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);

  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 ()
{
  if (x == 0 && y == 0 && w == ref->w && h == ref->h)
    return clone ();

  rxvt_img *img = new rxvt_img (s, format, 0, 0, w, h);
  img->alloc ();

  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 ();

  img->x += x;
  img->y += y;

  if (w != width || h != height)
    {
      img->w = width;
      img->h = height;

      img->reify ();
    }

  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 = img->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:	1.38
Committed:	Thu Jun 7 09:57:09 2012 UTC (11 years, 11 months ago) by sf-exg
Content type:	text/plain
Branch:	MAIN
Changes since 1.37:	+1 -1 lines
Log Message:	Fix rxvt_img::blend.
#	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	1.34	pm(0), ref(0)
10	root	1.1	{
11			}
12
13	root	1.32	rxvt_img::rxvt_img (const rxvt_img &img)
14	root	1.34	: 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	root	1.32	{
16	root	1.34	++ref->cnt;
17	root	1.32	}
18
19			#if 0
20	root	1.3	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height, Pixmap pixmap)
21	root	1.30	: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)
22	root	1.1	{
23			}
24	root	1.32	#endif
25	root	1.1
26	root	1.4	rxvt_img *
27	sf-exg	1.21	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	root	1.33	0,
49			0,
50	sf-exg	1.21	root_pm_w,
51	root	1.32	root_pm_h
52	sf-exg	1.21	);
53
54	root	1.32	img->pm = root_pixmap;
55	root	1.34	img->ref = new pixref (root_pm_w, root_pm_h);
56			img->ref->ours = false;
57	sf-exg	1.21
58			return img;
59			}
60
61			rxvt_img *
62	root	1.4	rxvt_img::new_from_file (rxvt_screen s, const char filename)
63			{
64	root	1.11	GError *err = 0;
65	root	1.4	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
66
67			if (!pb)
68	root	1.11	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
69	root	1.4
70			rxvt_img *img = new rxvt_img (
71			s,
72			XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
73	root	1.33	0,
74			0,
75	root	1.4	gdk_pixbuf_get_width (pb),
76			gdk_pixbuf_get_height (pb)
77			);
78	root	1.32	img->alloc ();
79	root	1.14	img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);
80	root	1.4
81	sf-exg	1.26	g_object_unref (pb);
82
83	root	1.4	return img;
84			}
85
86	root	1.32	void
87			rxvt_img::destroy ()
88			{
89	root	1.34	if (--ref->cnt)
90	root	1.32	return;
91
92	root	1.34	if (pm && ref->ours)
93	root	1.32	XFreePixmap (s->display->dpy, pm);
94
95	root	1.34	delete ref;
96	root	1.32	}
97
98	root	1.1	rxvt_img::~rxvt_img ()
99			{
100	root	1.32	destroy ();
101			}
102
103			void
104			rxvt_img::alloc ()
105			{
106			pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
107	root	1.34	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			return pic;
120	root	1.1	}
121
122			void
123	root	1.11	rxvt_img::unshare ()
124			{
125	root	1.34	if (ref->cnt == 1 && ref->ours)
126	root	1.11	return;
127
128	root	1.34	//TODO: maybe should reify instead
129			Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
130	root	1.32	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
131	root	1.34	XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
132	root	1.32	XFreeGC (s->display->dpy, gc);
133	root	1.11
134	root	1.32	destroy ();
135	root	1.11
136	root	1.32	pm = pm2;
137	root	1.34	ref = new pixref (ref->w, ref->h);
138	root	1.11	}
139
140			void
141	root	1.1	rxvt_img::fill (const rxvt_color &c)
142			{
143			XGCValues gcv;
144			gcv.foreground = c;
145			GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
146			XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
147	root	1.3	XFreeGC (s->display->dpy, gc);
148	root	1.1	}
149
150	sf-exg	1.6	static void
151			get_gaussian_kernel (int radius, int width, double kernel, XFixed params)
152			{
