rxvt-unicode/src/rxvtcolor.C

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

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

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

rxvt_display::rxvt_display (const char *name)
: x_watcher (this, &rxvt_display::x_event)
, selection_owner (0)
{
  this->name = STRDUP (name);
}

rxvt_display::~rxvt_display ()
{
  free (name);
}

bool rxvt_display::open ()
{
  display = XOpenDisplay (name);

  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);

  return true;
}

void rxvt_display::close ()
{
  x_watcher.stop ();

  XCloseDisplay (display);
}

void rxvt_display::x_event (io_watcher &w, short revents)
{
  do
    {
      XEvent xev;
      XNextEvent (display, &xev);

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

  selection_owner = owner;
}

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

rxvt_displays displays;

rxvt_display *rxvt_displays::get (const char *name)
{
  for (rxvt_display **i = list.begin (); i < list.end (); ++i)
    {
      if (!strcmp (name, (*i)->name))
        {
          (*i)->referenced++;
          return *i;
        }
    }

  rxvt_display *display = new rxvt_display (name);

  display->referenced = 1;

  if (display && display->open ())
    list.push_back (display);
  else
    {
      delete display;
      display = 0;
    }

  return display;
}

void rxvt_displays::release (rxvt_display *display)
{
  if (!--display->referenced)
    {
      display->close ();
      delete display;
      list.erase (find (list.begin (), list.end (), display));
    }
}

/////////////////////////////////////////////////////////////////////////////
  
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:	1.5
Committed:	Tue Feb 10 00:40:39 2004 UTC (20 years, 4 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+9 -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	1.4	/////////////////////////////////////////////////////////////////////////////
9
10			rxvt_display::rxvt_display (const char *name)
11			: x_watcher (this, &rxvt_display::x_event)
12	pcg	1.5	, selection_owner (0)
13	pcg	1.4	{
14			this->name = STRDUP (name);
15			}
16
17			rxvt_display::~rxvt_display ()
18			{
19			free (name);
20			}
21
22			bool rxvt_display::open ()
23			{
24			display = XOpenDisplay (name);
25
26			screen = DefaultScreen (display);
27			root = DefaultRootWindow (display);
28			visual = DefaultVisual (display, screen);
29			cmap = DefaultColormap (display, screen);
30			depth = DefaultDepth (display, screen);
31
32			#ifdef PREFER_24BIT
33			/*
34			* If depth is not 24, look for a 24bit visual.
35			*/
36			if (depth != 24)
37			{
38			XVisualInfo vinfo;
39
40			if (XMatchVisualInfo (display, screen, 24, TrueColor, &vinfo))
41			{
42			depth = 24;
43			visual = vinfo.visual;
44			cmap = XCreateColormap (display,
45			RootWindow (display, screen),
46			visual, AllocNone);
47			}
48			}
49			#endif
50
51			int fd = XConnectionNumber (display);
52			x_watcher.start (fd, EVENT_READ);
53			fcntl (fd, F_SETFL, FD_CLOEXEC);
54
55			return true;
56			}
57
58			void rxvt_display::close ()
59			{
60			x_watcher.stop ();
61
62			XCloseDisplay (display);
63			}
64
65			void rxvt_display::x_event (io_watcher &w, short revents)
66			{
67			do
68			{
69			XEvent xev;
70			XNextEvent (display, &xev);
71
72			for (int i = xw.size (); i--; )
73			{
74			if (!xw[i])
75			xw.erase_unordered (i);
76			else if (xw[i]->window == xev.xany.window)
77			xw[i]->call (xev);
78			}
79			}
80			while (XPending (display));
81			}
82
83			void rxvt_display::reg (xevent_watcher *w)
84			{
85			xw.push_back (w);
86			w->active = xw.size ();
87			}
88
89			void rxvt_display::unreg (xevent_watcher *w)
90			{
91			if (w->active)
92			xw[w->active - 1] = 0;
93			}
94
95	pcg	1.5	void rxvt_display::set_selection_owner (rxvt_term *owner)
96			{
97			if (selection_owner && selection_owner != owner)
98			selection_owner->selection_clear ();
99
100			selection_owner = owner;
101			}
102
103	pcg	1.4	/////////////////////////////////////////////////////////////////////////////
104
105			rxvt_displays displays;
106
107			rxvt_display rxvt_displays::get (const char name)
108			{
109			for (rxvt_display **i = list.begin (); i < list.end (); ++i)
110			{
111			if (!strcmp (name, (*i)->name))
112			{
113			(*i)->referenced++;
114			return *i;
115			}
116			}
117
118			rxvt_display *display = new rxvt_display (name);
119
120			display->referenced = 1;
121
122			if (display && display->open ())
123			list.push_back (display);
124			else
125			{
126			delete display;
127			display = 0;
128			}
129
130			return display;
131			}
132
133			void rxvt_displays::release (rxvt_display *display)
134			{
135			if (!--display->referenced)
136			{
137			display->close ();
138			delete display;
139			list.erase (find (list.begin (), list.end (), display));
140			}
141			}
142
143			/////////////////////////////////////////////////////////////////////////////
144
145	pcg	1.1	bool
146	pcg	1.4	rxvt_color::set (rxvt_display *display, Pixel p)
147	pcg	1.1	{
148			#if XFT
149			XColor xc;
150
151			xc.pixel = p;
152	pcg	1.4	if (!XQueryColor (display->display, display->cmap, &xc))
153	pcg	1.1	return false;
154
155			XRenderColor d;
156
157			d.red = xc.red;
158			d.green = xc.green;
159			d.blue = xc.blue;
160			d.alpha = 0xffff;
161
162			return
163	pcg	1.4	XftColorAllocValue (display->display,
164			display->visual,
165			display->cmap,
166			&d, &c);
167	pcg	1.1	#else
168			this->p = p;
169			#endif
170
171			return true;
172			}
173
174			bool
175	pcg	1.4	rxvt_color::set (rxvt_display display, const char name)
176	pcg	1.1	{
177			XColor xc;
178
179	pcg	1.4	if (XParseColor (display->display, display->cmap, name, &xc))
180			return set (display, xc.red, xc.green, xc.blue);
181	pcg	1.1
182			return false;
183			}
184
185			bool
186	pcg	1.4	rxvt_color::set (rxvt_display *display, unsigned short cr, unsigned short cg, unsigned short cb)
187	pcg	1.1	{
188			XColor xc;
189
190			xc.red = cr;
191			xc.green = cg;
192			xc.blue = cb;
193			xc.flags = DoRed \| DoGreen \| DoBlue;
194
195	pcg	1.4	if (XAllocColor (display->display, display->cmap, &xc))
196			return set (display, xc.pixel);
197	pcg	1.1
198			return false;
199			}
200
201			void
202	pcg	1.4	rxvt_color::get (rxvt_display *display, unsigned short &cr, unsigned short &cg, unsigned short &cb)
203	pcg	1.1	{
204			#if XFT
205			cr = c.color.red;
206			cg = c.color.green;
207			cb = c.color.blue;
208			#else
209			XColor c;
210
211			c.pixel = p;
212	pcg	1.4	XQueryColor (display->display, display->cmap, &c);
213	pcg	1.1
214			cr = c.red;
215			cg = c.green;
216			cb = c.blue;
217			#endif
218			}
219
220	pcg	1.4	void
221			rxvt_color::free (rxvt_display *display)
222			{
223			#if XFT
224			XftColorFree (display->display, display->visual, display->cmap, &c);
225			#else
226			XFreeColors (display->display, display->cmap, &c, 1, AllPlanes);
227			#endif
228			}
229