rxvt-unicode/src/rxvtcolor.C

#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 = begin (); i < end (); ++i)
    {
      if (!strcmp (id, (*i)->id))
        {
          (*i)->referenced++;
          return *i;
        }
    }

  T *obj = new T (id);

  obj->referenced = 1;

  if (obj && obj->init ())
    {
      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)
    {
      erase (find (begin (), end (), obj));
      delete obj;
    }
}

template<class T>
refcache<T>::~refcache ()
{
  while (size ())
    put (*begin ());
}

/////////////////////////////////////////////////////////////////////////////

static void
im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
{
  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);
}

/////////////////////////////////////////////////////////////////////////////

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_SETFL, FD_CLOEXEC);

  XSelectInput (display, root, PropertyChangeMask);
  xa_xim_servers = XInternAtom (display, "XIM_SERVERS", 0);

  flush ();

  return true;
}

rxvt_display::~rxvt_display ()
{
  x_ev.stop ();

  if (display)
    XCloseDisplay (display);
}

void rxvt_display::im_change_cb ()
{
  for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
    (*i)->call ();
}

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

      if (xev.type == PropertyNotify
          && xev.xany.window == root
          && xev.xproperty.atom == xa_xim_servers)
        im_change_cb ();

      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::reg (im_watcher *w)
{
  imw.push_back (w);
}

void rxvt_display::unreg (im_watcher *w)
{
  imw.erase (find (imw.begin (), imw.end (), w));
}

void rxvt_display::set_selection_owner (rxvt_term *owner)
{
  if (selection_owner && selection_owner != owner)
    selection_owner->selection_clear ();

  selection_owner = owner;
}

rxvt_xim *rxvt_display::get_xim (const char *locale, const char *modifiers)
{
  // asprintf is a GNU and *BSD extension.. sorry...
  char *id;

  if (asprintf (&id, "%s\n%s", locale, modifiers) < 0)
    return 0;

  rxvt_xim *xim = xims.get (id);

  free (id);

  return xim;
}

void rxvt_display::put_xim (rxvt_xim *xim)
{
  xims.put (xim);
}

Atom rxvt_display::atom (const char *name)
{
  return XInternAtom (display, name, False);
}

