rxvt-unicode/src/rxvtimg.C

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

#if HAVE_IMG

rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height)
: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal),
  pm(0), refcnt(0)
{
}

rxvt_img::rxvt_img (const rxvt_img &img)
: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), refcnt(img.refcnt)
{
  if (refcnt)
    ++*refcnt;
}

#if 0
rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap)
: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)
{
}
#endif

rxvt_img *
rxvt_img::new_from_root (rxvt_screen *s)
{
  Display *dpy = s->display->dpy;
  unsigned int root_pm_w, root_pm_h;
  Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);
  if (root_pixmap == None)
    root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);

  if (root_pixmap == None)
    return 0;

  Window wdummy;
  int idummy;
  unsigned int udummy;

  if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
    return 0;

  rxvt_img *img = new rxvt_img (
     s,
     XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
     root_pm_w,
     root_pm_h
  );

  img->pm = root_pixmap;

  return img;
}

rxvt_img *
rxvt_img::new_from_file (rxvt_screen *s, const char *filename)
{
  GError *err = 0;
  GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);

  if (!pb)
    rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);

  rxvt_img *img = new rxvt_img (
     s,
     XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
     gdk_pixbuf_get_width (pb),
     gdk_pixbuf_get_height (pb)
  );
  img->alloc ();
  img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);

  g_object_unref (pb);

  return img;
}

void
rxvt_img::destroy ()
{
  if (!refcnt || --*refcnt)
    return;

  if (pm)
    XFreePixmap (s->display->dpy, pm);

  delete refcnt;
}

rxvt_img::~rxvt_img ()
{
  destroy ();
}

void
rxvt_img::alloc ()
{
  pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
  refcnt = new int (1);
}

void
rxvt_img::unshare ()
{
  if (refcnt && *refcnt == 1)
    return;

  Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
  GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
  XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);
  XFreeGC (s->display->dpy, gc);

  destroy ();

  pm = pm2;
  refcnt = new int (1);
}

void
rxvt_img::fill (const rxvt_color &c)
{
  XGCValues gcv;
  gcv.foreground = c;
  GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
  XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
  XFreeGC (s->display->dpy, gc);
}

static void
get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params)
{
  double sigma = radius / 2.0;
  double scale = sqrt (2.0 * M_PI) * sigma;
  double sum = 0.0;

  for (int i = 0; i < width; i++)
    {
      double x = i - width / 2;
      kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
      sum += kernel[i];
    }

  params[0] = XDoubleToFixed (width);
  params[1] = XDoubleToFixed (1);

  for (int i = 0; i < width; i++)
    params[i+2] = XDoubleToFixed (kernel[i] / sum);
}

rxvt_img *
rxvt_img::blur (int rh, int rv)
{
  if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
    return clone ();

  Display *dpy = s->display->dpy;
  int size = max (rh, rv) * 2 + 1;
  double *kernel = (double *)malloc (size * sizeof (double));
  XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
  rxvt_img *img = new rxvt_img (s, format, w, h);
  img->alloc ();

  XRenderPictureAttributes pa;

  pa.repeat = RepeatPad;
  Picture src = XRenderCreatePicture (dpy, pm     , format, CPRepeat, &pa);
  Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);

  Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
  Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
  XFreePixmap (dpy, tmp_pm);

  if (kernel && params)
    {
      size = rh * 2 + 1;
      get_gaussian_kernel (rh, size, kernel, params);

      XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
      XRenderComposite (dpy,
                        PictOpSrc,
                        src,
                        None,
                        tmp,
                        0, 0,
                        0, 0,
                        0, 0,
                        w, h);

      size = rv * 2 + 1;
      get_gaussian_kernel (rv, size, kernel, params);
      ::swap (params[0], params[1]);

      XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
      XRenderComposite (dpy,
                        PictOpSrc,
                        tmp,
                        None,
                        dst,
                        0, 0,
                        0, 0,
                        0, 0,
                        w, h);
    }

  free (kernel);
  free (params);
  XRenderFreePicture (dpy, src);
  XRenderFreePicture (dpy, dst);
  XRenderFreePicture (dpy, tmp);

  return img;
}

static Picture
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
{
  Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);

  XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
  XRenderPictureAttributes pa;
  pa.repeat = True;
  Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);

  XFreePixmap (dpy, pixmap);

  return mask;
}

void
rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
{
  Display *dpy = s->display->dpy;
  Picture src = create_xrender_mask (dpy, pm, True);
  Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);

  XRenderColor mask_c;
  mask_c.red   = r;
  mask_c.green = g;
  mask_c.blue  = b;
  mask_c.alpha = a;
  XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);

  XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);

  XRenderFreePicture (dpy, src);
  XRenderFreePicture (dpy, dst);
}

void
rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
{
  if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
    return;

  Display *dpy = s->display->dpy;
  Picture src = create_xrender_mask (dpy, pm, True);
  Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);

  XRenderColor mask_c;
  mask_c.red   = r;
  mask_c.green = g;
  mask_c.blue  = b;
  mask_c.alpha = a;
  XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);

  XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);

  XRenderFreePicture (dpy, src);
  XRenderFreePicture (dpy, dst);
}

bool
rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
{
  Display *dpy = s->display->dpy;

  if (s->visual->c_class != TrueColor)
    return false;

  uint32_t red_mask, green_mask, blue_mask, alpha_mask;

  red_mask   = (uint32_t)format->direct.redMask   << format->direct.red;
  green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
  blue_mask  = (uint32_t)format->direct.blueMask  << format->direct.blue;
  alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;

  int width_r = ecb_popcount32 (red_mask);
  int width_g = ecb_popcount32 (green_mask);
  int width_b = ecb_popcount32 (blue_mask);
  int width_a = ecb_popcount32 (alpha_mask);

  if (width_r > 8 || width_g > 8 || width_b > 8 || width_a > 8)
    return false;

  int sh_r = ecb_ctz32 (red_mask);
  int sh_g = ecb_ctz32 (green_mask);
  int sh_b = ecb_ctz32 (blue_mask);
  int sh_a = ecb_ctz32 (alpha_mask);

  if (width > 32767 || height > 32767)
    return false;

  XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
                                 width, height, 32, 0);
  if (!ximage)
    return false;

  if (height > INT_MAX / ximage->bytes_per_line
      || !(ximage->data = (char *)malloc (height * ximage->bytes_per_line)))
    {
      XDestroyImage (ximage);
      return false;
    }

  GC gc = XCreateGC (dpy, pm, 0, 0);

  ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;

  int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
  int channels = gdk_pixbuf_get_n_channels (pixbuf);
  unsigned char *row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels;
  char *line = ximage->data;

  for (int y = 0; y < height; y++)
    {
      for (int x = 0; x < width; x++)
        {
          unsigned char *pixel = row + x * channels;
          uint32_t value;
          unsigned char r, g, b, a;

          if (channels == 4)
            {
              a = pixel[3];
              r = pixel[0] * a / 0xff;
              g = pixel[1] * a / 0xff;
              b = pixel[2] * a / 0xff;
            }
          else
            {
              a = 0xff;
              r = pixel[0];
              g = pixel[1];
              b = pixel[2];
            }

          value  = ((r >> (8 - width_r)) << sh_r)
                 | ((g >> (8 - width_g)) << sh_g)
                 | ((b >> (8 - width_b)) << sh_b)
                 | ((a >> (8 - width_a)) << sh_a);

          if (ximage->bits_per_pixel == 32)
            ((uint32_t *)line)[x] = value;
          else
            XPutPixel (ximage, x, y, value);
        }

      row += rowstride;
      line += ximage->bytes_per_line;
    }

  XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);
  XDestroyImage (ximage);
  XFreeGC (dpy, gc);

  return true;
}

rxvt_img *
rxvt_img::clone ()
{
  return new rxvt_img (*this);
}

rxvt_img *
rxvt_img::sub_rect (int x, int y, int width, int height)
{
  rxvt_img *img = new rxvt_img (s, format, width, height);
  img->alloc ();

