… | |
… | |
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 | 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 | { |
|
|
107 | unsigned char r, g, b, a; |
|
|
108 | unsigned char *data = row; |
|
|
109 | |
|
|
110 | if (depth == 24) |
|
|
111 | for (int x = 0; x < width; x++) |
|
|
112 | { |
|
|
113 | r = *data++; |
|
|
114 | g = *data++; |
|
|
115 | b = *data++; |
|
|
116 | *line++ = 0; |
|
|
117 | *line++ = r; |
|
|
118 | *line++ = g; |
|
|
119 | *line++ = b; |
|
|
120 | } |
|
|
121 | else |
|
|
122 | for (int x = 0; x < width; x++) |
|
|
123 | { |
|
|
124 | r = *data++; |
|
|
125 | g = *data++; |
|
|
126 | b = *data++; |
|
|
127 | a = *data++; |
|
|
128 | *line++ = a; |
|
|
129 | *line++ = r; |
|
|
130 | *line++ = g; |
|
|
131 | *line++ = b; |
|
|
132 | } |
|
|
133 | |
|
|
134 | 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 | |
|
|
142 | GC gc = XCreateGC (dpy, img->pm, 0, 0); |
|
|
143 | XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
|
|
144 | XFreeGC (dpy, gc); |
|
|
145 | |
|
|
146 | free (xi.data); |
|
|
147 | |
|
|
148 | return img; |
|
|
149 | } |
|
|
150 | |
|
|
151 | rxvt_img * |
62 | rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
152 | rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
63 | { |
153 | { |
64 | GError *err = 0; |
154 | GError *err = 0; |
65 | GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
155 | GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
66 | |
156 | |
67 | if (!pb) |
157 | if (!pb) |
68 | rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
158 | rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
69 | |
159 | |
70 | rxvt_img *img = new rxvt_img ( |
160 | 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 | |
161 | |
81 | g_object_unref (pb); |
162 | g_object_unref (pb); |
82 | |
163 | |
83 | return img; |
164 | return img; |
84 | } |
165 | } |
… | |
… | |
288 | |
369 | |
289 | XRenderFreePicture (dpy, src); |
370 | XRenderFreePicture (dpy, src); |
290 | XRenderFreePicture (dpy, dst); |
371 | XRenderFreePicture (dpy, dst); |
291 | } |
372 | } |
292 | |
373 | |
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 * |
374 | rxvt_img * |
391 | rxvt_img::clone () |
375 | rxvt_img::clone () |
392 | { |
376 | { |
393 | return new rxvt_img (*this); |
377 | return new rxvt_img (*this); |
394 | } |
378 | } |
395 | |
|
|
396 | |
379 | |
397 | static XRenderPictFormat * |
380 | static XRenderPictFormat * |
398 | find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
381 | find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
399 | { |
382 | { |
400 | if (format->direct.alphaMask) |
383 | if (format->direct.alphaMask) |