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

const char *const xa_names[] =
  {
    "TEXT",
    "COMPOUND_TEXT",
    "UTF8_STRING",
    "MULTIPLE",
    "TARGETS",
    "TIMESTAMP",
    "VT_SELECTION",
    "INCR",
    "WM_PROTOCOLS",
    "WM_DELETE_WINDOW",
    "CLIPBOARD",
#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
  };

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

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);

  XVisualInfo vinfo;

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

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::set (rxvt_screen *screen, const char *name)
{
#if XFT
  int l = strlen (name);
  rxvt_rgba r;
  char eos;
  int mult;

  if (     l == 1+4*1 && 4 == sscanf (name, "#%1hx%1hx%1hx%1hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
    mult = 0x1111;
  else if (l == 1+4*2 && 4 == sscanf (name, "#%2hx%2hx%2hx%2hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
    mult = 0x0101;
  else if (l == 1+4*4 && 4 == sscanf (name, "#%4hx%4hx%4hx%4hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
    mult = 0x0001;
  else
    return XftColorAllocName (screen->xdisp, screen->visual, screen->cmap, name, &c);

  r.r *= mult; r.g *= mult; r.b *= mult; r.a *= mult;
  return set (screen, r);
#else
  XColor xc;

  if (XParseColor (screen->xdisp, screen->cmap, name, &xc))
    return set (screen, rxvt_rgba (xc.red, xc.green, xc.blue));

  return false;
#endif
}

bool
rxvt_color::set (rxvt_screen *screen, rxvt_rgba rgba)
{
#if XFT
  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
  XColor xc;

  xc.red   = rgba.r;
  xc.green = rgba.g;
  xc.blue  = rgba.b;
  xc.flags = DoRed | DoGreen | DoBlue;

  if (XAllocColor (screen->xdisp, screen->cmap, &xc))
    {
      p = xc.pixel;
      return true;
    }

