rxvt-unicode/src/rxvtcolor.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 <rxvtcolor.h>

#include <unistd.h>
#include <fcntl.h>

#ifndef NO_SLOW_LINK_SUPPORT
# include <sys/socket.h>
# include <sys/un.h>
#endif

class byteorder byteorder;

byteorder::byteorder ()
{
  union {
    uint32_t u;
    uint8_t b[4];
  } w;

  w.b[0] = 0x11;
  w.b[1] = 0x22;
  w.b[2] = 0x33;
  w.b[3] = 0x44;

  e = w.u;
}

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:	1.23
Committed:	Sun Aug 15 00:37:04 2004 UTC (19 years, 9 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.22:	+0 -0 lines
State:	*FILE REMOVED*
Log Message:	* empty log message *
#	Content
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 <rxvtcolor.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	class byteorder byteorder;
36
37	byteorder::byteorder ()
38	{
39	union {
40	uint32_t u;
41	uint8_t b[4];
42	} w;
43
44	w.b[0] = 0x11;
45	w.b[1] = 0x22;
46	w.b[2] = 0x33;
47	w.b[3] = 0x44;
48
49	e = w.u;
50	}
51
52	refcounted::refcounted (const char *id)
53	{
54	this->id = STRDUP (id);
55	}
56
57	refcounted::~refcounted ()
58	{
59	free (id);
60	}
61
62	template<class T>
63	T refcache<T>::get (const char id)
64	{
65	for (T **i = this->begin (); i < this->end (); ++i)
66	{
67	if (!strcmp (id, (*i)->id))
68	{
69	(*i)->referenced++;
70	return *i;
71	}
72	}
73
74	T *obj = new T (id);
75
76	obj->referenced = 1;
77
78	if (obj && obj->init ())
79	{
80	this->push_back (obj);
81	return obj;
82	}
83	else
84	{
85	delete obj;
86	return 0;
87	}
88	}
89
90	template<class T>
91	void refcache<T>::put (T *obj)
92	{
93	if (!obj)
94	return;
95
96	if (!--obj->referenced)
97	{
98	this->erase (find (this->begin (), this->end (), obj));
99	delete obj;
100	}
101	}
102
103	template<class T>
104	refcache<T>::~refcache ()
105	{
106	while (this->size ())
107	put (*this->begin ());
108	}
109
110	/////////////////////////////////////////////////////////////////////////////
111
112	#ifdef USE_XIM
113	static void
114	#if XIMCB_PROTO_BROKEN
115	im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3)
116	#else
117	im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
118	#endif
119	{
120	rxvt_xim xim = (rxvt_xim )client_data;
121	rxvt_display *display = xim->display;
122
123	display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
124
125	display->im_change_cb ();
126	}
127
128	bool rxvt_xim::init ()
129	{
130	display = GET_R->display; //HACK: TODO
131
132	xim = XOpenIM (display->display, NULL, NULL, NULL);
133
134	if (!xim)
135	return false;
136
137	XIMCallback ximcallback;
138	ximcallback.client_data = (XPointer)this;
139	ximcallback.callback = im_destroy_cb;
140
141	XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
142
143	return true;
144	}
145
146	rxvt_xim::~rxvt_xim ()
147	{
148	if (xim)
149	XCloseIM (xim);
150	}
151	#endif
152
153	/////////////////////////////////////////////////////////////////////////////
154
155	rxvt_display::rxvt_display (const char *id)
156	: refcounted (id)
157	, x_ev (this, &rxvt_display::x_cb)
158	, selection_owner (0)
159	{
160	}
161
162	bool rxvt_display::init ()
163	{
164	display = XOpenDisplay (id);
165
166	if (!display)
167	return false;
168
169	screen = DefaultScreen (display);
170	root = DefaultRootWindow (display);
171	visual = DefaultVisual (display, screen);
172	cmap = DefaultColormap (display, screen);
173	depth = DefaultDepth (display, screen);
174
175	int fd = XConnectionNumber (display);
176
177	#ifndef NO_SLOW_LINK_SUPPORT
178	// try to detetc wether we have a local connection.
179	// assume unix domains socket == local, everything else not
180	// TODO: might want to check for inet/127.0.0.1
181	is_local = 0;
182	sockaddr_un sa;
183	socklen_t sl = sizeof (sa);
184
185	if (!getsockname (fd, (sockaddr *)&sa, &sl))
186	is_local = sa.sun_family == AF_LOCAL;
187	#endif
188
189	#ifdef PREFER_24BIT
190	/*
191	* If depth is not 24, look for a 24bit visual.
192	*/
193	if (depth != 24)
194	{
195	XVisualInfo vinfo;
196
197	if (XMatchVisualInfo (display, screen, 24, TrueColor, &vinfo))
198	{
199	depth = 24;
200	visual = vinfo.visual;
201	cmap = XCreateColormap (display,
202	RootWindow (display, screen),
203	visual, AllocNone);
204	}
205	}
206	#endif
207
208	x_ev.start (fd, EVENT_READ);
209	fcntl (fd, F_SETFD, FD_CLOEXEC);
210
211	XSelectInput (display, root, PropertyChangeMask);
212	#ifdef USE_XIM
213	xa_xim_servers = XInternAtom (display, "XIM_SERVERS", 0);
214	#endif
215
216	flush ();
217
218	return true;
219	}
220
221	rxvt_display::~rxvt_display ()
222	{