  Display *dpy = s->display->dpy;
  XRenderPictureAttributes pa;
  pa.repeat = repeat;
  Picture src = XRenderCreatePicture (dpy,      pm,      format, CPRepeat, &pa);
  Picture dst = XRenderCreatePicture (dpy, img->pm, img->format,        0,   0);

  XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, width, height);

  XRenderFreePicture (dpy, src);
  XRenderFreePicture (dpy, dst);

  return img;
}

rxvt_img *
rxvt_img::transform (int new_width, int new_height, double matrix[9])
{
  rxvt_img *img = new rxvt_img (s, format, new_width, new_height);
  img->alloc ();

  Display *dpy = s->display->dpy;
  XRenderPictureAttributes pa;
  pa.repeat = repeat;
  Picture src = XRenderCreatePicture (dpy,      pm,      format, CPRepeat, &pa);
  Picture dst = XRenderCreatePicture (dpy, img->pm, img->format,        0,   0);

  XTransform xfrm;

  for (int i = 0; i < 3; ++i)
    for (int j = 0; j < 3; ++j)
      xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);

  XRenderSetPictureFilter (dpy, src, "good", 0, 0);
  XRenderSetPictureTransform (dpy, src, &xfrm);
  XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);

  XRenderFreePicture (dpy, src);
  XRenderFreePicture (dpy, dst);

  return img;
}

rxvt_img *
rxvt_img::scale (int new_width, int new_height)
{
  double matrix[9] = {
    w  / (double)new_width, 0, 0,
    0, h / (double)new_height, 0,
    0,                      0, 1
  };

  return transform (new_width, new_height, matrix);
}

rxvt_img *
rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
{
  double s = sin (phi);
  double c = cos (phi);

  double matrix[9] = {
    c, -s, -c * x + s * y + x,
    s,  c, -s * x - c * y + y,
    0,  0,                  1
  };

  return transform (new_width, new_height, matrix);
}

rxvt_img *
rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg)
{
  if (new_format == format)
    return clone ();

  rxvt_img *img = new rxvt_img (s, new_format, w, h);
  img->alloc ();

  Display *dpy = s->display->dpy;
  Picture src = XRenderCreatePicture (dpy,      pm,     format, 0, 0);
  Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
  int op = PictOpSrc;

  if (format->direct.alphaMask && !new_format->direct.alphaMask)
    {
      // does it have to be that complicated
      rgba c;
      bg.get (c);

      XRenderColor rc = { c.r, c.g, c.b, 0xffff };
      XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);

      op = PictOpOver;
    }

  XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);

  XRenderFreePicture (dpy, src);
  XRenderFreePicture (dpy, dst);

  return img;
}

rxvt_img *
rxvt_img::blend (rxvt_img *img, double factor)
{
  rxvt_img *img2 = clone ();
  Display *dpy = s->display->dpy;
  Picture src = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
  Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
  Picture mask = create_xrender_mask (dpy, img->pm, False);

  XRenderColor mask_c;

  mask_c.alpha = float_to_component (factor);
  mask_c.red   =
  mask_c.green =
  mask_c.blue  = 0;
  XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);

  XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);

  XRenderFreePicture (dpy, src);
  XRenderFreePicture (dpy, dst);
  XRenderFreePicture (dpy, mask);

