| 1 |
#include <string.h> |
| 2 |
#include <math.h> |
| 3 |
#include "../config.h" |
| 4 |
#include "rxvt.h" |
| 5 |
|
| 6 |
#if HAVE_IMG |
| 7 |
|
| 8 |
typedef rxvt_img::nv nv; |
| 9 |
|
| 10 |
struct mat3x3 |
| 11 |
{ |
| 12 |
nv v[3][3]; |
| 13 |
|
| 14 |
mat3x3 () |
| 15 |
{ |
| 16 |
} |
| 17 |
|
| 18 |
mat3x3 (nv matrix[3][3]) |
| 19 |
{ |
| 20 |
memcpy (v, matrix, sizeof (v)); |
| 21 |
} |
| 22 |
|
| 23 |
mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33) |
| 24 |
{ |
| 25 |
v[0][0] = v11; v[0][1] = v12; v[0][2] = v13; |
| 26 |
v[1][0] = v21; v[1][1] = v22; v[1][2] = v23; |
| 27 |
v[2][0] = v31; v[2][1] = v32; v[2][2] = v33; |
| 28 |
} |
| 29 |
|
| 30 |
mat3x3 invert (); |
| 31 |
|
| 32 |
nv *operator [](int i) { return &v[i][0]; } |
| 33 |
const nv *operator [](int i) const { return &v[i][0]; } |
| 34 |
|
| 35 |
// quite inefficient, hopefully gcc pulls the w calc out of any loops |
| 36 |
nv apply1 (int i, nv x, nv y) |
| 37 |
{ |
| 38 |
mat3x3 &m = *this; |
| 39 |
|
| 40 |
nv v = m[i][0] * x + m[i][1] * y + m[i][2]; |
| 41 |
nv w = m[2][0] * x + m[2][1] * y + m[2][2]; |
| 42 |
|
| 43 |
return v * (1. / w); |
| 44 |
} |
| 45 |
|
| 46 |
static mat3x3 translate (nv x, nv y); |
| 47 |
}; |
| 48 |
|
| 49 |
mat3x3 |
| 50 |
mat3x3::invert () |
| 51 |
{ |
| 52 |
mat3x3 &m = *this; |
| 53 |
mat3x3 inv; |
| 54 |
|
| 55 |
nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2]; |
| 56 |
nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1]; |
| 57 |
nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2]; |
| 58 |
|
| 59 |
nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2); |
| 60 |
|
| 61 |
inv[0][0] = invdet * s0; |
| 62 |
inv[0][1] = invdet * s1; |
| 63 |
inv[0][2] = invdet * s2; |
| 64 |
|
| 65 |
inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]); |
| 66 |
inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]); |
| 67 |
inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]); |
| 68 |
|
| 69 |
inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]); |
| 70 |
inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]); |
| 71 |
inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]); |
| 72 |
|
| 73 |
return inv; |
| 74 |
} |
| 75 |
|
| 76 |
static mat3x3 |
| 77 |
operator *(const mat3x3 &a, const mat3x3 &b) |
| 78 |
{ |
| 79 |
mat3x3 r; |
| 80 |
|
| 81 |
for (int i = 0; i < 3; ++i) |
| 82 |
for (int j = 0; j < 3; ++j) |
| 83 |
r[i][j] = a[i][0] * b[0][j] |
| 84 |
+ a[i][1] * b[1][j] |
| 85 |
+ a[i][2] * b[2][j]; |
| 86 |
|
| 87 |
return r; |
| 88 |
} |
| 89 |
|
| 90 |
mat3x3 |
| 91 |
mat3x3::translate (nv x, nv y) |
| 92 |
{ |
| 93 |
return mat3x3 ( |
| 94 |
1, 0, x, |
| 95 |
0, 1, y, |
| 96 |
0, 0, 1 |
| 97 |
); |
| 98 |
} |
| 99 |
|
| 100 |
#if 0 |
| 101 |
struct pict |
| 102 |
{ |
| 103 |
Display *dpy; |
| 104 |
Picture pic; |
| 105 |
|
| 106 |
operator Picture () const |
| 107 |
{ |
| 108 |
return pic; |
| 109 |
} |
| 110 |
|
| 111 |
pict () |
| 112 |
: pic (0) |
| 113 |
{ |
| 114 |
} |
| 115 |
|
| 116 |
pict (rxvt_img *img, XRenderPictFormat *format = 0) |
| 117 |
: dpy (img->s->display->dpy) |
| 118 |
{ |
| 119 |
XRenderPictureAttributes pa; |
| 120 |
pa.repeat = img->repeat; |
| 121 |
