| 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 |
rxvt_img * |
| 55 |
rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
| 56 |
{ |
| 57 |
Display *dpy = s->display->dpy; |
| 58 |
|
| 59 |
int width = gdk_pixbuf_get_width (pb); |
| 60 |
int height = gdk_pixbuf_get_height (pb); |
| 61 |
|
| 62 |
if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
| 63 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
| 64 |
|
| 65 |
// since we require rgb24/argb32 formats from xrender we assume |
| 66 |
// that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
| 67 |
int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24; |
| 68 |
|
| 69 |
int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
| 70 |
|
| 71 |
XImage xi; |
| 72 |
|
| 73 |
xi.width = width; |
| 74 |
xi.height = height; |
| 75 |
xi.xoffset = 0; |
| 76 |
xi.format = ZPixmap; |
| 77 |
xi.byte_order = ImageByteOrder (dpy); |
| 78 |
xi.bitmap_unit = 0; //XY only, unused |
| 79 |
xi.bitmap_bit_order = 0; //XY only, unused |
| 80 |
xi.bitmap_pad = BitmapPad (dpy); |
| 81 |
xi.depth = depth; |
| 82 |
xi.bytes_per_line = 0; |
| 83 |
xi.bits_per_pixel = 32; //Z only |
| 84 |
xi.red_mask = 0x00000000; //Z only, unused |
| 85 |
xi.green_mask = 0x00000000; //Z only, unused |
| 86 |
xi.blue_mask = 0x00000000; //Z only, unused |
| 87 |
xi.obdata = 0; // probably unused |
| 88 |
|
| 89 |
bool byte_order_mismatch = byte_order != xi.byte_order; |
| 90 |
|
| 91 |
if (!XInitImage (&xi)) |
| 92 |
rxvt_fatal ("unable to initialise ximage, please report.\n"); |
| 93 |
|
| 94 |
if (height > INT_MAX / xi.bytes_per_line) |
| 95 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); |
| 96 |
|
| 97 |
xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); |
| 98 |
|
| 99 |
int rowstride = gdk_pixbuf_get_rowstride (pb); |
| 100 |
|
| 101 |
assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb)); |
| 102 |
unsigned char *row = gdk_pixbuf_get_pixels (pb); |
| 103 |
char *line = xi.data; |
| 104 |
|
| 105 |
for (int y = 0; y < height; y++) |
| 106 |
{ |
| 107 |
unsigned char *src = row; |
| 108 |
uint32_t *dst = (uint32_t *)line; |
| 109 |
|
| 110 |
if (depth == 24) |
| 111 |
for (int x = 0; x < width; x++) |
| 112 |
{ |
| 113 |
uint8_t r = *src++; |
| 114 |
uint8_t g = *src++; |
| 115 |
uint8_t b = *src++; |
| 116 |
|
| 117 |
uint32_t v = (r << 16) | (g << 8) | b; |
| 118 |
|
| 119 |
if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
| 120 |
v = ecb_bswap32 (v); |
| 121 |
|
| 122 |
*dst++ = v; |
| 123 |
} |
| 124 |
else |
| 125 |
for (int x = 0; x < width; x++) |
| 126 |
{ |
| 127 |
uint32_t v = *(uint32_t *)src; src += 4; |
| 128 |
|
| 129 |
if (ecb_big_endian ()) |
| 130 |
v = ecb_bswap32 (v); |
| 131 |
|
| 132 |
v = ecb_rotl32 (v, 8); // abgr to bgra |
| 133 |
|
| 134 |
if (!byte_order_mismatch) |
| 135 |
v = ecb_bswap32 (v); |
| 136 |
|
| 137 |
*dst++ = v; |
| 138 |
} |
| 139 |
|
| 140 |
row += rowstride; |
| 141 |
line += xi.bytes_per_line; |
| 142 |
} |
| 143 |
|
| 144 |
rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height); |
| 145 |
img->alloc (); |
| 146 |
|
| 147 |
GC gc = XCreateGC (dpy, img->pm, 0, 0); |
| 148 |
XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
| 149 |
XFreeGC (dpy, gc); |
| 150 |
|
| 151 |
free (xi.data); |
| 152 |
|
| 153 |
return img; |
