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)
{
  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;
}

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

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:	1.4
Committed:	Mon Feb 9 07:11:49 2004 UTC (20 years, 3 months ago) by pcg
Content type:	text/plain
Branch:	MAIN
Changes since 1.3:	+155 -16 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			{
13			this->name = STRDUP (name);
14			}
15
16			rxvt_display::~rxvt_display ()
17			{
18			free (name);
19			}
20
21			bool rxvt_display::open ()
22			{
23			display = XOpenDisplay (name);
24
25			screen = DefaultScreen (display);
26			root = DefaultRootWindow (display);
27			visual = DefaultVisual (display, screen);
28			cmap = DefaultColormap (display, screen);
29			depth = DefaultDepth (display, screen);
30
31			#ifdef PREFER_24BIT
32			/*
33			* If depth is not 24, look for a 24bit visual.
34			*/
35			if (depth != 24)
36			{
37			XVisualInfo vinfo;
38
39			if (XMatchVisualInfo (display, screen, 24, TrueColor, &vinfo))
40			{
41			depth = 24;
42			visual = vinfo.visual;
43			cmap = XCreateColormap (display,
44			RootWindow (display, screen),
45			visual, AllocNone);
46			}
47			}
48			#endif
49
50			int fd = XConnectionNumber (display);
51			x_watcher.start (fd, EVENT_READ);
52			fcntl (fd, F_SETFL, FD_CLOEXEC);
53
54			return true;
55			}
56
57			void rxvt_display::close ()
58			{
59			x_watcher.stop ();
60
61			XCloseDisplay (display);
62			}
63
64			void rxvt_display::x_event (io_watcher &w, short revents)
65			{
66			do
67			{
68			XEvent xev;
69			XNextEvent (display, &xev);
70
71			for (int i = xw.size (); i--; )
72			{
73			if (!xw[i])
74			xw.erase_unordered (i);
75			else if (xw[i]->window == xev.xany.window)
76			xw[i]->call (xev);
77			}
78			}
79			while (XPending (display));
80			}
81
82			void rxvt_display::reg (xevent_watcher *w)
83			{
84			xw.push_back (w);
85			w->active = xw.size ();
86			}
87
88			void rxvt_display::unreg (xevent_watcher *w)
89			{
90			if (w->active)
91			xw[w->active - 1] = 0;
92			}
93
94			/////////////////////////////////////////////////////////////////////////////
95
96			rxvt_displays displays;
97
98			rxvt_display rxvt_displays::get (const char name)
99			{
100			for (rxvt_display **i = list.begin (); i < list.end (); ++i)
101			{
102			if (!strcmp (name, (*i)->name))
103			{
104			(*i)->referenced++;
105			return *i;
106			}
107			}
108
109			rxvt_display *display = new rxvt_display (name);
110
111			display->referenced = 1;
112
113			if (display && display->open ())
114			list.push_back (display);
115			else
116			{
117			delete display;
118			display = 0;
119			}
120
121			return display;
122			}
123
124			void rxvt_displays::release (rxvt_display *display)
125			{
126			if (!--display->referenced)
127			{
128			display->close ();
129			delete display;
130			list.erase (find (list.begin (), list.end (), display));
131			}
132			}
133
134			/////////////////////////////////////////////////////////////////////////////
135
136	pcg	1.1	bool
137	pcg	1.4	rxvt_color::set (rxvt_display *display, Pixel p)
138	pcg	1.1	{
139			#if XFT
140			XColor xc;
141
142			xc.pixel = p;
143	pcg	1.4	if (!XQueryColor (display->display, display->cmap, &xc))
144	pcg	1.1	return false;
145
146			XRenderColor d;
147
148			d.red = xc.red;
149			d.green = xc.green;
150			d.blue = xc.blue;
151			d.alpha = 0xffff;
152
153			return
154	pcg	1.4	XftColorAllocValue (display->display,
155			display->visual,
156			display->cmap,
157			&d, &c);
158	pcg	1.1	#else
159			this->p = p;
160			#endif
161
162			return true;
163			}
164
165			bool
166	pcg	1.4	rxvt_color::set (rxvt_display display, const char name)
167	pcg	1.1	{
168			XColor xc;
169
170	pcg	1.4	if (XParseColor (display->display, display->cmap, name, &xc))
171			return set (display, xc.red, xc.green, xc.blue);
172	pcg	1.1
173			return false;
174			}
175
176			bool
177	pcg	1.4	rxvt_color::set (rxvt_display *display, unsigned short cr, unsigned short cg, unsigned short cb)
178	pcg	1.1	{
179			XColor xc;
180
181			xc.red = cr;
182			xc.green = cg;
183			xc.blue = cb;
184			xc.flags = DoRed \| DoGreen \| DoBlue;
185
186	pcg	1.4	if (XAllocColor (display->display, display->cmap, &xc))
187			return set (display, xc.pixel);
188	pcg	1.1
189			return false;
190			}
191
192			void
193	pcg	1.4	rxvt_color::get (rxvt_display *display, unsigned short &cr, unsigned short &cg, unsigned short &cb)
194	pcg	1.1	{
195			#if XFT
196			cr = c.color.red;
197			cg = c.color.green;
198			cb = c.color.blue;
199			#else
200			XColor c;
201
202			c.pixel = p;
203	pcg	1.4	XQueryColor (display->display, display->cmap, &c);
204	pcg	1.1
205			cr = c.red;
206			cg = c.green;
207			cb = c.blue;
208			#endif
209			}
210
211	pcg	1.4	void
212			rxvt_color::free (rxvt_display *display)
213			{
214			#if XFT
215			XftColorFree (display->display, display->visual, display->cmap, &c);
216			#else
217			XFreeColors (display->display, display->cmap, &c, 1, AllPlanes);
218			#endif
219			}
220