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 x, int y, int width, int height)
: s(screen), x(x), y(y), 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)),
     0,
     0,
     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),
     0,
     0,
     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, x, y, 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::reify ()
{
  rxvt_img *img = new rxvt_img (s, format, 0, 0, w, h);
  img->alloc ();

  // todo, if x==0  and y==0 and w==real width we could clone
  // but that involves an rtt to find pixmap width.

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

  return img;
}

rxvt_img *
rxvt_img::sub_rect (int x, int y, int width, int height)
{
  rxvt_img *img = clone ();

  img->x += x;
  img->y += y;
  img->w = width;
  img->h = height;

  return img;
}

rxvt_img *
rxvt_img::transform (int new_width, int new_height, double matrix[9])
{
  rxvt_img *img = new rxvt_img (s, format, 0, 0, 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]);

  xfrm.matrix [0][2] += XDoubleToFixed (x);//TODO
  xfrm.matrix [0][3] += XDoubleToFixed (y);

  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, x, y, 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:	1.33
Committed:	Thu Jun 7 08:12:55 2012 UTC (14 years, 4 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.32:	+33 -10 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	sf-exg	1.6	#include <math.h>
2	root	1.1	#include "../config.h"
3			#include "rxvt.h"
4
5			#if HAVE_IMG
6
7	root	1.33	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int x, int y, int width, int height)
8			: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(RepeatNormal),
9	root	1.32	pm(0), refcnt(0)
10	root	1.1	{
11			}
12
13	root	1.32	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	root	1.3	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height, Pixmap pixmap)
22	root	1.30	: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)
23	root	1.1	{
24			}
25	root	1.32	#endif
26	root	1.1
27	root	1.4	rxvt_img *
28	sf-exg	1.21	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	1.33	0,
50			0,
51	sf-exg	1.21	root_pm_w,
52	root	1.32	root_pm_h
53	sf-exg	1.21	);
54
55	root	1.32	img->pm = root_pixmap;
56	sf-exg	1.21
57			return img;
58			}
59
60			rxvt_img *
61	root	1.4	rxvt_img::new_from_file (rxvt_screen s, const char filename)
62			{
63	root	1.11	GError *err = 0;
64	root	1.4	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
65
66			if (!pb)
67	root	1.11	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
68	root	1.4
69			rxvt_img *img = new rxvt_img (
70			s,
71			XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
72	root	1.33	0,
73			0,
74	root	1.4	gdk_pixbuf_get_width (pb),
75			gdk_pixbuf_get_height (pb)
76			);
77	root	1.32	img->alloc ();
78	root	1.14	img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);
79	root	1.4
80	sf-exg	1.26	g_object_unref (pb);
81
82	root	1.4	return img;
83			}
84
85	root	1.32	void
86			rxvt_img::destroy ()
87			{
88			if (!refcnt \|\| --*refcnt)
89			return;
90
91			if (pm)
92			XFreePixmap (s->display->dpy, pm);
93
94			delete refcnt;
95			}
96
97	root	1.1	rxvt_img::~rxvt_img ()
98			{
99	root	1.32	destroy ();
100			}
101
102			void
103			rxvt_img::alloc ()
104			{
105			pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
106			refcnt = new int (1);
107	root	1.1	}
108
109			void
110	root	1.11	rxvt_img::unshare ()
111			{
112	root	1.32	if (refcnt && *refcnt == 1)
113	root	1.11	return;
114
115	root	1.32	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
116			GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
117			XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);
118			XFreeGC (s->display->dpy, gc);
119	root	1.11
120	root	1.32	destroy ();
121	root	1.11
122	root	1.32	pm = pm2;
123			refcnt = new int (1);
124	root	1.11	}
125
126			void
127	root	1.1	rxvt_img::fill (const rxvt_color &c)
128			{
129			XGCValues gcv;
