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 *
#	User	Rev	Content
1	pcg	1.14	/---------------------------------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	pcg	1.1	#include "../config.h"
24			#include <rxvt.h>
25	pcg	1.4	#include <rxvtcolor.h>
26	pcg	1.1
27	pcg	1.4	#include <unistd.h>
28			#include <fcntl.h>
29	pcg	1.1
30	root	1.22	#ifndef NO_SLOW_LINK_SUPPORT
31			# include <sys/socket.h>
32			# include <sys/un.h>
33			#endif
34
35	pcg	1.10	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	pcg	1.6	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	root	1.15	for (T **i = this->begin (); i < this->end (); ++i)
66	pcg	1.6	{
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	root	1.15	this->push_back (obj);
81	pcg	1.6	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	root	1.15	this->erase (find (this->begin (), this->end (), obj));
99	pcg	1.6	delete obj;
100			}
101			}
102
103			template<class T>
104			refcache<T>::~refcache ()
105			{
106	root	1.15	while (this->size ())
107			put (*this->begin ());
108	pcg	1.6	}
109
110	pcg	1.4	/////////////////////////////////////////////////////////////////////////////
111
112	root	1.16	#ifdef USE_XIM
113	pcg	1.6	static void
114	root	1.20	#if XIMCB_PROTO_BROKEN
115			im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3)
116			#else
117	pcg	1.6	im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
118	root	1.20	#endif
119	pcg	1.6	{
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	root	1.18	XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
142	pcg	1.6
143			return true;
144			}
145
146			rxvt_xim::~rxvt_xim ()
147	pcg	1.4	{
148	pcg	1.6	if (xim)
149			XCloseIM (xim);
150	pcg	1.4	}
151	root	1.16	#endif
152	pcg	1.4
153	pcg	1.6	/////////////////////////////////////////////////////////////////////////////
154
155			rxvt_display::rxvt_display (const char *id)
156			: refcounted (id)
157	pcg	1.7	, x_ev (this, &rxvt_display::x_cb)
158	pcg	1.6	, selection_owner (0)
159	pcg	1.4	{
160			}
161
162	pcg	1.6	bool rxvt_display::init ()
163	pcg	1.4	{
164	pcg	1.6	display = XOpenDisplay (id);
165	pcg	1.4
166	pcg	1.9	if (!display)
167			return false;
168
169	pcg	1.4	screen = DefaultScreen (display);
170			root = DefaultRootWindow (display);
171			visual = DefaultVisual (display, screen);
172			cmap = DefaultColormap (display, screen);
173			depth = DefaultDepth (display, screen);
174
175	root	1.22	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	pcg	1.4	#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	pcg	1.7	x_ev.start (fd, EVENT_READ);
209	pcg	1.13	fcntl (fd, F_SETFD, FD_CLOEXEC);
210	pcg	1.4
211	pcg	1.6	XSelectInput (display, root, PropertyChangeMask);
212	root	1.16	#ifdef USE_XIM
213	pcg	1.6	xa_xim_servers = XInternAtom (display, "XIM_SERVERS", 0);
214	root	1.16	#endif
215	pcg	1.6
216	pcg	1.7	flush ();
217
218	pcg	1.4	return true;
219			}
220
221	pcg	1.6	rxvt_display::~rxvt_display ()
222	pcg	1.4	{
223	pcg	1.7	x_ev.stop ();
224	pcg	1.4
225	pcg	1.9	if (display)
226			XCloseDisplay (display);
227	pcg	1.4	}
228
229	root	1.16	#ifdef USE_XIM
230	pcg	1.6	void rxvt_display::im_change_cb ()
231			{
232			for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
233			(*i)->call ();
234			}
235	root	1.16	#endif
236	pcg	1.6
237	pcg	1.7	void rxvt_display::x_cb (io_watcher &w, short revents)
238	pcg	1.4	{
239			do
240			{
241			XEvent xev;
242			XNextEvent (display, &xev);
243
244	pcg	1.6	//printf ("T %d w %lx\n", xev.type, xev.xany.window);//D
