rxvt-unicode/src/rxvtimg.C

#include <math.h>
#include "../config.h"
#include "rxvt.h"

#if HAVE_IMG

#define float_to_component(d) ((d) * 65535.99)

rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height)
: s(screen), w(width), h(height), format(format), shared(false)
{
  pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
}

rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap)
: s(screen), pm(pixmap), w(width), h(height), format(format), shared(false)
{
}

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,
     root_pixmap
  );

  img->shared = true;

  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->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);

  g_object_unref (pb);

  return img;
}

rxvt_img::~rxvt_img ()
{
  if (!shared)
    XFreePixmap (s->display->dpy, pm);
}

void
rxvt_img::unshare ()
{
  if (!shared)
    return;

  rxvt_img *img = clone ();

  ::swap (pm    , img->pm);
  ::swap (shared, img->shared);

  delete img;
}

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);

  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 (double r, double g, double b, double 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   = float_to_component (r);
  mask_c.green = float_to_component (g);
  mask_c.blue  = float_to_component (b);
  mask_c.alpha = float_to_component (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 (double r, double g, double b, double 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   = float_to_component (r);
  mask_c.green = float_to_component (g);
  mask_c.blue  = float_to_component (b);
  mask_c.alpha = float_to_component (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 ()
{
  rxvt_img *img = new rxvt_img (s, format, w, h);

  GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
  XCopyArea (s->display->dpy, pm, img->pm, gc, 0, 0, w, h, 0, 0);
  XFreeGC (s->display->dpy, gc);

  return img;
}

rxvt_img *
rxvt_img::sub_rect (int x, int y, int width, int height, int repeat)
{
  rxvt_img *img = new rxvt_img (s, format, width, height);

  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], int repeat)
{
  rxvt_img *img = new rxvt_img (s, format, new_width, new_height);

  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, int repeat)
{
  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, repeat);
}

rxvt_img *
rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg)
{
  rxvt_img *img = new rxvt_img (s, new_format, w, h);

  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;

  printf ("fa %x,%x fb %x,%x\n", f->direct.alpha, f->direct.alpha_mask, new_format->direct.alpha, new_format->direct.alpha_mask);//D