/////////////////////////////////////////////////////////////////////////////

template 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
}

Revision:	1.11
Committed:	Tue Mar 30 14:45:13 2004 UTC (22 years, 6 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.10:	+5 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	pcg	1.1	#include "../config.h"
2			#include <rxvt.h>
3	pcg	1.4	#include <rxvtcolor.h>
4	pcg	1.1
5	pcg	1.4	#include <unistd.h>
6			#include <fcntl.h>
7	pcg	1.1
8	pcg	1.10	class byteorder byteorder;
9
10			byteorder::byteorder ()
11			{
12			union {
13			uint32_t u;
14			uint8_t b[4];
15			} w;
16
17			w.b[0] = 0x11;
18			w.b[1] = 0x22;
19			w.b[2] = 0x33;
20			w.b[3] = 0x44;
21
22			e = w.u;
23			}
24
25	pcg	1.6	refcounted::refcounted (const char *id)
26			{
27			this->id = STRDUP (id);
28			}
29
30			refcounted::~refcounted ()
31			{
32			free (id);
33			}
34
35			template<class T>
36			T refcache<T>::get (const char id)
37			{
38			for (T **i = begin (); i < end (); ++i)
39			{
40			if (!strcmp (id, (*i)->id))
41			{
42			(*i)->referenced++;
43			return *i;
44			}
45			}
46
47			T *obj = new T (id);
48
49			obj->referenced = 1;
50
51			if (obj && obj->init ())
52			{
53			push_back (obj);
54			return obj;
55			}
56			else
57			{
58			delete obj;
59			return 0;
60			}
61			}
62
63			template<class T>
64			void refcache<T>::put (T *obj)
65			{
66			if (!obj)
67			return;
68
69			if (!--obj->referenced)
70			{
71			erase (find (begin (), end (), obj));
72			delete obj;
73			}
74			}
75
76			template<class T>
77			refcache<T>::~refcache ()
78			{
79			while (size ())
80			put (*begin ());
81			}
82
83	pcg	1.4	/////////////////////////////////////////////////////////////////////////////
84
85	pcg	1.6	static void
86			im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
87			{
88			rxvt_xim xim = (rxvt_xim )client_data;
89			rxvt_display *display = xim->display;
90
91			display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
92
93			display->im_change_cb ();
94			}
95
96			bool rxvt_xim::init ()
97			{
98			display = GET_R->display; //HACK: TODO
99
100			xim = XOpenIM (display->display, NULL, NULL, NULL);
101
102			if (!xim)
103			return false;
104
105			XIMCallback ximcallback;
106			ximcallback.client_data = (XPointer)this;
107			ximcallback.callback = im_destroy_cb;
108
109			XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
110
111			return true;
112			}
113
114			rxvt_xim::~rxvt_xim ()
115	pcg	1.4	{
116	pcg	1.6	if (xim)
117			XCloseIM (xim);
118	pcg	1.4	}
119
120	pcg	1.6	/////////////////////////////////////////////////////////////////////////////
121
122			rxvt_display::rxvt_display (const char *id)
123			: refcounted (id)
124	pcg	1.7	, x_ev (this, &rxvt_display::x_cb)
125	pcg	1.6	, selection_owner (0)
126	pcg	1.4	{
127			}
128
129	pcg	1.6	bool rxvt_display::init ()
130	pcg	1.4	{
131	pcg	1.6	display = XOpenDisplay (id);
132	pcg	1.4
133	pcg	1.9	if (!display)
134			return false;
135
136	pcg	1.4	screen = DefaultScreen (display);
137			root = DefaultRootWindow (display);
138			visual = DefaultVisual (display, screen);
139			cmap = DefaultColormap (display, screen);
140			depth = DefaultDepth (display, screen);
141
142			#ifdef PREFER_24BIT
143			/*
144			* If depth is not 24, look for a 24bit visual.
145			*/
146			if (depth != 24)
147			{
148			XVisualInfo vinfo;
149
150			if (XMatchVisualInfo (display, screen, 24, TrueColor, &vinfo))
151			{
152			depth = 24;
153			visual = vinfo.visual;
154			cmap = XCreateColormap (display,
155			RootWindow (display, screen),
156			visual, AllocNone);
157			}
158			}
159			#endif
160
161			int fd = XConnectionNumber (display);
162	pcg	1.7	x_ev.start (fd, EVENT_READ);
163	pcg	1.4	fcntl (fd, F_SETFL, FD_CLOEXEC);
164
165	pcg	1.6	XSelectInput (display, root, PropertyChangeMask);
166			xa_xim_servers = XInternAtom (display, "XIM_SERVERS", 0);
167
168	pcg	1.7	flush ();
169
170	pcg	1.4	return true;
171			}
172
173	pcg	1.6	rxvt_display::~rxvt_display ()
174	pcg	1.4	{
175	pcg	1.7	x_ev.stop ();
176	pcg	1.4
177	pcg	1.9	if (display)
178			XCloseDisplay (display);
179	pcg	1.4	}
180
181	pcg	1.6	void rxvt_display::im_change_cb ()
182			{
183			for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
184			(*i)->call ();
185			}
186
187	pcg	1.7	void rxvt_display::x_cb (io_watcher &w, short revents)
188	pcg	1.4	{
189			do