223	x_ev.stop ();
224
225	if (display)
226	XCloseDisplay (display);
227	}
228
229	#ifdef USE_XIM
230	void rxvt_display::im_change_cb ()
231	{
232	for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
233	(*i)->call ();
234	}
235	#endif
236
237	void rxvt_display::x_cb (io_watcher &w, short revents)
238	{
239	do
240	{
241	XEvent xev;
242	XNextEvent (display, &xev);
243
244	//printf ("T %d w %lx\n", xev.type, xev.xany.window);//D
245
246	#ifdef USE_XIM
247	if (xev.type == PropertyNotify
248	&& xev.xany.window == root
249	&& xev.xproperty.atom == xa_xim_servers)
250	im_change_cb ();
251	#endif
252
253	for (int i = xw.size (); i--; )
254	{
255	if (!xw[i])
256	xw.erase_unordered (i);
257	else if (xw[i]->window == xev.xany.window)
258	xw[i]->call (xev);
259	}
260	}
261	while (XPending (display));
262
263	flush ();
264	}
265
266	void rxvt_display::flush ()
267	{
268	for (;;)
269	{
270	if (!XPending (display))
271	break;
272
273	x_cb (x_ev, 0);
274	}
275	}
276
277	void rxvt_display::reg (xevent_watcher *w)
278	{
279	xw.push_back (w);
280	w->active = xw.size ();
281	}
282
283	void rxvt_display::unreg (xevent_watcher *w)
284	{
285	if (w->active)
286	xw[w->active - 1] = 0;
287	}
288
289	void rxvt_display::set_selection_owner (rxvt_term *owner)
290	{
291	if (selection_owner && selection_owner != owner)
292	selection_owner->selection_clear ();
293
294	selection_owner = owner;
295	}
296
297	#ifdef USE_XIM
298	void rxvt_display::reg (im_watcher *w)
299	{
300	imw.push_back (w);
301	}
302
303	void rxvt_display::unreg (im_watcher *w)
304	{
305	imw.erase (find (imw.begin (), imw.end (), w));
306	}
307
308	rxvt_xim rxvt_display::get_xim (const char locale, const char *modifiers)
309	{
310	char *id;
311	int l, m;
312
313	l = strlen (locale);
314	m = strlen (modifiers);
315
316	if (!(id = (char *)malloc (l + m + 2)))
317	return 0;
318
319	memcpy (id, locale, l); id[l] = '\n';
320	memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
321
322	rxvt_xim *xim = xims.get (id);
323
324	free (id);
325
326	return xim;
327	}
328
329	void rxvt_display::put_xim (rxvt_xim *xim)
330	{
331	xims.put (xim);
332	}
333	#endif
334
335	Atom rxvt_display::atom (const char *name)
336	{
337	return XInternAtom (display, name, False);
338	}
339
340	/////////////////////////////////////////////////////////////////////////////
341
342	template class refcache<rxvt_display>;
343	refcache<rxvt_display> displays;
344
345	/////////////////////////////////////////////////////////////////////////////
346
347	bool
348	rxvt_color::set (rxvt_display *display, Pixel p)
349	{
350	#if XFT
351	XColor xc;
352
353	xc.pixel = p;
354	if (!XQueryColor (display->display, display->cmap, &xc))
355	return false;
356
357	XRenderColor d;
358
359	d.red = xc.red;
360	d.green = xc.green;
361	d.blue = xc.blue;
362	d.alpha = 0xffff;
363
364	return
365	XftColorAllocValue (display->display,
366	display->visual,
367	display->cmap,
368	&d, &c);
369	#else
370	this->p = p;
371	#endif
372
373	return true;
374	}
375
376	bool
377	rxvt_color::set (rxvt_display display, const char name)
378	{
379	XColor xc;
380
381	if (XParseColor (display->display, display->cmap, name, &xc))
382	return set (display, xc.red, xc.green, xc.blue);
383
384	return false;
385	}
386
387	bool
388	rxvt_color::set (rxvt_display *display, unsigned short cr, unsigned short cg, unsigned short cb)
389	{
390	XColor xc;
391
392	xc.red = cr;
393	xc.green = cg;
394	xc.blue = cb;
395	xc.flags = DoRed \| DoGreen \| DoBlue;
396
397	if (XAllocColor (display->display, display->cmap, &xc))
398	return set (display, xc.pixel);
399
400	return false;
401	}
402
403	void
404	rxvt_color::get (rxvt_display *display, unsigned short &cr, unsigned short &cg, unsigned short &cb)
405	{
406	#if XFT
407	cr = c.color.red;
408	cg = c.color.green;
409	cb = c.color.blue;
410	#else
411	XColor c;
412
413	c.pixel = p;
414	XQueryColor (display->display, display->cmap, &c);
415
416	cr = c.red;
417	cg = c.green;
418	cb = c.blue;
419	#endif
420	}
421
422	void
423	rxvt_color::free (rxvt_display *display)
424	{
425	#if XFT
426	XftColorFree (display->display, display->visual, display->cmap, &c);
427	#else
428	XFreeColors (display->display, display->cmap, &p, 1, AllPlanes);
429	#endif
430	}
431
432	rxvt_color
433	rxvt_color::fade (rxvt_display *display, int percent)
434	{
435	unsigned short cr, cg, cb;
436	rxvt_color faded;
437
438	get (display, cr, cg, cb);
439	faded.set (display,
440	cr * percent / 100,
441	cg * percent / 100,
442	cb * percent / 100);
443
444	return faded;
445	}
446