rxvt-unicode/src/rxvtcolor.C

#include "../config.h"
#include <rxvt.h>
#include <rxvtcolor.h>

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

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_watcher (this, &rxvt_display::x_event)
, selection_owner (0)
{
}

bool rxvt_display::init ()
{
  display = XOpenDisplay (id);

  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_watcher.start (fd, EVENT_READ);
  fcntl (fd, F_SETFL, FD_CLOEXEC);

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

  return true;
}

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

  XCloseDisplay (display);
}

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

void rxvt_display::x_event (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));
}

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);
}

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

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, &c, 1, AllPlanes);
#endif
}

Revision:	1.6
Committed:	Wed Feb 11 08:13:45 2004 UTC (20 years, 4 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.5:	+140 -39 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	1.6	refcounted::refcounted (const char *id)
9			{
10			this->id = STRDUP (id);
11			}
12
13			refcounted::~refcounted ()
14			{
15			free (id);
16			}
17
18			template<class T>
19			T refcache<T>::get (const char id)
20			{
21			for (T **i = begin (); i < end (); ++i)
22			{
23			if (!strcmp (id, (*i)->id))
24			{
25			(*i)->referenced++;
26			return *i;
27			}
28			}
29
30			T *obj = new T (id);
31
32			obj->referenced = 1;
33
34			if (obj && obj->init ())
35			{
36			push_back (obj);
37			return obj;
38			}
39			else
40			{
41			delete obj;
42			return 0;
43			}
44			}
45
46			template<class T>
47			void refcache<T>::put (T *obj)
48			{
49			if (!obj)
50			return;
51
52			if (!--obj->referenced)
53			{
54			erase (find (begin (), end (), obj));
55			delete obj;
56			}
57			}
58
59			template<class T>
60			refcache<T>::~refcache ()
61			{
62			while (size ())
63			put (*begin ());
64			}
65
66	pcg	1.4	/////////////////////////////////////////////////////////////////////////////
67
68	pcg	1.6	static void
69			im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
70			{
71			rxvt_xim xim = (rxvt_xim )client_data;
72			rxvt_display *display = xim->display;
73
74			display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
75
76			display->im_change_cb ();
77			}
78
79			bool rxvt_xim::init ()
80			{
81			display = GET_R->display; //HACK: TODO
82
83			xim = XOpenIM (display->display, NULL, NULL, NULL);
84
85			if (!xim)
86			return false;
87
88			XIMCallback ximcallback;
89			ximcallback.client_data = (XPointer)this;
90			ximcallback.callback = im_destroy_cb;
91
92			XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
93
94			return true;
95			}
96
97			rxvt_xim::~rxvt_xim ()
98	pcg	1.4	{
99	pcg	1.6	if (xim)
100			XCloseIM (xim);
101	pcg	1.4	}
102
103	pcg	1.6	/////////////////////////////////////////////////////////////////////////////
104
105			rxvt_display::rxvt_display (const char *id)
106			: refcounted (id)
107			, x_watcher (this, &rxvt_display::x_event)
108			, selection_owner (0)
109	pcg	1.4	{
110			}
111
112	pcg	1.6	bool rxvt_display::init ()
113	pcg	1.4	{
114	pcg	1.6	display = XOpenDisplay (id);
115	pcg	1.4
116			screen = DefaultScreen (display);
117			root = DefaultRootWindow (display);
118			visual = DefaultVisual (display, screen);
119			cmap = DefaultColormap (display, screen);
120			depth = DefaultDepth (display, screen);
121
122			#ifdef PREFER_24BIT
123			/*
124			* If depth is not 24, look for a 24bit visual.
125			*/
126			if (depth != 24)
127			{
128			XVisualInfo vinfo;
129
130			if (XMatchVisualInfo (display, screen, 24, TrueColor, &vinfo))
131			{
132			depth = 24;
133			visual = vinfo.visual;
134			cmap = XCreateColormap (display,
135			RootWindow (display, screen),
136			visual, AllocNone);
137			}
138			}
139			#endif
140
141			int fd = XConnectionNumber (display);
142			x_watcher.start (fd, EVENT_READ);
143			fcntl (fd, F_SETFL, FD_CLOEXEC);
144
145	pcg	1.6	XSelectInput (display, root, PropertyChangeMask);
146			xa_xim_servers = XInternAtom (display, "XIM_SERVERS", 0);
147
148	pcg	1.4	return true;
149			}
150
151	pcg	1.6	rxvt_display::~rxvt_display ()
152	pcg	1.4	{
