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 |
#if 0 |
20 |
rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap) |
21 |
: s(screen), x(0), y(0), w(width), h(height), format(format), repeat(RepeatNormal), shared(false), pm(pixmap) |
22 |
{ |
23 |
} |
24 |
#endif |
25 |
|
26 |
rxvt_img * |
27 |
rxvt_img::new_from_root (rxvt_screen *s) |
28 |
{ |
29 |
Display *dpy = s->display->dpy; |
30 |
unsigned int root_pm_w, root_pm_h; |
31 |
Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]); |
32 |
if (root_pixmap == None) |
33 |
root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]); |
34 |
|
35 |
if (root_pixmap == None) |
36 |
return 0; |
37 |
|
38 |
Window wdummy; |
39 |
int idummy; |
40 |
unsigned int udummy; |
41 |
|
42 |
if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy)) |
43 |
return 0; |
44 |
|
45 |
rxvt_img *img = new rxvt_img ( |
46 |
s, |
47 |
XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)), |
48 |
0, |
49 |
0, |
50 |
root_pm_w, |
51 |
root_pm_h |
52 |
); |
53 |
|
54 |
img->pm = root_pixmap; |
55 |
img->ref = new pixref (root_pm_w, root_pm_h); |
56 |
img->ref->ours = false; |
57 |
|
58 |
return img; |
59 |
} |
60 |
|
61 |
rxvt_img * |
62 |
rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
63 |
{ |
64 |
int width = gdk_pixbuf_get_width (pb); |
65 |
int height = gdk_pixbuf_get_height (pb); |
66 |
|
67 |
if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
68 |
rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
69 |
|
70 |
// since we require rgb24/argb32 formats from xrender we assume |
71 |
// that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
72 |
int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24; |
73 |
|
74 |
XImage xi; |
75 |
|
76 |
xi.width = width; |
77 |
xi.height = height; |
78 |
xi.xoffset = 0; |
79 |
xi.format = ZPixmap; |
80 |
xi.byte_order = MSBFirst; // maybe go for host byte order, because servers are usually local? |
81 |
xi.bitmap_unit = 32; |
82 |
xi.bitmap_bit_order = MSBFirst; |
83 |
xi.bitmap_pad = 32; |
84 |
xi.depth = depth; |
85 |
xi.bytes_per_line = 0; |
86 |
xi.bits_per_pixel = 32; |
87 |
xi.red_mask = 0x00ff0000; |
88 |
xi.green_mask = 0x0000ff00; |
89 |
xi.blue_mask = 0x000000ff; |
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 |
{ |
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unsigned char r, g, b, a; |
108 |
unsigned char *data = row; |
109 |
|
110 |
if (depth == 24) |
111 |
for (int x = 0; x < width; x++) |
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{ |
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r = *data++; |
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g = *data++; |
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b = *data++; |
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*line++ = 0; |
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*line++ = r; |
118 |
*line++ = g; |
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*line++ = b; |
120 |
} |
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else |
122 |
for (int x = 0; x < width; x++) |
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{ |
124 |
r = *data++; |
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g = *data++; |
126 |
b = *data++; |
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a = *data++; |
128 |
*line++ = a; |
129 |
*line++ = r; |
130 |
*line++ = g; |
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*line++ = b; |
132 |
} |
133 |
|
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row += rowstride; |
135 |
} |
136 |
|
137 |
Display *dpy = s->display->dpy; |
138 |
|
139 |
rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height); |
140 |
img->alloc (); |
141 |
|
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GC gc = XCreateGC (dpy, img->pm, 0, 0); |
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XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
144 |
XFreeGC (dpy, gc); |
145 |
|
146 |
free (xi.data); |
147 |
|
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return img; |
149 |
} |
150 |
|
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rxvt_img * |
152 |
rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
153 |
{ |
154 |
GError *err = 0; |
155 |
GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
156 |
|
157 |
if (!pb) |
158 |
rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
159 |
|
160 |
rxvt_img *img = new_from_pixbuf (s, pb); |
161 |
|
162 |
g_object_unref (pb); |
163 |
|
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return img; |
165 |
} |
166 |
|
167 |
void |
168 |
rxvt_img::destroy () |
169 |
{ |
170 |
if (--ref->cnt) |