130			gcv.foreground = c;
131			GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
132			XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
133	root	1.3	XFreeGC (s->display->dpy, gc);
134	root	1.1	}
135
136	sf-exg	1.6	static void
137			get_gaussian_kernel (int radius, int width, double kernel, XFixed params)
138			{
139			double sigma = radius / 2.0;
140			double scale = sqrt (2.0 * M_PI) * sigma;
141			double sum = 0.0;
142
143			for (int i = 0; i < width; i++)
144			{
145			double x = i - width / 2;
146			kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
147			sum += kernel[i];
148			}
149
150			params[0] = XDoubleToFixed (width);
151			params[1] = XDoubleToFixed (1);
152
153			for (int i = 0; i < width; i++)
154			params[i+2] = XDoubleToFixed (kernel[i] / sum);
155			}
156
157	sf-exg	1.22	rxvt_img *
158	root	1.3	rxvt_img::blur (int rh, int rv)
159			{
160	sf-exg	1.6	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
161	sf-exg	1.22	return clone ();
162	sf-exg	1.6
163			Display *dpy = s->display->dpy;
164			int size = max (rh, rv) * 2 + 1;
165			double kernel = (double )malloc (size * sizeof (double));
166			XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
167	root	1.33	rxvt_img *img = new rxvt_img (s, format, x, y, w, h);
168	root	1.32	img->alloc ();
169	sf-exg	1.6
170			XRenderPictureAttributes pa;
171
172			pa.repeat = RepeatPad;
173	sf-exg	1.22	Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);
174			Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);
175
176			Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
177			Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
178			XFreePixmap (dpy, tmp_pm);
179	sf-exg	1.6
180			if (kernel && params)
181			{
182			size = rh * 2 + 1;
183			get_gaussian_kernel (rh, size, kernel, params);
184
185			XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
186			XRenderComposite (dpy,
187			PictOpSrc,
188			src,
189			None,
190	sf-exg	1.22	tmp,
191	sf-exg	1.6	0, 0,
192			0, 0,
193			0, 0,
194			w, h);
195
196			size = rv * 2 + 1;
197			get_gaussian_kernel (rv, size, kernel, params);
198			::swap (params[0], params[1]);
199
200			XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
201			XRenderComposite (dpy,
202			PictOpSrc,
203	sf-exg	1.22	tmp,
204	sf-exg	1.6	None,
205			dst,
206			0, 0,
207			0, 0,
208			0, 0,
209			w, h);
210			}
211
212			free (kernel);
213			free (params);
214			XRenderFreePicture (dpy, src);
215			XRenderFreePicture (dpy, dst);
216	sf-exg	1.22	XRenderFreePicture (dpy, tmp);
217
218			return img;
219	sf-exg	1.6	}
220
221			static Picture
222			create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
223			{
224			Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
225
226			XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
227			XRenderPictureAttributes pa;
228			pa.repeat = True;
229			Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
230
231			XFreePixmap (dpy, pixmap);
232
233			return mask;
234	root	1.3	}
235
236			void
237	sf-exg	1.31	rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
238	root	1.3	{
239	sf-exg	1.6	Display *dpy = s->display->dpy;
240			Picture src = create_xrender_mask (dpy, pm, True);
241			Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
242
243			XRenderColor mask_c;
244	sf-exg	1.31	mask_c.red = r;
245			mask_c.green = g;
246			mask_c.blue = b;
247			mask_c.alpha = a;
248	sf-exg	1.6	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
249
250			XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
251	sf-exg	1.23
252			XRenderFreePicture (dpy, src);
253			XRenderFreePicture (dpy, dst);
254	root	1.3	}
255
256			void
257	sf-exg	1.31	rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
258	root	1.1	{
259	sf-exg	1.6	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
260			return;
261
262			Display *dpy = s->display->dpy;
263			Picture src = create_xrender_mask (dpy, pm, True);
264			Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
