXDisplay(), screen->getRootWindow(),
                 screen->getOpGC(), frame.changing.x(), frame.changing.y(),
                 frame.changing.width() - 1, frame.changing.height() - 1);
  XUngrabServer(blackbox->getXDisplay());

  // unset maximized state after resized when fully maximized
  if (flags.maximized == 1)
    maximize(0);
  
  flags.resizing = False;
  blackbox->setChangingWindow(0);

  configure(frame.changing.x(), frame.changing.y(),
            frame.changing.width(), frame.changing.height());
  screen->hideGeometry();

  XUngrabPointer(blackbox->getXDisplay(), CurrentTime);
  
  // if there are any left over motions from the resize, drop them now
  XSync(blackbox->getXDisplay(), false); // make sure we don't miss any
  XEvent e;
  while (XCheckTypedWindowEvent(blackbox->getXDisplay(), frame.window,
                                MotionNotify, &e));
}


#ifdef    SHAPE
void BlackboxWindow::shapeEvent(XShapeEvent *) {
  if (blackbox->hasShapeExtensions() && flags.shaped) {
    configureShape();
  }
}
#endif // SHAPE


bool BlackboxWindow::validateClient(void) const {
  XSync(blackbox->getXDisplay(), False);

  XEvent e;
  if (XCheckTypedWindowEvent(blackbox->getXDisplay(), client.window,
                             DestroyNotify, &e) ||
      XCheckTypedWindowEvent(blackbox->getXDisplay(), client.window,
                             UnmapNotify, &e)) {
    XPutBackEvent(blackbox->getXDisplay(), &e);

    return False;
  }

  return True;
}


void BlackboxWindow::restore(bool remap) {
  XChangeSaveSet(blackbox->getXDisplay(), client.window, SetModeDelete);
  XSelectInput(blackbox->getXDisplay(), client.window, NoEventMask);
  XSelectInput(blackbox->getXDisplay(), frame.plate, NoEventMask);

  restoreGravity();

  XUnmapWindow(blackbox->getXDisplay(), frame.window);
  XUnmapWindow(blackbox->getXDisplay(), client.window);

  XSetWindowBorderWidth(blackbox->getXDisplay(), client.window, client.old_bw);

  XEvent ev;
  if (XCheckTypedWindowEvent(blackbox->getXDisplay(), client.window,
                             ReparentNotify, &ev)) {
    remap = True;
  } else {
    // according to the ICCCM - if the client doesn't reparent to
    // root, then we have to do it for them
    XReparentWindow(blackbox->getXDisplay(), client.window,
                    screen->getRootWindow(),
                    client.rect.x(), client.rect.y());
  }

  if (remap) XMapWindow(blackbox->getXDisplay(), client.window);
}


// timer for autoraise
void BlackboxWindow::timeout(void) {
  raise();
}


void BlackboxWindow::changeBlackboxHints(BlackboxHints *net) {
  if ((net->flags & AttribShaded) &&
      ((blackbox_attrib.attrib & AttribShaded) !=
       (net->attrib & AttribShaded)))
    shade();

  if (flags.visible && // watch out for requests when we can not be seen
      (net->flags & (AttribMaxVert | AttribMaxHoriz)) &&
      ((blackbox_attrib.attrib & (AttribMaxVert | AttribMaxHoriz)) !=
       (net->attrib & (AttribMaxVert | AttribMaxHoriz)))) {
    if (flags.maximized) {
      maximize(0);
    } else {
      int button = 0;

      if ((net->flags & AttribMaxHoriz) && (net->flags & AttribMaxVert))
        button = ((net->attrib & (AttribMaxHoriz | AttribMaxVert)) ?  1 : 0);
      else if (net->flags & AttribMaxVert)
        button = ((net->attrib & AttribMaxVert) ? 2 : 0);
      else if (net->flags & AttribMaxHoriz)
        button = ((net->attrib & AttribMaxHoriz) ? 3 : 0);

      maximize(button);
    }
  }

  if ((net->flags & AttribOmnipresent) &&
      ((blackbox_attrib.attrib & AttribOmnipresent) !=
       (net->attrib & AttribOmnipresent)))
    stick();

  if ((net->flags & AttribWorkspace) &&
      (blackbox_attrib.workspace != net->workspace)) {
    screen->reassociateWindow(this, net->workspace, True);

    if (screen->getCurrentWorkspaceID() != net->workspace) {
      withdraw();
    } else {
      show();
      raise();
    }
  }

  if (net->flags & AttribDecoration) {
    switch (net->decoration) {
    case DecorNone:
      // clear all decorations except close
      decorations &= Decor_Close;

      break;