pic = XRenderCreatePicture (dpy, img->pm, format ? format : img->format, CPRepeat, &pa); |
| 122 |
} |
| 123 |
|
| 124 |
~pict () |
| 125 |
{ |
| 126 |
if (pic) |
| 127 |
XRenderFreePicture (dpy, pic); |
| 128 |
} |
| 129 |
}; |
| 130 |
#endif |
| 131 |
|
| 132 |
static XRenderPictFormat * |
| 133 |
find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
| 134 |
{ |
| 135 |
if (format->direct.alphaMask) |
| 136 |
return format; // already has alpha |
| 137 |
|
| 138 |
// try to find a suitable alpha format, one bit alpha is enough for our purposes |
| 139 |
if (format->type == PictTypeDirect) |
| 140 |
for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
| 141 |
if (f->direct.alphaMask |
| 142 |
&& f->type == PictTypeDirect |
| 143 |
&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
| 144 |
&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
| 145 |
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
| 146 |
return f; |
| 147 |
|
| 148 |
// should be a very good fallback |
| 149 |
return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
| 150 |
} |
| 151 |
|
| 152 |
rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) |
| 153 |
: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), |
| 154 |
pm(0), ref(0) |
| 155 |
{ |
| 156 |
} |
| 157 |
|
| 158 |
rxvt_img::rxvt_img (const rxvt_img &img) |
| 159 |
: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), ref(img.ref) |
| 160 |
{ |
| 161 |
++ref->cnt; |
| 162 |
} |
| 163 |
|
| 164 |
rxvt_img * |
| 165 |
rxvt_img::new_from_root (rxvt_screen *s) |
| 166 |
{ |
| 167 |
Display *dpy = s->display->dpy; |
| 168 |
unsigned int root_pm_w, root_pm_h; |
| 169 |
Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]); |
| 170 |
if (root_pixmap == None) |
| 171 |
root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]); |
| 172 |
|
| 173 |
if (root_pixmap == None) |
| 174 |
return 0; |
| 175 |
|
| 176 |
Window wdummy; |
| 177 |
int idummy; |
| 178 |
unsigned int udummy; |
| 179 |
|
| 180 |
if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy)) |
| 181 |
return 0; |
| 182 |
|
| 183 |
rxvt_img *img = new rxvt_img ( |
| 184 |
s, |
| 185 |
XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)), |
| 186 |
0, |
| 187 |
0, |
| 188 |
root_pm_w, |
| 189 |
root_pm_h |
| 190 |
); |
| 191 |
|
| 192 |
img->pm = root_pixmap; |
| 193 |
img->ref = new pixref (root_pm_w, root_pm_h); |
| 194 |
img->ref->ours = false; |
| 195 |
|
| 196 |
return img; |
| 197 |
} |
| 198 |
|
| 199 |
# if HAVE_PIXBUF |
| 200 |
|
| 201 |
rxvt_img * |
| 202 |
rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
| 203 |
{ |
| 204 |
Display *dpy = s->display->dpy; |
| 205 |
|
| 206 |
int width = gdk_pixbuf_get_width (pb); |
| 207 |
int height = gdk_pixbuf_get_height (pb); |
| 208 |
|
| 209 |
if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
| 210 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
| 211 |
|
| 212 |
// since we require rgb24/argb32 formats from xrender we assume |
| 213 |
// that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
| 214 |
|
| 215 |
int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
| 216 |
|
| 217 |
XImage xi; |
| 218 |
|
| 219 |
xi.width = width; |
| 220 |
xi.height = height; |
| 221 |
xi.xoffset = 0; |
| 222 |
xi.format = ZPixmap; |