171 |
return; |
172 |
|
173 |
if (pm && ref->ours) |
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XFreePixmap (s->display->dpy, pm); |
175 |
|
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delete ref; |
177 |
} |
178 |
|
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rxvt_img::~rxvt_img () |
180 |
{ |
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destroy (); |
182 |
} |
183 |
|
184 |
void |
185 |
rxvt_img::alloc () |
186 |
{ |
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pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
188 |
ref = new pixref (w, h); |
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} |
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|
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Picture |
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rxvt_img::src_picture () |
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{ |
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Display *dpy = s->display->dpy; |
195 |
|
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XRenderPictureAttributes pa; |
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pa.repeat = repeat; |
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Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
199 |
|
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return pic; |
201 |
} |
202 |
|
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void |
204 |
rxvt_img::unshare () |
205 |
{ |
206 |
if (ref->cnt == 1 && ref->ours) |
207 |
return; |
208 |
|
209 |
//TODO: maybe should reify instead |
210 |
Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
211 |
GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
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XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
213 |
XFreeGC (s->display->dpy, gc); |
214 |
|
215 |
destroy (); |
216 |
|
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pm = pm2; |
218 |
ref = new pixref (ref->w, ref->h); |
219 |
} |
220 |
|
221 |
void |
222 |
rxvt_img::fill (const rxvt_color &c) |
223 |
{ |
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XGCValues gcv; |
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gcv.foreground = c; |
226 |
GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); |
227 |
XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); |
228 |
XFreeGC (s->display->dpy, gc); |
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} |
230 |
|
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static void |
232 |
get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
233 |
{ |
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double sigma = radius / 2.0; |
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double scale = sqrt (2.0 * M_PI) * sigma; |
236 |
double sum = 0.0; |
237 |
|
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for (int i = 0; i < width; i++) |
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{ |
240 |
double x = i - width / 2; |
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kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
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sum += kernel[i]; |
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} |
244 |
|
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params[0] = XDoubleToFixed (width); |
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params[1] = XDoubleToFixed (1); |
247 |
|
248 |
for (int i = 0; i < width; i++) |
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params[i+2] = XDoubleToFixed (kernel[i] / sum); |
250 |
} |
251 |
|
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rxvt_img * |
253 |
rxvt_img::blur (int rh, int rv) |
254 |
{ |
255 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
256 |
return clone (); |
257 |
|
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Display *dpy = s->display->dpy; |
259 |
int size = max (rh, rv) * 2 + 1; |
260 |
double *kernel = (double *)malloc (size * sizeof (double)); |
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XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
262 |
rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
263 |
img->alloc (); |
264 |
|
265 |
Picture src = src_picture (); |
266 |
|
267 |
XRenderPictureAttributes pa; |
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pa.repeat = RepeatPad; |
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Picture dst = XRenderCreatePicture (dpy, img->pm, format, CPRepeat, &pa); |
270 |
|
271 |
Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
272 |
Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
