rxvt-unicode/src/rxvttoolkit.C

/*--------------------------------*-C-*---------------------------------*
 * File:        rxvttoolkit.C
 *----------------------------------------------------------------------*
 *
 * All portions of code are copyright by their respective author/s.
 * Copyright (c) 2003-2004 Marc Lehmann <pcg@goof.com>
 *
 * 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.
 *----------------------------------------------------------------------*/

#include "../config.h"
#include <rxvt.h>
#include <rxvttoolkit.h>

#include <unistd.h>
#include <fcntl.h>

#include <sys/utsname.h>

#ifndef NO_SLOW_LINK_SUPPORT
# include <sys/socket.h>
# include <sys/un.h>
#endif

#if XFT
# include <X11/extensions/Xrender.h>
#endif

const char *const xa_names[] =
{
  "TEXT",
  "COMPOUND_TEXT",
  "UTF8_STRING",
  "MULTIPLE",
  "TARGETS",
  "TIMESTAMP",
  "VT_SELECTION",
  "INCR",
  "WM_PROTOCOLS",
  "WM_DELETE_WINDOW",
  "CLIPBOARD",
  "AVERAGE_WIDTH",
  "WEIGHT_NAME",
  "SLANT",
  "CHARSET_REGISTRY",
  "CHARSET_ENCODING",
#if ENABLE_FRILLS
  "_MOTIF_WM_HINTS",
#endif
#if ENABLE_EWMH
  "_NET_WM_PID",
  "_NET_WM_NAME",
  "_NET_WM_ICON_NAME",
  "_NET_WM_PING",
#endif
#if USE_XIM
  "WM_LOCALE_NAME",
  "XIM_SERVERS",
#endif
#ifdef TRANSPARENT
  "_XROOTPMAP_ID",
  "ESETROOT_PMAP_ID",
#endif
#if ENABLE_XEMBED
  "_XEMBED",
  "_XEMBED_INFO",
#endif
#if !ENABLE_MINIMAL
  "SCREEN_RESOURCES",
  "XDCCC_LINEAR_RGB_CORRECTION",
  "XDCCC_LINEAR_RGB_MATRICES",
  "WM_COLORMAP_WINDOWS",
  "WM_STATE",
  "cursor",
# if USE_XIM
  "TRANSPORT",
  "LOCALES",
  "_XIM_PROTOCOL",
  "_XIM_XCONNECT",
  "_XIM_MOREDATA",
# endif
#endif
};

/////////////////////////////////////////////////////////////////////////////

refcounted::refcounted (const char *id)
{
  this->id = strdup (id);
}

refcounted::~refcounted ()
{
  free (id);
}

template<class T>
T *refcache<T>::get (const char *id)
{
  for (T **i = this->begin (); i < this->end (); ++i)
    {
      if (!strcmp (id, (*i)->id))
        {
          ++(*i)->referenced;
          (*i)->ref_next ();
          return *i;
        }
    }

  T *obj = new T (id);

  if (obj && obj->ref_init ())
    {
      obj->referenced = 1;
      this->push_back (obj);
      return obj;
    }
  else
    {
      delete obj;
      return 0;
    }
}

template<class T>
void refcache<T>::put (T *obj)
{
  if (!obj)
    return;

  if (!--obj->referenced)
    {
      this->erase (find (this->begin (), this->end (), obj));
      delete obj;
    }
}

template<class T>
void refcache<T>::clear ()
{
  while (this->size ())
    put (*this->begin ());
}

/////////////////////////////////////////////////////////////////////////////

#ifdef USE_XIM

static void
#if XIMCB_PROTO_BROKEN
im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3)
#else
im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
#endif
{
  rxvt_xim *xim = (rxvt_xim *)client_data;
  rxvt_display *display = xim->display;

  xim->xim = 0;

  display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
  display->im_change_cb ();
}

bool
rxvt_xim::ref_init ()
{
  display = GET_R->display; //HACK: TODO

  xim = XOpenIM (display->display, NULL, NULL, NULL);

  if (!xim)
    return false;

  XIMCallback ximcallback;
  ximcallback.client_data = (XPointer)this;
  ximcallback.callback = im_destroy_cb;

  XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);

  return true;
}

rxvt_xim::~rxvt_xim ()
{
  if (xim)
    XCloseIM (xim);
}

#endif

/////////////////////////////////////////////////////////////////////////////

void
rxvt_screen::set (rxvt_display *disp)
{
  display = disp;
  xdisp   = disp->display;

  Screen *screen = ScreenOfDisplay (xdisp, disp->screen);

  depth   = DefaultDepthOfScreen    (screen);
  visual  = DefaultVisualOfScreen   (screen);
  cmap    = DefaultColormapOfScreen (screen);
}

void
rxvt_screen::set (rxvt_display *disp, int bitdepth)
{
  set (disp);

#if XFT
  XVisualInfo vinfo;

  if (XMatchVisualInfo (xdisp, display->screen, bitdepth, TrueColor, &vinfo))
    {
      depth  = bitdepth;
      visual = vinfo.visual;
      cmap   = XCreateColormap (xdisp, disp->root, visual, AllocNone);
    }
#endif
}

void
rxvt_screen::clear ()
{
  if (cmap != DefaultColormapOfScreen (ScreenOfDisplay (xdisp, display->screen)))
    XFreeColormap (xdisp, cmap);
}

/////////////////////////////////////////////////////////////////////////////

rxvt_display::rxvt_display (const char *id)
: refcounted (id)
, x_ev (this, &rxvt_display::x_cb)
, selection_owner (0)
{
}

XrmDatabase
rxvt_display::get_resources ()
{
  char *homedir = (char *)getenv ("HOME");
  char fname[1024];

  /*
   * get resources using the X library function
   */
  char *displayResource, *xe;
  XrmDatabase database, rdb1;

  database = NULL;

  // for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20

  // 6. System wide per application default file.