| 154 |
} |
| 155 |
|
| 156 |
rxvt_img * |
| 157 |
rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
| 158 |
{ |
| 159 |
GError *err = 0; |
| 160 |
GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
| 161 |
|
| 162 |
if (!pb) |
| 163 |
rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
| 164 |
|
| 165 |
rxvt_img *img = new_from_pixbuf (s, pb); |
| 166 |
|
| 167 |
g_object_unref (pb); |
| 168 |
|
| 169 |
return img; |
| 170 |
} |
| 171 |
|
| 172 |
void |
| 173 |
rxvt_img::destroy () |
| 174 |
{ |
| 175 |
if (--ref->cnt) |
| 176 |
return; |
| 177 |
|
| 178 |
if (pm && ref->ours) |
| 179 |
XFreePixmap (s->display->dpy, pm); |
| 180 |
|
| 181 |
delete ref; |
| 182 |
} |
| 183 |
|
| 184 |
rxvt_img::~rxvt_img () |
| 185 |
{ |
| 186 |
destroy (); |
| 187 |
} |
| 188 |
|
| 189 |
void |
| 190 |
rxvt_img::alloc () |
| 191 |
{ |
| 192 |
pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
| 193 |
ref = new pixref (w, h); |
| 194 |
} |
| 195 |
|
| 196 |
Picture |
| 197 |
rxvt_img::src_picture () |
| 198 |
{ |
| 199 |
Display *dpy = s->display->dpy; |
| 200 |
|
| 201 |
XRenderPictureAttributes pa; |
| 202 |
pa.repeat = repeat; |
| 203 |
Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
| 204 |
|
| 205 |
return pic; |
| 206 |
} |
| 207 |
|
| 208 |
void |
| 209 |
rxvt_img::unshare () |
| 210 |
{ |
| 211 |
if (ref->cnt == 1 && ref->ours) |
| 212 |
return; |
| 213 |
|
| 214 |
//TODO: maybe should reify instead |
| 215 |
Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
| 216 |
GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
| 217 |
XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
| 218 |
XFreeGC (s->display->dpy, gc); |
| 219 |
|
| 220 |
destroy (); |
| 221 |
|
| 222 |
pm = pm2; |
| 223 |
ref = new pixref (ref->w, ref->h); |
| 224 |
} |
| 225 |
|
| 226 |
void |
| 227 |
rxvt_img::fill (const rxvt_color &c) |
| 228 |
{ |
| 229 |
XGCValues gcv; |
| 230 |
gcv.foreground = c; |
| 231 |
GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); |
| 232 |
XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); |
| 233 |
XFreeGC (s->display->dpy, gc); |
| 234 |
} |
| 235 |
|
| 236 |
static void |
| 237 |
get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
| 238 |
{ |
| 239 |
double sigma = radius / 2.0; |
| 240 |
double scale = sqrt (2.0 * M_PI) * sigma; |
| 241 |
double sum = 0.0; |
| 242 |
|
| 243 |
for (int i = 0; i < width; i++) |
| 244 |
{ |
| 245 |
double x = i - width / 2; |
| 246 |
kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
| 247 |
sum += kernel[i]; |
| 248 |
} |
| 249 |
|
| 250 |
params[0] = XDoubleToFixed (width); |
| 251 |
params[1] = XDoubleToFixed (1); |
| 252 |
|
| 253 |
for (int i = 0; i < width; i++) |
| 254 |
params[i+2] = XDoubleToFixed (kernel[i] / sum); |
| 255 |
} |
| 256 |
|
| 257 |
rxvt_img * |
| 258 |
rxvt_img::blur (int rh, int rv) |
| 259 |
{ |
| 260 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
| 261 |
return clone (); |
| 262 |
|
| 263 |
Display *dpy = s->display->dpy; |
| 264 |
int size = max (rh, rv) * 2 + 1; |
| 265 |
double *kernel = (double *)malloc (size * sizeof (double)); |
| 266 |
XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
| 267 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
| 268 |
img->alloc (); |
| 269 |
|
| 270 |
XRenderPictureAttributes pa; |