  return false;
#endif
}

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:	1.28
Committed:	Sun Jan 29 20:51:28 2006 UTC (18 years, 4 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.27:	+66 -69 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	1.25	const char *const xa_names[] =
38			{
39			"TEXT",
40			"COMPOUND_TEXT",
41			"UTF8_STRING",
42			"MULTIPLE",
43			"TARGETS",
44			"TIMESTAMP",
45			"VT_SELECTION",
46			"INCR",
47			"WM_PROTOCOLS",
48			"WM_DELETE_WINDOW",
49			"CLIPBOARD",
50			#if ENABLE_FRILLS
51			"_MOTIF_WM_HINTS",
52			#endif
53			#if ENABLE_EWMH
54			"_NET_WM_PID",
55			"_NET_WM_NAME",
56			"_NET_WM_ICON_NAME",
57			"_NET_WM_PING",
58			#endif
59			#if USE_XIM
60			"WM_LOCALE_NAME",
61			"XIM_SERVERS",
62			#endif
63			#ifdef TRANSPARENT
64			"_XROOTPMAP_ID",
65			"ESETROOT_PMAP_ID",
66			#endif
67			#if ENABLE_XEMBED
68			"_XEMBED",
69			"_XEMBED_INFO",
70			#endif
71			};
72
73			/////////////////////////////////////////////////////////////////////////////
74
75	root	1.1	refcounted::refcounted (const char *id)
76			{
77	root	1.2	this->id = strdup (id);
78	root	1.1	}
79
80			refcounted::~refcounted ()
81			{
82			free (id);
83			}
84
85			template<class T>
86			T refcache<T>::get (const char id)
87			{
88			for (T **i = this->begin (); i < this->end (); ++i)
89			{
90			if (!strcmp (id, (*i)->id))
91			{
92	root	1.23	++(*i)->referenced;
93			(*i)->ref_next ();
94	root	1.1	return *i;
95			}
96			}
97
98			T *obj = new T (id);
99
100	root	1.23	if (obj && obj->ref_init ())
101	root	1.1	{
102	root	1.23	obj->referenced = 1;
103	root	1.1	this->push_back (obj);
104			return obj;
105			}
106			else
107			{
108			delete obj;
109			return 0;
110			}
111			}
112
113			template<class T>
114			void refcache<T>::put (T *obj)
115			{
116			if (!obj)
117			return;
118
119			if (!--obj->referenced)
120			{
121			this->erase (find (this->begin (), this->end (), obj));
122			delete obj;
123			}
124			}
125
126			template<class T>
127	root	1.12	void refcache<T>::clear ()
128	root	1.1	{
129			while (this->size ())
130			put (*this->begin ());
131			}
132
133			/////////////////////////////////////////////////////////////////////////////
134
135			#ifdef USE_XIM
136	root	1.24
137	root	1.1	static void
138			#if XIMCB_PROTO_BROKEN
139			im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3)
140			#else
141			im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
142			#endif
143			{
144			rxvt_xim xim = (rxvt_xim )client_data;
145			rxvt_display *display = xim->display;
146
147	root	1.5	xim->xim = 0;
148
149	root	1.1	display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
150			display->im_change_cb ();
151			}
152
153	root	1.23	bool
154			rxvt_xim::ref_init ()
155	root	1.1	{
156			display = GET_R->display; //HACK: TODO
157
158			xim = XOpenIM (display->display, NULL, NULL, NULL);
159
160			if (!xim)
161			return false;
162
163			XIMCallback ximcallback;
164			ximcallback.client_data = (XPointer)this;
165			ximcallback.callback = im_destroy_cb;
166
167			XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
168
169			return true;
170			}
171
172			rxvt_xim::~rxvt_xim ()
173			{
174			if (xim)
175			XCloseIM (xim);
176			}
177	root	1.24
178	root	1.1	#endif
179
180			/////////////////////////////////////////////////////////////////////////////
181
182	root	1.26	void
183			rxvt_screen::set (rxvt_display *disp)
184			{
185			display = disp;
186	root	1.27	xdisp = disp->display;
187	root	1.26
188			Screen *screen = ScreenOfDisplay (xdisp, disp->screen);
189
190	root	1.27	depth = DefaultDepthOfScreen (screen);
191			visual = DefaultVisualOfScreen (screen);
192			cmap = DefaultColormapOfScreen (screen);
193	root	1.26	}
194
195			void
196	root	1.28	rxvt_screen::set (rxvt_display *disp, int bitdepth)
197	root	1.26	{
198			set (disp);
199
200			XVisualInfo vinfo;
201
202	root	1.28	if (XMatchVisualInfo (xdisp, display->screen, bitdepth, TrueColor, &vinfo))
203	root	1.26	{
204	root	1.28	depth = bitdepth;
205			visual = vinfo.visual;
206			cmap = XCreateColormap (xdisp, disp->root, visual, AllocNone);