| 223 |
xi.byte_order = ImageByteOrder (dpy); |
| 224 |
xi.bitmap_unit = 0; //XY only, unused |
| 225 |
xi.bitmap_bit_order = 0; //XY only, unused |
| 226 |
xi.bitmap_pad = BitmapPad (dpy); |
| 227 |
xi.depth = 32; |
| 228 |
xi.bytes_per_line = 0; |
| 229 |
xi.bits_per_pixel = 32; //Z only |
| 230 |
xi.red_mask = 0x00000000; //Z only, unused |
| 231 |
xi.green_mask = 0x00000000; //Z only, unused |
| 232 |
xi.blue_mask = 0x00000000; //Z only, unused |
| 233 |
xi.obdata = 0; // probably unused |
| 234 |
|
| 235 |
bool byte_order_mismatch = byte_order != xi.byte_order; |
| 236 |
|
| 237 |
if (!XInitImage (&xi)) |
| 238 |
rxvt_fatal ("unable to initialise ximage, please report.\n"); |
| 239 |
|
| 240 |
if (height > INT_MAX / xi.bytes_per_line) |
| 241 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); |
| 242 |
|
| 243 |
xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); |
| 244 |
|
| 245 |
int rowstride = gdk_pixbuf_get_rowstride (pb); |
| 246 |
bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb); |
| 247 |
unsigned char *row = gdk_pixbuf_get_pixels (pb); |
| 248 |
|
| 249 |
char *line = xi.data; |
| 250 |
|
| 251 |
for (int y = 0; y < height; y++) |
| 252 |
{ |
| 253 |
unsigned char *src = row; |
| 254 |
uint32_t *dst = (uint32_t *)line; |
| 255 |
|
| 256 |
if (!pb_has_alpha) |
| 257 |
for (int x = 0; x < width; x++) |
| 258 |
{ |
| 259 |
uint8_t r = *src++; |
| 260 |
uint8_t g = *src++; |
| 261 |
uint8_t b = *src++; |
| 262 |
|
| 263 |
uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b; |
| 264 |
|
| 265 |
if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
| 266 |
v = ecb_bswap32 (v); |
| 267 |
|
| 268 |
*dst++ = v; |
| 269 |
} |
| 270 |
else |
| 271 |
for (int x = 0; x < width; x++) |
| 272 |
{ |
| 273 |
uint32_t v = *(uint32_t *)src; src += 4; |
| 274 |
|
| 275 |
if (ecb_big_endian ()) |
| 276 |
v = ecb_bswap32 (v); |
| 277 |
|
| 278 |
v = ecb_rotl32 (v, 8); // abgr to bgra |
| 279 |
|
| 280 |
if (!byte_order_mismatch) |
| 281 |
v = ecb_bswap32 (v); |
| 282 |
|
| 283 |
*dst++ = v; |
| 284 |
} |
| 285 |
|
| 286 |
row += rowstride; |
| 287 |
line += xi.bytes_per_line; |
| 288 |
} |
| 289 |
|
| 290 |
rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height); |
| 291 |
img->alloc (); |
| 292 |
|
| 293 |
GC gc = XCreateGC (dpy, img->pm, 0, 0); |
| 294 |
XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
| 295 |
XFreeGC (dpy, gc); |
| 296 |
|
| 297 |
free (xi.data); |
| 298 |
|
| 299 |
return img; |
| 300 |
} |
| 301 |
|
| 302 |
rxvt_img * |
| 303 |
rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
| 304 |
{ |
| 305 |
GError *err = 0; |
| 306 |
GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
| 307 |
|
| 308 |
if (!pb) |
| 309 |
rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
| 310 |
|
| 311 |
rxvt_img *img = new_from_pixbuf (s, pb); |
| 312 |
|
| 313 |
g_object_unref (pb); |
| 314 |
|
| 315 |
return img; |
| 316 |
} |
| 317 |
|
| 318 |
# endif |
| 319 |
|
| 320 |
void |
| 321 |
rxvt_img::destroy () |
| 322 |
{ |
| 323 |
if (--ref->cnt) |
| 324 |
return; |
| 325 |
|
| 326 |
if (pm && ref->ours) |
| 327 |
XFreePixmap (s->display->dpy, pm); |
| 328 |
|
| 329 |
delete ref; |
| 330 |
} |
| 331 |
|
| 332 |