| 271 |
pa.repeat = RepeatPad; |
| 272 |
Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
| 273 |
Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
| 274 |
|
| 275 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
| 276 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
| 277 |
XFreePixmap (dpy, tmp_pm); |
| 278 |
|
| 279 |
if (kernel && params) |
| 280 |
{ |
| 281 |
size = rh * 2 + 1; |
| 282 |
get_gaussian_kernel (rh, size, kernel, params); |
| 283 |
|
| 284 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
| 285 |
XRenderComposite (dpy, |
| 286 |
PictOpSrc, |
| 287 |
src, |
| 288 |
None, |
| 289 |
tmp, |
| 290 |
0, 0, |
| 291 |
0, 0, |
| 292 |
0, 0, |
| 293 |
w, h); |
| 294 |
|
| 295 |
size = rv * 2 + 1; |
| 296 |
get_gaussian_kernel (rv, size, kernel, params); |
| 297 |
::swap (params[0], params[1]); |
| 298 |
|
| 299 |
XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
| 300 |
XRenderComposite (dpy, |
| 301 |
PictOpSrc, |
| 302 |
tmp, |
| 303 |
None, |
| 304 |
dst, |
| 305 |
0, 0, |
| 306 |
0, 0, |
| 307 |
0, 0, |
| 308 |
w, h); |
| 309 |
} |
| 310 |
|
| 311 |
free (kernel); |
| 312 |
free (params); |
| 313 |
XRenderFreePicture (dpy, src); |
| 314 |
XRenderFreePicture (dpy, dst); |
| 315 |
XRenderFreePicture (dpy, tmp); |
| 316 |
|
| 317 |
return img; |
| 318 |
} |
| 319 |
|
| 320 |
static Picture |
| 321 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) |
| 322 |
{ |
| 323 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
| 324 |
|
| 325 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
| 326 |
XRenderPictureAttributes pa; |
| 327 |
pa.repeat = True; |
| 328 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa); |
| 329 |
|
| 330 |
XFreePixmap (dpy, pixmap); |
| 331 |
|
| 332 |
return mask; |
| 333 |
} |
| 334 |
|
| 335 |
void |
| 336 |
rxvt_img::brightness (uint16_t r, uint16_t g, uint16_t b, uint16_t a) |
| 337 |
{ |
| 338 |
Display *dpy = s->display->dpy; |
| 339 |
Picture src = create_xrender_mask (dpy, pm, True); |
| 340 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
| 341 |
|
| 342 |
XRenderColor mask_c; |
| 343 |
mask_c.red = r; |
| 344 |
mask_c.green = g; |
| 345 |
mask_c.blue = b; |
| 346 |
mask_c.alpha = a; |
| 347 |
XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); |
| 348 |
|
| 349 |
XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
| 350 |
|
| 351 |
XRenderFreePicture (dpy, src); |
| 352 |
XRenderFreePicture (dpy, dst); |
| 353 |
} |
| 354 |
|
| 355 |
void |
| 356 |
rxvt_img::contrast (uint16_t r, uint16_t g, uint16_t b, uint16_t a) |
| 357 |
{ |
| 358 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) |
| 359 |
{ |
| 360 |
rxvt_warn ("rxvt_img::contrast operation not supported on this display, RENDER extension too old.\n"); |
| 361 |
return; |
| 362 |
} |
| 363 |
|
| 364 |
Display *dpy = s->display->dpy; |
| 365 |
Picture src = create_xrender_mask (dpy, pm, True); |
| 366 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
| 367 |
|
| 368 |
XRenderColor mask_c; |
| 369 |
mask_c.red = r; |
| 370 |
mask_c.green = g; |
| 371 |
mask_c.blue = b; |
| 372 |
mask_c.alpha = a; |
| 373 |
XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); |
| 374 |
|
| 375 |
XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
| 376 |
|
| 377 |
XRenderFreePicture (dpy, src); |