207	root	1.26	}
208			}
209
210			void
211			rxvt_screen::clear ()
212			{
213			if (cmap != DefaultColormapOfScreen (ScreenOfDisplay (xdisp, display->screen)))
214			XFreeColormap (xdisp, cmap);
215			}
216
217			/////////////////////////////////////////////////////////////////////////////
218
219	root	1.1	rxvt_display::rxvt_display (const char *id)
220			: refcounted (id)
221			, x_ev (this, &rxvt_display::x_cb)
222			, selection_owner (0)
223			{
224			}
225
226	root	1.23	XrmDatabase
227			rxvt_display::get_resources ()
228			{
229			char homedir = (char )getenv ("HOME");
230			char fname[1024];
231
232			/*
233			* get resources using the X library function
234			*/
235			char displayResource, xe;
236			XrmDatabase database, rdb1;
237
238			database = NULL;
239
240			// for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20
241
242			// 6. System wide per application default file.
243
244			/* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */
245			if ((xe = (char *)getenv ("XAPPLRESDIR")))
246			{
247			snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS);
248
249			if ((rdb1 = XrmGetFileDatabase (fname)))
250			XrmMergeDatabases (rdb1, &database);
251			}
252
253			// 5. User's per application default file.
254			// none
255
256			// 4. User's defaults file.
257			/* Get any Xserver defaults */
258			displayResource = XResourceManagerString (display);
259
260			if (displayResource != NULL)
261			{
262			if ((rdb1 = XrmGetStringDatabase (displayResource)))
263			XrmMergeDatabases (rdb1, &database);
264			}
265			else if (homedir)
266			{
267			snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir);
268
269			if ((rdb1 = XrmGetFileDatabase (fname)))
270			XrmMergeDatabases (rdb1, &database);
271			}
272
273			/* Get screen specific resources */
274			displayResource = XScreenResourceString (ScreenOfDisplay (display, screen));
275
276			if (displayResource != NULL)
277			{
278			if ((rdb1 = XrmGetStringDatabase (displayResource)))
279			/* Merge with screen-independent resources */
280			XrmMergeDatabases (rdb1, &database);
281
282			XFree (displayResource);
283			}
284
285			// 3. User's per host defaults file
286			/* Add in XENVIRONMENT file */
287			if ((xe = (char *)getenv ("XENVIRONMENT"))
288			&& (rdb1 = XrmGetFileDatabase (xe)))
289			XrmMergeDatabases (rdb1, &database);
290			else if (homedir)
291			{
292			struct utsname un;
293
294			if (!uname (&un))
295			{
296			snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename);
297
298			if ((rdb1 = XrmGetFileDatabase (fname)))
299			XrmMergeDatabases (rdb1, &database);
300			}
301			}
302
303			return database;
304			}
305
306			bool rxvt_display::ref_init ()
307	root	1.1	{
308	root	1.14	#ifdef LOCAL_X_IS_UNIX
309			if (id[0] == ':')
310			{
311			val = rxvt_malloc (5 + strlen (id) + 1);
312			strcpy (val, "unix/");
313			strcat (val, id);
314			display = XOpenDisplay (val);
315			free (val);
316			}
317			else
318	root	1.15	#endif
319	root	1.14	display = 0;
320
321			if (!display)
322			display = XOpenDisplay (id);
323	root	1.1
324			if (!display)
325			return false;
326
327			screen = DefaultScreen (display);
328			root = DefaultRootWindow (display);
329
330	root	1.25	assert (sizeof (xa_names) / sizeof (char *) == NUM_XA);
331			XInternAtoms (display, (char **)xa_names, NUM_XA, False, xa);
332
333	root	1.23	XrmSetDatabase (display, get_resources ());
334	root	1.1
335	root	1.12	#ifdef POINTER_BLANK
336			XColor blackcolour;
337			blackcolour.red = 0;
338			blackcolour.green = 0;
339			blackcolour.blue = 0;
340			Font f = XLoadFont (display, "fixed");
341			blank_cursor = XCreateGlyphCursor (display, f, f, ' ', ' ',
342			&blackcolour, &blackcolour);
343			XUnloadFont (display, f);
344			#endif
345
346	root	1.23	int fd = XConnectionNumber (display);
347
348			#ifndef NO_SLOW_LINK_SUPPORT
349			// try to detect wether we have a local connection.
350			// assume unix domains socket == local, everything else not
351			// TODO: might want to check for inet/127.0.0.1
352			is_local = 0;
