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>

#ifndef NO_SLOW_LINK_SUPPORT
# include <sys/socket.h>
# include <sys/un.h>
#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++;
          return *i;
        }
    }

  T *obj = new T (id);

  obj->referenced = 1;

  if (obj && obj->init ())
    {
      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>
refcache<T>::~refcache ()
{
  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::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

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

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

bool rxvt_display::init ()
{
  display = XOpenDisplay (id);

  if (!display)
    return false;

  screen = DefaultScreen (display);
  root   = DefaultRootWindow (display);
  visual = DefaultVisual (display, screen);
  cmap   = DefaultColormap (display, screen);
  depth  = DefaultDepth (display, screen);

  int fd = XConnectionNumber (display);

#ifndef NO_SLOW_LINK_SUPPORT
  // try to detetc 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

#ifdef PREFER_24BIT
  /*
   * If depth is not 24, look for a 24bit visual.
   */
  if (depth != 24)
    {
      XVisualInfo vinfo;

      if (XMatchVisualInfo (display, screen, 24, TrueColor, &vinfo))
        {
          depth = 24;
          visual = vinfo.visual;
          cmap = XCreateColormap (display,
                                  RootWindow (display, screen),
                                  visual, AllocNone);
        }
    }
#endif

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

  XSelectInput (display, root, PropertyChangeMask);
#ifdef USE_XIM
  xa_xim_servers = XInternAtom (display, "XIM_SERVERS", 0);
#endif

  flush ();

  return true;
}

rxvt_display::~rxvt_display ()
{
  x_ev.stop ();

  if (display)
    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 ()
{
  // make sure we 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_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_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));

  flush ();
}

void rxvt_display::flush ()
{
  for (;;)
    {
      if (!XPending (display))
        break;

      x_cb (x_ev, 0);
    }
}

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)
{
  xims.put (xim);
}
#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_display *display, Pixel p)
{
#if XFT
  XColor xc;

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

  XRenderColor d;

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

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

  return true;
}

bool
rxvt_color::set (rxvt_display *display, const char *name)
{
  XColor xc;

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

  return false;
}

bool
rxvt_color::set (rxvt_display *display, 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 (display->display, display->cmap, &xc))
    return set (display, xc.pixel);

  return false;
}

void 
rxvt_color::get (rxvt_display *display, 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 (display->display, display->cmap, &c);

  cr = c.red;
  cg = c.green;
  cb = c.blue;
#endif
}

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

rxvt_color
rxvt_color::fade (rxvt_display *display, int percent)
{
  unsigned short cr, cg, cb;
  rxvt_color faded;