| 378 |
XRenderFreePicture (dpy, dst); |
| 379 |
} |
| 380 |
|
| 381 |
rxvt_img * |
| 382 |
rxvt_img::clone () |
| 383 |
{ |
| 384 |
return new rxvt_img (*this); |
| 385 |
} |
| 386 |
|
| 387 |
static XRenderPictFormat * |
| 388 |
find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
| 389 |
{ |
| 390 |
if (format->direct.alphaMask) |
| 391 |
return format; // already has alpha |
| 392 |
|
| 393 |
// try to find a suitable alpha format, one bit alpha is enough for our purposes |
| 394 |
if (format->type == PictTypeDirect) |
| 395 |
for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
| 396 |
if (f->direct.alphaMask |
| 397 |
&& f->type == PictTypeDirect |
| 398 |
&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
| 399 |
&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
| 400 |
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
| 401 |
return f; |
| 402 |
|
| 403 |
// should be a very good fallback |
| 404 |
return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
| 405 |
} |
| 406 |
|
| 407 |
rxvt_img * |
| 408 |
rxvt_img::reify () |
| 409 |
{ |
| 410 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
| 411 |
return clone (); |
| 412 |
|
| 413 |
Display *dpy = s->display->dpy; |
| 414 |
|
| 415 |
// add an alpha channel if... |
| 416 |
bool alpha = !format->direct.alphaMask // pixmap has none yet |
| 417 |
&& (x || y) // we need one because of non-zero offset |
| 418 |
&& repeat == RepeatNone; // and we have no good pixels to fill with |
| 419 |
|
| 420 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
| 421 |
img->alloc (); |
| 422 |
|
| 423 |
Picture src = src_picture (); |
| 424 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
| 425 |
|
| 426 |
if (alpha) |
| 427 |
{ |
| 428 |
XRenderColor rc = { 0, 0, 0, 0 }; |
| 429 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
| 430 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); |
| 431 |
} |
| 432 |
else |
| 433 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); |
| 434 |
|
| 435 |
XRenderFreePicture (dpy, src); |
| 436 |
XRenderFreePicture (dpy, dst); |
| 437 |
|
| 438 |
return img; |
| 439 |
} |
| 440 |
|
| 441 |
rxvt_img * |
| 442 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
| 443 |
{ |
| 444 |
rxvt_img *img = clone (); |
| 445 |
|
| 446 |
img->x += x; |
| 447 |
img->y += y; |
| 448 |
|
| 449 |
if (w != width || h != height) |
| 450 |
{ |
| 451 |
img->w = width; |
| 452 |
img->h = height; |
| 453 |
|
| 454 |
rxvt_img *img2 = img->reify (); |
| 455 |
delete img; |
| 456 |
img = img2; |
| 457 |
} |
| 458 |
|
| 459 |
return img; |
| 460 |
} |
| 461 |
|
| 462 |
rxvt_img * |
| 463 |
rxvt_img::transform (int new_width, int new_height, double matrix[9]) |
| 464 |
{ |
| 465 |
rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat); |
| 466 |
img->alloc (); |
| 467 |
|
| 468 |
Display *dpy = s->display->dpy; |
| 469 |
Picture src = src_picture (); |
| 470 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
| 471 |
|
| 472 |
XTransform xfrm; |
| 473 |
|
| 474 |
for (int i = 0; i < 3; ++i) |
| 475 |
for (int j = 0; j < 3; ++j) |
| 476 |
xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); |
| 477 |
|
| 478 |
#if 0 |
| 479 |
xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO |
| 480 |
xfrm.matrix [1][2] -= XDoubleToFixed (y); |
