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 depth)
{
  set (disp);

  XVisualInfo vinfo;

  if (XMatchVisualInfo (xdisp, display->screen, depth, TrueColor, &vinfo))
    {
      this->depth  = depth;
      this->visual = vinfo.visual;
      this->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, Pixel p)
{
#if XFT
  XColor xc;

  xc.pixel = p;
  if (!XQueryColor (screen->xdisp, screen->cmap, &xc))
    return false;

  XRenderColor d;

  d.red   = xc.red;
  d.green = xc.green;
  d.blue  = xc.blue;
  d.alpha = 0xffff;

  return
    XftColorAllocValue (screen->xdisp, 
                        screen->visual,
                        screen->cmap,
                        &d, &c);
#else
  this->p = p;
#endif

  return true;
}

bool
rxvt_color::set (rxvt_screen *screen, const char *name)
{
#if XFT
  return XftColorAllocName (screen->xdisp, screen->visual, screen->cmap, name, &c);
#else
  XColor xc;

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

  return false;
#endif
}

bool
rxvt_color::set (rxvt_screen *screen, unsigned short cr, unsigned short cg, unsigned short cb)
{
  XColor xc;

  xc.red   = cr;
  xc.green = cg;
  xc.blue  = cb;
  xc.flags = DoRed | DoGreen | DoBlue;

  if (XAllocColor (screen->xdisp, screen->cmap, &xc))
    return set (screen, xc.pixel);

  return false;
}

void 
rxvt_color::get (rxvt_screen *screen, unsigned short &cr, unsigned short &cg, unsigned short &cb)
{
#if XFT
  cr = c.color.red;
  cg = c.color.green;
  cb = c.color.blue;
#else
  XColor c;

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

  cr = c.red;
  cg = c.green;
  cb = c.blue;
#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)
{
  percent = 100 - percent;

  unsigned short cr, cg, cb;
  rxvt_color faded;

  get (screen, cr, cg, cb);

  faded.set (
    screen,
    cr * percent / 100,
    cg * percent / 100,
    cb * percent / 100
  );

  return faded;
}

#define LERP(a,b,p) (a * p + b * (100 - p)) / 100

rxvt_color
rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &fadeto)
{
  percent = 100 - percent;

  unsigned short cr, cg, cb;
  unsigned short fcr, fcg, fcb;
  rxvt_color faded;
  
  get (screen, cr, cg, cb);
  fadeto.get (screen, fcr, fcg, fcb);

  faded.set (
    screen,
    LERP (cr, fcr, percent),
    LERP (cg, fcg, percent),
    LERP (cb, fcb, percent)
  );

