/*
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

   xrdp: A Remote Desktop Protocol server.
   Copyright (C) Jay Sorg 2004-2006

   simple window manager

*/

#include "xrdp.h"

/*****************************************************************************/
struct xrdp_wm* APP_CC
xrdp_wm_create(struct xrdp_process* owner,
               struct xrdp_client_info* client_info)
{
  struct xrdp_wm* self;

  self = (struct xrdp_wm*)g_malloc(sizeof(struct xrdp_wm), 1);
  self->client_info = client_info;
  self->screen = xrdp_bitmap_create(client_info->width,
                                    client_info->height,
                                    client_info->bpp,
                                    WND_TYPE_SCREEN, self);
  self->screen->wm = self;
  self->pro_layer = owner;
  self->session = owner->session;
  self->painter = xrdp_painter_create(self, self->session);
  self->cache = xrdp_cache_create(self, self->session, self->client_info);
  self->log = list_create();
  self->log->auto_free = 1;
  return self;
}

/*****************************************************************************/
/* called from main thread */
static long DEFAULT_CC
sync_unload(long param1, long param2)
{
  g_free_library(param1);
  return 0;
}

/*****************************************************************************/
void APP_CC
xrdp_wm_delete(struct xrdp_wm* self)
{
  if (self == 0)
  {
    return;
  }
  xrdp_cache_delete(self->cache);
  xrdp_painter_delete(self->painter);
  xrdp_bitmap_delete(self->screen);
  /* free any modual stuff */
  if (self->mod != 0)
  {
    if (self->mod_exit != 0)
    {
      self->mod_exit(self->mod);
    }
  }
  if (self->mod_handle != 0)
  {
    g_xrdp_sync(sync_unload, self->mod_handle, 0);
  }
  /* free the log */
  list_delete(self->log);
  /* free self */
  g_free(self);
}

/*****************************************************************************/
int APP_CC
xrdp_wm_send_palette(struct xrdp_wm* self)
{
  return libxrdp_send_palette(self->session, self->palette);
}

/*****************************************************************************/
int APP_CC
xrdp_wm_send_bitmap(struct xrdp_wm* self, struct xrdp_bitmap* bitmap,
                    int x, int y, int cx, int cy)
{
  return libxrdp_send_bitmap(self->session, bitmap->width, bitmap->height,
                             bitmap->bpp, bitmap->data, x, y, cx, cy);
}

/*****************************************************************************/
int APP_CC
xrdp_wm_set_focused(struct xrdp_wm* self, struct xrdp_bitmap* wnd)
{
  struct xrdp_bitmap* focus_out_control;
  struct xrdp_bitmap* focus_in_control;

  if (self == 0)
  {
    return 0;
  }
  if (self->focused_window == wnd)
  {
    return 0;
  }
  focus_out_control = 0;
  focus_in_control = 0;
  if (self->focused_window != 0)
  {
    xrdp_bitmap_set_focus(self->focused_window, 0);
    focus_out_control = self->focused_window->focused_control;
  }
  self->focused_window = wnd;
  if (self->focused_window != 0)
  {
    xrdp_bitmap_set_focus(self->focused_window, 1);
    focus_in_control = self->focused_window->focused_control;
  }
  xrdp_bitmap_invalidate(focus_out_control, 0);
  xrdp_bitmap_invalidate(focus_in_control, 0);
  return 0;
}

/******************************************************************************/
int APP_CC
xrdp_wm_get_pixel(char* data, int x, int y, int width, int bpp)
{
  int start;
  int shift;

  if (bpp == 1)
  {
    width = (width + 7) / 8;
    start = (y * width) + x / 8;
    shift = x % 8;
    return (data[start] & (0x80 >> shift)) != 0;
  }
  else if (bpp == 4)
  {
    width = (width + 1) / 2;
    start = y * width + x / 2;
    shift = x % 2;
    if (shift == 0)
    {
      return (data[start] & 0xf0) >> 4;
    }
    else
    {
      return data[start] & 0x0f;
    }
  }
  return 0;
}

/*****************************************************************************/
int APP_CC
xrdp_wm_pointer(struct xrdp_wm* self, char* data, char* mask, int x, int y)
{
  struct xrdp_pointer_item pointer_item;

  g_memset(&pointer_item, 0, sizeof(struct xrdp_pointer_item));
  pointer_item.x = x;
  pointer_item.y = y;
  g_memcpy(pointer_item.data, data, 32 * 32 * 3);
  g_memcpy(pointer_item.mask, mask, 32 * 32 / 8);
  self->screen->pointer = xrdp_cache_add_pointer(self->cache, &pointer_item);
  return 0;
}