  if (f->direct.alpha && !new_format->direct.alpha)
    {
      // 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, &mask_c, 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:	1.27
Committed:	Wed Jun 6 20:20:23 2012 UTC (11 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.26:	+18 -2 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	sf-exg	1.6	#include <math.h>
2	root	1.1	#include "../config.h"
3			#include "rxvt.h"
4
5			#if HAVE_IMG
6
7	sf-exg	1.6	#define float_to_component(d) ((d) * 65535.99)
8
9	root	1.3	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height)
10	root	1.4	: s(screen), w(width), h(height), format(format), shared(false)
11	root	1.1	{
12	root	1.3	pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
13	root	1.1	}
14
15	root	1.3	rxvt_img::rxvt_img (rxvt_screen screen, XRenderPictFormat format, int width, int height, Pixmap pixmap)
16	root	1.4	: s(screen), pm(pixmap), w(width), h(height), format(format), shared(false)
17	root	1.1	{
18			}
19
20	root	1.4	rxvt_img *
21	sf-exg	1.21	rxvt_img::new_from_root (rxvt_screen *s)
22			{
23			Display *dpy = s->display->dpy;
24			unsigned int root_pm_w, root_pm_h;
25			Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);
26			if (root_pixmap == None)
27			root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);
28
29			if (root_pixmap == None)
30			return 0;
31
32			Window wdummy;
33			int idummy;
34			unsigned int udummy;
35
36			if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
37			return 0;
38
39			rxvt_img *img = new rxvt_img (
40			s,
41			XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
42			root_pm_w,
43			root_pm_h,
44			root_pixmap
45			);
46
47			img->shared = true;
48
49			return img;
50			}
51
52			rxvt_img *
53	root	1.4	rxvt_img::new_from_file (rxvt_screen s, const char filename)
54			{
55	root	1.11	GError *err = 0;
56	root	1.4	GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
57
58			if (!pb)
59	root	1.11	rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
60	root	1.4
61			rxvt_img *img = new rxvt_img (
62			s,
63			XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24),
64			gdk_pixbuf_get_width (pb),
65			gdk_pixbuf_get_height (pb)
66			);
67
68	root	1.14	img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0);
69	root	1.4
70	sf-exg	1.26	g_object_unref (pb);
71
72	root	1.4	return img;
73			}
74
75	root	1.1	rxvt_img::~rxvt_img ()
76			{
77	root	1.4	if (!shared)
78	root	1.1	XFreePixmap (s->display->dpy, pm);
79			}
80
81			void
82	root	1.11	rxvt_img::unshare ()
83			{
84			if (!shared)
85			return;
86
87			rxvt_img *img = clone ();
88
89			::swap (pm , img->pm);
90			::swap (shared, img->shared);
91
92			delete img;
93			}
94
95			void
96	root	1.1	rxvt_img::fill (const rxvt_color &c)
97			{
98			XGCValues gcv;
99			gcv.foreground = c;
100			GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
101			XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
102	root	1.3	XFreeGC (s->display->dpy, gc);
103	root	1.1	}
104
105	sf-exg	1.6	static void
106			get_gaussian_kernel (int radius, int width, double kernel, XFixed params)
107			{
108			double sigma = radius / 2.0;
109			double scale = sqrt (2.0 * M_PI) * sigma;
110			double sum = 0.0;
111
112			for (int i = 0; i < width; i++)
113			{
114			double x = i - width / 2;
115			kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
116			sum += kernel[i];
117			}
118
119			params[0] = XDoubleToFixed (width);
120			params[1] = XDoubleToFixed (1);
121
122			for (int i = 0; i < width; i++)
123			params[i+2] = XDoubleToFixed (kernel[i] / sum);
124			}
125
126	sf-exg	1.22	rxvt_img *
127	root	1.3	rxvt_img::blur (int rh, int rv)
128			{
129	sf-exg	1.6	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
130	sf-exg	1.22	return clone ();
131	sf-exg	1.6
132			Display *dpy = s->display->dpy;
133			int size = max (rh, rv) * 2 + 1;
134			double kernel = (double )malloc (size * sizeof (double));
135			XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
136	sf-exg	1.22	rxvt_img *img = new rxvt_img (s, format, w, h);
137	sf-exg	1.6
138			XRenderPictureAttributes pa;
139
140			pa.repeat = RepeatPad;
141	sf-exg	1.22	Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);
142			Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa);
143
144			Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
145			Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
146			XFreePixmap (dpy, tmp_pm);
147	sf-exg	1.6
148			if (kernel && params)
149			{
150			size = rh * 2 + 1;
151			get_gaussian_kernel (rh, size, kernel, params);
152
153			XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
154			XRenderComposite (dpy,
155			PictOpSrc,
156			src,
157			None,
158	sf-exg	1.22	tmp,
159	sf-exg	1.6	0, 0,
160			0, 0,
161			0, 0,
162			w, h);
163
164			size = rv * 2 + 1;
165			get_gaussian_kernel (rv, size, kernel, params);
