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);

  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);
}

void
rxvt_img::blur (int rh, int rv)
{
  if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
    return;

  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));

  XRenderPictureAttributes pa;

  pa.repeat = RepeatPad;
  Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);
  Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth);
  Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa);
  XFreePixmap (dpy, tmp);

  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,
                        dst,
                        0, 0,
                        0, 0,
                        0, 0,
                        w, h);

      ::swap (src, dst);

      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,
                        src,
                        None,
                        dst,
                        0, 0,
                        0, 0,
                        0, 0,
                        w, h);
    }

  free (kernel);
  free (params);
  XRenderFreePicture (dpy, src);
  XRenderFreePicture (dpy, dst);
}

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);
}

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);
}

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;

  rgba c (0, 0, 0);

  if (channels == 4 && alpha_mask == 0)
    {
      //pix_colors[Color_bg].get (c);
      //TODO
      c.r = 0xffff; c.g = 0xc0c0; c.b = 0xcbcb;//D
      c.r >>= 8;
      c.g >>= 8;
      c.b >>= 8;
    }

  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 + c.r * (0xff - a)) / 0xff;
              g = (pixel[1] * a + c.g * (0xff - a)) / 0xff;
              b = (pixel[2] * a + c.b * (0xff - 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)
{
  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);

  XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);

  XRenderFreePicture (dpy, src);
  XRenderFreePicture (dpy, dst);