rxvt_img::~rxvt_img () |
| 333 |
{ |
| 334 |
destroy (); |
| 335 |
} |
| 336 |
|
| 337 |
void |
| 338 |
rxvt_img::alloc () |
| 339 |
{ |
| 340 |
pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
| 341 |
ref = new pixref (w, h); |
| 342 |
} |
| 343 |
|
| 344 |
Picture |
| 345 |
rxvt_img::picture () |
| 346 |
{ |
| 347 |
Display *dpy = s->display->dpy; |
| 348 |
|
| 349 |
XRenderPictureAttributes pa; |
| 350 |
pa.repeat = repeat; |
| 351 |
Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
| 352 |
|
| 353 |
return pic; |
| 354 |
} |
| 355 |
|
| 356 |
void |
| 357 |
rxvt_img::unshare () |
| 358 |
{ |
| 359 |
if (ref->cnt == 1 && ref->ours) |
| 360 |
return; |
| 361 |
|
| 362 |
Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
| 363 |
GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
| 364 |
XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
| 365 |
XFreeGC (s->display->dpy, gc); |
| 366 |
|
| 367 |
destroy (); |
| 368 |
|
| 369 |
pm = pm2; |
| 370 |
ref = new pixref (ref->w, ref->h); |
| 371 |
} |
| 372 |
|
| 373 |
void |
| 374 |
rxvt_img::fill (const rgba &c) |
| 375 |
{ |
| 376 |
XRenderColor rc = { c.r, c.g, c.b, c.a }; |
| 377 |
|
| 378 |
Display *dpy = s->display->dpy; |
| 379 |
Picture src = picture (); |
| 380 |
XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); |
| 381 |
XRenderFreePicture (dpy, src); |
| 382 |
} |
| 383 |
|
| 384 |
void |
| 385 |
rxvt_img::add_alpha () |
| 386 |
{ |
| 387 |
if (format->direct.alphaMask) |
| 388 |
return; |
| 389 |
|
| 390 |
Display *dpy = s->display->dpy; |
| 391 |
|
| 392 |
rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat); |
| 393 |
img->alloc (); |
| 394 |
|
| 395 |
Picture src = picture (); |
| 396 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
| 397 |
|
| 398 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
| 399 |
|
| 400 |
XRenderFreePicture (dpy, src); |
| 401 |
XRenderFreePicture (dpy, dst); |
| 402 |
|
| 403 |
::swap (img->ref, ref); |
| 404 |
::swap (img->pm , pm ); |
| 405 |
|
| 406 |
delete img; |
| 407 |
} |
| 408 |
|
| 409 |
static void |
| 410 |
get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params) |
| 411 |
{ |
| 412 |
nv sigma = radius / 2.0; |
| 413 |
nv scale = sqrt (2.0 * M_PI) * sigma; |
| 414 |
nv sum = 0.0; |
| 415 |
|
| 416 |
for (int i = 0; i < width; i++) |
| 417 |
{ |
| 418 |
nv x = i - width / 2; |
| 419 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
| 420 |
sum += kernel[i]; |
| 421 |
} |
| 422 |
|
| 423 |
params[0] = XDoubleToFixed (width); |
| 424 |
params[1] = XDoubleToFixed (1); |
| 425 |
|
| 426 |
for (int i = 0; i < width; i++) |
| 427 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
| 428 |
} |
| 429 |
|
| 430 |
rxvt_img * |
| 431 |
rxvt_img::blur (int rh, int rv) |
| 432 |
{ |
| 433 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
| 434 |
return clone (); |
| 435 |
|
| 436 |
Display *dpy = s->display->dpy; |
| 437 |
int size = max (rh, rv) * 2 + 1; |
| 438 |
nv *kernel = (nv *)malloc (size * sizeof (nv)); |
| 439 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
| 440 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
| 441 |
img->alloc (); |
| 442 |
|
| 443 |
XRenderPictureAttributes pa; |
| 444 |
pa.repeat = RepeatPad; |
