rxvt-unicode/src/rxvttoolkit.C

/*--------------------------------*-C-*---------------------------------*
 * File:        rxvtcolor.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;

  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 ();
}
#endif

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

      //printf ("T %d w %lx\n", xev.type, xev.xany.window);//D

#ifdef USE_XIM
      if (xev.type == PropertyNotify
          && xev.xany.window == root
          && xev.xproperty.atom == xa_xim_servers)
        im_change_cb ();
#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);
        }
    }
  while (XPending (display));

  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:	1.1
Committed:	Sun Aug 15 00:37:04 2004 UTC (19 years, 9 months ago) by root
Content type:	text/plain
Branch:	MAIN
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	/---------------------------------C----------------------------------
2			* File: rxvtcolor.C
3			----------------------------------------------------------------------
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			this->id = STRDUP (id);
38			}
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			display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
107
108			display->im_change_cb ();
109			}
110
111			bool rxvt_xim::init ()
112			{
113			display = GET_R->display; //HACK: TODO
114
115			xim = XOpenIM (display->display, NULL, NULL, NULL);
116
117			if (!xim)
118			return false;
119
120			XIMCallback ximcallback;
121			ximcallback.client_data = (XPointer)this;
122			ximcallback.callback = im_destroy_cb;
123
124			XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
125
126			return true;
127			}
128
129			rxvt_xim::~rxvt_xim ()
130			{
131			if (xim)
132			XCloseIM (xim);
133			}
134			#endif
135
136			/////////////////////////////////////////////////////////////////////////////
137
138			rxvt_display::rxvt_display (const char *id)
139			: refcounted (id)
140			, x_ev (this, &rxvt_display::x_cb)
141			, selection_owner (0)
142			{
143			}
144
145			bool rxvt_display::init ()
146			{
147			display = XOpenDisplay (id);
148
149			if (!display)
150			return false;
151
152			screen = DefaultScreen (display);
153			root = DefaultRootWindow (display);
154			visual = DefaultVisual (display, screen);
155			cmap = DefaultColormap (display, screen);
156			depth = DefaultDepth (display, screen);
157
158			int fd = XConnectionNumber (display);
159
160			#ifndef NO_SLOW_LINK_SUPPORT
161			// try to detetc wether we have a local connection.
162			// assume unix domains socket == local, everything else not
163			// TODO: might want to check for inet/127.0.0.1
164			is_local = 0;
165			sockaddr_un sa;
166			socklen_t sl = sizeof (sa);
167
168			if (!getsockname (fd, (sockaddr *)&sa, &sl))
169			is_local = sa.sun_family == AF_LOCAL;
170			#endif
171
172			#ifdef PREFER_24BIT
173			/*
174			* If depth is not 24, look for a 24bit visual.
175			*/
176			if (depth != 24)
177			{
178			XVisualInfo vinfo;
179
180			if (XMatchVisualInfo (display, screen, 24, TrueColor, &vinfo))
181			{
182			depth = 24;
183			visual = vinfo.visual;
184			cmap = XCreateColormap (display,
185			RootWindow (display, screen),
186			visual, AllocNone);
187			}
188			}
189			#endif
190
191			x_ev.start (fd, EVENT_READ);
192			fcntl (fd, F_SETFD, FD_CLOEXEC);
193
194			XSelectInput (display, root, PropertyChangeMask);
195			#ifdef USE_XIM
196			xa_xim_servers = XInternAtom (display, "XIM_SERVERS", 0);
197			#endif
198
199			flush ();
200
201			return true;
202			}
203
204			rxvt_display::~rxvt_display ()
205			{
206			x_ev.stop ();
207
208			if (display)
209			XCloseDisplay (display);
210			}
211
212			#ifdef USE_XIM
213			void rxvt_display::im_change_cb ()
214			{
215			for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
216			(*i)->call ();
217			}
218			#endif
219
220			void rxvt_display::x_cb (io_watcher &w, short revents)
221			{
222			do
223			{
224			XEvent xev;
225			XNextEvent (display, &xev);
226
227			//printf ("T %d w %lx\n", xev.type, xev.xany.window);//D
228
229			#ifdef USE_XIM
230			if (xev.type == PropertyNotify
231			&& xev.xany.window == root
232			&& xev.xproperty.atom == xa_xim_servers)
233			im_change_cb ();
