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 (;;)
    {
      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:	1.21
Committed:	Mon Aug 2 04:53:34 2004 UTC (19 years, 9 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.20:	+0 -2 lines
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	pcg	1.10	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	pcg	1.6	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	root	1.15	for (T **i = this->begin (); i < this->end (); ++i)
61	pcg	1.6	{
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	root	1.15	this->push_back (obj);
76	pcg	1.6	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	root	1.15	this->erase (find (this->begin (), this->end (), obj));
94	pcg	1.6	delete obj;
95			}
96			}
97
98			template<class T>
99			refcache<T>::~refcache ()
100			{
101	root	1.15	while (this->size ())
102			put (*this->begin ());
103	pcg	1.6	}
104
105	pcg	1.4	/////////////////////////////////////////////////////////////////////////////
106
107	root	1.16	#ifdef USE_XIM
108	pcg	1.6	static void
109	root	1.20	#if XIMCB_PROTO_BROKEN
110			im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3)
111			#else
112	pcg	1.6	im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
113	root	1.20	#endif
114	pcg	1.6	{
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	root	1.18	XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
137	pcg	1.6
138			return true;
139			}
140
141			rxvt_xim::~rxvt_xim ()
142	pcg	1.4	{
143	pcg	1.6	if (xim)
144			XCloseIM (xim);
145	pcg	1.4	}
146	root	1.16	#endif
147	pcg	1.4
148	pcg	1.6	/////////////////////////////////////////////////////////////////////////////
149
150			rxvt_display::rxvt_display (const char *id)
151			: refcounted (id)
152	pcg	1.7	, x_ev (this, &rxvt_display::x_cb)
153	pcg	1.6	, selection_owner (0)
154	pcg	1.4	{
155			}
156
157	pcg	1.6	bool rxvt_display::init ()
158	pcg	1.4	{
159	pcg	1.6	display = XOpenDisplay (id);
160	pcg	1.4
161	pcg	1.9	if (!display)
162			return false;
163
164	pcg	1.4	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	pcg	1.7	x_ev.start (fd, EVENT_READ);
191	pcg	1.13	fcntl (fd, F_SETFD, FD_CLOEXEC);
192	pcg	1.4
193	pcg	1.6	XSelectInput (display, root, PropertyChangeMask);
194	root	1.16	#ifdef USE_XIM
195	pcg	1.6	xa_xim_servers = XInternAtom (display, "XIM_SERVERS", 0);
196	root	1.16	#endif
197	pcg	1.6
198	pcg	1.7	flush ();
199
200	pcg	1.4	return true;
201			}
202
203	pcg	1.6	rxvt_display::~rxvt_display ()
204	pcg	1.4	{
205	pcg	1.7	x_ev.stop ();
206	pcg	1.4
207	pcg	1.9	if (display)
208			XCloseDisplay (display);
209	pcg	1.4	}
210
211	root	1.16	#ifdef USE_XIM
212	pcg	1.6	void rxvt_display::im_change_cb ()
213			{
214			for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
215			(*i)->call ();
216			}
217	root	1.16	#endif
218	pcg	1.6
219	pcg	1.7	void rxvt_display::x_cb (io_watcher &w, short revents)
220	pcg	1.4	{
221			do
222			{
223			XEvent xev;
224			XNextEvent (display, &xev);
225
226	pcg	1.6	//printf ("T %d w %lx\n", xev.type, xev.xany.window);//D
227
228	root	1.16	#ifdef USE_XIM
229	pcg	1.6	if (xev.type == PropertyNotify
230			&& xev.xany.window == root
231			&& xev.xproperty.atom == xa_xim_servers)
232			im_change_cb ();
233	root	1.16	#endif
234	pcg	1.6
235	pcg	1.4	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	pcg	1.7
245			flush ();
246			}
247
248			void rxvt_display::flush ()
249			{
250			for (;;)
251			{
252			if (!XPending (display))
253			break;
254
255			x_cb (x_ev, 0);
256			}
257	pcg	1.4	}
258
259			void rxvt_display::reg (xevent_watcher *w)
260			{
261			xw.push_back (w);
262			w->active = xw.size ();
263			}
264
265			void rxvt_display::unreg (xevent_watcher *w)
266			{
267			if (w->active)
268			xw[w->active - 1] = 0;
269			}
270
271	root	1.16	void rxvt_display::set_selection_owner (rxvt_term *owner)
272			{
