1 /*
2 * Copyright (C) 2004 John Ellis
3 * Copyright (C) 2008 - 2016 The Geeqie Team
4 *
5 * Author: John Ellis
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 */
21
22 #include "main.h"
23 #include "pixbuf_util.h"
24 #include "exif.h"
25 #include "ui_fileops.h"
26
27 #include "icons/icons_inline.h"
28
29 #include <math.h>
30
31
32 /*
33 *-----------------------------------------------------------------------------
34 * png save
35 *-----------------------------------------------------------------------------
36 */
37
pixbuf_to_file_as_png(GdkPixbuf * pixbuf,const gchar * filename)38 gboolean pixbuf_to_file_as_png(GdkPixbuf *pixbuf, const gchar *filename)
39 {
40 GError *error = NULL;
41 gboolean ret;
42
43 if (!pixbuf || !filename) return FALSE;
44
45 ret = gdk_pixbuf_save(pixbuf, filename, "png", &error,
46 "tEXt::Software", GQ_APPNAME " " VERSION, NULL);
47
48 if (error)
49 {
50 log_printf("Error saving png file: %s\n", error->message);
51 g_error_free(error);
52 }
53
54 return ret;
55 }
56
57 /*
58 *-----------------------------------------------------------------------------
59 * jpeg save
60 *-----------------------------------------------------------------------------
61 */
62
pixbuf_to_file_as_jpg(GdkPixbuf * pixbuf,const gchar * filename,gint quality)63 gboolean pixbuf_to_file_as_jpg(GdkPixbuf *pixbuf, const gchar *filename, gint quality)
64 {
65 GError *error = NULL;
66 gchar *qbuf;
67 gboolean ret;
68
69 if (!pixbuf || !filename) return FALSE;
70
71 if (quality == -1) quality = 75;
72 if (quality < 1 || quality > 100)
73 {
74 log_printf("Jpeg not saved, invalid quality %d\n", quality);
75 return FALSE;
76 }
77
78 qbuf = g_strdup_printf("%d", quality);
79 ret = gdk_pixbuf_save(pixbuf, filename, "jpeg", &error, "quality", qbuf, NULL);
80 g_free(qbuf);
81
82 if (error)
83 {
84 log_printf("Error saving jpeg to %s\n%s\n", filename, error->message);
85 g_error_free(error);
86 }
87
88 return ret;
89 }
90
91 /*
92 *-----------------------------------------------------------------------------
93 * pixbuf from inline
94 *-----------------------------------------------------------------------------
95 */
96
97 typedef struct _PixbufInline PixbufInline;
98 struct _PixbufInline
99 {
100 const gchar *key;
101 const guint8 *data;
102 };
103
104 static PixbufInline inline_pixbuf_data[] = {
105 { PIXBUF_INLINE_FOLDER_CLOSED, folder_closed },
106 { PIXBUF_INLINE_FOLDER_LOCKED, folder_locked },
107 { PIXBUF_INLINE_FOLDER_OPEN, folder_open },
108 { PIXBUF_INLINE_FOLDER_UP, folder_up },
109 { PIXBUF_INLINE_SCROLLER, icon_scroller },
110 { PIXBUF_INLINE_BROKEN, icon_broken },
111 { PIXBUF_INLINE_METADATA, icon_metadata },
112 { PIXBUF_INLINE_UNKNOWN, icon_unknown },
113 { PIXBUF_INLINE_VIDEO, icon_video },
114 { PIXBUF_INLINE_COLLECTION, icon_collection },
115 { PIXBUF_INLINE_ICON, gqview_icon },
116 { PIXBUF_INLINE_LOGO, geeqie_logo },
117 { PIXBUF_INLINE_ICON_FLOAT, icon_float },
118 { PIXBUF_INLINE_ICON_THUMB, icon_thumb },
119 { PIXBUF_INLINE_ICON_BOOK, icon_book },
120 { PIXBUF_INLINE_ICON_CONFIG, icon_config },
121 { PIXBUF_INLINE_ICON_TOOLS, icon_tools },
122 { PIXBUF_INLINE_ICON_VIEW, icon_view },
123 { PIXBUF_INLINE_ICON_GUIDELINES, icon_guidelines },
124 { PIXBUF_INLINE_ICON_PANORAMA, icon_panorama },
125 { PIXBUF_INLINE_ICON_MAINTENANCE, icon_maintenance },
126 { PIXBUF_INLINE_ICON_ZOOMFILLHOR, icon_zoomfillhor },
127 { PIXBUF_INLINE_ICON_ZOOMFILLVERT, icon_zoomfillvert },
128 { PIXBUF_INLINE_ICON_HIDETOOLS, icon_hidetools },
129 { PIXBUF_INLINE_ICON_EXIF, icon_exif },
130 { PIXBUF_INLINE_ICON_MARKS, icon_marks },
131 { PIXBUF_INLINE_ICON_INFO, icon_info },
132 { PIXBUF_INLINE_ICON_SORT, icon_sort },
133 { PIXBUF_INLINE_ICON_PDF, icon_pdf },
134 { PIXBUF_INLINE_ICON_DRAW_RECTANGLE, icon_draw_rectangle },
135 { PIXBUF_INLINE_ICON_MOVE, icon_move },
136 { PIXBUF_INLINE_ICON_RENAME, icon_rename },
137 { PIXBUF_INLINE_ICON_SELECT_ALL, icon_select_all },
138 { PIXBUF_INLINE_ICON_SELECT_NONE, icon_select_none },
139 { PIXBUF_INLINE_ICON_SELECT_INVERT, icon_select_invert },
140 { PIXBUF_INLINE_ICON_SELECT_RECTANGLE, icon_select_rectangle },
141 { PIXBUF_INLINE_ICON_FILE_FILTER, icon_file_filter },
142 { PIXBUF_INLINE_ICON_CW, icon_rotate_clockwise },
143 { PIXBUF_INLINE_ICON_CCW, icon_rotate_counter_clockwise },
144 { PIXBUF_INLINE_ICON_180, icon_rotate_180 },
145 { PIXBUF_INLINE_ICON_MIRROR, icon_mirror },
146 { PIXBUF_INLINE_ICON_FLIP, icon_flip },
147 { PIXBUF_INLINE_ICON_ORIGINAL, icon_original },
148 { PIXBUF_INLINE_ICON_TRASH, icon_trash },
149 { PIXBUF_INLINE_ICON_HEIF, icon_heic },
150 { PIXBUF_INLINE_ICON_GRAYSCALE, icon_grayscale },
151 { PIXBUF_INLINE_ICON_EXPOSURE, icon_exposure },
152 { PIXBUF_INLINE_SPLIT_PANE_SYNC, icon_split_pane_sync },
153 { NULL, NULL }
154 };
155
pixbuf_inline(const gchar * key)156 GdkPixbuf *pixbuf_inline(const gchar *key)
157 {
158 gint i;
159
160 if (!key) return NULL;
161
162 i = 0;
163 while (inline_pixbuf_data[i].key)
164 {
165 if (strcmp(inline_pixbuf_data[i].key, key) == 0)
166 {
167 return gdk_pixbuf_new_from_inline(-1, inline_pixbuf_data[i].data, FALSE, NULL);
168 }
169 i++;
170 }
171
172 log_printf("warning: inline pixbuf key \"%s\" not found.\n", key);
173
174 return NULL;
175 }
176
register_stock_icon(const gchar * key,GdkPixbuf * pixbuf)177 static void register_stock_icon(const gchar *key, GdkPixbuf *pixbuf)
178 {
179 static GtkIconFactory *icon_factory = NULL;
180 GtkIconSet *icon_set;
181
182 if (!icon_factory)
183 {
184 icon_factory = gtk_icon_factory_new();
185 gtk_icon_factory_add_default(icon_factory);
186 }
187
188 icon_set = gtk_icon_set_new_from_pixbuf(pixbuf);
189 gtk_icon_factory_add(icon_factory, key, icon_set);
190 }
191
192
pixbuf_inline_register_stock_icons(void)193 void pixbuf_inline_register_stock_icons(void)
194 {
195 gint i;
196
197 i = 0;
198 while (inline_pixbuf_data[i].key)
199 {
200 register_stock_icon(inline_pixbuf_data[i].key, pixbuf_inline(inline_pixbuf_data[i].key));
201 i++;
202 }
203 }
204
register_theme_icon_as_stock(const gchar * key,const gchar * icon)205 gboolean register_theme_icon_as_stock(const gchar *key, const gchar *icon)
206 {
207 GtkIconTheme *icon_theme;
208 GdkPixbuf *pixbuf;
209 GError *error = NULL;
210
211 icon_theme = gtk_icon_theme_get_default();
212
213 if (gtk_icon_theme_has_icon(icon_theme, key)) return FALSE;
214
215 pixbuf = gtk_icon_theme_load_icon(icon_theme,
216 icon, /* icon name */
217 64, /* size */
218 0, /* flags */
219 &error);
220 if (!pixbuf)
221 {
222 if (error)
223 {
224 DEBUG_1("Couldn't load icon %s: %s", icon, error->message);
225 g_error_free(error);
226 error = NULL;
227 }
228
229 if (strchr(icon, '.'))
