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 (12 years ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.31:	+50 -20 lines
Log Message:	preliminary recounting
#	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	1.3	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height)
8	root	1.32	: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal),
9			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_pm_w,
50	root	1.32	root_pm_h
51	sf-exg	1.21	);
52
53	root	1.32	img->pm = root_pixmap;
54	sf-exg	1.21
55			return img;
56			}
57
58			rxvt_img *
59	root	1.4	rxvt_img::new_from_file (rxvt_screen s, const char filename)
60			{
61	root	1.11	GError *err = 0;
62	root	1.4	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
63
64			if (!pb)
65	root	1.11	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
66	root	1.4
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	root	1.32	img->alloc ();
74	root	1.14	img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);
75	root	1.4
76	sf-exg	1.26	g_object_unref (pb);
77
78	root	1.4	return img;
79			}
80
81	root	1.32	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	root	1.1	rxvt_img::~rxvt_img ()
94			{
95	root	1.32	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	root	1.1	}
104
105			void
106	root	1.11	rxvt_img::unshare ()
107			{
108	root	1.32	if (refcnt && *refcnt == 1)
109	root	1.11	return;
110
111	root	1.32	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	root	1.11
116	root	1.32	destroy ();
117	root	1.11
118	root	1.32	pm = pm2;
119			refcnt = new int (1);
120	root	1.11	}
121
122			void
123	root	1.1	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	root	1.3	XFreeGC (s->display->dpy, gc);
130	root	1.1	}
131
132	sf-exg	1.6	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	sf-exg	1.22	rxvt_img *
154	root	1.3	rxvt_img::blur (int rh, int rv)
155			{
156	sf-exg	1.6	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
157	sf-exg	1.22	return clone ();
158	sf-exg	1.6
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	sf-exg	1.22	rxvt_img *img = new rxvt_img (s, format, w, h);
164	root	1.32	img->alloc ();
165	sf-exg	1.6
166			XRenderPictureAttributes pa;
167
168			pa.repeat = RepeatPad;
169	sf-exg	1.22	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	sf-exg	1.6
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	sf-exg	1.22	tmp,
187	sf-exg	1.6	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	sf-exg	1.22	tmp,
200	sf-exg	1.6	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	sf-exg	1.22	XRenderFreePicture (dpy, tmp);
213
214			return img;
215	sf-exg	1.6	}
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	root	1.3	}
231
232			void
233	sf-exg	1.31	rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
234	root	1.3	{
235	sf-exg	1.6	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	sf-exg	1.31	mask_c.red = r;
241			mask_c.green = g;
242			mask_c.blue = b;
243			mask_c.alpha = a;
244	sf-exg	1.6	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	sf-exg	1.23
248			XRenderFreePicture (dpy, src);
249			XRenderFreePicture (dpy, dst);
250	root	1.3	}
251
252			void
253	sf-exg	1.31	rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
254	root	1.1	{
255	sf-exg	1.6	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	sf-exg	1.31	mask_c.red = r;
264			mask_c.green = g;
265			mask_c.blue = b;
266			mask_c.alpha = a;
267	sf-exg	1.6	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	sf-exg	1.23
271			XRenderFreePicture (dpy, src);
272			XRenderFreePicture (dpy, dst);
273	root	1.1	}
274
275	root	1.14	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	root	1.3	{
278	root	1.14	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	sf-exg	1.18	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	root	1.14
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	sf-exg	1.18	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
307	root	1.14	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	sf-exg	1.25	r = pixel[0] * a / 0xff;
339			g = pixel[1] * a / 0xff;
340			b = pixel[2] * a / 0xff;
341	root	1.14	}
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	root	1.3	}
371
372			rxvt_img *
373	root	1.11	rxvt_img::clone ()
374	root	1.3	{
375	root	1.32	return new rxvt_img (*this);
376	root	1.3	}
377
378			rxvt_img *
379	root	1.30	rxvt_img::sub_rect (int x, int y, int width, int height)
380	root	1.19	{
381			rxvt_img *img = new rxvt_img (s, format, width, height);
382	root	1.32	img->alloc ();
383	root	1.19
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	root	1.30	rxvt_img::transform (int new_width, int new_height, double matrix[9])
400	root	1.3	{
401	root	1.12	rxvt_img *img = new rxvt_img (s, format, new_width, new_height);
402	root	1.32	img->alloc ();
403	root	1.12
404			Display *dpy = s->display->dpy;
405	root	1.13	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	root	1.12
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	root	1.17	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
417	root	1.12	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	root	1.3	}
425
426			rxvt_img *
427			rxvt_img::scale (int new_width, int new_height)
428			{
429	root	1.11	double matrix[9] = {
430	root	1.16	w / (double)new_width, 0, 0,
431			0, h / (double)new_height, 0,
432	root	1.11	0, 0, 1
433			};
434
435	root	1.19	return transform (new_width, new_height, matrix);
436	root	1.3	}
437
438	sf-exg	1.7	rxvt_img *
439	root	1.30	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
440	root	1.17	{
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	root	1.30	return transform (new_width, new_height, matrix);
451	root	1.17	}
452
453			rxvt_img *
454	root	1.27	rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg)
455	sf-exg	1.7	{
456	root	1.32	if (new_format == format)
457			return clone ();
458
459	sf-exg	1.10	rxvt_img *img = new rxvt_img (s, new_format, w, h);
460	root	1.32	img->alloc ();
461	root	1.9
462	sf-exg	1.7	Display *dpy = s->display->dpy;
463	root	1.12	Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
464	root	1.8	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
465	root	1.27	int op = PictOpSrc;
466	sf-exg	1.7
467	root	1.29	if (format->direct.alphaMask && !new_format->direct.alphaMask)
468	root	1.27	{
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	root	1.28	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
475	root	1.27
476			op = PictOpOver;
477			}
478
479			XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
480	sf-exg	1.7
481			XRenderFreePicture (dpy, src);
482			XRenderFreePicture (dpy, dst);
483
484			return img;
485			}
486	root	1.3
487	sf-exg	1.24	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	root	1.1	#endif
514