  /* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */
  if ((xe = (char *)getenv ("XAPPLRESDIR")))
    {
      snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS);

      if ((rdb1 = XrmGetFileDatabase (fname)))
        XrmMergeDatabases (rdb1, &database);
    }

  // 5. User's per application default file.
  // none

  // 4. User's defaults file.
  /* Get any Xserver defaults */
  displayResource = XResourceManagerString (display);

  if (displayResource != NULL)
    {
      if ((rdb1 = XrmGetStringDatabase (displayResource)))
        XrmMergeDatabases (rdb1, &database);
    }
  else if (homedir)
    {
      snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir);

      if ((rdb1 = XrmGetFileDatabase (fname)))
        XrmMergeDatabases (rdb1, &database);
    }

  /* Get screen specific resources */
  displayResource = XScreenResourceString (ScreenOfDisplay (display, screen));

  if (displayResource != NULL)
    {
      if ((rdb1 = XrmGetStringDatabase (displayResource)))
        /* Merge with screen-independent resources */
        XrmMergeDatabases (rdb1, &database);

      XFree (displayResource);
    }

  // 3. User's per host defaults file
  /* Add in XENVIRONMENT file */
  if ((xe = (char *)getenv ("XENVIRONMENT"))
      && (rdb1 = XrmGetFileDatabase (xe)))
    XrmMergeDatabases (rdb1, &database);
  else if (homedir)
    {
      struct utsname un;

      if (!uname (&un))
        {
          snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename);

          if ((rdb1 = XrmGetFileDatabase (fname)))
            XrmMergeDatabases (rdb1, &database);
        }
    }

  return database;
}

bool rxvt_display::ref_init ()
{
#ifdef LOCAL_X_IS_UNIX
  if (id[0] == ':')
    {
      val = rxvt_malloc (5 + strlen (id) + 1);
      strcpy (val, "unix/");
      strcat (val, id);
      display = XOpenDisplay (val);
      free (val);
    }
  else
#endif
    display = 0;

  if (!display)
    display = XOpenDisplay (id);

  if (!display)
    return false;

  screen = DefaultScreen (display);
  root   = DefaultRootWindow (display);

  assert (sizeof (xa_names) / sizeof (char *) == NUM_XA);
  XInternAtoms (display, (char **)xa_names, NUM_XA, False, xa);

  XrmSetDatabase (display, get_resources ());

#ifdef POINTER_BLANK
  XColor blackcolour;
  blackcolour.red   = 0;
  blackcolour.green = 0;
  blackcolour.blue  = 0;
  Font f = XLoadFont (display, "fixed");
  blank_cursor = XCreateGlyphCursor (display, f, f, ' ', ' ',
                                     &blackcolour, &blackcolour);
  XUnloadFont (display, f);
#endif

  int fd = XConnectionNumber (display);

#ifndef NO_SLOW_LINK_SUPPORT
  // try to detect wether we have a local connection.
  // assume unix domains socket == local, everything else not
  // TODO: might want to check for inet/127.0.0.1
  is_local = 0;
  sockaddr_un sa;
  socklen_t sl = sizeof (sa);

  if (!getsockname (fd, (sockaddr *)&sa, &sl))
    is_local = sa.sun_family == AF_LOCAL;
#endif

  x_ev.start (fd, EVENT_READ);
  fcntl (fd, F_SETFD, FD_CLOEXEC);

  XSelectInput (display, root, PropertyChangeMask);

  flush ();

  return true;
}

void
rxvt_display::ref_next ()
{
  // TODO: somehow check wether the database files/resources changed
  // before re-loading/parsing
  XrmDestroyDatabase (XrmGetDatabase (display));
  XrmSetDatabase (display, get_resources ());
}

rxvt_display::~rxvt_display ()
{
  if (!display)
    return;

#ifdef POINTER_BLANK
  XFreeCursor (display, blank_cursor);
#endif
  x_ev.stop ();
#ifdef USE_XIM
  xims.clear ();
#endif
  XCloseDisplay (display);
}

#ifdef USE_XIM
void rxvt_display::im_change_cb ()
{
  for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
    (*i)->call ();
}

void rxvt_display::im_change_check ()
{
  // try to only call im_change_cb when a new input method
  // registers, as xlib crashes due to a race otherwise.
  Atom actual_type, *atoms;
  int actual_format;
  unsigned long nitems, bytes_after;

  if (XGetWindowProperty (display, root, xa[XA_XIM_SERVERS], 0L, 1000000L,
                          False, XA_ATOM, &actual_type, &actual_format,
                          &nitems, &bytes_after, (unsigned char **)&atoms)
      != Success )
    return;

  if (actual_type == XA_ATOM  && actual_format == 32)
    for (int i = 0; i < nitems; i++)
      if (XGetSelectionOwner (display, atoms[i]))
        {
          im_change_cb ();
          break;
        }

  XFree (atoms);
}
#endif

void rxvt_display::x_cb (io_watcher &w, short revents)
{
  do
    {
      XEvent xev;
      XNextEvent (display, &xev);

#ifdef USE_XIM
      if (!XFilterEvent (&xev, None))
        {
          if (xev.type == PropertyNotify
              && xev.xany.window == root
              && xev.xproperty.atom == xa[XA_XIM_SERVERS])
            im_change_check ();
#endif
          for (int i = xw.size (); i--; )
            {
              if (!xw[i])
                xw.erase_unordered (i);
              else if (xw[i]->window == xev.xany.window)
                xw[i]->call (xev);
            }
#ifdef USE_XIM
        }
#endif
    }
  while (XEventsQueued (display, QueuedAlready));

  XFlush (display);
}

void rxvt_display::flush ()
{
  if (XEventsQueued (display, QueuedAlready))
    x_cb (x_ev, EVENT_READ);