230 {
231 /* try again without extension */
232 gchar *icon2 = remove_extension_from_path(icon);
233 pixbuf = gtk_icon_theme_load_icon(icon_theme,
234 icon2, /* icon name */
235 64, /* size */
236 0, /* flags */
237 &error);
238 if (error)
239 {
240 DEBUG_1("Couldn't load icon %s: %s", icon2, error->message);
241 g_error_free(error);
242 error = NULL;
243
244 /* try as an absolute path */
245 pixbuf = gdk_pixbuf_new_from_file(icon, &error);
246 if (error)
247 {
248 DEBUG_1("Couldn't load icon as absolute path %s: %s", icon, error->message);
249 g_error_free(error);
250 }
251 }
252 g_free(icon2);
253 }
254 }
255
256 if (!pixbuf) return FALSE;
257
258 register_stock_icon(key, pixbuf);
259 return TRUE;
260 }
261
pixbuf_scale_aspect(gint req_w,gint req_h,gint old_w,gint old_h,gint * new_w,gint * new_h)262 gboolean pixbuf_scale_aspect(gint req_w, gint req_h,
263 gint old_w, gint old_h,
264 gint *new_w, gint *new_h)
265 {
266 if (((gdouble)req_w / old_w) < ((gdouble)req_h / old_h))
267 {
268 *new_w = req_w;
269 *new_h = (gdouble)*new_w / old_w * old_h;
270 if (*new_h < 1) *new_h = 1;
271 }
272 else
273 {
274 *new_h = req_h;
275 *new_w = (gdouble)*new_h / old_h * old_w;
276 if (*new_w < 1) *new_w = 1;
277 }
278
279 return (*new_w != old_w || *new_h != old_h);
280 }
281
pixbuf_fallback(FileData * fd,gint requested_width,gint requested_height)282 GdkPixbuf *pixbuf_fallback(FileData *fd, gint requested_width, gint requested_height)
283 {
284 GdkPixbuf *pixbuf;
285
286 switch (fd->format_class)
287 {
288 case FORMAT_CLASS_UNKNOWN:
289 pixbuf = pixbuf_inline(PIXBUF_INLINE_UNKNOWN);
290 break;
291 case FORMAT_CLASS_META:
292 pixbuf = pixbuf_inline(PIXBUF_INLINE_METADATA);
293 break;
294 case FORMAT_CLASS_VIDEO:
295 pixbuf = pixbuf_inline(PIXBUF_INLINE_VIDEO);
296 break;
297 case FORMAT_CLASS_COLLECTION:
298 pixbuf = pixbuf_inline(PIXBUF_INLINE_COLLECTION);
299 break;
300 case FORMAT_CLASS_DOCUMENT:
301 pixbuf = pixbuf_inline(PIXBUF_INLINE_ICON_PDF);
302 break;
303 default:
304 pixbuf = pixbuf_inline(PIXBUF_INLINE_BROKEN);
305 }
306
307 if (requested_width && requested_height)
308 {
309 gint w = gdk_pixbuf_get_width(pixbuf);
310 gint h = gdk_pixbuf_get_height(pixbuf);
311
312 if (w > requested_width || h > requested_height)
313 {
314 gint nw, nh;
315
316 if (pixbuf_scale_aspect(requested_width, requested_height,
317 w, h, &nw, &nh))
318 {
319 GdkPixbuf *tmp;
320
321 tmp = pixbuf;
322 pixbuf = gdk_pixbuf_scale_simple(tmp, nw, nh, GDK_INTERP_TILES);
323 g_object_unref(G_OBJECT(tmp));
324 }
325 }
326 }
327 return pixbuf;
328 }
329
330
331 /*
332 *-----------------------------------------------------------------------------
333 * misc utils
334 *-----------------------------------------------------------------------------
335 */
336
util_clip_region(gint x,gint y,gint w,gint h,gint clip_x,gint clip_y,gint clip_w,gint clip_h,gint * rx,gint * ry,gint * rw,gint * rh)337 gboolean util_clip_region(gint x, gint y, gint w, gint h,
338 gint clip_x, gint clip_y, gint clip_w, gint clip_h,
339 gint *rx, gint *ry, gint *rw, gint *rh)
340 {
341 if (clip_x + clip_w <= x ||
342 clip_x >= x + w ||
343 clip_y + clip_h <= y ||
344 clip_y >= y + h)
345 {
346 return FALSE;
347 }
348
349 *rx = MAX(x, clip_x);
350 *rw = MIN((x + w), (clip_x + clip_w)) - *rx;
351
352 *ry = MAX(y, clip_y);
353 *rh = MIN((y + h), (clip_y + clip_h)) - *ry;
354
355 return TRUE;
356 }
357
358 /*
359 *-----------------------------------------------------------------------------
360 * pixbuf rotation
361 *-----------------------------------------------------------------------------
362 */
363
pixbuf_copy_block_rotate(guchar * src,gint src_row_stride,gint x,gint y,guchar * dest,gint dest_row_stride,gint w,gint h,gint bytes_per_pixel,gboolean counter_clockwise)364 static void pixbuf_copy_block_rotate(guchar *src, gint src_row_stride, gint x, gint y,
365 guchar *dest, gint dest_row_stride, gint w, gint h,
366 gint bytes_per_pixel, gboolean counter_clockwise)
367 {
368 gint i, j;
369 guchar *sp;
370 guchar *dp;
371
372 for (i = 0; i < h; i++)
373 {
374 sp = src + ((i + y) * src_row_stride) + (x * bytes_per_pixel);
375 for (j = 0; j < w; j++)
376 {
377 if (counter_clockwise)
378 {
379 dp = dest + ((w - j - 1) * dest_row_stride) + (i * bytes_per_pixel);
380 }
381 else
382 {
383 dp = dest + (j * dest_row_stride) + ((h - i - 1) * bytes_per_pixel);
384 }
385 *(dp++) = *(sp++); /* r */
386 *(dp++) = *(sp++); /* g */
387 *(dp++) = *(sp++); /* b */
388 if (bytes_per_pixel == 4) *(dp) = *(sp++); /* a */
389 }
390 }
391
392 }
393
pixbuf_copy_block(guchar * src,gint src_row_stride,gint w,gint h,guchar * dest,gint dest_row_stride,gint x,gint y,gint bytes_per_pixel)394 static void pixbuf_copy_block(guchar *src, gint src_row_stride, gint w, gint h,
395 guchar *dest, gint dest_row_stride, gint x, gint y, gint bytes_per_pixel)
396 {
397 gint i;
398 guchar *sp;
399 guchar *dp;
400
401 for (i = 0; i < h; i++)
402 {
403 sp = src + (i * src_row_stride);
404 dp = dest + ((y + i) * dest_row_stride) + (x * bytes_per_pixel);
405 memcpy(dp, sp, w * bytes_per_pixel);
406 }
407 }
408
409 #define ROTATE_BUFFER_WIDTH 48
410 #define ROTATE_BUFFER_HEIGHT 48
411
412 /*
413 * Returns a copy of pixbuf src rotated 90 degrees clockwise or 90 counterclockwise
414 *
415 */
pixbuf_copy_rotate_90(GdkPixbuf * src,gboolean counter_clockwise)416 GdkPixbuf *pixbuf_copy_rotate_90(GdkPixbuf *src, gboolean counter_clockwise)