166			::swap (params[0], params[1]);
167
168			XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
169			XRenderComposite (dpy,
170			PictOpSrc,
171	sf-exg	1.22	tmp,
172	sf-exg	1.6	None,
173			dst,
174			0, 0,
175			0, 0,
176			0, 0,
177			w, h);
178			}
179
180			free (kernel);
181			free (params);
182			XRenderFreePicture (dpy, src);
183			XRenderFreePicture (dpy, dst);
184	sf-exg	1.22	XRenderFreePicture (dpy, tmp);
185
186			return img;
187	sf-exg	1.6	}
188
189			static Picture
190			create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
191			{
192			Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
193
194			XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
195			XRenderPictureAttributes pa;
196			pa.repeat = True;
197			Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
198
199			XFreePixmap (dpy, pixmap);
200
201			return mask;
202	root	1.3	}
203
204			void
205			rxvt_img::brightness (double r, double g, double b, double a)
206			{
207	sf-exg	1.6	Display *dpy = s->display->dpy;
208			Picture src = create_xrender_mask (dpy, pm, True);
209			Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
210
211			XRenderColor mask_c;
212			mask_c.red = float_to_component (r);
213			mask_c.green = float_to_component (g);
214			mask_c.blue = float_to_component (b);
215			mask_c.alpha = float_to_component (a);
216			XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
217
218			XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
219	sf-exg	1.23
220			XRenderFreePicture (dpy, src);
221			XRenderFreePicture (dpy, dst);
222	root	1.3	}
223
224			void
225			rxvt_img::contrast (double r, double g, double b, double a)
226	root	1.1	{
227	sf-exg	1.6	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
228			return;
229
230			Display *dpy = s->display->dpy;
231			Picture src = create_xrender_mask (dpy, pm, True);
232			Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
233
234			XRenderColor mask_c;
235			mask_c.red = float_to_component (r);
236			mask_c.green = float_to_component (g);
237			mask_c.blue = float_to_component (b);
238			mask_c.alpha = float_to_component (a);
239			XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
240
241			XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
242	sf-exg	1.23
243			XRenderFreePicture (dpy, src);
244			XRenderFreePicture (dpy, dst);
245	root	1.1	}
246
247	root	1.14	bool
248			rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
249	root	1.3	{
250	root	1.14	Display *dpy = s->display->dpy;
251
252			if (s->visual->c_class != TrueColor)
253			return false;
254
255			uint32_t red_mask, green_mask, blue_mask, alpha_mask;
256
257	sf-exg	1.18	red_mask = (uint32_t)format->direct.redMask << format->direct.red;
258			green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
259			blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
260			alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
261	root	1.14
262			int width_r = ecb_popcount32 (red_mask);
263			int width_g = ecb_popcount32 (green_mask);
264			int width_b = ecb_popcount32 (blue_mask);
265			int width_a = ecb_popcount32 (alpha_mask);
266
267			if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
268			return false;
269
270			int sh_r = ecb_ctz32 (red_mask);
271			int sh_g = ecb_ctz32 (green_mask);
272			int sh_b = ecb_ctz32 (blue_mask);
273			int sh_a = ecb_ctz32 (alpha_mask);
274
275			if (width > 32767 \|\| height > 32767)
276			return false;
277
278	sf-exg	1.18	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
279	root	1.14	width, height, 32, 0);
280			if (!ximage)
281			return false;
282
283			if (height > INT_MAX / ximage->bytes_per_line
284			\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
285			{
286			XDestroyImage (ximage);
287			return false;
288			}
289
290			GC gc = XCreateGC (dpy, pm, 0, 0);
291
292			ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
293
294			int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
295			int channels = gdk_pixbuf_get_n_channels (pixbuf);
296			unsigned char row = gdk_pixbuf_get_pixels (pixbuf) + src_y rowstride + src_x * channels;
297			char *line = ximage->data;
298
299			for (int y = 0; y < height; y++)
300			{
301			for (int x = 0; x < width; x++)
302			{
303			unsigned char pixel = row + x channels;
304			uint32_t value;
305			unsigned char r, g, b, a;
306
307			if (channels == 4)
308			{
309			a = pixel[3];
310	sf-exg	1.25	r = pixel[0] * a / 0xff;
311			g = pixel[1] * a / 0xff;
312			b = pixel[2] * a / 0xff;
313	root	1.14	}
314			else
315			{
316			a = 0xff;
317			r = pixel[0];
318			g = pixel[1];
319			b = pixel[2];
320			}
321
322			value = ((r >> (8 - width_r)) << sh_r)
323			\| ((g >> (8 - width_g)) << sh_g)
324			\| ((b >> (8 - width_b)) << sh_b)
325			\| ((a >> (8 - width_a)) << sh_a);
326
327			if (ximage->bits_per_pixel == 32)