273 |
XFreePixmap (dpy, tmp_pm); |
274 |
|
275 |
if (kernel && params) |
276 |
{ |
277 |
size = rh * 2 + 1; |
278 |
get_gaussian_kernel (rh, size, kernel, params); |
279 |
|
280 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
281 |
XRenderComposite (dpy, |
282 |
PictOpSrc, |
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src, |
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None, |
285 |
tmp, |
286 |
0, 0, |
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0, 0, |
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0, 0, |
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w, h); |
290 |
|
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size = rv * 2 + 1; |
292 |
get_gaussian_kernel (rv, size, kernel, params); |
293 |
::swap (params[0], params[1]); |
294 |
|
295 |
XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
296 |
XRenderComposite (dpy, |
297 |
PictOpSrc, |
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tmp, |
299 |
None, |
300 |
dst, |
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0, 0, |
302 |
0, 0, |
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0, 0, |
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w, h); |
305 |
} |
306 |
|
307 |
free (kernel); |
308 |
free (params); |
309 |
XRenderFreePicture (dpy, src); |
310 |
XRenderFreePicture (dpy, dst); |
311 |
XRenderFreePicture (dpy, tmp); |
312 |
|
313 |
return img; |
314 |
} |
315 |
|
316 |
static Picture |
317 |
create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) |
318 |
{ |
319 |
Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
320 |
|
321 |
XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
322 |
XRenderPictureAttributes pa; |
323 |
pa.repeat = True; |
324 |
Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa); |
325 |
|
326 |
XFreePixmap (dpy, pixmap); |
327 |
|
328 |
return mask; |
329 |
} |
330 |
|
331 |
void |
332 |
rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a) |
333 |
{ |
334 |
Display *dpy = s->display->dpy; |
335 |
Picture src = create_xrender_mask (dpy, pm, True); |
336 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
337 |
|
338 |
XRenderColor mask_c; |
339 |
mask_c.red = r; |
340 |
mask_c.green = g; |
341 |
mask_c.blue = b; |
342 |
mask_c.alpha = a; |
343 |
XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); |
344 |
|
345 |
XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
346 |
|
347 |
XRenderFreePicture (dpy, src); |
348 |
XRenderFreePicture (dpy, dst); |
349 |
} |
350 |
|
351 |
void |
352 |
rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a) |
353 |
{ |
354 |
if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) |
355 |
return; |
356 |
|
357 |
Display *dpy = s->display->dpy; |
358 |
Picture src = create_xrender_mask (dpy, pm, True); |
359 |
Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
360 |
|
361 |
XRenderColor mask_c; |
362 |
mask_c.red = r; |
363 |
mask_c.green = g; |
364 |
mask_c.blue = b; |
365 |
mask_c.alpha = a; |
366 |
XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); |
367 |
|
368 |
XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
369 |
|
370 |
XRenderFreePicture (dpy, src); |
371 |
XRenderFreePicture (dpy, dst); |
372 |
} |
373 |
|
374 |
rxvt_img * |
375 |
rxvt_img::clone () |
376 |
{ |
377 |
return new rxvt_img (*this); |
378 |
} |
379 |
|
380 |
static XRenderPictFormat * |
381 |
find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
382 |
{ |
383 |
if (format->direct.alphaMask) |
384 |
return format; // already has alpha |
385 |
|
386 |
// try to find a suitable alpha format, one bit alpha is enough for our purposes |
387 |
if (format->type == PictTypeDirect) |
388 |
for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
389 |
if (f->direct.alphaMask |
390 |
&& f->type == PictTypeDirect |
391 |
&& ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
392 |
&& ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
393 |
&& ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
394 |
return f; |
395 |
|
396 |
// should be a very good fallback |
397 |
return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
398 |
} |
399 |
|
400 |
rxvt_img * |
401 |
rxvt_img::reify () |
402 |
{ |
403 |
if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
404 |
return clone (); |
405 |
|
406 |
Display *dpy = s->display->dpy; |
407 |
|
408 |
bool alpha = !format->direct.alphaMask |
409 |
&& (x || y) |
410 |
&& repeat == RepeatNone; |
411 |
|
412 |
rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
413 |
img->alloc (); |
414 |
|
415 |
Picture src = src_picture (); |
416 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