| 481 |
#endif |
| 482 |
|
| 483 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
| 484 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
| 485 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); |
| 486 |
|
| 487 |
XRenderFreePicture (dpy, src); |
| 488 |
XRenderFreePicture (dpy, dst); |
| 489 |
|
| 490 |
return img; |
| 491 |
} |
| 492 |
|
| 493 |
rxvt_img * |
| 494 |
rxvt_img::scale (int new_width, int new_height) |
| 495 |
{ |
| 496 |
if (w == new_width && h == new_height) |
| 497 |
return clone (); |
| 498 |
|
| 499 |
double matrix[9] = { |
| 500 |
w / (double)new_width, 0, 0, |
| 501 |
0, h / (double)new_height, 0, |
| 502 |
0, 0, 1 |
| 503 |
}; |
| 504 |
|
| 505 |
int old_repeat_mode = repeat; |
| 506 |
repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems |
| 507 |
|
| 508 |
rxvt_img *img = transform (new_width, new_height, matrix); |
| 509 |
|
| 510 |
repeat = old_repeat_mode; |
| 511 |
img->repeat = repeat; |
| 512 |
|
| 513 |
return img; |
| 514 |
} |
| 515 |
|
| 516 |
rxvt_img * |
| 517 |
rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi) |
| 518 |
{ |
| 519 |
double s = sin (phi); |
| 520 |
double c = cos (phi); |
| 521 |
|
| 522 |
double matrix[9] = { |
| 523 |
c, -s, -c * x + s * y + x, |
| 524 |
s, c, -s * x - c * y + y, |
| 525 |
0, 0, 1 |
| 526 |
}; |
| 527 |
|
| 528 |
return transform (new_width, new_height, matrix); |
| 529 |
} |
| 530 |
|
| 531 |
rxvt_img * |
| 532 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg) |
| 533 |
{ |
| 534 |
if (new_format == format) |
| 535 |
return clone (); |
| 536 |
|
| 537 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
| 538 |
img->alloc (); |
| 539 |
|
| 540 |
Display *dpy = s->display->dpy; |
| 541 |
Picture src = src_picture (); |
| 542 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
| 543 |
int op = PictOpSrc; |
| 544 |
|
| 545 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
| 546 |
{ |
| 547 |
// does it have to be that complicated |
| 548 |
rgba c; |
| 549 |
bg.get (c); |
| 550 |
|
| 551 |
XRenderColor rc = { c.r, c.g, c.b, 0xffff }; |
| 552 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
| 553 |
|
| 554 |
op = PictOpOver; |
| 555 |
} |
| 556 |
|
| 557 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
| 558 |
|
| 559 |
XRenderFreePicture (dpy, src); |
| 560 |
XRenderFreePicture (dpy, dst); |
| 561 |
|
| 562 |
return img; |
| 563 |
} |
| 564 |
|
| 565 |
rxvt_img * |
| 566 |
rxvt_img::blend (rxvt_img *img, double factor) |
| 567 |
{ |
| 568 |
rxvt_img *img2 = clone (); |
| 569 |
Display *dpy = s->display->dpy; |
| 570 |
Picture src = img->src_picture (); |
| 571 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
| 572 |
Picture mask = create_xrender_mask (dpy, img->pm, False); |
| 573 |
|
| 574 |
XRenderColor mask_c; |
| 575 |
|
| 576 |
mask_c.alpha = float_to_component (factor); |
| 577 |
mask_c.red = |
| 578 |
mask_c.green = |
| 579 |
mask_c.blue = 0; |
| 580 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
| 581 |
|
| 582 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
| 583 |
|
| 584 |
XRenderFreePicture (dpy, src); |
| 585 |
XRenderFreePicture (dpy, dst); |
| 586 |
XRenderFreePicture (dpy, mask); |
| 587 |
|
| 588 |
return img2; |
| 589 |
} |
| 590 |
|
| 591 |
#endif |
| 592 |
|