/*****************************************************************************/
int APP_CC
xrdp_wm_load_pointer(struct xrdp_wm* self, char* file_name, char* data,
                     char* mask, int* x, int* y)
{
  int fd;
  int bpp;
  int w;
  int h;
  int i;
  int j;
  int pixel;
  int palette[16];
  struct stream* fs;

  make_stream(fs);
  init_stream(fs, 8192);
  fd = g_file_open(file_name);
  g_file_read(fd, fs->data, 8192);
  g_file_close(fd);
  in_uint8s(fs, 6);
  in_uint8(fs, w);
  in_uint8(fs, h);
  in_uint8s(fs, 2);
  in_uint16_le(fs, *x);
  in_uint16_le(fs, *y);
  in_uint8s(fs, 22);
  in_uint8(fs, bpp);
  in_uint8s(fs, 25);
  if (w == 32 && h == 32)
  {
    if (bpp == 1)
    {
      in_uint8a(fs, palette, 8);
      for (i = 0; i < 32; i++)
      {
        for (j = 0; j < 32; j++)
        {
          pixel = palette[xrdp_wm_get_pixel(fs->p, j, i, 32, 1)];
          *data = pixel;
          data++;
          *data = pixel >> 8;
          data++;
          *data = pixel >> 16;
          data++;
        }
      }
      in_uint8s(fs, 128);
    }
    else if (bpp == 4)
    {
      in_uint8a(fs, palette, 64);
      for (i = 0; i < 32; i++)
      {
        for (j = 0; j < 32; j++)
        {
          pixel = palette[xrdp_wm_get_pixel(fs->p, j, i, 32, 1)];
          *data = pixel;
          data++;
          *data = pixel >> 8;
          data++;
          *data = pixel >> 16;
          data++;
        }
      }
      in_uint8s(fs, 512);
    }
    g_memcpy(mask, fs->p, 128); /* mask */
  }
  free_stream(fs);
  return 0;
}

/*****************************************************************************/
int APP_CC
xrdp_wm_send_pointer(struct xrdp_wm* self, int cache_idx,
                     char* data, char* mask, int x, int y)
{
  return libxrdp_send_pointer(self->session, cache_idx, data, mask, x, y);
}

/*****************************************************************************/
int APP_CC
xrdp_wm_set_pointer(struct xrdp_wm* self, int cache_idx)
{
  return libxrdp_set_pointer(self->session, cache_idx);
}

/*****************************************************************************/
int APP_CC
xrdp_wm_load_static_colors(struct xrdp_wm* self)
{
  int bindex;
  int gindex;
  int rindex;

  if (self->screen->bpp == 8)
  {
    /* rgb332 */
    for (bindex = 0; bindex < 4; bindex++)
    {
      for (gindex = 0; gindex < 8; gindex++)
      {
        for (rindex = 0; rindex < 8; rindex++)
        {
          self->palette[(bindex << 6) | (gindex << 3) | rindex] =
                (((rindex << 5) | (rindex << 2) | (rindex >> 1)) << 16) |
                (((gindex << 5) | (gindex << 2) | (gindex >> 1)) << 8) |
                ((bindex << 6) | (bindex << 4) | (bindex << 2) | (bindex));
        }
      }
    }
    self->black     = COLOR8(0, 0, 0);
    self->grey      = COLOR8(0xc0, 0xc0, 0xc0);
    self->dark_grey = COLOR8(0x80, 0x80, 0x80);
    self->blue      = COLOR8(0x00, 0x00, 0xff);
    self->dark_blue = COLOR8(0x00, 0x00, 0x7f);
    self->white     = COLOR8(0xff, 0xff, 0xff);
    self->red       = COLOR8(0xff, 0x00, 0x00);
    self->green     = COLOR8(0x00, 0xff, 0x00);
    xrdp_wm_send_palette(self);
  }
  else if (self->screen->bpp == 15)
  {
    self->black     = COLOR15(0, 0, 0);
    self->grey      = COLOR15(0xc0, 0xc0, 0xc0);
    self->dark_grey = COLOR15(0x80, 0x80, 0x80);
    self->blue      = COLOR15(0x00, 0x00, 0xff);
    self->dark_blue = COLOR15(0x00, 0x00, 0x7f);
    self->white     = COLOR15(0xff, 0xff, 0xff);
    self->red       = COLOR15(0xff, 0x00, 0x00);
    self->green     = COLOR15(0x00, 0xff, 0x00);
  }
  else if (self->screen->bpp == 16)
  {
    self->black     = COLOR16(0, 0, 0);
    self->grey      = COLOR16(0xc0, 0xc0, 0xc0);
    self->dark_grey = COLOR16(0x80, 0x80, 0x80);
    self->blue      = COLOR16(0x00, 0x00, 0xff);
    self->dark_blue = COLOR16(0x00, 0x00, 0x7f);
    self->white     = COLOR16(0xff, 0xff, 0xff);
    self->red       = COLOR16(0xff, 0x00, 0x00);
    self->green     = COLOR16(0x00, 0xff, 0x00);
  }
  else if (self->screen->bpp == 24)
  {
    self->black     = COLOR24(0, 0, 0);
    self->grey      = COLOR24(0xc0, 0xc0, 0xc0);
    self->dark_grey = COLOR24(0x80, 0x80, 0x80);
    self->blue      = COLOR24(0x00, 0x00, 0xff);
    self->dark_blue = COLOR24(0x00, 0x00, 0x7f);
    self->white     = COLOR24(0xff, 0xff, 0xff);
    self->red       = COLOR24(0xff, 0x00, 0x00);
    self->green     = COLOR24(0x00, 0xff, 0x00);
  }
  return 0;
}