  return faded;
}

Revision:	1.26
Committed:	Wed Jan 25 21:03:04 2006 UTC (18 years, 4 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.25:	+62 -47 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
187			xdisp = disp->display;
188
189			Screen *screen = ScreenOfDisplay (xdisp, disp->screen);
190
191			depth = DefaultDepthOfScreen (screen);
192			visual = DefaultVisualOfScreen (screen);
193			cmap = DefaultColormapOfScreen (screen);
194			}
195
196			void
197			rxvt_screen::set (rxvt_display *disp, int depth)
198			{
199			set (disp);
200
201			XVisualInfo vinfo;
202
203			if (XMatchVisualInfo (xdisp, display->screen, depth, TrueColor, &vinfo))
204			{
205			this->depth = depth;
206			this->visual = vinfo.visual;
207			this->cmap = XCreateColormap (xdisp, disp->root, visual, AllocNone);
208			}
209			}
210
211			void
212			rxvt_screen::clear ()
213			{
214			if (cmap != DefaultColormapOfScreen (ScreenOfDisplay (xdisp, display->screen)))
215			XFreeColormap (xdisp, cmap);
216			}
217
218			/////////////////////////////////////////////////////////////////////////////
219
220	root	1.1	rxvt_display::rxvt_display (const char *id)
221			: refcounted (id)
222			, x_ev (this, &rxvt_display::x_cb)
223			, selection_owner (0)
224			{
225			}
226
227	root	1.23	XrmDatabase
228			rxvt_display::get_resources ()
229			{
230			char homedir = (char )getenv ("HOME");
231			char fname[1024];
232
233			/*
234			* get resources using the X library function
235			*/
236			char displayResource, xe;
237			XrmDatabase database, rdb1;
238
239			database = NULL;
240
241			// for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20
242
243			// 6. System wide per application default file.
244
245			/* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */
246			if ((xe = (char *)getenv ("XAPPLRESDIR")))
247			{
248			snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS);
249
250			if ((rdb1 = XrmGetFileDatabase (fname)))
251			XrmMergeDatabases (rdb1, &database);
252			}
253
254			// 5. User's per application default file.
255			// none
256
257			// 4. User's defaults file.
258			/* Get any Xserver defaults */
259			displayResource = XResourceManagerString (display);
260
261			if (displayResource != NULL)
262			{
263			if ((rdb1 = XrmGetStringDatabase (displayResource)))
264			XrmMergeDatabases (rdb1, &database);
265			}
266			else if (homedir)
267			{
268			snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir);
269
270			if ((rdb1 = XrmGetFileDatabase (fname)))
271			XrmMergeDatabases (rdb1, &database);
272			}
273
274			/* Get screen specific resources */
275			displayResource = XScreenResourceString (ScreenOfDisplay (display, screen));
276
277			if (displayResource != NULL)
278			{
279			if ((rdb1 = XrmGetStringDatabase (displayResource)))
280			/* Merge with screen-independent resources */
281			XrmMergeDatabases (rdb1, &database);
282
283			XFree (displayResource);
284			}
285
286			// 3. User's per host defaults file
287			/* Add in XENVIRONMENT file */
288			if ((xe = (char *)getenv ("XENVIRONMENT"))
289			&& (rdb1 = XrmGetFileDatabase (xe)))
290			XrmMergeDatabases (rdb1, &database);
291			else if (homedir)
292			{
293			struct utsname un;
294
295			if (!uname (&un))
296			{
297			snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename);
298
299			if ((rdb1 = XrmGetFileDatabase (fname)))
300			XrmMergeDatabases (rdb1, &database);
301			}
302			}
303
304			return database;
305			}
306
307			bool rxvt_display::ref_init ()
308	root	1.1	{
309	root	1.14	#ifdef LOCAL_X_IS_UNIX
310			if (id[0] == ':')
311			{
312			val = rxvt_malloc (5 + strlen (id) + 1);
313			strcpy (val, "unix/");
314			strcat (val, id);
315			display = XOpenDisplay (val);
316			free (val);
317			}
318			else
319	root	1.15	#endif
320	root	1.14	display = 0;
321
322			if (!display)
323			display = XOpenDisplay (id);
324	root	1.1
325			if (!display)
326			return false;
327
328			screen = DefaultScreen (display);
329			root = DefaultRootWindow (display);
330
331	root	1.25	assert (sizeof (xa_names) / sizeof (char *) == NUM_XA);
332			XInternAtoms (display, (char **)xa_names, NUM_XA, False, xa);
333
334	root	1.23	XrmSetDatabase (display, get_resources ());
335	root	1.1
