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), ref(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), ref(img.ref)
{
  ++ref->cnt;
}

#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;
  img->ref = new pixref (root_pm_w, root_pm_h);
  img->ref->ours = false;

  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 (--ref->cnt)
    return;

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

  delete ref;
}

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

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

Picture
rxvt_img::src_picture ()
{
  Display *dpy = s->display->dpy;

  XRenderPictureAttributes pa;
  pa.repeat = repeat;
  Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);

  XRectangle clip = { -x, -y, min (w, ref->w), min (h, ref->h) };
  XRenderSetPictureClipRectangles (dpy, pic, 0, 0, &clip, 1);

  return pic;
}

void
rxvt_img::unshare ()
{
  if (ref->cnt == 1 && ref->ours)
    return;

  //TODO: maybe should reify instead
  Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
  GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
  XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
  XFreeGC (s->display->dpy, gc);

  destroy ();

  pm = pm2;
  ref = new pixref (ref->w, ref->h);
}

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 ();

  Picture src = src_picture ();

  XRenderPictureAttributes pa;
  pa.repeat = RepeatPad;
  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;

  Picture src = src_picture ();
  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 ();

  //TODO: width > w, must reify

  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;
  Picture src = src_picture ();
  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, 0, 0, w, h);
  img->alloc ();

  Display *dpy = s->display->dpy;
  Picture src = src_picture ();
  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 = src_picture ();
  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:	1.34
Committed:	Thu Jun 7 08:36:09 2012 UTC (11 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.33:	+41 -25 lines
Log Message:	not quite
#	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 x, int y, int width, int height)
8	: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(RepeatNormal),
9	pm(0), ref(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), ref(img.ref)
15	{
16	++ref->cnt;
17	}
18
19	#if 0
20	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height, Pixmap pixmap)
21	: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)
22	{
23	}
24	#endif
25
26	rxvt_img *
27	rxvt_img::new_from_root (rxvt_screen *s)
28	{
29	Display *dpy = s->display->dpy;
30	unsigned int root_pm_w, root_pm_h;
31	Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);
32	if (root_pixmap == None)
33	root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);
34
35	if (root_pixmap == None)
36	return 0;
37
38	Window wdummy;
39	int idummy;
40	unsigned int udummy;
41
42	if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
43	return 0;
44
45	rxvt_img *img = new rxvt_img (
46	s,
47	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
48	0,
49	0,
50	root_pm_w,
51	root_pm_h
52	);
53
54	img->pm = root_pixmap;
55	img->ref = new pixref (root_pm_w, root_pm_h);
56	img->ref->ours = false;
57
58	return img;
59	}
60
61	rxvt_img *
62	rxvt_img::new_from_file (rxvt_screen s, const char filename)
63	{
64	GError *err = 0;
65	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
66
67	if (!pb)
68	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
69
70	rxvt_img *img = new rxvt_img (
71	s,
72	XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
73	0,
74	0,
75	gdk_pixbuf_get_width (pb),
76	gdk_pixbuf_get_height (pb)
77	);
78	img->alloc ();
79	img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);
80
81	g_object_unref (pb);
82
83	return img;
84	}
85
86	void
87	rxvt_img::destroy ()
88	{
89	if (--ref->cnt)
90	return;
91
92	if (pm && ref->ours)
93	XFreePixmap (s->display->dpy, pm);
94
95	delete ref;
96	}
97
98	rxvt_img::~rxvt_img ()
99	{
100	destroy ();
101	}
102
103	void
104	rxvt_img::alloc ()
105	{
106	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
107	ref = new pixref (w, h);
108	}
109
110	Picture
111	rxvt_img::src_picture ()
112	{
113	Display *dpy = s->display->dpy;
114
115	XRenderPictureAttributes pa;
116	pa.repeat = repeat;
117	Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
118
119	XRectangle clip = { -x, -y, min (w, ref->w), min (h, ref->h) };
120	XRenderSetPictureClipRectangles (dpy, pic, 0, 0, &clip, 1);
121
122	return pic;
123	}
124
125	void
126	rxvt_img::unshare ()
127	{
128	if (ref->cnt == 1 && ref->ours)
129	return;
130
131	//TODO: maybe should reify instead
132	Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
133	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
134	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
135	XFreeGC (s->display->dpy, gc);
136
137	destroy ();
138
139	pm = pm2;
140	ref = new pixref (ref->w, ref->h);
141	}
142
143	void
144	rxvt_img::fill (const rxvt_color &c)
145	{
146	XGCValues gcv;
147	gcv.foreground = c;
