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>

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);

#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

  int fd = XConnectionNumber (display);
  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 (;;)
    {
      XFlush (display);

      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:	1.20
Committed:	Fri Jul 30 16:04:05 2004 UTC (19 years, 9 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_3
Changes since 1.19:	+4 -0 lines
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	class byteorder byteorder;
31
32	byteorder::byteorder ()
33	{
34	union {
35	uint32_t u;
36	uint8_t b[4];
37	} w;
38
39	w.b[0] = 0x11;
40	w.b[1] = 0x22;
41	w.b[2] = 0x33;
42	w.b[3] = 0x44;
43
44	e = w.u;
45	}
46
47	refcounted::refcounted (const char *id)
48	{
49	this->id = STRDUP (id);
50	}
51
52	refcounted::~refcounted ()
53	{
54	free (id);
55	}
56
57	template<class T>
58	T refcache<T>::get (const char id)
59	{
60	for (T **i = this->begin (); i < this->end (); ++i)
61	{
62	if (!strcmp (id, (*i)->id))
63	{
64	(*i)->referenced++;
65	return *i;
66	}
67	}
68
69	T *obj = new T (id);
70
71	obj->referenced = 1;
72
73	if (obj && obj->init ())
74	{
75	this->push_back (obj);
76	return obj;
77	}
78	else
79	{
80	delete obj;
81	return 0;
82	}
83	}
84
85	template<class T>
86	void refcache<T>::put (T *obj)
87	{
88	if (!obj)
89	return;
90
91	if (!--obj->referenced)
92	{
93	this->erase (find (this->begin (), this->end (), obj));
94	delete obj;
95	}
96	}
97
98	template<class T>
99	refcache<T>::~refcache ()
100	{
101	while (this->size ())
102	put (*this->begin ());
103	}
104
105	/////////////////////////////////////////////////////////////////////////////
106
107	#ifdef USE_XIM
108	static void
109	#if XIMCB_PROTO_BROKEN
110	im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3)
111	#else
112	im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
113	#endif
114	{
115	rxvt_xim xim = (rxvt_xim )client_data;
116	rxvt_display *display = xim->display;
117
118	display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
119
120	display->im_change_cb ();
121	}
122
123	bool rxvt_xim::init ()
124	{
125	display = GET_R->display; //HACK: TODO
126
127	xim = XOpenIM (display->display, NULL, NULL, NULL);
128
129	if (!xim)
130	return false;
131
132	XIMCallback ximcallback;
133	ximcallback.client_data = (XPointer)this;
134	ximcallback.callback = im_destroy_cb;
135
136	XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
137
138	return true;
139	}
140
141	rxvt_xim::~rxvt_xim ()
142	{
143	if (xim)
144	XCloseIM (xim);
145	}
146	#endif
147
148	/////////////////////////////////////////////////////////////////////////////
149
150	rxvt_display::rxvt_display (const char *id)
151	: refcounted (id)
152	, x_ev (this, &rxvt_display::x_cb)
153	, selection_owner (0)
154	{
155	}
156
157	bool rxvt_display::init ()
158	{
159	display = XOpenDisplay (id);
160
161	if (!display)
162	return false;
163
164	screen = DefaultScreen (display);
165	root = DefaultRootWindow (display);
166	visual = DefaultVisual (display, screen);
167	cmap = DefaultColormap (display, screen);
168	depth = DefaultDepth (display, screen);
169
170	#ifdef PREFER_24BIT
171	/*
172	* If depth is not 24, look for a 24bit visual.
173	*/
174	if (depth != 24)
175	{
176	XVisualInfo vinfo;
177
178	if (XMatchVisualInfo (display, screen, 24, TrueColor, &vinfo))
179	{
180	depth = 24;
181	visual = vinfo.visual;
182	cmap = XCreateColormap (display,
183	RootWindow (display, screen),
184	visual, AllocNone);
185	}
186	}
187	#endif
188
189	int fd = XConnectionNumber (display);
190	x_ev.start (fd, EVENT_READ);
191	fcntl (fd, F_SETFD, FD_CLOEXEC);
192
193	XSelectInput (display, root, PropertyChangeMask);
194	#ifdef USE_XIM
195	xa_xim_servers = XInternAtom (display, "XIM_SERVERS", 0);
196	#endif
197
198	flush ();
199
200	return true;
201	}
202
203	rxvt_display::~rxvt_display ()
204	{
205	x_ev.stop ();
206
207	if (display)
208	XCloseDisplay (display);
209	}
210
211	#ifdef USE_XIM
212	void rxvt_display::im_change_cb ()
213	{
214	for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
215	(*i)->call ();
216	}
217	#endif
218
219	void rxvt_display::x_cb (io_watcher &w, short revents)
220	{
221	do