  XFlush (display);
}

void rxvt_display::reg (xevent_watcher *w)
{
  xw.push_back (w);
  w->active = xw.size ();
}

void rxvt_display::unreg (xevent_watcher *w)
{
  if (w->active)
    xw[w->active - 1] = 0;
}

void rxvt_display::set_selection_owner (rxvt_term *owner)
{
  if (selection_owner && selection_owner != owner)
    selection_owner->selection_clear ();

  selection_owner = owner;
}

#ifdef USE_XIM
void rxvt_display::reg (im_watcher *w)
{
  imw.push_back (w);
}

void rxvt_display::unreg (im_watcher *w)
{
  imw.erase (find (imw.begin (), imw.end (), w));
}

rxvt_xim *rxvt_display::get_xim (const char *locale, const char *modifiers)
{
  char *id;
  int l, m;

  l = strlen (locale);
  m = strlen (modifiers);

  if (!(id = (char *)malloc (l + m + 2)))
    return 0;

  memcpy (id, locale, l); id[l] = '\n';
  memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;

  rxvt_xim *xim = xims.get (id);

  free (id);

  return xim;
}

void rxvt_display::put_xim (rxvt_xim *xim)
{
#if XLIB_IS_RACEFREE
  xims.put (xim);
#endif
}
#endif

Atom rxvt_display::atom (const char *name)
{
  return XInternAtom (display, name, False);
}

/////////////////////////////////////////////////////////////////////////////

template class refcache<rxvt_display>;
refcache<rxvt_display> displays;

/////////////////////////////////////////////////////////////////////////////
 
bool
rxvt_color::alloc (rxvt_screen *screen, rxvt_rgba rgba)
{
#if XFT
  XRenderPictFormat *format;

  // FUCKING Xft gets it wrong, of course, so work around it
  // transparency users should eat shit and die, and then
  // XRenderQueryPictIndexValues themselves plenty.
  if ((screen->visual->c_class == TrueColor || screen->visual->c_class == DirectColor)
      && (format = XRenderFindVisualFormat (screen->xdisp, screen->visual)))
    {
      // the fun lies in doing everything manually...
      c.color.red   = rgba.r;
      c.color.green = rgba.g;
      c.color.blue  = rgba.b;
      c.color.alpha = rgba.a;

      c.pixel = ((rgba.r * format->direct.redMask   / rxvt_rgba::MAX_CC) << format->direct.red  )
              | ((rgba.g * format->direct.greenMask / rxvt_rgba::MAX_CC) << format->direct.green)
              | ((rgba.b * format->direct.blueMask  / rxvt_rgba::MAX_CC) << format->direct.blue )
              | ((rgba.a * format->direct.alphaMask / rxvt_rgba::MAX_CC) << format->direct.alpha);

      return true;
    }
  else
    {
      XRenderColor d;

      d.red   = rgba.r;
      d.green = rgba.g;
      d.blue  = rgba.b;
      d.alpha = rgba.a;

      return XftColorAllocValue (screen->xdisp, screen->visual, screen->cmap, &d, &c);
    }
#else
  if (screen->visual->c_class == TrueColor || screen->visual->c_class == DirectColor)
    {
      p = (rgba.r * (screen->visual->red_mask   >> ctz (screen->visual->red_mask  ))
                  / rxvt_rgba::MAX_CC) << ctz (screen->visual->red_mask  )
        | (rgba.g * (screen->visual->green_mask >> ctz (screen->visual->green_mask))
                  / rxvt_rgba::MAX_CC) << ctz (screen->visual->green_mask)
        | (rgba.b * (screen->visual->blue_mask  >> ctz (screen->visual->blue_mask ))
                  / rxvt_rgba::MAX_CC) << ctz (screen->visual->blue_mask );

      return true;
    }
  else
    {
      XColor xc;

      xc.red   = rgba.r;
      xc.green = rgba.g;
      xc.blue  = rgba.b;

      if (XAllocColor (screen->xdisp, screen->cmap, &xc))
        {
          p = xc.pixel;
          return true;
        }
      else
        p = (rgba.r + rgba.g + rgba.b) > 128*3
            ? WhitePixelOfScreen (DefaultScreenOfDisplay (screen->xdisp))
            : BlackPixelOfScreen (DefaultScreenOfDisplay (screen->xdisp));
    }
#endif

  return false;
}

bool
rxvt_color::set (rxvt_screen *screen, const char *name)
{
  int l = strlen (name);
  rxvt_rgba r;
  char eos;
  int mult;
  XColor xc, xc_exact;

  // parse a number of non-standard ARGB colour specifications
  if (     l == 1+4*1 && 4 == sscanf (name, "#%1hx%1hx%1hx%1hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
    mult = rxvt_rgba::MAX_CC / 0x0010;
  else if (l == 1+4*2 && 4 == sscanf (name, "#%2hx%2hx%2hx%2hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
    mult = rxvt_rgba::MAX_CC / 0x0100;
  else if (l == 1+4*4 && 4 == sscanf (name, "#%4hx%4hx%4hx%4hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
    mult = rxvt_rgba::MAX_CC / 0x0100;
  else if (l == 4+5*4 && 4 == sscanf (name, "rgba:%hx/%hx/%hx/%hx%c", &r.r, &r.g, &r.b, &r.a, &eos))
    mult = rxvt_rgba::MAX_CC / 0xffff;
  else if (XParseColor (screen->xdisp, screen->cmap, name, &xc))
    {
      r.r = xc.red;
      r.g = xc.green;
      r.b = xc.blue;
      mult = rxvt_rgba::MAX_CC / 0xffff;
    }
  else
    {
      rxvt_warn ("failed to allocate color '%s', using pink instead.\n", name);
      r.r = 255;
      r.g = 105;
      r.b = 180;
      mult = rxvt_rgba::MAX_CC / 0x00ff;
    }

  r.r *= mult; r.g *= mult; r.b *= mult; r.a *= mult;

  return set (screen, r);
}

bool
rxvt_color::set (rxvt_screen *screen, rxvt_rgba rgba)
{
  bool got = alloc (screen, rgba);