/*****************************************************************************/
int APP_CC
xrdp_wm_load_static_pointers(struct xrdp_wm* self)
{
  struct xrdp_pointer_item pointer_item;

  DEBUG(("sending cursor\r\n"));
  xrdp_wm_load_pointer(self, "cursor1.cur", pointer_item.data,
                       pointer_item.mask, &pointer_item.x, &pointer_item.y);
  xrdp_cache_add_pointer_static(self->cache, &pointer_item, 1);
  DEBUG(("sending cursor\r\n"));
  xrdp_wm_load_pointer(self, "cursor0.cur", pointer_item.data,
                       pointer_item.mask, &pointer_item.x, &pointer_item.y);
  xrdp_cache_add_pointer_static(self->cache, &pointer_item, 0);
  return 0;
}

/*****************************************************************************/
int APP_CC
xrdp_wm_init(struct xrdp_wm* self)
{
  int fd;
  int index;
  struct xrdp_mod_data* mod_data;
  struct list* names;
  struct list* values;
  char* q;
  char* r;
  char section_name[256];

  xrdp_wm_load_static_colors(self);
  xrdp_wm_load_static_pointers(self);
  self->screen->bg_color = self->black;
  if (self->session->client_info->rdp_autologin)
  {
    fd = g_file_open(XRDP_CFG_FILE); /* xrdp.ini */
    if (fd > 0)
    {
      names = list_create();
      names->auto_free = 1;
      values = list_create();
      values->auto_free = 1;
      mod_data = (struct xrdp_mod_data*)
                     g_malloc(sizeof(struct xrdp_mod_data), 1);
      mod_data->names = list_create();
      mod_data->names->auto_free = 1;
      mod_data->values = list_create();
      mod_data->values->auto_free = 1;
      g_strncpy(section_name, self->session->client_info->domain, 255);
      if (section_name[0] == 0)
      {
        /* if no doamin is passed, use the first item in the xrdp.ini
           file thats not named 'globals' */
        file_read_sections(fd, names);
        for (index = 0; index < names->count; index++)
        {
          q = (char*)list_get_item(names, index);
          if (g_strncasecmp("globals", q, 8) != 0)
          {
            g_strncpy(section_name, q, 255);
            break;
          }
        }
      }
      list_clear(names);
      if (file_read_section(fd, section_name, names, values) == 0)
      {
        for (index = 0; index < names->count; index++)
        {
          q = (char*)list_get_item(names, index);
          r = (char*)list_get_item(values, index);
          if (g_strncmp("name", q, 255) == 0)
          {
            g_strcpy(mod_data->name, r);
          }
          else if (g_strncmp("lib", q, 255) == 0)
          {
            g_strcpy(mod_data->lib, r);
          }
          else
          {
            if (g_strncmp("password", q, 255) == 0)
            {
              list_add_item(mod_data->names, (long)g_strdup("password"));
              list_add_item(mod_data->values,
                     (long)g_strdup(self->session->client_info->password));
            }
            else if (g_strncmp("username", q, 255) == 0)
            {
              list_add_item(mod_data->names, (long)g_strdup("username"));
              list_add_item(mod_data->values,
                     (long)g_strdup(self->session->client_info->username));
            }
            else
            {
              list_add_item(mod_data->names, (long)g_strdup(q));
              list_add_item(mod_data->values, (long)g_strdup(r));
            }
          }
        }
        if (xrdp_wm_setup_mod1(self, mod_data) != 0)
        {
          /* totaly free mod */
          if (self->mod_exit != 0)
          {
            self->mod_exit(self->mod);
          }
          g_xrdp_sync(sync_unload, self->mod_handle, 0);
          self->mod = 0;
          self->mod_handle = 0;
          self->mod_init = 0;
          self->mod_exit = 0;
        }
        else if (xrdp_wm_setup_mod2(self, mod_data->names, mod_data->values) != 0)
        {
          /* totaly free mod */
          if (self->mod_exit != 0)
          {
            self->mod_exit(self->mod);
          }
          g_xrdp_sync(sync_unload, self->mod_handle, 0);
          self->mod = 0;
          self->mod_handle = 0;
          self->mod_init = 0;
          self->mod_exit = 0;
          /* don't close here so user can see error */
        }
        else /* close connection log window if connection is ok */
        {
          if (self->log_wnd != 0)
          {
            xrdp_bitmap_delete(self->log_wnd);
          }
        }
        if (!self->pro_layer->term)
        {
          if (self->mod != 0)
          {
            if (self->mod->sck != 0)
            {
              self->pro_layer->app_sck = self->mod->sck;
            }
          }
        }
      }
      list_delete(mod_data->names);
      list_delete(mod_data->values);
      list_delete(names);
      list_delete(values);
      g_free(mod_data);
      g_file_close(fd);
    }
  }
  else
  {
    xrdp_login_wnd_create(self);
    /* clear screen */
    xrdp_bitmap_invalidate(self->screen, 0);
    xrdp_wm_set_focused(self, self->login_window);
  }
  return 0;
}