234			#endif
235
236			for (int i = xw.size (); i--; )
237			{
238			if (!xw[i])
239			xw.erase_unordered (i);
240			else if (xw[i]->window == xev.xany.window)
241			xw[i]->call (xev);
242			}
243			}
244			while (XPending (display));
245
246			flush ();
247			}
248
249			void rxvt_display::flush ()
250			{
251			for (;;)
252			{
253			if (!XPending (display))
254			break;
255
256			x_cb (x_ev, 0);
257			}
258			}
259
260			void rxvt_display::reg (xevent_watcher *w)
261			{
262			xw.push_back (w);
263			w->active = xw.size ();
264			}
265
266			void rxvt_display::unreg (xevent_watcher *w)
267			{
268			if (w->active)
269			xw[w->active - 1] = 0;
270			}
271
272			void rxvt_display::set_selection_owner (rxvt_term *owner)
273			{
274			if (selection_owner && selection_owner != owner)
275			selection_owner->selection_clear ();
276
277			selection_owner = owner;
278			}
279
280			#ifdef USE_XIM
281			void rxvt_display::reg (im_watcher *w)
282			{
283			imw.push_back (w);
284			}
285
286			void rxvt_display::unreg (im_watcher *w)
287			{
288			imw.erase (find (imw.begin (), imw.end (), w));
289			}
290
291			rxvt_xim rxvt_display::get_xim (const char locale, const char *modifiers)
292			{
293			char *id;
294			int l, m;
295
296			l = strlen (locale);
297			m = strlen (modifiers);
298
299			if (!(id = (char *)malloc (l + m + 2)))
300			return 0;
301
302			memcpy (id, locale, l); id[l] = '\n';
303			memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
304
305			rxvt_xim *xim = xims.get (id);
306
307			free (id);
308
309			return xim;
310			}
311
312			void rxvt_display::put_xim (rxvt_xim *xim)
313			{
314			xims.put (xim);
315			}
316			#endif
317
318			Atom rxvt_display::atom (const char *name)
319			{
320			return XInternAtom (display, name, False);
321			}
322
323			/////////////////////////////////////////////////////////////////////////////
324
325			template class refcache<rxvt_display>;
326			refcache<rxvt_display> displays;
327
328			/////////////////////////////////////////////////////////////////////////////
329
330			bool
331			rxvt_color::set (rxvt_display *display, Pixel p)
332			{
333			#if XFT
334			XColor xc;
335
336			xc.pixel = p;
337			if (!XQueryColor (display->display, display->cmap, &xc))
338			return false;
339
340			XRenderColor d;
341
342			d.red = xc.red;
343			d.green = xc.green;
344			d.blue = xc.blue;
345			d.alpha = 0xffff;
346
347			return
348			XftColorAllocValue (display->display,
349			display->visual,
350			display->cmap,
351			&d, &c);
352			#else
353			this->p = p;
354			#endif
355
356			return true;
357			}
358
359			bool
360			rxvt_color::set (rxvt_display display, const char name)
361			{
362			XColor xc;
363
364			if (XParseColor (display->display, display->cmap, name, &xc))
365			return set (display, xc.red, xc.green, xc.blue);
366
367			return false;
368			}
369
370			bool
371			rxvt_color::set (rxvt_display *display, unsigned short cr, unsigned short cg, unsigned short cb)
372			{
373			XColor xc;
374
375			xc.red = cr;
376			xc.green = cg;
377			xc.blue = cb;
378			xc.flags = DoRed \| DoGreen \| DoBlue;
379
380			if (XAllocColor (display->display, display->cmap, &xc))
381			return set (display, xc.pixel);
382
383			return false;
384			}
385
386			void
387			rxvt_color::get (rxvt_display *display, unsigned short &cr, unsigned short &cg, unsigned short &cb)
388			{
389			#if XFT
390			cr = c.color.red;
391			cg = c.color.green;
392			cb = c.color.blue;
393			#else
394			XColor c;
395
396			c.pixel = p;
397			XQueryColor (display->display, display->cmap, &c);
398
399			cr = c.red;
400			cg = c.green;
401			cb = c.blue;
402			#endif
403			}
404
405			void
406			rxvt_color::free (rxvt_display *display)
407			{
408			#if XFT
409			XftColorFree (display->display, display->visual, display->cmap, &c);
410			#else
411			XFreeColors (display->display, display->cmap, &p, 1, AllPlanes);
412			#endif
413			}
414
415			rxvt_color
416			rxvt_color::fade (rxvt_display *display, int percent)
417			{
418			unsigned short cr, cg, cb;
419			rxvt_color faded;
420
421			get (display, cr, cg, cb);
422			faded.set (display,
423			cr * percent / 100,
424			cg * percent / 100,
425			cb * percent / 100);
426
427			return faded;
428			}
429