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 (12 years ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.32:	+33 -10 lines
Log Message:	* empty log message *
#	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), refcnt(0)
10	{
11	}
12
13	rxvt_img::rxvt_img (const rxvt_img &img)
14	: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), refcnt(img.refcnt)
15	{
16	if (refcnt)
17	++*refcnt;
18	}
19
20	#if 0
21	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height, Pixmap pixmap)
22	: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap)
23	{
24	}
25	#endif
26
27	rxvt_img *
28	rxvt_img::new_from_root (rxvt_screen *s)
29	{
30	Display *dpy = s->display->dpy;
31	unsigned int root_pm_w, root_pm_h;
32	Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);
33	if (root_pixmap == None)
34	root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);
35
36	if (root_pixmap == None)
37	return 0;
38
39	Window wdummy;
40	int idummy;
41	unsigned int udummy;
42
43	if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
44	return 0;
45
46	rxvt_img *img = new rxvt_img (
47	s,
48	XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
49	0,
50	0,
51	root_pm_w,
52	root_pm_h
53	);
54
55	img->pm = root_pixmap;
56
57	return img;
58	}
59
60	rxvt_img *
61	rxvt_img::new_from_file (rxvt_screen s, const char filename)
62	{
63	GError *err = 0;
64	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
65
66	if (!pb)
67	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
68
69	rxvt_img *img = new rxvt_img (
70	s,
71	XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
72	0,
73	0,
74	gdk_pixbuf_get_width (pb),
75	gdk_pixbuf_get_height (pb)
76	);
77	img->alloc ();
78	img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);
79
80	g_object_unref (pb);
81
82	return img;
83	}
84
85	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	rxvt_img::~rxvt_img ()
98	{
99	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	}
108
109	void
110	rxvt_img::unshare ()
111	{
112	if (refcnt && *refcnt == 1)
113	return;
114
115	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
120	destroy ();
121
122	pm = pm2;
123	refcnt = new int (1);
124	}
125
126	void
127	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	XFreeGC (s->display->dpy, gc);
134	}
135
136	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	rxvt_img *
158	rxvt_img::blur (int rh, int rv)
159	{
160	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
161	return clone ();
162
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	rxvt_img *img = new rxvt_img (s, format, x, y, w, h);
168	img->alloc ();
169
170	XRenderPictureAttributes pa;
171
172	pa.repeat = RepeatPad;
173	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
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	tmp,
191	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	tmp,
204	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	XRenderFreePicture (dpy, tmp);
217
218	return img;
219	}
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	}
235
236	void
237	rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
238	{
239	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	mask_c.red = r;
245	mask_c.green = g;
246	mask_c.blue = b;
247	mask_c.alpha = a;
248	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
252	XRenderFreePicture (dpy, src);
253	XRenderFreePicture (dpy, dst);
254	}
255
256	void
257	rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
258	{
259	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	mask_c.red = r;
268	mask_c.green = g;
269	mask_c.blue = b;
270	mask_c.alpha = a;
271	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
275	XRenderFreePicture (dpy, src);
276	XRenderFreePicture (dpy, dst);
277	}
278
279	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	{
282	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	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
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	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
311	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	r = pixel[0] * a / 0xff;
343	g = pixel[1] * a / 0xff;
344	b = pixel[2] * a / 0xff;
345	}
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	}
375
376	rxvt_img *
377	rxvt_img::clone ()
378	{
379	return new rxvt_img (*this);
380	}
381
382	rxvt_img *
383	rxvt_img::reify ()
384	{
385	rxvt_img *img = new rxvt_img (s, format, 0, 0, w, h);
386	img->alloc ();
387
388	// 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	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
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
402	return img;
403	}
404
405	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
415	return img;
416	}
417
418	rxvt_img *
419	rxvt_img::transform (int new_width, int new_height, double matrix[9])
420	{
421	rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height);
422	img->alloc ();
423
424	Display *dpy = s->display->dpy;
425	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
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	xfrm.matrix [0][2] += XDoubleToFixed (x);//TODO
437	xfrm.matrix [0][3] += XDoubleToFixed (y);
438
439	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
440	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	}
448
449	rxvt_img *
450	rxvt_img::scale (int new_width, int new_height)
451	{
452	double matrix[9] = {
453	w / (double)new_width, 0, 0,
454	0, h / (double)new_height, 0,
455	0, 0, 1
456	};
457
458	return transform (new_width, new_height, matrix);
459	}
460
461	rxvt_img *
462	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
463	{
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	return transform (new_width, new_height, matrix);
474	}
475
476	rxvt_img *
477	rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg)
478	{
479	if (new_format == format)
480	return clone ();
481
482	rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h);
483	img->alloc ();
484
485	Display *dpy = s->display->dpy;
486	Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
487	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
488	int op = PictOpSrc;
489
490	if (format->direct.alphaMask && !new_format->direct.alphaMask)
491	{
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	XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
498
499	op = PictOpOver;
500	}
501
502	XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
503
504	XRenderFreePicture (dpy, src);
505	XRenderFreePicture (dpy, dst);
506
507	return img;
508	}
509
510	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	#endif
537