148	GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
149	XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
150	XFreeGC (s->display->dpy, gc);
151	}
152
153	static void
154	get_gaussian_kernel (int radius, int width, double kernel, XFixed params)
155	{
156	double sigma = radius / 2.0;
157	double scale = sqrt (2.0 * M_PI) * sigma;
158	double sum = 0.0;
159
160	for (int i = 0; i < width; i++)
161	{
162	double x = i - width / 2;
163	kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
164	sum += kernel[i];
165	}
166
167	params[0] = XDoubleToFixed (width);
168	params[1] = XDoubleToFixed (1);
169
170	for (int i = 0; i < width; i++)
171	params[i+2] = XDoubleToFixed (kernel[i] / sum);
172	}
173
174	rxvt_img *
175	rxvt_img::blur (int rh, int rv)
176	{
177	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
178	return clone ();
179
180	Display *dpy = s->display->dpy;
181	int size = max (rh, rv) * 2 + 1;
182	double kernel = (double )malloc (size * sizeof (double));
183	XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
184	rxvt_img *img = new rxvt_img (s, format, x, y, w, h);
185	img->alloc ();
186
187	Picture src = src_picture ();
188
189	XRenderPictureAttributes pa;
190	pa.repeat = RepeatPad;
191	Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);
192
193	Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
194	Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
195	XFreePixmap (dpy, tmp_pm);
196
197	if (kernel && params)
198	{
199	size = rh * 2 + 1;
200	get_gaussian_kernel (rh, size, kernel, params);
201
202	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
203	XRenderComposite (dpy,
204	PictOpSrc,
205	src,
206	None,
207	tmp,
208	0, 0,
209	0, 0,
210	0, 0,
211	w, h);
212
213	size = rv * 2 + 1;
214	get_gaussian_kernel (rv, size, kernel, params);
215	::swap (params[0], params[1]);
216
217	XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
218	XRenderComposite (dpy,
219	PictOpSrc,
220	tmp,
221	None,
222	dst,
223	0, 0,
224	0, 0,
225	0, 0,
226	w, h);
227	}
228
229	free (kernel);
230	free (params);
231	XRenderFreePicture (dpy, src);
232	XRenderFreePicture (dpy, dst);
233	XRenderFreePicture (dpy, tmp);
234
235	return img;
236	}
237
238	static Picture
239	create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
240	{
241	Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
242
243	XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
244	XRenderPictureAttributes pa;
245	pa.repeat = True;
246	Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
247
248	XFreePixmap (dpy, pixmap);
249
250	return mask;
251	}
252
253	void
254	rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
255	{
256	Display *dpy = s->display->dpy;
257	Picture src = create_xrender_mask (dpy, pm, True);
258	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
259
260	XRenderColor mask_c;
261	mask_c.red = r;
262	mask_c.green = g;
263	mask_c.blue = b;
264	mask_c.alpha = a;
265	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
266
267	XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
268
269	XRenderFreePicture (dpy, src);
270	XRenderFreePicture (dpy, dst);
271	}
272
273	void
274	rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
275	{
276	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
277	return;
278
279	Display *dpy = s->display->dpy;
280	Picture src = create_xrender_mask (dpy, pm, True);
281	Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
282
283	XRenderColor mask_c;
284	mask_c.red = r;
285	mask_c.green = g;
286	mask_c.blue = b;
287	mask_c.alpha = a;
288	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
289
290	XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
291
292	XRenderFreePicture (dpy, src);
293	XRenderFreePicture (dpy, dst);
294	}
295
296	bool
297	rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
298	{
299	Display *dpy = s->display->dpy;
300
301	if (s->visual->c_class != TrueColor)
302	return false;
303
304	uint32_t red_mask, green_mask, blue_mask, alpha_mask;
305
306	red_mask = (uint32_t)format->direct.redMask << format->direct.red;
307	green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
308	blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
309	alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
310
311	int width_r = ecb_popcount32 (red_mask);
312	int width_g = ecb_popcount32 (green_mask);
313	int width_b = ecb_popcount32 (blue_mask);
314	int width_a = ecb_popcount32 (alpha_mask);
315
316	if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
317	return false;
318
319	int sh_r = ecb_ctz32 (red_mask);
320	int sh_g = ecb_ctz32 (green_mask);
321	int sh_b = ecb_ctz32 (blue_mask);
322	int sh_a = ecb_ctz32 (alpha_mask);
323
324	if (width > 32767 \|\| height > 32767)
325	return false;
326
327	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
328	width, height, 32, 0);
329	if (!ximage)
330	return false;
331
332	if (height > INT_MAX / ximage->bytes_per_line
333	\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
334	{
335	XDestroyImage (ximage);
336	return false;
337	}
338
339	GC gc = XCreateGC (dpy, pm, 0, 0);
