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",
#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);

#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::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 = rxvt_rgba::MAX_CC / 0x000f;
  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 / 0x00ff;
  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 / 0xffff;
  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
    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
  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
      && (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);
    }

  return false;
#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:	1.32
Committed:	Sun Jan 29 22:30:21 2006 UTC (18 years, 3 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.31:	+4 -4 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			{
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			#if ENABLE_FRILLS
55			"_MOTIF_WM_HINTS",
56			#endif
57			#if ENABLE_EWMH
58			"_NET_WM_PID",
59			"_NET_WM_NAME",
60			"_NET_WM_ICON_NAME",
61			"_NET_WM_PING",
62			#endif
63			#if USE_XIM
64			"WM_LOCALE_NAME",
65			"XIM_SERVERS",
66			#endif
67			#ifdef TRANSPARENT
68			"_XROOTPMAP_ID",
69			"ESETROOT_PMAP_ID",
70			#endif
71			#if ENABLE_XEMBED
72			"_XEMBED",
73			"_XEMBED_INFO",
74			#endif
75			};
76
77			/////////////////////////////////////////////////////////////////////////////
78
79	root	1.1	refcounted::refcounted (const char *id)
80			{
81	root	1.2	this->id = strdup (id);
82	root	1.1	}
83
84			refcounted::~refcounted ()
85			{
86			free (id);
87			}
88
89			template<class T>
90			T refcache<T>::get (const char id)
91			{
92			for (T **i = this->begin (); i < this->end (); ++i)
93			{
94			if (!strcmp (id, (*i)->id))
95			{
96	root	1.23	++(*i)->referenced;
97			(*i)->ref_next ();
98	root	1.1	return *i;
99			}
100			}
101
102			T *obj = new T (id);
103
104	root	1.23	if (obj && obj->ref_init ())
105	root	1.1	{
106	root	1.23	obj->referenced = 1;
107	root	1.1	this->push_back (obj);
108			return obj;
109			}
110			else
111			{
112			delete obj;
113			return 0;
114			}
115			}
116
117			template<class T>
118			void refcache<T>::put (T *obj)
119			{
120			if (!obj)
121			return;
122
123			if (!--obj->referenced)
124			{
125			this->erase (find (this->begin (), this->end (), obj));
126			delete obj;
127			}
128			}
129
130			template<class T>
131	root	1.12	void refcache<T>::clear ()
132	root	1.1	{
133			while (this->size ())
134			put (*this->begin ());
135			}
136
137			/////////////////////////////////////////////////////////////////////////////
138
139			#ifdef USE_XIM
140	root	1.24
141	root	1.1	static void
142			#if XIMCB_PROTO_BROKEN
143			im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3)
144			#else
145			im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
146			#endif
147			{
148			rxvt_xim xim = (rxvt_xim )client_data;
149			rxvt_display *display = xim->display;
150
151	root	1.5	xim->xim = 0;
152
153	root	1.1	display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
154			display->im_change_cb ();
155			}
156
157	root	1.23	bool
158			rxvt_xim::ref_init ()
159	root	1.1	{
160			display = GET_R->display; //HACK: TODO
161
162			xim = XOpenIM (display->display, NULL, NULL, NULL);
163
164			if (!xim)
165			return false;
166
167			XIMCallback ximcallback;
168			ximcallback.client_data = (XPointer)this;
169			ximcallback.callback = im_destroy_cb;
170
171			XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
172
173			return true;
174			}
175
176			rxvt_xim::~rxvt_xim ()
177			{
178			if (xim)
179			XCloseIM (xim);
180			}
181	root	1.24
182	root	1.1	#endif
183
184			/////////////////////////////////////////////////////////////////////////////
185
186	root	1.26	void
187			rxvt_screen::set (rxvt_display *disp)
188			{
189			display = disp;
190	root	1.27	xdisp = disp->display;
191	root	1.26
192			Screen *screen = ScreenOfDisplay (xdisp, disp->screen);
193
194	root	1.27	depth = DefaultDepthOfScreen (screen);
195			visual = DefaultVisualOfScreen (screen);
196			cmap = DefaultColormapOfScreen (screen);
197	root	1.26	}
198
199			void
200	root	1.28	rxvt_screen::set (rxvt_display *disp, int bitdepth)
201	root	1.26	{