#if !ENABLE_MINIMAL
  int cmap_size = screen->visual->map_entries;

  if (!got
      && screen->visual->c_class == PseudoColor
      && cmap_size < 4096)
    {
      XColor *colors = new XColor [screen->visual->map_entries];

      for (int i = 0; i < cmap_size; i++)
        colors [i].pixel = i;
 
      XQueryColors (screen->xdisp, screen->cmap, colors, cmap_size);

      int diff = 0x7fffffffUL;
      XColor *best = colors;

      for (int i = 0; i < cmap_size; i++)
        {
          int d = (squared_diff<int> (rgba.r >> 2, colors [i].red   >> 2))
                + (squared_diff<int> (rgba.g >> 2, colors [i].green >> 2))
                + (squared_diff<int> (rgba.b >> 2, colors [i].blue  >> 2));

          if (d < diff)
            {
              diff = d;
              best = colors + i;
            }
        }

      //rxvt_warn ("could not allocate %04x %04x %04x, getting %04x %04x %04x instead (%d)\n",
      //    rgba.r, rgba.g, rgba.b, best->red, best->green, best->blue, diff);
          
      got = alloc (screen, rxvt_rgba (best->red, best->green, best->blue));

      delete colors;
    }
#endif

  return got;
}

void 
rxvt_color::get (rxvt_screen *screen, rxvt_rgba &rgba)
{
#if XFT
  rgba.r = c.color.red;
  rgba.g = c.color.green;
  rgba.b = c.color.blue;
  rgba.a = c.color.alpha;
#else
  XColor c;

  c.pixel = p;
  XQueryColor (screen->xdisp, screen->cmap, &c);

  rgba.r = c.red;
  rgba.g = c.green;
  rgba.b = c.blue;
  rgba.a = rxvt_rgba::MAX_CC;
#endif
}

void 
rxvt_color::free (rxvt_screen *screen)
{
#if XFT
  XftColorFree (screen->xdisp, screen->visual, screen->cmap, &c);
#else
  XFreeColors (screen->xdisp, screen->cmap, &p, 1, AllPlanes);
#endif
}

rxvt_color
rxvt_color::fade (rxvt_screen *screen, int percent)
{
  rxvt_color faded;

  rxvt_rgba c;
  get (screen, c);

  c.r = lerp (0, c.r, percent);
  c.g = lerp (0, c.g, percent);
  c.b = lerp (0, c.b, percent);

  faded.set (screen, c);

  return faded;
}

rxvt_color
rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &fadeto)
{
  rxvt_rgba c, fc;
  rxvt_color faded;
  
  get (screen, c);
  fadeto.get (screen, fc);

  faded.set (
    screen,
    rxvt_rgba (
      lerp (fc.r, c.r, percent),
      lerp (fc.g, c.g, percent),
      lerp (fc.b, c.b, percent),
      lerp (fc.a, c.a, percent)
    )
  );