273			if (selection_owner && selection_owner != owner)
274			selection_owner->selection_clear ();
275
276			selection_owner = owner;
277			}
278
279			#ifdef USE_XIM
280	pcg	1.6	void rxvt_display::reg (im_watcher *w)
281			{
282			imw.push_back (w);
283			}
284
285			void rxvt_display::unreg (im_watcher *w)
286			{
287			imw.erase (find (imw.begin (), imw.end (), w));
288			}
289
290			rxvt_xim rxvt_display::get_xim (const char locale, const char *modifiers)
291	pcg	1.4	{
292	pcg	1.6	char *id;
293	pcg	1.12	int l, m;
294	pcg	1.4
295	pcg	1.12	l = strlen (locale);
296			m = strlen (modifiers);
297
298			if (!(id = (char *)malloc (l + m + 2)))
299	pcg	1.6	return 0;
300	pcg	1.4
301	pcg	1.12	memcpy (id, locale, l); id[l] = '\n';
302			memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
303
304	pcg	1.6	rxvt_xim *xim = xims.get (id);
305	pcg	1.4
306	pcg	1.6	free (id);
307	pcg	1.4
308	pcg	1.6	return xim;
309	pcg	1.4	}
310
311	pcg	1.6	void rxvt_display::put_xim (rxvt_xim *xim)
312	pcg	1.4	{
313	pcg	1.6	xims.put (xim);
314	pcg	1.4	}
315	root	1.16	#endif
316	pcg	1.4
317	pcg	1.11	Atom rxvt_display::atom (const char *name)
318			{
319			return XInternAtom (display, name, False);
320			}
321
322	pcg	1.4	/////////////////////////////////////////////////////////////////////////////
323	pcg	1.6
324	root	1.15	template class refcache<rxvt_display>;
325	pcg	1.6	refcache<rxvt_display> displays;
326
327			/////////////////////////////////////////////////////////////////////////////
328	pcg	1.4
329	pcg	1.1	bool
330	pcg	1.4	rxvt_color::set (rxvt_display *display, Pixel p)
331	pcg	1.1	{
332			#if XFT
333			XColor xc;
334
335			xc.pixel = p;
336	pcg	1.4	if (!XQueryColor (display->display, display->cmap, &xc))
337	pcg	1.1	return false;
338
339			XRenderColor d;
340
341			d.red = xc.red;
342			d.green = xc.green;
343			d.blue = xc.blue;
344			d.alpha = 0xffff;
345
346			return
347	pcg	1.4	XftColorAllocValue (display->display,
348			display->visual,
349			display->cmap,
350			&d, &c);
351	pcg	1.1	#else
352			this->p = p;
353			#endif
354
355			return true;
356			}
357
358			bool
359	pcg	1.4	rxvt_color::set (rxvt_display display, const char name)
360	pcg	1.1	{
361			XColor xc;
362
363	pcg	1.4	if (XParseColor (display->display, display->cmap, name, &xc))
364			return set (display, xc.red, xc.green, xc.blue);
365	pcg	1.1
366			return false;
367			}
368
369			bool
370	pcg	1.4	rxvt_color::set (rxvt_display *display, unsigned short cr, unsigned short cg, unsigned short cb)
371	pcg	1.1	{
372			XColor xc;
373
374			xc.red = cr;
375			xc.green = cg;
376			xc.blue = cb;
377			xc.flags = DoRed \| DoGreen \| DoBlue;
378
379	pcg	1.4	if (XAllocColor (display->display, display->cmap, &xc))
380			return set (display, xc.pixel);
381	pcg	1.1
382			return false;
383			}
384
385			void
386	pcg	1.4	rxvt_color::get (rxvt_display *display, unsigned short &cr, unsigned short &cg, unsigned short &cb)
387	pcg	1.1	{
388			#if XFT
389			cr = c.color.red;
390			cg = c.color.green;
391			cb = c.color.blue;
392			#else
393			XColor c;
394
395			c.pixel = p;
396	pcg	1.4	XQueryColor (display->display, display->cmap, &c);
397	pcg	1.1
398			cr = c.red;
399			cg = c.green;
400			cb = c.blue;
401			#endif
402			}
403
404	pcg	1.4	void
405			rxvt_color::free (rxvt_display *display)
406			{
407			#if XFT
408			XftColorFree (display->display, display->visual, display->cmap, &c);
409			#else
410	pcg	1.8	XFreeColors (display->display, display->cmap, &p, 1, AllPlanes);
411	pcg	1.4	#endif
412			}
413
414	root	1.19	rxvt_color
415			rxvt_color::fade (rxvt_display *display, int percent)
416			{
417			unsigned short cr, cg, cb;
418			rxvt_color faded;
419
420			get (display, cr, cg, cb);
421			faded.set (display,
422			cr * percent / 100,
423			cg * percent / 100,
424			cb * percent / 100);
425
426			return faded;
427			}
428