/*****************************************************************************/
/* returns the number for rects visible for an area relative to a drawable */
/* putting the rects in region */
int APP_CC
xrdp_wm_get_vis_region(struct xrdp_wm* self, struct xrdp_bitmap* bitmap,
                       int x, int y, int cx, int cy,
                       struct xrdp_region* region, int clip_children)
{
  int i;
  struct xrdp_bitmap* p;
  struct xrdp_rect a;
  struct xrdp_rect b;

  /* area we are drawing */
  MAKERECT(a, bitmap->left + x, bitmap->top + y, cx, cy);
  p = bitmap->parent;
  while (p != 0)
  {
    RECTOFFSET(a, p->left, p->top);
    p = p->parent;
  }
  a.left = MAX(self->screen->left, a.left);
  a.top = MAX(self->screen->top, a.top);
  a.right = MIN(self->screen->left + self->screen->width, a.right);
  a.bottom = MIN(self->screen->top + self->screen->height, a.bottom);
  xrdp_region_add_rect(region, &a);
  if (clip_children)
  {
    /* loop through all windows in z order */
    for (i = 0; i < self->screen->child_list->count; i++)
    {
      p = (struct xrdp_bitmap*)list_get_item(self->screen->child_list, i);
      if (p == bitmap || p == bitmap->parent)
      {
        return 0;
      }
      MAKERECT(b, p->left, p->top, p->width, p->height);
      xrdp_region_subtract_rect(region, &b);
    }
  }
  return 0;
}

/*****************************************************************************/
/* return the window at x, y on the screen */
static struct xrdp_bitmap* APP_CC
xrdp_wm_at_pos(struct xrdp_bitmap* wnd, int x, int y,
               struct xrdp_bitmap** wnd1)
{
  int i;
  struct xrdp_bitmap* p;
  struct xrdp_bitmap* q;

  /* loop through all windows in z order */
  for (i = 0; i < wnd->child_list->count; i++)
  {
    p = (struct xrdp_bitmap*)list_get_item(wnd->child_list, i);
    if (x >= p->left && y >= p->top && x < p->left + p->width &&
        y < p->top + p->height)
    {
      if (wnd1 != 0)
      {
        *wnd1 = p;
      }
      q = xrdp_wm_at_pos(p, x - p->left, y - p->top, 0);
      if (q == 0)
      {
        return p;
      }
      else
      {
        return q;
      }
    }
  }
  return 0;
}

/*****************************************************************************/
static int APP_CC
xrdp_wm_xor_pat(struct xrdp_wm* self, int x, int y, int cx, int cy)
{
  self->painter->clip_children = 0;
  self->painter->rop = 0x5a;
  xrdp_painter_begin_update(self->painter);
  self->painter->use_clip = 0;
  self->painter->mix_mode = 1;
  self->painter->brush.pattern[0] = 0xaa;
  self->painter->brush.pattern[1] = 0x55;
  self->painter->brush.pattern[2] = 0xaa;
  self->painter->brush.pattern[3] = 0x55;
  self->painter->brush.pattern[4] = 0xaa;
  self->painter->brush.pattern[5] = 0x55;
  self->painter->brush.pattern[6] = 0xaa;
  self->painter->brush.pattern[7] = 0x55;
  self->painter->brush.x_orgin = 0;
  self->painter->brush.x_orgin = 0;
  self->painter->brush.style = 3;
  self->painter->bg_color = self->black;
  self->painter->fg_color = self->white;
  /* top */
  xrdp_painter_fill_rect(self->painter, self->screen, x, y, cx, 5);
  /* bottom */
  xrdp_painter_fill_rect(self->painter, self->screen, x, y + (cy - 5), cx, 5);
  /* left */
  xrdp_painter_fill_rect(self->painter, self->screen, x, y + 5, 5, cy - 10);
  /* right */
  xrdp_painter_fill_rect(self->painter, self->screen, x + (cx - 5), y + 5, 5,
                          cy - 10);
  xrdp_painter_end_update(self->painter);
  self->painter->rop = 0xcc;
  self->painter->clip_children = 1;
  self->painter->mix_mode = 0;
  return 0;
}

/*****************************************************************************/
/* this don't are about nothing, just copy the bits */
/* no clipping rects, no windows in the way, nothing */
int APP_CC
xrdp_wm_bitblt(struct xrdp_wm* self,
               struct xrdp_bitmap* dst, int dx, int dy,
               struct xrdp_bitmap* src, int sx, int sy,
               int sw, int sh, int rop)
{
//  int i;
//  int line_size;
//  int Bpp;
//  char* s;
//  char* d;