336	root	1.12	#ifdef POINTER_BLANK
337			XColor blackcolour;
338			blackcolour.red = 0;
339			blackcolour.green = 0;
340			blackcolour.blue = 0;
341			Font f = XLoadFont (display, "fixed");
342			blank_cursor = XCreateGlyphCursor (display, f, f, ' ', ' ',
343			&blackcolour, &blackcolour);
344			XUnloadFont (display, f);
345			#endif
346
347	root	1.23	int fd = XConnectionNumber (display);
348
349			#ifndef NO_SLOW_LINK_SUPPORT
350			// try to detect wether we have a local connection.
351			// assume unix domains socket == local, everything else not
352			// TODO: might want to check for inet/127.0.0.1
353			is_local = 0;
354			sockaddr_un sa;
355			socklen_t sl = sizeof (sa);
356
357			if (!getsockname (fd, (sockaddr *)&sa, &sl))
358			is_local = sa.sun_family == AF_LOCAL;
359			#endif
360
361	root	1.1	x_ev.start (fd, EVENT_READ);
362			fcntl (fd, F_SETFD, FD_CLOEXEC);
363
364			XSelectInput (display, root, PropertyChangeMask);
365
366			flush ();
367
368			return true;
369			}
370
371	root	1.23	void
372			rxvt_display::ref_next ()
373			{
374			// TODO: somehow check wether the database files/resources changed
375			// before re-loading/parsing
376			XrmDestroyDatabase (XrmGetDatabase (display));
377			XrmSetDatabase (display, get_resources ());
378			}
379
380	root	1.1	rxvt_display::~rxvt_display ()
381			{
382	root	1.22	if (!display)
383			return;
384
385	root	1.21	#ifdef POINTER_BLANK
386			XFreeCursor (display, blank_cursor);
387			#endif
388	root	1.1	x_ev.stop ();
389	root	1.12	#ifdef USE_XIM
390			xims.clear ();
391			#endif
392	root	1.22	XCloseDisplay (display);
393	root	1.1	}
394
395			#ifdef USE_XIM
396			void rxvt_display::im_change_cb ()
397			{
398			for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
399			(*i)->call ();
400			}
401	root	1.5
402			void rxvt_display::im_change_check ()
403			{
404	root	1.13	// try to only call im_change_cb when a new input method
405	root	1.5	// registers, as xlib crashes due to a race otherwise.
406			Atom actual_type, *atoms;
407			int actual_format;
408			unsigned long nitems, bytes_after;
409
410	root	1.25	if (XGetWindowProperty (display, root, xa[XA_XIM_SERVERS], 0L, 1000000L,
411	root	1.5	False, XA_ATOM, &actual_type, &actual_format,
412			&nitems, &bytes_after, (unsigned char **)&atoms)
413			!= Success )
414			return;
415
416			if (actual_type == XA_ATOM && actual_format == 32)
417			for (int i = 0; i < nitems; i++)
418			if (XGetSelectionOwner (display, atoms[i]))
419			{
420			im_change_cb ();
421			break;
422			}
423
424			XFree (atoms);
425			}
426	root	1.1	#endif
427
428			void rxvt_display::x_cb (io_watcher &w, short revents)
429			{
430			do
431			{
432			XEvent xev;
433			XNextEvent (display, &xev);
434
435	root	1.5	#ifdef USE_XIM
436			if (!XFilterEvent (&xev, None))
437			{
438			if (xev.type == PropertyNotify
439			&& xev.xany.window == root
440	root	1.25	&& xev.xproperty.atom == xa[XA_XIM_SERVERS])
441	root	1.5	im_change_check ();
442			#endif
443			for (int i = xw.size (); i--; )
444			{
445			if (!xw[i])
446			xw.erase_unordered (i);
447			else if (xw[i]->window == xev.xany.window)
448			xw[i]->call (xev);
449			}
450	root	1.1	#ifdef USE_XIM
451	root	1.5	}
452	root	1.1	#endif
453			}
454	root	1.6	while (XEventsQueued (display, QueuedAlready));
455	root	1.1
456	root	1.10	XFlush (display);
457	root	1.1	}
458
459			void rxvt_display::flush ()
460			{
461	root	1.10	if (XEventsQueued (display, QueuedAlready))
462			x_cb (x_ev, EVENT_READ);
463
464	root	1.8	XFlush (display);
465	root	1.1	}
466
467			void rxvt_display::reg (xevent_watcher *w)
468			{
469			xw.push_back (w);
470			w->active = xw.size ();
471			}
472
473			void rxvt_display::unreg (xevent_watcher *w)
474			{
475			if (w->active)
476			xw[w->active - 1] = 0;
477			}
478
479			void rxvt_display::set_selection_owner (rxvt_term *owner)
480			{
481			if (selection_owner && selection_owner != owner)
482			selection_owner->selection_clear ();
483
484			selection_owner = owner;
485			}
486
487			#ifdef USE_XIM
488			void rxvt_display::reg (im_watcher *w)
489			{
490			imw.push_back (w);
491			}
492
493			void rxvt_display::unreg (im_watcher *w)
494			{
495			imw.erase (find (imw.begin (), imw.end (), w));
496			}
497