245
246	root	1.16	#ifdef USE_XIM
247	pcg	1.6	if (xev.type == PropertyNotify
248			&& xev.xany.window == root
249			&& xev.xproperty.atom == xa_xim_servers)
250			im_change_cb ();
251	root	1.16	#endif
252	pcg	1.6
253	pcg	1.4	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	pcg	1.7
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	pcg	1.4	}
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	root	1.16	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	pcg	1.6	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	pcg	1.4	{
310	pcg	1.6	char *id;
311	pcg	1.12	int l, m;
312	pcg	1.4
313	pcg	1.12	l = strlen (locale);
314			m = strlen (modifiers);
315
316			if (!(id = (char *)malloc (l + m + 2)))
317	pcg	1.6	return 0;
318	pcg	1.4
319	pcg	1.12	memcpy (id, locale, l); id[l] = '\n';
320			memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
321
322	pcg	1.6	rxvt_xim *xim = xims.get (id);
323	pcg	1.4
324	pcg	1.6	free (id);
325	pcg	1.4
326	pcg	1.6	return xim;
327	pcg	1.4	}
328
329	pcg	1.6	void rxvt_display::put_xim (rxvt_xim *xim)
330	pcg	1.4	{
331	pcg	1.6	xims.put (xim);
332	pcg	1.4	}
333	root	1.16	#endif
334	pcg	1.4
335	pcg	1.11	Atom rxvt_display::atom (const char *name)
336			{
337			return XInternAtom (display, name, False);
338			}
339
340	pcg	1.4	/////////////////////////////////////////////////////////////////////////////
341	pcg	1.6
342	root	1.15	template class refcache<rxvt_display>;
343	pcg	1.6	refcache<rxvt_display> displays;
344
345			/////////////////////////////////////////////////////////////////////////////
346	pcg	1.4
347	pcg	1.1	bool
348	pcg	1.4	rxvt_color::set (rxvt_display *display, Pixel p)
349	pcg	1.1	{
350			#if XFT
351			XColor xc;
352
353			xc.pixel = p;
354	pcg	1.4	if (!XQueryColor (display->display, display->cmap, &xc))
355	pcg	1.1	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	pcg	1.4	XftColorAllocValue (display->display,
366			display->visual,
367			display->cmap,
368			&d, &c);
369	pcg	1.1	#else
370			this->p = p;
371			#endif
372
373			return true;
374			}
375
376			bool
377	pcg	1.4	rxvt_color::set (rxvt_display display, const char name)
378	pcg	1.1	{
379			XColor xc;
380
381	pcg	1.4	if (XParseColor (display->display, display->cmap, name, &xc))
382			return set (display, xc.red, xc.green, xc.blue);
383	pcg	1.1
384			return false;
385			}
386
387			bool
388	pcg	1.4	rxvt_color::set (rxvt_display *display, unsigned short cr, unsigned short cg, unsigned short cb)
389	pcg	1.1	{
390			XColor xc;
391
392			xc.red = cr;
393			xc.green = cg;
394			xc.blue = cb;
395			xc.flags = DoRed \| DoGreen \| DoBlue;
396
397	pcg	1.4	if (XAllocColor (display->display, display->cmap, &xc))
398			return set (display, xc.pixel);
399	pcg	1.1
400			return false;
401			}
402
403			void
404	pcg	1.4	rxvt_color::get (rxvt_display *display, unsigned short &cr, unsigned short &cg, unsigned short &cb)
405	pcg	1.1	{
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	pcg	1.4	XQueryColor (display->display, display->cmap, &c);
415	pcg	1.1
416			cr = c.red;
417			cg = c.green;
418			cb = c.blue;
419			#endif
420			}
421
422	pcg	1.4	void
423			rxvt_color::free (rxvt_display *display)
424			{
425			#if XFT
426			XftColorFree (display->display, display->visual, display->cmap, &c);
427			#else
428	pcg	1.8	XFreeColors (display->display, display->cmap, &p, 1, AllPlanes);
429	pcg	1.4	#endif
430			}
431
432	root	1.19	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