417 {
418 GdkPixbuf *dest;
419 gboolean has_alpha;
420 gint sw, sh, srs;
421 gint dw, dh, drs;
422 guchar *s_pix;
423 guchar *d_pix;
424 gint i, j;
425 gint a;
426 GdkPixbuf *buffer;
427 guchar *b_pix;
428 gint brs;
429 gint w, h;
430
431 if (!src) return NULL;
432
433 sw = gdk_pixbuf_get_width(src);
434 sh = gdk_pixbuf_get_height(src);
435 has_alpha = gdk_pixbuf_get_has_alpha(src);
436 srs = gdk_pixbuf_get_rowstride(src);
437 s_pix = gdk_pixbuf_get_pixels(src);
438
439 dw = sh;
440 dh = sw;
441 dest = gdk_pixbuf_new(GDK_COLORSPACE_RGB, has_alpha, 8, dw, dh);
442 drs = gdk_pixbuf_get_rowstride(dest);
443 d_pix = gdk_pixbuf_get_pixels(dest);
444
445 a = (has_alpha ? 4 : 3);
446
447 buffer = gdk_pixbuf_new(GDK_COLORSPACE_RGB, has_alpha, 8,
448 ROTATE_BUFFER_WIDTH, ROTATE_BUFFER_HEIGHT);
449 b_pix = gdk_pixbuf_get_pixels(buffer);
450 brs = gdk_pixbuf_get_rowstride(buffer);
451
452 for (i = 0; i < sh; i+= ROTATE_BUFFER_WIDTH)
453 {
454 w = MIN(ROTATE_BUFFER_WIDTH, (sh - i));
455 for (j = 0; j < sw; j += ROTATE_BUFFER_HEIGHT)
456 {
457 gint x, y;
458
459 h = MIN(ROTATE_BUFFER_HEIGHT, (sw - j));
460 pixbuf_copy_block_rotate(s_pix, srs, j, i,
461 b_pix, brs, h, w,
462 a, counter_clockwise);
463
464 if (counter_clockwise)
465 {
466 x = i;
467 y = sw - h - j;
468 }
469 else
470 {
471 x = sh - w - i;
472 y = j;
473 }
474 pixbuf_copy_block(b_pix, brs, w, h,
475 d_pix, drs, x, y, a);
476 }
477 }
478
479 g_object_unref(buffer);
480
481 #if 0
482 /* this is the simple version of rotation (roughly 2-4x slower) */
483
484 for (i = 0; i < sh; i++)
485 {
486 sp = s_pix + (i * srs);
487 for (j = 0; j < sw; j++)
488 {
489 if (counter_clockwise)
490 {
491 dp = d_pix + ((dh - j - 1) * drs) + (i * a);
492 }
493 else
494 {
495 dp = d_pix + (j * drs) + ((dw - i - 1) * a);
496 }
497
498 *(dp++) = *(sp++); /* r */
499 *(dp++) = *(sp++); /* g */
500 *(dp++) = *(sp++); /* b */
501 if (has_alpha) *(dp) = *(sp++); /* a */
502 }
503 }
504 #endif
505
506 return dest;
507 }
508
509 /*
510 * Returns a copy of pixbuf mirrored and or flipped.
511 * TO do a 180 degree rotations set both mirror and flipped TRUE
512 * if mirror and flip are FALSE, result is a simple copy.
513 */
pixbuf_copy_mirror(GdkPixbuf * src,gboolean mirror,gboolean flip)514 GdkPixbuf *pixbuf_copy_mirror(GdkPixbuf *src, gboolean mirror, gboolean flip)
515 {
516 GdkPixbuf *dest;
517 gboolean has_alpha;
518 gint w, h, srs;
519 gint drs;
520 guchar *s_pix;
521 guchar *d_pix;
522 guchar *sp;
523 guchar *dp;
524 gint i, j;
525 gint a;
526
527 if (!src) return NULL;
528
529 w = gdk_pixbuf_get_width(src);
530 h = gdk_pixbuf_get_height(src);
531 has_alpha = gdk_pixbuf_get_has_alpha(src);
532 srs = gdk_pixbuf_get_rowstride(src);
533 s_pix = gdk_pixbuf_get_pixels(src);
534
535 dest = gdk_pixbuf_new(GDK_COLORSPACE_RGB, has_alpha, 8, w, h);
536 drs = gdk_pixbuf_get_rowstride(dest);
537 d_pix = gdk_pixbuf_get_pixels(dest);
538
539 a = has_alpha ? 4 : 3;
540
541 for (i = 0; i < h; i++)
542 {
543 sp = s_pix + (i * srs);
544 if (flip)
545 {
546 dp = d_pix + ((h - i - 1) * drs);
547 }
548 else
549 {
550 dp = d_pix + (i * drs);
551 }
552 if (mirror)
553 {
554 dp += (w - 1) * a;
555 for (j = 0; j < w; j++)
556 {
557 *(dp++) = *(sp++); /* r */
558 *(dp++) = *(sp++); /* g */
559 *(dp++) = *(sp++); /* b */
560 if (has_alpha) *(dp) = *(sp++); /* a */
561 dp -= (a + 3);
562 }
563 }
564 else
565 {
566 for (j = 0; j < w; j++)
567 {
568 *(dp++) = *(sp++); /* r */
569 *(dp++) = *(sp++); /* g */
570 *(dp++) = *(sp++); /* b */
571 if (has_alpha) *(dp++) = *(sp++); /* a */
572 }
573 }
574 }
575
576 return dest;
577 }
578
pixbuf_apply_orientation(GdkPixbuf * pixbuf,gint orientation)579 GdkPixbuf *pixbuf_apply_orientation(GdkPixbuf *pixbuf, gint orientation)
580 {
581 GdkPixbuf *dest;
582 GdkPixbuf *tmp = NULL;
583
584 switch (orientation)
585 {
586 case EXIF_ORIENTATION_TOP_LEFT:
587 dest = gdk_pixbuf_copy(pixbuf);
588 break;
589 case EXIF_ORIENTATION_TOP_RIGHT:
590 /* mirrored */
591 dest = pixbuf_copy_mirror(pixbuf, TRUE, FALSE);
592 break;
593 case EXIF_ORIENTATION_BOTTOM_RIGHT:
594 /* upside down */
595 dest = pixbuf_copy_mirror(pixbuf, TRUE, TRUE);
596 break;
597 case EXIF_ORIENTATION_BOTTOM_LEFT:
598 /* flipped */
599 dest = pixbuf_copy_mirror(pixbuf, FALSE, TRUE);
600 break;
601 case EXIF_ORIENTATION_LEFT_TOP:
602 tmp = pixbuf_copy_mirror(pixbuf, FALSE, TRUE);
603 dest = pixbuf_copy_rotate_90(tmp, FALSE);
604 break;
605 case EXIF_ORIENTATION_RIGHT_TOP:
606 /* rotated -90 (270) */
607 dest = pixbuf_copy_rotate_90(pixbuf, FALSE);
608 break;
609 case EXIF_ORIENTATION_RIGHT_BOTTOM:
610 tmp = pixbuf_copy_mirror(pixbuf, FALSE, TRUE);
611 dest = pixbuf_copy_rotate_90(tmp, TRUE);
612 break;
613 case EXIF_ORIENTATION_LEFT_BOTTOM:
614 /* rotated 90 */
615 dest = pixbuf_copy_rotate_90(pixbuf, TRUE);
616 break;
617 default:
618 dest = gdk_pixbuf_copy(pixbuf);
619 break;
620 }
621 if (tmp) g_object_unref(tmp);
622 return dest;
623
624 }
625
626
627 /*
628 *-----------------------------------------------------------------------------
629 * pixbuf drawing (rectangles)
630 *-----------------------------------------------------------------------------
631 */
632
633 /*
634 * Fills region of pixbuf at x,y over w,h
635 * with colors red (r), green (g), blue (b)
636 * applying alpha (a), use a=255 for solid.