153			x_watcher.stop ();
154
155			XCloseDisplay (display);
156			}
157
158	pcg	1.6	void rxvt_display::im_change_cb ()
159			{
160			for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
161			(*i)->call ();
162			}
163
164	pcg	1.4	void rxvt_display::x_event (io_watcher &w, short revents)
165			{
166			do
167			{
168			XEvent xev;
169			XNextEvent (display, &xev);
170
171	pcg	1.6	//printf ("T %d w %lx\n", xev.type, xev.xany.window);//D
172
173			if (xev.type == PropertyNotify
174			&& xev.xany.window == root
175			&& xev.xproperty.atom == xa_xim_servers)
176			im_change_cb ();
177
178	pcg	1.4	for (int i = xw.size (); i--; )
179			{
180			if (!xw[i])
181			xw.erase_unordered (i);
182			else if (xw[i]->window == xev.xany.window)
183			xw[i]->call (xev);
184			}
185			}
186			while (XPending (display));
187			}
188
189			void rxvt_display::reg (xevent_watcher *w)
190			{
191			xw.push_back (w);
192			w->active = xw.size ();
193			}
194
195			void rxvt_display::unreg (xevent_watcher *w)
196			{
197			if (w->active)
198			xw[w->active - 1] = 0;
199			}
200
201	pcg	1.6	void rxvt_display::reg (im_watcher *w)
202			{
203			imw.push_back (w);
204			}
205
206			void rxvt_display::unreg (im_watcher *w)
207			{
208			imw.erase (find (imw.begin (), imw.end (), w));
209			}
210
211	pcg	1.5	void rxvt_display::set_selection_owner (rxvt_term *owner)
212			{
213			if (selection_owner && selection_owner != owner)
214			selection_owner->selection_clear ();
215
216			selection_owner = owner;
217			}
218
219	pcg	1.6	rxvt_xim rxvt_display::get_xim (const char locale, const char *modifiers)
220	pcg	1.4	{
221	pcg	1.6	// asprintf is a GNU and *BSD extension.. sorry...
222			char *id;
223	pcg	1.4
224	pcg	1.6	if (asprintf (&id, "%s\n%s", locale, modifiers) < 0)
225			return 0;
226	pcg	1.4
227	pcg	1.6	rxvt_xim *xim = xims.get (id);
228	pcg	1.4
229	pcg	1.6	free (id);
230	pcg	1.4
231	pcg	1.6	return xim;
232	pcg	1.4	}
233
234	pcg	1.6	void rxvt_display::put_xim (rxvt_xim *xim)
235	pcg	1.4	{
236	pcg	1.6	xims.put (xim);
237	pcg	1.4	}
238
239			/////////////////////////////////////////////////////////////////////////////
240	pcg	1.6
241			template refcache<rxvt_display>;
242			refcache<rxvt_display> displays;
243
244			/////////////////////////////////////////////////////////////////////////////
245	pcg	1.4
246	pcg	1.1	bool
247	pcg	1.4	rxvt_color::set (rxvt_display *display, Pixel p)
248	pcg	1.1	{
249			#if XFT
250			XColor xc;
251
252			xc.pixel = p;
253	pcg	1.4	if (!XQueryColor (display->display, display->cmap, &xc))
254	pcg	1.1	return false;
255
256			XRenderColor d;
257
258			d.red = xc.red;
259			d.green = xc.green;
260			d.blue = xc.blue;
261			d.alpha = 0xffff;
262
263			return
264	pcg	1.4	XftColorAllocValue (display->display,
265			display->visual,
266			display->cmap,
267			&d, &c);
268	pcg	1.1	#else
269			this->p = p;
270			#endif
271
272			return true;
273			}
274
275			bool
276	pcg	1.4	rxvt_color::set (rxvt_display display, const char name)
277	pcg	1.1	{
278			XColor xc;
279
280	pcg	1.4	if (XParseColor (display->display, display->cmap, name, &xc))
281			return set (display, xc.red, xc.green, xc.blue);
282	pcg	1.1
283			return false;
284			}
285
286			bool
287	pcg	1.4	rxvt_color::set (rxvt_display *display, unsigned short cr, unsigned short cg, unsigned short cb)
288	pcg	1.1	{
289			XColor xc;
290
291			xc.red = cr;
292			xc.green = cg;
293			xc.blue = cb;
294			xc.flags = DoRed \| DoGreen \| DoBlue;
295
296	pcg	1.4	if (XAllocColor (display->display, display->cmap, &xc))
297			return set (display, xc.pixel);
298	pcg	1.1
299			return false;
300			}
301
302			void
303	pcg	1.4	rxvt_color::get (rxvt_display *display, unsigned short &cr, unsigned short &cg, unsigned short &cb)
304	pcg	1.1	{
305			#if XFT
306			cr = c.color.red;
307			cg = c.color.green;
308			cb = c.color.blue;
309			#else
310			XColor c;
311
312			c.pixel = p;
313	pcg	1.4	XQueryColor (display->display, display->cmap, &c);
314	pcg	1.1
315			cr = c.red;
316			cg = c.green;
317			cb = c.blue;
318			#endif
319			}
320
321	pcg	1.4	void
322			rxvt_color::free (rxvt_display *display)
323			{
324			#if XFT
325			XftColorFree (display->display, display->visual, display->cmap, &c);
326			#else
327			XFreeColors (display->display, display->cmap, &c, 1, AllPlanes);
328			#endif
329			}
330