| 445 |
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
| 446 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
| 447 |
|
| 448 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
| 449 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
| 450 |
XFreePixmap (dpy, tmp_pm); |
| 451 |
|
| 452 |
if (kernel && params) |
| 453 |
{ |
| 454 |
size = rh * 2 + 1; |
| 455 |
get_gaussian_kernel (rh, size, kernel, params); |
| 456 |
|
| 457 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
| 458 |
XRenderComposite (dpy, |
| 459 |
PictOpSrc, |
| 460 |
src, |
| 461 |
None, |
| 462 |
tmp, |
| 463 |
0, 0, |
| 464 |
0, 0, |
| 465 |
0, 0, |
| 466 |
w, h); |
| 467 |
|
| 468 |
size = rv * 2 + 1; |
| 469 |
get_gaussian_kernel (rv, size, kernel, params); |
| 470 |
::swap (params[0], params[1]); |
| 471 |
|
| 472 |
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
| 473 |
XRenderComposite (dpy, |
| 474 |
PictOpSrc, |
| 475 |
tmp, |
| 476 |
None, |
| 477 |
dst, |
| 478 |
0, 0, |
| 479 |
0, 0, |
| 480 |
0, 0, |
| 481 |
w, h); |
| 482 |
} |
| 483 |
|
| 484 |
free (kernel); |
| 485 |
free (params); |
| 486 |
|
| 487 |
XRenderFreePicture (dpy, src); |
| 488 |
XRenderFreePicture (dpy, dst); |
| 489 |
XRenderFreePicture (dpy, tmp); |
| 490 |
|
| 491 |
return img; |
| 492 |
} |
| 493 |
|
| 494 |
static Picture |
| 495 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
| 496 |
{ |
| 497 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
| 498 |
|
| 499 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
| 500 |
XRenderPictureAttributes pa; |
| 501 |
pa.repeat = RepeatNormal; |
| 502 |
pa.component_alpha = component_alpha; |
| 503 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
| 504 |
|
| 505 |
XFreePixmap (dpy, pixmap); |
| 506 |
|
| 507 |
return mask; |
| 508 |
} |
| 509 |
|
| 510 |
static void |
| 511 |
extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) |
| 512 |
{ |
| 513 |
int32_t x = clamp (c, cl0, cl1); |
| 514 |
c -= x; |
| 515 |
xc = x; |
| 516 |
} |
| 517 |
|
| 518 |
static bool |
| 519 |
extract (int32_t cl0, int32_t cl1, int32_t &r, int32_t &g, int32_t &b, int32_t &a, unsigned short &xr, unsigned short &xg, unsigned short &xb, unsigned short &xa) |
| 520 |
{ |
| 521 |
extract (cl0, cl1, r, xr); |
| 522 |
extract (cl0, cl1, g, xg); |
| 523 |
extract (cl0, cl1, b, xb); |
| 524 |
extract (cl0, cl1, a, xa); |
| 525 |
|
| 526 |
return xr | xg | xb | xa; |
| 527 |
} |
| 528 |
|
| 529 |
void |
| 530 |
rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
| 531 |
{ |
| 532 |
unshare (); |
| 533 |
|
| 534 |
Display *dpy = s->display->dpy; |
| 535 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
| 536 |
|
| 537 |
// loop should not be needed for brightness, as only -1..1 makes sense |
| 538 |
//while (r | g | b | a) |
| 539 |
{ |
| 540 |
unsigned short xr, xg, xb, xa; |
| 541 |
XRenderColor mask_c; |
| 542 |
|
| 543 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
| 544 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
| 545 |
|
| 546 |
if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
| 547 |
{ |
| 548 |
XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; |
| 549 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
| 550 |
mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing |
| 551 |
mask_c.green = -mask_c.green; |
| 552 |
mask_c.blue = -mask_c.blue; |
| 553 |
mask_c.alpha = -mask_c.alpha; |
| 554 |
XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
| 555 |
XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
| 556 |
} |
| 557 |
} |
| 558 |
|
| 559 |
XRenderFreePicture (dpy, dst); |
| 560 |
} |
| 561 |
|
| 562 |
void |
| 563 |
rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) |
| 564 |
{ |
| 565 |
if (r < 0 || g < 0 || b < 0 || a < 0) |
| 566 |
rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
| 567 |
|
| 568 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
| 569 |
img->alloc (); |
| 570 |
img->fill (rgba (0, 0, 0, 0)); |
| 571 |
|
| 572 |
// premultiply (yeah, these are not exact, sue me or fix it) |
| 573 |
r = (r * (a >> 8)) >> 8; |
| 574 |
g = (g * (a >> 8)) >> 8; |
| 575 |
b = (b * (a >> 8)) >> 8; |
| 576 |
|
| 577 |
Display *dpy = s->display->dpy; |
| 578 |
|
| 579 |
Picture src = picture (); |
| 580 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
| 581 |
Picture mul = create_xrender_mask (dpy, pm, True, True); |
| 582 |
|
| 583 |
//TODO: this operator does not yet implement some useful contrast |
| 584 |
while (r | g | b | a) |
| 585 |
{ |
| 586 |
unsigned short xr, xg, xb, xa; |
| 587 |
XRenderColor mask_c; |
| 588 |
|
| 589 |
if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
| 590 |
{ |
| 591 |
XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); |
| 592 |
XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); |
| 593 |
} |
| 594 |
} |
| 595 |
|
| 596 |
XRenderFreePicture (dpy, mul); |
| 597 |
XRenderFreePicture (dpy, dst); |
| 598 |
XRenderFreePicture (dpy, src); |
| 599 |
|
| 600 |
::swap (img->ref, ref); |
| 601 |
::swap (img->pm , pm ); |
| 602 |
|
| 603 |
delete img; |
| 604 |
} |
| 605 |
|
| 606 |
void |
| 607 |
rxvt_img::draw (rxvt_img *img, int op, nv mask) |
| 608 |
{ |
| 609 |
unshare (); |
| 610 |
|
| 611 |
Display *dpy = s->display->dpy; |
| 612 |
Picture src = img->picture (); |
| 613 |
Picture dst = picture (); |
| 614 |
Picture mask_p = 0; |
| 615 |
|
| 616 |
if (mask != 1.) |
| 617 |
{ |
| 618 |
mask_p = create_xrender_mask (dpy, img->pm, False, False); |
| 619 |
XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) }; |
| 620 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
| 621 |
} |
| 622 |
|
| 623 |
XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h); |
| 624 |
|
| 625 |
XRenderFreePicture (dpy, src); |
| 626 |
XRenderFreePicture (dpy, dst); |
| 627 |
|
| 628 |
if (mask_p) |
| 629 |
XRenderFreePicture (dpy, mask_p); |
| 630 |
} |
| 631 |
|
| 632 |
rxvt_img * |
| 633 |
rxvt_img::clone () |
| 634 |
{ |
| 635 |
return new rxvt_img (*this); |
| 636 |
} |
| 637 |
|
| 638 |
rxvt_img * |
| 639 |
rxvt_img::reify () |
| 640 |
{ |
| 641 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
| 642 |
return clone (); |
| 643 |
|
| 644 |
Display *dpy = s->display->dpy; |
| 645 |
|
| 646 |
// add an alpha channel if... |
| 647 |
bool alpha = !format->direct.alphaMask // pixmap has none yet |
| 648 |
&& (x || y) // we need one because of non-zero offset |
| 649 |
&& repeat == RepeatNone; // and we have no good pixels to fill with |