    default:
    case DecorNormal:
      decorations |= Decor_Titlebar | Decor_Border | Decor_Iconify;
  
      decorations = ((functions & Func_Resize) && !isTransient() ?
                     decorations | Decor_Handle :
                     decorations &= ~Decor_Handle);
      decorations = (functions & Func_Maximize ?
                     decorations | Decor_Maximize :
                     decorations &= ~Decor_Maximize);

      break;

    case DecorTiny:
      decorations |= Decor_Titlebar | Decor_Iconify;
      decorations &= ~(Decor_Border | Decor_Handle);
      
      decorations = (functions & Func_Maximize ?
                     decorations | Decor_Maximize :
                     decorations &= ~Decor_Maximize);

      break;

    case DecorTool:
      decorations |= Decor_Titlebar;
      decorations &= ~(Decor_Iconify | Decor_Border);

      decorations = ((functions & Func_Resize) && !isTransient() ?
                     decorations | Decor_Handle :
                     decorations &= ~Decor_Handle);
      decorations = (functions & Func_Maximize ?
                     decorations | Decor_Maximize :
                     decorations &= ~Decor_Maximize);

      break;
    }

    // we can not be shaded if we lack a titlebar
    if (flags.shaded && ! (decorations & Decor_Titlebar))
      shade();

    if (frame.window) {
      XMapSubwindows(blackbox->getXDisplay(), frame.window);
      XMapWindow(blackbox->getXDisplay(), frame.window);
    }

    reconfigure();
    setState(current_state);
  }
}


/*
 * Set the sizes of all components of the window frame
 * (the window decorations).
 * These values are based upon the current style settings and the client
 * window's dimensions.
 */
void BlackboxWindow::upsize(void) {
  frame.bevel_w = screen->getBevelWidth();

  if (decorations & Decor_Border) {
    frame.border_w = screen->getBorderWidth();
    if (! isTransient())
      frame.mwm_border_w = screen->getFrameWidth();
    else
      frame.mwm_border_w = 0;
  } else {
    frame.mwm_border_w = frame.border_w = 0;
  }

  if (decorations & Decor_Titlebar) {
    // the height of the titlebar is based upon the height of the font being
    // used to display the window's title
    WindowStyle *style = screen->getWindowStyle();
    if (i18n.multibyte())
      frame.title_h = (style->fontset_extents->max_ink_extent.height +
                       (frame.bevel_w * 2) + 2);
    else
      frame.title_h = (style->font->ascent + style->font->descent +
                       (frame.bevel_w * 2) + 2);

    frame.label_h = frame.title_h - (frame.bevel_w * 2);
    frame.button_w = (frame.label_h - 2);

    // set the top frame margin
    frame.margin.top = frame.border_w + frame.title_h +
                       frame.border_w + frame.mwm_border_w;
  } else {
    frame.title_h = 0;
    frame.label_h = 0;
    frame.button_w = 0;

    // set the top frame margin
    frame.margin.top = frame.border_w + frame.mwm_border_w;
  }

  // set the left/right frame margin
  frame.margin.left = frame.margin.right = frame.border_w + frame.mwm_border_w;

  if (decorations & Decor_Handle) {
    frame.grip_w = frame.button_w * 2;
    frame.handle_h = screen->getHandleWidth();

    // set the bottom frame margin
    frame.margin.bottom = frame.border_w + frame.handle_h +
                          frame.border_w + frame.mwm_border_w;
  } else {
    frame.handle_h = 0;
    frame.grip_w = 0;

    // set the bottom frame margin
    frame.margin.bottom = frame.border_w + frame.mwm_border_w;
  }

  /*
    We first get the normal dimensions and use this to define the inside_w/h
    then we modify the height if shading is in effect.
    If the shade state is not considered then frame.rect gets reset to the
    normal window size on a reconfigure() call resulting in improper
    dimensions appearing in move/resize and other events.
  */
  unsigned int
    height = client.rect.height() + frame.margin.top + frame.margin.bottom,
    width = client.rect.width() + frame.margin.left + frame.margin.right;

  frame.inside_w = width - (frame.border_w * 2);
  frame.inside_h = height - (frame.border_w * 2);

  if (flags.shaded)
    height = frame.title_h + (frame.border_w * 2);
  frame.rect.setSize(width, height);
}