328			((uint32_t *)line)[x] = value;
329			else
330			XPutPixel (ximage, x, y, value);
331			}
332
333			row += rowstride;
334			line += ximage->bytes_per_line;
335			}
336
337			XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height);
338			XDestroyImage (ximage);
339			XFreeGC (dpy, gc);
340
341			return true;
342	root	1.3	}
343
344			rxvt_img *
345	root	1.11	rxvt_img::clone ()
346	root	1.3	{
347	root	1.19	rxvt_img *img = new rxvt_img (s, format, w, h);
348
349	root	1.3	GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
350	root	1.19	XCopyArea (s->display->dpy, pm, img->pm, gc, 0, 0, w, h, 0, 0);
351	root	1.3	XFreeGC (s->display->dpy, gc);
352	root	1.20
353			return img;
354	root	1.3	}
355
356			rxvt_img *
357	root	1.19	rxvt_img::sub_rect (int x, int y, int width, int height, int repeat)
358			{
359			rxvt_img *img = new rxvt_img (s, format, width, height);
360
361			Display *dpy = s->display->dpy;
362			XRenderPictureAttributes pa;
363			pa.repeat = repeat;
364			Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
365			Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
366
367			XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, width, height);
368
369			XRenderFreePicture (dpy, src);
370			XRenderFreePicture (dpy, dst);
371
372			return img;
373			}
374
375			rxvt_img *
376			rxvt_img::transform (int new_width, int new_height, double matrix[9], int repeat)
377	root	1.3	{
378	root	1.12	rxvt_img *img = new rxvt_img (s, format, new_width, new_height);
379
380			Display *dpy = s->display->dpy;
381	root	1.13	XRenderPictureAttributes pa;
382			pa.repeat = repeat;
383			Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
384			Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
385	root	1.12
386			XTransform xfrm;
387
388			for (int i = 0; i < 3; ++i)
389			for (int j = 0; j < 3; ++j)
390			xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
391
392	root	1.17	XRenderSetPictureFilter (dpy, src, "good", 0, 0);
393	root	1.12	XRenderSetPictureTransform (dpy, src, &xfrm);
394			XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
395
396			XRenderFreePicture (dpy, src);
397			XRenderFreePicture (dpy, dst);
398
399			return img;
400	root	1.3	}
401
402			rxvt_img *
403			rxvt_img::scale (int new_width, int new_height)
404			{
405	root	1.11	double matrix[9] = {
406	root	1.16	w / (double)new_width, 0, 0,
407			0, h / (double)new_height, 0,
408	root	1.11	0, 0, 1
409			};
410
411	root	1.19	return transform (new_width, new_height, matrix);
412	root	1.3	}
413
414	sf-exg	1.7	rxvt_img *
415	root	1.19	rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi, int repeat)
416	root	1.17	{
417			double s = sin (phi);
418			double c = cos (phi);
419
420			double matrix[9] = {
421			c, -s, -c * x + s * y + x,
422			s, c, -s * x - c * y + y,
423			0, 0, 1
424			};
425
426	root	1.19	return transform (new_width, new_height, matrix, repeat);
427	root	1.17	}
428
429			rxvt_img *
430	root	1.27	rxvt_img::convert_to (XRenderPictFormat *new_format, const rxvt_color &bg)
431	sf-exg	1.7	{
432	sf-exg	1.10	rxvt_img *img = new rxvt_img (s, new_format, w, h);
433	root	1.9
434	sf-exg	1.7	Display *dpy = s->display->dpy;
435	root	1.12	Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
436	root	1.8	Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
437	root	1.27	int op = PictOpSrc;
438	sf-exg	1.7
439	root	1.27	printf ("fa %x,%x fb %x,%x\n", f->direct.alpha, f->direct.alpha_mask, new_format->direct.alpha, new_format->direct.alpha_mask);//D
440
441			if (f->direct.alpha && !new_format->direct.alpha)
442			{
443			// does it have to be that complicated
444			rgba c;
445			bg.get (c);
446
447			XRenderColor rc = { c.r, c.g, c.b, 0xffff };
448
449			XRenderFillRectangle (dpy, PictOpSrc, dst, &mask_c, 0, 0, w, h);
450
451			op = PictOpOver;
452			}
453
454			XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
455	sf-exg	1.7
456			XRenderFreePicture (dpy, src);
457			XRenderFreePicture (dpy, dst);
458
459			return img;
460			}
461	root	1.3
462	sf-exg	1.24	rxvt_img *
463			rxvt_img::blend (rxvt_img *img, double factor)
464			{
465			rxvt_img *img2 = clone ();
466			Display *dpy = s->display->dpy;
467			Picture src = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
468			Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
469			Picture mask = create_xrender_mask (dpy, img->pm, False);
470
471			XRenderColor mask_c;
472
473			mask_c.alpha = float_to_component (factor);
474			mask_c.red =
475			mask_c.green =
476			mask_c.blue = 0;
477			XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
478
479			XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
480
481			XRenderFreePicture (dpy, src);
482			XRenderFreePicture (dpy, dst);
483			XRenderFreePicture (dpy, mask);
484
485			return img2;
486			}
487
488	root	1.1	#endif
489