637 */
pixbuf_draw_rect_fill(GdkPixbuf * pb,gint x,gint y,gint w,gint h,gint r,gint g,gint b,gint a)638 void pixbuf_draw_rect_fill(GdkPixbuf *pb,
639 gint x, gint y, gint w, gint h,
640 gint r, gint g, gint b, gint a)
641 {
642 gboolean has_alpha;
643 gint pw, ph, prs;
644 guchar *p_pix;
645 guchar *pp;
646 gint i, j;
647
648 if (!pb) return;
649
650 pw = gdk_pixbuf_get_width(pb);
651 ph = gdk_pixbuf_get_height(pb);
652
653 if (x < 0 || x + w > pw) return;
654 if (y < 0 || y + h > ph) return;
655
656 has_alpha = gdk_pixbuf_get_has_alpha(pb);
657 prs = gdk_pixbuf_get_rowstride(pb);
658 p_pix = gdk_pixbuf_get_pixels(pb);
659
660 for (i = 0; i < h; i++)
661 {
662 pp = p_pix + (y + i) * prs + (x * (has_alpha ? 4 : 3));
663 for (j = 0; j < w; j++)
664 {
665 *pp = (r * a + *pp * (256-a)) >> 8;
666 pp++;
667 *pp = (g * a + *pp * (256-a)) >> 8;
668 pp++;
669 *pp = (b * a + *pp * (256-a)) >> 8;
670 pp++;
671 if (has_alpha) pp++;
672 }
673 }
674 }
675
pixbuf_draw_rect(GdkPixbuf * pb,gint x,gint y,gint w,gint h,gint r,gint g,gint b,gint a,gint left,gint right,gint top,gint bottom)676 void pixbuf_draw_rect(GdkPixbuf *pb,
677 gint x, gint y, gint w, gint h,
678 gint r, gint g, gint b, gint a,
679 gint left, gint right, gint top, gint bottom)
680 {
681 pixbuf_draw_rect_fill(pb, x + left, y, w - left - right, top,
682 r, g, b ,a);
683 pixbuf_draw_rect_fill(pb, x + w - right, y, right, h,
684 r, g, b ,a);
685 pixbuf_draw_rect_fill(pb, x + left, y + h - bottom, w - left - right, bottom,
686 r, g, b ,a);
687 pixbuf_draw_rect_fill(pb, x, y, left, h,
688 r, g, b ,a);
689 }
690
pixbuf_set_rect_fill(GdkPixbuf * pb,gint x,gint y,gint w,gint h,gint r,gint g,gint b,gint a)691 void pixbuf_set_rect_fill(GdkPixbuf *pb,
692 gint x, gint y, gint w, gint h,
693 gint r, gint g, gint b, gint a)
694 {
695 gboolean has_alpha;
696 gint pw, ph, prs;
697 guchar *p_pix;
698 guchar *pp;
699 gint i, j;
700
701 if (!pb) return;
702
703 pw = gdk_pixbuf_get_width(pb);
704 ph = gdk_pixbuf_get_height(pb);
705
706 if (x < 0 || x + w > pw) return;
707 if (y < 0 || y + h > ph) return;
708
709 has_alpha = gdk_pixbuf_get_has_alpha(pb);
710 prs = gdk_pixbuf_get_rowstride(pb);
711 p_pix = gdk_pixbuf_get_pixels(pb);
712
713 for (i = 0; i < h; i++)
714 {
715 pp = p_pix + (y + i) * prs + (x * (has_alpha ? 4 : 3));
716 for (j = 0; j < w; j++)
717 {
718 *pp = r; pp++;
719 *pp = g; pp++;
720 *pp = b; pp++;
721 if (has_alpha) { *pp = a; pp++; }
722 }
723 }
724 }
725
pixbuf_set_rect(GdkPixbuf * pb,gint x,gint y,gint w,gint h,gint r,gint g,gint b,gint a,gint left,gint right,gint top,gint bottom)726 void pixbuf_set_rect(GdkPixbuf *pb,
727 gint x, gint y, gint w, gint h,
728 gint r, gint g, gint b, gint a,
729 gint left, gint right, gint top, gint bottom)
730 {
731 pixbuf_set_rect_fill(pb, x + left, y, w - left - right, top,
732 r, g, b ,a);
733 pixbuf_set_rect_fill(pb, x + w - right, y, right, h,
734 r, g, b ,a);
735 pixbuf_set_rect_fill(pb, x + left, y + h - bottom, w - left - right, bottom,
736 r, g, b ,a);
737 pixbuf_set_rect_fill(pb, x, y, left, h,
738 r, g, b ,a);
739 }
740
pixbuf_pixel_set(GdkPixbuf * pb,gint x,gint y,gint r,gint g,gint b,gint a)741 void pixbuf_pixel_set(GdkPixbuf *pb, gint x, gint y, gint r, gint g, gint b, gint a)
742 {
743 guchar *buf;
744 gboolean has_alpha;
745 gint rowstride;
746 guchar *p;
747
748 if (x < 0 || x >= gdk_pixbuf_get_width(pb) ||
749 y < 0 || y >= gdk_pixbuf_get_height(pb)) return;
750
751 buf = gdk_pixbuf_get_pixels(pb);
752 has_alpha = gdk_pixbuf_get_has_alpha(pb);
753 rowstride = gdk_pixbuf_get_rowstride(pb);
754
755 p = buf + (y * rowstride) + (x * (has_alpha ? 4 : 3));
756 *p = r; p++;
757 *p = g; p++;
758 *p = b; p++;
759 if (has_alpha) *p = a;
760 }
761
762
763 /*
764 *-----------------------------------------------------------------------------
765 * pixbuf text rendering
766 *-----------------------------------------------------------------------------
767 */
768
pixbuf_copy_font(GdkPixbuf * src,gint sx,gint sy,GdkPixbuf * dest,gint dx,gint dy,gint w,gint h,guint8 r,guint8 g,guint8 b,guint8 a)769 static void pixbuf_copy_font(GdkPixbuf *src, gint sx, gint sy,
770 GdkPixbuf *dest, gint dx, gint dy,
771 gint w, gint h,
772 guint8 r, guint8 g, guint8 b, guint8 a)
773 {
774 gint sw, sh, srs;
775 gboolean s_alpha;
776 gint s_step;
777 guchar *s_pix;
778 gint dw, dh, drs;
779 gboolean d_alpha;
780 gint d_step;
781 guchar *d_pix;
782
783 guchar *sp;
784 guchar *dp;
785 gint i, j;
786
787 if (!src || !dest) return;
788
789 sw = gdk_pixbuf_get_width(src);
790 sh = gdk_pixbuf_get_height(src);
791
792 if (sx < 0 || sx + w > sw) return;
793 if (sy < 0 || sy + h > sh) return;
794
795 dw = gdk_pixbuf_get_width(dest);
796 dh = gdk_pixbuf_get_height(dest);
797
798 if (dx < 0 || dx + w > dw) return;
799 if (dy < 0 || dy + h > dh) return;
800
801 s_alpha = gdk_pixbuf_get_has_alpha(src);