222	{
223	XEvent xev;
224	XNextEvent (display, &xev);
225
226	//printf ("T %d w %lx\n", xev.type, xev.xany.window);//D
227
228	#ifdef USE_XIM
229	if (xev.type == PropertyNotify
230	&& xev.xany.window == root
231	&& xev.xproperty.atom == xa_xim_servers)
232	im_change_cb ();
233	#endif
234
235	for (int i = xw.size (); i--; )
236	{
237	if (!xw[i])
238	xw.erase_unordered (i);
239	else if (xw[i]->window == xev.xany.window)
240	xw[i]->call (xev);
241	}
242	}
243	while (XPending (display));
244
245	flush ();
246	}
247
248	void rxvt_display::flush ()
249	{
250	for (;;)
251	{
252	XFlush (display);
253
254	if (!XPending (display))
255	break;
256
257	x_cb (x_ev, 0);
258	}
259	}
260
261	void rxvt_display::reg (xevent_watcher *w)
262	{
263	xw.push_back (w);
264	w->active = xw.size ();
265	}
266
267	void rxvt_display::unreg (xevent_watcher *w)
268	{
269	if (w->active)
270	xw[w->active - 1] = 0;
271	}
272
273	void rxvt_display::set_selection_owner (rxvt_term *owner)
274	{
275	if (selection_owner && selection_owner != owner)
276	selection_owner->selection_clear ();
277
278	selection_owner = owner;
279	}
280
281	#ifdef USE_XIM
282	void rxvt_display::reg (im_watcher *w)
283	{
284	imw.push_back (w);
285	}
286
287	void rxvt_display::unreg (im_watcher *w)
288	{
289	imw.erase (find (imw.begin (), imw.end (), w));
290	}
291
292	rxvt_xim rxvt_display::get_xim (const char locale, const char *modifiers)
293	{
294	char *id;
295	int l, m;
296
297	l = strlen (locale);
298	m = strlen (modifiers);
299
300	if (!(id = (char *)malloc (l + m + 2)))
301	return 0;
302
303	memcpy (id, locale, l); id[l] = '\n';
304	memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
305
306	rxvt_xim *xim = xims.get (id);
307
308	free (id);
309
310	return xim;
311	}
312
313	void rxvt_display::put_xim (rxvt_xim *xim)
314	{
315	xims.put (xim);
316	}
317	#endif
318
319	Atom rxvt_display::atom (const char *name)
320	{
321	return XInternAtom (display, name, False);
322	}
323
324	/////////////////////////////////////////////////////////////////////////////
325
326	template class refcache<rxvt_display>;
327	refcache<rxvt_display> displays;
328
329	/////////////////////////////////////////////////////////////////////////////
330
331	bool
332	rxvt_color::set (rxvt_display *display, Pixel p)
333	{
334	#if XFT
335	XColor xc;
336
337	xc.pixel = p;
338	if (!XQueryColor (display->display, display->cmap, &xc))
339	return false;
340
341	XRenderColor d;
342
343	d.red = xc.red;
344	d.green = xc.green;
345	d.blue = xc.blue;
346	d.alpha = 0xffff;
347
348	return
349	XftColorAllocValue (display->display,
350	display->visual,
351	display->cmap,
352	&d, &c);
353	#else
354	this->p = p;
355	#endif
356
357	return true;
358	}
359
360	bool
361	rxvt_color::set (rxvt_display display, const char name)
362	{
363	XColor xc;
364
365	if (XParseColor (display->display, display->cmap, name, &xc))
366	return set (display, xc.red, xc.green, xc.blue);
367
368	return false;
369	}
370
371	bool
372	rxvt_color::set (rxvt_display *display, unsigned short cr, unsigned short cg, unsigned short cb)
373	{
374	XColor xc;
375
376	xc.red = cr;
377	xc.green = cg;
378	xc.blue = cb;
379	xc.flags = DoRed \| DoGreen \| DoBlue;
380
381	if (XAllocColor (display->display, display->cmap, &xc))
382	return set (display, xc.pixel);
383
384	return false;
385	}
386
387	void
388	rxvt_color::get (rxvt_display *display, unsigned short &cr, unsigned short &cg, unsigned short &cb)
389	{
390	#if XFT
391	cr = c.color.red;
392	cg = c.color.green;
393	cb = c.color.blue;
394	#else
395	XColor c;
396
397	c.pixel = p;
398	XQueryColor (display->display, display->cmap, &c);
399
400	cr = c.red;
401	cg = c.green;
402	cb = c.blue;
403	#endif
404	}
405
406	void
407	rxvt_color::free (rxvt_display *display)
408	{
409	#if XFT
410	XftColorFree (display->display, display->visual, display->cmap, &c);
411	#else
412	XFreeColors (display->display, display->cmap, &p, 1, AllPlanes);
413	#endif
414	}
415
416	rxvt_color
417	rxvt_color::fade (rxvt_display *display, int percent)
418	{
419	unsigned short cr, cg, cb;
420	rxvt_color faded;
421
422	get (display, cr, cg, cb);
423	faded.set (display,
424	cr * percent / 100,
425	cg * percent / 100,
426	cb * percent / 100);
427
428	return faded;
429	}
430