| 650 |
|
| 651 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
| 652 |
img->alloc (); |
| 653 |
|
| 654 |
Picture src = picture (); |
| 655 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
| 656 |
|
| 657 |
if (alpha) |
| 658 |
{ |
| 659 |
XRenderColor rc = { 0, 0, 0, 0 }; |
| 660 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
| 661 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h); |
| 662 |
} |
| 663 |
else |
| 664 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h); |
| 665 |
|
| 666 |
XRenderFreePicture (dpy, src); |
| 667 |
XRenderFreePicture (dpy, dst); |
| 668 |
|
| 669 |
return img; |
| 670 |
} |
| 671 |
|
| 672 |
rxvt_img * |
| 673 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
| 674 |
{ |
| 675 |
rxvt_img *img = clone (); |
| 676 |
|
| 677 |
img->x -= x; |
| 678 |
img->y -= y; |
| 679 |
|
| 680 |
if (w != width || h != height) |
| 681 |
{ |
| 682 |
img->w = width; |
| 683 |
img->h = height; |
| 684 |
|
| 685 |
rxvt_img *img2 = img->reify (); |
| 686 |
delete img; |
| 687 |
img = img2; |
| 688 |
} |
| 689 |
|
| 690 |
return img; |
| 691 |
} |
| 692 |
|
| 693 |
rxvt_img * |
| 694 |
rxvt_img::transform (nv matrix[3][3]) |
| 695 |
{ |
| 696 |
// calculate new pixel bounding box coordinates |
| 697 |
nv r[2], rmin[2], rmax[2]; |
| 698 |
|
| 699 |
mat3x3 m (matrix); |
| 700 |
|
| 701 |
for (int i = 0; i < 2; ++i) |
| 702 |
{ |
| 703 |
nv v; |
| 704 |
|
| 705 |
v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v; |
| 706 |
v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v); |
| 707 |
v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
| 708 |
v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
| 709 |
} |
| 710 |
|
| 711 |
float sx = rmin [0] - x; |
| 712 |
float sy = rmin [1] - y; |
| 713 |
|
| 714 |
// TODO: adjust matrix for subpixel accuracy |
| 715 |
int nx = floor (rmin [0]); |
| 716 |
int ny = floor (rmin [1]); |
| 717 |
|
| 718 |
int new_width = ceil (rmax [0] - rmin [0]); |
| 719 |
int new_height = ceil (rmax [1] - rmin [1]); |
| 720 |
|
| 721 |
m = mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y); |
| 722 |
|
| 723 |
mat3x3 inv = m.invert (); |
| 724 |
|
| 725 |
rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat); |
| 726 |
img->alloc (); |
| 727 |
|
| 728 |
Display *dpy = s->display->dpy; |
| 729 |
Picture src = picture (); |
| 730 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
| 731 |
|
| 732 |
XTransform xfrm; |
| 733 |
|
| 734 |
for (int i = 0; i < 3; ++i) |
| 735 |
for (int j = 0; j < 3; ++j) |
| 736 |
xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
| 737 |
|
| 738 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
| 739 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
| 740 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height); |
| 741 |
#if 1 |
| 742 |
{ |
| 743 |
XRenderColor rc = { 65535,0,0,65535 }; |
| 744 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, new_width, new_height); |
| 745 |
}{ |
| 746 |
XRenderColor rc = { 0,0,0,65535 }; |
| 747 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 1, 1, new_width - 2, new_height - 2); |
| 748 |
} |
| 749 |
XRenderComposite (dpy, PictOpOver, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height); |