  return faded;
}

Revision:	1.38
Committed:	Mon Jan 30 19:46:13 2006 UTC (18 years, 3 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.37:	+100 -48 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	/---------------------------------C----------------------------------
2	root	1.5	* File: rxvttoolkit.C
3	root	1.1	----------------------------------------------------------------------
4			*
5			* All portions of code are copyright by their respective author/s.
6			* Copyright (c) 2003-2004 Marc Lehmann <pcg@goof.com>
7			*
8			* This program is free software; you can redistribute it and/or modify
9			* it under the terms of the GNU General Public License as published by
10			* the Free Software Foundation; either version 2 of the License, or
11			* (at your option) any later version.
12			*
13			* This program is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16			* GNU General Public License for more details.
17			*
18			* You should have received a copy of the GNU General Public License
19			* along with this program; if not, write to the Free Software
20			* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21			----------------------------------------------------------------------/
22
23			#include "../config.h"
24			#include <rxvt.h>
25			#include <rxvttoolkit.h>
26
27			#include <unistd.h>
28			#include <fcntl.h>
29
30	root	1.23	#include <sys/utsname.h>
31
32	root	1.1	#ifndef NO_SLOW_LINK_SUPPORT
33			# include <sys/socket.h>
34			# include <sys/un.h>
35			#endif
36
37	root	1.31	#if XFT
38			# include <X11/extensions/Xrender.h>
39			#endif
40
41	root	1.25	const char *const xa_names[] =
42	root	1.34	{
43			"TEXT",
44			"COMPOUND_TEXT",
45			"UTF8_STRING",
46			"MULTIPLE",
47			"TARGETS",
48			"TIMESTAMP",
49			"VT_SELECTION",
50			"INCR",
51			"WM_PROTOCOLS",
52			"WM_DELETE_WINDOW",
53			"CLIPBOARD",
54			"AVERAGE_WIDTH",
55			"WEIGHT_NAME",
56			"SLANT",
57			"CHARSET_REGISTRY",
58			"CHARSET_ENCODING",
59	root	1.25	#if ENABLE_FRILLS
60	root	1.34	"_MOTIF_WM_HINTS",
61	root	1.25	#endif
62			#if ENABLE_EWMH
63	root	1.34	"_NET_WM_PID",
64			"_NET_WM_NAME",
65			"_NET_WM_ICON_NAME",
66			"_NET_WM_PING",
67	root	1.25	#endif
68			#if USE_XIM
69	root	1.34	"WM_LOCALE_NAME",
70			"XIM_SERVERS",
71	root	1.25	#endif
72			#ifdef TRANSPARENT
73	root	1.34	"_XROOTPMAP_ID",
74			"ESETROOT_PMAP_ID",
75	root	1.25	#endif
76			#if ENABLE_XEMBED
77	root	1.34	"_XEMBED",
78			"_XEMBED_INFO",
79			#endif
80			#if !ENABLE_MINIMAL
81			"SCREEN_RESOURCES",
82			"XDCCC_LINEAR_RGB_CORRECTION",
83			"XDCCC_LINEAR_RGB_MATRICES",
84			"WM_COLORMAP_WINDOWS",
85			"WM_STATE",
86	root	1.38	"cursor",
87			# if USE_XIM
88			"TRANSPORT",
89			"LOCALES",
90			"_XIM_PROTOCOL",
91			"_XIM_XCONNECT",
92			"_XIM_MOREDATA",
93			# endif
94	root	1.25	#endif
95	root	1.34	};
96	root	1.25
97			/////////////////////////////////////////////////////////////////////////////
98
99	root	1.1	refcounted::refcounted (const char *id)
100			{
101	root	1.2	this->id = strdup (id);
102	root	1.1	}
103
104			refcounted::~refcounted ()
105			{
106			free (id);
107			}
108
109			template<class T>
110			T refcache<T>::get (const char id)
111			{
112			for (T **i = this->begin (); i < this->end (); ++i)
113			{
114			if (!strcmp (id, (*i)->id))
115			{
116	root	1.23	++(*i)->referenced;
117			(*i)->ref_next ();
118	root	1.1	return *i;
119			}
120			}
121
122			T *obj = new T (id);
123
124	root	1.23	if (obj && obj->ref_init ())
125	root	1.1	{
126	root	1.23	obj->referenced = 1;
127	root	1.1	this->push_back (obj);
128			return obj;
129			}
130			else
131			{
132			delete obj;
133			return 0;
134			}
135			}
136
137			template<class T>
138			void refcache<T>::put (T *obj)
139			{
140			if (!obj)
141			return;
142
143			if (!--obj->referenced)
144			{
145			this->erase (find (this->begin (), this->end (), obj));
146			delete obj;
147			}
148			}
149
150			template<class T>
151	root	1.12	void refcache<T>::clear ()
152	root	1.1	{
153			while (this->size ())
154			put (*this->begin ());
155			}
156
157			/////////////////////////////////////////////////////////////////////////////
158
159			#ifdef USE_XIM
160	root	1.24
161	root	1.1	static void
162			#if XIMCB_PROTO_BROKEN
163			im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3)
164			#else
165			im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
166			#endif
167			{
168			rxvt_xim xim = (rxvt_xim )client_data;
169			rxvt_display *display = xim->display;
170
171	root	1.5	xim->xim = 0;
172
173	root	1.1	display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
174			display->im_change_cb ();
175			}
176
177	root	1.23	bool
178			rxvt_xim::ref_init ()
179	root	1.1	{
180			display = GET_R->display; //HACK: TODO
181
182			xim = XOpenIM (display->display, NULL, NULL, NULL);
183
184			if (!xim)
185			return false;
186
187			XIMCallback ximcallback;
188			ximcallback.client_data = (XPointer)this;
189			ximcallback.callback = im_destroy_cb;
190
191			XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
192
193			return true;
194			}
195
196			rxvt_xim::~rxvt_xim ()
197			{
198			if (xim)
199			XCloseIM (xim);
200			}
201	root	1.24
202	root	1.1	#endif
203
204			/////////////////////////////////////////////////////////////////////////////
205
206	root	1.26	void
207			rxvt_screen::set (rxvt_display *disp)
208			{
209			display = disp;
210	root	1.27	xdisp = disp->display;
211	root	1.26
212			Screen *screen = ScreenOfDisplay (xdisp, disp->screen);