153			double sigma = radius / 2.0;
154			double scale = sqrt (2.0 * M_PI) * sigma;
155			double sum = 0.0;
156
157			for (int i = 0; i < width; i++)
158			{
159			double x = i - width / 2;
160			kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
161			sum += kernel[i];
162			}
163
164			params[0] = XDoubleToFixed (width);
165			params[1] = XDoubleToFixed (1);
166
167			for (int i = 0; i < width; i++)
168			params[i+2] = XDoubleToFixed (kernel[i] / sum);
169			}
170
171	sf-exg	1.22	rxvt_img *
172	root	1.3	rxvt_img::blur (int rh, int rv)
173			{
174	sf-exg	1.6	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
175	sf-exg	1.22	return clone ();
176	sf-exg	1.6
177			Display *dpy = s->display->dpy;
178			int size = max (rh, rv) * 2 + 1;
179			double kernel = (double )malloc (size * sizeof (double));
180			XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
181	root	1.33	rxvt_img *img = new rxvt_img (s, format, x, y, w, h);
182	root	1.32	img->alloc ();
183	sf-exg	1.6
184	root	1.34	Picture src = src_picture ();
185
186	sf-exg	1.6	XRenderPictureAttributes pa;
187			pa.repeat = RepeatPad;
188	sf-exg	1.22	Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);
189
190			Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
191			Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
192			XFreePixmap (dpy, tmp_pm);
193	sf-exg	1.6
194			if (kernel && params)
195			{
196			size = rh * 2 + 1;
197			get_gaussian_kernel (rh, size, kernel, params);
198
199			XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
200			XRenderComposite (dpy,
201			PictOpSrc,
202			src,
203			None,
204	sf-exg	1.22	tmp,
205	sf-exg	1.6	0, 0,
206			0, 0,
207			0, 0,
208			w, h);
209
210			size = rv * 2 + 1;
211			get_gaussian_kernel (rv, size, kernel, params);
212			::swap (params[0], params[1]);
213
214			XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
215			XRenderComposite (dpy,
216			PictOpSrc,
217	sf-exg	1.22	tmp,
218	sf-exg	1.6	None,
219			dst,
220			0, 0,
221			0, 0,
222			0, 0,
223			w, h);
224			}
225
226			free (kernel);
227			free (params);
228			XRenderFreePicture (dpy, src);
229			XRenderFreePicture (dpy, dst);
230	sf-exg	1.22	XRenderFreePicture (dpy, tmp);
231
232			return img;
233	sf-exg	1.6	}
234
235			static Picture
236			create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
237			{
238			Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
239
240			XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
241			XRenderPictureAttributes pa;
242			pa.repeat = True;
243			Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
244
245			XFreePixmap (dpy, pixmap);
246
247			return mask;
248	root	1.3	}
249
250			void
251	sf-exg	1.31	rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
252	root	1.3	{
253	sf-exg	1.6	Display *dpy = s->display->dpy;
254			Picture src = create_xrender_mask (dpy, pm, True);
255			Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
256
257			XRenderColor mask_c;
258	sf-exg	1.31	mask_c.red = r;
259			mask_c.green = g;
260			mask_c.blue = b;
261			mask_c.alpha = a;
262	sf-exg	1.6	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
263
264			XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
265	sf-exg	1.23
266			XRenderFreePicture (dpy, src);
267			XRenderFreePicture (dpy, dst);
268	root	1.3	}
269
270			void
271	sf-exg	1.31	rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
272	root	1.1	{
273	sf-exg	1.6	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
274			return;
275
276			Display *dpy = s->display->dpy;
277			Picture src = create_xrender_mask (dpy, pm, True);
278			Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
279
280			XRenderColor mask_c;
281	sf-exg	1.31	mask_c.red = r;
282			mask_c.green = g;
283			mask_c.blue = b;
284			mask_c.alpha = a;
285	sf-exg	1.6	XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