  return img;
}

#endif

Revision:	1.21
Committed:	Tue Jun 5 14:59:44 2012 UTC (12 years, 1 month ago) by sf-exg
Content type:	text/plain
Branch:	MAIN
Changes since 1.20:	+32 -0 lines
Log Message:	Implement rxvt_img::new_from_root.
#	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			return img;
71			}
72
73	root	1.1	rxvt_img::~rxvt_img ()
74			{
75	root	1.4	if (!shared)
76	root	1.1	XFreePixmap (s->display->dpy, pm);
77			}
78
79			void
80	root	1.11	rxvt_img::unshare ()
81			{
82			if (!shared)
83			return;
84
85			rxvt_img *img = clone ();
86
87			::swap (pm , img->pm);
88			::swap (shared, img->shared);
89
90			delete img;
91			}
92
93			void
94	root	1.1	rxvt_img::fill (const rxvt_color &c)
95			{
96			XGCValues gcv;
97			gcv.foreground = c;
98			GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv);
99			XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h);
100	root	1.3	XFreeGC (s->display->dpy, gc);
101	root	1.1	}
102
103	sf-exg	1.6	static void
104			get_gaussian_kernel (int radius, int width, double kernel, XFixed params)
105			{
106			double sigma = radius / 2.0;
107			double scale = sqrt (2.0 * M_PI) * sigma;
108			double sum = 0.0;
109
110			for (int i = 0; i < width; i++)
111			{
112			double x = i - width / 2;
113			kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale;
114			sum += kernel[i];
115			}
116
117			params[0] = XDoubleToFixed (width);
118			params[1] = XDoubleToFixed (1);
119
120			for (int i = 0; i < width; i++)
121			params[i+2] = XDoubleToFixed (kernel[i] / sum);
122			}
123
124	root	1.3	void
125			rxvt_img::blur (int rh, int rv)
126			{
127	sf-exg	1.6	if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
128			return;
129
130			Display *dpy = s->display->dpy;
131			int size = max (rh, rv) * 2 + 1;
132			double kernel = (double )malloc (size * sizeof (double));
133			XFixed params = (XFixed )malloc ((size + 2) * sizeof (XFixed));
134
135			XRenderPictureAttributes pa;
136
137			pa.repeat = RepeatPad;
138	root	1.17	Picture src = XRenderCreatePicture (dpy, pm , format, CPRepeat, &pa);
139	sf-exg	1.6	Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth);
140			Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa);
141			XFreePixmap (dpy, tmp);
142
143			if (kernel && params)
144			{
145			size = rh * 2 + 1;
146			get_gaussian_kernel (rh, size, kernel, params);
147
148			XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
149			XRenderComposite (dpy,
150			PictOpSrc,
151			src,
152			None,
153			dst,
154			0, 0,
155			0, 0,
156			0, 0,
157			w, h);
158
159			::swap (src, dst);
160
161			size = rv * 2 + 1;
162			get_gaussian_kernel (rv, size, kernel, params);
163			::swap (params[0], params[1]);
164
165			XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
166			XRenderComposite (dpy,
167			PictOpSrc,
168			src,
169			None,
170			dst,
171			0, 0,
172			0, 0,
173			0, 0,
174			w, h);
175			}
176
177			free (kernel);
178			free (params);
179			XRenderFreePicture (dpy, src);
180			XRenderFreePicture (dpy, dst);
181			}
182
183			static Picture
184			create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
185			{
186			Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8);
187
188			XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8);
189			XRenderPictureAttributes pa;
190			pa.repeat = True;
191			Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa);
192
193			XFreePixmap (dpy, pixmap);
194
195			return mask;
196	root	1.3	}
197
198			void
199			rxvt_img::brightness (double r, double g, double b, double a)
200			{
201	sf-exg	1.6	Display *dpy = s->display->dpy;
202			Picture src = create_xrender_mask (dpy, pm, True);
203			Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
204
205			XRenderColor mask_c;
206			mask_c.red = float_to_component (r);
207			mask_c.green = float_to_component (g);
208			mask_c.blue = float_to_component (b);
209			mask_c.alpha = float_to_component (a);
210			XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
211
212			XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
213	root	1.3	}
214
215			void
216			rxvt_img::contrast (double r, double g, double b, double a)
217	root	1.1	{
218	sf-exg	1.6	if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
219			return;
220
221			Display *dpy = s->display->dpy;
222			Picture src = create_xrender_mask (dpy, pm, True);
223			Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
224
225			XRenderColor mask_c;
226			mask_c.red = float_to_component (r);
227			mask_c.green = float_to_component (g);
228			mask_c.blue = float_to_component (b);
229			mask_c.alpha = float_to_component (a);
230			XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
231
232			XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
233	root	1.1	}
234
235	root	1.14	bool
236			rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y)
237	root	1.3	{
238	root	1.14	Display *dpy = s->display->dpy;
239
240			if (s->visual->c_class != TrueColor)
241			return false;
242
243			uint32_t red_mask, green_mask, blue_mask, alpha_mask;
244
245	sf-exg	1.18	red_mask = (uint32_t)format->direct.redMask << format->direct.red;
246			green_mask = (uint32_t)format->direct.greenMask << format->direct.green;
247			blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue;
248			alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha;
249	root	1.14
250			int width_r = ecb_popcount32 (red_mask);
251			int width_g = ecb_popcount32 (green_mask);
252			int width_b = ecb_popcount32 (blue_mask);
253			int width_a = ecb_popcount32 (alpha_mask);
254
255			if (width_r > 8 \|\| width_g > 8 \|\| width_b > 8 \|\| width_a > 8)
256			return false;
257
258			int sh_r = ecb_ctz32 (red_mask);
259			int sh_g = ecb_ctz32 (green_mask);
260			int sh_b = ecb_ctz32 (blue_mask);
261			int sh_a = ecb_ctz32 (alpha_mask);
262
263			if (width > 32767 \|\| height > 32767)
264			return false;
265
266	sf-exg	1.18	XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0,
267	root	1.14	width, height, 32, 0);
268			if (!ximage)
269			return false;
270
271			if (height > INT_MAX / ximage->bytes_per_line
272			\|\| !(ximage->data = (char )malloc (height ximage->bytes_per_line)))
273			{
274			XDestroyImage (ximage);
275			return false;
276			}
277
278			GC gc = XCreateGC (dpy, pm, 0, 0);
279
280			ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
281
282			int rowstride = gdk_pixbuf_get_rowstride (pixbuf);
283			int channels = gdk_pixbuf_get_n_channels (pixbuf);
284			unsigned char row = gdk_pixbuf_get_pixels (pixbuf) + src_y rowstride + src_x * channels;
285			char *line = ximage->data;
286
287			rgba c (0, 0, 0);
288
289			if (channels == 4 && alpha_mask == 0)
290			{
291			//pix_colors[Color_bg].get (c);
292			//TODO
293	root	1.15	c.r = 0xffff; c.g = 0xc0c0; c.b = 0xcbcb;//D
294	root	1.14	c.r >>= 8;
295			c.g >>= 8;
296			c.b >>= 8;
297			}
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			r = (pixel[0] * a + c.r * (0xff - a)) / 0xff;
311			g = (pixel[1] * a + c.g * (0xff - a)) / 0xff;
312			b = (pixel[2] * a + c.b * (0xff - a)) / 0xff;
313			}
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	sf-exg	1.7	rxvt_img::convert_to (XRenderPictFormat *new_format)
431			{
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	sf-exg	1.7
438			XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
439
440			XRenderFreePicture (dpy, src);
441			XRenderFreePicture (dpy, dst);
442
443			return img;
444			}
445	root	1.3
446	root	1.1	#endif
447