213
214	root	1.27	depth = DefaultDepthOfScreen (screen);
215			visual = DefaultVisualOfScreen (screen);
216			cmap = DefaultColormapOfScreen (screen);
217	root	1.26	}
218
219			void
220	root	1.28	rxvt_screen::set (rxvt_display *disp, int bitdepth)
221	root	1.26	{
222			set (disp);
223
224	root	1.31	#if XFT
225	root	1.26	XVisualInfo vinfo;
226
227	root	1.28	if (XMatchVisualInfo (xdisp, display->screen, bitdepth, TrueColor, &vinfo))
228	root	1.26	{
229	root	1.28	depth = bitdepth;
230			visual = vinfo.visual;
231			cmap = XCreateColormap (xdisp, disp->root, visual, AllocNone);
232	root	1.26	}
233	root	1.31	#endif
234	root	1.26	}
235
236			void
237			rxvt_screen::clear ()
238			{
239			if (cmap != DefaultColormapOfScreen (ScreenOfDisplay (xdisp, display->screen)))
240			XFreeColormap (xdisp, cmap);
241			}
242
243			/////////////////////////////////////////////////////////////////////////////
244
245	root	1.1	rxvt_display::rxvt_display (const char *id)
246			: refcounted (id)
247			, x_ev (this, &rxvt_display::x_cb)
248			, selection_owner (0)
249			{
250			}
251
252	root	1.23	XrmDatabase
253			rxvt_display::get_resources ()
254			{
255			char homedir = (char )getenv ("HOME");
256			char fname[1024];
257
258			/*
259			* get resources using the X library function
260			*/
261			char displayResource, xe;
262			XrmDatabase database, rdb1;
263
264			database = NULL;
265
266			// for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20
267
268			// 6. System wide per application default file.
269
270			/* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */
271			if ((xe = (char *)getenv ("XAPPLRESDIR")))
272			{
273			snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS);
274
275			if ((rdb1 = XrmGetFileDatabase (fname)))
276			XrmMergeDatabases (rdb1, &database);
277			}
278
279			// 5. User's per application default file.
280			// none
281
282			// 4. User's defaults file.
283			/* Get any Xserver defaults */
284			displayResource = XResourceManagerString (display);
285
286			if (displayResource != NULL)
287			{
288			if ((rdb1 = XrmGetStringDatabase (displayResource)))
289			XrmMergeDatabases (rdb1, &database);
290			}
291			else if (homedir)
292			{
293			snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir);
294
295			if ((rdb1 = XrmGetFileDatabase (fname)))
296			XrmMergeDatabases (rdb1, &database);
297			}
298
299			/* Get screen specific resources */
300			displayResource = XScreenResourceString (ScreenOfDisplay (display, screen));
301
302			if (displayResource != NULL)
303			{
304			if ((rdb1 = XrmGetStringDatabase (displayResource)))
305			/* Merge with screen-independent resources */
306			XrmMergeDatabases (rdb1, &database);
307
308			XFree (displayResource);
309			}
310
311			// 3. User's per host defaults file
312			/* Add in XENVIRONMENT file */
313			if ((xe = (char *)getenv ("XENVIRONMENT"))
314			&& (rdb1 = XrmGetFileDatabase (xe)))
315			XrmMergeDatabases (rdb1, &database);
316			else if (homedir)
317			{
318			struct utsname un;
319
320			if (!uname (&un))
321			{
322			snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename);
323
324			if ((rdb1 = XrmGetFileDatabase (fname)))
325			XrmMergeDatabases (rdb1, &database);
326			}
327			}
328
329			return database;
330			}
331
332			bool rxvt_display::ref_init ()
333	root	1.1	{
334	root	1.14	#ifdef LOCAL_X_IS_UNIX
335			if (id[0] == ':')
336			{
337			val = rxvt_malloc (5 + strlen (id) + 1);
338			strcpy (val, "unix/");
339			strcat (val, id);
340			display = XOpenDisplay (val);
341			free (val);
342			}
343			else
344	root	1.15	#endif
345	root	1.14	display = 0;
346
347			if (!display)
348			display = XOpenDisplay (id);
349	root	1.1
350			if (!display)
351			return false;
352
353			screen = DefaultScreen (display);
354			root = DefaultRootWindow (display);
355
356	root	1.25	assert (sizeof (xa_names) / sizeof (char *) == NUM_XA);
357			XInternAtoms (display, (char **)xa_names, NUM_XA, False, xa);
358
359	root	1.23	XrmSetDatabase (display, get_resources ());
360	root	1.1
361	root	1.12	#ifdef POINTER_BLANK
362			XColor blackcolour;
363			blackcolour.red = 0;
364			blackcolour.green = 0;
365			blackcolour.blue = 0;
366			Font f = XLoadFont (display, "fixed");
367			blank_cursor = XCreateGlyphCursor (display, f, f, ' ', ' ',
368			&blackcolour, &blackcolour);
369			XUnloadFont (display, f);
370			#endif
371
372	root	1.23	int fd = XConnectionNumber (display);
373
374			#ifndef NO_SLOW_LINK_SUPPORT
375			// try to detect wether we have a local connection.
376			// assume unix domains socket == local, everything else not
377			// TODO: might want to check for inet/127.0.0.1
378			is_local = 0;
379			sockaddr_un sa;
380			socklen_t sl = sizeof (sa);
381
382			if (!getsockname (fd, (sockaddr *)&sa, &sl))
383			is_local = sa.sun_family == AF_LOCAL;
384			#endif
385
386	root	1.1	x_ev.start (fd, EVENT_READ);
387			fcntl (fd, F_SETFD, FD_CLOEXEC);
388
389			XSelectInput (display, root, PropertyChangeMask);
390
391			flush ();
392
393			return true;
394			}
395
396	root	1.23	void
397			rxvt_display::ref_next ()
398			{
399			// TODO: somehow check wether the database files/resources changed
400			// before re-loading/parsing
401			XrmDestroyDatabase (XrmGetDatabase (display));
402			XrmSetDatabase (display, get_resources ());
403			}
404
405	root	1.1	rxvt_display::~rxvt_display ()
406			{
407	root	1.22	if (!display)
408			return;
409