286
287			XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
288	sf-exg	1.23
289			XRenderFreePicture (dpy, src);
290			XRenderFreePicture (dpy, dst);
291	root	1.1	}
292
293	root	1.14	bool
294			rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
295	root	1.3	{
296	root	1.14	Display *dpy = s->display->dpy;
297
298			if (s->visual->c_class != TrueColor)
299			return false;
300
301			uint32_t red_mask, green_mask, blue_mask, alpha_mask;
302
303	sf-exg	1.18	red_mask = (uint32_t)format->direct.redMask << format->direct.red;
304			green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
305			blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
306			alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
307	root	1.14
308			int width_r = ecb_popcount32 (red_mask);
309			int width_g = ecb_popcount32 (green_mask);
310			int width_b = ecb_popcount32 (blue_mask);
311			int width_a = ecb_popcount32 (alpha_mask);
312
313			if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
314			return false;
315
316			int sh_r = ecb_ctz32 (red_mask);
317			int sh_g = ecb_ctz32 (green_mask);
318			int sh_b = ecb_ctz32 (blue_mask);
319			int sh_a = ecb_ctz32 (alpha_mask);
320
321			if (width > 32767 \|\| height > 32767)
322			return false;
323
324	sf-exg	1.18	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
325	root	1.14	width, height, 32, 0);
326			if (!ximage)
327			return false;
328
329			if (height > INT_MAX / ximage->bytes_per_line
330			\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
331			{
332			XDestroyImage (ximage);
333			return false;
334			}
335
336			GC gc = XCreateGC (dpy, pm, 0, 0);
337
338			ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
339
340			int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
341			int channels = gdk_pixbuf_get_n_channels (pixbuf);
342			unsigned char row = gdk_pixbuf_get_pixels (pixbuf) + src_y rowstride + src_x * channels;
343			char *line = ximage->data;
344
345			for (int y = 0; y < height; y++)
346			{
347			for (int x = 0; x < width; x++)
348			{
349			unsigned char pixel = row + x channels;
350			uint32_t value;
351			unsigned char r, g, b, a;
352
353			if (channels == 4)
354			{
355			a = pixel[3];
356	sf-exg	1.25	r = pixel[0] * a / 0xff;
357			g = pixel[1] * a / 0xff;
358			b = pixel[2] * a / 0xff;
359	root	1.14	}
360			else
361			{
362			a = 0xff;
363			r = pixel[0];
364			g = pixel[1];
365			b = pixel[2];
366			}
367
368			value = ((r >> (8 - width_r)) << sh_r)
369			\| ((g >> (8 - width_g)) << sh_g)
370			\| ((b >> (8 - width_b)) << sh_b)
371			\| ((a >> (8 - width_a)) << sh_a);
372
373			if (ximage->bits_per_pixel == 32)
374			((uint32_t *)line)[x] = value;
375			else
376			XPutPixel (ximage, x, y, value);
377			}
378
379			row += rowstride;
380			line += ximage->bytes_per_line;
381			}
382
383			XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);
384			XDestroyImage (ximage);
385			XFreeGC (dpy, gc);
386
387			return true;
388	root	1.3	}
389
390			rxvt_img *
391	root	1.11	rxvt_img::clone ()
392	root	1.3	{
393	root	1.32	return new rxvt_img (*this);
394	root	1.3	}
395
396			rxvt_img *
397	root	1.33	rxvt_img::reify ()
398	root	1.19	{
399	root	1.35	if (x == 0 && y == 0 && w == ref->w && h == ref->h)
400			return clone ();
401
402	root	1.33	rxvt_img *img = new rxvt_img (s, format, 0, 0, w, h);
403	root	1.32	img->alloc ();
404	root	1.19
405			Display *dpy = s->display->dpy;
406	root	1.34
407			Picture src = src_picture ();
408			Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
409	root	1.33
410			XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
411
412			XRenderFreePicture (dpy, src);
413			XRenderFreePicture (dpy, dst);
414	root	1.19
415	root	1.33	return img;
416			}
417	root	1.19
418	root	1.33	rxvt_img *