202			set (disp);
203
204	root	1.31	#if XFT
205	root	1.26	XVisualInfo vinfo;
206
207	root	1.28	if (XMatchVisualInfo (xdisp, display->screen, bitdepth, TrueColor, &vinfo))
208	root	1.26	{
209	root	1.28	depth = bitdepth;
210			visual = vinfo.visual;
211			cmap = XCreateColormap (xdisp, disp->root, visual, AllocNone);
212	root	1.26	}
213	root	1.31	#endif
214	root	1.26	}
215
216			void
217			rxvt_screen::clear ()
218			{
219			if (cmap != DefaultColormapOfScreen (ScreenOfDisplay (xdisp, display->screen)))
220			XFreeColormap (xdisp, cmap);
221			}
222
223			/////////////////////////////////////////////////////////////////////////////
224
225	root	1.1	rxvt_display::rxvt_display (const char *id)
226			: refcounted (id)
227			, x_ev (this, &rxvt_display::x_cb)
228			, selection_owner (0)
229			{
230			}
231
232	root	1.23	XrmDatabase
233			rxvt_display::get_resources ()
234			{
235			char homedir = (char )getenv ("HOME");
236			char fname[1024];
237
238			/*
239			* get resources using the X library function
240			*/
241			char displayResource, xe;
242			XrmDatabase database, rdb1;
243
244			database = NULL;
245
246			// for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20
247
248			// 6. System wide per application default file.
249
250			/* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */
251			if ((xe = (char *)getenv ("XAPPLRESDIR")))
252			{
253			snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS);
254
255			if ((rdb1 = XrmGetFileDatabase (fname)))
256			XrmMergeDatabases (rdb1, &database);
257			}
258
259			// 5. User's per application default file.
260			// none
261
262			// 4. User's defaults file.
263			/* Get any Xserver defaults */
264			displayResource = XResourceManagerString (display);
265
266			if (displayResource != NULL)
267			{
268			if ((rdb1 = XrmGetStringDatabase (displayResource)))
269			XrmMergeDatabases (rdb1, &database);
270			}
271			else if (homedir)
272			{
273			snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir);
274
275			if ((rdb1 = XrmGetFileDatabase (fname)))
276			XrmMergeDatabases (rdb1, &database);
277			}
278
279			/* Get screen specific resources */
280			displayResource = XScreenResourceString (ScreenOfDisplay (display, screen));
281
282			if (displayResource != NULL)
283			{
284			if ((rdb1 = XrmGetStringDatabase (displayResource)))
285			/* Merge with screen-independent resources */
286			XrmMergeDatabases (rdb1, &database);
287
288			XFree (displayResource);
289			}
290
291			// 3. User's per host defaults file
292			/* Add in XENVIRONMENT file */
293			if ((xe = (char *)getenv ("XENVIRONMENT"))
294			&& (rdb1 = XrmGetFileDatabase (xe)))
295			XrmMergeDatabases (rdb1, &database);
296			else if (homedir)
297			{
298			struct utsname un;
299
300			if (!uname (&un))
301			{
302			snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename);
303
304			if ((rdb1 = XrmGetFileDatabase (fname)))
305			XrmMergeDatabases (rdb1, &database);
306			}
307			}
308
309			return database;
310			}
311
312			bool rxvt_display::ref_init ()
313	root	1.1	{
314	root	1.14	#ifdef LOCAL_X_IS_UNIX
315			if (id[0] == ':')
316			{
317			val = rxvt_malloc (5 + strlen (id) + 1);
318			strcpy (val, "unix/");
319			strcat (val, id);
320			display = XOpenDisplay (val);
321			free (val);
322			}
323			else
324	root	1.15	#endif
325	root	1.14	display = 0;
326
327			if (!display)
328			display = XOpenDisplay (id);
329	root	1.1
330			if (!display)
331			return false;
332
333			screen = DefaultScreen (display);
334			root = DefaultRootWindow (display);
335
336	root	1.25	assert (sizeof (xa_names) / sizeof (char *) == NUM_XA);
337			XInternAtoms (display, (char **)xa_names, NUM_XA, False, xa);
338
339	root	1.23	XrmSetDatabase (display, get_resources ());
340	root	1.1
341	root	1.12	#ifdef POINTER_BLANK
342			XColor blackcolour;
343			blackcolour.red = 0;
344			blackcolour.green = 0;
345			blackcolour.blue = 0;
346			Font f = XLoadFont (display, "fixed");
347			blank_cursor = XCreateGlyphCursor (display, f, f, ' ', ' ',
348			&blackcolour, &blackcolour);
349			XUnloadFont (display, f);
350			#endif
351
352	root	1.23	int fd = XConnectionNumber (display);
353
354			#ifndef NO_SLOW_LINK_SUPPORT
355			// try to detect wether we have a local connection.