265
266			XRenderColor mask_c;
267	sf-exg	1.31	mask_c.red = r;
268			mask_c.green = g;
269			mask_c.blue = b;
270			mask_c.alpha = a;
271	sf-exg	1.6	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
272
273			XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
274	sf-exg	1.23
275			XRenderFreePicture (dpy, src);
276			XRenderFreePicture (dpy, dst);
277	root	1.1	}
278
279	root	1.14	bool
280			rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
281	root	1.3	{
282	root	1.14	Display *dpy = s->display->dpy;
283
284			if (s->visual->c_class != TrueColor)
285			return false;
286
287			uint32_t red_mask, green_mask, blue_mask, alpha_mask;
288
289	sf-exg	1.18	red_mask = (uint32_t)format->direct.redMask << format->direct.red;
290			green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
291			blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
292			alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
293	root	1.14
294			int width_r = ecb_popcount32 (red_mask);
295			int width_g = ecb_popcount32 (green_mask);
296			int width_b = ecb_popcount32 (blue_mask);
297			int width_a = ecb_popcount32 (alpha_mask);
298
299			if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
300			return false;
301
302			int sh_r = ecb_ctz32 (red_mask);
303			int sh_g = ecb_ctz32 (green_mask);
304			int sh_b = ecb_ctz32 (blue_mask);
305			int sh_a = ecb_ctz32 (alpha_mask);
306
307			if (width > 32767 \|\| height > 32767)
308			return false;
309
310	sf-exg	1.18	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
311	root	1.14	width, height, 32, 0);
312			if (!ximage)
313			return false;
314
315			if (height > INT_MAX / ximage->bytes_per_line
316			\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
317			{
318			XDestroyImage (ximage);
319			return false;
320			}
321
322			GC gc = XCreateGC (dpy, pm, 0, 0);
323
324			ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
325
326			int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
327			int channels = gdk_pixbuf_get_n_channels (pixbuf);
328			unsigned char row = gdk_pixbuf_get_pixels (pixbuf) + src_y rowstride + src_x * channels;
329			char *line = ximage->data;
330
331			for (int y = 0; y < height; y++)
332			{
333			for (int x = 0; x < width; x++)
334			{
335			unsigned char pixel = row + x channels;
336			uint32_t value;
337			unsigned char r, g, b, a;
338
339			if (channels == 4)
340			{
341			a = pixel[3];
342	sf-exg	1.25	r = pixel[0] * a / 0xff;
343			g = pixel[1] * a / 0xff;
344			b = pixel[2] * a / 0xff;
345	root	1.14	}
346			else
347			{
348			a = 0xff;
349			r = pixel[0];
350			g = pixel[1];
351			b = pixel[2];
352			}
353
354			value = ((r >> (8 - width_r)) << sh_r)
355			\| ((g >> (8 - width_g)) << sh_g)
356			\| ((b >> (8 - width_b)) << sh_b)
357			\| ((a >> (8 - width_a)) << sh_a);
358
359			if (ximage->bits_per_pixel == 32)
360			((uint32_t *)line)[x] = value;
361			else
362			XPutPixel (ximage, x, y, value);
363			}
364
365			row += rowstride;
366			line += ximage->bytes_per_line;
367			}
368
369			XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);
370			XDestroyImage (ximage);
371			XFreeGC (dpy, gc);
372
373			return true;
374	root	1.3	}
375
376			rxvt_img *
377	root	1.11	rxvt_img::clone ()
378	root	1.3	{
379	root	1.32	return new rxvt_img (*this);
380	root	1.3	}
381
382			rxvt_img *
383	root	1.33	rxvt_img::reify ()
384	root	1.19	{
385	root	1.33	rxvt_img *img = new rxvt_img (s, format, 0, 0, w, h);
386	root	1.32	img->alloc ();
387	root	1.19
388	root	1.33	// todo, if x==0 and y==0 and w==real width we could clone
389			// but that involves an rtt to find pixmap width.
390
391	root	1.19	Display *dpy = s->display->dpy;
392			XRenderPictureAttributes pa;
393			pa.repeat = repeat;
394			Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
395			Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
396	root	1.33
397			XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
398
399			XRenderFreePicture (dpy, src);