//  if (sw <= 0 || sh <= 0)
//    return 0;
  if (self->screen == dst && self->screen == src)
  { /* send a screen blt */
//    Bpp = (dst->bpp + 7) / 8;
//    line_size = sw * Bpp;
//    s = src->data + (sy * src->width + sx) * Bpp;
//    d = dst->data + (dy * dst->width + dx) * Bpp;
//    for (i = 0; i < sh; i++)
//    {
//      //g_memcpy(d, s, line_size);
//      s += src->width * Bpp;
//      d += dst->width * Bpp;
//    }
    libxrdp_orders_init(self->session);
    libxrdp_orders_screen_blt(self->session, dx, dy, sw, sh, sx, sy, rop, 0);
    libxrdp_orders_send(self->session);
  }
  return 0;
}

/*****************************************************************************/
/* return true is rect is totaly exposed going in reverse z order */
/* from wnd up */
int APP_CC
xrdp_wm_is_rect_vis(struct xrdp_wm* self, struct xrdp_bitmap* wnd,
                    struct xrdp_rect* rect)
{
  struct xrdp_rect wnd_rect;
  struct xrdp_bitmap* b;
  int i;;

  /* if rect is part off screen */
  if (rect->left < 0)
  {
    return 0;
  }
  if (rect->top < 0)
  {
    return 0;
  }
  if (rect->right >= self->screen->width)
  {
    return 0;
  }
  if (rect->bottom >= self->screen->height)
  {
    return 0;
  }

  i = list_index_of(self->screen->child_list, (long)wnd);
  i--;
  while (i >= 0)
  {
    b = (struct xrdp_bitmap*)list_get_item(self->screen->child_list, i);
    MAKERECT(wnd_rect, b->left, b->top, b->width, b->height);
    if (rect_intersect(rect, &wnd_rect, 0))
    {
      return 0;
    }
    i--;
  }
  return 1;
}

/*****************************************************************************/
int APP_CC
xrdp_wm_move_window(struct xrdp_wm* self, struct xrdp_bitmap* wnd,
                    int dx, int dy)
{
  struct xrdp_rect rect1;
  struct xrdp_rect rect2;
  struct xrdp_region* r;
  int i;

  MAKERECT(rect1, wnd->left, wnd->top, wnd->width, wnd->height);
  if (xrdp_wm_is_rect_vis(self, wnd, &rect1))
  {
    rect2 = rect1;
    RECTOFFSET(rect2, dx, dy);
    if (xrdp_wm_is_rect_vis(self, wnd, &rect2))
    { /* if both src and dst are unobscured, we can do a bitblt move */
      xrdp_wm_bitblt(self, self->screen, wnd->left + dx, wnd->top + dy,
                     self->screen, wnd->left, wnd->top,
                     wnd->width, wnd->height, 0xcc);
      wnd->left += dx;
      wnd->top += dy;
      r = xrdp_region_create(self);
      xrdp_region_add_rect(r, &rect1);
      xrdp_region_subtract_rect(r, &rect2);
      i = 0;
      while (xrdp_region_get_rect(r, i, &rect1) == 0)
      {
        xrdp_bitmap_invalidate(self->screen, &rect1);
        i++;
      }
      xrdp_region_delete(r);
      return 0;
    }
  }
  wnd->left += dx;
  wnd->top += dy;
  xrdp_bitmap_invalidate(self->screen, &rect1);
  xrdp_bitmap_invalidate(wnd, 0);
  return 0;
}

/*****************************************************************************/
int APP_CC
xrdp_wm_mouse_move(struct xrdp_wm* self, int x, int y)
{
  struct xrdp_bitmap* b;
  int boxx;
  int boxy;

  if (self == 0)
  {
    return 0;
  }
  if (x < 0)
  {
    x = 0;
  }
  if (y < 0)
  {
    y = 0;
  }
  if (x >= self->screen->width)
  {
    x = self->screen->width;
  }
  if (y >= self->screen->height)
  {
    y = self->screen->height;
  }
  self->mouse_x = x;
  self->mouse_y = y;
  if (self->dragging)
  {
    xrdp_painter_begin_update(self->painter);
    boxx = self->draggingx - self->draggingdx;
    boxy = self->draggingy - self->draggingdy;
    if (self->draggingxorstate)
    {
      xrdp_wm_xor_pat(self, boxx, boxy, self->draggingcx, self->draggingcy);
    }
    self->draggingx = x;
    self->draggingy = y;
    boxx = self->draggingx - self->draggingdx;
    boxy = self->draggingy - self->draggingdy;
    xrdp_wm_xor_pat(self, boxx, boxy, self->draggingcx, self->draggingcy);
    self->draggingxorstate = 1;
    xrdp_painter_end_update(self->painter);
    return 0;
  }
  b = xrdp_wm_at_pos(self->screen, x, y, 0);
  if (b == 0) /* if b is null, the movment must be over the screen */
  {
    if (self->screen->pointer != self->current_pointer)
    {
      xrdp_wm_set_pointer(self, self->screen->pointer);
      self->current_pointer = self->screen->pointer;
    }
    if (self->mod != 0) /* if screen is mod controled */
    {
      if (self->mod->mod_event != 0)
      {
        self->mod->mod_event(self->mod, WM_MOUSEMOVE, x, y, 0, 0);
      }
    }
  }
  if (self->button_down != 0)
  {
    if (b == self->button_down && self->button_down->state == 0)
    {
      self->button_down->state = 1;
      xrdp_bitmap_invalidate(self->button_down, 0);
    }
    else if (b != self->button_down)
    {
      self->button_down->state = 0;
      xrdp_bitmap_invalidate(self->button_down, 0);
    }
  }
  if (b != 0)
  {
    if (!self->dragging)
    {
      if (b->pointer != self->current_pointer)
      {
        xrdp_wm_set_pointer(self, b->pointer);
        self->current_pointer = b->pointer;
      }
      xrdp_bitmap_def_proc(b, WM_MOUSEMOVE,
                           xrdp_bitmap_from_screenx(b, x),
                           xrdp_bitmap_from_screeny(b, y));
      if (self->button_down == 0)
      {
        if (b->notify != 0)
        {
          b->notify(b->owner, b, 2, x, y);
        }
      }
    }
  }
  return 0;
}

