… | |
… | |
57 | |
57 | |
58 | return img; |
58 | return img; |
59 | } |
59 | } |
60 | |
60 | |
61 | rxvt_img * |
61 | rxvt_img * |
|
|
62 | rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
|
|
63 | { |
|
|
64 | Display *dpy = s->display->dpy; |
|
|
65 | |
|
|
66 | int width = gdk_pixbuf_get_width (pb); |
|
|
67 | int height = gdk_pixbuf_get_height (pb); |
|
|
68 | |
|
|
69 | if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
|
|
70 | rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
|
|
71 | |
|
|
72 | // since we require rgb24/argb32 formats from xrender we assume |
|
|
73 | // that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
|
|
74 | int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24; |
|
|
75 | |
|
|
76 | int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
|
|
77 | |
|
|
78 | XImage xi; |
|
|
79 | |
|
|
80 | xi.width = width; |
|
|
81 | xi.height = height; |
|
|
82 | xi.xoffset = 0; |
|
|
83 | xi.format = ZPixmap; |
|
|
84 | xi.byte_order = ImageByteOrder (dpy); |
|
|
85 | xi.bitmap_unit = 0; //XY only, unused |
|
|
86 | xi.bitmap_bit_order = 0; //XY only, unused |
|
|
87 | xi.bitmap_pad = BitmapPad (dpy); |
|
|
88 | xi.depth = depth; |
|
|
89 | xi.bytes_per_line = 0; |
|
|
90 | xi.bits_per_pixel = 32; //Z only |
|
|
91 | xi.red_mask = 0x00000000; //Z only, unused |
|
|
92 | xi.green_mask = 0x00000000; //Z only, unused |
|
|
93 | xi.blue_mask = 0x00000000; //Z only, unused |
|
|
94 | xi.obdata = 0; // probably unused |
|
|
95 | |
|
|
96 | bool byte_order_mismatch = byte_order != xi.byte_order; |
|
|
97 | |
|
|
98 | if (!XInitImage (&xi)) |
|
|
99 | rxvt_fatal ("unable to initialise ximage, please report.\n"); |
|
|
100 | |
|
|
101 | if (height > INT_MAX / xi.bytes_per_line) |
|
|
102 | rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); |
|
|
103 | |
|
|
104 | xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); |
|
|
105 | |
|
|
106 | int rowstride = gdk_pixbuf_get_rowstride (pb); |
|
|
107 | |
|
|
108 | assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb)); |
|
|
109 | unsigned char *row = gdk_pixbuf_get_pixels (pb); |
|
|
110 | char *line = xi.data; |
|
|
111 | |
|
|
112 | for (int y = 0; y < height; y++) |
|
|
113 | { |
|
|
114 | unsigned char *src = row; |
|
|
115 | uint32_t *dst = (uint32_t *)line; |
|
|
116 | |
|
|
117 | if (depth == 24) |
|
|
118 | for (int x = 0; x < width; x++) |
|
|
119 | { |
|
|
120 | uint8_t r = *src++; |
|
|
121 | uint8_t g = *src++; |
|
|
122 | uint8_t b = *src++; |
|
|
123 | |
|
|
124 | uint32_t v = (r << 16) | (g << 8) | b; |
|
|
125 | |
|
|
126 | if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
|
|
127 | v = ecb_bswap32 (v); |
|
|
128 | |
|
|
129 | *dst++ = v; |
|
|
130 | } |
|
|
131 | else |
|
|
132 | for (int x = 0; x < width; x++) |
|
|
133 | { |
|
|
134 | uint32_t v = *(uint32_t *)src; src += 4; |
|
|
135 | |
|
|
136 | if (ecb_little_endian ()) |
|
|
137 | v = ecb_bswap32 (v); |
|
|
138 | |
|
|
139 | v = ecb_rotr32 (v, 8); |
|
|
140 | |
|
|
141 | if (byte_order_mismatch) |
|
|
142 | v = ecb_bswap32 (v); |
|
|
143 | |
|
|
144 | *dst++ = v; |
|
|
145 | } |
|
|
146 | |
|
|
147 | row += rowstride; |
|
|
148 | line += xi.bytes_per_line; |
|
|
149 | } |
|
|
150 | |
|
|
151 | rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height); |
|
|
152 | img->alloc (); |
|
|
153 | |
|
|
154 | GC gc = XCreateGC (dpy, img->pm, 0, 0); |
|
|