353			sockaddr_un sa;
354			socklen_t sl = sizeof (sa);
355
356			if (!getsockname (fd, (sockaddr *)&sa, &sl))
357			is_local = sa.sun_family == AF_LOCAL;
358			#endif
359
360	root	1.1	x_ev.start (fd, EVENT_READ);
361			fcntl (fd, F_SETFD, FD_CLOEXEC);
362
363			XSelectInput (display, root, PropertyChangeMask);
364
365			flush ();
366
367			return true;
368			}
369
370	root	1.23	void
371			rxvt_display::ref_next ()
372			{
373			// TODO: somehow check wether the database files/resources changed
374			// before re-loading/parsing
375			XrmDestroyDatabase (XrmGetDatabase (display));
376			XrmSetDatabase (display, get_resources ());
377			}
378
379	root	1.1	rxvt_display::~rxvt_display ()
380			{
381	root	1.22	if (!display)
382			return;
383
384	root	1.21	#ifdef POINTER_BLANK
385			XFreeCursor (display, blank_cursor);
386			#endif
387	root	1.1	x_ev.stop ();
388	root	1.12	#ifdef USE_XIM
389			xims.clear ();
390			#endif
391	root	1.22	XCloseDisplay (display);
392	root	1.1	}
393
394			#ifdef USE_XIM
395			void rxvt_display::im_change_cb ()
396			{
397			for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
398			(*i)->call ();
399			}
400	root	1.5
401			void rxvt_display::im_change_check ()
402			{
403	root	1.13	// try to only call im_change_cb when a new input method
404	root	1.5	// registers, as xlib crashes due to a race otherwise.
405			Atom actual_type, *atoms;
406			int actual_format;
407			unsigned long nitems, bytes_after;
408
409	root	1.25	if (XGetWindowProperty (display, root, xa[XA_XIM_SERVERS], 0L, 1000000L,
410	root	1.5	False, XA_ATOM, &actual_type, &actual_format,
411			&nitems, &bytes_after, (unsigned char **)&atoms)
412			!= Success )
413			return;
414
415			if (actual_type == XA_ATOM && actual_format == 32)
416			for (int i = 0; i < nitems; i++)
417			if (XGetSelectionOwner (display, atoms[i]))
418			{
419			im_change_cb ();
420			break;
421			}
422
423			XFree (atoms);
424			}
425	root	1.1	#endif
426
427			void rxvt_display::x_cb (io_watcher &w, short revents)
428			{
429			do
430			{
431			XEvent xev;
432			XNextEvent (display, &xev);
433
434	root	1.5	#ifdef USE_XIM
435			if (!XFilterEvent (&xev, None))
436			{
437			if (xev.type == PropertyNotify
438			&& xev.xany.window == root
439	root	1.25	&& xev.xproperty.atom == xa[XA_XIM_SERVERS])
440	root	1.5	im_change_check ();
441			#endif
442			for (int i = xw.size (); i--; )
443			{
444			if (!xw[i])
445			xw.erase_unordered (i);
446			else if (xw[i]->window == xev.xany.window)
447			xw[i]->call (xev);
448			}
449	root	1.1	#ifdef USE_XIM
450	root	1.5	}
451	root	1.1	#endif
452			}
453	root	1.6	while (XEventsQueued (display, QueuedAlready));
454	root	1.1
455	root	1.10	XFlush (display);
456	root	1.1	}
457
458			void rxvt_display::flush ()
459			{
460	root	1.10	if (XEventsQueued (display, QueuedAlready))
461			x_cb (x_ev, EVENT_READ);
462
463	root	1.8	XFlush (display);
464	root	1.1	}
465
466			void rxvt_display::reg (xevent_watcher *w)
467			{
468			xw.push_back (w);
469			w->active = xw.size ();
470			}
471
472			void rxvt_display::unreg (xevent_watcher *w)
473			{
474			if (w->active)
475			xw[w->active - 1] = 0;
476			}
477
478			void rxvt_display::set_selection_owner (rxvt_term *owner)
479			{
480			if (selection_owner && selection_owner != owner)
481			selection_owner->selection_clear ();
482
483			selection_owner = owner;
484			}
485
486			#ifdef USE_XIM
487			void rxvt_display::reg (im_watcher *w)
488			{
489			imw.push_back (w);
490			}
491
492			void rxvt_display::unreg (im_watcher *w)
493			{
494			imw.erase (find (imw.begin (), imw.end (), w));
495			}
496
497			rxvt_xim rxvt_display::get_xim (const char locale, const char *modifiers)
498			{
499			char *id;
500			int l, m;
501
502			l = strlen (locale);
503			m = strlen (modifiers);
504
505			if (!(id = (char *)malloc (l + m + 2)))
506			return 0;
507
508			memcpy (id, locale, l); id[l] = '\n';
509			memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
510
511			rxvt_xim *xim = xims.get (id);
512
513			free (id);
514
515			return xim;
516			}
517
518			void rxvt_display::put_xim (rxvt_xim *xim)