356			// assume unix domains socket == local, everything else not
357			// TODO: might want to check for inet/127.0.0.1
358			is_local = 0;
359			sockaddr_un sa;
360			socklen_t sl = sizeof (sa);
361
362			if (!getsockname (fd, (sockaddr *)&sa, &sl))
363			is_local = sa.sun_family == AF_LOCAL;
364			#endif
365
366	root	1.1	x_ev.start (fd, EVENT_READ);
367			fcntl (fd, F_SETFD, FD_CLOEXEC);
368
369			XSelectInput (display, root, PropertyChangeMask);
370
371			flush ();
372
373			return true;
374			}
375
376	root	1.23	void
377			rxvt_display::ref_next ()
378			{
379			// TODO: somehow check wether the database files/resources changed
380			// before re-loading/parsing
381			XrmDestroyDatabase (XrmGetDatabase (display));
382			XrmSetDatabase (display, get_resources ());
383			}
384
385	root	1.1	rxvt_display::~rxvt_display ()
386			{
387	root	1.22	if (!display)
388			return;
389
390	root	1.21	#ifdef POINTER_BLANK
391			XFreeCursor (display, blank_cursor);
392			#endif
393	root	1.1	x_ev.stop ();
394	root	1.12	#ifdef USE_XIM
395			xims.clear ();
396			#endif
397	root	1.22	XCloseDisplay (display);
398	root	1.1	}
399
400			#ifdef USE_XIM
401			void rxvt_display::im_change_cb ()
402			{
403			for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
404			(*i)->call ();
405			}
406	root	1.5
407			void rxvt_display::im_change_check ()
408			{
409	root	1.13	// try to only call im_change_cb when a new input method
410	root	1.5	// registers, as xlib crashes due to a race otherwise.
411			Atom actual_type, *atoms;
412			int actual_format;
413			unsigned long nitems, bytes_after;
414
415	root	1.25	if (XGetWindowProperty (display, root, xa[XA_XIM_SERVERS], 0L, 1000000L,
416	root	1.5	False, XA_ATOM, &actual_type, &actual_format,
417			&nitems, &bytes_after, (unsigned char **)&atoms)
418			!= Success )
419			return;
420
421			if (actual_type == XA_ATOM && actual_format == 32)
422			for (int i = 0; i < nitems; i++)
423			if (XGetSelectionOwner (display, atoms[i]))
424			{
425			im_change_cb ();
426			break;
427			}
428
429			XFree (atoms);
430			}
431	root	1.1	#endif
432
433			void rxvt_display::x_cb (io_watcher &w, short revents)
434			{
435			do
436			{
437			XEvent xev;
438			XNextEvent (display, &xev);
439
440	root	1.5	#ifdef USE_XIM
441			if (!XFilterEvent (&xev, None))
442			{
443			if (xev.type == PropertyNotify
444			&& xev.xany.window == root
445	root	1.25	&& xev.xproperty.atom == xa[XA_XIM_SERVERS])
446	root	1.5	im_change_check ();
447			#endif
448			for (int i = xw.size (); i--; )
449			{
450			if (!xw[i])
451			xw.erase_unordered (i);
452			else if (xw[i]->window == xev.xany.window)
453			xw[i]->call (xev);
454			}
455	root	1.1	#ifdef USE_XIM
456	root	1.5	}
457	root	1.1	#endif
458			}
459	root	1.6	while (XEventsQueued (display, QueuedAlready));
460	root	1.1
461	root	1.10	XFlush (display);
462	root	1.1	}
463
464			void rxvt_display::flush ()
465			{
466	root	1.10	if (XEventsQueued (display, QueuedAlready))
467			x_cb (x_ev, EVENT_READ);
468
469	root	1.8	XFlush (display);
470	root	1.1	}
471
472			void rxvt_display::reg (xevent_watcher *w)
473			{
474			xw.push_back (w);
475			w->active = xw.size ();
476			}
477
478			void rxvt_display::unreg (xevent_watcher *w)