340
341	ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
342
343	int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
344	int channels = gdk_pixbuf_get_n_channels (pixbuf);
345	unsigned char row = gdk_pixbuf_get_pixels (pixbuf) + src_y rowstride + src_x * channels;
346	char *line = ximage->data;
347
348	for (int y = 0; y < height; y++)
349	{
350	for (int x = 0; x < width; x++)
351	{
352	unsigned char pixel = row + x channels;
353	uint32_t value;
354	unsigned char r, g, b, a;
355
356	if (channels == 4)
357	{
358	a = pixel[3];
359	r = pixel[0] * a / 0xff;
360	g = pixel[1] * a / 0xff;
361	b = pixel[2] * a / 0xff;
362	}
363	else
364	{
365	a = 0xff;
366	r = pixel[0];
367	g = pixel[1];
368	b = pixel[2];
369	}
370
371	value = ((r >> (8 - width_r)) << sh_r)
372	\| ((g >> (8 - width_g)) << sh_g)
373	\| ((b >> (8 - width_b)) << sh_b)
374	\| ((a >> (8 - width_a)) << sh_a);
375
376	if (ximage->bits_per_pixel == 32)
377	((uint32_t *)line)[x] = value;
378	else
379	XPutPixel (ximage, x, y, value);
380	}
381
382	row += rowstride;
383	line += ximage->bytes_per_line;
384	}
385
386	XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);
387	XDestroyImage (ximage);
388	XFreeGC (dpy, gc);
389
390	return true;
391	}
392
393	rxvt_img *
394	rxvt_img::clone ()
395	{
396	return new rxvt_img (*this);
397	}
398
399	rxvt_img *
400	rxvt_img::reify ()
401	{
402	rxvt_img *img = new rxvt_img (s, format, 0, 0, w, h);
403	img->alloc ();
404
405	// todo, if x==0 and y==0 and w==real width we could clone
406	// but that involves an rtt to find pixmap width.
407
408	Display *dpy = s->display->dpy;
409
410	Picture src = src_picture ();
411	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
412
413	XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
414
415	XRenderFreePicture (dpy, src);
416	XRenderFreePicture (dpy, dst);
417
418	return img;
419	}
420
421	rxvt_img *
422	rxvt_img::sub_rect (int x, int y, int width, int height)
423	{
424	rxvt_img *img = clone ();
425
426	//TODO: width > w, must reify
427
428	img->x += x;
429	img->y += y;
430	img->w = width;
431	img->h = height;
432
433	return img;
434	}
435
436	rxvt_img *
437	rxvt_img::transform (int new_width, int new_height, double matrix[9])
438	{
439	rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height);
440	img->alloc ();
441
442	Display *dpy = s->display->dpy;
443	Picture src = src_picture ();
444	Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
445
446	XTransform xfrm;
447
448	for (int i = 0; i < 3; ++i)
449	for (int j = 0; j < 3; ++j)
450	xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
451
452	xfrm.matrix [0][2] += XDoubleToFixed (x);//TODO
453	xfrm.matrix [0][3] += XDoubleToFixed (y);
454
455	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
456	XRenderSetPictureTransform (dpy, src, &xfrm);
457	XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
458
459	XRenderFreePicture (dpy, src);
460	XRenderFreePicture (dpy, dst);
461
462	return img;
463	}
464
465	rxvt_img *
466	rxvt_img::scale (int new_width, int new_height)
467	{
468	double matrix[9] = {
469	w / (double)new_width, 0, 0,
470	0, h / (double)new_height, 0,
471	0, 0, 1
472	};
473
474	return transform (new_width, new_height, matrix);
475	}
476
477	rxvt_img *
478	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
479	{
480	double s = sin (phi);
481	double c = cos (phi);
482
483	double matrix[9] = {
484	c, -s, -c * x + s * y + x,
485	s, c, -s * x - c * y + y,
486	0, 0, 1
487	};
488
489	return transform (new_width, new_height, matrix);
490	}
491
492	rxvt_img *
493	rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg)
494	{
495	if (new_format == format)
496	return clone ();
497
498	rxvt_img *img = new rxvt_img (s, new_format, 0, 0, w, h);
499	img->alloc ();
500
501	Display *dpy = s->display->dpy;
502	Picture src = src_picture ();
503	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
504	int op = PictOpSrc;
505
506	if (format->direct.alphaMask && !new_format->direct.alphaMask)
507	{
508	// does it have to be that complicated
509	rgba c;
510	bg.get (c);
511
512	XRenderColor rc = { c.r, c.g, c.b, 0xffff };
513	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
514
515	op = PictOpOver;
516	}
517
518	XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
519
520	XRenderFreePicture (dpy, src);
521	XRenderFreePicture (dpy, dst);
522
523	return img;
524	}
525
526	rxvt_img *
527	rxvt_img::blend (rxvt_img *img, double factor)
528	{
529	rxvt_img *img2 = clone ();
530	Display *dpy = s->display->dpy;
531	Picture src = src_picture ();
532	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
533	Picture mask = create_xrender_mask (dpy, img->pm, False);
534
535	XRenderColor mask_c;
536
537	mask_c.alpha = float_to_component (factor);
538	mask_c.red =
539	mask_c.green =
540	mask_c.blue = 0;
541	XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
542
543	XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
544
545	XRenderFreePicture (dpy, src);
546	XRenderFreePicture (dpy, dst);
547	XRenderFreePicture (dpy, mask);
548
549	return img2;
550	}
551
552	#endif
553