410	root	1.21	#ifdef POINTER_BLANK
411			XFreeCursor (display, blank_cursor);
412			#endif
413	root	1.1	x_ev.stop ();
414	root	1.12	#ifdef USE_XIM
415			xims.clear ();
416			#endif
417	root	1.22	XCloseDisplay (display);
418	root	1.1	}
419
420			#ifdef USE_XIM
421			void rxvt_display::im_change_cb ()
422			{
423			for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
424			(*i)->call ();
425			}
426	root	1.5
427			void rxvt_display::im_change_check ()
428			{
429	root	1.13	// try to only call im_change_cb when a new input method
430	root	1.5	// registers, as xlib crashes due to a race otherwise.
431			Atom actual_type, *atoms;
432			int actual_format;
433			unsigned long nitems, bytes_after;
434
435	root	1.25	if (XGetWindowProperty (display, root, xa[XA_XIM_SERVERS], 0L, 1000000L,
436	root	1.5	False, XA_ATOM, &actual_type, &actual_format,
437			&nitems, &bytes_after, (unsigned char **)&atoms)
438			!= Success )
439			return;
440
441			if (actual_type == XA_ATOM && actual_format == 32)
442			for (int i = 0; i < nitems; i++)
443			if (XGetSelectionOwner (display, atoms[i]))
444			{
445			im_change_cb ();
446			break;
447			}
448
449			XFree (atoms);
450			}
451	root	1.1	#endif
452
453			void rxvt_display::x_cb (io_watcher &w, short revents)
454			{
455			do
456			{
457			XEvent xev;
458			XNextEvent (display, &xev);
459
460	root	1.5	#ifdef USE_XIM
461			if (!XFilterEvent (&xev, None))
462			{
463			if (xev.type == PropertyNotify
464			&& xev.xany.window == root
465	root	1.25	&& xev.xproperty.atom == xa[XA_XIM_SERVERS])
466	root	1.5	im_change_check ();
467			#endif
468			for (int i = xw.size (); i--; )
469			{
470			if (!xw[i])
471			xw.erase_unordered (i);
472			else if (xw[i]->window == xev.xany.window)
473			xw[i]->call (xev);
474			}
475	root	1.1	#ifdef USE_XIM
476	root	1.5	}
477	root	1.1	#endif
478			}
479	root	1.6	while (XEventsQueued (display, QueuedAlready));
480	root	1.1
481	root	1.10	XFlush (display);
482	root	1.1	}
483
484			void rxvt_display::flush ()
485			{
486	root	1.10	if (XEventsQueued (display, QueuedAlready))
487			x_cb (x_ev, EVENT_READ);
488
489	root	1.8	XFlush (display);
490	root	1.1	}
491
492			void rxvt_display::reg (xevent_watcher *w)
493			{
494			xw.push_back (w);
495			w->active = xw.size ();
496			}
497
498			void rxvt_display::unreg (xevent_watcher *w)
499			{
500			if (w->active)
501			xw[w->active - 1] = 0;
502			}
503
504			void rxvt_display::set_selection_owner (rxvt_term *owner)
505			{
506			if (selection_owner && selection_owner != owner)
507			selection_owner->selection_clear ();
508
509			selection_owner = owner;
510			}
511
512			#ifdef USE_XIM
513			void rxvt_display::reg (im_watcher *w)
514			{
515			imw.push_back (w);
516			}
517
518			void rxvt_display::unreg (im_watcher *w)
519			{
520			imw.erase (find (imw.begin (), imw.end (), w));
521			}
522
523			rxvt_xim rxvt_display::get_xim (const char locale, const char *modifiers)
524			{
525			char *id;
526			int l, m;
527
528			l = strlen (locale);
529			m = strlen (modifiers);
530
531			if (!(id = (char *)malloc (l + m + 2)))
532			return 0;
533
534			memcpy (id, locale, l); id[l] = '\n';
535			memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
536
537			rxvt_xim *xim = xims.get (id);
538
539			free (id);
540
541			return xim;
542			}
543
544			void rxvt_display::put_xim (rxvt_xim *xim)
545			{
546	root	1.10	#if XLIB_IS_RACEFREE
547	root	1.1	xims.put (xim);
548	root	1.10	#endif
549	root	1.1	}
550			#endif
551
552			Atom rxvt_display::atom (const char *name)
553			{
554			return XInternAtom (display, name, False);
555			}
556
557			/////////////////////////////////////////////////////////////////////////////
558
559			template class refcache<rxvt_display>;
560			refcache<rxvt_display> displays;
561
562			/////////////////////////////////////////////////////////////////////////////
563	root	1.38
564	root	1.1	bool
565	root	1.38	rxvt_color::alloc (rxvt_screen *screen, rxvt_rgba rgba)
566	root	1.1	{
567	root	1.28	#if XFT
568	root	1.31	XRenderPictFormat *format;
569	root	1.28
570	root	1.31	// FUCKING Xft gets it wrong, of course, so work around it
571			// transparency users should eat shit and die, and then
572			// XRenderQueryPictIndexValues themselves plenty.
573	root	1.37	if ((screen->visual->c_class == TrueColor \|\| screen->visual->c_class == DirectColor)
574	root	1.31	&& (format = XRenderFindVisualFormat (screen->xdisp, screen->visual)))
575			{
576			// the fun lies in doing everything manually...
577			c.color.red = rgba.r;
578			c.color.green = rgba.g;
579			c.color.blue = rgba.b;
580			c.color.alpha = rgba.a;
581
582	root	1.33	c.pixel = ((rgba.r * format->direct.redMask / rxvt_rgba::MAX_CC) << format->direct.red )
583	root	1.32	\| ((rgba.g * format->direct.greenMask / rxvt_rgba::MAX_CC) << format->direct.green)
584	root	1.33	\| ((rgba.b * format->direct.blueMask / rxvt_rgba::MAX_CC) << format->direct.blue )
585	root	1.32	\| ((rgba.a * format->direct.alphaMask / rxvt_rgba::MAX_CC) << format->direct.alpha);
586	root	1.29
587			return true;
588			}
589	root	1.31	else
590			{
591			XRenderColor d;
592
593			d.red = rgba.r;
594			d.green = rgba.g;
595			d.blue = rgba.b;
596			d.alpha = rgba.a;
597
598			return XftColorAllocValue (screen->xdisp, screen->visual, screen->cmap, &d, &c);
599			}
600	root	1.28	#else
601	root	1.37	if (screen->visual->c_class == TrueColor \|\| screen->visual->c_class == DirectColor)
602	root	1.35	{