  return img2;
}

#endif

Revision:	1.32
Committed:	Thu Jun 7 07:53:12 2012 UTC (11 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.31:	+50 -20 lines
Log Message:	preliminary recounting
#	Content
1	#include <math.h>
2	#include "../config.h"
3	#include "rxvt.h"
4
5	#if HAVE_IMG
6
7	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height)
8	: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal),
9	pm(0), refcnt(0)
10	{
11	}
12
13	rxvt_img::rxvt_img (const rxvt_img &img)
14	: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), refcnt(img.refcnt)
15	{
16	if (refcnt)
17	++*refcnt;
18	}
19
20	#if 0
21	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height, Pixmap pixmap)
22	: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)
23	{
24	}
25	#endif
26
27	rxvt_img *
28	rxvt_img::new_from_root (rxvt_screen *s)
29	{
30	Display *dpy = s->display->dpy;
31	unsigned int root_pm_w, root_pm_h;
32	Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);
33	if (root_pixmap == None)
34	root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);
35
36	if (root_pixmap == None)
37	return 0;
38
39	Window wdummy;
40	int idummy;
41	unsigned int udummy;
42
43	if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
44	return 0;
45
46	rxvt_img *img = new rxvt_img (
47	s,
48	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
49	root_pm_w,
50	root_pm_h
51	);
52
53	img->pm = root_pixmap;
54
55	return img;
56	}
57
58	rxvt_img *
59	rxvt_img::new_from_file (rxvt_screen s, const char filename)
60	{
61	GError *err = 0;
62	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
63
64	if (!pb)
65	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
66
67	rxvt_img *img = new rxvt_img (
68	s,
69	XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
70	gdk_pixbuf_get_width (pb),
71	gdk_pixbuf_get_height (pb)
72	);
73	img->alloc ();
74	img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);
75
76	g_object_unref (pb);
77
78	return img;
79	}
80
81	void
82	rxvt_img::destroy ()
83	{
84	if (!refcnt \|\| --*refcnt)
85	return;
86
87	if (pm)
88	XFreePixmap (s->display->dpy, pm);
89
90	delete refcnt;
91	}
92
93	rxvt_img::~rxvt_img ()
94	{
95	destroy ();
96	}
97
98	void
99	rxvt_img::alloc ()
100	{
101	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
102	refcnt = new int (1);
103	}
104
105	void
106	rxvt_img::unshare ()
107	{
108	if (refcnt && *refcnt == 1)
109	return;
110
111	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
112	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
113	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);
114	XFreeGC (s->display->dpy, gc);
115
116	destroy ();
117
118	pm = pm2;
119	refcnt = new int (1);
120	}
121
122	void
123	rxvt_img::fill (const rxvt_color &c)
124	{
125	XGCValues gcv;
126	gcv.foreground = c;
127	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
128	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
129	XFreeGC (s->display->dpy, gc);
130	}
131
132	static void
133	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)
134	{
135	double sigma = radius / 2.0;
136	double scale = sqrt (2.0 * M_PI) * sigma;
137	double sum = 0.0;
138
139	for (int i = 0; i < width; i++)
140	{
141	double x = i - width / 2;
142	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
143	sum += kernel[i];
144	}
145
146	params[0] = XDoubleToFixed (width);
147	params[1] = XDoubleToFixed (1);
148
149	for (int i = 0; i < width; i++)
150	params[i+2] = XDoubleToFixed (kernel[i] / sum);
151	}
152
153	rxvt_img *
154	rxvt_img::blur (int rh, int rv)
155	{
156	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
157	return clone ();
158
159	Display *dpy = s->display->dpy;
160	int size = max (rh, rv) * 2 + 1;
161	double kernel = (double )malloc (size * sizeof (double));
162	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
163	rxvt_img *img = new rxvt_img (s, format, w, h);
164	img->alloc ();
165
166	XRenderPictureAttributes pa;
167
168	pa.repeat = RepeatPad;
169	Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);
170	Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);
171
172	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
173	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
174	XFreePixmap (dpy, tmp_pm);
175