/*****************************************************************************/
static int APP_CC
xrdp_wm_clear_popup(struct xrdp_wm* self)
{
  int i;
  struct xrdp_rect rect;
  //struct xrdp_bitmap* b;

  //b = 0;
  if (self->popup_wnd != 0)
  {
    //b = self->popup_wnd->popped_from;
    i = list_index_of(self->screen->child_list, (long)self->popup_wnd);
    list_remove_item(self->screen->child_list, i);
    MAKERECT(rect, self->popup_wnd->left, self->popup_wnd->top,
             self->popup_wnd->width, self->popup_wnd->height);
    xrdp_bitmap_invalidate(self->screen, &rect);
    xrdp_bitmap_delete(self->popup_wnd);
  }
  //xrdp_wm_set_focused(self, b->parent);
  return 0;
}

/*****************************************************************************/
int APP_CC
xrdp_wm_mouse_click(struct xrdp_wm* self, int x, int y, int but, int down)
{
  struct xrdp_bitmap* control;
  struct xrdp_bitmap* focus_out_control;
  struct xrdp_bitmap* wnd;
  int newx;
  int newy;
  int oldx;
  int oldy;

  if (self == 0)
  {
    return 0;
  }
  if (x < 0)
  {
    x = 0;
  }
  if (y < 0)
  {
    y = 0;
  }
  if (x >= self->screen->width)
  {
    x = self->screen->width;
  }
  if (y >= self->screen->height)
  {
    y = self->screen->height;
  }
  if (self->dragging && but == 1 && !down && self->dragging_window != 0)
  { /* if done dragging */
    self->draggingx = x;
    self->draggingy = y;
    newx = self->draggingx - self->draggingdx;
    newy = self->draggingy - self->draggingdy;
    oldx = self->dragging_window->left;
    oldy = self->dragging_window->top;
    /* draw xor box one more time */
    if (self->draggingxorstate)
    {
      xrdp_wm_xor_pat(self, newx, newy, self->draggingcx, self->draggingcy);
    }
    self->draggingxorstate = 0;
    /* move screen to new location */
    xrdp_wm_move_window(self, self->dragging_window, newx - oldx, newy - oldy);
    self->dragging_window = 0;
    self->dragging = 0;
  }
  wnd = 0;
  control = xrdp_wm_at_pos(self->screen, x, y, &wnd);
  if (control == 0)
  {
    if (self->mod != 0) /* if screen is mod controled */
    {
      if (self->mod->mod_event != 0)
      {
        if (but == 1 && down)
        {
          self->mod->mod_event(self->mod, WM_LBUTTONDOWN, x, y, 0, 0);
        }
        else if (but == 1 && !down)
        {
          self->mod->mod_event(self->mod, WM_LBUTTONUP, x, y, 0, 0);
        }
        if (but == 2 && down)
        {
          self->mod->mod_event(self->mod, WM_RBUTTONDOWN, x, y, 0, 0);
        }
        else if (but == 2 && !down)
        {
          self->mod->mod_event(self->mod, WM_RBUTTONUP, x, y, 0, 0);
        }
        if (but == 3 && down)
        {
          self->mod->mod_event(self->mod, WM_BUTTON3DOWN, x, y, 0, 0);
        }
        else if (but == 3 && !down)
        {
          self->mod->mod_event(self->mod, WM_BUTTON3UP, x, y, 0, 0);
        }
        if (but == 4)
        {
          self->mod->mod_event(self->mod, WM_BUTTON4DOWN,
                               self->mouse_x, self->mouse_y, 0, 0);
          self->mod->mod_event(self->mod, WM_BUTTON4UP,
                               self->mouse_x, self->mouse_y, 0, 0);
        }
        if (but == 5)
        {
          self->mod->mod_event(self->mod, WM_BUTTON5DOWN,
                               self->mouse_x, self->mouse_y, 0, 0);
          self->mod->mod_event(self->mod, WM_BUTTON5UP,
                               self->mouse_x, self->mouse_y, 0, 0);
        }
      }
    }
  }
  if (self->popup_wnd != 0)
  {
    if (self->popup_wnd == control && !down)
    {
      xrdp_bitmap_def_proc(self->popup_wnd, WM_LBUTTONUP, x, y);
      xrdp_wm_clear_popup(self);
      self->button_down = 0;
      return 0;
    }
    else if (self->popup_wnd != control && down)
    {
      xrdp_wm_clear_popup(self);
      self->button_down = 0;
      return 0;
    }
  }
  if (control != 0)
  {
    if (wnd != 0)
    {
      if (wnd->modal_dialog != 0) /* if window has a modal dialog */
      {
        return 0;