519			{
520	root	1.10	#if XLIB_IS_RACEFREE
521	root	1.1	xims.put (xim);
522	root	1.10	#endif
523	root	1.1	}
524			#endif
525
526			Atom rxvt_display::atom (const char *name)
527			{
528			return XInternAtom (display, name, False);
529			}
530
531			/////////////////////////////////////////////////////////////////////////////
532
533			template class refcache<rxvt_display>;
534			refcache<rxvt_display> displays;
535
536			/////////////////////////////////////////////////////////////////////////////
537
538			bool
539	root	1.28	rxvt_color::set (rxvt_screen screen, const char name)
540	root	1.1	{
541			#if XFT
542	root	1.28	int l = strlen (name);
543			rxvt_rgba r;
544			char eos;
545			int mult;
546
547			if ( l == 1+4*1 && 4 == sscanf (name, "#%1hx%1hx%1hx%1hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
548			mult = 0x1111;
549			else if (l == 1+4*2 && 4 == sscanf (name, "#%2hx%2hx%2hx%2hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
550			mult = 0x0101;
551			else if (l == 1+4*4 && 4 == sscanf (name, "#%4hx%4hx%4hx%4hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
552			mult = 0x0001;
553			else
554			return XftColorAllocName (screen->xdisp, screen->visual, screen->cmap, name, &c);
555	root	1.1
556	root	1.28	r.r = mult; r.g = mult; r.b = mult; r.a = mult;
557			return set (screen, r);
558	root	1.7	#else
559	root	1.1	XColor xc;
560
561	root	1.26	if (XParseColor (screen->xdisp, screen->cmap, name, &xc))
562	root	1.28	return set (screen, rxvt_rgba (xc.red, xc.green, xc.blue));
563	root	1.1
564			return false;
565	root	1.7	#endif
566	root	1.1	}
567
568			bool
569	root	1.28	rxvt_color::set (rxvt_screen *screen, rxvt_rgba rgba)
570	root	1.1	{
571	root	1.28	#if XFT
572			XRenderColor d;
573
574			d.red = rgba.r;
575			d.green = rgba.g;
576			d.blue = rgba.b;
577			d.alpha = rgba.a;
578
579			return XftColorAllocValue (screen->xdisp, screen->visual, screen->cmap, &d, &c);
580			#else
581	root	1.1	XColor xc;
582
583	root	1.28	xc.red = rgba.r;
584			xc.green = rgba.g;
585			xc.blue = rgba.b;
586	root	1.1	xc.flags = DoRed \| DoGreen \| DoBlue;
587
588	root	1.26	if (XAllocColor (screen->xdisp, screen->cmap, &xc))
589	root	1.28	{
590			p = xc.pixel;
591			return true;
592			}
593	root	1.1
594			return false;
595	root	1.28	#endif
596	root	1.1	}
597
598			void
599	root	1.28	rxvt_color::get (rxvt_screen *screen, rxvt_rgba &rgba)
600	root	1.1	{
601			#if XFT
602	root	1.28	rgba.r = c.color.red;
603			rgba.g = c.color.green;
604			rgba.b = c.color.blue;
605			rgba.a = c.color.alpha;
606	root	1.1	#else
607			XColor c;
608
609			c.pixel = p;
610	root	1.26	XQueryColor (screen->xdisp, screen->cmap, &c);
611	root	1.1
612	root	1.28	rgba.r = c.red;
613			rgba.g = c.green;
614			rgba.b = c.blue;
615			rgba.a = rxvt_rgba::MAX_CC;
616	root	1.1	#endif
617			}
618
619			void
620	root	1.26	rxvt_color::free (rxvt_screen *screen)
621	root	1.1	{
622			#if XFT
623	root	1.26	XftColorFree (screen->xdisp, screen->visual, screen->cmap, &c);
624	root	1.1	#else
625	root	1.26	XFreeColors (screen->xdisp, screen->cmap, &p, 1, AllPlanes);
626	root	1.1	#endif
627			}
628
629			rxvt_color
630	root	1.26	rxvt_color::fade (rxvt_screen *screen, int percent)
631	root	1.1	{
632	root	1.28	rxvt_color faded;
633	root	1.18
634	root	1.28	rxvt_rgba c;
635			get (screen, c);
636	root	1.1
637	root	1.28	c.r = lerp (0, c.r, percent);
638			c.g = lerp (0, c.g, percent);
639			c.b = lerp (0, c.b, percent);
640	root	1.18
641	root	1.28	faded.set (screen, c);
642	root	1.18
643			return faded;
644			}
645
646			rxvt_color
647	root	1.26	rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &fadeto)
648	root	1.18	{
649	root	1.28	rxvt_rgba c, fc;
650	root	1.18	rxvt_color faded;
651
652	root	1.28	get (screen, c);
653			fadeto.get (screen, fc);
654	root	1.18
655			faded.set (
656	root	1.26	screen,
657	root	1.28	rxvt_rgba (
658			lerp (fc.r, c.r, percent),
659			lerp (fc.g, c.g, percent),
660			lerp (fc.b, c.b, percent),
661			lerp (fc.a, c.a, percent)
662			)
663	root	1.18	);
664	root	1.1
665			return faded;
666			}
667