155 | XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
|
|
156 | XFreeGC (dpy, gc); |
|
|
157 | |
|
|
158 | free (xi.data); |
|
|
159 | |
|
|
160 | return img; |
|
|
161 | } |
|
|
162 | |
|
|
163 | rxvt_img * |
62 | rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
164 | rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
63 | { |
165 | { |
64 | GError *err = 0; |
166 | GError *err = 0; |
65 | GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
167 | GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
66 | |
168 | |
67 | if (!pb) |
169 | if (!pb) |
68 | rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
170 | rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
69 | |
171 | |
70 | rxvt_img *img = new rxvt_img ( |
172 | rxvt_img *img = new_from_pixbuf (s, pb); |
71 | s, |
|
|
72 | XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24), |
|
|
73 | 0, |
|
|
74 | 0, |
|
|
75 | gdk_pixbuf_get_width (pb), |
|
|
76 | gdk_pixbuf_get_height (pb) |
|
|
77 | ); |
|
|
78 | img->alloc (); |
|
|
79 | img->render_pixbuf (pb, 0, 0, img->w, img->h, 0, 0); |
|
|
80 | |
173 | |
81 | g_object_unref (pb); |
174 | g_object_unref (pb); |
82 | |
175 | |
83 | return img; |
176 | return img; |
84 | } |
177 | } |
… | |
… | |
288 | |
381 | |
289 | XRenderFreePicture (dpy, src); |
382 | XRenderFreePicture (dpy, src); |
290 | XRenderFreePicture (dpy, dst); |
383 | XRenderFreePicture (dpy, dst); |
291 | } |
384 | } |
292 | |
385 | |
293 | bool |
|
|
294 | rxvt_img::render_pixbuf (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y) |
|
|
295 | { |
|
|
296 | Display *dpy = s->display->dpy; |
|
|
297 | |
|
|
298 | if (s->visual->c_class != TrueColor) |
|
|
299 | return false; |
|
|
300 | |
|
|
301 | uint32_t red_mask, green_mask, blue_mask, alpha_mask; |
|
|
302 | |
|
|
303 | red_mask = (uint32_t)format->direct.redMask << format->direct.red; |
|
|
304 | green_mask = (uint32_t)format->direct.greenMask << format->direct.green; |
|
|
305 | blue_mask = (uint32_t)format->direct.blueMask << format->direct.blue; |
|
|
306 | alpha_mask = (uint32_t)format->direct.alphaMask << format->direct.alpha; |
|
|
307 | |
|
|
308 | int width_r = ecb_popcount32 (red_mask); |
|
|
309 | int width_g = ecb_popcount32 (green_mask); |
|
|
310 | int width_b = ecb_popcount32 (blue_mask); |
|
|
311 | int width_a = ecb_popcount32 (alpha_mask); |
|
|
312 | |
|
|
313 | if (width_r > 8 || width_g > 8 || width_b > 8 || width_a > 8) |
|
|
314 | return false; |
|
|
315 | |
|
|
316 | int sh_r = ecb_ctz32 (red_mask); |
|
|
317 | int sh_g = ecb_ctz32 (green_mask); |
|
|
318 | int sh_b = ecb_ctz32 (blue_mask); |
|
|
319 | int sh_a = ecb_ctz32 (alpha_mask); |
|
|
320 | |
|
|
321 | if (width > 32767 || height > 32767) |
|
|
322 | return false; |
|
|
323 | |
|
|
324 | XImage *ximage = XCreateImage (dpy, s->visual, format->depth, ZPixmap, 0, 0, |
|
|
325 | width, height, 32, 0); |
|
|
326 | if (!ximage) |
|
|
327 | return false; |
|
|
328 | |
|
|
329 | if (height > INT_MAX / ximage->bytes_per_line |
|
|
330 | || !(ximage->data = (char *)malloc (height * ximage->bytes_per_line))) |
|
|
331 | { |
|
|
332 | XDestroyImage (ximage); |
|
|
333 | return false; |
|
|
334 | } |
|
|
335 | |
|
|
336 | GC gc = XCreateGC (dpy, pm, 0, 0); |
|
|
337 | |
|
|
338 | ximage->byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
|
|
339 | |
|
|
340 | int rowstride = gdk_pixbuf_get_rowstride (pixbuf); |
|
|