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

  return faded;
}

Revision:	1.6
Committed:	Sat Dec 11 17:18:29 2004 UTC (19 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-4_4
Changes since 1.5:	+1 -1 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			#ifndef NO_SLOW_LINK_SUPPORT
31			# include <sys/socket.h>
32			# include <sys/un.h>
33			#endif
34
35			refcounted::refcounted (const char *id)
36			{
37	root	1.2	this->id = strdup (id);
38	root	1.1	}
39
40			refcounted::~refcounted ()
41			{
42			free (id);
43			}
44
45			template<class T>
46			T refcache<T>::get (const char id)
47			{
48			for (T **i = this->begin (); i < this->end (); ++i)
49			{
50			if (!strcmp (id, (*i)->id))
51			{
52			(*i)->referenced++;
53			return *i;
54			}
55			}
56
57			T *obj = new T (id);
58
59			obj->referenced = 1;
60
61			if (obj && obj->init ())
62			{
63			this->push_back (obj);
64			return obj;
65			}
66			else
67			{
68			delete obj;
69			return 0;
70			}
71			}
72
73			template<class T>
74			void refcache<T>::put (T *obj)
75			{
76			if (!obj)
77			return;
78
79			if (!--obj->referenced)
80			{
81			this->erase (find (this->begin (), this->end (), obj));
82			delete obj;
83			}
84			}
85
86			template<class T>
87			refcache<T>::~refcache ()
88			{
89			while (this->size ())
90			put (*this->begin ());
91			}
92
93			/////////////////////////////////////////////////////////////////////////////
94
95			#ifdef USE_XIM
96			static void
97			#if XIMCB_PROTO_BROKEN
98			im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3)
99			#else
100			im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
101			#endif
102			{
103			rxvt_xim xim = (rxvt_xim )client_data;
104			rxvt_display *display = xim->display;
105
106	root	1.5	xim->xim = 0;
107
108	root	1.1	display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
109			display->im_change_cb ();
110			}
111
112			bool rxvt_xim::init ()
113			{
114			display = GET_R->display; //HACK: TODO
115
116			xim = XOpenIM (display->display, NULL, NULL, NULL);
117
118			if (!xim)
119			return false;
120
121			XIMCallback ximcallback;
122			ximcallback.client_data = (XPointer)this;
123			ximcallback.callback = im_destroy_cb;
124
125			XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
126
127			return true;
128			}
129
130			rxvt_xim::~rxvt_xim ()
131			{
132			if (xim)
133			XCloseIM (xim);
134			}
135			#endif
136
137			/////////////////////////////////////////////////////////////////////////////
138
139			rxvt_display::rxvt_display (const char *id)
140			: refcounted (id)
141			, x_ev (this, &rxvt_display::x_cb)
142			, selection_owner (0)
143			{
144			}
145
146			bool rxvt_display::init ()
147			{
148			display = XOpenDisplay (id);
149
150			if (!display)
151			return false;
152
153			screen = DefaultScreen (display);
154			root = DefaultRootWindow (display);
155			visual = DefaultVisual (display, screen);
156			cmap = DefaultColormap (display, screen);
157			depth = DefaultDepth (display, screen);
158
159			int fd = XConnectionNumber (display);
160
161			#ifndef NO_SLOW_LINK_SUPPORT
162			// try to detetc wether we have a local connection.
163			// assume unix domains socket == local, everything else not
164			// TODO: might want to check for inet/127.0.0.1
165			is_local = 0;
166			sockaddr_un sa;
167			socklen_t sl = sizeof (sa);
168
169			if (!getsockname (fd, (sockaddr *)&sa, &sl))
170			is_local = sa.sun_family == AF_LOCAL;
171			#endif
172
173			#ifdef PREFER_24BIT
174			/*
175			* If depth is not 24, look for a 24bit visual.
176			*/
177			if (depth != 24)
178			{
179			XVisualInfo vinfo;
180
181			if (XMatchVisualInfo (display, screen, 24, TrueColor, &vinfo))
182			{
183			depth = 24;
184			visual = vinfo.visual;
185			cmap = XCreateColormap (display,
186			RootWindow (display, screen),
187			visual, AllocNone);
188			}
189			}
190			#endif
191
192			x_ev.start (fd, EVENT_READ);
193			fcntl (fd, F_SETFD, FD_CLOEXEC);
194
195			XSelectInput (display, root, PropertyChangeMask);
196			#ifdef USE_XIM
197			xa_xim_servers = XInternAtom (display, "XIM_SERVERS", 0);
198			#endif
199
200			flush ();
201
202			return true;
203			}
204
205			rxvt_display::~rxvt_display ()
206			{
207			x_ev.stop ();
208
209			if (display)
210			XCloseDisplay (display);
211			}
212
213			#ifdef USE_XIM
214			void rxvt_display::im_change_cb ()
215			{
216			for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
217			(*i)->call ();
218			}
219	root	1.5
220			void rxvt_display::im_change_check ()
221			{
222			// make sure we only call im_change_cb when a new input method
223			// registers, as xlib crashes due to a race otherwise.
224			Atom actual_type, *atoms;
225			int actual_format;
226			unsigned long nitems, bytes_after;
227
228			if (XGetWindowProperty (display, root, xa_xim_servers, 0L, 1000000L,
229			False, XA_ATOM, &actual_type, &actual_format,
230			&nitems, &bytes_after, (unsigned char **)&atoms)
231			!= Success )
232			return;