| 750 |
#endif |
| 751 |
|
| 752 |
XRenderFreePicture (dpy, src); |
| 753 |
XRenderFreePicture (dpy, dst); |
| 754 |
|
| 755 |
return img; |
| 756 |
} |
| 757 |
|
| 758 |
rxvt_img * |
| 759 |
rxvt_img::scale (int new_width, int new_height) |
| 760 |
{ |
| 761 |
if (w == new_width && h == new_height) |
| 762 |
return clone (); |
| 763 |
|
| 764 |
nv matrix[3][3] = { |
| 765 |
{ new_width / (nv)w, 0, 0 }, |
| 766 |
{ 0, new_height / (nv)h, 0 }, |
| 767 |
{ 0, 0, 1 } |
| 768 |
}; |
| 769 |
|
| 770 |
int old_repeat_mode = repeat; |
| 771 |
repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
| 772 |
|
| 773 |
rxvt_img *img = transform (matrix); |
| 774 |
|
| 775 |
repeat = old_repeat_mode; |
| 776 |
img->repeat = repeat; |
| 777 |
|
| 778 |
return img; |
| 779 |
} |
| 780 |
|
| 781 |
rxvt_img * |
| 782 |
rxvt_img::rotate (int cx, int cy, nv phi) |
| 783 |
{ |
| 784 |
nv s = sin (phi); |
| 785 |
nv c = cos (phi); |
| 786 |
|
| 787 |
nv matrix[3][3] = { |
| 788 |
#if 0 |
| 789 |
{ c, -s, cx - c * cx + s * cy }, |
| 790 |
{ s, c, cy - s * cx - c * cy }, |
| 791 |
{ 0, 0, 1 } |
| 792 |
#else |
| 793 |
{ c, -s, 0 }, |
| 794 |
{ s, c, 0 }, |
| 795 |
{ 0, 0, 1 } |
| 796 |
#endif |
| 797 |
}; |
| 798 |
|
| 799 |
move (-cx, -cy); |
| 800 |
rxvt_img *img = transform (matrix); |
| 801 |
move ( cx, cy); |
| 802 |
img->move (cx, cy); |
| 803 |
|
| 804 |
return img; |
| 805 |
} |
| 806 |
|
| 807 |
rxvt_img * |
| 808 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg) |
| 809 |
{ |
| 810 |
if (new_format == format) |
| 811 |
return clone (); |
| 812 |
|
| 813 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
| 814 |
img->alloc (); |
| 815 |
|
| 816 |
Display *dpy = s->display->dpy; |
| 817 |
Picture src = picture (); |
| 818 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
| 819 |
int op = PictOpSrc; |
| 820 |
|
| 821 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
| 822 |
{ |
| 823 |
// does it have to be that complicated |
| 824 |
XRenderColor rc = { bg.r, bg.g, bg.b, bg.a }; |
| 825 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
| 826 |
|
| 827 |
op = PictOpOver; |
| 828 |
} |
| 829 |
|
| 830 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
| 831 |
|
| 832 |
XRenderFreePicture (dpy, src); |
| 833 |
XRenderFreePicture (dpy, dst); |
| 834 |
|
| 835 |
return img; |
| 836 |
} |
| 837 |
|
| 838 |
rxvt_img * |
| 839 |
rxvt_img::blend (rxvt_img *img, nv factor) |
| 840 |
{ |
| 841 |
rxvt_img *img2 = clone (); |
| 842 |
Display *dpy = s->display->dpy; |
| 843 |
Picture src = img->picture (); |
| 844 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
| 845 |
Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
| 846 |
|
| 847 |
XRenderColor mask_c; |
| 848 |
|
| 849 |
mask_c.alpha = float_to_component (factor); |
| 850 |
mask_c.red = |
| 851 |
mask_c.green = |
| 852 |
mask_c.blue = 0; |
| 853 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
| 854 |
|
| 855 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
| 856 |
|
| 857 |
XRenderFreePicture (dpy, src); |
| 858 |
XRenderFreePicture (dpy, dst); |
| 859 |
XRenderFreePicture (dpy, mask); |
| 860 |
|
| 861 |
return img2; |
| 862 |
} |
| 863 |
|
| 864 |
#endif |
| 865 |
|
