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