802 d_alpha = gdk_pixbuf_get_has_alpha(dest);
803 srs = gdk_pixbuf_get_rowstride(src);
804 drs = gdk_pixbuf_get_rowstride(dest);
805 s_pix = gdk_pixbuf_get_pixels(src);
806 d_pix = gdk_pixbuf_get_pixels(dest);
807
808 s_step = (s_alpha) ? 4 : 3;
809 d_step = (d_alpha) ? 4 : 3;
810
811 for (i = 0; i < h; i++)
812 {
813 sp = s_pix + (sy + i) * srs + sx * s_step;
814 dp = d_pix + (dy + i) * drs + dx * d_step;
815 for (j = 0; j < w; j++)
816 {
817 if (*sp)
818 {
819 guint8 asub;
820
821 asub = a * sp[0] / 255;
822 *dp = (r * asub + *dp * (256-asub)) >> 8;
823 dp++;
824 asub = a * sp[1] / 255;
825 *dp = (g * asub + *dp * (256-asub)) >> 8;
826 dp++;
827 asub = a * sp[2] / 255;
828 *dp = (b * asub + *dp * (256-asub)) >> 8;
829 dp++;
830
831 if (d_alpha)
832 {
833 *dp = MAX(*dp, a * ((sp[0] + sp[1] + sp[2]) / 3) / 255);
834 dp++;
835 }
836 }
837 else
838 {
839 dp += d_step;
840 }
841
842 sp += s_step;
843 }
844 }
845 }
846
pixbuf_draw_layout(GdkPixbuf * pixbuf,PangoLayout * layout,GtkWidget * widget,gint x,gint y,guint8 r,guint8 g,guint8 b,guint8 a)847 void pixbuf_draw_layout(GdkPixbuf *pixbuf, PangoLayout *layout, GtkWidget *widget,
848 gint x, gint y,
849 guint8 r, guint8 g, guint8 b, guint8 a)
850 {
851 GdkPixbuf *buffer;
852 gint w, h;
853 gint sx, sy;
854 gint dw, dh;
855 cairo_surface_t *source;
856 cairo_t *cr;
857
858 pango_layout_get_pixel_size(layout, &w, &h);
859 if (w < 1 || h < 1) return;
860
861 source = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w, h);
862
863 cr = cairo_create (source);
864 cairo_set_source_rgb(cr, 0, 0, 0);
865 cairo_rectangle (cr, 0, 0, w, h);
866 cairo_fill (cr);
867 cairo_set_source_rgb(cr, 1, 1, 1);
868 pango_cairo_show_layout (cr, layout);
869 cairo_destroy (cr);
870
871 buffer = gdk_pixbuf_new_from_data (cairo_image_surface_get_data (source),
872 GDK_COLORSPACE_RGB,
873 cairo_image_surface_get_format (source) == CAIRO_FORMAT_ARGB32,
874 8,
875 cairo_image_surface_get_width (source),
876 cairo_image_surface_get_height (source),
877 cairo_image_surface_get_stride (source),
878 NULL,
879 NULL);
880
881 sx = 0;
882 sy = 0;
883 dw = gdk_pixbuf_get_width(pixbuf);
884 dh = gdk_pixbuf_get_height(pixbuf);
885
886 if (x < 0)
887 {
888 w += x;
889 sx = -x;
890 x = 0;
891 }
892
893 if (y < 0)
894 {
895 h += y;
896 sy = -y;
897 y = 0;
898 }
899
900 if (x + w > dw) w = dw - x;
901 if (y + h > dh) h = dh - y;
902
903 pixbuf_copy_font(buffer, sx, sy,
904 pixbuf, x, y, w, h,
905 r, g, b, a);
906
907 g_object_unref(buffer);
908 cairo_surface_destroy(source);
909 }
910
911 /*
912 *-----------------------------------------------------------------------------
913 * pixbuf drawing (triangle)
914 *-----------------------------------------------------------------------------
915 */
916
util_clip_triangle(gint x1,gint y1,gint x2,gint y2,gint x3,gint y3,gint * rx,gint * ry,gint * rw,gint * rh)917 void util_clip_triangle(gint x1, gint y1, gint x2, gint y2, gint x3, gint y3,
918 gint *rx, gint *ry, gint *rw, gint *rh)
919 {
920 gint tx, ty, tw, th;
921
922 tx = MIN(x1, x2);
923 tx = MIN(tx, x3);
924 ty = MIN(y1, y2);
925 ty = MIN(ty, y3);
926 tw = MAX(abs(x1 - x2), abs(x2 - x3));
927 tw = MAX(tw, abs(x3 - x1));
928 th = MAX(abs(y1 - y2), abs(y2 - y3));
929 th = MAX(th, abs(y3 - y1));
930
931 *rx = tx;
932 *ry = ty;
933 *rw = tw;
934 *rh = th;
935 }
936
pixbuf_draw_triangle(GdkPixbuf * pb,gint clip_x,gint clip_y,gint clip_w,gint clip_h,gint x1,gint y1,gint x2,gint y2,gint x3,gint y3,guint8 r,guint8 g,guint8 b,guint8 a)937 void pixbuf_draw_triangle(GdkPixbuf *pb,
938 gint clip_x, gint clip_y, gint clip_w, gint clip_h,
939 gint x1, gint y1, gint x2, gint y2, gint x3, gint y3,
940 guint8 r, guint8 g, guint8 b, guint8 a)
941 {
942 gboolean has_alpha;
943 gint pw, ph, prs;
944 gint rx, ry, rw, rh;
945 gint tx, ty, tw, th;
946 gint fx1, fy1;
947 gint fx2, fy2;
948 gint fw, fh;
949 guchar *p_pix;
950 guchar *pp;
951 gint p_step;
952 gdouble slope1, slope2;
953 gint slope1_x, slope1_y;
954 gint y;
955 gint t;
956 gboolean middle = FALSE;
957
958 if (!pb) return;
959
960 pw = gdk_pixbuf_get_width(pb);
961 ph = gdk_pixbuf_get_height(pb);
962
963 if (!util_clip_region(0, 0, pw, ph,
964 clip_x, clip_y, clip_w, clip_h,
965 &rx, &ry, &rw, &rh)) return;
966
967 util_clip_triangle(x1, y1, x2, y2, x3, y3,
968 &tx, &ty, &tw, &th);
969
970 if (!util_clip_region(rx, ry, rw, rh,
971 tx, ty, tw, th,
972 &fx1, &fy1, &fw, &fh)) return;
973 fx2 = fx1 + fw;
974 fy2 = fy1 + fh;
975
976 has_alpha = gdk_pixbuf_get_has_alpha(pb);
977 prs = gdk_pixbuf_get_rowstride(pb);
978 p_pix = gdk_pixbuf_get_pixels(pb);
979
980 p_step = (has_alpha) ? 4 : 3;
981
982 if (y1 > y2)
983 {
984 t = x1; x1 = x2; x2 = t;
985 t = y1; y1 = y2; y2 = t;
986 }
987 if (y2 > y3)
988 {
989 t = x2; x2 = x3; x3 = t;
990 t = y2; y2 = y3; y3 = t;
991 }
992 if (y1 > y2)
993 {
994 t = x1; x1 = x2; x2 = t;