/*
 * Calculate the size of the client window and constrain it to the
 * size specified by the size hints of the client window.
 *
 * The logical width and height are placed into pw and ph, if they
 * are non-zero.  Logical size refers to the users perception of
 * the window size (for example an xterm resizes in cells, not in pixels).
 *
 * The physical geometry is placed into frame.changing_{x,y,width,height}.
 * Physical geometry refers to the geometry of the window in pixels.
 */
void BlackboxWindow::constrain(Corner anchor, int *pw, int *ph) {
  // frame.changing represents the requested frame size, we need to
  // strip the frame margin off and constrain the client size
  frame.changing.setCoords(frame.changing.left() + frame.margin.left,
                           frame.changing.top() + frame.margin.top,
                           frame.changing.right() - frame.margin.right,
                           frame.changing.bottom() - frame.margin.bottom);

  int dw = frame.changing.width(), dh = frame.changing.height(),
    base_width = (client.base_width) ? client.base_width : client.min_width,
    base_height = (client.base_height) ? client.base_height :
                                         client.min_height;

  // constrain
  if (dw < static_cast<signed>(client.min_width)) dw = client.min_width;
  if (dh < static_cast<signed>(client.min_height)) dh = client.min_height;
  if (dw > static_cast<signed>(client.max_width)) dw = client.max_width;
  if (dh > static_cast<signed>(client.max_height)) dh = client.max_height;

  dw -= base_width;
  dw /= client.width_inc;
  dh -= base_height;
  dh /= client.height_inc;

  if (pw) *pw = dw;
  if (ph) *ph = dh;

  dw *= client.width_inc;
  dw += base_width;
  dh *= client.height_inc;
  dh += base_height;

  frame.changing.setSize(dw, dh);

  // add the frame margin back onto frame.changing
  frame.changing.setCoords(frame.changing.left() - frame.margin.left,
                           frame.changing.top() - frame.margin.top,
                           frame.changing.right() + frame.margin.right,
                           frame.changing.bottom() + frame.margin.bottom);

  // move frame.changing to the specified anchor
  int dx = 0,
      dy = 0;
  switch (anchor) {
  case TopLeft:
    break;

  case TopRight:
    dx = frame.rect.right() - frame.changing.right();
    break;

  case BottomLeft:
    dy = frame.rect.bottom() - frame.changing.bottom();
    break;

  case BottomRight:
    dx = frame.rect.right() - frame.changing.right();
    dy = frame.rect.bottom() - frame.changing.bottom();
    break;

  default:
    assert(false);  // unhandled corner
  }
  frame.changing.setPos(frame.changing.x() + dx, frame.changing.y() + dy);
}


int WindowStyle::doJustify(const char *text, int &start_pos,
                           unsigned int max_length, unsigned int modifier,
                           bool multibyte) const {
  size_t text_len = strlen(text);
  unsigned int length;

  do {
    if (multibyte) {
      XRectangle ink, logical;
      XmbTextExtents(fontset, text, text_len, &ink, &logical);
      length = logical.width;
    } else {
      length = XTextWidth(font, text, text_len);
    }
    length += modifier;
  } while (length > max_length && text_len-- > 0);

  switch (justify) {
  case RightJustify:
    start_pos += max_length - length;
    break;

  case CenterJustify:
    start_pos += (max_length - length) / 2;
    break;

  case LeftJustify:
  default:
    break;
  }

  return text_len;
}


BWindowGroup::BWindowGroup(Blackbox *b, Window _group)
  : blackbox(b), group(_group) {
  XWindowAttributes wattrib;
  if (! XGetWindowAttributes(blackbox->getXDisplay(), group, &wattrib)) {
    // group window doesn't seem to exist anymore
    delete this;
    return;
  }

  /*
    watch for destroy notify on the group window (in addition to
    any other events we are looking for)

    since some managed windows can also be window group controllers,
    we need to make sure that we don't clobber the event mask for the
    managed window
  */
  XSelectInput(blackbox->getXDisplay(), group,
               wattrib.your_event_mask | StructureNotifyMask);

  blackbox->saveGroupSearch(group, this);
}


BWindowGroup::~BWindowGroup(void) {
  blackbox->removeGroupSearch(group);
}


BlackboxWindow *
BWindowGroup::find(BScreen *screen, bool allow_transients) const {
  BlackboxWindow *ret = blackbox->getFocusedWindow();

  // does the focus window match (or any transient_fors)?
  while (ret) {
    if (ret->getScreen() == screen && ret->getGroupWindow() == group) {
      if (ret->isTransient() && allow_transients) break;
      else if (! ret->isTransient()) break;
    }

    ret = ret->getTransientFor();
  }

  if (ret) return ret;

  // the focus window didn't match, look in the group's window list
  BlackboxWindowList::const_iterator it, end = windowList.end();
  for (it = windowList.begin(); it != end; ++it) {
    ret = *it;
    if (ret->getScreen() == screen && ret->getGroupWindow() == group) {
      if (ret->isTransient() && allow_transients) break;
      else if (! ret->isTransient()) break;
    }
  }

  return ret;
}