419			rxvt_img::sub_rect (int x, int y, int width, int height)
420			{
421			rxvt_img *img = clone ();
422
423			img->x += x;
424			img->y += y;
425	root	1.19
426	root	1.37	if (w != width \|\| h != height)
427			{
428			img->w = width;
429			img->h = height;
430
431			img->reify ();
432			}
433	root	1.36
434	root	1.19	return img;
435			}
436
437			rxvt_img *
438	root	1.30	rxvt_img::transform (int new_width, int new_height, double matrix[9])
439	root	1.3	{
440	root	1.33	rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height);
441	root	1.32	img->alloc ();
442	root	1.12
443			Display *dpy = s->display->dpy;
444	root	1.34	Picture src = src_picture ();
445			Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
446	root	1.12
447			XTransform xfrm;
448
449			for (int i = 0; i < 3; ++i)
450			for (int j = 0; j < 3; ++j)
451			xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
452
453	root	1.33	xfrm.matrix [0][2] += XDoubleToFixed (x);//TODO
454			xfrm.matrix [0][3] += XDoubleToFixed (y);
455
456	root	1.17	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
457	root	1.12	XRenderSetPictureTransform (dpy, src, &xfrm);
458			XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
459
460			XRenderFreePicture (dpy, src);
461			XRenderFreePicture (dpy, dst);
462
463			return img;
464	root	1.3	}
465
466			rxvt_img *
467			rxvt_img::scale (int new_width, int new_height)
468			{
469	root	1.11	double matrix[9] = {
470	root	1.16	w / (double)new_width, 0, 0,
471			0, h / (double)new_height, 0,
472	root	1.11	0, 0, 1
473			};
474
475	root	1.19	return transform (new_width, new_height, matrix);
476	root	1.3	}
477
478	sf-exg	1.7	rxvt_img *
479	root	1.30	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
480	root	1.17	{
481			double s = sin (phi);
482			double c = cos (phi);
483
484			double matrix[9] = {
485			c, -s, -c * x + s * y + x,
486			s, c, -s * x - c * y + y,
487			0, 0, 1
488			};
489
490	root	1.30	return transform (new_width, new_height, matrix);
491	root	1.17	}
492
493			rxvt_img *
494	root	1.27	rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg)
495	sf-exg	1.7	{
496	root	1.32	if (new_format == format)
497			return clone ();
498
499	root	1.34	rxvt_img *img = new rxvt_img (s, new_format, 0, 0, w, h);
500	root	1.32	img->alloc ();
501	root	1.9
502	sf-exg	1.7	Display *dpy = s->display->dpy;
503	root	1.34	Picture src = src_picture ();
504	root	1.8	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
505	root	1.27	int op = PictOpSrc;
506	sf-exg	1.7
507	root	1.29	if (format->direct.alphaMask && !new_format->direct.alphaMask)
508	root	1.27	{
509			// does it have to be that complicated
510			rgba c;
511			bg.get (c);
512
513			XRenderColor rc = { c.r, c.g, c.b, 0xffff };
514	root	1.28	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
515	root	1.27
516			op = PictOpOver;
517			}
518
519			XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
520	sf-exg	1.7
521			XRenderFreePicture (dpy, src);
522			XRenderFreePicture (dpy, dst);
523
524			return img;
525			}
526	root	1.3
527	sf-exg	1.24	rxvt_img *
528			rxvt_img::blend (rxvt_img *img, double factor)
529			{
530			rxvt_img *img2 = clone ();
531			Display *dpy = s->display->dpy;
532	sf-exg	1.38	Picture src = img->src_picture ();
533	sf-exg	1.24	Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
534			Picture mask = create_xrender_mask (dpy, img->pm, False);
535
536			XRenderColor mask_c;
537
538			mask_c.alpha = float_to_component (factor);
539			mask_c.red =
540			mask_c.green =
541			mask_c.blue = 0;
542			XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
543
544			XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
545
546			XRenderFreePicture (dpy, src);
547			XRenderFreePicture (dpy, dst);
548			XRenderFreePicture (dpy, mask);
549
550			return img2;
551			}
552
553	root	1.1	#endif
554