995 t = y1; y1 = y2; y2 = t;
996 }
997
998 slope1 = (gdouble)(y2 - y1);
999 if (slope1) slope1 = (gdouble)(x2 - x1) / slope1;
1000 slope1_x = x1;
1001 slope1_y = y1;
1002 slope2 = (gdouble)(y3 - y1);
1003 if (slope2) slope2 = (gdouble)(x3 - x1) / slope2;
1004
1005 for (y = fy1; y < fy2; y++)
1006 {
1007 gint xa, xb;
1008
1009 if (!middle && y > y2)
1010 {
1011 slope1 = (gdouble)(y3 - y2);
1012 if (slope1) slope1 = (gdouble)(x3 - x2) / slope1;
1013 slope1_x = x2;
1014 slope1_y = y2;
1015
1016 middle = TRUE;
1017 }
1018
1019 xa = slope1_x + ((gdouble)slope1 * (y - slope1_y) + 0.5);
1020 xb = x1 + ((gdouble)slope2 * (y - y1) + 0.5);
1021
1022 if (xa > xb)
1023 {
1024 t = xa; xa = xb; xb = t;
1025 }
1026
1027 xa = CLAMP(xa, fx1, fx2);
1028 xb = CLAMP(xb, fx1, fx2);
1029
1030 pp = p_pix + y * prs + xa * p_step;
1031
1032 while (xa < xb)
1033 {
1034 *pp = (r * a + *pp * (256-a)) >> 8;
1035 pp++;
1036 *pp = (g * a + *pp * (256-a)) >> 8;
1037 pp++;
1038 *pp = (b * a + *pp * (256-a)) >> 8;
1039 pp++;
1040 if (has_alpha) pp++;
1041
1042 xa++;
1043 }
1044 }
1045 }
1046
1047 /*
1048 *-----------------------------------------------------------------------------
1049 * pixbuf drawing (line)
1050 *-----------------------------------------------------------------------------
1051 */
1052
util_clip_line(gdouble clip_x,gdouble clip_y,gdouble clip_w,gdouble clip_h,gdouble x1,gdouble y1,gdouble x2,gdouble y2,gdouble * rx1,gdouble * ry1,gdouble * rx2,gdouble * ry2)1053 static gboolean util_clip_line(gdouble clip_x, gdouble clip_y, gdouble clip_w, gdouble clip_h,
1054 gdouble x1, gdouble y1, gdouble x2, gdouble y2,
1055 gdouble *rx1, gdouble *ry1, gdouble *rx2, gdouble *ry2)
1056 {
1057 gboolean flip = FALSE;
1058 gdouble d;
1059
1060 if (x1 > x2)
1061 {
1062 gdouble t;
1063
1064 t = x1; x1 = x2; x2 = t;
1065 t = y1; y1 = y2; y2 = t;
1066 flip = TRUE;
1067 }
1068
1069 if (x2 < clip_x || x1 > clip_x + clip_w) return FALSE;
1070
1071 if (y1 < y2)
1072 {
1073 if (y2 < clip_y || y1 > clip_y + clip_h) return FALSE;
1074 }
1075 else
1076 {
1077 if (y1 < clip_y || y2 > clip_y + clip_h) return FALSE;
1078 }
1079
1080 d = x2 - x1;
1081 if (d > 0.0)
1082 {
1083 gdouble slope;
1084
1085 slope = (y2 - y1) / d;
1086 if (x1 < clip_x)
1087 {
1088 y1 = y1 + slope * (clip_x - x1);
1089 x1 = clip_x;
1090 }
1091 if (x2 > clip_x + clip_w)
1092 {
1093 y2 = y2 + slope * (clip_x + clip_w - x2);
1094 x2 = clip_x + clip_w;
1095 }
1096 }
1097
1098 if (y1 < y2)
1099 {
1100 if (y2 < clip_y || y1 > clip_y + clip_h) return FALSE;
1101 }
1102 else
1103 {
1104 gdouble t;
1105
1106 if (y1 < clip_y || y2 > clip_y + clip_h) return FALSE;
1107
1108 t = x1; x1 = x2; x2 = t;
1109 t = y1; y1 = y2; y2 = t;
1110 flip = !flip;
1111 }
1112
1113 d = y2 - y1;
1114 if (d > 0.0)
1115 {
1116 gdouble slope;
1117
1118 slope = (x2 - x1) / d;
1119 if (y1 < clip_y)
1120 {
1121 x1 = x1 + slope * (clip_y - y1);
1122 y1 = clip_y;
1123 }
1124 if (y2 > clip_y + clip_h)
1125 {
1126 x2 = x2 + slope * (clip_y + clip_h - y2);
1127 y2 = clip_y + clip_h;
1128 }
1129 }
1130
1131 if (flip)
1132 {
1133 *rx1 = x2;
1134 *ry1 = y2;
1135 *rx2 = x1;
1136 *ry2 = y1;
1137 }
1138 else
1139 {
1140 *rx1 = x1;
1141 *ry1 = y1;
1142 *rx2 = x2;
1143 *ry2 = y2;
1144 }
1145
1146 return TRUE;
1147 }
1148
pixbuf_draw_line(GdkPixbuf * pb,gint clip_x,gint clip_y,gint clip_w,gint clip_h,gint x1,gint y1,gint x2,gint y2,guint8 r,guint8 g,guint8 b,guint8 a)1149 void pixbuf_draw_line(GdkPixbuf *pb,
1150 gint clip_x, gint clip_y, gint clip_w, gint clip_h,
1151 gint x1, gint y1, gint x2, gint y2,
1152 guint8 r, guint8 g, guint8 b, guint8 a)
1153 {
1154 gboolean has_alpha;
1155 gint pw, ph, prs;
1156 gint rx, ry, rw, rh;
1157 gdouble rx1, ry1, rx2, ry2;
1158 guchar *p_pix;
1159 guchar *pp;
1160 gint p_step;
1161 gdouble slope;
1162 gdouble x, y;
1163 gint px, py;
1164 gint cx1, cy1, cx2, cy2;
1165
1166 if (!pb) return;
1167
1168 pw = gdk_pixbuf_get_width(pb);
1169 ph = gdk_pixbuf_get_height(pb);
1170
1171 if (!util_clip_region(0, 0, pw, ph,
1172 clip_x, clip_y, clip_w, clip_h,
1173 &rx, &ry, &rw, &rh)) return;
1174 if (!util_clip_line((gdouble)rx, (gdouble)ry, (gdouble)rw, (gdouble)rh,
1175 (gdouble)x1, (gdouble)y1, (gdouble)x2, (gdouble)y2,
1176 &rx1, &ry1, &rx2, &ry2)) return;
1177
1178 cx1 = rx;
1179 cy1 = ry;
1180 cx2 = rx + rw;
1181 cy2 = ry + rh;
1182
1183 has_alpha = gdk_pixbuf_get_has_alpha(pb);
1184 prs = gdk_pixbuf_get_rowstride(pb);
1185 p_pix = gdk_pixbuf_get_pixels(pb);
1186
1187 p_step = (has_alpha) ? 4 : 3;
1188
1189 if (fabs(rx2 - rx1) > fabs(ry2 - ry1))
1190 {
1191 if (rx1 > rx2)
1192 {
1193 gdouble t;
1194 t = rx1; rx1 = rx2; rx2 = t;
1195 t = ry1; ry1 = ry2; ry2 = t;
1196 }
1197
1198 slope = rx2 - rx1;
1199 if (slope != 0.0) slope = (ry2 - ry1) / slope;
1200 for (x = rx1; x < rx2; x += 1.0)
1201 {
1202 px = (gint)(x + 0.5);
1203 py = (gint)(ry1 + (x - rx1) * slope + 0.5);