233
234			if (actual_type == XA_ATOM && actual_format == 32)
235			for (int i = 0; i < nitems; i++)
236			if (XGetSelectionOwner (display, atoms[i]))
237			{
238			im_change_cb ();
239			break;
240			}
241
242			XFree (atoms);
243			}
244	root	1.1	#endif
245
246			void rxvt_display::x_cb (io_watcher &w, short revents)
247			{
248			do
249			{
250			XEvent xev;
251			XNextEvent (display, &xev);
252
253	root	1.5	#ifdef USE_XIM
254			if (!XFilterEvent (&xev, None))
255			{
256	root	1.1
257	root	1.5	if (xev.type == PropertyNotify
258			&& xev.xany.window == root
259			&& xev.xproperty.atom == xa_xim_servers)
260			im_change_check ();
261			#endif
262			for (int i = xw.size (); i--; )
263			{
264			if (!xw[i])
265			xw.erase_unordered (i);
266			else if (xw[i]->window == xev.xany.window)
267			xw[i]->call (xev);
268			}
269	root	1.1	#ifdef USE_XIM
270	root	1.5	}
271	root	1.1	#endif
272			}
273	root	1.6	while (XEventsQueued (display, QueuedAlready));
274	root	1.1
275			flush ();
276			}
277
278			void rxvt_display::flush ()
279			{
280			for (;;)
281			{
282			if (!XPending (display))
283			break;
284
285			x_cb (x_ev, 0);
286			}
287			}
288
289			void rxvt_display::reg (xevent_watcher *w)
290			{
291			xw.push_back (w);
292			w->active = xw.size ();
293			}
294
295			void rxvt_display::unreg (xevent_watcher *w)
296			{
297			if (w->active)
298			xw[w->active - 1] = 0;
299			}
300
301			void rxvt_display::set_selection_owner (rxvt_term *owner)
302			{
303			if (selection_owner && selection_owner != owner)
304			selection_owner->selection_clear ();
305
306			selection_owner = owner;
307			}
308
309			#ifdef USE_XIM
310			void rxvt_display::reg (im_watcher *w)
311			{
312			imw.push_back (w);
313			}
314
315			void rxvt_display::unreg (im_watcher *w)
316			{
317			imw.erase (find (imw.begin (), imw.end (), w));
318			}
319
320			rxvt_xim rxvt_display::get_xim (const char locale, const char *modifiers)
321			{
322			char *id;
323			int l, m;
324
325			l = strlen (locale);
326			m = strlen (modifiers);
327
328			if (!(id = (char *)malloc (l + m + 2)))
329			return 0;
330
331			memcpy (id, locale, l); id[l] = '\n';
332			memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
333
334			rxvt_xim *xim = xims.get (id);
335
336			free (id);
337
338			return xim;
339			}
340
341			void rxvt_display::put_xim (rxvt_xim *xim)
342			{
343			xims.put (xim);
344			}
345			#endif
346
347			Atom rxvt_display::atom (const char *name)
348			{
349			return XInternAtom (display, name, False);
350			}
351
352			/////////////////////////////////////////////////////////////////////////////
353
354			template class refcache<rxvt_display>;
355			refcache<rxvt_display> displays;
356
357			/////////////////////////////////////////////////////////////////////////////
358
359			bool
360			rxvt_color::set (rxvt_display *display, Pixel p)
361			{
362			#if XFT
363			XColor xc;
364
365			xc.pixel = p;
366			if (!XQueryColor (display->display, display->cmap, &xc))
367			return false;
368
369			XRenderColor d;
370
371			d.red = xc.red;
372			d.green = xc.green;
373			d.blue = xc.blue;
374			d.alpha = 0xffff;
375
376			return
377			XftColorAllocValue (display->display,
378			display->visual,
379			display->cmap,
380			&d, &c);
381			#else
382			this->p = p;
383			#endif
384
385			return true;
386			}
387
388			bool
389			rxvt_color::set (rxvt_display display, const char name)
390			{
391			XColor xc;
392
393			if (XParseColor (display->display, display->cmap, name, &xc))
394			return set (display, xc.red, xc.green, xc.blue);
395
396			return false;
397			}
398
399			bool
400			rxvt_color::set (rxvt_display *display, unsigned short cr, unsigned short cg, unsigned short cb)
401			{
402			XColor xc;
403
404			xc.red = cr;
405			xc.green = cg;
406			xc.blue = cb;
407			xc.flags = DoRed \| DoGreen \| DoBlue;
408
409			if (XAllocColor (display->display, display->cmap, &xc))
410			return set (display, xc.pixel);
411
412			return false;
413			}
414
415			void
416			rxvt_color::get (rxvt_display *display, unsigned short &cr, unsigned short &cg, unsigned short &cb)
417			{
418			#if XFT
419			cr = c.color.red;
420			cg = c.color.green;
421			cb = c.color.blue;
422			#else
423			XColor c;
424
425			c.pixel = p;
426			XQueryColor (display->display, display->cmap, &c);
427
428			cr = c.red;
429			cg = c.green;
430			cb = c.blue;
431			#endif
432			}
433
434			void
435			rxvt_color::free (rxvt_display *display)
436			{
437			#if XFT
438			XftColorFree (display->display, display->visual, display->cmap, &c);
439			#else
440			XFreeColors (display->display, display->cmap, &p, 1, AllPlanes);
441			#endif
442			}
443
444			rxvt_color
445			rxvt_color::fade (rxvt_display *display, int percent)
446			{
447			unsigned short cr, cg, cb;
448			rxvt_color faded;
449
450			get (display, cr, cg, cb);
451			faded.set (display,
452			cr * percent / 100,
453			cg * percent / 100,
454			cb * percent / 100);
455
456			return faded;
457			}
458