190			{
191			XEvent xev;
192			XNextEvent (display, &xev);
193
194	pcg	1.6	//printf ("T %d w %lx\n", xev.type, xev.xany.window);//D
195
196			if (xev.type == PropertyNotify
197			&& xev.xany.window == root
198			&& xev.xproperty.atom == xa_xim_servers)
199			im_change_cb ();
200
201	pcg	1.4	for (int i = xw.size (); i--; )
202			{
203			if (!xw[i])
204			xw.erase_unordered (i);
205			else if (xw[i]->window == xev.xany.window)
206			xw[i]->call (xev);
207			}
208			}
209			while (XPending (display));
210	pcg	1.7
211			flush ();
212			}
213
214			void rxvt_display::flush ()
215			{
216			for (;;)
217			{
218			XFlush (display);
219
220			if (!XPending (display))
221			break;
222
223			x_cb (x_ev, 0);
224			}
225	pcg	1.4	}
226
227			void rxvt_display::reg (xevent_watcher *w)
228			{
229			xw.push_back (w);
230			w->active = xw.size ();
231			}
232
233			void rxvt_display::unreg (xevent_watcher *w)
234			{
235			if (w->active)
236			xw[w->active - 1] = 0;
237			}
238
239	pcg	1.6	void rxvt_display::reg (im_watcher *w)
240			{
241			imw.push_back (w);
242			}
243
244			void rxvt_display::unreg (im_watcher *w)
245			{
246			imw.erase (find (imw.begin (), imw.end (), w));
247			}
248
249	pcg	1.5	void rxvt_display::set_selection_owner (rxvt_term *owner)
250			{
251			if (selection_owner && selection_owner != owner)
252			selection_owner->selection_clear ();
253
254			selection_owner = owner;
255			}
256
257	pcg	1.6	rxvt_xim rxvt_display::get_xim (const char locale, const char *modifiers)
258	pcg	1.4	{
259	pcg	1.6	// asprintf is a GNU and *BSD extension.. sorry...
260			char *id;
261	pcg	1.4
262	pcg	1.6	if (asprintf (&id, "%s\n%s", locale, modifiers) < 0)
263			return 0;
264	pcg	1.4
265	pcg	1.6	rxvt_xim *xim = xims.get (id);
266	pcg	1.4
267	pcg	1.6	free (id);
268	pcg	1.4
269	pcg	1.6	return xim;
270	pcg	1.4	}
271
272	pcg	1.6	void rxvt_display::put_xim (rxvt_xim *xim)
273	pcg	1.4	{
274	pcg	1.6	xims.put (xim);
275	pcg	1.4	}
276
277	pcg	1.11	Atom rxvt_display::atom (const char *name)
278			{
279			return XInternAtom (display, name, False);
280			}
281
282	pcg	1.4	/////////////////////////////////////////////////////////////////////////////
283	pcg	1.6
284			template refcache<rxvt_display>;
285			refcache<rxvt_display> displays;
286
287			/////////////////////////////////////////////////////////////////////////////
288	pcg	1.4
289	pcg	1.1	bool
290	pcg	1.4	rxvt_color::set (rxvt_display *display, Pixel p)
291	pcg	1.1	{
292			#if XFT
293			XColor xc;
294
295			xc.pixel = p;
296	pcg	1.4	if (!XQueryColor (display->display, display->cmap, &xc))
297	pcg	1.1	return false;
298
299			XRenderColor d;
300
301			d.red = xc.red;
302			d.green = xc.green;
303			d.blue = xc.blue;
304			d.alpha = 0xffff;
305
306			return
307	pcg	1.4	XftColorAllocValue (display->display,
308			display->visual,
309			display->cmap,
310			&d, &c);
311	pcg	1.1	#else
312			this->p = p;
313			#endif
314
315			return true;
316			}
317
318			bool
319	pcg	1.4	rxvt_color::set (rxvt_display display, const char name)
320	pcg	1.1	{
321			XColor xc;
322
323	pcg	1.4	if (XParseColor (display->display, display->cmap, name, &xc))
324			return set (display, xc.red, xc.green, xc.blue);
325	pcg	1.1
326			return false;
327			}
328
329			bool
330	pcg	1.4	rxvt_color::set (rxvt_display *display, unsigned short cr, unsigned short cg, unsigned short cb)
331	pcg	1.1	{
332			XColor xc;
333
334			xc.red = cr;
335			xc.green = cg;
336			xc.blue = cb;
337			xc.flags = DoRed \| DoGreen \| DoBlue;
338
339	pcg	1.4	if (XAllocColor (display->display, display->cmap, &xc))
340			return set (display, xc.pixel);
341	pcg	1.1
342			return false;
343			}
344
345			void
346	pcg	1.4	rxvt_color::get (rxvt_display *display, unsigned short &cr, unsigned short &cg, unsigned short &cb)
347	pcg	1.1	{
348			#if XFT
349			cr = c.color.red;
350			cg = c.color.green;
351			cb = c.color.blue;
352			#else
353			XColor c;
354
355			c.pixel = p;
356	pcg	1.4	XQueryColor (display->display, display->cmap, &c);
357	pcg	1.1
358			cr = c.red;
359			cg = c.green;
360			cb = c.blue;
361			#endif
362			}
363
364	pcg	1.4	void
365			rxvt_color::free (rxvt_display *display)
366			{
367			#if XFT
368			XftColorFree (display->display, display->visual, display->cmap, &c);
369			#else
370	pcg	1.8	XFreeColors (display->display, display->cmap, &p, 1, AllPlanes);
371	pcg	1.4	#endif
372			}
373