341 | int channels = gdk_pixbuf_get_n_channels (pixbuf); |
|
|
342 | unsigned char *row = gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * channels; |
|
|
343 | char *line = ximage->data; |
|
|
344 | |
|
|
345 | for (int y = 0; y < height; y++) |
|
|
346 | { |
|
|
347 | for (int x = 0; x < width; x++) |
|
|
348 | { |
|
|
349 | unsigned char *pixel = row + x * channels; |
|
|
350 | uint32_t value; |
|
|
351 | unsigned char r, g, b, a; |
|
|
352 | |
|
|
353 | if (channels == 4) |
|
|
354 | { |
|
|
355 | a = pixel[3]; |
|
|
356 | r = pixel[0] * a / 0xff; |
|
|
357 | g = pixel[1] * a / 0xff; |
|
|
358 | b = pixel[2] * a / 0xff; |
|
|
359 | } |
|
|
360 | else |
|
|
361 | { |
|
|
362 | a = 0xff; |
|
|
363 | r = pixel[0]; |
|
|
364 | g = pixel[1]; |
|
|
365 | b = pixel[2]; |
|
|
366 | } |
|
|
367 | |
|
|
368 | value = ((r >> (8 - width_r)) << sh_r) |
|
|
369 | | ((g >> (8 - width_g)) << sh_g) |
|
|
370 | | ((b >> (8 - width_b)) << sh_b) |
|
|
371 | | ((a >> (8 - width_a)) << sh_a); |
|
|
372 | |
|
|
373 | if (ximage->bits_per_pixel == 32) |
|
|
374 | ((uint32_t *)line)[x] = value; |
|
|
375 | else |
|
|
376 | XPutPixel (ximage, x, y, value); |
|
|
377 | } |
|
|
378 | |
|
|
379 | row += rowstride; |
|
|
380 | line += ximage->bytes_per_line; |
|
|
381 | } |
|
|
382 | |
|
|
383 | XPutImage (dpy, pm, gc, ximage, 0, 0, dst_x, dst_y, width, height); |
|
|
384 | XDestroyImage (ximage); |
|
|
385 | XFreeGC (dpy, gc); |
|
|
386 | |
|
|
387 | return true; |
|
|
388 | } |
|
|
389 | |
|
|
390 | rxvt_img * |
386 | rxvt_img * |
391 | rxvt_img::clone () |
387 | rxvt_img::clone () |
392 | { |
388 | { |
393 | return new rxvt_img (*this); |
389 | return new rxvt_img (*this); |
|
|
390 | } |
|
|
391 | |
|
|
392 | static XRenderPictFormat * |
|
|
393 | find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
|
|
394 | { |
|
|
395 | if (format->direct.alphaMask) |
|
|
396 | return format; // already has alpha |
|
|
397 | |
|
|
398 | // try to find a suitable alpha format, one bit alpha is enough for our purposes |
|
|
399 | if (format->type == PictTypeDirect) |
|
|
400 | for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
|
|
401 | if (f->direct.alphaMask |
|
|
402 | && f->type == PictTypeDirect |
|
|
403 | && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
|
|
404 | && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
|
|
405 | && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
|
|
406 | return f; |
|
|
407 | |
|
|
408 | // should be a very good fallback |
|
|
409 | return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
394 | } |
410 | } |
395 | |
411 | |
396 | rxvt_img * |
412 | rxvt_img * |
397 | rxvt_img::reify () |
413 | rxvt_img::reify () |
398 | { |
414 | { |
… | |
… | |
403 | |
419 | |
404 | bool alpha = !format->direct.alphaMask |
420 | bool alpha = !format->direct.alphaMask |
405 | && (x || y) |
421 | && (x || y) |
406 | && repeat == RepeatNone; |
422 | && repeat == RepeatNone; |
407 | |
423 | |
408 | rxvt_img *img = new rxvt_img (s, alpha ? XRenderFindStandardFormat (dpy, PictStandardARGB32) : format, 0, 0, w, h, repeat); |
424 | rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
409 | img->alloc (); |
425 | img->alloc (); |
410 | |
426 | |
411 | Picture src = src_picture (); |
427 | Picture src = src_picture (); |
412 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
428 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
413 | |
429 | |