1204
1205 if (px >= cx1 && px < cx2 && py >= cy1 && py < cy2)
1206 {
1207 pp = p_pix + py * prs + px * p_step;
1208 *pp = (r * a + *pp * (256-a)) >> 8;
1209 pp++;
1210 *pp = (g * a + *pp * (256-a)) >> 8;
1211 pp++;
1212 *pp = (b * a + *pp * (256-a)) >> 8;
1213 }
1214 }
1215 }
1216 else
1217 {
1218 if (ry1 > ry2)
1219 {
1220 gdouble t;
1221 t = rx1; rx1 = rx2; rx2 = t;
1222 t = ry1; ry1 = ry2; ry2 = t;
1223 }
1224
1225 slope = ry2 - ry1;
1226 if (slope != 0.0) slope = (rx2 - rx1) / slope;
1227 for (y = ry1; y < ry2; y += 1.0)
1228 {
1229 px = (gint)(rx1 + (y - ry1) * slope + 0.5);
1230 py = (gint)(y + 0.5);
1231
1232 if (px >= cx1 && px < cx2 && py >= cy1 && py < cy2)
1233 {
1234 pp = p_pix + py * prs + px * p_step;
1235 *pp = (r * a + *pp * (256-a)) >> 8;
1236 pp++;
1237 *pp = (g * a + *pp * (256-a)) >> 8;
1238 pp++;
1239 *pp = (b * a + *pp * (256-a)) >> 8;
1240 }
1241 }
1242 }
1243 }
1244
1245 /*
1246 *-----------------------------------------------------------------------------
1247 * pixbuf drawing (fades and shadows)
1248 *-----------------------------------------------------------------------------
1249 */
1250
pixbuf_draw_fade_linear(guchar * p_pix,gint prs,gboolean has_alpha,gint s,gboolean vertical,gint border,gint x1,gint y1,gint x2,gint y2,guint8 r,guint8 g,guint8 b,guint8 a)1251 static void pixbuf_draw_fade_linear(guchar *p_pix, gint prs, gboolean has_alpha,
1252 gint s, gboolean vertical, gint border,
1253 gint x1, gint y1, gint x2, gint y2,
1254 guint8 r, guint8 g, guint8 b, guint8 a)
1255 {
1256 guchar *pp;
1257 gint p_step;
1258 guint8 n = a;
1259 gint i, j;
1260
1261 p_step = (has_alpha) ? 4 : 3;
1262 for (j = y1; j < y2; j++)
1263 {
1264 pp = p_pix + j * prs + x1 * p_step;
1265 if (!vertical) n = a - a * abs(j - s) / border;
1266 for (i = x1; i < x2; i++)
1267 {
1268 if (vertical) n = a - a * abs(i - s) / border;
1269 *pp = (r * n + *pp * (256-n)) >> 8;
1270 pp++;
1271 *pp = (g * n + *pp * (256-n)) >> 8;
1272 pp++;
1273 *pp = (b * n + *pp * (256-n)) >> 8;
1274 pp++;
1275 if (has_alpha) pp++;
1276 }
1277 }
1278 }
1279
pixbuf_draw_fade_radius(guchar * p_pix,gint prs,gboolean has_alpha,gint sx,gint sy,gint border,gint x1,gint y1,gint x2,gint y2,guint8 r,guint8 g,guint8 b,guint8 a)1280 static void pixbuf_draw_fade_radius(guchar *p_pix, gint prs, gboolean has_alpha,
1281 gint sx, gint sy, gint border,
1282 gint x1, gint y1, gint x2, gint y2,
1283 guint8 r, guint8 g, guint8 b, guint8 a)
1284 {
1285 guchar *pp;
1286 gint p_step;
1287 gint i, j;
1288
1289 p_step = (has_alpha) ? 4 : 3;
1290 for (j = y1; j < y2; j++)
1291 {
1292 pp = p_pix + j * prs + x1 * p_step;
1293 for (i = x1; i < x2; i++)
1294 {
1295 guint8 n;
1296 gint r;
1297
1298 r = MIN(border, (gint)sqrt((i-sx)*(i-sx) + (j-sy)*(j-sy)));
1299 n = a - a * r / border;
1300 *pp = (r * n + *pp * (256-n)) >> 8;
1301 pp++;
1302 *pp = (g * n + *pp * (256-n)) >> 8;
1303 pp++;
1304 *pp = (b * n + *pp * (256-n)) >> 8;
1305 pp++;
1306 if (has_alpha) pp++;
1307 }
1308 }
1309 }
1310
pixbuf_draw_shadow(GdkPixbuf * pb,gint clip_x,gint clip_y,gint clip_w,gint clip_h,gint x,gint y,gint w,gint h,gint border,guint8 r,guint8 g,guint8 b,guint8 a)1311 void pixbuf_draw_shadow(GdkPixbuf *pb,
1312 gint clip_x, gint clip_y, gint clip_w, gint clip_h,
1313 gint x, gint y, gint w, gint h, gint border,
1314 guint8 r, guint8 g, guint8 b, guint8 a)
1315 {
1316 gint has_alpha;
1317 gint pw, ph, prs;
1318 gint rx, ry, rw, rh;
1319 gint fx, fy, fw, fh;
1320 guchar *p_pix;
1321
1322 if (!pb) return;
1323
1324 pw = gdk_pixbuf_get_width(pb);
1325 ph = gdk_pixbuf_get_height(pb);
1326
1327 if (!util_clip_region(0, 0, pw, ph,
1328 clip_x, clip_y, clip_w, clip_h,
1329 &rx, &ry, &rw, &rh)) return;
1330
1331 has_alpha = gdk_pixbuf_get_has_alpha(pb);
1332 prs = gdk_pixbuf_get_rowstride(pb);
1333 p_pix = gdk_pixbuf_get_pixels(pb);
1334
1335 if (util_clip_region(x + border, y + border, w - border * 2, h - border * 2,
1336 rx, ry, rw, rh,
1337 &fx, &fy, &fw, &fh))
1338 {
1339 pixbuf_draw_rect_fill(pb, fx, fy, fw, fh, r, g, b, a);
1340 }
1341
1342 if (border < 1) return;
1343
1344 if (util_clip_region(x, y + border, border, h - border * 2,
1345 rx, ry, rw, rh,
1346 &fx, &fy, &fw, &fh))
1347 {
1348 pixbuf_draw_fade_linear(p_pix, prs, has_alpha,
1349 x + border, TRUE, border,
1350 fx, fy, fx + fw, fy + fh,
1351 r, g, b, a);
1352 }
1353 if (util_clip_region(x + w - border, y + border, border, h - border * 2,
1354 rx, ry, rw, rh,
1355 &fx, &fy, &fw, &fh))
1356 {
1357 pixbuf_draw_fade_linear(p_pix, prs, has_alpha,
1358 x + w - border, TRUE, border,
1359 fx, fy, fx + fw, fy + fh,
1360 r, g, b, a);
1361 }
1362 if (util_clip_region(x + border, y, w - border * 2, border,
1363 rx, ry, rw, rh,
1364 &fx, &fy, &fw, &fh))
1365 {
1366 pixbuf_draw_fade_linear(p_pix, prs, has_alpha,
1367 y + border, FALSE, border,
1368 fx, fy, fx + fw, fy + fh,