479			{
480			if (w->active)
481			xw[w->active - 1] = 0;
482			}
483
484			void rxvt_display::set_selection_owner (rxvt_term *owner)
485			{
486			if (selection_owner && selection_owner != owner)
487			selection_owner->selection_clear ();
488
489			selection_owner = owner;
490			}
491
492			#ifdef USE_XIM
493			void rxvt_display::reg (im_watcher *w)
494			{
495			imw.push_back (w);
496			}
497
498			void rxvt_display::unreg (im_watcher *w)
499			{
500			imw.erase (find (imw.begin (), imw.end (), w));
501			}
502
503			rxvt_xim rxvt_display::get_xim (const char locale, const char *modifiers)
504			{
505			char *id;
506			int l, m;
507
508			l = strlen (locale);
509			m = strlen (modifiers);
510
511			if (!(id = (char *)malloc (l + m + 2)))
512			return 0;
513
514			memcpy (id, locale, l); id[l] = '\n';
515			memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
516
517			rxvt_xim *xim = xims.get (id);
518
519			free (id);
520
521			return xim;
522			}
523
524			void rxvt_display::put_xim (rxvt_xim *xim)
525			{
526	root	1.10	#if XLIB_IS_RACEFREE
527	root	1.1	xims.put (xim);
528	root	1.10	#endif
529	root	1.1	}
530			#endif
531
532			Atom rxvt_display::atom (const char *name)
533			{
534			return XInternAtom (display, name, False);
535			}
536
537			/////////////////////////////////////////////////////////////////////////////
538
539			template class refcache<rxvt_display>;
540			refcache<rxvt_display> displays;
541
542			/////////////////////////////////////////////////////////////////////////////
543
544			bool
545	root	1.28	rxvt_color::set (rxvt_screen screen, const char name)
546	root	1.1	{
547			#if XFT
548	root	1.28	int l = strlen (name);
549			rxvt_rgba r;
550			char eos;
551			int mult;
552
553			if ( l == 1+4*1 && 4 == sscanf (name, "#%1hx%1hx%1hx%1hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
554	root	1.29	mult = rxvt_rgba::MAX_CC / 0x000f;
555	root	1.28	else if (l == 1+4*2 && 4 == sscanf (name, "#%2hx%2hx%2hx%2hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
556	root	1.29	mult = rxvt_rgba::MAX_CC / 0x00ff;
557	root	1.28	else if (l == 1+4*4 && 4 == sscanf (name, "#%4hx%4hx%4hx%4hx%c", &r.a, &r.r, &r.g, &r.b, &eos))
558	root	1.29	mult = rxvt_rgba::MAX_CC / 0xffff;
559			else if (l == 4+5*4 && 4 == sscanf (name, "rgba:%hx/%hx/%hx/%hx%c", &r.r, &r.g, &r.b, &r.a, &eos))
560			mult = rxvt_rgba::MAX_CC / 0xffff;
561	root	1.28	else
562			return XftColorAllocName (screen->xdisp, screen->visual, screen->cmap, name, &c);
563	root	1.1
564	root	1.28	r.r = mult; r.g = mult; r.b = mult; r.a = mult;
565			return set (screen, r);
566	root	1.7	#else
567	root	1.1	XColor xc;
568
569	root	1.26	if (XParseColor (screen->xdisp, screen->cmap, name, &xc))
570	root	1.28	return set (screen, rxvt_rgba (xc.red, xc.green, xc.blue));
571	root	1.1
572			return false;
573	root	1.7	#endif
574	root	1.1	}
575
576			bool
577	root	1.28	rxvt_color::set (rxvt_screen *screen, rxvt_rgba rgba)
578	root	1.1	{
579	root	1.28	#if XFT
580	root	1.31	XRenderPictFormat *format;
581	root	1.28
582	root	1.31	// FUCKING Xft gets it wrong, of course, so work around it
583			// transparency users should eat shit and die, and then
584			// XRenderQueryPictIndexValues themselves plenty.