      }
      if (control == wnd)
      {
      }
      else if (control->tab_stop)
      {
        focus_out_control = wnd->focused_control;
        wnd->focused_control = control;
        xrdp_bitmap_invalidate(focus_out_control, 0);
        xrdp_bitmap_invalidate(control, 0);
      }
    }
    if ((control->type == WND_TYPE_BUTTON ||
         control->type == WND_TYPE_COMBO) &&
        but == 1 && !down && self->button_down == control)
    { /* if clicking up on a button that was clicked down */
      self->button_down = 0;
      control->state = 0;
      xrdp_bitmap_invalidate(control, 0);
      if (control->parent != 0)
      {
        if (control->parent->notify != 0)
        {
          /* control can be invalid after this */
          control->parent->notify(control->owner, control, 1, x, y);
        }
      }
    }
    else if ((control->type == WND_TYPE_BUTTON ||
              control->type == WND_TYPE_COMBO) &&
             but == 1 && down)
    { /* if clicking down on a button or combo */
      self->button_down = control;
      control->state = 1;
      xrdp_bitmap_invalidate(control, 0);
      if (control->type == WND_TYPE_COMBO)
      {
        xrdp_wm_pu(self, control);
      }
    }
    else if (but == 1 && down)
    {
      if (self->popup_wnd == 0)
      {
        xrdp_wm_set_focused(self, wnd);
        if (control->type == WND_TYPE_WND && y < (control->top + 21))
        { /* if dragging */
          if (self->dragging) /* rarely happens */
          {
            newx = self->draggingx - self->draggingdx;
            newy = self->draggingy - self->draggingdy;
            if (self->draggingxorstate)
            {
              xrdp_wm_xor_pat(self, newx, newy,
                              self->draggingcx, self->draggingcy);
            }
            self->draggingxorstate = 0;
          }
          self->dragging = 1;
          self->dragging_window = control;
          self->draggingorgx = control->left;
          self->draggingorgy = control->top;
          self->draggingx = x;
          self->draggingy = y;
          self->draggingdx = x - control->left;
          self->draggingdy = y - control->top;
          self->draggingcx = control->width;
          self->draggingcy = control->height;
        }
      }
    }
  }
  else
  {
    xrdp_wm_set_focused(self, 0);
  }
  /* no matter what, mouse is up, reset button_down */
  if (but == 1 && !down && self->button_down != 0)
  {
    self->button_down = 0;
  }
  return 0;
}

/*****************************************************************************/
int APP_CC
xrdp_wm_key(struct xrdp_wm* self, int device_flags, int scan_code)
{
  int msg;
  char c;

  scan_code = scan_code % 128;
  if (self->popup_wnd != 0)
  {
    xrdp_wm_clear_popup(self);
    return 0;
  }
  if (device_flags & 0x8000) /* key up */
  {
    self->keys[scan_code] = 0;
    msg = WM_KEYUP;
  }
  else /* key down */
  {
    self->keys[scan_code] = 1;
    msg = WM_KEYDOWN;
    switch (scan_code)
    {
      case 58: self->caps_lock = !self->caps_lock; break; /* caps lock */
      case 69: self->num_lock = !self->num_lock; break; /* num lock */
      case 70: self->scroll_lock = !self->scroll_lock; break; /* scroll lock */
    }
  }
  if (self->mod != 0)
  {
    if (self->mod->mod_event != 0)
    {
      c = get_char_from_scan_code(device_flags, scan_code, self->keys,
                                  self->caps_lock,
                                  self->num_lock,
                                  self->scroll_lock);
      if (c != 0)
      {
        self->mod->mod_event(self->mod, msg, c, 0xffff,
                             scan_code, device_flags);
      }
      else
      {
        self->mod->mod_event(self->mod, msg, scan_code, device_flags,
                             scan_code, device_flags);
      }
    }
  }
  else if (self->focused_window != 0)
  {
    xrdp_bitmap_def_proc(self->focused_window,
                         msg, scan_code, device_flags);
  }
  return 0;
}