1369 r, g, b, a);
1370 }
1371 if (util_clip_region(x + border, y + h - border, w - border * 2, border,
1372 rx, ry, rw, rh,
1373 &fx, &fy, &fw, &fh))
1374 {
1375 pixbuf_draw_fade_linear(p_pix, prs, has_alpha,
1376 y + h - border, FALSE, border,
1377 fx, fy, fx + fw, fy + fh,
1378 r, g, b, a);
1379 }
1380 if (util_clip_region(x, y, border, border,
1381 rx, ry, rw, rh,
1382 &fx, &fy, &fw, &fh))
1383 {
1384 pixbuf_draw_fade_radius(p_pix, prs, has_alpha,
1385 x + border, y + border, border,
1386 fx, fy, fx + fw, fy + fh,
1387 r, g, b, a);
1388 }
1389 if (util_clip_region(x + w - border, y, border, border,
1390 rx, ry, rw, rh,
1391 &fx, &fy, &fw, &fh))
1392 {
1393 pixbuf_draw_fade_radius(p_pix, prs, has_alpha,
1394 x + w - border, y + border, border,
1395 fx, fy, fx + fw, fy + fh,
1396 r, g, b, a);
1397 }
1398 if (util_clip_region(x, y + h - border, border, border,
1399 rx, ry, rw, rh,
1400 &fx, &fy, &fw, &fh))
1401 {
1402 pixbuf_draw_fade_radius(p_pix, prs, has_alpha,
1403 x + border, y + h - border, border,
1404 fx, fy, fx + fw, fy + fh,
1405 r, g, b, a);
1406 }
1407 if (util_clip_region(x + w - border, y + h - border, border, border,
1408 rx, ry, rw, rh,
1409 &fx, &fy, &fw, &fh))
1410 {
1411 pixbuf_draw_fade_radius(p_pix, prs, has_alpha,
1412 x + w - border, y + h - border, border,
1413 fx, fy, fx + fw, fy + fh,
1414 r, g, b, a);
1415 }
1416 }
1417
1418
1419 /*
1420 *-----------------------------------------------------------------------------
1421 * pixbuf color alterations
1422 *-----------------------------------------------------------------------------
1423 */
1424
pixbuf_desaturate_rect(GdkPixbuf * pb,gint x,gint y,gint w,gint h)1425 void pixbuf_desaturate_rect(GdkPixbuf *pb,
1426 gint x, gint y, gint w, gint h)
1427 {
1428 gboolean has_alpha;
1429 gint pw, ph, prs;
1430 guchar *p_pix;
1431 guchar *pp;
1432 gint i, j;
1433
1434 if (!pb) return;
1435
1436 pw = gdk_pixbuf_get_width(pb);
1437 ph = gdk_pixbuf_get_height(pb);
1438
1439 if (x < 0 || x + w > pw) return;
1440 if (y < 0 || y + h > ph) return;
1441
1442 has_alpha = gdk_pixbuf_get_has_alpha(pb);
1443 prs = gdk_pixbuf_get_rowstride(pb);
1444 p_pix = gdk_pixbuf_get_pixels(pb);
1445
1446 for (i = 0; i < h; i++)
1447 {
1448 pp = p_pix + (y + i) * prs + (x * (has_alpha ? 4 : 3));
1449 for (j = 0; j < w; j++)
1450 {
1451 guint8 grey;
1452
1453 grey = (pp[0] + pp[1] + pp[2]) / 3;
1454 *pp = grey;
1455 pp++;
1456 *pp = grey;
1457 pp++;
1458 *pp = grey;
1459 pp++;
1460 if (has_alpha) pp++;
1461 }
1462 }
1463 }
1464
1465 /*
1466 *-----------------------------------------------------------------------------
1467 * pixbuf highlight under/over exposure *-----------------------------------------------------------------------------
1468 */
pixbuf_highlight_overunderexposed(GdkPixbuf * pb,gint x,gint y,gint w,gint h)1469 void pixbuf_highlight_overunderexposed(GdkPixbuf *pb, gint x, gint y, gint w, gint h)
1470 {
1471 gboolean has_alpha;
1472 gint pw, ph, prs;
1473 guchar *p_pix;
1474 guchar *pp;
1475 gint i, j;
1476
1477 if (!pb) return;
1478
1479 pw = gdk_pixbuf_get_width(pb);
1480 ph = gdk_pixbuf_get_height(pb);
1481
1482 if (x < 0 || x + w > pw) return;
1483 if (y < 0 || y + h > ph) return;
1484
1485 has_alpha = gdk_pixbuf_get_has_alpha(pb);
1486 prs = gdk_pixbuf_get_rowstride(pb);
1487 p_pix = gdk_pixbuf_get_pixels(pb);
1488
1489 for (i = 0; i < h; i++)
1490 {
1491 pp = p_pix + (y + i) * prs + (x * (has_alpha ? 4 : 3));
1492 for (j = 0; j < w; j++)
1493 {
1494 if (pp[0] == 255 || pp[1] == 255 || pp[2] == 255 || pp[0] == 0 || pp[1] == 0 || pp[2] == 0)
1495 {
1496 *pp = 255;
1497 pp++;
1498 *pp = 0;
1499 pp++;
1500 *pp = 0;
1501 pp++;
1502 if (has_alpha) pp++;
1503 }
1504 else
1505 {
1506 pp = pp + 3;
1507 if (has_alpha) pp++;
1508 }
1509 }
1510 }
1511 }
1512
1513 /*
1514 *-----------------------------------------------------------------------------
1515 * pixbuf ignore alpha
1516 *-----------------------------------------------------------------------------
1517 */
pixbuf_ignore_alpha_rect(GdkPixbuf * pb,gint x,gint y,gint w,gint h)1518 void pixbuf_ignore_alpha_rect(GdkPixbuf *pb,
1519 gint x, gint y, gint w, gint h)
1520 {
1521 gboolean has_alpha;
1522 gint pw, ph, prs;
1523 guchar *p_pix;
1524 guchar *pp;
1525 gint i, j;
1526
1527 if (!pb) return;
1528
1529 pw = gdk_pixbuf_get_width(pb);
1530 ph = gdk_pixbuf_get_height(pb);
1531
1532 if (x < 0 || x + w > pw) return;
1533 if (y < 0 || y + h > ph) return;
1534
1535 has_alpha = gdk_pixbuf_get_has_alpha(pb);
1536 if (!has_alpha) return;
1537
1538 prs = gdk_pixbuf_get_rowstride(pb);
1539 p_pix = gdk_pixbuf_get_pixels(pb);
1540
1541 for (i = 0; i < h; i++)
1542 {
1543 pp = p_pix + (y + i) * prs + (x * 4 );
1544 for (j = 0; j < w; j++)
1545 {
1546 pp[3] = 0xff;
1547 pp+=4;
1548 }
1549 }
1550 }
1551 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */
1552