585			if (screen->visual->c_class == TrueColor
586			&& (format = XRenderFindVisualFormat (screen->xdisp, screen->visual)))
587			{
588			// the fun lies in doing everything manually...
589			c.color.red = rgba.r;
590			c.color.green = rgba.g;
591			c.color.blue = rgba.b;
592			c.color.alpha = rgba.a;
593
594	root	1.32	c.pixel = ((rgba.r * format->direct.redMask / rxvt_rgba::MAX_CC) << format->direct.red)
595			\| ((rgba.g * format->direct.greenMask / rxvt_rgba::MAX_CC) << format->direct.green)
596			\| ((rgba.b * format->direct.blueMask / rxvt_rgba::MAX_CC) << format->direct.blue)
597			\| ((rgba.a * format->direct.alphaMask / rxvt_rgba::MAX_CC) << format->direct.alpha);
598	root	1.29
599			return true;
600			}
601	root	1.31	else
602			{
603			XRenderColor d;
604
605			d.red = rgba.r;
606			d.green = rgba.g;
607			d.blue = rgba.b;
608			d.alpha = rgba.a;
609
610			return XftColorAllocValue (screen->xdisp, screen->visual, screen->cmap, &d, &c);
611			}
612	root	1.29
613			return false;
614	root	1.28	#else
615	root	1.1	XColor xc;
616
617	root	1.28	xc.red = rgba.r;
618			xc.green = rgba.g;
619			xc.blue = rgba.b;
620	root	1.1	xc.flags = DoRed \| DoGreen \| DoBlue;
621
622	root	1.26	if (XAllocColor (screen->xdisp, screen->cmap, &xc))
623	root	1.28	{
624			p = xc.pixel;
625			return true;
626			}
627	root	1.1
628			return false;
629	root	1.28	#endif
630	root	1.1	}
631
632			void
633	root	1.28	rxvt_color::get (rxvt_screen *screen, rxvt_rgba &rgba)
634	root	1.1	{
635			#if XFT
636	root	1.28	rgba.r = c.color.red;
637			rgba.g = c.color.green;
638			rgba.b = c.color.blue;
639			rgba.a = c.color.alpha;
640	root	1.1	#else
641			XColor c;
642
643			c.pixel = p;
644	root	1.26	XQueryColor (screen->xdisp, screen->cmap, &c);
645	root	1.1
646	root	1.28	rgba.r = c.red;
647			rgba.g = c.green;
648			rgba.b = c.blue;
649			rgba.a = rxvt_rgba::MAX_CC;
650	root	1.1	#endif
651			}
652
653			void
654	root	1.26	rxvt_color::free (rxvt_screen *screen)
655	root	1.1	{
656			#if XFT
657	root	1.26	XftColorFree (screen->xdisp, screen->visual, screen->cmap, &c);
658	root	1.1	#else
659	root	1.26	XFreeColors (screen->xdisp, screen->cmap, &p, 1, AllPlanes);
660	root	1.1	#endif
661			}
662
663			rxvt_color
664	root	1.26	rxvt_color::fade (rxvt_screen *screen, int percent)
665	root	1.1	{
666	root	1.28	rxvt_color faded;
667	root	1.18
668	root	1.28	rxvt_rgba c;
669			get (screen, c);
670	root	1.1
671	root	1.28	c.r = lerp (0, c.r, percent);
672			c.g = lerp (0, c.g, percent);
673			c.b = lerp (0, c.b, percent);
674	root	1.18
675	root	1.28	faded.set (screen, c);
676	root	1.18
677			return faded;
678			}
679
680			rxvt_color
681	root	1.26	rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &fadeto)
682	root	1.18	{
683	root	1.28	rxvt_rgba c, fc;
684	root	1.18	rxvt_color faded;
685
686	root	1.28	get (screen, c);
687			fadeto.get (screen, fc);
688	root	1.18
689			faded.set (
690	root	1.26	screen,
691	root	1.28	rxvt_rgba (
692			lerp (fc.r, c.r, percent),
693			lerp (fc.g, c.g, percent),
694			lerp (fc.b, c.b, percent),
695			lerp (fc.a, c.a, percent)
696			)
697	root	1.18	);
698	root	1.1
699			return faded;
700			}
701