400			XRenderFreePicture (dpy, dst);
401	root	1.19
402	root	1.33	return img;
403			}
404	root	1.19
405	root	1.33	rxvt_img *
406			rxvt_img::sub_rect (int x, int y, int width, int height)
407			{
408			rxvt_img *img = clone ();
409
410			img->x += x;
411			img->y += y;
412			img->w = width;
413			img->h = height;
414	root	1.19
415			return img;
416			}
417
418			rxvt_img *
419	root	1.30	rxvt_img::transform (int new_width, int new_height, double matrix[9])
420	root	1.3	{
421	root	1.33	rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height);
422	root	1.32	img->alloc ();
423	root	1.12
424			Display *dpy = s->display->dpy;
425	root	1.13	XRenderPictureAttributes pa;
426			pa.repeat = repeat;
427			Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
428			Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
429	root	1.12
430			XTransform xfrm;
431
432			for (int i = 0; i < 3; ++i)
433			for (int j = 0; j < 3; ++j)
434			xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
435
436	root	1.33	xfrm.matrix [0][2] += XDoubleToFixed (x);//TODO
437			xfrm.matrix [0][3] += XDoubleToFixed (y);
438
439	root	1.17	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
440	root	1.12	XRenderSetPictureTransform (dpy, src, &xfrm);
441			XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
442
443			XRenderFreePicture (dpy, src);
444			XRenderFreePicture (dpy, dst);
445
446			return img;
447	root	1.3	}
448
449			rxvt_img *
450			rxvt_img::scale (int new_width, int new_height)
451			{
452	root	1.11	double matrix[9] = {
453	root	1.16	w / (double)new_width, 0, 0,
454			0, h / (double)new_height, 0,
455	root	1.11	0, 0, 1
456			};
457
458	root	1.19	return transform (new_width, new_height, matrix);
459	root	1.3	}
460
461	sf-exg	1.7	rxvt_img *
462	root	1.30	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
463	root	1.17	{
464			double s = sin (phi);
465			double c = cos (phi);
466
467			double matrix[9] = {
468			c, -s, -c * x + s * y + x,
469			s, c, -s * x - c * y + y,
470			0, 0, 1
471			};
472
473	root	1.30	return transform (new_width, new_height, matrix);
474	root	1.17	}
475
476			rxvt_img *
477	root	1.27	rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg)
478	sf-exg	1.7	{
479	root	1.32	if (new_format == format)
480			return clone ();
481
482	root	1.33	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h);
483	root	1.32	img->alloc ();
484	root	1.9
485	sf-exg	1.7	Display *dpy = s->display->dpy;
486	root	1.12	Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
487	root	1.8	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
488	root	1.27	int op = PictOpSrc;
489	sf-exg	1.7
490	root	1.29	if (format->direct.alphaMask && !new_format->direct.alphaMask)
491	root	1.27	{
492			// does it have to be that complicated
493			rgba c;
494			bg.get (c);
495
496			XRenderColor rc = { c.r, c.g, c.b, 0xffff };
497	root	1.28	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
498	root	1.27
499			op = PictOpOver;
500			}
501
502			XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
503	sf-exg	1.7
504			XRenderFreePicture (dpy, src);
505			XRenderFreePicture (dpy, dst);
506
507			return img;
508			}
509	root	1.3
510	sf-exg	1.24	rxvt_img *
511			rxvt_img::blend (rxvt_img *img, double factor)
512			{
513			rxvt_img *img2 = clone ();
514			Display *dpy = s->display->dpy;
515			Picture src = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
516			Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
517			Picture mask = create_xrender_mask (dpy, img->pm, False);
518
519			XRenderColor mask_c;
520
521			mask_c.alpha = float_to_component (factor);
522			mask_c.red =
523			mask_c.green =
524			mask_c.blue = 0;
525			XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
526
527			XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
528
529			XRenderFreePicture (dpy, src);
530			XRenderFreePicture (dpy, dst);
531			XRenderFreePicture (dpy, mask);
532
533			return img2;
534			}
535
536	root	1.1	#endif
537