417 |
|
418 |
if (alpha) |
419 |
{ |
420 |
XRenderColor rc = { 0, 0, 0, 0 }; |
421 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
422 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); |
423 |
} |
424 |
else |
425 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); |
426 |
|
427 |
XRenderFreePicture (dpy, src); |
428 |
XRenderFreePicture (dpy, dst); |
429 |
|
430 |
return img; |
431 |
} |
432 |
|
433 |
rxvt_img * |
434 |
rxvt_img::sub_rect (int x, int y, int width, int height) |
435 |
{ |
436 |
rxvt_img *img = clone (); |
437 |
|
438 |
img->x += x; |
439 |
img->y += y; |
440 |
|
441 |
if (w != width || h != height) |
442 |
{ |
443 |
img->w = width; |
444 |
img->h = height; |
445 |
|
446 |
rxvt_img *img2 = img->reify (); |
447 |
delete img; |
448 |
img = img2; |
449 |
} |
450 |
|
451 |
return img; |
452 |
} |
453 |
|
454 |
rxvt_img * |
455 |
rxvt_img::transform (int new_width, int new_height, double matrix[9]) |
456 |
{ |
457 |
rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat); |
458 |
img->alloc (); |
459 |
|
460 |
Display *dpy = s->display->dpy; |
461 |
Picture src = src_picture (); |
462 |
Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
463 |
|
464 |
XTransform xfrm; |
465 |
|
466 |
for (int i = 0; i < 3; ++i) |
467 |
for (int j = 0; j < 3; ++j) |
468 |
xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]); |
469 |
|
470 |
#if 0 |
471 |
xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO |
472 |
xfrm.matrix [1][2] -= XDoubleToFixed (y); |
473 |
#endif |
474 |
|
475 |
XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
476 |
XRenderSetPictureTransform (dpy, src, &xfrm); |
477 |
XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height); |
478 |
|
479 |
XRenderFreePicture (dpy, src); |
480 |
XRenderFreePicture (dpy, dst); |
481 |
|
482 |
return img; |
483 |
} |
484 |
|
485 |
rxvt_img * |
486 |
rxvt_img::scale (int new_width, int new_height) |
487 |
{ |
488 |
if (w == new_width && h == new_height) |
489 |
return clone (); |
490 |
|
491 |
double matrix[9] = { |
492 |
w / (double)new_width, 0, 0, |
493 |
0, h / (double)new_height, 0, |
494 |
0, 0, 1 |
495 |
}; |
496 |
|
497 |
int old_repeat_mode = repeat; |
498 |
repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems |
499 |
|
500 |
rxvt_img *img = transform (new_width, new_height, matrix); |
501 |
|
502 |
repeat = old_repeat_mode; |
503 |
img->repeat = repeat; |
504 |
|
505 |
return img; |
506 |
} |
507 |
|
508 |
rxvt_img * |
509 |
rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi) |
510 |
{ |
511 |
double s = sin (phi); |
512 |
double c = cos (phi); |
513 |
|
514 |
double matrix[9] = { |
515 |
c, -s, -c * x + s * y + x, |
516 |
s, c, -s * x - c * y + y, |
517 |
0, 0, 1 |
518 |
}; |
519 |
|
520 |
return transform (new_width, new_height, matrix); |
521 |
} |
522 |
|
523 |
rxvt_img * |
524 |
rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg) |
525 |
{ |
526 |
if (new_format == format) |
527 |
return clone (); |
528 |
|
529 |
rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
530 |
img->alloc (); |
531 |
|
532 |
Display *dpy = s->display->dpy; |
533 |
Picture src = src_picture (); |
534 |
Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
535 |
int op = PictOpSrc; |
536 |
|
537 |
if (format->direct.alphaMask && !new_format->direct.alphaMask) |
538 |
{ |
539 |
// does it have to be that complicated |
540 |
rgba c; |
541 |
bg.get (c); |
542 |
|
543 |
XRenderColor rc = { c.r, c.g, c.b, 0xffff }; |
544 |
XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
545 |
|
546 |
op = PictOpOver; |
547 |
} |
548 |
|
549 |
XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
550 |
|
551 |
XRenderFreePicture (dpy, src); |
552 |
XRenderFreePicture (dpy, dst); |
553 |
|
554 |
return img; |
555 |
} |
556 |
|
557 |
rxvt_img * |
558 |
rxvt_img::blend (rxvt_img *img, double factor) |
559 |
{ |
560 |
rxvt_img *img2 = clone (); |
561 |
Display *dpy = s->display->dpy; |
562 |
Picture src = img->src_picture (); |
563 |
Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
564 |
Picture mask = create_xrender_mask (dpy, img->pm, False); |
565 |
|
566 |
XRenderColor mask_c; |
567 |
|
568 |
mask_c.alpha = float_to_component (factor); |
569 |
mask_c.red = |
570 |
mask_c.green = |
571 |
mask_c.blue = 0; |
572 |
XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
573 |
|
574 |
XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
575 |
|
576 |
XRenderFreePicture (dpy, src); |
577 |
XRenderFreePicture (dpy, dst); |
578 |
XRenderFreePicture (dpy, mask); |
579 |
|
580 |
return img2; |
581 |
} |
582 |
|
583 |
#endif |
584 |
|