/*****************************************************************************/
/* happens when client gets focus and sends key modifier info */
int APP_CC
xrdp_wm_key_sync(struct xrdp_wm* self, int device_flags, int key_flags)
{
  self->num_lock = 0;
  self->scroll_lock = 0;
  self->caps_lock = 0;
  if (key_flags & 1)
  {
    self->scroll_lock = 1;
  }
  if (key_flags & 2)
  {
    self->num_lock = 1;
  }
  if (key_flags & 4)
  {
    self->caps_lock = 1;
  }
  if (self->mod != 0)
  {
    if (self->mod->mod_event != 0)
    {
      self->mod->mod_event(self->mod, 17, key_flags, device_flags,
                           key_flags, device_flags);
    }
  }
  return 0;
}

/*****************************************************************************/
int APP_CC
xrdp_wm_pu(struct xrdp_wm* self, struct xrdp_bitmap* control)
{
  int x;
  int y;

  if (self == 0)
  {
    return 0;
  }
  if (control == 0)
  {
    return 0;
  }
  self->popup_wnd = xrdp_bitmap_create(control->width, 100,
                                       self->screen->bpp,
                                       WND_TYPE_SPECIAL, self);
  self->popup_wnd->popped_from = control;
  self->popup_wnd->parent = self->screen;
  self->popup_wnd->owner = self->screen;
  x = xrdp_bitmap_to_screenx(control, 0);
  y = xrdp_bitmap_to_screeny(control, 0);
  self->popup_wnd->left = x;
  self->popup_wnd->top = y + control->height;
  self->popup_wnd->item_index = control->item_index;
  list_insert_item(self->screen->child_list, 0, (long)self->popup_wnd);
  xrdp_bitmap_invalidate(self->popup_wnd, 0);
  return 0;
}

/*****************************************************************************/
static int APP_CC
xrdp_wm_process_input_mouse(struct xrdp_wm* self, int device_flags,
                            int x, int y)
{
  DEBUG(("mouse event flags %4.4x x %d y %d\r\n", device_flags, x, y));
  if (device_flags & MOUSE_FLAG_MOVE) /* 0x0800 */
  {
    xrdp_wm_mouse_move(self->pro_layer->wm, x, y);
  }
  if (device_flags & MOUSE_FLAG_BUTTON1) /* 0x1000 */
  {
    if (device_flags & MOUSE_FLAG_DOWN) /* 0x8000 */
    {
      xrdp_wm_mouse_click(self->pro_layer->wm, x, y, 1, 1);
    }
    else
    {
      xrdp_wm_mouse_click(self->pro_layer->wm, x, y, 1, 0);
    }
  }
  if (device_flags & MOUSE_FLAG_BUTTON2) /* 0x2000 */
  {
    if (device_flags & MOUSE_FLAG_DOWN) /* 0x8000 */
    {
      xrdp_wm_mouse_click(self->pro_layer->wm, x, y, 2, 1);
    }
    else
    {
      xrdp_wm_mouse_click(self->pro_layer->wm, x, y, 2, 0);
    }
  }
  if (device_flags & MOUSE_FLAG_BUTTON3) /* 0x4000 */
  {
    if (device_flags & MOUSE_FLAG_DOWN) /* 0x8000 */
    {
      xrdp_wm_mouse_click(self->pro_layer->wm, x, y, 3, 1);
    }
    else
    {
      xrdp_wm_mouse_click(self->pro_layer->wm, x, y, 3, 0);
    }
  }
  if (device_flags == MOUSE_FLAG_BUTTON4 || /* 0x0280 */
      device_flags == 0x0278)
  {
    xrdp_wm_mouse_click(self->pro_layer->wm, 0, 0, 4, 0);
  }
  if (device_flags == MOUSE_FLAG_BUTTON5 || /* 0x0380 */
      device_flags == 0x0388)
  {
    xrdp_wm_mouse_click(self->pro_layer->wm, 0, 0, 5, 0);
  }
  return 0;
}

/******************************************************************************/
/* this is the callbacks comming from libxrdp.so */
int
callback(long id, int msg, long param1, long param2, long param3, long param4)
{
  int rv;
  struct xrdp_wm* wm;
  struct xrdp_rect rect;

  if (id == 0) /* "id" should be "struct xrdp_process*" as long */
  {
    return 0;
  }
  wm = ((struct xrdp_process*)id)->wm;
  if (wm == 0)
  {
    return 0;
  }
  rv = 0;
  switch (msg)
  {
    case 0: /* RDP_INPUT_SYNCHRONIZE */
      rv = xrdp_wm_key_sync(wm, param3, param1);
      break;
    case 4: /* RDP_INPUT_SCANCODE */
      rv = xrdp_wm_key(wm, param3, param1);
      break;
    case 0x8001: /* RDP_INPUT_MOUSE */
      rv = xrdp_wm_process_input_mouse(wm, param3, param1, param2);
      break;
    case 0x4444: /* invalidate, this is not from RDP_DATA_PDU_INPUT */
                 /* like the rest, its from RDP_PDU_DATA with code 33 */
                 /* its the rdp client asking for a screen update */
      MAKERECT(rect, param1, param2, param3, param4);
      rv = xrdp_bitmap_invalidate(wm->screen, &rect);
      break;
  }
  return rv;
}