176	if (kernel && params)
177	{
178	size = rh * 2 + 1;
179	get_gaussian_kernel (rh, size, kernel, params);
180
181	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
182	XRenderComposite (dpy,
183	PictOpSrc,
184	src,
185	None,
186	tmp,
187	0, 0,
188	0, 0,
189	0, 0,
190	w, h);
191
192	size = rv * 2 + 1;
193	get_gaussian_kernel (rv, size, kernel, params);
194	::swap (params[0], params[1]);
195
196	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
197	XRenderComposite (dpy,
198	PictOpSrc,
199	tmp,
200	None,
201	dst,
202	0, 0,
203	0, 0,
204	0, 0,
205	w, h);
206	}
207
208	free (kernel);
209	free (params);
210	XRenderFreePicture (dpy, src);
211	XRenderFreePicture (dpy, dst);
212	XRenderFreePicture (dpy, tmp);
213
214	return img;
215	}
216
217	static Picture
218	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
219	{
220	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
221
222	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
223	XRenderPictureAttributes pa;
224	pa.repeat = True;
225	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
226
227	XFreePixmap (dpy, pixmap);
228
229	return mask;
230	}
231
232	void
233	rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
234	{
235	Display *dpy = s->display->dpy;
236	Picture src = create_xrender_mask (dpy, pm, True);
237	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
238
239	XRenderColor mask_c;
240	mask_c.red = r;
241	mask_c.green = g;
242	mask_c.blue = b;
243	mask_c.alpha = a;
244	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
245
246	XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
247
248	XRenderFreePicture (dpy, src);
249	XRenderFreePicture (dpy, dst);
250	}
251
252	void
253	rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
254	{
255	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
256	return;
257
258	Display *dpy = s->display->dpy;
259	Picture src = create_xrender_mask (dpy, pm, True);
260	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
261
262	XRenderColor mask_c;
263	mask_c.red = r;
264	mask_c.green = g;
265	mask_c.blue = b;
266	mask_c.alpha = a;
267	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
268
269	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
270
271	XRenderFreePicture (dpy, src);
272	XRenderFreePicture (dpy, dst);
273	}
274
275	bool
276	rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
277	{
278	Display *dpy = s->display->dpy;
279
280	if (s->visual->c_class != TrueColor)
281	return false;
282
283	uint32_t red_mask, green_mask, blue_mask, alpha_mask;
284
285	red_mask = (uint32_t)format->direct.redMask << format->direct.red;
286	green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
287	blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
288	alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
289
290	int width_r = ecb_popcount32 (red_mask);
291	int width_g = ecb_popcount32 (green_mask);
292	int width_b = ecb_popcount32 (blue_mask);
293	int width_a = ecb_popcount32 (alpha_mask);
294
295	if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
296	return false;
297
298	int sh_r = ecb_ctz32 (red_mask);
299	int sh_g = ecb_ctz32 (green_mask);
300	int sh_b = ecb_ctz32 (blue_mask);
301	int sh_a = ecb_ctz32 (alpha_mask);
302
303	if (width > 32767 \|\| height > 32767)
304	return false;
305
306	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
307	width, height, 32, 0);
308	if (!ximage)
309	return false;
310
311	if (height > INT_MAX / ximage->bytes_per_line
312	\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
313	{
314	XDestroyImage (ximage);
315	return false;
316	}
317
318	GC gc = XCreateGC (dpy, pm, 0, 0);
319
320	ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
321
322	int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
323	int channels = gdk_pixbuf_get_n_channels (pixbuf);
324	unsigned char row = gdk_pixbuf_get_pixels (pixbuf) + src_y rowstride + src_x * channels;
325	char *line = ximage->data;
326
327	for (int y = 0; y < height; y++)
328	{
329	for (int x = 0; x < width; x++)
330	{
331	unsigned char pixel = row + x channels;
332	uint32_t value;
333	unsigned char r, g, b, a;
334
335	if (channels == 4)
336	{
337	a = pixel[3];
338	r = pixel[0] * a / 0xff;
339	g = pixel[1] * a / 0xff;
340	b = pixel[2] * a / 0xff;