498			rxvt_xim rxvt_display::get_xim (const char locale, const char *modifiers)
499			{
500			char *id;
501			int l, m;
502
503			l = strlen (locale);
504			m = strlen (modifiers);
505
506			if (!(id = (char *)malloc (l + m + 2)))
507			return 0;
508
509			memcpy (id, locale, l); id[l] = '\n';
510			memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
511
512			rxvt_xim *xim = xims.get (id);
513
514			free (id);
515
516			return xim;
517			}
518
519			void rxvt_display::put_xim (rxvt_xim *xim)
520			{
521	root	1.10	#if XLIB_IS_RACEFREE
522	root	1.1	xims.put (xim);
523	root	1.10	#endif
524	root	1.1	}
525			#endif
526
527			Atom rxvt_display::atom (const char *name)
528			{
529			return XInternAtom (display, name, False);
530			}
531
532			/////////////////////////////////////////////////////////////////////////////
533
534			template class refcache<rxvt_display>;
535			refcache<rxvt_display> displays;
536
537			/////////////////////////////////////////////////////////////////////////////
538
539			bool
540	root	1.26	rxvt_color::set (rxvt_screen *screen, Pixel p)
541	root	1.1	{
542			#if XFT
543			XColor xc;
544
545			xc.pixel = p;
546	root	1.26	if (!XQueryColor (screen->xdisp, screen->cmap, &xc))
547	root	1.1	return false;
548
549			XRenderColor d;
550
551			d.red = xc.red;
552			d.green = xc.green;
553			d.blue = xc.blue;
554			d.alpha = 0xffff;
555
556			return
557	root	1.26	XftColorAllocValue (screen->xdisp,
558			screen->visual,
559			screen->cmap,
560	root	1.1	&d, &c);
561			#else
562			this->p = p;
563			#endif
564
565			return true;
566			}
567
568			bool
569	root	1.26	rxvt_color::set (rxvt_screen screen, const char name)
570	root	1.1	{
571	root	1.7	#if XFT
572	root	1.26	return XftColorAllocName (screen->xdisp, screen->visual, screen->cmap, name, &c);
573	root	1.7	#else
574	root	1.1	XColor xc;
575
576	root	1.26	if (XParseColor (screen->xdisp, screen->cmap, name, &xc))
577			return set (screen, xc.red, xc.green, xc.blue);
578	root	1.1
579			return false;
580	root	1.7	#endif
581	root	1.1	}
582
583			bool
584	root	1.26	rxvt_color::set (rxvt_screen *screen, unsigned short cr, unsigned short cg, unsigned short cb)
585	root	1.1	{
586			XColor xc;
587
588			xc.red = cr;
589			xc.green = cg;
590			xc.blue = cb;
591			xc.flags = DoRed \| DoGreen \| DoBlue;
592
593	root	1.26	if (XAllocColor (screen->xdisp, screen->cmap, &xc))
594			return set (screen, xc.pixel);
595	root	1.1
596			return false;
597			}
598
599			void
600	root	1.26	rxvt_color::get (rxvt_screen *screen, unsigned short &cr, unsigned short &cg, unsigned short &cb)
601	root	1.1	{
602			#if XFT
603			cr = c.color.red;
604			cg = c.color.green;
605			cb = c.color.blue;
606			#else
607			XColor c;
608
609			c.pixel = p;
610	root	1.26	XQueryColor (screen->xdisp, screen->cmap, &c);
611	root	1.1
612			cr = c.red;
613			cg = c.green;
614			cb = c.blue;
615			#endif
616			}
617
618			void
619	root	1.26	rxvt_color::free (rxvt_screen *screen)
620	root	1.1	{
621			#if XFT
622	root	1.26	XftColorFree (screen->xdisp, screen->visual, screen->cmap, &c);
623	root	1.1	#else
624	root	1.26	XFreeColors (screen->xdisp, screen->cmap, &p, 1, AllPlanes);
625	root	1.1	#endif
626			}
627
628			rxvt_color
629	root	1.26	rxvt_color::fade (rxvt_screen *screen, int percent)
630	root	1.1	{
631	root	1.18	percent = 100 - percent;
632
633	root	1.1	unsigned short cr, cg, cb;
634			rxvt_color faded;
635
636	root	1.26	get (screen, cr, cg, cb);
637	root	1.18
638			faded.set (
639	root	1.26	screen,
640	root	1.18	cr * percent / 100,
641			cg * percent / 100,
642			cb * percent / 100
643			);
644
645			return faded;
646			}
647
648	root	1.19	#define LERP(a,b,p) (a * p + b * (100 - p)) / 100
649	root	1.18
650			rxvt_color
651	root	1.26	rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &fadeto)
652	root	1.18	{
653			percent = 100 - percent;
654
655			unsigned short cr, cg, cb;
656			unsigned short fcr, fcg, fcb;
657			rxvt_color faded;
658
659	root	1.26	get (screen, cr, cg, cb);
660			fadeto.get (screen, fcr, fcg, fcb);
661	root	1.18
662			faded.set (
663	root	1.26	screen,
664	root	1.18	LERP (cr, fcr, percent),
665			LERP (cg, fcg, percent),
666			LERP (cb, fcb, percent)
667			);
668	root	1.1
669			return faded;
670			}
671