603	root	1.37	p = (rgba.r * (screen->visual->red_mask >> ctz (screen->visual->red_mask ))
604			/ rxvt_rgba::MAX_CC) << ctz (screen->visual->red_mask )
605			\| (rgba.g * (screen->visual->green_mask >> ctz (screen->visual->green_mask))
606			/ rxvt_rgba::MAX_CC) << ctz (screen->visual->green_mask)
607			\| (rgba.b * (screen->visual->blue_mask >> ctz (screen->visual->blue_mask ))
608			/ rxvt_rgba::MAX_CC) << ctz (screen->visual->blue_mask );
609	root	1.1
610	root	1.35	return true;
611			}
612			else
613			{
614			XColor xc;
615	root	1.1
616	root	1.35	xc.red = rgba.r;
617			xc.green = rgba.g;
618			xc.blue = rgba.b;
619
620			if (XAllocColor (screen->xdisp, screen->cmap, &xc))
621			{
622			p = xc.pixel;
623			return true;
624			}
625	root	1.38	else
626			p = (rgba.r + rgba.g + rgba.b) > 128*3
627			? WhitePixelOfScreen (DefaultScreenOfDisplay (screen->xdisp))
628			: BlackPixelOfScreen (DefaultScreenOfDisplay (screen->xdisp));
629	root	1.28	}
630	root	1.38	#endif
631	root	1.1
632			return false;
633	root	1.38	}
634
635			bool
636			rxvt_color::set (rxvt_screen screen, const char name)
637			{
638			int l = strlen (name);
639			rxvt_rgba r;
640			char eos;
641			int mult;
642			XColor xc, xc_exact;
643
644			// parse a number of non-standard ARGB colour specifications
645			if ( l == 1+4*1 && 4 == sscanf (name, "#%1hx%1hx%1hx%1hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
646			mult = rxvt_rgba::MAX_CC / 0x0010;
647			else if (l == 1+4*2 && 4 == sscanf (name, "#%2hx%2hx%2hx%2hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
648			mult = rxvt_rgba::MAX_CC / 0x0100;
649			else if (l == 1+4*4 && 4 == sscanf (name, "#%4hx%4hx%4hx%4hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
650			mult = rxvt_rgba::MAX_CC / 0x0100;
651			else if (l == 4+5*4 && 4 == sscanf (name, "rgba:%hx/%hx/%hx/%hx%c", &r.r, &r.g, &r.b, &r.a, &eos))
652			mult = rxvt_rgba::MAX_CC / 0xffff;
653			else if (XParseColor (screen->xdisp, screen->cmap, name, &xc))
654			{
655			r.r = xc.red;
656			r.g = xc.green;
657			r.b = xc.blue;
658			mult = rxvt_rgba::MAX_CC / 0xffff;
659			}
660			else
661			{
662			rxvt_warn ("failed to allocate color '%s', using pink instead.\n", name);
663			r.r = 255;
664			r.g = 105;
665			r.b = 180;
666			mult = rxvt_rgba::MAX_CC / 0x00ff;
667			}
668
669			r.r = mult; r.g = mult; r.b = mult; r.a = mult;
670
671			return set (screen, r);
672			}
673
674			bool
675			rxvt_color::set (rxvt_screen *screen, rxvt_rgba rgba)
676			{
677			bool got = alloc (screen, rgba);
678
679			#if !ENABLE_MINIMAL
680			int cmap_size = screen->visual->map_entries;
681
682			if (!got
683			&& screen->visual->c_class == PseudoColor
684			&& cmap_size < 4096)
685			{
686			XColor *colors = new XColor [screen->visual->map_entries];
687
688			for (int i = 0; i < cmap_size; i++)
689			colors [i].pixel = i;
690
691			XQueryColors (screen->xdisp, screen->cmap, colors, cmap_size);
692
693			int diff = 0x7fffffffUL;
694			XColor *best = colors;
695
696			for (int i = 0; i < cmap_size; i++)
697			{
698			int d = (squared_diff<int> (rgba.r >> 2, colors [i].red >> 2))
699			+ (squared_diff<int> (rgba.g >> 2, colors [i].green >> 2))
700			+ (squared_diff<int> (rgba.b >> 2, colors [i].blue >> 2));
701
702			if (d < diff)
703			{
704			diff = d;
705			best = colors + i;
706			}
707			}
708
709			//rxvt_warn ("could not allocate %04x %04x %04x, getting %04x %04x %04x instead (%d)\n",
710			// rgba.r, rgba.g, rgba.b, best->red, best->green, best->blue, diff);
711
712			got = alloc (screen, rxvt_rgba (best->red, best->green, best->blue));
713
714			delete colors;
715			}
716	root	1.28	#endif
717	root	1.38
718			return got;
719	root	1.1	}
720
721			void
722	root	1.28	rxvt_color::get (rxvt_screen *screen, rxvt_rgba &rgba)
723	root	1.1	{
724			#if XFT
725	root	1.28	rgba.r = c.color.red;
726			rgba.g = c.color.green;
727			rgba.b = c.color.blue;
728			rgba.a = c.color.alpha;
729	root	1.1	#else
730			XColor c;
731
732			c.pixel = p;
733	root	1.26	XQueryColor (screen->xdisp, screen->cmap, &c);
734	root	1.1
735	root	1.28	rgba.r = c.red;
736			rgba.g = c.green;
737			rgba.b = c.blue;
738			rgba.a = rxvt_rgba::MAX_CC;
739	root	1.1	#endif
740			}
741
742			void
743	root	1.26	rxvt_color::free (rxvt_screen *screen)
744	root	1.1	{
745			#if XFT
746	root	1.26	XftColorFree (screen->xdisp, screen->visual, screen->cmap, &c);
747	root	1.1	#else
748	root	1.26	XFreeColors (screen->xdisp, screen->cmap, &p, 1, AllPlanes);
749	root	1.1	#endif
750			}
751
752			rxvt_color
753	root	1.26	rxvt_color::fade (rxvt_screen *screen, int percent)
754	root	1.1	{
755	root	1.28	rxvt_color faded;
756	root	1.18
757	root	1.28	rxvt_rgba c;
758			get (screen, c);
759	root	1.1
760	root	1.28	c.r = lerp (0, c.r, percent);
761			c.g = lerp (0, c.g, percent);
762			c.b = lerp (0, c.b, percent);
763	root	1.18
764	root	1.28	faded.set (screen, c);
765	root	1.18
766			return faded;
767			}
768
769			rxvt_color
770	root	1.26	rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &fadeto)
771	root	1.18	{
772	root	1.28	rxvt_rgba c, fc;
773	root	1.18	rxvt_color faded;
774
775	root	1.28	get (screen, c);
776			fadeto.get (screen, fc);
777	root	1.18
778			faded.set (
779	root	1.26	screen,
780	root	1.28	rxvt_rgba (
781			lerp (fc.r, c.r, percent),
782			lerp (fc.g, c.g, percent),
783			lerp (fc.b, c.b, percent),
784			lerp (fc.a, c.a, percent)
785			)
786	root	1.18	);
787	root	1.1
788			return faded;
789			}
790