341	}
342	else
343	{
344	a = 0xff;
345	r = pixel[0];
346	g = pixel[1];
347	b = pixel[2];
348	}
349
350	value = ((r >> (8 - width_r)) << sh_r)
351	\| ((g >> (8 - width_g)) << sh_g)
352	\| ((b >> (8 - width_b)) << sh_b)
353	\| ((a >> (8 - width_a)) << sh_a);
354
355	if (ximage->bits_per_pixel == 32)
356	((uint32_t *)line)[x] = value;
357	else
358	XPutPixel (ximage, x, y, value);
359	}
360
361	row += rowstride;
362	line += ximage->bytes_per_line;
363	}
364
365	XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);
366	XDestroyImage (ximage);
367	XFreeGC (dpy, gc);
368
369	return true;
370	}
371
372	rxvt_img *
373	rxvt_img::clone ()
374	{
375	return new rxvt_img (*this);
376	}
377
378	rxvt_img *
379	rxvt_img::sub_rect (int x, int y, int width, int height)
380	{
381	rxvt_img *img = new rxvt_img (s, format, width, height);
382	img->alloc ();
383
384	Display *dpy = s->display->dpy;
385	XRenderPictureAttributes pa;
386	pa.repeat = repeat;
387	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
388	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
389
390	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, width, height);
391
392	XRenderFreePicture (dpy, src);
393	XRenderFreePicture (dpy, dst);
394
395	return img;
396	}
397
398	rxvt_img *
399	rxvt_img::transform (int new_width, int new_height, double matrix[9])
400	{
401	rxvt_img *img = new rxvt_img (s, format, new_width, new_height);
402	img->alloc ();
403
404	Display *dpy = s->display->dpy;
405	XRenderPictureAttributes pa;
406	pa.repeat = repeat;
407	Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
408	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
409
410	XTransform xfrm;
411
412	for (int i = 0; i < 3; ++i)
413	for (int j = 0; j < 3; ++j)
414	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
415
416	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
417	XRenderSetPictureTransform (dpy, src, &xfrm);
418	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
419
420	XRenderFreePicture (dpy, src);
421	XRenderFreePicture (dpy, dst);
422
423	return img;
424	}
425
426	rxvt_img *
427	rxvt_img::scale (int new_width, int new_height)
428	{
429	double matrix[9] = {
430	w / (double)new_width, 0, 0,
431	0, h / (double)new_height, 0,
432	0, 0, 1
433	};
434
435	return transform (new_width, new_height, matrix);
436	}
437
438	rxvt_img *
439	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
440	{
441	double s = sin (phi);
442	double c = cos (phi);
443
444	double matrix[9] = {
445	c, -s, -c * x + s * y + x,
446	s, c, -s * x - c * y + y,
447	0, 0, 1
448	};
449
450	return transform (new_width, new_height, matrix);
451	}
452
453	rxvt_img *
454	rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg)
455	{
456	if (new_format == format)
457	return clone ();
458
459	rxvt_img *img = new rxvt_img (s, new_format, w, h);
460	img->alloc ();
461
462	Display *dpy = s->display->dpy;
463	Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
464	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
465	int op = PictOpSrc;
466
467	if (format->direct.alphaMask && !new_format->direct.alphaMask)
468	{
469	// does it have to be that complicated
470	rgba c;
471	bg.get (c);
472
473	XRenderColor rc = { c.r, c.g, c.b, 0xffff };
474	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
475
476	op = PictOpOver;
477	}
478
479	XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
480
481	XRenderFreePicture (dpy, src);
482	XRenderFreePicture (dpy, dst);
483
484	return img;
485	}
486
487	rxvt_img *
488	rxvt_img::blend (rxvt_img *img, double factor)
489	{
490	rxvt_img *img2 = clone ();
491	Display *dpy = s->display->dpy;
492	Picture src = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
493	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
494	Picture mask = create_xrender_mask (dpy, img->pm, False);
495
496	XRenderColor mask_c;
497
498	mask_c.alpha = float_to_component (factor);
499	mask_c.red =
500	mask_c.green =
501	mask_c.blue = 0;
502	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
503
504	XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
505
506	XRenderFreePicture (dpy, src);
507	XRenderFreePicture (dpy, dst);
508	XRenderFreePicture (dpy, mask);
509
510	return img2;
511	}
512
513	#endif
514